20-F

As filed with the Securities and Exchange Commission on April 12, 2018

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549

_______________________

FORM 20-F

(Mark One)

☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934

OR

☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31, 2017

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934

OR

☐ SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Date of event requiring this shell company report

For the transaction period form _______to ______________

Commission file number: 1-13314

华能国际电力股份有限公司

HUANENG POWER INTERNATIONAL, INC. (Exact name of Registrant as specified in its charter)

PEOPLE'S REPUBLIC OF CHINA (Jurisdiction of incorporation or organization)

HUANENG BUILDING6 FUXINGMENNEI STREET, XICHENG DISTRICT, BEIJING, PEOPLE'S REPUBLIC OF CHINA (Address of principal executive offices)

Mr. Huang ChaoquanHUANENG BUILDING,6 FUXINGMENNEI STREET, XICHENG DISTRICT, BEIJING, PEOPLE'S REPUBLIC OF CHINATel: +86 (10) 6322 6999 Fax: +86 (10) 6322 6888 (Name, Telephone, Email and/or Facsimile number and Address of Company Contact Person)

Securities registered or to be registered pursuant to Section 12(b) of the Act.

Title of Each Class	Name of each exchange on which registered
American Depositary Shares Each Representing 40 Overseas Listed Shares	New York Stock Exchange
Overseas Listed Shares with Par Value of RMB1.00 Per Share	New York Stock Exchange*

Securities registered or to be registered pursuant to Section 12(g) of the Act.

NONE

(Title of Class)

_______________________

Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act.

NONE

(Title of Class)

_______________________

Indicate the number of outstanding shares of each of the issuer's classes of capital or common stock as of the close of the period covered by the annual report:

Domestic A Shares with Par Value of RMB1.00 Per Share	10,500,000,000
Overseas Listed Shares with Par Value of RMB1.00 Per Share	4,700,383,440

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.

Yes ☒No ☐

If this report is an annual or transition report, indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934.

Yes ☐No ☒

Note - Checking the box above will not relieve any registrant required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 from their obligations under those Sections.

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Yes ☒No ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

Yes ☐No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or an emerging growth company. See the definitions of “large accelerated filer,”, “accelerated filer” and “emerging growth company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer ☒	Accelerated filer ☐
Non-accelerated filer ☐	Emerging growth company ☐

(Do not check if a smaller reporting company)

If an emerging growth company that prepares its financial statements in accordance with U.S.GAAP, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards† provided pursuant to Section 13(a) of the Exchange Act.

☐

† The term “new or revised financial accounting standard” refers to any update issued by the Financial Accounting Standards Board to its Accounting Standards Codification after April 5, 2012.

Indicate by check mark which basis of accounting the registrant has used to prepare the financial statements included in this filing:

U.S. GAAP ☐ International Financial Reporting Standards as issued by the International Accounting Standards Board ☒ Other ☐

If "Other" has been checked in response to the previous question, indicate by check mark which financial statement item the registrant has elected to follow.

Item 17 ☐Item 18 ☐

If this is an annual report, indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes ☐No ☒

(APPLICABLE ONLY TO ISSUERS INVOLVED IN BANKRUPTCY PROCEEDINGS DURING THE PAST FIVE YEARS)

Indicate by check mark whether the registrant has filed all documents and reports required to be filed by Sections 12, 13 or 15(d) of the Securities Exchange Act of 1934 subsequent to the distribution of securities under a plan confirmed by a court.

Yes ☐No ☐

________________________________

*Not for trading, but only in connection with the registration of American Depositary Shares

TABLE OF CONTENTS

PART I			4
ITEM 1		Identity of Directors, Senior Management and Advisers	4
ITEM 2		Offer Statistics and Expected Timetable	4
ITEM 3		Key Information	4
	A.	Selected financial data	4
	B.	Capitalization and indebtedness	5
	C.	Reasons for the offer and use of proceeds	5
	D.	Risk factors	6
ITEM 4		Information on the Company	16
	A.	History and development of the Company	16
	B.	Business overview	17
	C.	Organizational structure	36
	D.	Property, plants and equipment	37
ITEM 4A		Unresolved Staff Comments	87
ITEM 5		Operating and Financial Reviews and Prospects	87
	A.	General	87
	B.	Operating results	89
	C.	Financial position	108
	D.	Liquidity and cash resources	110
	E.	Trend information	115
	F.	Employee benefits	115
	G.	Guarantees for loans and restricted assets	116
	H.	Off-balance sheet arrangements	116
	I.	Performance of significant investments and their prospects	116
	J.	Tabular disclosure of contractual obligations and commercial commitments	117
	K.	Impairment sensitivity analysis	118
	L.	Prospects for 2018	119
ITEM 6		Directors, Senior Management and Employees	119
	A.	Directors, members of the supervisory committee and senior management	119
	B.	Compensation for Directors, Supervisors and Executive Officers	123
	C.	Board practice	125
	D.	Employees	125
	E.	Share ownership	126
ITEM 7		Major Shareholders and Related Party Transactions	126
	A.	Major shareholders	126
	B.	Related party transactions	129
	C.	Interests of experts and counsel	134
ITEM 8		Financial Information	134
	A.	Consolidated statements and other financial information	134
	B.	Significant changes	135
ITEM 9		The Offer and Listing	135
	A.	Offer and listing details and markets	135
ITEM 10		Additional Information	137
	A.	Share capital	137
	B.	Memorandum and articles of association	137
	C.	Material contracts	143

	D.	Exchange controls	143
	E.	Taxation	144
	F.	Dividends and paying agents	150
	G.	Statement by experts	150
	H.	Documents on display	150
	I.	Subsidiary information	150
ITEM 11		Quantitative and Qualitative Disclosures About Market Risk	150
ITEM 12		Description of Securities Other than Equity Securities	154
	A.	Debt Securities	154
	B.	Warrants and Rights	154
	C.	Other Securities	154
	D.	American Depositary Shares	155
PART II			155
ITEM 13		Defaults, Dividend Arrearages and Delinquencies	155
ITEM 14		Material Modifications to the Rights of Security Holders and Use of Proceeds	155
ITEM 15		Controls and Procedures	156
ITEM 16		Reserved	157
ITEM 16A		Audit Committee Financial Expert	157
ITEM 16B		Code of Ethics	157
ITEM 16C		Principal Accountant Fees and Services	158
ITEM 16D		Exemptions from the Listing Standards for Audit Committees	159
ITEM 16E		Purchases of Equity Security by the Issuer and Affiliated Purchasers	159
ITEM 16F		Change in Registrant's Certifying Accountant	159
ITEM 16G		Corporate Governance	159
ITEM 16H		Mine Safety Disclosure	162
ITEM 17		Financial Statements	162
ITEM 18		Financial Statements	162
ITEM 19		Exhibits	162

INTRODUCTION

We maintain our accounts in Renminbi Yuan ("Renminbi" or "RMB"), the lawful currency of the People's Republic of China (the "PRC" or "China"). References herein to "US$" or "U.S. dollars" are to United States Dollars, references to "HK$" are to Hong Kong Dollars, and references to "S$" are to Singapore Dollars. References to ADRs and ADSs are to American Depositary Receipts and American Depositary Shares, respectively. Translations of amounts from Renminbi to U.S. Dollars are solely for the convenience of the reader. Unless otherwise indicated, any translations from Renminbi to U.S. Dollars or from U.S. Dollars to Renminbi were translated at the middle exchange rate announced by the People's Bank of China (the "PBOC Rate") on December 29, 2017 of US$1.00 to RMB6.5342. No representation is made that the Renminbi or U.S. Dollar amounts referred to herein could have been or could be converted into U.S. Dollars or Renminbi, as the case may be, at the PBOC Rate or at all.

References to "A Shares" are to common tradable shares issued to PRC domestic shareholders.

References to the "central government" are to the national government of the PRC and its various ministries, agencies and commissions.

References to the "Company", "we", "our" and "us" include, unless the context requires otherwise, Huaneng Power International, Inc. and the operations of our power plants and our construction projects.

References to "HIPDC" are to Huaneng International Power Development Corporation and, unless the context requires otherwise, include the operations of the Company prior to the formation of the Company on June 30, 1994.

References to "Huaneng Group" are to China Huaneng Group Co., Ltd.

References to "local governments" in the PRC are to governments at all administrative levels below the central government, including provincial governments, governments of municipalities directly under the central government, municipal and city governments, county governments and township governments.

References to "our power plants" are to the power plants that are wholly owned by the Company or to the power plants in which the Company owns majority equity interests.

References to the "PRC Government" include the central government and local governments.

References to "provinces" include provinces, autonomous regions and municipalities directly under the central government.

References to "Singapore" are to the Republic of Singapore.

References to the "State Plan" refer to the plans devised and implemented by the PRC Government in relation to the economic and social development of the PRC.

References to "tons" are to metric tons.

Previously, the Overseas Listed Foreign Shares were also referred to as the "Class N Ordinary Shares" or "N Shares". Since January 21, 1998, the date on which the Overseas Listed Foreign Shares were listed on The Stock Exchange of Hong Kong Limited by way of introduction, the Overseas Listed Foreign Shares have been also referred to as "H Shares".

1

GLOSSARY

actual generation The total amount of electricity generated by a power plant over a given period of time.

auxiliary power Electricity consumed by a power plant in the course of generation.

availability factor For any period, the ratio (expressed as a percentage) of a power plant's available hours to the total number of hours in such period.

available hours For a power plant for any period, the total number of hours in such period less the total number of hours attributable to scheduled maintenance and planned overhauls as well as to forced outages, adjusted for partial capacity outage hours.

capacity factor The ratio (expressed as a percentage) of the gross amount of electricity generated by a power plant in a given period to the product of (i) the number of hours in the given period multiplied by (ii) the power plant's installed capacity.

demand For an integrated power system, the amount of power demanded by consumers of energy at any point in time.

dispatch The schedule of production for all the generating units on a power system, generally varying from moment to moment to match production with power requirements. As a verb, to dispatch a plant means to direct the plant to operate.

GW Gigawatt. One million kilowatts.

GWh Gigawatt-hour. One million kilowatt-hours. GWh is typically used as a measure for the annual energy production of large power plants.

installed capacity The manufacturers' rated power output of a generating unit or a power plant, usually denominated in MW.

kV Kilovolt. One thousand volts.

kW Kilowatt. One thousand watts.

kWh Kilowatt-hour. The standard unit of energy used in the electric power industry. One kilowatt-hour is the amount of energy that would be produced by a generator producing one thousand watts for one hour.

MVA Million volt-amperes. A unit of measure used to express the capacity of electrical transmission equipment such as transformers.

MW Megawatt. One million watts. The installed capacity of power plants is generally expressed in MW.

MWh Megawatt-hour. One thousand kilowatt-hours.

peak load The maximum demand on a power plant or power system during a specific period of time.

planned generation An annually determined target gross generation level for each of our operating power plants used as the basis for determining planned output.

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total output The actual amount of electricity sold by a power plant in a particular year, which equals total generation less auxiliary power.

transmission losses Electric energy that is lost in transmission lines and therefore is unavailable for use.

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PART I

ITEM 1 Identity of Directors, Senior Management and Advisers

Not applicable.

ITEM 2 Offer Statistics and Expected Timetable

Not applicable.

ITEM 3 Key Information

A. Selected financial data

Our consolidated data of financial position as of December 31, 2017 and 2016 and the consolidated income statement and cash flow data for each of the years in the three-year period ended December 31, 2017 are derived from the historical financial statements included herein. Our consolidated data of financial position as of December 31, 2015, 2014 and 2013 and consolidated income statement and cash flow data for each of the years in the two-year period ended December 31, 2014, are derived from the historical financial statements not included herein. The Selected Financial Data should be read in conjunction with the consolidated financial statements and "Item 5 Operating and Financial Reviews and Prospects". The financial statements have been prepared in accordance with International Financial Reporting Standards ("IFRS") as issued by the International Accounting Standards Board. The Selected Financial Data may not be indicative of future earnings, cash flows or financial position.

	Year Ended December 31,
	2013			2014			2015			2016			2017
RMB in thousands except per share data	(RMB)			(RMB)			(RMB)			(RMB)			(RMB)
Consolidated Income Statement Data
Operating revenue		133,832,875			125,406,855			128,904,873			113,814,236			152,459,444
Tax and levies on operations		(1,043,855	)		(932,485	)		(1,157,760	)		(1,177,818	)		(1,376,312	)
Operating expenses		(108,677,981	)		(99,199,728	)		(98,604,187	)		(94,258,678	)		(141,899,742	)
Profit from operations		24,111,039			25,274,642			29,142,926			18,377,740			9,183,390
Interest income		170,723			159,550			160,723			147,063			198,906
Financial expenses, net		(7,693,363	)		(7,823,606	)		(7,970,070	)		(7,067,602	)		(9,604,645	)
Other investment income		224,908			80,580			115,238			1,070,034			1,742,081
(Loss)/Gain on fair value changes of financial assets/liabilities		(5,701	)		42,538			(16,742	)		(12,986	)		856,786
Share of profits less losses of associates and joint ventures		615,083			1,315,876			1,525,975			1,298,889			425,215
Profit before income tax expense		17,422,689			19,049,580			22,958,050			13,813,138			2,801,733
Income tax expense		(4,522,671	)		(5,487,208	)		(5,698,943	)		(3,465,151	)		(1,217,526	)
Net profit		12,900,018			13,562,372			17,259,107			10,347,987			1,584,207
Attributable to:
Equity holders of the Company		10,426,024			10,757,317			13,651,933			8,520,427			1,579,836
Non-controlling interests		2,473,994			2,805,055			3,607,174			1,827,560			4,371
Basic earnings per share		0.74			0.76			0.94			0.56			0.10
Diluted earnings per share		0.74			0.76			0.94			0.56			0.10

4

	As of December 31,
	2013			2014			2015			2016			2017
RMB in thousands	(RMB)			(RMB)			(RMB)			(RMB)			(RMB)
Consolidated Financial Position Data
Current assets		34,186,911			37,865,284			33,565,403			36,966,616			48,537,710
Property, plant and equipment		181,415,181			188,379,057			219,673,070			223,061,809			284,328,093
Available-for-sale financial assets		3,111,164			4,333,377			5,077,863			3,406,032			1,604,993
Investments in associates and joint ventures		16,678,694			17,626,910			19,745,192			19,632,113			19,517,623
Land use rights and other non-current assets		9,593,252			10,636,352			14,384,078			14,524,284			20,900,635
Power generation license		3,837,169			3,720,959			3,679,175			3,849,199			3,916,246
Deferred income tax assets		652,358			884,274			1,064,391			1,263,957			2,300,091
Goodwill		12,758,031			11,725,555			11,677,182			12,135,729			15,484,120
Total assets		262,232,760			275,171,768			308,866,354			314,839,739			396,589,511
Current liabilities		(98,978,845	)		(104,846,121	)		(123,836,633	)		(130,196,251	)		(155,950,488	)
Non-current liabilities		(88,060,941	)		(85,542,941	)		(83,336,032	)		(82,456,751	)		(133,024,419	)
Total liabilities		(187,039,786	)		(190,389,062	)		(207,172,665	)		(212,653,002	)		(288,974,907	)
Total equity		(75,192,974	)		(84,782,706	)		(101,693,689	)		(102,186,737	)		(107,614,604	)

	Year Ended December 31,
	2013			2014			2015			2016			2017
RMB in thousands except per share data	(RMB)			(RMB)			(RMB)			(RMB)			(RMB)
Consolidated Cash Flow Data
Purchase of property, plant and equipment		(17,691,382	)		(19,858,216	)		(24,191,285	)		(20,144,903	)		(25,798,009	)
Net cash provided by operating activities		40,239,429			33,320,067			42,362,708			31,510,824			29,197,363
Net cash used in investing activities		(19,054,250	)		(19,470,813	)		(33,015,012	)		(17,649,646	)		(31,748,825	)
Net cash (used in)/generated from financing activities		(22,240,088	)		(10,894,180	)		(14,140,659	)		(13,601,850	)		4,013,180
Other Company Data
Dividend declared per share		0.38			0.38			0.47			0.29			0.10
Number of ordinary shares ('000)		14,055,383			14,420,383			15,200,383			15,200,383			15,200,383

B. Capitalization and indebtedness

Not applicable.

C. Reasons for the offer and use of proceeds

Not applicable.

5

D. Risk factors

Risks relating to our business and the PRC's power industry

Government regulation of on-grid power tariffs and other aspects of the power industry may adversely affect our business

Similar to electric power companies in other countries, we are subject to governmental and electric grid regulations in virtually all aspects of our operations, including the amount and timing of electricity generations, the setting of on-grid tariffs, the performance of scheduled maintenance, and the compliance with power grid control and dispatch directives as well as environment protection regulations. There can be no assurance that these regulations will not change in the future in a manner which could adversely affect our business.

The on-grid tariffs for our planned output are subject to a review and approval process involving the National Development and Reform Commission ("NDRC") and the relevant provincial government. Since April 2001, the PRC Government has been implementing an on-grid tariff-setting mechanism based on the operating terms of power plants as well as the average costs of comparable power plants. Pursuant to the NDRC circular issued in June 2004, the on-grid tariffs for our newly built power generating units commencing operation from June 2004 have been set on the basis of the average cost of comparable units adding tax and reasonable return in the regional grid. Any future reductions in our tariffs, or our inability to raise tariffs (for example, to cover any increased costs we may have to incur) as a result of the new on-grid tariff-setting mechanism, may adversely affect our revenue and profits.

In addition, the PRC Government started a program in 1999 to effect power sales through competitive bidding in some of the provinces where we operate our power plants. The on-grid tariffs for power sold through competitive bidding are generally lower than the pre-approved on-grid tariffs for planned output. In the more recent few years, power sales through competitive bidding only accounted for a small portion of our overall power sales. Nevertheless, the PRC Government is seeking to expand the program. Any increased power sales through competitive bidding may reduce our on-grid tariffs and may adversely affect our revenue and profits.

Furthermore, the PRC Government started in 2009 to promote the practice of direct power purchase by large power end-users. Pursuant to the circular jointly issued by NDRC, the State Electricity Regulatory Commission ("SERC") and China National Energy Administration in June 2009, the direct transaction price shall include the direct transaction price, the grid transmitting price and the governmental fund and additional charges, of which the direct transaction price shall be freely determined through negotiation between the power generation company and the large power end-user. The price of direct power purchase shall be subject to the supply and demand in the power market. Furthermore, the scale and mode of the transaction are also subject to the structure and level of development of local economy. In terms of power generation companies engaged in direct power purchase, direct power sales constitute a portion of the total power sales and the on-grid power tariffs for this portion are generally lower than the benchmark tariff of each region, thus affecting the on-grid power sales of the Company. For the past few years, the PRC Government continued the reform in the area of direct power purchase by large power end-users. In 2013, China National Energy Administration officially launched the direct power purchase program in seven provinces where we have power plants and the program has been steadily rolled out in other provinces. Although the direct power purchase may act as an alternative channel for our power sales, there is uncertainty as to the effect of the practice of direct power purchase over our operating results basing on the relatively lower tariffs generally for this portion.

The on-grid tariff-setting mechanism is evolving with the reforming of the PRC electric power industry. The PRC government announced a number of development and reform plans for the power market in 2016, covering areas including laws and regulations, power transmission and distribution prices and supply side dynamics, and the establishment of the power exchange market and market administration committees. In 2017, the development and reform plans have been further expanded to the nationwide scale, with multiple issuances made by the PRC government governing power development plan, electricity transmission and distribution price, opening up of the electricity generation and consumption plans, supply side dynamics, electricity power stock and ancillary market development, electricity exchange rules, market supervision and clean energy consumption, etc.

6

There is no assurance that it will not change in a manner which could adversely affect our business and results of operations or the measures we take would effectively help us to adapt to the new changes and developments. See "Item 4 Information of the Company – B. Business Overview – Pricing Policy".

If our power plants receive less dispatching than planned generation, the power plants will sell less electricity than planned

Our profitability depends, in part, upon each of our power plants generating electricity to meet the planned generation, which in turn will be subject to a local demand for electric power and dispatching to the grids by the dispatch centers of the local grid companies.

The dispatch of electric power generated by a power plant is controlled by the dispatch center of the applicable grid companies pursuant to a dispatch agreement with us and to governmental dispatch regulations. In each of the markets we operate, we compete against other power plants for power sales. No assurance can be given that the dispatch centers will dispatch the full amount of the planned generation of our power plants. A reduction by the dispatch center in the amount of electric power dispatched relative to a power plant's planned generation could have an adverse effect on the profitability of our operations.

In August 2007, the General Office of the State Council issued a notice, promoting the energy saving electricity dispatch policy, which provides dispatching priority to electricity generated from renewable resources over electricity generated from unrenewable resources. For past years, the government made continuous effort to improve energy saving, emission reduction and resources allocation. In 2014, the NDRC issued Guidance on Strengthening and Improving the Operation of Power Management Regulation. In 2015, the NDRC and China National Energy Administration ("NEA") jointly issued Guidelines on Improving Electric Power Operations and Deepening Clean Energy Generation confirming a system ensuring the full-priced purchasing of renewable energy, and requests furthering the electric power differentiation system on coal-fired units. In 2016, the NDRC and China National Energy Administration issued four official documents, namely Notice on Issuing the Measures for the Administration of the Guaranteed Buyout of Electricity Generated by Renewable Energy Resources, Directive on the Measures for the Administration of the Guaranteed Buyout of Electricity Generated by Solar, Wind Energy Resources and Provisionary Measures for Priority Dispatch of Renewable Peaking Power Generation Units and Notice on Power Supply and Demand Blance Forecast and Priority Electricity Generation and Purchase Plan in 2017 to further develop the system ensuring the full-priced purchasing of renewable energy and to encourage renewable energy producers to join the market for peaking power supplies and the establishment of the priority power generation and purchase plan. In 2017, NDRC and NEA issued Circular on Orderly Opening Up the Electricity Generation and Consumption Plans, Pilot Rules on Inter-regional Spare Renewable Energy Electricity Power Stock Trading, Circular on the Establishment of Pilot Electricity Power Stock Exchange,  Circular on Promoting Hydropower Consumption in Southwest China, and Solutions to Abandoning Hydro, Wind and Solar Energy, to promote the development of the power stock exchange and renewable power consumption.

We cannot assure that such implementation will not result in any decrease in the amount of the power dispatched by any of our power plants.

The power industry reform may affect our business

The PRC Government in 2002 announced and started to implement measures to further reform the power industry, with the ultimate goal of creating a more open and fair power market. As part of the reform, five power generation companies, including Huaneng Group, were created or restructured to take over all the power generation assets originally belonging to the State Power Corporation of China. In addition, two grid companies were created to take over the power transmission and distribution assets originally belonging to the State Power Corporation of China. An independent power supervisory commission, the SERC, was created to regulate the power industry. There might be further reforms, and it is uncertain how these reform measures and any further reforms will be implemented and impact our business. In December 2012, the PRC Government issued a notice to further reform the coal pricing mechanism, which mandated (1) the termination of all key coal purchase contracts between power generation companies and coal suppliers, and the abolition of national guidance of the railway transportation

7

capacity plan, and (2) the cancellation of the dual-track coal pricing system, effective from January 1, 2013. For a detailed discussion of the reform, see "Item 4 Information on the Company – B. Business overview – Pricing policy". There can be no assurance that such coal pricing reform will not adversely affect our results of operation. In 2013, the PRC Government continued the reform in power industry. In July 2013, China National Energy Administration issued the Notice on Direct Purchases between Power End-users and Power Generation Companies, which officially implemented the direct purchases programs by large end-users.

On March 15, 2015, the Opinions of CPC Central Committee and State Council Regarding Further Deepening Reform of the Electricity System was released, according to which the reform will be focused and directed to orderly liberalize the tariff of the competitive markets other than electricity transmission and distribution, gradually allow investment from private investors in power distribution and selling businesses, consistently open the power generation market other than those for non-profit purpose or under regulation, push for independent and regulated operation of the parties involved in electricity transactions, continue the study of regional power grid construction and the transmission and distribution system suitable for China, further strengthen government regulations for enhanced  power coordination and planning, and further improve safe and efficient operation of electricity and reliable power supply. These reforms will have a profound impact on the business models of power generation enterprises and may intensify the competition which may adversely affect our business. In November 2015, the NDRC and China Energy Administration issued six official documents regarding electricity system reform, namely Opinions on Deepening Electricity Price Reform, Opinions on Furthering Electricity Market Development, Opinions on Establishing and Institutionalizing Electricity Purchasing Organizations, Opinions on Orderly Opening Up Electricity Generation and Consumption, Opinions on Deepening Electricity Sales Reform and Guidelines on Fortifying and Institutionalizing the Management of Coal-fired Power Plants, further confirming the direction of the newest round of reforms of the electricity system.

In 2016, the PRC Government implemented various measures to further reform the power industry on many fronts, including (i) seeking public comments on the proposed amendment to the electric power law of the People's Republic of China, (ii) implementing structural reform pilot programs in nineteen provinces; (iii) establishing national electricity exchanges in Beijing and Guangzhou, (iii) setting up independent third party credit rating system for market players, (iv) promulgating rules governing the price and method of direct power purchase/competitive bidding programs as well as the market entrance and exit mechanism, and (v) furthering reform on the pricing mechanism for power transmission and distribution prices.

In 2017, The PRC Government issued various measures to further reform the power industry, including: (i) establishing the national power development plan covering the consumption share of the non-fossil fuel, heating system reform beased on "coal to gas", "coal to electricity" and renewable energy development, and new technology programs; (ii) speeding up the reform of electricity transmission and distribution price; (iii) orderly opening up the electricity generation and consumption plans; (vi) establishing the union of power exchanges and speeding up the electricity stock and ancillary service market development; (v) enhancing the development of the electricity power supply side reform; (vi) issuing the rules for monthly inter-region electricity power trade in South China; and (vii) furthering the development of the power-related credit system.

These reform actions will have a profound impact on the operations of power generation companies and may intensify competition, which may negatively impact our company.

We are effectively controlled by Huaneng Group and HIPDC, whose interests may differ from those of our other shareholders

Huaneng Group, directly or indirectly holds 47.16% of our total outstanding shares, and HIPDC directly holds 33.33% of our total outstanding shares. As Huaneng Group is HIPDC's parent company, they may exert effective control over us acting in concert. Their interests may sometimes conflict with those of our other minority shareholders. There is no assurance that Huaneng Group and HIPDC will always vote their shares, or direct the directors nominated by them to act in a way that will benefit our other minority shareholders.

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Disruption in coal supply and its transportation as well as increase in coal price may adversely affect the normal operation of our power plants

A substantial majority of our power plants are fueled by coal. The coal supply for our power plants is arranged through free negotiation between power companies, coal suppliers, and railway authorities. Thus, any material disruption in coal supply and its transportation may adversely affect our operations. To date, we have not experienced shutdowns or reduced electricity generation caused by inadequate coal supply or transportation services.

In addition, our results of operations are sensitive to the fluctuation of coal price. For the past few years, the Chinese coal market was showing a surplus in production, resulting in a significantly decreased coal price. However, the policies of reducing overcapacity of the Chinese coal producers implemented in early 2016 led to a supply shortage with surging coal prices in the Chinese coal market. There is no assurance that the increase in coal prices will not continue in the future, and if the price increase does continue, there is no assurance that we will be able to adjust our power tariff to pass on the increase in the coal price in time. Although the government has established a coal-electricity price linkage mechanism to allow power generation companies to increase their power tariffs to cope with the increase in the coal price, the implementation of the mechanism involves uncertainties. For a detailed discussion of the coal-electricity price linkage mechanism, see "Item 4 Information on the Company – B. Business overview – Pricing policy".

Power plant development, acquisition and construction are a complex and time-consuming process, the delay of which may negatively affect the implementation of our growth strategy

We develop, construct, manage and operate large power plants. Our success depends upon our ability to secure all required PRC Government approvals, power sales and dispatch agreements, construction contracts, fuel supply and transportation and electricity transmission arrangements. Delay or failure to secure any of these could increase cost or delay or prevent commercial operation of the affected power plant. Although each of our power plants in operation and the power plants under construction received all required PRC Government approvals in a timely fashion, no assurances can be given that all the future projects will receive approvals in a timely fashion or at all. In addition, due to national policies and related regulations promoting environment-friendly energy, the approval requirements and procedures for power plant are becoming increasingly stringent, which may negatively affect the approval process of our new projects.

We have generally acted as, and intend to continue to act as, the general contractor for the construction of our power plants. As with any major infrastructure construction effort, the construction of a power plant involves many risks, including shortages of equipment, material and labor, labor disturbances, accidents, inclement weather, unforeseen engineering, environmental, geological, delays and other problems and unanticipated cost increases, any of which could give rise to delays or cost overruns. Construction delays may result in loss of revenues. Failure to complete construction according to specifications may result in liabilities, decrease power plant efficiency, increase operating costs and reduce earnings.  Although the construction of each of our power plants was completed on or ahead of schedule and within its budget, no assurance can be given that construction of future projects will be completed on schedule or within budget.

In addition, from time to time, we may acquire existing power plants from HIPDC, Huaneng Group or other parties. The timing and the likelihood of the consummation of any such acquisitions will depend, among other things, on our ability to obtain financing and relevant PRC Government approvals and to negotiate relevant agreements for terms acceptable to us.

Substantial capital is required for investing in or acquiring new power plants and failure to obtain capital on reasonable commercial terms will increase our finance cost and cause delay in our expansion plans

An important component of our growth strategy is to develop new power plants and acquire operating power plants and related development rights from HIPDC, Huaneng Group or other companies on commercially reasonable terms. Our ability to arrange financing and the cost of such financing depend on numerous factors, including general economic and capital market conditions, credit availability from banks or other lenders, investor confidence in us and the continued success of our power plants. Although we have not been materially affected by inflation in the past, there is no assurance that we would not be affected in the future. We anticipate the PBOC will

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further its sound and neutral monetary policy in 2018. Affected by the structural pressure such as PBOC raising the benchmark interest rate, the currency market and the bond market will witness a further increase in the funding cost, and we will face more pressure on our borrowing interest payment. The interest bearing debts of the Company are mostly denominated in Renminbi, changes in benchmark lending interest rate published by the PBOC will have a direct impact on the Company's cost of debt. In the Singapore capital market, the SOR interest rate is expected to rise amid interest rate hikes in the U.S., resulting in an increase of the financing costs of Tuas Power. As a result, we may not be able to carry out our expansion plans due to the failure to obtain financing or increased financing costs. Furthermore, although we have historically been able to obtain financing on terms acceptable to us, there can be no assurance that financing for future power plant developments and acquisitions will be available on terms acceptable to us or, in the event of an equity offering, that such offering will not result in substantial dilution to existing shareholders.

Operation of power plants involves many risks and we may not have enough insurance to cover the economic losses if any of our power plants' ordinary operation is interrupted

The operation of power plants involves many risks and hazards, including breakdown, failure or substandard performance of equipment, improper installation or operation of equipment, labor disturbances, natural disasters, environmental hazards and industrial accidents. The occurrence of material operational problems, including but not limited to the above events, may adversely affect the profitability of a power plant.

Our power plants in the PRC currently maintain insurance coverage that is typical in the electric power industry in the PRC and in amounts that we believe to be adequate. Such insurance, however, may not provide adequate coverage in certain circumstances. In particular, in accordance with industry practice in the PRC, our power plants in the PRC do not generally maintain business interruption insurance, or any third party liability insurance other than that included in construction all-risks insurance or erection all-risks insurance to cover claims in respect of bodily injury or property or environment damage arising from accidents on our property or relating to our operation. Although each of our power plants has a good record of safe operation, there is no assurance that the afore-mentioned accidents will not occur in the future.

If the PRC Government adopts new and stricter environmental laws and additional capital expenditure is required for complying with such laws, the operation of our power plants may be adversely affected and we may be required to make more investment in compliance with these environmental laws

Most of our power plants, being coal-fired power plants, discharge pollutants into the environment. We are subject to central and local government environmental protection laws and regulations, which currently impose base-level discharge fees for various polluting substances and graduated schedules of fees for the discharge of waste substances. The amounts of discharge fees are determined by the local environmental protection authority based on the periodic inspection of the type and volume of pollution discharges. In addition, such environmental protection laws and regulations also set up the goal for the overall control on the discharge volume of key polluting substances. These laws and regulations impose fines for violations of laws, regulations or decrees and provide for the possible closure by the central government or local government of any power plant which fails to comply with orders requiring it to cease or cure certain activities causing environmental damage. Also, the PRC Government requires thermal power plants to equip all units with desulphurization and denitrification facilities, and sets higher anti-dust standards. In September 2014, the NDRC, the Ministry of Environmental Protection and the China National Energy Administration jointly issued the 2014-2020 Action Plans for Energy Saving, Emission Reduction and Renovation of Coal-fired Generation Units, imposing stricter requirements for efficient and clean development of coal-fired generating plants. Such stringent standards, together with the increase in the discharge fees, will result in the increases in the environmental protection expenditure and operating costs of power plants and may have an adverse impact on our operating results.

We attach great importance to the environmental related matters of our existing power plants and our power plants under construction. We have implemented a system that is designed to control pollution caused by our power plants, including the establishment of an environmental protection office at each power plant, adoption of relevant control and evaluation procedures and the installation of certain pollution control equipment. We also upgraded the super low emission facilities on our coal-fired units. We believe our environmental protection systems and facilities for the power plants are adequate for us to comply with applicable central government and local

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government environmental protection laws and regulations. However, the PRC Government may impose new, stricter laws and regulations on environmental protection, which may adversely affect our operations.

The PRC is a party to the Framework Convention on Climate Change ("Climate Change Convention"), which is intended to limit or capture emissions of "greenhouse" gases, such as carbon dioxide. Ceilings on such emissions could limit the production of electricity from fossil fuels, particularly coal, or increase the costs of such production. At present, ceilings on the emissions of "greenhouse" gases have not been assigned to developing countries under the Climate Change Convention. Therefore, the Climate Change Convention would not have a major effect on us in the short term because the PRC as a developing country is not obligated to reduce its emissions of "greenhouse" gases at present, and the PRC Government has not adopted relevant control standards and policies. If the PRC were to agree to such ceilings, or otherwise reduce its reliance on coal-fired power plants, our business prospects could be adversely affected.  In addition, pilot carbon emission trading programs have been conducted in certain regions and are expected to be gradually implemented throughout China.  This may also adversely affect our business and financial prospects in the future.

Our business benefits from certain PRC Government tax incentives. Expiration of, or changes to, the incentives could adversely affect our operating results

Prior to January 1, 2008, according to the relevant income tax law, domestic enterprises were, in general, subject to statutory income tax of 33% (30% enterprise income tax and 3% local income tax). If these enterprises are located in certain specified locations or cities, or are specifically approved by State Administration of Taxation, a lower tax rate would be applied. Effective from January 1, 1999, in accordance with the practice notes on the PRC income tax laws applicable to foreign invested enterprises investing in energy and transportation infrastructure businesses, a reduced enterprise income tax rate of 15% (after the approval of State Administration of Taxation) was applicable across the country. We applied this rule to all of our wholly owned operating power plants after obtaining the approval of State Administration of Taxation. In addition, certain power plants were exempted from enterprise income tax for two years starting from the first profit-making year, after offsetting all tax losses carried forward from the previous years (at most of five years), followed by a 50% reduction of the applicable tax rate for the next three years. The statutory income tax was assessed individually based on each of their results of operations.

On March 16, 2007, the Enterprise Income Tax Law of PRC, or the New Enterprise Income Tax Law, was enacted, and became effective on January 1, 2008 and was amended on February 24, 2017. The New Enterprise Income Tax Law imposes a uniform income tax rate of 25% for domestic enterprises and foreign invested enterprises. Therefore, our power plants subject to a 33% income tax rate prior to January 1, 2008 are subject to a lower tax rate of 25% starting on January 1, 2008. With regard to our power plants entitled to a reduced enterprise income tax rate of 15% prior to January 1, 2008, their effective tax rate gradually increased to 25% within a five-year transition period commencing on January 1, 2008. Accordingly, the effective tax rate of our wholly owned power plants has increased over time. In addition, although our power plants entitled to tax exemption and reduction under the income tax laws and regulations that are effective prior to the New Enterprise Income Tax Law will continue to enjoy such preferential treatments until the expiration of the same, newly established power plants will not be able to benefit from such tax incentives, unless they can satisfy specific qualifications, if any, provided by then effective laws and regulations on preferential tax treatment.

The increase of applicable income tax rate and elimination of the preferential tax treatment with regard to certain of our power plants may adversely affect our financial condition and results of operations. Moreover, our historical operating results may not be indicative of our operating results for future periods as a result of the expiration of the tax benefits currently available to us.

In addition, according to the New Enterprise Income Tax Law and its implementation rules, any dividends derived from the distributable profits accumulated from January 1, 2008 and paid to the shareholders who are non-resident enterprises in the PRC will be subject to the PRC withholding tax at the rate of 10%. The withholding tax will be exempted if such dividends are derived from the distributable profits accumulated before January 1, 2008. Under a notice issued by the State Administration of Taxation of the PRC on November 6, 2008, we are required to withhold PRC income tax at the rate of 10% on annual dividends paid for 2008 and later years payable to our H Share investors who are non-resident enterprises.

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Fluctuations in exchange rates could have an adverse effect on our results of operations and your investment

As a power producer operating mainly in China, we collect most of our revenues in Renminbi and have to convert Renminbi into foreign currencies to (i) repay some of our borrowings which are denominated in foreign currencies, (ii) purchase foreign made equipment and parts for repairs and maintenance, (iii) purchase fuel from overseas suppliers, and (iv) pay out dividend to our overseas shareholders.

The value of the Renminbi against the U.S. dollar and other currencies may fluctuate and is affected by, among other things, changes in China's political and economic conditions. The conversion of Renminbi into foreign currencies, including U.S. dollars, is based on rates set by the PBOC. On July 21, 2005, the PRC government introduced a floating exchange rate system to allow the value of Renminbi to fluctuate within a regulated band based on market supply and demand and by reference to a basket of foreign currencies. Renminbi appreciated by more than 20% against the U.S. dollar between July 2005 and July 2008. Between July 2008 and June 2010, this appreciation halted and the exchange rate between the Renminbi and the U.S. dollar remained within a narrow band. On June 19, 2010, the PBOC decided to further promote the reform of the Renminbi exchange rate formation mechanism, and improve the flexibility of Renminbi exchange rate. The Company and its subsidiaries (both domestic and overseas) have debts denominated in foreign currencies, fluctuations in the exchange rates of Renminbi and Singapore dollar into foreign currencies create exchange risk for the Company. With the internationalization process and RMB joining the SDR, RMB exchange rate may continue to fluctuate in the future. In August 2015, the PBOC further improved its midpoint rate determination mechanism, which led to a 2% depreciation of Renminbi against the U.S. dollar. However, it is difficult to predict how market forces or PRC or U.S. government policy may impact the exchange rate between the Renminbi and the U.S. dollar in the future. There remains significant international pressure on the PRC Government to further liberalize its currency policy, which could result in further fluctuations in the value of the Renminbi against the U.S. dollar. However, there is no assurance that there will not be a devaluation of Renminbi in the future. If there is such devaluation, our debt servicing cost will increase and the return to our overseas investors may decrease.

Our revenues from SinoSing Power Pte. Ltd. ("SinoSing Power") and its subsidiaries are collected in Singapore dollars. However, commencing from 2008, the operating results of SinoSing Power and its subsidiaries were consolidated into our financial statements, which use Renminbi as the presentation currency. As a result, we are exposed to foreign exchange fluctuations between Renminbi and the Singapore dollar. Appreciation of Renminbi against the Singapore dollar may cause an adverse impact on our operation results and foreign translation difference.

The audit report included in this annual report is prepared by an auditor who is not inspected by the Public Company Accounting Oversight Board and, as such, you are deprived of the benefits of such inspection

Auditors of companies that are registered with the U.S. Securities and Exchange Commission and traded publicly in the United States, including our independent registered public accounting firm, must be registered with the U.S. Public Company Accounting Oversight Board (United States) (the "PCAOB") and are required by the laws of the United States to undergo regular inspections by the PCAOB to assess their compliance with the laws of the United States and professional standards. Because we have substantial operations within the People's Republic of China and the PCAOB is currently unable to conduct inspections of the work of our auditors as it relates to those operations without the approval of the Chinese authorities, our auditor's work related to our operations in China is not currently inspected by the PCAOB. In May 2013, PCAOB announced that it had entered into a Memorandum of Understanding on Enforcement Cooperation with the China Securities Regulatory Commission ("CSRC") and the PRC Ministry of Finance, which establishes a cooperative framework between the parties for the production and exchange of audit documents relevant to investigations undertaken by PCAOB, the CSRC or the PRC Ministry of Finance in the United States and the PRC, respectively. PCAOB continues to be in discussions with the CSRC and the PRC Ministry of Finance to permit joint inspections in the PRC of audit firms that are registered with PCAOB and audit Chinese companies that trade on U.S. exchanges.

This lack of PCAOB inspections of audit work performed in China prevents the PCAOB from regularly evaluating audit work of any auditors that was performed in China including that performed by our auditors. As a result, investors may be deprived of the full benefits of PCAOB inspections. Investors may lose confidence in our reported financial information and procedures and the quality of our financial statements.

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Our independent registered public accounting firm may be temporarily suspended from practicing before the SEC. If a delay in completion of our audit process occurs as a result, we could be unable to timely file certain reports with the SEC, which may lead to the delisting of our stock

On January 22, 2014, Judge Cameron Elliot, an SEC administrative law judge, issued an initial decision suspending the Chinese member firms of the "Big Four" accounting firms, including our independent registered public accounting firm, from, among other things, practicing before the SEC for six months.  In February 2014, the initial decision was appealed. While under appeal and in February 2015, the Chinese member firms of "Big Four" accounting firms reached a settlement with the SEC. As part of the settlement, each of the Chinese member firms of "Big Four" accounting firms agreed to settlement terms that include a censure; undertakings to make a payment to the SEC; procedures and undertakings as to future requests for documents by the US SEC; and possible additional proceedings and remedies should those undertakings not be adhered to.

If the settlement terms are not adhered to, Chinese member firms of "Big Four" accounting firms may be suspended from practicing before the SEC which could in turn delay the timely filing of our financial statements with the SEC.  In addition, it could be difficult for us to timely identify and engage another qualified independent auditor. A delinquency in our filings with the SEC may result in NYSE initiating delisting procedures, which could adversely harm our reputation and have other material adverse effects on our overall growth and prospect.

Forward-looking information may prove inaccurate

This document contains certain forward-looking statements and information relating to us that are based on the beliefs of our management as well as assumptions made by and information currently available to our management. When used in this document, the words "anticipate," "believe," "estimate," "expect," "going forward" and similar expressions, as they relate to us or our management, are intended to identify forward-looking statement. Such statements reflect the current views of our management with respect to future events and are subject to certain risks, uncertainties and assumptions, including the risk factors described in this document. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those described herein as anticipated, believed, estimated or expected. We do not intend to update these forward-looking statements.

There can be no assurance that we will not be passive foreign investment company, or PFIC, for United States federal income tax purposes for any taxable year, which could subject United States investors in the ADSs or our H Shares to significant adverse United States income tax consequences.

We will be a "passive foreign investment company," or "PFIC," if, in the case of any particular taxable year, either (a) 75% or more of our gross income for such year consists of certain types of "passive" income or (b) 50% or more of the average quarterly value of our assets (as determined on the basis of fair market value) during such year produce or are held for the production of passive income (the "asset test"). For United States federal income tax purposes, and based upon our income and assets, we do not believe that we were classified as a PFIC for the taxable year ended December 31, 2017, and do not anticipate becoming one in the foreseeable future.

While we do not expect to become a PFIC, because the value of our assets for purposes of the asset test may be determined by reference to the market price of the ADSs, fluctuations in the market price of the ADSs may cause us to become a PFIC for the current or subsequent taxable years. The determination of whether we will be or become a PFIC will also depend, in part, on the composition of our income and assets. Under circumstances where we determine not to deploy significant amounts of cash for active purposes, our risk of being a PFIC may substantially increase. Because there are uncertainties in the application of the relevant rules and PFIC status is a factual determination made annually after the close of each taxable year, there can be no assurance that we will not be a PFIC for the current taxable year or any future taxable year.

If we are a PFIC in any taxable year, a U.S. Holder (as defined in "Item 10. Additional Information—E. Taxation—United States federal income tax considerations") may incur significantly increased United States income tax on gain recognized on the sale or other disposition of the ADSs or H Shares and on the receipt of distributions on the ADSs or H Shares to the extent such gain or distribution is treated as an "excess distribution" under the United States federal income tax rules and such holders may be subject to burdensome reporting requirements. Further, if

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we are a PFIC for any year during which a U.S. Holder holds the ADSs or our H Shares, we generally will continue to be treated as a PFIC for all succeeding years during which such U.S. Holder holds the ADSs or our H Shares. For more information see "Item 10. Additional Information—E. Taxation—United States federal income tax considerations—Passive Foreign Investment Company Considerations."

Risks relating to doing business in the PRC

China's economic, political and social conditions as well as government policies could significantly affect our business

As of December 31, 2017, the majority of our business, assets and operations are located in China. The economy of China differs from the economies of most developed countries in many respects, including government involvement, control of foreign exchange, and allocation of resources.

The economy of China has been transitioning from a planned economy to a more market-oriented economy. After multiple years of strenuous and sustained economic restructuring reforms, China has become a leading player in the global economy and a major contributing force to the economic revival and growth worldwide. The PRC Government has implemented economic reform measures emphasizing utilization of market forces in the development of the economy of China and a higher level of autonomy for the private sector. Some of these measures will benefit the overall economy of China, but may have a negative effect on us for a short term. For example, our operating results and financial condition may be adversely affected by changes in power tariff for our power plants, cost of fuels, increasingly stringent environment protection policies, and changes in State policies affecting the power industry.

Interpretation of PRC laws and regulations involves significant uncertainties

The PRC legal system is based on written statutes and their interpretation by the Supreme People's Court. Prior court decisions may be cited for reference but are not considered as binding precedents.

We are subject to certain PRC regulations governing PRC companies that are listed overseas. These regulations contain certain provisions that are required to be included in the articles of association of these PRC companies and are intended to regulate the internal affairs of these companies. As the PRC regulations are constantly evolving with the goal of better protecting shareholder's interests, we may face greater uncertainties in the interpretation of PRC laws and regulations. Furthermore, the PRC regulations for protection of shareholder's rights are different from those applicable in the United States and/or exchanges where we are listed.  Therefore we made it our policy to adopt the strictest standards of any listing rules potentially applicable to us. Some of these standards are incorporated in our articles of association and bylaws with the view to providing most protection for the interests of our shareholders.

Risks relating to our operations in Singapore

Our operations in Singapore are subject to a number of risks, including, among others, risks relating to electricity pricing, dispatching, fuel supply, project development, capital expenditure, environmental regulations, government policies, and Singapore's economic, political and social conditions. Any of these risks could materially and adversely affect our business, prospects, financial condition and results of operations.

Fluctuation in demand and intensified competition may adversely affect Tuas Power's business and results of operations.

Our operations in Singapore depend on market demand and are subject to competition. Overall power system demand grew by 1% in 2017 over 2016. The future growth is highly dependent on a sustained recovery in the Singapore and global economies. The liberalization of Singapore's power market and the further deregulation of its power industry have resulted in more intense competition among the power generation companies in Singapore. Tuas Power Group, or Tuas Power, one of our wholly owned business units, is one of the three largest power generation companies in Singapore. If Tuas Power is unable to compete successfully against other power generation

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companies in Singapore, its business, prospects, financial condition and results of operations may be adversely affected.

An electricity futures market was also established in 2015 through an incentive scheme by the authority to market makers (MM) in the futures market. This has attracted independent retailers which are expected to exert some price competition in the retail market. A Demand Response (DR) scheme is currently being established which could potentially introduce further price competition in the wholesale generation market in Singapore. Furthermore, the Singapore government recently announced plans to raise the adoption of solar energy to 350 MWp by 2020 and 1,000MWp beyond 2020, compared to around 140 MWp in third quarter 2017.

TP Utilities Pte Ltd ("TPU"), an entity in Tuas Power Group, sells utilities, such as steam, industrial water and demineralized water to industrial customers for their direct consumption. The time of potential customers of TPU to site their premises, if at all, is subject to microeconomic situations. The demand of the utilities by these customers may vary as well. Despite Tuas Power's efforts to develop its facilities in stages and/or in modules to provide sufficient capacity matching the demand, and require customers to pay minimum capacity payment charges to mitigate the demand risk, its business and results of operations may be adversely affected by fluctuation in demand.

Regulatory changes of the vesting regime in Singapore could expose Tuas Power to electricity price volatility and adversely affect its business and results of operations

Tuas Power derives its revenue mainly from sale of electricity to the National Electricity Market of Singapore (the "NEMS") through a bidding process and vesting contracts under which a significant portion of power sales is predetermined by the Energy Market Authority ("EMA"). The vesting contract regime in Singapore is targeted at mitigation of market power in the wholesale electricity spot market. The regime achieves this objective by assigning a quantity of vesting contracts to generation companies, thereby limiting their incentives to exercise whatever level of market power they may possess. Vesting contracts are a form of bilateral contract imposed/vested on the major power generation companies in Singapore. Vesting contract price is set by the EMA, which is Singapore's power market regulator. Vesting contract price is set at the long run marginal cost of the most efficient base-loaded technology plant employed in Singapore and is reviewed every two years. On a quarterly basis, the EMA allows for vesting contract quantity to be adjusted to account for changes in demand (due to seasonality) and the vesting contract price to be adjusted to account for inflation and changes in fuel prices. Such a mechanism helps protect the profit margins of the power generation companies in the Singapore market, such as Tuas Power, to a large degree. The quantity of vesting contract allocated to the power generation company depends on the proportion of such power generation company's capacity to the total licensed or planned generation capacity at the commencement of the vesting contracts regime. A portion of the volume under the Vesting Contract Scheme has also been allocated to the LNG Vesting Scheme - an incentive scheme where players who have committed to an initial tranche of LNG for Singapore are allocated electricity sale contracts.  The volume allocated to the generation companies under the LNG vesting scheme is fixed for a period of 10 years until 2023. By the end of 2015, the vesting contract has been rolled back to 25% of system demand (inclusive of the LNG Vesting Scheme). Following an appeal by some of the players in the market, the vesting contract level has been maintained at 25% for 2016. Following EMA's review of the Vesting Contract Regime in 2016, it is determined that the vesting contract level will be maintained at 25% until the end of the first half of 2018 and it will be reduced to LNG vesting level by the second half of  2019. The vesting contract regime will be phased out by 2023 when the LNG vesting contract expires, which could lead to volatility in electricity prices and adversely affect our business, financial condition and results of operation.

The fuel cost of Tuas Power is exposed to volatility of international fuel price and foreign currency risk

The fuel for Tuas Power consists of natural gas, coal, biomass, fuel oil and diesel oil. Since the procurement price of natural gas is closely linked to oil price and the procurement price of coal and biomass is linked to a coal index, the fuel cost of Tuas Power is exposed to the volatility of international oil and coal prices. The prices of oil continued the upward trend in 2017 and the price of coal remained strong in 2017. In addition, the commitments for the purchase of fuel are denominated in U.S. dollars, which further exposes Tuas Power to foreign currency risk. Any increase in fuel price and/or appreciation of the U.S. dollar against the Singapore dollar will translate into an increase in fuel cost for Tuas Power. Part of this increase can be passed through electricity sale

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contracts and utilities sale contracts, while fuel and foreign exchange hedging strategies done appropriately will mitigate the impact of such increase. No assurance can be given that such increase will not adversely affect results of its operation. Tuas Power is highly dependent upon the import of gas via pipelines from Indonesia.  The movement in the price of oil over the course of 2017 has resulted in variation in the price for its various sources of gas supply within the same month. Any disruption of such supply would impact the normal operation of Tuas Power significantly. This risk has been mitigated through Tuas Power's contract to buy LNG for its incremental needs, although there is no assurance that, in the event of fuel supply shortfall, Tuas Power's operations will not be adversely affected.

ITEM 4 Information on the Company

A. History and development of the Company

Our legal and commercial name is Huaneng Power International, Inc. Our head office is at Huaneng Building, 6 Fuxingmennei Street, Xicheng District, Beijing, People's Republic of China and our telephone number is (8610) 63226999. We were established in June 1994 as a company limited by shares organized under the laws of the People's Republic of China.

We completed our initial global public offering of 1,250,000,000 overseas listed foreign shares in October 1994, which were listed on the New York Stock Exchange (Stock Code: HNP) in the United States by issuing 31,250,000 ADSs. In January 1998, the foreign shares of the Company were listed on The Stock Exchange of Hong Kong Limited by way of introduction (Stock Code: 902). Subsequently, in March 1998, the Company successfully completed a global placing of 250,000,000 foreign shares along with a private placing of 400,000,000 domestic shares. In November 2001, the Company successfully completed the issuance of 350,000,000 A Shares (Stock Code: 600011) in the PRC, of which 250,000,000 domestic public shares were listed on the Shanghai Stock Exchange. In December 2010, the Company completed the non-public issuance of 1,500,000,000 A Shares and 500,000,000 H Shares. In November 2014, the Company completed the non-public issuance of 365,000,000 H Shares. In November 2015, the Company completed the non-public issuance of 780,000,000 H Shares. Currently, the total share capital of the Company amounts to approximately 15.2 billion shares.

As resolved at the second meeting of the 8th session of the board of the Company on October 13, 2014 and adopted at the third extraordinary general meeting of the Company, we entered into the Huaneng Group Interests Transfer Agreement with Huaneng Group, and the HIPDC Interests Transfer Agreement and the Chaohu Power Interests Transfer Agreement with HIPDC. Pursuant to these transfer agreements, we acquired from Huaneng Group 91.8% interests of Hainan Power, 75% interests of Wuhan Power, 53.45% interests of Suzhou Thermal Power, 97% interests of Dalongtan Hydropower and 100% interests of Hualiangting Hydropower at a total price of RMB7.338 billion, and acquire from HIPDC 60% interests of Chaohu Power, 100% interests of Ruijin Power, 100% interests of Anyuan Power, 100% interests of Jingmen Thermal Power and 100% interest of Yingcheng Thermal Power Interests at a total price of RMB1.938 billion. The total consideration is RMB9.647 billion after adjustment of the profits generated from the date of valuation to the acquisition date in accordance with the equity transfer agreements. The transaction was completed in January 2015.

On October 14, 2016, the Company signed the Agreement for the Transfer of Equity Interests in Certain Companies with Huaneng Group (the "Transfer Agreement"). Pursuant to the Transfer Agreement, the Company shall accept the transfer of (i) 80% equity interest of Huaneng Shandong Power Limited; (ii) 100% equity interest of Huaneng Jilin Power Limited; (iii) 100% equity interest of Huaneng Heilongjiang Power Limited; and (iv) 90% equity interest of Huaneng Henan Zhongyuan Gas Power Generation Co., Ltd. from Huaneng Group for the consideration of RMB15,501 million after certain adjustment of the profits generated from the date of valuation to the acquisition date in accordance with the equity transfer agreements. This transaction was considered and approved at the 21st meeting of the Eighth Session of the Board held on October 14, 2016, and was considered and approved at the 2016 Second Extraordinary General Meeting held on November 30, 2016. The acquisition was completed on January 1, 2017, and the total consideration has been settled in cash by  December 31, 2017 after netting off with the receivables due from Huaneng Group.

See "Item 5 Operating and Financial Reviews and Prospects – Liquidity and Cash Resources" for a description of our principal capital expenditures since the beginning of the last three financial years.

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B. Business overview

We are one of the China's largest independent power producers and we have been striving for innovations in technologies, structure, and management since its incorporation. We were the first to introduce a 600 MW supercritical generating unit into China and we also started operating the first domestically built single 1,000 MW ultra-supercritical coal-fired generating unit, and the first digitalized 1,000 MW ultra-supercritical coal-fired generating unit in China. We completed the construction of the first 1,000 MW generating unit in the world using sea water desulphurization facilities and the 660 MW high-efficiency ultra-supercritical coal-fired generating unit with the highest parameter in China. We completed the construction of the first double reheat ultra-supercritical coal-fired generating unit, and developed the technology for synergistic treatment of fuel gas of coal-fired power plants, which was successfully applied in various environmental protection renovation and newly-constructed projects. We completed the offshore wind power project with the largest generating capacity in Asia and was the first to realize mass production of the wind turbine of 5 MW in China. We also invested and operated the most advanced gas turbine with the largest generation capacity and heat supplying capacity in China. We completed the first major energy project in the China-Pakistan Economic Corridor and created the best record of safety, quality and progress in overseas electricity construction by China.  The technical and economic indicators as well as the overall manpower efficiency of the Company have been remaining at the forefront in China’s power industry.

As of March 31, 2018, we had controlling generating capacity of 104,301 MW, and total generating capacity of 91,783 MW on equity-ownership basis.

Operations in China

We are engaged in developing, constructing, operating and managing power plants throughout China. Our domestic power plants are located in 26provinces, autonomous regions and provincial-level municipalities.

In 2017, the Company proactively adapted to the new changes in the power system reform, grasping opportunities while at the same time tackling challenges. The Company maintained its leading position in terms of the level of safe and clean production in the industry for the year. With continuous improvement in the power structure, the Company saw an increase in both volume and price in power generation, while enhancing its capabilities on sustaining the supply of and controlling the price of fuels. In addition, outstanding performance was achieved in capital operation, thus the annual operating objectives were accomplished in a more satisfactory manner while the Company continued to fulfill the duties of providing sufficient, and reliable power to the society.

In 2017, new generating units with a total installed capacity of 3,325 MWwere put into operation. In 2017, our total domestic power generation from all operating power plants on a consolidated basis amounted to 394.481 billion kWh, representing an increase of 25.8% from 2016. The annual average utilization hours of our domestic generating units reached 3,951 hours. Our fuel cost per unit of power sold by domestic power plants increased by 32.41% from the previous year to RMB 225.92 per MWh.

We believe our significant capability in the development and construction of power projects, as exemplified in the completion of our projects under construction ahead of schedule, and our experience gained in the successful acquisitions of power assets in recent years will enable us to take full advantage of the opportunities presented in China's power market.

With respect to the acquisition or development of any project, we will consider, among other factors, changes in power market conditions, and adhere to prudent commercial principles in the evaluation of the feasibility of the project. In addition to business development strategies, we will continue to enhance our profitability by further strengthening our cost control, especially in respect of fuel costs and construction costs, so as to hedge against fluctuations in fuel price and increase competitiveness in the power market.

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Operations in Singapore

Tuas Power, one of our wholly owned business units, operates in Singapore and is engaged in the business of generation, wholesale and retail of power and other relating utilities. Tuas Power is comprised of Tuas Power Ltd ("TPL"), the investment holding company, and eight subsidiaries. Among these subsidiaries, Tuas Power Generation Pte. Ltd. ("TPG") is the electricity generation company that owns 100% of Tuas Power Supply Pte Ltd ("TPS"), which is the retail arm of TPG. Separately, TPU, a wholly owned subsidiary of TPL is engaged in the business of production and supply of utilities to industrial customers at Tembusu, Jurong Island in Singapore, as well as the generation of electricity dispatched to the electricity wholesale market. We have consolidated Tuas Power's results of operations since March 2008. The total assets and revenue of Singapore operations represented approximately 7.05% and 6.61%, respectively, of our consolidated total assets and revenue as of and for the year ended December 31, 2017. In 2017, the power generated by Tuas Power in Singapore accounted for 21.9% of the total power generated in Singapore, slightly higher than 2016.

Development of power plants

The process of identifying potential sites for power plants, obtaining government approvals, completing construction and commencing commercial operations is usually lengthy. However, because of our significant experience in developing and constructing power plants, we have been able to identify promising power plant projects in China and to obtain all required PRC Government approvals in a timely manner.

Opportunity identification and feasibility study

We initially identify an area in which additional electric power is needed by determining its existing installed capacity and projected demand for electric power. The initial assessment of a proposed power plant involves a preliminary feasibility study. The feasibility study examines the proposed power plant's land use requirements, access to a power grid, fuel supply arrangements, availability of water, local requirements for permits and licenses and the ability of potential customers to afford the proposed power tariff. To determine projected demand, factors such as economic growth, population growth and industrial expansion are used. To gauge the expected supply of electricity, the capacities of existing plants and plants under construction or development are studied.

Approval process

Prior to July 2004, any project proposal and supporting documents for new power plants had to first be submitted to the NDRC for approval and then be submitted to the State Council. In July 2004, the State Council of the PRC reformed the fixed asset investment regulatory system in China. Under the new system, new projects in the electric power industry that do not use government funds will no longer be subject to the examination and approval procedure. Instead, they will only be subject to a confirmation and registration process. Coal-fired projects will be subject to confirmation by the NDRC. Wind power projects with installed capacity of 50 MW or above shall be subject to confirmation and registration with the relevant department of the central government, while wind power projects with an installed capacity lower than 50 MW shall be subject to confirmation and registration with relevant local government departments. Wind power projects confirmed by local government departments at provincial level shall also be filed with the NDRC and China National Energy Administration.

In November 2014, pursuant to the Catalogue of Investment Projects Approved by the Government (2014 Version) issued by the State Council, administrative approval power for certain activities in the energy sector has been delegated to a lower level. The administrative approval power for thermal power stations has been delegated to the provincial level (with coal-fired thermal power station projects being subject to national-level administrative approval based on state-promulgated constructions plans limited by total volume), the administrative approval power for heat power stations has been delegated to the local level (with condensing steam heat power station projects being subject to provincial-level administrative approval based on state-promulgated constructions plans limited by total volume), and the administrative approval power for wind power plants delegated to the local level subject to state-promulgated constructions plans limited by total volume as well as the scope as set out in the annual developmental guides. The Interim Measures for Supervision and Administration of Photovoltaic Power Station Projects issued by China National Energy Administration in 2013 requires that photovoltaic power station projects be regulated by on a filing-based system by the provincial-level energy supervisory departments in accordance with regulations related to investment projects issued by the State Council. The same administrative approval standard was again re-affirmed in December 2016 pursuant to the Catalogue of Investment Projects Approved by the Government (2016 Version) issued by the State Council.

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Joint venture power projects are subject to additional governmental approvals. Approval by Ministry of Commerce is also required when foreign investment is involved.

From 2014, China National Energy Administration has placed the stringent control on coal-fired projects within the Beijing-Tianjin-Hebei region, the Yangtze River Delta Region and the Pearl River Delta Region. All new coal-fired generating projects, other than those involving co-generation, were prohibited from being approved. Multi coal-fired generating units may be reconstructed into large capacity units based on the principles of an equivalent replacement for coal but the reduction in replacement pollutant emission.

From 2016, to counter the issue of overcapacity in the coal-fired power sector, China National Energy Administration strengthened the approval of coal-fired projects nationwide, a number of new coal-fired generating projects, other than those involving co-generation, were canceled, postponed or terminated. Considering the increasingly limited availability of prime locations and decreasing subsidies, China National Energy Administration also suspended approval of new wind power plants and photovoltaic power station projects in provinces with wind curtailment rate over 20% and solar curtailment rate over 5%.  It is expected that the overcapacity countering policy will be continued in the future.

Permits and contracts

In developing a new power plant, we, like other players in the industry, are required to obtain permits before commencement of the project. Such permits include operating licenses and similar approvals related to plant site, land use, construction, and environment. To encourage the cooperation and support of the local governments of the localities of the power plants, it has been and will be our policy to seek investment in such power plants by the relevant local governments.

Power plant construction

We have generally acted as the general contractor for the construction of our power plants. Equipment procurement and installation, site preparation and civil works are subcontracted to subcontractors through a competitive bidding process. All of our power plants were completed on or ahead of schedule, enabling certain units to enter service and begin generating income earlier than the estimated in-service date.

Plant start-up and operation

We have historically operated and intend to continue to operate our power plants. Our power plants have established management structures based on well-developed management techniques. We select the superintendent for a new power plant from the senior management of our operating plants early in the construction phase of the new plant, invest in the training of operational personnel, adopt management techniques that improve efficiency and structure our plant bonus program to reward efficient and cost-effective operation of the plant in order to ensure the safety, stability and high availability factor of each power plant. Our senior management meets several times a year with the superintendents of the power plants as a group, fostering a team approach to operations, and conducts annual plant performance reviews with the appropriate superintendent, during which opportunities to enhance the power plant's performance and profitability are evaluated.

After a coal-fired generating unit is constructed, the contractor tests its installation and systems. Following such tests, the contractor puts the unit through a continuous 168-hour trial run at full load. After successfully passing the continuous 168-hour test and obtaining approval from the local governments, the unit may commence its commercial operation. Trial run of a wind power project consists of two phases: (i) trial run of single wind power generating unit and (ii) trial run of the entire wind power project as a whole. After successfully passing the trial run, the wind power project may commence its commercial operation.

Development of Power Plants in Singapore

The Singapore electricity industry had traditionally been vertically integrated and owned by the government. Since 1995, steps have been taken to liberalize the power industry, including the incorporation of the

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Public Utilities Board ("PUB") in 1995, establishment of Singapore Electricity Pool ("SEP") in 1998, formation of Energy Market Authority ("EMA") in 2001, and the evolvement of the SEP into the New Electricity Market of Singapore ("NEMS") in 2003. The EMA is a statutory body responsible for the economic, technical and competition regulation of the gas and electricity industry in Singapore. In carrying out its functions as the regulator of the power sector, EMA is empowered under the Electricity Act to issue and enforce licenses, codes of practices and performance standards. Energy Market Company Pte Ltd. (the "EMC") is the market company licensed to operate the wholesale market, or the NEMS.

In Singapore, a company is required to hold a generation license issued by the EMA if it generates electricity by means of one or more generating units with capacity of 10 MW or above. If connected to the power grid, the generating unit(s) must be registered with the EMC and will have to compete with other power generation companies to secure dispatch in the NEMS.

To ensure adequate electricity supply in Singapore, the EMA targets a minimum reserve margin (the excess of generating capacity over peak electricity demand) of 30% based on a loss of load probability (a measure of the probability that a system demand will exceed capacity during a given period, often expressed as the estimated number of days over a year) of three days per year. The 30% required reserve margin is to cater for scheduled maintenance as well as forced outages of generating units in the system. If the reserve margin falls below the required 30% due to demand growth and/or plant retirements, it would be an indication that new generation investments in generation units are needed to maintain system security.

The EMA intends to keep the increase and decrease in generating capacity commercially driven as far as practicable. As a precaution against the risk of insufficient generating capacity in the system, the EMA has planned to put in place a capacity assurance scheme to incentivize new generation planting in case new generating capacity that is required to maintain system security is not forthcoming from the market. EMA has not provided any update on the proposed scheme but given the current oversupply of capacity, it is not anticipated that the scheme will be put into place anytime soon.

By most measures of market power, the Singapore market is highly concentrated, as the three largest power generation companies account for approximately 60% of total power capacity. Since December 2002, EMA has imposed a licensed capacity cap (in MW) on these three power generation companies to prevent them from increasing their market dominance/power. Following a review of the vesting contract regime in 2016, EMA imposed a 25% cap on capacity market share to all generation licensees to prevent structural increases in market concentration/power. With regard to the three largest power generation companies, the cap imposed by EMA is the higher of either the 25% capacity market share cap or their respective licensed capacity cap, until the expiry of their respective generation license. This provides an option for the three largest power generation companies to increase their generation capacities beyond their current generation license up to 25% capacity market share cap.

New entrants as well as existing competitors have invested in new generating capacity or repowering of existing plants to take advantage of the LNG Vesting Scheme. This will impact the market negatively as these new capacities compete for market share as well as to avoid the gas take-or-pay penalties arising out of an oversupplied market.

EMA issued a Singapore Electricity Market Outlook (SEMO) 2017, which provides a long-term outlook of the energy market, such as the projected supply and demand conditions to facilitate power generation investment decisions. Based on the data provided by EMA, there will be 1600MW and 500MW of reduction in capacity in 2019 and 2020 respectively.

We are in the process of developing the Tembusu Multi-Utilities Complex (the "TMUC") in Singapore. The TMUC is expected to consist of a co-generation plant, a desalination plant and a wastewater treatment facility, with a total installed capacity of 165 MW. The complex will be developed in multiple phases in order to meet customers' demand. Phase 1 consists of 1 x 450 t/h coal-biomass co-fired circulated fluidized bed boiler, 2 x 200 t/h diesel/natural gas-fired boilers and 1 x 101MW steam turbine-generator, and other components of the plant. Phase 2A consists of 1 x 450 t/h coal-biomass co-fired circulated fluidized bed boiler, 1 x 200 t/h diesel/natural gas-fired boiler and 1 x 32MW steam turbine-generator, and other components of the plant. Phase 1 and Phase IIA commenced commercial operations in March 2013 and June 2014 respectively. The first train of 62.5 m³/h

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wastewater treatment facility commenced commercial operation in September 2015.  TPL owns 100% equity interest in this project.

TPL collaborated with ST Marine Pte. Ltd. (ST Marine), an affiliate of Singapore Temasek Holdings, to participate in the tender for Singapore’s Public Utilities Board (PUB)’s fifth desalination plant project under a Develop-Build-Own-Operate (BDOO) scheme on 6 July 2017. The capacity of the desalination plant is 30 MIGD (137,000 cubic meter per day). The desalination plant is located at Tembusu Jurong Island, adjacent to TMUC in order to achieve synergy. TPL and ST Marine incorporated a concession company, TP-STM Water Resources Pte. Ltd. (TP-STM Water Resources), on 1 November 2017 and executed the Water Purchase Agreement (WPA) with PUB on 6 November 2017. TPL owns 60% equity interests in TP-STM Water Resources. The project commercial operation date (PCOD) is scheduled for June 2020. The term of concession is 25 years from the PCOD.

Pricing policy

Pricing policy in China

Prior to April 2001, the on-grid tariffs for our planned output were designed to enable us to recover all operating and debt servicing costs and to earn a fixed rate of return. Since April 2001, however, the PRC Government has gradually implemented a new on-grid tariff-setting mechanism based on the operating terms of power plants as well as the average costs of comparable power plants.

On July 3, 2003, the State Council approved the tariff reform plan and made it clear that the long-term objective of the reform is to establish a standardized and transparent tariff-setting mechanism.

Pursuant to the NDRC circular issued in June 2004, on-grid tariffs for newly built power generating units commencing operation from June 2004 should be set on the basis of the average cost of comparable units adding tax and reasonable return in the regional grid. It provides challenges and incentives for power generation companies to control costs for building new generating units.

On March 28, 2005, the NDRC issued the Interim Measures on Regulation of On-grid Tariff, the Interim Measures on Regulation of Transmission and Distribution Tariff, and the Interim Measures on Regulation of End-user Tariff, or collectively the "Interim Measures", to provide guidance for the reform of tariff-setting mechanism in the transition period. Under the Interim Measures, the tariff is classified into on-grid tariff, transmission and distribution tariff and end-user tariff. Transmission and distribution tariff will be instituted by the government. The end-user tariff will be based on on-grid tariff and transmission and distribution tariff. The government is responsible for regulating and supervising power tariffs based on the principles of promoting efficiency, encouraging investment and improving affordability.

In December 2004, the NDRC proposed and the State Council approved the establishment of a linkage mechanism between coal and power prices, pursuant to which, the NDRC may adjust power tariffs if the change of the average coal price reaches 5% within a period of six months compared with the preceding same period. The change in a period, if less than 5%, will be carried forward to the future periods until the accumulated amounts reach 5%. With a goal to encourage power generation companies to reduce cost and improve efficiency, only around 70% of coal price increases will be allowed to pass to end-users through an increase of power tariffs, and power generation companies will bear the remaining 30%. In May 2005, the NDRC activated the coal-electricity price linkage mechanism for the first time to increase on-grid tariffs and end-user tariffs in the northeastern region, central region, eastern region, northwestern region and southern region. We accordingly increased the on-grid tariffs of our power plants in the northeastern region, central region, eastern region and northwestern region on May 1, 2005 and in the southern region on July 15, 2005. In June 2006, the coal-electricity price linkage mechanism was reactivated by the NDRC to increase on-grid tariffs and end-user tariffs in the northeastern region, central region, eastern region, northwestern region and southern region. We accordingly increased the on-grid tariffs of most of our power plants in the same regions on June 30, 2006.

In May 2007, NDRC and the State Environment Protection Administration jointly promulgated Interim Administrative Measures on Electricity Price of Coal-fired Generating Units installed with Desulphurization Facilities and the Operations of Such Facilities, which provided that a premium for desulphurization may be charged

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on the price of the electricity generated by generating units installed with desulphurization facilities on and from the date on which such desulphurization facilities are tested and accepted by a relevant environment protection regulator. Such pricing policy is also applicable to the old generating units which are installed with desulphurization facilities. The new measures are more stringent on the regulation of the coal-fired power plants with desulphurization facilities, setting forth the categories under which the price including a desulphurization premium will be offset or otherwise penalized based on the ratio of utilization of the relevant desulphurization facilities on an annual basis. As of December 31, 2013, all of our existing coal-fired generating units have installed and operated the desulphurization facilities and enjoyed the desulphurization premium.

In June 2008, NDRC issued Notice of Raising the Power Tariff, pursuant to which, the power tariff in provincial grids nationwide was increased by an average of RMB0.025 per kWh. In August 2008, NDRC issued Notice of Raising the On-grid Tariffs of the Thermal Power Plants, pursuant to which, the on-grid tariff of thermal power plants, including plants fueled by coal, oil, gas and co-generation, was increased by an average of RMB0.02 per kWh.

On February 25, 2009, NDRC, SERC and China National Energy Administration jointly promulgated the Notice regarding Cleaning up the Concessional Tariff Scheme, pursuant to which, (i) the concessional tariff scheme at the local level is banned, and (ii) certain measures, such as direct purchase by large end-users and adopting peak and off-peak power pricing policy, will be carried out to reduce enterprises' power cost. In addition, the notice emphasizes the supervision and inspection over the setting of power tariffs. On October 11, 2009, in order to promote a fair market condition and the optimization of electric power resources, NDRC, SERC and China National Energy Administration jointly promulgated the Circular on Regulating the Administration of Electric Power Transaction Tariff to regulate the tariff-setting mechanism for the on-grid tariff, transmission and distribution tariff and end-user tariff and clean up the local preferential power tariffs provided to high energy consumption companies. Pursuant to a notice issued by NDRC, with effect from November 20, 2009, certain adjustments on the on-grid tariffs have been made in various regions of China in order to resolve the inconsistencies in tariffs, rationalize the tariff structure and promote the development of renewable energy.

In 2010, the PRC Government started to implement the direct power purchase policy. As of December 31, 2013, some of the provinces where we operate power plants are approved by the NDRC to implement the direct power purchase by large power end-users. In addition, during 2010 SERC issued several circulars and notices to regulate the trans-provincial and interregional transaction of power and/or power generation right, in which the power purchase price shall be freely determined by negotiation through the market pricing mechanism. In December 2012, SERC issued another circular to further regulate the trans-provincial and interregional transaction of power and/or power generation right.

In May 2011, NDRC issued a notice, increasing the on-grid tariffs of thermal power plants to partially compensate the increased costs incurred by thermal power plants resulting from increases in coal prices. Different adjustments on tariffs were made in different provinces. In November 2011, PRC Government made further nationwide adjustments on power tariffs, including an average of RMB0.026 per kWh increase in on-grid tariff for thermal power plants. In December 2012, NDRC issued a notice, which provided that, from January 1, 2013, NDRC would provide an RMB0.008 per kWh denitrification premium for all coal-fired generating units equipped with denitrification facilities that are inspected and accepted by authorized national or provincial authority.

In March 2012, the PRC Government issued a notice, which mandated the confirmation method for the power generation projects, subsidy standards and fund appropriation standards relating to the application for a subsidy for renewable energy power price of power generation projects. In December 2012, the PRC Government issued the Notice on the Guidelines of Enhancing the Reform of Marketization of Coal Used for Power Generation to further reform the coal pricing mechanism. Effective January 1, 2013, all key coal purchase contracts between power generation companies and coal suppliers were terminated and contracts are directly negotiated between power generation companies and coal suppliers without the interference of local governments. According to the notice, the NDRC will no longer issue inter-provincial guidance on the railway transportation capacity plan. In addition, the dual-track coal pricing system, which included the government regulated mandatory annual contract pricing and spot market prices for the remaining coal production output of each coal supplier, was abolished due to the narrowing gap between the government regulated coal contract price and the spot market price. Pursuant to the notice, future coal contract prices will be determined by the market and freely negotiated between power generation companies

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and coal suppliers. Furthermore, the coal-electricity price linkage mechanism will continue to be implemented and constantly improved. Once the coal price fluctuates for more than 5% on an annual basis, the on-grid tariff would be adjusted accordingly. The notice also mandates that power generation companies absorb 10% of the coal price fluctuations as compared to 30% prior to 2013. Given the narrow gap between the key contract coal price and the spot market price, the overall on-grid tariff was not adjusted.

In September 2013, NDRC issued the Notice on the Adjustment of Power Tariff for Power Generation Companies and Related Matters, pursuant to which the on-grid tariffs for coal-fired generating units were lowered, by a national average of RMB0.013 per kWh, and the on-grid tariff for gas turbine power plants was slightly increased. The Notice also increased the power tariff for power-generating companies that are equipped with denitrification facilities and dust-removal facilities.

In March 2014, the NDRC and the Ministry of Environmental Protection jointly issued the Measures to Monitor the Operation of Environmental Protection Tariffs and Facilities Regarding Coal-fired Generating Units, under which the standard on-grid electricity tariff incorporating environmental protection element will no longer be applicable to coal-fired generating units unless the coal-fired power generating enterprise has completed renovation for environmental protection acceptable after testing.  In August 2014, the NDRC issued the Notice to Further Resolve Conflicts Regarding Environmental Protection Tariff, under which the standard on-grid tariff for coal-fired power generating units is lowered with the view to resolve the environmental protection tariffs conflicts such as denitrification and dedusting of coal-fired power generation enterprises, and setting the tariff subsidy for denitrification and dedusting at RMB0.01/kWh and RMB0.002/kWh, respectively.  In December 2014, the NDRC issued the Notice Regarding Adjusting Standard On-grid Tariff for Onshore Wind Powers, under which the standard on-grid tariff for each of Class I, Class II and Class III wind powers is lowered by RMB0.02, and the tariff for Class IV wind power remains unchanged at RMB0.61/kWh.  In December 2014, the NDRC issued the Notice Regarding Certain issues of On-grid Tariff of Natural Gas Powers, defining the principles to formulate and modify the tariff of electricity generated by natural gas, aiming to regulate on-grid tariff administration and used facilitate healthy and orderly growth of natural gas power generating sector in China.

In April 2015, the NDRC issued the Notice on Reducing On-grid Tariff for Coal-fired Power and Commercial and Industrial Power Tariff in order to release the pressure on tariffs for natural gas and for companies that utilize denitration or dedusting techniques or with extremely low emissions, to lower commercial and industrial power tariff, and to moderately lower on-grid tariff for coal-fired power, the power tariff in provincial grids nationwide was decreased by an average of RMB0.02 per kWh.

In December 2015, the NDRC issued the Notice on Issues of Perfecting the Mechanism of Coal-electricity Price Linkage, confirming the annual cycle of the mechanism, the NDRC's leading role in implementing the mechanism, and provinces and cities' executor role in implementing the mechanism. The coal-electricity prices with which the mechanism of coal-electricity price linkage is in line are indexed to the national thermal coal price index. The benchmark coal price is the provincial average price in China's thermal coal price index of 2014. And the benchmark tariff is in principle the on-grid tariff in line with the benchmark coal price. The tariff adjustment may be triggered after the annual review based on the calculations according to the formula given by Policy of the Mechanism of Coal-electricity Price Linkage. Also in December 2015, the NDRC issued the Notice on Reducing On-grid Tariff for Coal-fired Power and General Commercial and Industrial Power Tariff, which ordered a decrease of national on-grid tariffs for coal power and general commercial and industrial power tariff by an average of RMB0.03 per kWh, based on the relevant regulations prescribed in the mechanism of coal-electricity price linkage. In the same month of 2015, the NDRC also issued the Notice on Improving On-grid Tariff Policy for Wind Power and Photovoltaic Power, which established a policy that the benchmark on-grid tariffs for wind power and photovoltaic power decrease in line with the development of these two types of power plants. To further indicate the investment expectation, the Notice confirmed the benchmark on-grid tariffs for wind power of 2016 and 2018. The 2016 benchmark on-grid tariff for photovoltaic power has been confirmed, yet that of 2017 and onward will be confirmed at a later stage.

On January 1, 2016, after the annual review based on the calculations prescribed in the mechanism of coal-electricity price linkage, the NDRC adjusted on-grid tariff for coal-fired power and commercial and industrial power tariff.  National on-grid tariffs for coal power decreased by an average of RMB0.03 per kWh, based on the relevant regulations, RMB0.01 per kWh of which shall be contributed to a specialized corporate restructuring fund with the

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purpose of supporting placement of personnel laid off during the supply-side reform. The NDRC also increased on-grid tariff for renewable power by RMB0.004 per kWh in order to replenish the renewable energy fund and to support emission reduction efforts of coal-fired power generation enterprises and to resolve conflicts regarding environmental protection tariffs.

In December 2016, in order to implement General Office of the State Council’s Energy Development Strategic Action Plan (2014-2020) about achieving equal on-grid tariff for wind and solar power with coal power to encourage the orderly development of wind and solar power by properly guiding investments in these areas, the NDRC issued the Announcement on the Adjustment of Standard On-Grid Tariff for Solar and Onshore Wind Power (NDRC Price [2016]No. 2729). From January 1, 2017, standard on-grid tariffs for Class I, Class II and Class III solar powers were adjusted to RMB0.65 per kWh, RMB0.75 per kWh and RMB0.85 per kWh, respectively, which is RMB0.15 per kWh, RMB0.13 per kWh and RMB0.13 per kWh lower than the corresponding tariff in 2016. Such standard on-grid tariff will be adjusted annually. 2018 standard on-grid tariff for Class I, Class II and Class III onshore wind power decreased by RMB0.04 per kWh, RMB0.02 per kWh, RMB0.01 per kWh, respectively.  Yunnan Province has been recategorized as Class II from Class IV, which meant the standard on-grid tariff for wind power generated in Yunnan province will decrease by an additional RMB0.12 per kWh.

In June 2017, NDRC issued Circular on Canceling or Reducing Governmental Funds and Additional Charges and Reasonably Adjusting On-Grid Tariff Structure (NDRC Price [2017]No. 1152), which reduces major water conservancy project construction fund and large and medium-sized reservoir resettlement support fund by 25% to relieve power generation enterprises from its difficulties in daily operations.

In December 2017, NDRC issued Circular on the Pricing Policy of Photovoltaic Projects in 2018 (NDRC Price [2017]No. 2069), From January 1, 2018, standard on-grid tariffs for Class I, Class II and Class III solar powers were adjusted to RMB0.55 per kWh, RMB0.65 per kWh and RMB0.75 per kWh, respectively (tax included). All distributed photovoltaic projects commencing operation after January 1, 2018, adopting "Self Generate, Self Consume, with Spare Power Put On-grid" model, shall apply a subsidy of RMB0.37 per kWh. All distributed photovoltaic projects adopting "All Power Put On-grid" model shall apply the price set by the region they locate at.

Pricing Policy in Singapore

Pricing Policy of Electricity in Singapore

All licensed power plants in Singapore sell their plant output into the NEMS under a half-hourly competitive bidding process, during which a clearing price is determined based on the projected system demand. All successful bids/power plants that are cleared in each half hour will be dispatched automatically by control signals from the Power System Operator, a division of the EMA, and in turn will receive the cleared price as determined earlier. The cleared price paid to the power plants is the nodal price at their point of injection, and the Market Clearing Engine, the computer software that creates dispatch schedules and determines market clearing prices, automatically produces a different price at each node on the network. A Demand Response scheme is being introduced where demand could be curtailed in response to high prices in return for a share of the total savings arising out of lower prices as a result of demand being reduced.

As there is no certainty in the price or the dispatch levels for any power plants, operators of power plants may enter into short- or long-term financial arrangements with other counterparties or their own subsidiary company involved in the electricity retail market (to end consumers of electricity) to secure stability in their revenue stream and manage the commercial risks associated with operations in a competitive market.

In addition, the major power generation companies, including Tuas Power, are obliged to hold vesting contracts. Vesting contracts are a form of the bilateral contract imposed/vested on the generation companies who had been licensed by the EMA before the establishment of NEMS. Market Support Services Licensee is the counterparty to all of the vesting contracts, and the vesting contracts are settled between the parties through the EMC's settlement system. The quantity of vesting contract allocated to the power generation company depends on the proportion of such power generation company's capacity to the total licensed or planned generation capacity at the commencement of the vesting contract regime. Vesting contract price is set by the EMA at the long-run marginal cost and is adjusted by the EMA on a periodic basis for changes in the long-run marginal cost and on a quarterly basis for inflation and changes in fuel prices and electricity demand. Such mechanism helps protect the profit

24

margins of the power generation companies in the Singapore market to a large degree. The contract quantity and price are currently recalculated every three months. There has been a rollback on the vesting contract level from 40% in 2015 to an immediate level of 25%. Following the review of vesting contract regime by EMA in 2016, it is determined that the vesting contract level will maintain at 25% until the end of first half of 2018 and reduce to LNG vesting level by the second half of 2019. The vesting contract regime will be phased out by 2023 when the LNG vesting contracts expire. This translates into increased exposure to a more volatile pool price. The authority has introduced a demand response scheme where loads can choose to participate in peak load shaving and share in part of the consumer surplus and an Electricity Futures Market which attracts independent retailers to enter the Singapore market. We continue to monitor closely and evaluate the impact of such markets on our business.

The gross pool design adopted in NEMS means all quantity sold by retailers to contestable consumers (currently defined as customers with average monthly usage more than of 42,000kWh) has to be in turn purchased from the pool. The retailers pay for their electricity purchases at the Uniform Singapore Energy Price, which is a weighted average of nodal prices and is determined on a half-hourly basis in the NEMS.

Pricing Policy of Utilities in Singapore

Utilities supply to industrial customers is based on long-term contracts. The pricing of utilities has both fixed and variable components.

Power sales

Each of our power plants has entered into a written agreement with the local grid companies for the sales of its planned power output. Generally, the agreement has a fixed term of one year and provides that the annual utilization hours of the power plant will be determined with reference to the average annual utilization hours of the similar generating units connected to the same grid.

In 2003, SERC and the State Administration of Commerce and Industry jointly promulgated a model contract form (the "Model Contract Form") for use by power grid companies and power generation companies in connection with electricity sale and purchase transactions. The Model Contract Form contains provisions on the parties' rights and obligations, amount of electricity subject to purchase, payment method and liabilities for breach of contract, etc. We believe that the publication of the Model Contract Form has facilitated the negotiation and execution of electricity purchase contracts between power grid companies and power generation companies in a fair, transparent and efficient manner. In 2016, a majority of the agreements entered into between our power plants and the local grid companies were based on the Model Contract Form. In 2017, our power plants, large power end-users and electric power companies started to sign tripartite contracts.

From 2008, with the purpose of improving energy usage efficiency, the government implemented an optimized-dispatch electricity policy in some provinces in China, as a result of which, the utilization hours of low energy consumption and low pollution generating units have been improved. We believe that our large generating units with high efficiency and low emission are competitive in the market.

From 2015, several rules have been issued to implement the plan for power market reform, including Regulation on Market Access and Exit of Electric Power Company, Regulations on Orderly Opening Up Electricity Distribution Business, Basic Rules for Mid- to Long- Term Electricity Trade (Interim), Circulate on Orderly Opening Up Power Generation and Consumption Plans, Response regarding Approving Regulation on Pilot Inter-Region Incremental Renewable Energy Power Trade (Interim) and Circular on Establishment of Pilot Electricity Power Stock Exchange to further the reform of electricity market and the establishment of the electricity exchange.

Starting from 2016, two nationwide and 33 provincial level electricity exchanges have been established, and we have invested in the electricity exchanges established in Chongqing, Shanxi and Hubei, holding 3%, 5% and 5% equity interests, respectively.

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More than 20 market administration committees have been established, and we have participated in the market administration committees established in areas such as Beijing, Guangzhou, Jiangsu, Shanxi, Liaoning, Shanghai, Henan, Hubei, Chongqing, Jilin and Shandong.

At the end of 2017, all municipalities, autonomous regions and provinces, except for Heilongjiang and Tibet, have finished their approval of electricity distribution price.

In 2017, there were more than 3,600 electric power companies being admitted to participating in the electricity trade. We have established 18 provincial level energy sales companies and 13 municipal level energy sales companies, 24 of them have been admitted to participate in the electricity trade in 14 provincial regions. We have participated in nine pilot incremental electricity distribution projects among the total 105 projects nationwide. Up to now, Shanxi, Henan, Gansu, Hunan and Jiangsu have organized the bidding process for investment and we have become a controlling shareholder in three projects located in Gansu. The list of the second group of the pilot projects has been released and relevant works are being carried out by authorities.

The PRC Government started in 1999 to experiment with a program to effect power sales through competitive bidding in some provinces. Furthermore, the PRC Government started in 2009 to experiment with a program for direct power purchase by large power end-users, and has promulgated relevant rules governing the price and method of direct power purchase transactions as well as the market entrance and exit mechanism. In accordance with the above policies, we have conducted research on the program for direct power purchases by large power end-users. In July 2013, China National Energy Administration issued the Notice on Direct Purchases between Power End-users and Power Generation Companies, which officially implemented the direct purchases programs by large end-users. Among the provinces where we operate our power plants, seven of them, namely Shanxi, Jiangsu, Henan, Hunan, Guangdong, Fujian and Gansu, started the direct purchase program in 2013, and four of them, namely Jiangxi, Yunnan, Hubei and Liaoning, are actively promoting the direct purchase pilot programs. In 2014, the programs were also implemented in Zhejiang and Anhui. In addition to these regions, the direct purchase programs by large end-users were also implemented in Liaoning, Jiangxi, Hubei and Chongqing in 2015 and in the whole nation except Hainan by 2017. The national volume of electricity sold in 2017 via the direct purchase programs was approximately 1,300 billion kWh, which represented a huge increase from the 800 billion kWh sold in 2016. Most of the sale was negotiated between power producers and large end users, with a minority completed through the competitive bidding process or listed transactions. We participated in all regions with pilot direct purchase programs.

                In general, establishing liberalized power markets represents the general trend in China's power market reform, which is conducive to creating a competitive environment that is fair, transparent and equitable.

The following table sets forth the average power tariff (RMB/MWh) of electric power sold by our power plants in China, for each of the five years ended December 31 through 2017 and the approved power tariff for 2018.

	Year Ended December 31,
	2013		2014		2015		2016		2017		2018
	Average Tariff		Average Tariff		Average Tariff		Average Tariff		Average Tariff		Approved Tariff
Heilongjiang Province
Xinhua Power Plant*		—		—		—		—		374.75		385.13
Hegang Power Plant*		—		—		—		—		368.12		383.00
Daqing Co-generation		—		—		—		—		368.09		384.00
Yichun Co-generation*		—		—		—		—		403.09		384.00
Sanjiangkou Wind Power*		—		—		—		—		605.82		630.00

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	Year Ended December 31,
	2013		2014		2015		2016		2017		2018
	Average Tariff		Average Tariff		Average Tariff		Average Tariff		Average Tariff		Approved Tariff
Linjiang Jiangsheng Wind Power*		—		—		—		—		605.82		630.00
Daqing Heping Aobao Wind Power*		—		—		—		—		—		620.00
Zhaodong Dechang Photovoltaic*		—		—		—		—		—		750.00
Jilin Province
Jiutai Power Plant*		—		—		—		—		385.03		383.10
Changchun Co-generation*		—		—		—		—		381.50		383.10
Nongan Biomass*		—		—		—		—		750.02		750.00
Linjiang Jubao Hydropower*		—		—		—		—		438.53		375.50
Zhenlai Wind Power*		—		—		—		—		566.31		595.00
Siping Wind Power*		—		—		—		—		569.21		610.00
Tongyu Tuanjie Wind Power*		—		—		—		—		535.27		580.00
Linjiang Jubao Photovoltaic		—		—		—		—		—		880.00
Liaoning Province
Dalian Power Plant		407.89		394.50		375.55		346.76		367.97		384.90
Dandong Power Plant		401.09		393.06		371.45		352.52		392.97		384.90
Yingkou Power Plant		406.85		399.33		378.32		344.71		365.73		376.64
Yingkou Co-generation		396.96		399.21		365.04		331.39		368.11		384.90
Wafangdian Wind Power		632.85		609.68		598.12		603.72		586.87		620.00
Changtu Wind Power		605.30		602.82		590.93		626.09		582.51		620.00
Suzihe Hydropower		330.00		330.00		329.96		332.67		330.00		330.00
Dandong Photovoltaic		—		—		—		950.00		950.00		950.00
Yingkou Co-generation Photovoltaic		—		—		—		950.00		950.00		950.00
Yingkou Xianrendao Co-generation Power		—		—		—		—		344.41		374.90
Jianchang Bashihan Photovoltaic		—		—		—		—		880.00		880.00
Xiao Deyingzi Photovoltaic		—		—		—		—		—		880.00
Chaoyang Heiniuyingzi Photovoltaic		—		—		—		—		880.00		880.00
Inner Mongolia Autonomous Region

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	Year Ended December 31,
	2013		2014		2015		2016		2017		2018
	Average Tariff		Average Tariff		Average Tariff		Average Tariff		Average Tariff		Approved Tariff
Huade Wind Power		520.00		520.00		520.00		471.22		452.91		520.00
Hebei Province
Shang’an Power Plant		431.15		429.39		401.79		358.48		366.23		382.27
Kangbao Wind Power		534.47		538.84		538.14		554.60		660.42		540.00
Kangbao Photovoltaic		—		—		—		784.95		982.50		982.50
Zhuolu Dabao Wind Power		—		—		—		—		519.96		520.00
Shang'an Dinghanhuichang Photovoltaic		—		—		—		—		—		507.20
Gansu Province
Pingliang Power Plant		332.16		322.72		259.51		207.63		246.89		307.80
Jiuquan Wind Power		520.60		520.60		473.12		367.54		437.85		520.60
Jiuquan II Wind Power		—		540.00		497.75		402.36		449.50		540.00
Yumen Wind Power		—		520.60		472.01		390.06		430.53		520.60
Yigang Wind Power		—		—		—		447.65		554.72		580.00
Ningxia Autonomous Region
Ruyi Helan Rooftop Photovoltaic		—		—		—		—		—		800.00
Beijing Municipality
Beijing Co-generation		529.47		514.72		480.70		454.99		689.91		462.60
Beijing Co-generation CCGT		468.79		882.33		959.91		687.33		674.07		650.00
Tianjin Municipality
Yangliuqing Co-generation		483.73		434.28		416.54		370.82		393.95		402.90
Lingang Co-generation CCGT		—		—		817.57		726.44		699.14		700.00
Chenxi Photovoltaic		—		—		—		—		879.99		880.00
Shanxi Province
Yushe Power Plant		393.37		391.22		334.87		253.01		323.54		343.00
Zuoquan Power Plant		389.83		382.01		333.25		252.96		314.64		342.00
Dongshan CCGT		—		—		703.80		682.40		678.32		670.50
Yushe Photovoltaic		—		—		—		—		929.74		880.00

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	Year Ended December 31,
	2013		2014		2015		2016		2017		2018
	Average Tariff		Average Tariff		Average Tariff		Average Tariff		Average Tariff		Approved Tariff
Shandong Province
Dezhou Power Plant		464.89		463.36		445.44		389.78		401.45		428.00
Jining Power Plant		455.46		446.73		429.20		372.57		395.54		407.41
Xindian Power Plant		453.35		448.55		432.30		381.58		397.61		410.90
Weihai Power Plant		474.38		461.18		440.45		382.53		404.81		423.30
Rizhao Power Plant Phase II		446.38		441.59		422.33		372.08		391.43		404.90
Zhanhua Co-generation		446.56		434.71		424.66		389.33		437.74		404.90
Baiyanghe Power Plant*		—		—		—		—		400.42		418.30
Rizhao Power Plant Phase I*		—		—		—		—		458.82		463.50
Jiaxiang Power Plant*		—		—		—		—		388.05		404.90
Jining Co-generation*		—		—		—		—		395.19		404.90
Qufu Co-generation*		—		—		—		—		390.16		404.90
Huangtai Power Plant*		—		—		—		—		390.59		404.90
Yantai Power Plant*		—		—		—		—		409.84		433.90
Linyi Power Plant*		—		—		—		—		402.16		415.03
Jining Yunhe Power Plant*		—		—		—		—		403.84		415.30
Liaocheng Co-generation*		—		—		—		—		390.49		415.90
Taian Power Plant*		—		—		—		—		371.67		404.90
Laiwu Power Plant*		—		—		—		—		384.36		402.38
Muping Wind Power*		—		—		—		—		627.56		620.00
Penglai Wind Power*		—		—		—		—		569.97		615.00
Rushan Wind Power*		—		—		—		—		634.98		620.00
Changdao Wind Power*(3)		—		—		—		—		635.20		—
Rongcheng Wind Power*		—		—		—		—		622.69		610.00
Dongying Wind Power*		—		—		—		—		623.54		620.00
Boshan Photovoltaic*		—		—		—		—		1,000.00		1,000.00
Sishui Photovoltaic*		—		—		—		—		1,109.60		1,000.00

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	Year Ended December 31,
	2013		2014		2015		2016		2017		2018
	Average Tariff		Average Tariff		Average Tariff		Average Tariff		Average Tariff		Approved Tariff
Gaozhuang Photovoltaic*		—		—		—		—		592.44		820.00
Jining Co-generation Photovoltaic*		—		—		—		—		592.44		611.45
Zhanhua Qingfenghu Wind Power		—		—		—		—		—		620.00
Laiwu Niuquan Photovoltaic		—		—		—		—		—		394.90
Jining New Energy		—		—		—		—		—		611.45
Weihai Haibu Photovoltaic		—		—		—		—		830.00		830.00
Zhanhua Qingfenghu Photovoltaic		—		—		—		—		1,080.00		980.00
Furuite Rooftop Photovoltaic		—		—		—		—		—		980.00
Jining Weishan Zhaozhuang Photovoltaic		—		—		—		—		—		830.00
Henan Province
Qinbei Power Plant		437.01		435.42		401.65		354.30		374.82		387.9
Zhongyuan CCGT*		—		—		—		—		668.17		600.00
Luoyang Co-generation Power		—		—		384.33		365.91		376.26		387.90
Luoyang Yangguang Power		—		—		365.10		316.83		349.95		387.90
Mianchi Co-generation		—		—		—		328.10		610.00		382.90
Zhumadian Wind Power		—		—		—		610.00		374.82		610.00
Qinbei Dianchanghuichang Photovoltaic		—		—		—		—		—		377.90
Jiangsu Province
Nantong Power Plant		435.69		436.00		430.98		407.55		417.42		401.00
Nanjing Power Plant		436.35		463.50		453.08		400.81		428.37		401.00
Taicang Power Plant		432.81		419.19		387.68		349.31		372.74		399.32
Huaiyin Power Plant		449.87		438.98		450.81		433.30		487.47		401.00
Jinling Power Plant
Coal-fire		428.38		408.24		385.24		348.86		366.53		401.00
CCGT		585.53		606.21		712.13		708.41		593.09		606.00

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	Year Ended December 31,
	2013		2014		2015		2016		2017		2018
	Average Tariff		Average Tariff		Average Tariff		Average Tariff		Average Tariff		Approved Tariff
CCGT Co-generation		635.42		690.00		760.99		617.12		604.16		617.00
Suzhou Co-generation		—		508.66		489.38		453.42		465.86		480.00
Nanjing Thermal Power		—		—		—		445.21		469.99		475.00
Qidong Wind Power		541.34		555.92		556.76		553.91		556.03		549.67
Rudong Wind Power		610.00		610.00		610.00		606.24		609.29		610.00
Tongshan Wind Power		—		—		—		610.00		610.00		610.00
Luhe Wind Power		—		—		—		—		—		610.00
Rudong Offshore Wind Power		—		—		—		—		850.00		850.00
Suzhou CCGT		—		—		—		—		612.79		617.00
Guanyun Co-generation.		—		—		—		—		433.00		475.00
Yicheng Wind Power		—		—		—		—		—		610.00
Taicang Dianchanghuichang Photovoltaic		—		—		—		—		—		954.00
Guanyun Photovoltaic		—		—		—		—		—		980.00
Shanghai Municipality
Shidongkou I		453.27		438.21		435.48		395.18		401.11		410.30
Shidongkou II		442.00		437.54		410.35		380.60		397.96		416.50
Shidongkou Power		462.02		449.92		427.42		382.31		395.75		425.50
Shanghai CCGT(2)		820.92		866.20		937.13		899.62		911.36		705.60
Chongqing Municipality
Luohuang Power Plant		448.57		440.90		427.84		376.92		392.74		399.13
Liangjiang CCGT		—		—		872.20		649.74		811.53		491.30
Zhejiang Province
Yuhuan Power Plant		484.79		468.71		452.99		403.82		418.58		422.30
Changxing Power Plant		—		431.03		487.93		420.54		429.18		442.30
Tongxiang CCGT(2)		—		1,298.37		1,278.17		887.70		912.07		567.00
Changxing Photovoltaic		—		—		1,125.67		1,208.23		1,252.38		1,100.00

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	Year Ended December 31,
	2013		2014		2015		2016		2017		2018
	Average Tariff		Average Tariff		Average Tariff		Average Tariff		Average Tariff		Approved Tariff
Changxing Hongqiao Photovoltaic		—		—		—		980.00		1,119.24		1,080.00
Huzhou Distributed Photovoltaic		—		—		—		—		1,009.06		980.00
Hunan Province
Yueyang Power Plant		505.13		495.31		480.55		449.87		456.55		458.81
Subaoding Wind Power		—		494.00		611.72		610.00		605.55		610.00
Guidong Wind Power		—		—		610.00		610.00		608.54		610.00
Xiangqi Hydropower		390.00		410.00		410.00		404.19		376.17		380.00
Yueyang Xingang Photovoltaic		—		—		—		—		—		900.00
Yueyang Leigutai Photovoltaic		—		—		—		—		—		870.00
Hubei Province
Wuhan Power Plant		—		461.99		435.47		376.53		401.70		429.79
Jingmen Thermal Power		—		432.20		444.09		378.97		403.50		426.10
Yingcheng Thermal Power		—		—		477.26		392.73		405.69		426.10
Jieshan Wind Power		—		—		610.00		610.00		676.00		690.00
Enshi Maweigou Hydropower		356.96		366.59		379.26		380.43		383.42		370.00
Dalongtan Hydropower		—		366.89		374.80		376.38		370.00		370.00
Zhongxiang Hujiawan Wind Power		—		—		—		—		—		610.00
Suizhou Zengdufuhe Photovoltaic		—		—		—		—		880.00		990.00
Jiangxi Province
Jinggangshan Power Plant		482.95		468.92		443.73		399.06		409.42		426.18
Ruijin Power		—		466.57		441.24		399.27		411.81		424.30
Anyuan Power		—		—		424.63		400.98		415.17		424.30
Jianggongling Wind Power		—		—		—		610.00		610.00		610.00
Linghuashan Wind Power		—		—		—		—		—		610.00
Anhui Province
Chaohu Power Plant		—		412.93		409.79		351.24		371.86		394.40
Huaining Wind Power		—		—		—		610.00		610.00		610.00

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	Year Ended December 31,
	2013		2014		2015		2016		2017		2018
	Average Tariff		Average Tariff		Average Tariff		Average Tariff		Average Tariff		Approved Tariff
Hualiangting Hydropower		—		346.85		392.89		385.60		376.74		384.40
Fujian Province
Fuzhou Power Plant		442.81		441.83		392.29		348.95		375.59		408.35
Changle Photovoltaic		—		—		—		—		980.00		980.00
Guangdong Province
Shantou Power Plant		541.39		529.99		498.01		464.69		448.26		477.75
Haimen		514.30		503.18		483.38		440.21		425.50		463.00
Haimen Power		—		479.55		485.46		444.53		428.41		453.00
Shantou Photovoltaic		—		—		—		980.00		980.00		980.00
Yunnan Province
Diandong Energy		371.30		401.59		435.58		513.58		358.12		335.80
Yuwang Energy		377.41		395.96		545.42		1,394.49		329.35		335.80
Fuyuan Wind Power		—		610.00		600.61		494.71		478.37		610.00
Guizhou Province
Panxian Wind Power		—		—		—		610.00		595.68		610.00
Panxian Jiaoziding Wind Power		—		—		—		—		—		610.00
Hainan Province
Haikou Power Plant		—		474.14		457.71		420.45		429.17		436.85
Dongfang Power Plant		—		482.69		460.53		420.90		432.70		439.80
Nanshan CCGT		—		439.84		629.32		672.26		1,619.97		665.80
Wenchang Wind Power		—		619.72		571.95		609.78		608.99		610.00
Gezhen Hydropower		—		392.63		399.78		400.07		399.53		400.00
Dongfang Photovoltaic		—		—		—		1,010.00		1,010.00		1,000.00
Haikou Dianchanghuichang Photovoltaic		—		—		—		—		—		960.00
Guangxi Autonomous Region
Guilin Distributed Energy		—		—		—		—		—		574.00

33

Notes:

(1) The power plants marked * are newly acquired entities of the Company in January 2017.

(2) The tariff of Shanghai Combined Cycle and Tongxiang Combined Cycle consist of on-grid settlement price and capacity subsidy income.

(3) Changdao Wind Power has been shut down.

Power sales in Singapore

According to EMC, the total registered capacity in commercial operation for 2017 in Singapore was 13,597 MW, of which 10,508 MW belonged to CCGT/Cogen/Trigen facilities. In 2017, the peak demand for electricity was 6,967 MW against 2016's 6,846 MW. The power market in Singapore is competitive, and power generation companies compete to sell their power output into NEMS through a bidding process with hedging via vesting contracts and retail sales. For the year ended December 31, 2017, power sold through vesting contracts represented approximately 25% of total system demand. The existing Vesting Contract Scheme will be maintained at 25% of system demand until the end of the first half of 2018, gradually dropping to LNG vesting level in second half of 2019. The decrease in allocated vesting contract volumes will have to be made up through increased retail sales, or otherwise, be translated into increased exposure to more volatile pool prices.

The volatility in the sales price of the revenue associated with the sale of electricity in the NEMS is effectively managed via vesting contracts and direct retail sales which is carried out through a Tuas Power's subsidiary. The effective tariffs Tuas Power received for its electricity output are thus largely dependent on the vesting contract prices and volumes as well as prices secured under retail sales. The EMA has announced the start of Open Electricity Market (previously known as Full Retail Contestability) in 2018, with a soft launch planned in April 2018.

Utility sales in Singapore

In 2017, TMUC sold 2,579,205 MT of steam to customers, representing an increase of 19.9% as compared to 2,151,143 MT in 2016.

Fuel supply arrangements

The majority of our power plants in capacity are thermal plants, which are fueled by coal, gas and oil.

Coal

Our coal supply for our coal-fired power plants is mainly obtained from numerous coal producers in Shanxi Province, Inner Mongolia Autonomous Region and Gansu Province. We also obtain coal from overseas suppliers.

In 2015, the average coal purchasing price decreased significantly from the previous year. We purchased 130.56 million tons of coal and consumed 132.12 million tons of coal. Of our total coal purchases, 48% was purchased under annual contracting arrangements and the remainder was purchased on the open market. The coal purchase price for our Company, including transportation costs and miscellaneous expenses, averaged approximately RMB408.71 per ton in 2015. Our average unit fuel cost in 2015 decreased by 13.68% from that in 2014.

In 2016, we purchased 131.60 million tons of coal and consumed 132.18 million tons of coal. Of our total coal purchases, 39% was purchased under annual contracting arrangements and the remainder was purchased on the open market. The coal purchase price for our Company, including transportation costs and miscellaneous expenses, averaged approximately RMB423.16 per ton in 2016, representing an increase of 3.54% compared to 2015. Our average unit fuel cost in 2016 decreased by 1.76% from that in 2015.

In 2017, we purchased 167.89 million tons of coal and consumed 171.55 million tons of coal. Of our total coal purchases, 64% was purchased under annual contracting arrangements and the remainder was purchased on the

34

open market. The coal purchase price for our Company, including transportation costs and miscellaneous expenses, averaged approximately RMB547.72 per ton in 2017, representing an increase of 29.4% compared to 2016. Our average unit fuel cost in 2017 increased by 32.41% from that in 2016.

Singapore's Tuas Power used coal as primary fuel for its TMUC's cogeneration plants. Coal is procured from coal producers in Indonesia via two long-term coal supply contracts with 10 year and 15-year terms respectively, and short-term contracts. The prices are indexed to the Global Coal Newcastle Index and HBA (Coal Reference Price which is regulated by Indonesia Government) Index. In 2017, Tuas Power purchased an incremental amount of coal in the open market.

Gas

Currently, the Company has 12 Combined Cycle Gas Turbine Power Plants ("CCGT") in China, including:

· Huaneng Shanghai Combined Cycle Gas Turbine Power Plant ("Shanghai CCGT") with gas supply transported through the pipeline of "West-East Gas Transport Project";

· Huaneng Jiangsu Jinling Combined Cycle Gas Turbine Power Plant ("Jinling CCGT") with gas supply transported through the pipeline of "West-East Gas Transport Project";

· Huaneng Jiangsu Jinling Combined Cycle Gas Turbine Co-generation Power Plant ("Jinling CCGT Co-generation") with gas supply transported through the pipeline of "West-East Gas Transport Project";

· Huaneng Beijing Co-generation CCGT Power Plant ("Beijing Co-generation CCGT") with gas supply transported through Shaanxi-Beijing Pipeline;

· Huaneng Zhejiang Tongxiang Combined Cycle Gas Turbine Power Plant ("Tongxiang CCGT"), with gas supply transported through the pipeline of "West-East Gas Transport Project";

· Huaneng Chongqing Liangjiang Combined Cycle Gas Turbine Power Plant ("Liangjiang CCGT") with gas supply transported through the pipeline of "West-East Gas Transport Project";

· Huaneng Tianjin Lingang Combined Cycle Gas Turbine Co-generation Power Plant ("Lingang CCGT Co-generation") with gas supply by CNOOC Tianjin Trading Branch and Petro China Tianjin Trading Branch;

· Huaneng Shanxi Dongshan Combined Cycle Gas Turbine Power Plant ("Dongshan CCGT") with gas supply transported through Shaanxi-Beijing Pipeline II;

· Huaneng Hainan Nanshan Combined Cycle Gas Turbine Power Plant ("Nanshan CCGT") with gas supply by CNOOC Hainan Branch;

· Huaneng Zhongyuan Combined Cycle Gas Turbine Power Plant ("Zhongyuan CCGT") with gas supply transported through the pipeline of "West-East Gas Transport Project";

· Huaneng Jiangsu Suzhou Combined Cycle Gas Turbine Co-generation Power Plant ("Suzhou CCGT Co-generation ") with gas supply transported through the pipeline of "West-East Gas Transport Project"; and

· Huaneng Guangxi Guilin Distributed Energy Project ("Guilin Distributed Energy") with gas supply by Petro China Nanning Branch.

In addition, Tuas Power in Singapore has five gas-fired combined cycle generating units and three gas-fired backup boilers. The piped gas for Tuas Power is provided by Pavilion Gas Pte Ltd and Sembcorp Gas Pte Ltd., whereas LNG is provided by Shell Gas Marketing Pte Ltd (formally known as BG Singapore Gas Marketing Pte Ltd).

35

Oil

Tuas Power maintains operation of one 600 MW oil-fired steam generating unit. The oil supply for Tuas Power is purchased from the open market. With the increased competition from new gas-fired CCPs, fuel oil consumption is expected to be marginal at best and therefore future purchases, if any, will be on a spot basis. Diesel, as backup fuel for oil-fired units, is also purchased on a spot basis.

Repairs and maintenance

Each of our power plants has a timetable for routine maintenance, regular inspections and repairs. Such timetables and the procedures for the repairs and maintenance of generating units comply with the relevant regulations promulgated by the former Ministry of Electricity Power.

Pursuant to our procedures, generating units are currently operating on a cycle of six to eight years, subject to the general maintenance and service conducted considering the status and operating hours of generating units. In each cycle, there are four different levels of maintenance:

(i) regular checks and routine maintenance are carried out throughout the period during which generating unit is in operation;

(ii) a small-scale servicing is performed every year, which takes approximately 20 days;

(iii) a medium-scale check-up is carried out between the two overhauls, the length of which depends on the actual condition of the generating unit at the time of the check-up and the inspections and improvements to be carried out; and

(iv) a full-scale overhaul is conducted at the end of each operating cycle, which takes approximately 60 days.

C. Organizational structure

We are 33.33% owned by HIPDC, which in turn is a subsidiary of Huaneng Group. Huaneng Group was established in 1988 with the approval of the State Council. Huaneng Group also holds a 13.83% equity interest in us in addition to HIPDC’s ownship.  In 2002, Huaneng Group was restructured as one of the five independent power generation group companies to take over the power generation assets originally belonging to the State Power Corporation of China. Huaneng Group has a registered capital of RMB20 billion and is controlled and managed by the central government. Huaneng Group is principally engaged in the development, investment, construction, operation and management of power plants; organizing the generation and sale of power (and heat); and the development, investment, construction, production and sale of products in relation to energy, transportation, new energy and environmental protection industries.

HIPDC was established in 1985 as a joint venture controlled by Huaneng Group. HIPDC is engaged in developing, investing, operating and constructing power plants in China. Some of the power plants currently owned and operated by us were originally built and later transferred to us by HIPDC. Both Huaneng Group and HIPDC have agreed to give us preferential rights in the power development business and power assets transfers. See "Item 7.A. Major shareholders" for details.

The following organizational chart sets forth the organizational structure of HIPDC and us as of March 31, 2018:

36

Notes:

* Huaneng Group indirectly holds 100% equity interests in Pro-Power Investment Limited through its wholly owned subsidiary, China Hua Neng Hong Kong Company Limited, and Pro-Power Investment Limited in turn holds 25% equity interests in HIPDC. As a result, Huaneng Group beneficially holds 100% of equity interests in HIPDC.

** Of the 13.83% equity interest, 10.23% was directly held by Huaneng Group, 3.11% was held by Huaneng Group through its wholly owned subsidiary, China Hua Neng Hong Kong Company Limited, and the remaining approximately 0.49% was held by Huaneng Group through its subsidiary, China Huaneng Finance Corporation Limited.

For a detailed discussion of the Company's subsidiaries, see Note 9 to the Financial Statements.

D. Property, plants and equipment

The following table presents certain summary information on our power plants as of March 31, 2018.

Plant or Expansion	Actual In-service Date	Current Installed Capacity	Ownership	Attributable Capacity	Type of Fuel
(Names as defined below)		(MW)	%	MW
Heilongjiang Province
Xinhua Power Plant	Unit I: Sep. 1979	1 x 200	70%	140	Coal
	Unit II: Sep. 2005	1 x 330	70%	231
Hegang Power Plant	Unit I: Nov. 1998	1x 300	64%	192	Coal
	Unit II: Nov. 1999	1x 300	64%	192
	Unit III: Apr. 2007	1 x 600	64%	384

37

Plant or Expansion	Actual In-service Date	Current Installed Capacity	Ownership	Attributable Capacity	Type of Fuel
(Names as defined below)		(MW)	%	MW
Daqing Co-generation	Unit I: Jun. 2013	1 x 350	100%	350	Coal
	Unit II: Aug. 2013	1 x 350	100%	350
Yichun Co-generation	Unit I: Sep. 2015	1 x 350	100%	350	Coal
	Unit II: Dec. 2015	1 x 350	100%	350
Sanjiangkou Wind Power	66 turbines: Feb. 2010	99	82.85%	82	Wind
Linjiang Jiangsheng Wind Power	66 turbines: Oct. 2015	99	82.85%	82	Wind
Daqing Heping Aobao Wind Power	32 turbines: Dec. 2011	96	100%	96	Wind
	32 turbines: May. 2012	96	100%	96
	16 turbines: Dec. 2016	48	100%	48
	16 turbines: Dec. 2016	48	100%	48
Zhaodong Dechang Photovoltaic	Dec. 2017	20	100%	20	Solar
Jilin Province
Jiutai Power Plant	Unit I: Oct. 2009	1 x 670	100%	670	Coal
	Unit II: Dec. 2009	1 x 670	100%	670
Changchun Co-generation	Unit I: Dec. 2009	1 x 350	100%	350	Coal
	Unit II: Apr. 2009	1 x 350	100%	350
Nongan Biomass	Dec. 2011	1 x 25	100%	25	Biomass
Linjiang Jubao Hydropower	Sep. 2004	2 x 10	100%	20	Solar
Zhenlai Wind Power	33 turbines: Jun. 2009	49.5	100%	49.5	Wind
	33 turbines: Dec. 2011	49.5	100%	49.5
Siping Wind Power	50 turbines: Oct. 2010	75	100%	75	Wind
	25 turbines: Nov. 2010	50	100%	50
	50 turbines: Dec. 2010	75	100%	75
Tongyu Tuanjie Wind Power	74 turbines: Dec. 2015	148	100%	148	Wind
Linjiang Jubao Photovoltaic	Jun. 2017	15	100%	15	Solar
Liaoning Province
Dalian Power Plant Phase I	Unit I: Sep. 1988	2 x 350	100%	700	Coal
	Unit II: Dec. 1988
Phase II	Unit III: Jan. 1999	2 x 350	100%	700	Coal
	Unit IV: Jan. 1999
Dandong Power Plant	Unit I: Jan. 1999	2 x 350	100%	700	Coal
	Unit II: Jan. 1999
Yingkou Power Plant Phase I	Unit I: Jan. 1996	2 x 320	100%	640	Coal
	Unit II: Dec. 1996
Phase II	Unit III: Aug. 2007	2 x 600	100%	1,200	Coal
	Unit IV: Oct. 2007
Yingkou Co-generation	Unit I: Dec. 2009	2 x 330	100%	660	Coal
	Unit II: Dec. 2009
Wafangdian Wind Power	24 turbines: Jun. 2011	48	100%	48	Wind
Changtu Wind Power	33 turbines: Nov. 2012	97.5	100%	97.5	Wind
	24 turbines: Oct. 2014
Suzihe Hydropower	2012	3 x 12.5	100%	37.5	Hydro
Dandong Photovoltaic	May. 2016	10	100%	10	Solar
Yingkou Co-generation Photovoltaic	Jun. 2016	10	100%	10	Solar
Xianrendao Co-generation	Mar. 2017	1 x 50	100%	50	Coal
Yingkou Xianrendao Co-generation Power	Mar. 2017	2*50	100%	100	Coal
Jianchang Bashihan Photovoltaic Phase I	Aug. 2017	22.03	100%	22.03	Solar
Phase II	Aug. 2017	22.03	100%	22.03	Solar
Xiao Deyingzi Photovoltaic	Aug. 2017	15.56	100%	15.56	Solar
Chaoyang Heiniuyingzi Photovoltaic	Aug. 2017	18.79	100%	18.79	Solar
Inner Mongolia
Autonomous Region
Huade Wind Power Phase I	33 turbines: Dec. 2009	49.5	100%	49.5	Wind
Phase II	33 turbines: Jun. 2011	49.5	100%	49.5	Wind

38

Plant or Expansion	Actual In-service Date	Current Installed Capacity	Ownership	Attributable Capacity	Type of Fuel
(Names as defined below)		(MW)	%	MW
Hebei Province
Shang' an Power Plant Phase I	Unit I: Aug. 1990	2 x 350	100%	700	Coal
	Unit II: Dec. 1990
Phase II	Unit III: Oct. 1997	2 x 330	100%	660	Coal
	Unit IV: Oct. 1997
Phase III	Unit V: Jul. 2008	2 x 600	100%	1,200	Coal
	Unit VI: Aug. 2008
Kangbao Wind Power Phase I	33 turbines: Jan. 2011	49.5	100%	49.5	Wind
Kangbao Xitan Photovoltaic	Jun. 2016	20	100%	20	Solar
Zhuolu Dabao Wind Power	24 turbines: Mar. 2017	48	100%	48	Wind
Shang'an Dinghanhuichang Photovoltaic	Dec. 2017	17	100%	17	Solar
Gansu Province
Pingliang Power Plant Phase I	Unit I: Sep. 2000	3 x 325	65%	633.75	Coal
	Unit II: Jun. 2001
	Unit III: Jun. 2003
	Unit IV: Nov. 2003	1 x 330	65%	214.5	Coal
	Unit V: Feb. 2010	2 x 600	65%	780	Coal
	Unit VI: March 2010
Pingliang Power Plant Phase I	Unit VI: Dec. 2011	2 x 306.9	41%	251.66	Gas
CCGT	Unit VII: Dec. 2011
	Unit VIII: Dec. 2011	1 x 309.6	41%	126.936	Gas
	Unit IX: Nov. 2017	2 x 342.97	41%	281.24	Gas
CCGT	Unit X: Nov. 2017
	Unit XI: Nov. 2017	1 x 312.06	41%	127.94	Gas
Jiuquan Wind Power	259 turbines: Dec. 2011	401	100%	401	Wind
Jiuquan II Wind Power	100 turbines: Dec. 2014	200	100%	200	Wind
	100 turbines: Jun. 2015	200	100%	200	Wind
Yumen Wind Power	24 turbines: Jun. 2015	48	100%	48	Wind
	67 turbines: Jun. 2015	100.5	100%	100.5	Wind
Yigang Wind Power	96 turbines: Dec. 2015	192	100%	192	Wind
Ningxia Autonomous Region
Ruyi Helan Rooftop Photovoltaic	Jun. 2017	19.8	40%	7.92	Solar
Beijing Municipality
Beijing Co-generation Phase I	Unit I: Jan. 1998	2 x 165	41%	135.3	Coal
	Unit II: Jan. 1998
	Unit III: Dec. 1998	2 x 220	41%	180.4	Coal
	Unit IV: Jun. 1999
	Unit V: Apr. 2004	1 x 75	41%	30.75	Coal
Beijing Co-generation CCGT Phase II	Unit VI: Dec. 2011	2 x 306.9	41%	251.66	Gas
	Unit VII: Dec. 2011
	Unit VIII: Dec. 2011	1 x 309.6	41%	126.936	Gas
Beijing Co-generation CCGT Phase III	Unit IX: Nov. 2017	2 x 342.97	41%	281.24	Gas
	Unit X: Nov. 2017
	Unit XI: Nov. 2017	1 x 312.6	41%	127.94	Gas
Tianjin Municipality
Yangliuqing Co-generation	Unit I: Dec. 1998	4 x 300	55%	660	Coal
	Unit II: Sep. 1999
	Unit III: Dec. 2006
	Unit IV: May 2007
Lingang Co-generation CCGT	Unit I: Dec. 2014	1 x 313	100%	463	Gas
		1 x 150
Chenxi Photovoltaic	Jun. 2017	2.2	55%	1.21	Solar
Shanxi Province
Yushe Power Plant Phase I	Unit I: Aug. 1994	2 x 100	60%	120	Coal
	Unit III: Dec. 1994
Phase II	Unit IV: Oct. 2004	2 x 300	60%	360	Coal
	Unit II: Nov. 2004

39

Plant or Expansion	Actual In-service Date	Current Installed Capacity	Ownership	Attributable Capacity	Type of Fuel
(Names as defined below)		(MW)	%	MW
Zuoquan Power Plant	Unit I: Dec. 2011	2 x 673	80%	1,076.8	Coal
	Unit II: Jan. 2012
Dongshan CCGT	Unit I: Oct. 2015	2 x297.7	100%	595.4	Gas
	Unit II: Oct. 2015
	Unit III: Oct. 2015	263.6	100%	263.6	Gas
Yushe Photovoltaic	Jun. 2017	50	100%	50	Solar
Shandong Province
Dezhou Power Plant Phase I	Unit I: 1992	1 x 330	100%	330	Coal
	Unit II: 1992	1 x 320	100%	320	Coal
Phase II	Unit III: Jun. 1994	1 x 330	100%	330	Coal
	Unit IV: May 1995	1 x 320	100%	320	Coal
Phase III	Unit V: Jun. 2002	2 x 700	100%	1,400	Coal
	Unit VI: Oct. 2002
Jining Power Plant  Coal-fired	Unit V: Jul. 2003	2 x 135	100%	270	Coal
	Unit VI: Aug. 2003
Co-generation	Unit I: Nov. 2009	2 x 350	100%	700	Coal
	Unit II: Dec. 2009
Xindian Power Plant Phase III	Unit V: Sep 2006	2 x 300	95%	570	Coal
	Unit VI: Nov. 2006
Weihai Power Plant Phase II	Unit III: Mar. 1998	2 x 320	60%	384	Coal
	Unit IV: Nov. 1998
Phase III	Unit V: Dec. 2012	2 x 680	60%	816	Coal
	Unit VI: Dec. 2012
Rizhao Power Plant Phase II	Dec. 2008	2 x 680	100%	1,360	Coal
Zhanhua Co-generation	Jul. 2005	2 x 165	100%	330	Coal
Baiyanghe Power Plant	Unit I: Oct. 2003	1 x 145	80%	116	Coal
	Unit II: Oct. 2003	1 x 145	80%	116
	Unit III: Dec. 2009	1 x 300	80%	240
	Unit IV: Dec. 2009	1 x 300	80%	240
Rizhao Power Plant Phase I	Unit I: Sep. 1999	1 x 350	88.8%	311	Coal
	Unit II: Jan. 2003	1 x 350	88.8%	311
Jiaxiang Power Plant	Unit I: Oct. 2006	1 x 330	40%	132	Coal
	Unit II: May. 2007	1 x 330	40%	132
Jining Co-generation	Unit I: Apr. 2004	1 x 30	40%	12	Coal
	Unit II: Jul. 2004	1 x 30	40%	12
Qufu Co-generation	Unit I: Feb. 2009	1 x 225	40%	90	Coal
	Unit II: Sep. 2009	1 x 225	40%	90
Huangtai Power Plant	Unit I: Nov. 1987	1 x 330	72%	237.6	Coal
	Unit II: Jan. 2011	1 x 350	72%	252
	Unit III: Jan. 2011	1 x 350	72%	252
Yantai Power Plant	Unit I: Apr. 1996	1 x 110	80%	88	Coal
	Unit II: Oct. 2005	1 x 160	80%	128
	Unit III: Dec. 2005	1 x 160	80%	128
	Unit IV: Oct. 2006	1 x 160	80%	128
Linyi Power Plant	Unit I: Dec. 2012	1 x 350	60%	210	Coal
	Unit II: Oct. 2013	1 x 350	60%	210
	Unit III: Dec. 1997	1 x 140	60%	84
	Unit IV: Apr. 2003	1 x 140	60%	84
	Unit V: Sep. 2003	1 x 140	60%	84
	Unit VI: Apr. 2005	1 x 140	60%	84
Jining Yunhe Power Plant	Unit I: Jul. 2000	1 x 145	78.68%	114.09	Coal
	Unit II: Nov. 2000	1 x 145	78.68%	114.09
	Unit III: Sep. 2003	1 x 145	78.68%	114.09

40

Plant or Expansion	Actual In-service Date	Current Installed Capacity	Ownership	Attributable Capacity	Type of Fuel
(Names as defined below)		(MW)	%	MW
	Unit IV: Feb. 2004	1 x 145	78.68%	114.09
	Unit V: Sep. 2006	1 x 330	78.68%	259.64
	Unit VI: Mar. 2006	1 x 330	78.68%	259.64
Liaocheng Co-generation	Unit I: Jan. 2006	1 x 330	60%	198	Coal
	Unit II: Sep. 2006	1 x 330	60%	198
Taian Power Plant	Unit I: May. 2007	1 x 150	80%	120	Coal
	Unit II: Dec. 2007	1 x 150	80%	120
Laiwu Power Plant	Unit I: Dec. 2015	1 x 1000	64%	640	Coal
	Unit II: Nov. 2016	1 x 1000	64%	640
Muping Wind Power	28 turbines: Dec. 2010	42	80%	34	Wind
Penglai Wind Power	24 turbines: Sep. 2014	48	80%	38.4	Wind
	1 turbine: Sep. 2014	1.8	80%	1.44
	24 turbines: Oct. 2016	48	80%	38.4
	1 turbine: Oct. 2016	1.8	80%	1.44
Rushan Wind Power	8 turbines: Sep. 2014	12	80%	9.6	Wind
	11 turbines: Sep. 2014	16.5	80%	13.2
	2 turbines: Oct. 2016	3	80%	2.4
	5 turbines: Oct. 2016	10.5	80%	8.4
Changdao Wind Power	8 turbines: Sep. 1999	4.8	48%	10	Wind
	6 turbines: Dec. 2004	3.6	48%	1.73
	3 turbines: Jul. 2005	2.25	48%	1.08
	1 turbine: Apr. 2006	1.3	48%	0.62
	3 turbines: Apr. 2006	2.25	48%	1.08
	2 turbines: Sep. 2006	2.6	48%	1.25
	1 turbine: Sep. 2006	0.75	48%	0.36
	2 turbines: Jan. 2007	1.5	48%	0.72
	2 turbines: Oct. 2008	1.5	48%	0.72
Rongcheng Wind Power	1 turbine: Jan. 2006	1.5	48%	0.72	Wind
	1 turbine: Jan. 2006	1.5	48%	0.72
	1 turbine: Jan. 2006	1.5	48%	0.72
	2 turbines: Feb. 2006	3	48%	1.44
	2 turbines: Feb. 2006	3	48%	1.44
	3 turbines: Mar. 2006	4.5	48%	2.16
Dongying Wind Power	32 turbines: Dec. 2009	48	56%	27	Wind
Boshan Photovoltaic	May. 2016	12	80%	10	Solar
Sishui Photovoltaic	Jun. 2015	20	80%	16	Solar
Gaozhuang Photovoltaic	May. 2016	20	80%	16	Solar
Jining Co-generation Photovoltaic		20	80%	16	Solar
Zhanhua Qingfenghu Wind Power	50 turbines: Dec. 2017	100	80%	80	Wind
Jining Photovoltaic	Feb. 2017	20	80%	16	Solar
Laiwu Niuquan Photovoltaic	Apr. 2017	20	80%	16	Solar
Furuite Rooftop Photovoltaic	Jun. 2017	6.3	76%	4.79	Solar
Zhanhua Qingfenghu Photovoltaic	Jun. 2017	100	46%	46	Solar
Weihai Haibu Photovoltaic	Jun. 2017	19.75	80%	15.8	Solar
Jining Weishan Zhaozhuang Photovoltaic	Dec. 2017	80	80%	64	Solar
Henan Province
Qinbei Power Plant  Phase I	Unit I: Nov. 2004	2 x 600	60%	720	Coal
	Unit II: Dec. 2004
Phase II	Unit III: Nov. 2007	2 x 600	60%	720	Coal
	Unit IV: Nov. 2007
Phase III	Unit V: Mar. 2012	2 x 1000	60%	1,200	Coal
	Unit VI: Feb. 2013
Zhongyuan CCGT	Unit I: Aug. 2007	2 x 390	90%	702	Coal
	Unit II: Jan. 2008
Luoyang Co-generation Power Plant	Unit I: May. 2015	2 x 350	80%	560	Coal
	Unit II: Jun. 2015

41

Plant or Expansion	Actual In-service Date	Current Installed Capacity	Ownership	Attributable Capacity	Type of Fuel
(Names as defined below)		(MW)	%	MW
Luoyang Yangguang Power Plant	Unit I: Jun. 2006	2 x 135	80%	216	Coal
	Unit II: Oct. 2006
Mianchi Co-generation	Unit I: Dec. 2016	2 x 350	60%	420	Coal
	Unit II: Dec. 2016
Zhumadian Wind Power	16 turbines: Dec 2016	32	90%	28.8	Wind
Qinbei Dianchanghuichang Photovoltaic	Jun. 2017	20	60%	12	Solar
Jiangsu Province
Nantong Power Plant Phase I	Unit I: Sep. 1989	2 x 352	100%	704	Coal
	Unit II: Mar. 1990
Phase II	Unit III: Jul. 1999	2 x 350	100%	700	Coal
	Unit IV: Oct. 1999
Nanjing Power Plant	Unit I: Mar. 1994	2 x 320	100%	640	Coal
	Unit II: Oct. 1994
Taicang Power Plant Phase I	Unit I: Dec. 1999	2 x 320	75%	480	Coal
	Unit II: Apr. 2000
Phase II	Unit III: Jan. 2006	2 x 630	75%	945	Coal
	Unit IV: Feb. 2006
Huaiyin Power Plant Phase II	Unit III: Jan. 2005	2 x 330	63.64%	420	Coal
	Unit IV: Mar. 2005
Phase III	Unit V: May 2006	2 x 330	63.64%	420	Coal
	Unit VI: Sep. 2006
Jinling Power Plant CCGT	Unit I: Dec. 2006	2 x 390	60%	468	Gas
	Unit II: Mar. 2007
CCGT	Unit I: April 2013	2 x 126.7	51%	195.1	Gas
Cogeneration	Unit II: May 2013	2 x 64.6
Jinling Coal-Fired	Unit III: Dec. 2009	2 x 1,030	60%	1,236	Coal
	Unit IV: Aug. 2012
Suzhou Co-generation	Unit I: Aug. 2006	2 x 60	53.45%	64.14	Coal
	Unit II: Oct. 2006
Nanjing Chemical Industry Park Co-generation	Unit I: Apr. 2016	50	70%	35	Coal
	Unit II: Dec. 2016	50	70%	35
Qidong Wind Power Phase I	61 turbines: Mar. 2009	91.5	65%	59.5	Wind
Phase II	25 turbines: Jan. 2011	50	65%	32.5	Wind
	22 turbines: Jun. 2012	44	65%	28.6	Wind
Rudong Wind Power	24 turbines: Nov. 2013	48	90%	43.2	Wind
Tongshan Wind Power Phase I	25 turbines: Mar. 2016	50	70%	35	Wind
Phase II	24 turbines: Dec. 2017	48	70%	33.6	Wind
Luhe Wind Power	25 turbines: Dec. 2016	50	100%	50	Wind
Rudong Offshore Wind Power	26 turbines: Mar, 2017	106.4	70%	211.68	Wind
	44 turbines: Sep. 2017	196
Guanyun Power	Unit I: Dec. 2017	2 x 25	100%	50	Coal
	Unit II: Dec. 2017
Suzhou CCGT	Unit I: Jul. 2017	178	100%	452	Gas
	Unit II: Jul. 2017	48
	Unit III: Sep. 2017	178
	Unit IV: Sep. 2017	48
Yicheng Wind Power Phase I	21 turbines: Dec. 2017	46.2	100%	46.2	Wind
Taicang Dianchanghuichang Photovoltaic	Apr. 2017	40	75%	30	Solar
Guanyun Photovoltaic	Jun. 2017	14.1	100%	14.1	Solar
Shanghai Municipality
Shidongkou I	Unit I: Feb. 1988	4 x 325	100%	1,300	Coal
	Unit II: Dec. 1988
	Unit III: Sep. 1989
	Unit IV: May 1990

42

Plant or Expansion	Actual In-service Date	Current Installed Capacity	Ownership	Attributable Capacity	Type of Fuel
(Names as defined below)		(MW)	%	MW
Shidongkou II	Unit I: Jun. 1992	2 x 600	100%	1,200	Coal
	Unit II: Dec. 1992
Shidongkou Power	Unit I: Oct. 2011	2 x 660	50%	660	Coal
	Unit II: Oct. 2011
Shanghai CCGT	Unit I: May 2006	3 x 390	70%	819	Gas
	Unit II: Jun. 2006
	Unit III: Jul. 2006
Chongqing Municipality
Luohuang Power Plant Phase I	Unit I: Sep. 1991	2 x 360	60%	432	Coal
	Unit II: Feb. 1992
Phase II	Unit III: Dec. 1998	2 x 360	60%	432	Coal
	Unit IV: Dec. 1998
Phase III	Unit V: Dec. 2006	2 x 600	60%	720	Coal
	Unit VI: Jan. 2007
Liangjiang CCGT	Unit I: Oct. 2014	2 x 467	90%	840.6	Gas
	Unit II: Dec. 2014
Zhejiang Province
Changxing Power Plant	Unit I: Dec. 2014	2 x 660	100%	1320	Coal
	Unit II: Dec. 2014
Yuhuan Power Plant Phase I	Unit I: Nov. 2006	2 x 1,000	100%	2,000	Coal
	Unit II: Dec. 2006
Phase II	Unit III: Nov. 2007	2 x 1,000	100%	2,000	Coal
	Unit IV: Nov. 2007
Tongxiang CCGT	Unit I: Sep. 2014	1 x 258.4	95%	245.48	Gas
	Unit II: Sep. 2014	1 x 200	95%	190	Gas
Changxing Photovoltaic	Dec. 2014	5	100%	5	Solar
	Mar. 2015	5	100%	5	Solar
Changxing Hongqiao Photovoltaic	Sep. 2016	30	100%	30	Solar
Huzhou Distributed Photovoltaic	Jun. 2017	16.13	100%	20	Solar
	Dec. 2017	3.87
Hunan Province
Yueyang Power Plant Phase I	Unit I: Sep. 1991	2 x 362.5	55%	398.75	Coal
	Unit II: Dec. 1991
Phase II	Unit III: Mar. 2006	2 x 300	55%	330	Coal
	Unit IV: May 2006
Phase III	Unit V: Jan. 2011	2 x 600	55%	660	Coal
	Unit VI: Aug. 2012
Xiangqi Hydropower	Unit I: Dec. 2011	4 x 20	100%	80	Hydro
	Unit II: May 2012
	Unit III: Jul. 2012
	Unit IV: Aug. 2012
Subaoding Wind Power	40 turbines: Dec. 2014	80	100%	80	Wind
	35 turbines: May. 2015	70	100%	70	Wind
Guidong Wind Power	42 turbines: Aug. 2015	48	100%	48	Wind
	18 turbines: Sep. 2015	36	100%	36	Wind
Yueyang Xingang Photovoltaic	May. 2017	10	60%	6	Solar
Yueyang Leigutai Photovoltaic	Jun. 2017	20	55%	11	Solar
Hubei Province
Enshi  Maweigou Hydropower	Dec. 2011	3 x 5	100%	15	Hydro
	Dec. 2015	2 x 20	100%	40	Hydro
Dalongtan Hydropower	Unit I: May 2006	3 x 12	97%	34.92	Hydro
	Unit II: Aug. 2005	1 x 1.6	97%	1.55	Hydro
	Unit III: Mar. 2006

43

Plant or Expansion	Actual In-service Date	Current Installed Capacity	Ownership	Attributable Capacity	Type of Fuel
(Names as defined below)		(MW)	%	MW
Wuhan Power Plant Phase I	Unit I: Jun. 1993	2 x 300	75%	450	Coal
	Unit II: Jan. 1994
Phase II	Unit III: May 1997	2 x 330	75%	495	Coal
	Unite IV: Dec. 1997
Phase III	Unit V: Oct. 2006	2 x 600	75%	900	Coal
	Unit VI: Dec. 2006
Jingmen Co-generation	Unit I: Nov. 2014	2 x 350	100%	700	Coal
	Unit II: Oct. 2014
Yingcheng Co-generation	Unit II: Jan. 2015	1 x 350	100%	350	Coal
	Unit I: Jun. 2016	1 x 50	100%	50	Coal
Jieshan Wind Power Phase I	24 turbines: Jun. 2015	48	100%	48	Wind
Phase II	36 turbines: Aug. 2016	72	100%	72	Wind
Zhongxiang Hujiawan Wind Power	12 turbines: Dec. 2017	24	100%	24	Wind
Suizhou Zengdufuhe Photovoltaic	Sep. 2017	16.7	100%	20	Solar
	Oct. 2017	3.3
Jiangxi Province
Jinggangshan Power Plant Phase I	Unit I: Dec. 2000	2 x 300	100%	600	Coal
	Unit II: Aug. 2001
Phase II	Unit III: Nov. 2009	2 x 660	100%	1,320	Coal
	Unit IV: Dec. 2009
Jianggongling Wind Power	24 turbines: Dec. 2014	48	100%	48	Wind
Ruijin Power Plant	Unit I: May 2008	2 x 350	100%	700	Coal
	Unit II: Aug. 2008
Anyuan Power Plant	Unit I: Jun. 2015	2 x 660	100%	1,320	Coal
	Unit II: Aug. 2015
Hushazui Wind Power	13 turbines: Dec. 2016	26	100%	26	Wind
Linghuashan Wind Power	26 turbines: Jun. 2017	52	100%	100	Wind
	24 Turbines: Sep.2017	48
Anhui Province
Chaohu Power Plant	Unit I:  May 2008	2 x 600	60%	720	Coal
	Unit II:  Aug. 2008
Hualiangting Hydropower Phase I	Unit I: Oct. 1981	2 x 10	100%	20	Hydro
	Unit II: Nov. 1981
Phase II	Unit III: Nov. 1987	2 x 10	100%	20	Hydro
	Unit IV: Nov. 1987
Huaining Wind Power	25 turbines: Jun. 2016	50	100%	50	Wind
	45 turbines: Dec. 2017	99	100%	99	Wind
Fujian Province
Fuzhou Power Plant Phase I	Unit I: Sep. 1988	2 x 350	100%	700	Coal
	Unit II: Dec. 1988
Phase II	Unit III: Oct. 1999	2 x 350	100%	700	Coal
	Unit IV: Oct. 1999
Phase III	Unit V: Jul. 2010	2 x 660	100%	660	Coal
Changle Photovoltaic	Jun. 2017	10	100%	10	Solar
Guangdong Province
Shantou Power Plant Phase I	Unit VI: Oct. 2011	2 x 300	100%	600	Coal
	Unit I: Jan. 1997
	Unit II: Jan. 1997
Phase II	Unit III: Oct. 2005	1 x 600	100%	600	Coal
Haimen	Unit I: Jul. 2009	2 x 1,036	100%	2,072	Coal
	Unit II: Oct. 2009
Haimen Power	Unit I: Mar. 2013	2 x 1,036	80%	1,657.6	Coal
	Unit II: Mar. 2013
Shantou Photovoltaic	Sep. 2016	17	100%	17	Solar
Yunnan Province
Diandong Energy Phase I	Unit I: Feb. 2006	2 x 600	100%	1,200	Coal
	Unit II: Jul. 2006

44

Plant or Expansion	Actual In-service Date	Current Installed Capacity	Ownership	Attributable Capacity	Type of Fuel
(Names as defined below)		(MW)	%	MW
Phase II	Unit III: Nov. 2006	2 x 600	100%	1,200	Coal
	Unit IV: May 2007
Yuwang Energy Phase I	Unit I: Jul. 2009	2 x 600	100%	1,200	Coal
	Unit II: Feb. 2010
Fuyuan Wind Power	20 turbines: Dec. 2014	40	100%	40	Wind
	24 turbines: Dec. 2014	48	100%	48	Wind
	20 turbines: Jun. 2016	48	100%	48	Wind
	12 turbines: Oct. 2017	18	100%	48	Wind
	11 turbines: Oct. 2017	27.5
	1 turbines: Nov. 2017	2.5
Hainan Province
Haikou Power Plant	Unit IV: May 2000	2 x 138	91.8%	253.368	Coal
	Unit V: May 1999
	Unit VIII: Apr. 2006	2 x 330	91.8%	605.88	Coal
	Unit IX: May 2007
Dongfang Power Plant Phase I	Unit I: Jun. 2009	2 x 350	91.8%	642.6	Coal
	Unit II: Dec. 2009
Phase II	Unit III: May 2012	2 x 350	91.8%	642.6	Coal
	Unit IV: Dec. 2012
Nanshan Co-generation	Unit I: Apr. 1995	2 x 50	91.8%	91.8	Gas
	Unit II: Apr. 1995
	Unit III: Oct. 2003	2 x 16	91.8%	29.370	Gas
	Unit IV: Oct. 2003
Gezhen Hydropower	Unit I: Nov. 2009	2 x 40	91.8%	73.40	Hydro
	Unit II: Nov. 2009
	Unit III: Dec. 2009	2 x 1	91.8%	1.836	Hydro
	Unit IV: Dec. 2009
Wenchang Wind Power	34 turbines: Jan. 2009	51.5	91.8%	47.277	Wind
Dongfang Photovoltaic	Jul. 2016	12	91.8%	11.016	Solar
Chengmai Photovoltaic	Jun. 2017	12.5	91.8%	22.95	Solar
	Sep. 2017	12.5
Guizhou Province
Panxian Wind Power	12 turbines: Dec. 2015	24	100%	24	Wind
Panxian Dapashan Wind Power	9 turbines: Nov. 2017	18	100%	24	Wind
	3 turbines: Dec. 2017	6
Panxian Jiaoziding Wind Power	16 turbines: Nov. 2017	32	100%	48	Wind
	8 turbines: Dec. 2017	16
Guangxi Autonomous Region
Guilin Distributed Energy	Unit I: Dec. 2017	3 x 70	100%	210	Gas
	Unit II: Dec. 2017
	Unit III: Dec. 2017
Singapore	Unit I: Mar. 1999	1 x 600	100%	600	Oil
Tuas Power	Unit III: Nov. 2001	4 x 367.5	100%	1,470	Gas
	Unit IV: Jan. 2002
	Unit V: Feb. 2005
	Unit VI: Sep. 2005
	Unit VII: Dec. 2013	405.9	100%	405.9	Gas
TMUC  Phase I	Feb. 2013	1 x 101	100%	101	Coal & biomass
Phase IIA	Jun. 2014	1 x 32.5	100%	32.5	Coal & biomass

The following table presents the availability factors and the capacity factors of our coal-fired operating power plants in China for the years ended December 31, 2015, 2016 and 2017.

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Coal-fired Power Plant	Availability factor (%)						Capacity factor (%)
	2015		2016		2017		2015		2016		2017
Heilongjiang Province								-		-
Xinhua Power Plant		-		-		99.83		-		-		54.41
Hegang Power Plant		-		-		94.18		-		-		42.01
Daqing Co-generation		-		-		92.85		-		-		49.9
Yichun Co-generation		-		-		94.08		-		-		43.15
Jilin Province
Jiutai Power Plant		-		-		99.89		-		-		43.63
Changchun Co-generation		-		-		92.98		-		-		49.09
Liaoning Province
Dalian		92.95		99.86		99.94		49.04		49.91		50.69
Dandong		93.34		97.4		100		49.74		47.49		46.08
Yingkou		100		100		95.35		48.86		48.70		47.77
Yingkou Co-generation		100		100		92.36		53.35		43.55		51.81
Hebei Province
Shang’an		95.50		93.18		91.72		66.74		57.50		58.56
Gansu Province
Pingliang		88.83		96.3		95.74		27.76		39.77		40.34
Beijing Municipality
Beijing Cogeneration		85.60		92.79		98.28		53.01		45.89		18.09
Tianjin Municipality
Yangliuqing		95.02		96.78		93.39		54.02		53.38		53.82
Shanxi Province
Yushe		93.18		94.77		93.97		53.32		53.01		43.76
Zuoquan		90.93		87.61		81		47.71		46.68		40.16
Shandong Province
Dezhou		97.01		93.96		96.59		60.83		57.97		55.1
Jining		92.03		91.35		96.1		57.58		59.22		59.88
Weihai		97.04		93.47		94.71		64.03		65.83		59.7
Xindian		89.12		90.10		94.73		60.08		63.07		69.97
Rizhao Power		94.80		90.12		94.87		66.91		62.89		64.60
Rizhao II		92.22		94.08		93.97		66.91		66.34		60.48
Zhanhua Co-generation		94.33		97.32		92.1		51.98		55.27		43.84
Laiwu Power Plant		-		-		97.41		-		-		60.7
Baiyanghe Power Plant		-		-		93.71		-		-		59.63
Huangtai Power Plant		-		-		96.41		-		-		59.17
Yantai Power Plant		-		-		97.58		-		-		44.14
Liaocheng Co-generation		-		-		94.05		-		-		50.01
Linyi Power Plant		-		-		95.78		-		-		54.44
Jining Yunhe Power Plant		-		-		96.68		-		-		60.99
Qufu Co-generation		-		-		94.43		-		-		60.19
Jiaxiang Power Plant		-		-		94.29		-		-		59.74
Jining Co-generation		-		-		91.48		-		-		71.87
Taian Power Plant		-		-		93.83		-		-		31.46
Henan Province
Qinbei		97.18		96.69		88.99		46.22		55.06		39.29
Luoyang Cogeneration Power Plant		-		92.71		97.26		-		46.20		41.37
Luoyang Yangguang Power Plant		-		100		97.62		-		67.70		24.91
Mianchi Co-generation		-		100		100		-		59.04		40.3
Jiangsu Province
Nantong		91.41		91.37		92.78		50.15		52.99		49.91
Nanjing		93.54		96.92		92.89		47.59		57.24		49.15
Taicang		94.39		99.84		98.9		60.57		71.16		68.49
Huaiyin		91.40		89.66		93.76		50.28		48.04		43.51

46

Coal-fired Power Plant	Availability factor (%)						Capacity factor (%)
	2015		2016		2017		2015		2016		2017
Jinling Coal-fired		89.82		93.85		88.3		64.99		70.19		60.92
Suzhou Co-generation		98.42		96.41		94.77		75.10		74.35		73.37
Shanghai Municipality
Shidongkou I		95.43		99.86		90.97		44.44		43.53		46.51
Shidongkou II		92.57		92.81		93.77		51.15		55.07		54.74
Zhejiang Province
Changxing		97.69		96.5		97.21		47.03		49.18		56.72
Yuhuan		95.53		93.64		94.61		55.43		55.58		58.6
Chongqing Municipality
Luohuang		94.44		95.58		87.25		42.23		35.16		34.13
Hunan Province
Yueyang		98.94		99.71		98.24		35.04		33.56		42.63
Hubei Province
Wuhan Power		95.36		94.54		96.8		46.53		46.84		46.06
Jingmen Thermal Power		98.09		97.86		98.05		26.80		41.39		43.53
Yingcheng Thermal Power		100		90.80		99.97		33.52		44.30		52.56
Jiangxi Province
Jinggangshan		92.92		92.19		94.73		53.47		49.55		58.65
Ruijin Power		-		92.43		91.28		-		49.77		56.82
Pingxiang		-		88.6		83.62		-		55.29		60.24
Anhui Province
Chaohu Power		95.50		86.29		99.66		55.62		56.42		54.04
Fujian Province
Fuzhou		91.62		99.98		95.46		45.72		36.05		47.26
Guangdong Province
Shantou		98.42		97.91		94.32		43.29		43.39		49.98
Haimen		96.53		94.41		93.93		45.98		38.88		54.66
Yunnan Province
Diandong		98.68		98.82		98.34		19.00		15.73		15.29
Yuwang		96.79		100		99.59		15.07		2.54		0.54
Hainan Province
Haikou		96.02		91.15		95.4		87.47		60.46		57.21
Dongfang		92.73		94.33		99.53		74.05		60.23		64.6

___________________

The details of our operating power plants, construction projects and related projects as of March 31, 2017 are described below.

Power Plants in Heilongjiang Province

Xinhua Power Plant

Huaneng Xinhua Power Plant ("Xinhua Power Plant") is located in the city of Daqing in Heilongjiang Province. Xinhua Power Plant, including Phase I and Phase II, has an installed capacity of 530 MW and consists of one 200 MW coal-fired generating unit and one 330 MW coal-fired generating unit and which commenced operations in 1979 and 2005 respectively. We hold 70% equity interest in Xinhua Power Plant.

The coal supply for Xinhua Power Plant is mainly obtained from Inner Mongolia Autonomous Region. Xinhua Power Plant typically stores 120,000 tons of coal on site. Xinhua Power Plant obtained 80.8% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Xinhua Power Plant in 2017 was RMB326.06 (2016: RMB269.07) per ton.

Xinhua Power Plant sells its electricity to Heilongjiang Electric Power Company.

47

Hegang Power Plant

Huaneng Hegang Power Plant ("Hegang Power Plant") is located in the city of Hegang in Heilongjiang Province. Hegang Power Plant, including Phases I to III, has an installed capacity of 1,200 MW and consists of two 300 MW coal-fired generating unit and one 600 MW coal-fired generating unit and which commenced operations in 1998, 1999 and 2007 respectively. We hold 64% equity interest in Xinhua Power Plant.

The coal supply for Hegang Power Plant is mainly obtained from the city of Hegang. Hegang Power Plant typically stores 120,000 tons of coal on site. Hegang Power Plant obtained 68.7% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Hegang Power Plant in 2017 was RMB406.37 (2016: RMB317.73) per ton.

Hegang Power Plant sells its electricity to Heilongjiang Electric Power Company.

Daqing Co-generation

Huaneng Daqing Co-generation Power Plant ("Daqing Co-generation") is located in the city of Daqing in Heilongjiang Province. Daqing Co-generation, including Phase I and Phase II, has an installed capacity of 700 MW and consists of two 350 MW coal-fired generating units which commenced operations in 2003. We hold 100% equity interest in Daqing Co-generation.

The coal supply for Daqing Co-generation is mainly obtained from Inner Mongolia Autonomous Region. Daqing Co-generation typically stores 80,000 tons of coal on site. Daqing Co-generation obtained 93.9% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Daqing Co-generation in 2017 was RMB323.56 (2016: RMB263.84) per ton.

Daqing Co-generation sells its electricity to Heilongjiang Electric Power Company.

Yichun Co-generation

Huaneng Yichun Co-generation Power Plant ("Yichun Co-generation") is located in the city of Yichun in Heilongjiang Province. Yichun Co-generation, including Phase I and Phase II, has an installed capacity of 700 MW and consists of two 350 MW coal-fired generating units which commenced operations in 2015. We hold 100% equity interest in Yichun Co-generation.

The coal supply for Yichun Co-generation is mainly obtained from the city of Hegang. Daqing Co-generation typically stores 80,000 tons of coal on site. Yichun Co-generation obtained 79.8% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Yichun Co-generation in 2017 was RMB416.97 (2016: RMB334.03) per ton.

Yichun Co-generation sells its electricity to Heilongjiang Electric Power Company.

Sanjiangkou Wind Power

Huaneng Shanjiangkou Wind Power Plant ("Sanjiangkou Jiangsheng Wind Power") is located in the city of Jiamusi in Heilongjiang Province. The installed capacity of Sanjiangkou Wind Power Plant is 99 MW and consists of 66 turbines. It commenced operation in February 2010. We hold 82.85% equity interest in Sanjiangkou Wind Power Plant.

Sanjiangkou Wind Power sells its electricity to Heilongjiang Electric Power Company.

Linjiang Jiangsheng Wind Power

Linjiang Jiangsheng Wind Power Plant ("Linjiang Jiangsheng Wind Power") is located in the city of Jiamusi in Heilongjiang Province. The installed capacity of Linjiang Jiangsheng Wind Power Plant is 99 MW and

48

consists of 66 turbines. It commenced operation in October 2015. We hold 82.85% equity interest in Linjiang Jiangsheng Wind Power Plant.

Linjiang Jiangsheng Wind Power sells its electricity to Heilongjiang Electric Power Company.

Daqing Heping Aobao Wind Power

Daqing Heping Aobao Wind Power Plant ("Daqing Heping Aobao Wind Power") is located in the city of Jiamusi in Heilongjiang Province. Phase I of the Daqing Heping Aobao Wind Power commenced operation in December 2011, with an installed capacity of 96 MW, consisting of 32 wind power turbines of 3 MW each. Phase II of the Daqing Heping Aobao Wind Power commenced operation in May 2012, with an installed capacity of 96 MW, consisting of 32 wind power turbines of 3 MW each. Phase III of the Daqing Heping Aobao Wind Power commenced operation in December, with an installed capacity of 96 MW, consisting of 32 wind power turbines of 3 MW each. We hold 100% of the equity interest in Daqing Heping Aobao Wind Power.

Daqing Heping Aobao Wind Power sells its electricity to Heilongjiang Electric Power Company.

Zhaodong Dechang Photovoltaic

Zhaodong Dechang 20 MW Photovoltaic Power Plant ("Zhaodong Dechang Photovoltaic") is located in the city of Zhaodong in Heilongjiang Province. Zhaodong Dechang Photovoltaic commenced operation in December 2017, with an installed capacity of 20 MW. We hold 100% of the equity interest in Dandong Photovoltaic.

Zhaodong Dechang Photovoltaic sells its electricity to Heilongjiang Electric Power Company.

Power Plants in Jilin Province

Jiutai Power Plant

Huaneng Jiutai Power Plant ("Jiutai Power Plant") is located in the city of Changchun in Jilin Province. Jiutai Power Plant, including Phase I and Phase II, has an installed capacity of 1,340 MW and consists of two 670 MW coal-fired generating units which commenced operations in 2009. We hold 100% equity interest in Jiutai Power Plant.

The coal supply for Jiutai Power Plant is mainly obtained from Inner Mongolia Autonomous Region. Jiutai Power Plant typically stores 120,000 tons of coal on site. Jiutai Power Plant obtained 75.9% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Jiutai Power Plant in 2017 was RMB371.93 (2016: RMB260.52) per ton.

Jiutai Power Plant sells its electricity to Jilin Electric Power Company.

Changchun Co-generation

Huaneng Changchun Co-generation Power Plant ("Changchun Co-generation") is located in the city of Changchun in Jilin Province. Changchun Co-generation, including Phase I and Phase II, has an installed capacity of 700 MW and consists of two 350 MW coal-fired generating units which commenced operations in 2009. We hold 100% equity interest in Changchun Co-generation.

The coal supply for Changchun Co-generation is mainly obtained from Inner Mongolia Autonomous Region. Changchun Co-generation typically stores 160,000 tons of coal on site. Changchun Co-generation obtained 87.8% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Changchun Co-generation in 2017 was RMB349.00 (2016: RMB288.58) per ton.

Changchun Co-generation sells its electricity to Jilin Electric Power Company.

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Nongan Biomass

Huaneng Nongan Biomass Power Plant ("Nongan Biomass") is located in the city of Changchun in Jilin Province. The installed capacity of Nongan Biomass is 25 MW and consists of one 25 MW generating unit, which commenced operation in December 2011. We hold 100% equity interest in Nongan Biomass.

Nongan Biomass also uses coal to meet part of its fuel needs. Nongan Biomass typically stores 40,000 tons of coal on site. The average coal purchase price for Nongan Biomass in 2017 was RMB303.11 (2016: RMB286.16 ) per ton.

Nongan Biomass sells its electricity to Jilin Electric Power Company.

Linjiang Jubao Hydropower

Huaneng Linjiang Jubao Hydropower Station ("Linjiang Jubao Hydropower") is located in the city of Baishan of Jilin Province. Linjiang Jubao Hydropower consists of four 20 MW hydraulic generating units with a total installed capacity of 80 MW. In December 2011, Unit I of Linjiang Jubao Hydropower with an installed capacity of 20 MW passed a trial run. Unit I and Unit II of Linjiang Jubao Hydropower with an installed capacity of 20 MW each commenced operation in December 2011 and May 2012, respectively. Unit III and Unit IV of Linjiang Jubao Hydropower with an installed capacity of 20 MW commenced operation in May and August 2012, respectively. We hold 100% equity interest in Linjiang Jubao Hydropower.

Linjiang Jubao Hydropower sells its electricity to Jilin Electric Power Company.

Zhenlai Wind Power

Huaneng Zhenlai Mali Wind Power Plant ("Zhenlai Wind Power") is located in the city of Baicheng in Jilin Province. Phase I of the Zhenlai Wind Power commenced operation in June 2009, with an installed capacity of 49.5 MW, consisting of 33 wind power turbines of 1.5 MW each. Phase II of the Zhenlai Wind Power commenced operation in December 2011, with an installed capacity of 49.5 MW, consisting of 33 wind power turbines of 1.5 MW each. We hold 100% of the equity interest in Zhenlai Wind Power.

Zhenlai Wind Power sells its electricity to Jilin Electric Power Company.

Siping Wind Power

Huaneng Siping Wind Power Plant ("Siping Wind Power") is located in the city of Siping in Jilin Province. Phase I of the Siping Wind Power commenced operation in October 2010, with an installed capacity of 75 MW, consisting of 50 wind power turbines of 1.5 MW each. Phase II of the Siping Wind Power commenced operation in November 2010, with an installed capacity of 50 MW, consisting of 25 wind power turbines of 2 MW each. Phase III of the Siping Wind Power commenced operation in December 2010, with an installed capacity of 75 MW, consisting of 50 wind power turbines of 1.5 MW each. We hold 100% of the equity interest in Siping Wind Power.

Siping Wind Power sells its electricity to Jilin Electric Power Company.

Tongyu Tuanjie Wind Power

Huaneng Jilin Tongyu Tuanjie Wind Power Plant ("Tongyu Tuanjie Wind Power") is located in the city of Baicheng in Jilin Province. Tongyu Tuanjie Wind Power commenced operation in December 2015, with an installed capacity of 148 MW, consisting of 74 wind power turbines of 2 MW each. We hold 100% of the equity interest in Tongyu Tuanjie Wind Power.

Tongyu Tuanjie Wind Power sells its electricity to Jilin Electric Power Company.

Linjiang Jubao Photovoltaic

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Linjiang Jubao 15 MW Photovoltaic Power Plant ("Linjiang Jubao Photovoltaic") is located in the city of Linjiang in Jilin Province. Linjiang Jubao Photovoltaic commenced operation in June 2017, with an installed capacity of 15 MW. We hold 100% of the equity interest in Linjiang Jubao Photovoltaic.

Linjiang Jubao Photovoltaic sells its electricity to Jilin Electric Power Company.

Power Plants in Liaoning Province

Dalian Power Plant

Huaneng Dalian Power Plant ("Dalian Power Plant") is located on the outskirts of Dalian, on the coast of Bohai Bay. Dalian Power Plant, including Phase I and Phase II, has an installed capacity of 1,400 MW and consists of four 350 MW coal-fired generating units which commenced operations in 1988 and 1999 respectively. We hold 100% equity interest in Dalian Power Plant.

The coal supply for Dalian Power Plant is obtained from several coal producers located mostly in Northern Shanxi Province. The coal is transported by rail from the mines to Qinhuangdao port and shipped by special 27,000 ton automatic unloading ships to the wharf at the Dalian Power Plant. The wharf is owned and maintained by the Dalian Port Authority and is capable of handling 30,000 ton vessels. Dalian Power Plant typically stores 200,000 tons of coal on site.

In 2017, Dalian Power Plant obtained 52.7% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Dalian Power Plant in 2017 was RMB549.27 (2016: RMB461.63) per ton.

Dalian Power Plant sells its electricity to Liaoning Electric Power Company.

Dandong Power Plant

Huaneng Dandong Power Plant ("Dandong Power Plant") is located on the outskirts of the city of Dandong in Liaoning. Dandong Power Plant had originally been developed by HIPDC which, pursuant to the Reorganization Agreement, transferred all its rights and interests therein to us effective December 31, 1994. In March 1997, we began the construction of Dandong Power Plant, which comprises two 350 MW coal-fired generating units. We hold 100% equity interest in Dandong Power Plant.

The coal supply for Dandong Power Plant is obtained from several coal producers in Northern Shanxi Province. The coal is transported by rail from the mines to Qinhuangdao port and shipped by barge to the Dandong port in Dandong, where it is unloaded and transported to Dandong Power Plant using special coal handling facilities. The wharf is owned and maintained by Dandong Power Plant and is capable of handling 28,000 ton vessels. Dandong Power Plant typically stores 220,000 tons of coal on site.

In 2017, Dandong Power Plant obtained 20.8% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Dandong Power Plant in 2017 was RMB528.38 (2016: RMB417.25) per ton.

Dandong Power Plant sells its electricity to Liaoning Electric Power Company.

Yingkou Power Plant

Huaneng Yingkou Power Plant ("Yingkou Power Plant") is located in Yingkou City in Liaoning Province. Yingkou Power Plant Phase I has an installed capacity of 640 MW and consists of two 320 MW supercritical coal-fired generating units which commenced operations in January and December 1996, respectively. Yingkou Power Plant Phase II has an installed capacity of 1,200MW and consists of two 600 MW coal-fired generating units which commenced operations in August and October 2007, respectively. We hold 100% equity interest in Yingkou Power Plant.

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The coal supply for Yingkou Power Plant is mainly obtained from Shanxi Province. Yingkou Power Plant typically stores 400,000 tons of coal on site. In 2017, Yingkou Power Plant obtained 37.9% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Yingkou Power Plant in 2017 was RMB540.89 (2016: RMB453.18) per ton.

Yingkou Power Plant sells its electricity to Liaoning Electric Power Company.

Yingkou Co-generation

Huaneng Yingkou Co-generation Power Plant ("Yingkou Co-generation") is located in Yingkou City in Liaoning Province. Yingkou Co¬-generation Power Plant has an installed capacity of 660 MW and consists of two 330 MW generating units which commenced operation in December 2009. We hold 100% equity interest in Yingkou Co-generation Power Plant.

The coal supply for Yingkou Co-generation Power Plant is mainly obtained from Inner Mongolia Autonomous Region. Yingkou Co-generation Power Plant typically stores 140,000 tons of coal on site. In 2017, Yingkou Co-generation Power Plant obtained 98.0% of its total consumption of coal from annual contracts. The average coal purchase price for Yingkou Co-generation Power Plant in 2017 was RMB411.04 (2016: RMB327.68) per ton.

Yingkou Co-generation Power Plant sells its electricity to Liaoning Electric Power Company.

Wafangdian Wind Power

Dalian Wafangdian Wind Power Plant ("Wafangdian Wind Power") is located in Dalian City in Liaoning Province. The installed capacity of phase I of Wafangdian Wind Power Plant is 48 MW and consists of 24 turbines. It commenced operation in June 2011. We hold 100% equity interest in Wafangdian Wind Power Plant.

Wafangdian Wind Power sells its electricity to Liaoning Electric Power Company.

Suzihe Hydropower

Liaoning Suzihe Hydropower Plant ("Suzihe Hydropower") is located in Liaoning Province. The installed capacity of Suzihe Hydropower Plant is 37.5 MW and consists of three 12.5 MW generating units. Unit I (12.5 MW) of Suzihe Hydropower commenced operation in August 2012. We hold 100% equity interest in Suzihe Hydropower.

Changtu Wind Power

Huaneng Liaoning Changtu Wind Power Plant ("Changtu Wind Power") is located in Liaoning Province. Phase I of the Changtu Wind Power commenced operation in November 2012, with an installed capacity of 49.5 MW, consisting of 33 wind power turbines of 1.5 MW each. Phase II of the Changtu Wind Power commenced operation in October 2014, with an installed capacity of 48 MW, consisting of 24 wind power turbines of 2 MW each. We hold 100% of the equity interest in Changtu Wind Power.

Dandong Photovoltaic

Dandong 10 MW Photovoltaic Power Plant ("Dandong Photovoltaic") is located in Liaoning Province. Dandong Photovoltaic commenced operation in May 2016, with an installed capacity of 10 MW. We hold 100% of the equity interest in Dandong Photovoltaic.

Dandong Photovoltaic sells its electricity to Liaoning Electric Power Company.

Yingkou Co-generation Photovoltaic

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Yingkou Co-generation 10 MW Photovoltaic Power Plant ("Yingkou Co-generation Photovoltaic") is located in Liaoning Province. Yingkou Co-generation Photovoltaic commenced operation in June 2016, with an installed capacity of 10 MW. We hold 100% of the equity interest in Yingkou Co-generation Photovoltaic.

Yingkou Co-generation Photovoltaic sells its electricity to Liaoning Electric Power Company.

 Yingkou Xianrendao Co-generation Power

Yingkou Xianrendao Co-generation Power Plant ("Yingkou Xianrendao Co-generation Power") is located in the city of Yingkou of Liaoning Provinces. Yingkou Xianrenao Co-generation Power commenced operation in March 2017, with two sets of generating units of 50 MW each. We hold 100% equity interest in Yingkou Xianrendao Co-generation Power. In 2017, Yingkou Xianrendao Co-generation Power obtained 76.6% of its total consumption of coal from annual contracts. The average coal purchase price for Yingkou Xianrendao Co-generation Power in 2017 was RMB443.00 per ton.

Yingkou Xianrendao Co-generation Power sells its electricity to Liaoning Electric Power Company.

Jianchang Bashihan Photovoltaic

Jianchang Bashihan 20 MW Photovoltaic Power Plant ("Jianchang Bashihan Photovoltaic") is located in the city of Huludao of Liaoning Province. Jianchang Bashihan Photovoltaic commenced operation in August 2017, with an installed capacity of 22.03 MW. We hold 100% of the equity interest in Jianchang Bashihan Photovoltaic.

Jianchang Bashihan Photovoltaic sells its electricity to Liaoning Electric Power Company.

Jianchang Bashihan Photovoltaic Phase II

Jianchang Bashihan 20 MW Photovoltaic Phase II Power Plant ("Jianchang Bashihan Photovoltaic Phase II") is located in the city of Huludao of Liaoning Province. Jianchang Bashihan Photovoltaic Phase II commenced operation in August 2017, with an installed capacity of 22.03 MW. We hold 100% of the equity interest in Jianchang Bashihan Photovoltaic Phase II.

Jianchang Bashihan Photovoltaic Phase II sells its electricity to Liaoning Electric Power Company.

Xiao Deyingzi Photovoltaic

Xiao Deyingzi 15 MW Photovoltaic Power Plant ("Xiao Deyingzi Photovoltaic") is located in the city of Huludao of Liaoning Province. Xiao Deyingzi Photovoltaic commenced operation in August 2017, with an installed capacity of 15.56 MW. We hold 100% of the equity interest in Xiao Deyingzi Photovoltaic.

Xiao Deyingzi Photovoltaic sells its electricity to Liaoning Electric Power Company.

Chaoyang Heiniuyingzi Photovoltaic

Chaoyang Heiniuyingzi 17 MW Photovoltaic Power Plant ("Chaoyang Heiniuyingzi Photovoltaic") is located in the city of Chaoyang of Liaoning Province. Chaoyang Heiniuyingzi Photovoltaic commenced operation in August 2017, with an installed capacity of 18.79 MW. We hold 100% of the equity interest in Chaoyang Heiniuyingzi Photovoltaic.

Chaoyang Heiniuyingzi Photovoltaic sells its electricity to Liaoning Electric Power Company.

Power Plant in Inner Mongolia Autonomous Region

Huade Wind Power

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Huaneng Huade Wind Power Plant ("Huade Wind Power") is located in Huade, Inner Mongolia Autonomous Region. Phase I of Huade Wind Power has an installed capacity of 49.5 MW and consists of 33 wind power turbines which commenced operation in 2009. Phase II of Huade Wind Power has an installed capacity of 49.5 MW and consists of 33 wind power turbines which commenced operation in June 2011. We hold 100% equity interest in Huade Wind Power Plant.

Huade Wind Power sells its electricity to Inner Mongolia Power (Group) Co., Ltd.

Power Plants in Hebei Province

Shang'an Power Plant

Huaneng Shang'an Power Plant ("Shang'an Power Plant") is located on the outskirts of Shijiazhuang. Shang'an Power Plant has been developed in three separate expansion phases. The Shang'an Power Plant Phase I has an installed capacity of 700 MW and consists of two 350 MW coal-fired generating units which commenced operations in 1990. Shang'an Power Plant Phase II shares with the Shang'an Power Plant Phase I certain facilities, such as coal storage facilities and effluence pipes, which have been built to accommodate the requirements of plant expansions. The Shang'an Power Plant Phase II utilizes two 330 MW coal-fired generating units, which commenced operation in 1997. The Shang'an Power Plant Phase III has an installed capacity of 1,200 MW and consists of two 600 MW supercritical coal-fired generating units which commenced operations in July and August 2008, respectively. Unit 5 of Shang'an Power Plant is the first 600MW supercritical air-cooling unit which commenced operation in the PRC. We hold 100% equity interest in Shang'an Power Plant.

The coal supply for Shang'an Power Plant is obtained from numerous coal producers in Central Shanxi Province, which is approximately 64 kilometers from Shang'an Power Plant. The coal is transported by rail from the mines to the Shang'an Power Plant. We own and maintain the coal unloading facilities which are capable of unloading 10,000 tons of coal per day. Shang'an Power Plant typically stores 300,000 tons of coal on site.

In 2017, Shang'an Power Plant obtained 91.9% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Shang'an Power Plant in 2017 was RMB486.86 (2016: RMB337.33) per ton.

Shang'an Power Plant sells its electricity to Hebei Electric Power Company.

Kangbao Wind Power

Huaneng Kangbao Wind Power Plant ("Kangbao Wind Power") consists of 33 wind power turbines with a total installed capacity of 49.5 MW. In January 2011, the Phase I of Kangbao Wind Power with a total generation capacity of 49.5MW completed the trial run. We hold 100% equity interest in Kangbao Wind Power.

Kangbao Wind Power sells its electricity to Hebei Electric Power Company.

Kangbao Xitan Photovoltaic

Kangbao Xitan Photovoltaic ("Kangbao Xitan Photovoltaic") is located in Kangbao, Zhangjiakou, Hebei. Kangbao Xitan Photovoltaic commenced operation in June 2016, with an installed capacity of 20 MW. We hold 100% equity interest in Kangbao Xitan Photovoltaic.

Kangbao Xitan Photovoltaic sells its electricity to Hebei Electric Power Company.

Zhuolu Dabao Wind Power

Zhuolu Dabao Wind Power Plant ("Zhuolu Dabao Wind Power") consists of 24 wind power turbines with a total installed capacity of 48 MW, consisting of 24 wind power turbines of 2MW each. Zhuolu Dabao Wind Power commence operation in March 2017. We hold 100% equity interest in Kangbao Wind Power.

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Zhuolu Dabao Wind Power sells its electricity to Hebei Electric Power Company.

Shang'an Dianchanghuichang Photovoltaic

Shangan Dianchanhuichang 18 MW Photovoltaic Power Plant ("Shang'an Dianchanhuichang Photovoltaic") is located in the city of Shijiazhuang of Hebei Province. Shang’an Dianchanghuichang Photovoltaic commenced operation in December 2017, with an installed capacity of 17 MW. We hold 100% of the equity interest in Shang'an Dianchanhuichang Photovoltaic.

Shang'an Dianchanghuichang Photovoltaic sells its electricity to Hebei Electric Power Company.

Power Plant in Gansu Province

Pingliang Power Plant

Huaneng Pingliang Power Plant ("Pingliang Power Plant") is located in Pingliang City of Gansu Province. Pingliang Power Plant consists of three 325 MW and one 330 MW coal-fired generating units which commenced operation in 2000, 2001 and June and November 2003 respectively. The installed capacity of Unit I, Unit II and Unit III of Pingliang Power Plant were expanded from 300 MW to 325 MW in January 2010, respectively. The installed capacity of Unit IV of Pingliang Power Plant was expanded from 300 MW to 330 MW in January 2011. Pingliang Power Plant Phase II consists of two 600 MW generating units with a total installed capacity of 1200 MW, which commenced operation in February 2010 and March 2010, respectively. We hold 65% equity interest in Pingliang Power Plant.

The coal supply for Pingliang Power Plant is obtained from local coal mines. Pingliang Power Plant typically stores 230,000 tons of coal on site. In 2017, Pingliang Power Plant obtained 93.5% of its coal supplies from annual contracts and the remainder from the open market. The average coal purchase price for Pingliang Power Plant in 2017 was RMB356.70 (2016: RMB270.81) per ton.

Pingliang Power Plant sells its electricity to Gansu Electric Power Company.

Jiuquan Wind Power

Jiuquan Wind Power Plant ("Jiuquan Wind Power") consists of 234 wind power turbines of 1.5 MW each and 25 wind power turbines of 2 MW each. In December 2011, all the wind power plants completed the trial run. We hold 100% equity interest in Jiuquan Wind Power.

Jiuquan Wind Power sells its electricity to Gansu Electric Power Company.

Jiuquan II Wind Power

Jiuquan II Wind Power Plant ("Jiuquan II Wind Power") is located in Gansu Province. Zone A of this plant commenced operation in December 2014, with an installed capacity of 200 MW in operating, consisting of 100 wind power turbines of 2 MW each. Zone B of this plant commenced operation in June 2015, with an installed capacity of 200 MW in operating, consisting of 100 wind power turbines of 2 MW each. We hold 100% equity interest in Jiuquan II Wind Power.

Jiuquan II Wind Power sells its electricity to Gansu Electric Power Company.

Yumen Wind Power

Yumen Wind Power Plant ("Yumen Wind Power") is located in Gansu Province. This plant commenced operation in June 2015, with an installed capacity of 148.5 MW, consisting of 67 wind power turbines of 1.5 MW each and 24 wind power turbines of 2 MW each. We hold 100% equity interest in Yumen Wind Power.

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Yumen Wind Power sells its electricity to Gansu Electric Power Company.

Yigang Wind Power

Yigang Wind Power ("Yigang Wind Power") is located in Gansu Province. This plant commenced operation in December 2015, with an installed capacity of 192 MW, consisting of 96 wind power turbines of 2 MW each. We hold 100% equity interest in Yigang Wind Power.

Yigang Wind Power sells its electricity to Gansu Electric Power Company.

Power Plant in Beijing Municipality

Beijing Co-generation

Huaneng Beijing Co-generation Power Plant ("Beijing Co-generation") is located in Beijing Municipality. Beijing Co-generation has an installed capacity of 845 MW and consists of two 165 MW generating units, two 220 MW generating units and one 75 MW generating units which commenced operation in January 1998, December 1998, June 1999 and April 2004, respectively. We hold 41% equity interest in Beijing Co-generation and believe we exercise effective control over Beijing Co-generation.

The coal supply for Beijing Co-generation is mainly obtained from Inner Mongolia Autonomous Region. Beijing Co-generation typically stores 165,000 tons of coal on site. In 2017, Beijing Co-generation obtained 100% of its total consumption of coal from annual contracts. The average coal purchase price for Beijing Co-generation in 2017 was RMB529.61 (2016: RMB434.53) per ton.

Beijing Co-generation sells its electricity to Beijing Electric Power Company.

Beijing Co-generation CCGT

Beijing Co-generation CCGT consists of one set of "two on one" F-grade gas and steam combined cycle generating units with a power generation capacity of 923.4 MW, heat supply capacity of 650 MW and heat supply area of approximately 13,000,000 square meters. High-standard denitrification, noise reduction, water treatment and other environmental protection facilities were constructed concurrently. In December 2011, Beijing Co-generation CCGT completed its trial run. Beijing Co-generation CCGT sells its electricity to North China Electric Company.

Being the first project commencing construction among the four major co-generation centers in Beijing, Beijing Co-generation CCGT firstly introduced the most efficient world-class F-grade gas turbine in the PRC, thus setting a new record of the maximum heat supply capacity, minimum power consumption for power generation and highest annual thermal efficiency for the same type of generating units in the PRC and attaining a leading and international class design standard in the PRC.

Beijing Co-generation Phase III

Beijing Co-generation Phase III consists of two sets of F-grade gas and steam combined cycle generating units with a power generation capacity of 998 MW. Beijing Co-generation Phase III commence operation in November 2017. We hold 41% equity interest in Beijing Co-generation Phase III.

 Beijing Co-generation CCGT sells its electricity to Beijing Electric Company.

Power Plant in Tianjin Municipality

Yangliuqing Co-generation

Tianjin Huaneng Yangliuqing Co-generation Power Plant ("Yangliuqing Co-generation") is located in Tianjin Municipality. Yangliuqing Co-generation has an installed capacity of 1,200 MW and consists of four 300

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MW coal-fired co-generation units which commenced operation in December 1998, September 1999, December 2006 and May 2007, respectively. We hold 55% equity interest in Yangliuqing Co-generation.

The coal supply for Yangliuqing Co-generation mainly obtained from Shanxi Province and Inner Mongolia Autonomous Region. Yangliuqing Co-generation typically stores 300,000 tons of coal on site. In 2017, Yangliuqing Co-generation obtained 76.1% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Yangliuqing Co-generation in 2017 was RMB496.91 (2016: RMB404.07) per ton.

Yangliuqing Co-generation sells its electricity to Tianjin Electric Company.

Lingang Co-generation CCGT

Lingang Co-generation CCGT is located in Tianjin Municipality. The first set of generating units of Lingang Co-generation CCGT commenced operation in December 2014, with an installed capacity of 463 KW. We hold 100% equity interest in the Lingang Co-generation CCGT. The gas supply for Lingang Co-generation CCGT is transported through the pipeline of "Shaanxi-Gansu-Ningxia Transport Project."

Lingang Co-generation CCGT sells its electricity to Tianjin Electric Company.

Chenxi Photovoltaic

Chenxi 2.2 MW Photovoltaic Power Plant ("Chenxi Photovoltaic") is located in the city of Tianjin. Chengxi Photovoltaic commenced operation in June 2017, with an installed capacity of 2.2 MW. We hold 55% of the equity interest in Chenxi Photovoltaic.

Chenxi Photovoltaic sells its electricity to Tianjin Electric Power Company.

Power Plant in Shanxi Province

Yushe Power Plant

Huaneng Yushe Power Plant ("Yushe Power Plant") is located in Yushe County of Shanxi Province. Yushe Power Plant Phase I has an installed capacity of 200 MW and consists of two 100 MW coal-fired generating units which commenced operations in August and December 1994, respectively. Two 300 MW coal-fired generating units of Yushe Power Plant Phase II commenced operations in October and November 2004, respectively. Yushe Power Plant Phase I was shut down in 2011. We hold 60% equity interest in Yushe Power Plant.

The coal supply for Yushe Power Plant is obtained from several coal producers located mostly in Shanxi Province. Yushe Power Plant typically stores 500,000 tons of coal on site. In 2017, Yushe Power Plant obtained approximately 38.1% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Yushe Power Plant in 2017 was RMB316.51 (2016: RMB252.95) per ton.

Yushe Power Plant sells its electricity to Shanxi Electric Power Company.

Zuoquan Power Plant

Shanxi Huaneng Zuoquan Power Plant ("Zuoquan Power Plant") is located in Zuoquan County of Shanxi Province. Zuoquan Power Plant has an installed capacity of 1,346 MW and consists of two 673 MW coal-fired generating units which commenced operations in December 2011 and January 2012, respectively. We hold 80% equity interest in Zuoquan Power Plant.

Zuoquan Power Plant typically stores 200,000 tons of coal on site. In 2017, Zuoquan Power Plant obtained approximately 29.9% of its total consumption of coal from annual contracts and the remainders from the open

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market. The average coal purchase price for Zuoquan Power Plant in 2017 was RMB348.06 (2016: RMB266.31) per ton.

Zuoquan Power Plant sells its electricity to Shanxi Electric Power Company.

Dongshan Combined Cycle Gas Turbine Power Plant

Dongshan Combined Cycle Gas Turbine Power Project ("Dongshan CCGT") is located at Taiyuan City of Shanxi Province. Dongshan CCGT commenced operation in October 2015 with an installed capacity of 859 KW, consisting of one 2×F Class gas-steam combined cycle co-generating unit. We hold 100% equity interest in the plant.

Dongshan CCGT sells its electricity to Shanxi Electric Power Company.

Yushe Photovoltaic

Yushe 50 MW Photovoltaic Power Plant ("Yushe Photovoltaic") is located in the city of Jinzhong of Shanxi Province. Yushe Photovoltaic commenced operation in June 2017, with an installed capacity of 50 MW. We hold 100% of the equity interest in Yushe Photovoltaic.

Yushe Photovoltaic sells its electricity to Shanxi Electric Power Company.

Power Plants in Shandong Province

Dezhou Power Plant

Huaneng Dezhou Power Plant ("Dezhou Power Plant") is located in Dezhou City, near the border between Shandong and Hebei Provinces, close to an industrial zone that is an important user of electric power for industrial and commercial purposes. Dezhou Power Plant is comprised of three phases, with Phase I consisting of one 320MW and one 330MW coal-fired generating units, Phase II consisting of one 330MW and one 320MW coal-fired generating units, and Phase III consisting of two 700 MW coal-fired generating units. The installed capacity of Unit IV was upgraded from 300 MW to 320 MW in January 2009. We hold 100% equity interest in Dezhou Power Plant.

Dezhou Power Plant is approximately 200 km from Taiyuan, Shanxi Province, the source of the plant's coal supply. The plant is located on the Taiyuan-Shijiazhuang-Dezhou rail line, giving it access to transportation facilities for coal. Dezhou Power Plant typically stores 400,000 tons of coal on site. In 2017, Dezhou Power Plant obtained approximately 70.8% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Dezhou Power Plant in 2017 was RMB525.39 (2016: RMB387.99) per ton. The plant is connected to the main trunk rail line at Dezhou by a dedicated 3.5 km spur line owned by us.

Dezhou Power Plant sells its electricity to State Grid Shandong Electric Power Company.

Jining Power Plant

Huaneng Jining Power Plant ("Jining Power Plant") is located in Jining City, near the Jining load center and near numerous coal mines. Yanzhou coal mine, which is adjacent to the plant, alone has an annual production of approximately 20 million tons. Jining Power Plant typically stores 100,000 tons of coal on site.

Jining Power Plant currently consists of two coal-fired generating units, with an aggregate installed capacity of 270 MW. In addition, Jining Power Plant (Co-generation) has an installed capacity of 700 MW and consists of two 350 MW generating units which commenced operation in November and December 2009, respectively. We hold 100% equity interest in Jining Power Plant.

In 2017, Jining Power Plant obtained approximately 33.6% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Jining Power Plant in 2017 was RMB580.38 (2016: RMB428.63) per ton.

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Jining Power Plant sells its electricity to State Grid Shandong Electric Power Company.

Xindian Power Plant

Huaneng Xindian Power Plant ("Xindian Power Plant") is located in Zibo City of Shandong Province. Xindian Power Plant has an installed capacity of 450 MW and consists of two 225 MW coal-fired generating units which commenced operations in December 2001 and January 2002, respectively, and were shut down in September 2009. Xindian Power Plant Phase III consists of two 300 MW generating units with a total installed capacity of 600 MW, which were put into operation in September and November 2006, respectively. We hold 95% equity interest in Xindian Power Plant Phase III.

The coal supply for Xindian Power Plant is obtained from several coal producers located mostly in Shanxi Province. Xindian Power Plant typically stores 250,000 tons of coal on site. In 2017, Xindian Power Plant obtained 3% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Xindian Power Plant in 2017 was RMB608.35 (2016: RMB437.49) per ton.

Xindian Power Plant sells its electricity to State Grid Shandong Electric Power Company.

Weihai Power Plant

Huaneng Weihai Power Plant ("Weihai Power Plant") is located approximately 16 km southeast of Weihai City, on the shore of the Bohai Gulf. Its location provides access to cooling water for operations and transportation of coal as well as ash and slag disposal facilities. We hold 60% equity interest in Weihai Power Plant, the remaining 40% interest of which is owned by Weihai Power Development Bureau ("WPDB").

Weihai Power Plant Phase I consists of two 125 MW generating units (Units I and II), and Phase II consists of two 320 MW generating units (Units III and IV). Unit I began commercial operation in May 1994 and was shut down in December 2008, and Unit II began commercial operation in January 1995 and was shut down in November 2008. Unit III and Unit IV commenced operation in March and November 1998, respectively. Each of the Units III and IV was upgraded from 300 MW to 320 MW in January 2009. Weihai Power Plant Phase III consists of two 680 MW generating units which commenced operations in December 2012. The coal supply for Weihai Power Plant is obtained from Shanxi Province and Inner Mongolia. Weihai Power Plant typically stores 160,000 tons of coal on site. In 2017, Weihai Power Plant obtained approximately 22.5% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Weihai Power Plant in 2017 was RMB573.98 (2016: RMB478.06) per ton.

Weihai Power Plant sells its electricity to State Grid Shandong Electric Power Company.

Rizhao Power Plant

Huaneng Rizhao Power Plant ("Rizhao Power Plant") is located in Rizhao City of Shandong Province. Rizhao Power Plant currently has an aggregate installed capacity of 2,060 MW. Rizhao Power Plant Phase I has an installed capacity of 700 MW and consists of two 350 MW coal-fired generating units which both commenced operations in April 2000. We hold 88.8% equity interests in Phase I of Rizhao Power Plant.

We hold 100% equity interest in Phase II of Rizhao Power Plant, which commenced operation in December 2008 and consists of two 680 MW supercritical coal-fired generating units. The coal supply for Phase II of Rizhao Power Plant is obtained from Shanxi Province. Phase II of Rizhao Power Plant typically stores 217,800 tons of coal on site. In 2017, Phase II of Rizhao Power Plant obtained 7.6% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Phase II of Rizhao Power Plant in 2017 was RMB601.16 (2016: RMB467.33) per ton.

Rizhao Power Plant sells its electricity to State Grid Shandong Electric Power Company.

Zhanhua Co-generation

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Shandong Zhanhua Co-generation Limited Company ("Zhanhua Co-generation") is located in Zhanhua City of Shandong Province. Zhanhua Co-generation currently has an aggregate installed capacity of 330 MW, consisting of two generating units which commenced operations in July 2005. We hold 100% equity interest in Zhanhua Co-generation.

The coal supply for Zhanhua Co-generation is mainly obtained from Inner Mongolia Autonomous Region. Zhanhua Co-generation typically stores 90,000 tons of coal on site. In 2017, Zhanhua Co-generation obtained 27.3% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Zhanhua Co-generation in 2017 was RMB563.71 (2016: RMB405.46) per ton.

Zhanhua Co-generation sells its electricity to State Grid Shandong Electric Power Company.

Baiyanghe Power Plant

Huaneng Shandong Zibo Baiyanghe Power Plant ("Baiyanghe Power Plant") is located in the city of Zibo in Shandong Province. Baiyanghe Power Plant currently has an aggregate installed capacity of 890 MW. Baiyanghe Power Plant Phase I has an installed capacity of 290 MW and consists of two 145 MW coal-fired generating units which commenced operations in October 2003. Baiyanghe Power Plant Phase II has an installed capacity of 600 MW and consists of two 300 MW coal-fired generating units which commenced operations in December 2009. We hold 80% equity interests in Baiyanghe Power Plant.

The coal supply for Baiyanghe Power Plant is obtained from several coal producers located in the provinces of Shandong, Shanxi, Shaanxi and Inner Mongolia Autonomous Region. Baiyanghe Power Plant typically stores 125,300 tons of coal on site. In 2017, Baiyanghe Power Plant obtained 18.8% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Baiyanghe Power Plant in 2017 was RMB551.56 (2016: RMB425.78) per ton.

Baiyanghe Power Plant sells its electricity to State Grid Shandong Electric Power Company.

Jiaxiang Power Plant

Huaneng Jiaxiang Power Plant ("Jiaxiang Power Plant") is located in the city of Jining in Shandong Province. Jiaxiang Power Plant currently has an aggregate installed capacity of 660 MW which consists of two 330 MW coal-fired generating units which commenced operations in September 1999 and January 2003, respectively. We hold 40% equity interests in Jiaxiang Power Plant.

The coal supply for Jiaxiang Power Plant is obtained from several coal producers located in the Shandong Province. Jiaxiang Power Plant typically stores 115,300 tons of coal on site. In 2017, Jiaxiang Power Plant obtained 93.7% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Jiaxiang Power Plant in 2017 was RMB535.62 (2016: RMB378.87) per ton.

Jiaxiang Power Plant sells its electricity to State Grid Shandong Electric Power Company.

Jining Co-generation

Huaneng Jining Co-generation Power Plant ("Jining Co-generation") is located in the city of Jining in Shandong Province. Jining Co-generation currently has an aggregate installed capacity of 60 MW which consists of two 30 MW coal-fired generating units which commenced operations in April and  July 2004, respectively. We hold 40% equity interests in Jining Co-generation.

The coal supply for Jining Co-generation is obtained from several coal producers located in the Shandong Province. Jining Co-generation typically stores 10,600 tons of coal on site. In 2017, Jining Co-generation obtained 88.6% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Jining Co-generation in 2017 was RMB501.70 (2016: RMB353.48) per ton.

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Jining Co-generation sells its electricity to State Grid Shandong Electric Power Company.

Qufu Co-generation

Huaneng Qufu Shengcheng Co-generation Power Plant ("Qufu Co-generation") is located in the city of Jining in Shandong Province. Qufu Co-generation currently has an aggregate installed capacity of 450 MW which consists of one 225 MW coal-fired generating unit which commenced operations in February 2009 and one 225 MW coal-fired generating unit which commenced operations in September 2009. We hold 40% equity interests in Qufu Co-generation.

The coal supply for Qufu Co-generation is obtained from several coal producers located in the Shandong Province. Qufu Co-generation typically stores 34,100 tons of coal on site. In 2017, Qufu Co-generation obtained 96.7% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Qufu Co-generation in 2017 was RMB544.29 (2016: RMB396.87) per ton.

Qufu Co-generation sells its electricity to State Grid Shandong Electric Power Company.

Huangtai Power Plant

Huaneng Jinan Huangtai Power Plant ("Huangtai Power Plant") is located in the city of Jinan in Shandong Province. Huangtai Power Plant currently has an aggregate installed capacity of 680 MW which consists of one 330 MW coal-fired generating unit which commenced operations in November 1987 and one 350 MW coal-fired generating unit which commenced operations in January 2011. We hold 72% equity interests in Huangtai Power Plant.

The coal supply for Huangtai Power Plant is obtained from several coal producers located in the provinces of Shandong, Shanxi, Shaanxi and Inner Mongolia Autonomous Region. Huangtai Power Plant typically stores 155,700 tons of coal on site. In 2017, Huangtai Power Plant obtained 23.4% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Huangtai Power Plant in 2017 was RMB602.21 (2016: RMB416.26) per ton.

Huangtai Power Plant sells its electricity to State Grid Shandong Electric Power Company.

Yantai Power Plant

Huaneng Yantai Power Plant ("Yantai Power Plant") is located in the city of Yantai in Shandong Province. Yantai Power Plant currently has an aggregate installed capacity of 590 MW which consists of one 110 MW and three 160 MW coal-fired generating units. The 110 MW unit commenced operations in April 1996, and the three 160 MW units commenced operation in October 2005, December 2005 and October 2006 respectively. We hold 80% equity interest in Yantai Power Plant.

The coal supply for Yantai Power Plant is obtained from Shanxi Province, Inner Mongolia Autonomous Region and partially imported coal. Yantai Power Plant typically stores 176,100 tons of coal on site. In 2017, Yantai Power Plant obtained 78.4% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Yantai Power Plant in 2017 was RMB561.89 (2016: RMB456.69) per ton.

Yantai Power Plant sells its electricity to State Grid Shandong Electric Power Company.

Linyi Power Plant

Huaneng Linyi Power Plant ("Linyi Power Plant") is located in the city of Linyi in Shandong Province. Linyi Power Plant currently has an aggregate installed capacity of 1,260 MW which consists of four 140 MW and two 350 MW coal-fired generating units. The 350 MW units commenced operations in December 2012 and October

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2013, respectively, and the four 140 MW units commenced operation in December 1997, April 2003, September 2003 and April 2005, respectively. We hold 60% equity interest in Linyi Power Plant.

The coal supply for Linyi Power Plant is obtained from several coal producers located in the provinces of Shandong, Shanxi, Shaanxi and Inner Mongolia Autonomous Region. Linyi Power Plant typically stores 249,000 tons of coal on site. In 2017, Linyi Power Plant obtained none of its total consumption of coal from the open market. The average coal purchase price for Linyi Power Plant in 2017 was RMB639.79 (2016: RMB490.55) per ton.

Linyi Power Plant sells its electricity to State Grid Shandong Electric Power Company.

Jining Yunhe Power Plant

Huaneng Jining Yunhe Power Plant ("Jining Yunhe Power Plant") is located in the city of Jining in Shandong Province. Jining Yunhe Power Plant currently has an aggregate installed capacity of 1,240 MW which consists of four 145 MW and two 330 MW coal-fired generating units. The 330 MW units commenced operations in March and September 2006, respectively, and the four 145 MW units commenced operation in July 2000, November 2000, September 2003 and February 2004, respectively. We hold 78.68% equity interest in Jining Yunhe Power Plant.

The coal supply for Jining Yunhe Power Plant is obtained from several coal producers located in the Shandong Province. Jining Yunhe Power Plant typically stores 50,900 tons of coal on site. In 2017, Jining Yunhe Power Plant obtained 73.2% of its total consumption of coal from annual contracts and the remainder from the open market from the open market. The average coal purchase price for Jining Yunhe Power Plant in 2017 was RMB556.80 (2016: RMB413.60) per ton.

Jining Yunhe Power Plant sells its electricity to State Grid Shandong Electric Power Company.

Liaocheng Co-generation

Huaneng Liaocheng Co-generation Power Plant ("Liaocheng Co-generation") is located in the city of Liaocheng in Shandong Province. Liaocheng Co-generation currently has an aggregate installed capacity of 660 MW which consists of two 330 MW coal-fired generating unit which commenced operations in January and September 2006, respectively. We hold 60% equity interests in Liaocheng Co-generation.

The coal supply for Liaocheng Co-generation is obtained from several coal producers located in the provinces of Shandong, Shanxi, Shaanxi and Inner Mongolia Autonomous Region. Liaogcheng Co-generation typically stores 141,300 tons of coal on site. In 2017, Liaogcheng Co-generation obtained 17.2% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Liaogcheng Co-generation in 2017 was RMB561.17 (2016: RMB405.01) per ton.

Liaogcheng Co-generation sells its electricity to State Grid Shandong Electric Power Company.

Taian Power Plant

Huaneng Taian Zhongtai Power Plant ("Taian Power Plant") is located in the city of Taian in Shandong Province. Taian Power Plant currently has an aggregate installed capacity of 300 MW which consists of two 150 MW coal-fired generating units, which commenced operations in May and December 2007, respectively. We hold 80% equity interest in Taian Power Plant.

The coal supply for Taian Power Plant is obtained from several coal producers located in the Shandong and Shanxi. Taian Power Plant typically stores 103,600 tons of coal on site. In 2017, Taian Power Plant obtained 37.7% of its total consumption of coal from annual contracts and the remainder from the open market from the open market. The average coal purchase price for Taian Power Plant in 2017 was RMB435.19 (2016: RMB347.60) per ton.

Taian Power Plant sells its electricity to State Grid Shandong Electric Power Company.

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Laiwu Power Plant

Huaneng Laiwu Power Plant ("Laiwu Power Plant") is located in the city of Laiwu in Shandong Province. Laiwu Power Plant currently has an aggregate installed capacity of 2,000 MW which consists of two 1,000 MW coal-fired generating units, which commenced operations in December 2015 and November 2016, respectively. We hold 64% equity interest in Laiwu Power Plant.

The coal supply for Laiwu Power Plant is obtained from several coal producers located in the provinces of Shandong, Shanxi, Shaanxi and Inner Mongolia Autonomous Region. Laiwu Power Plant typically stores 246,600 tons of coal on site. In 2017, Laiwu Power Plant obtained 14.1% of its total consumption of coal from annual contracts and the remainder from the open market from the open market. The average coal purchase price for Laiwu Power Plant in 2017 was RMB645.56 (2016: RMB460.61) per ton.

Laiwu Power Plant sells its electricity to State Grid Shandong Electric Power Company.

Muping Wind Power

Muping Wind Power Plant ("Muping Wind Power") is located in the city of Yantai in Shandong Province. Muping Wind Power Plant consists of 28 wind power turbines of 1.5 MW each. We hold 80% equity interest in Muping Wind Power.

Muping Wind Power sells its electricity to State Grid Shandong Electric Power Company.

Penglai Wind Power

Huaneng Penglai Daliuhang Wind Power Plant ("Penglai Wind Power") is located in the city of Yantai in Shandong Province. Penglai Wind Power Plant consists of 48 wind power turbines of 2 MW each and 2 wind power turbines of 1.8 MW each. We hold 80% equity interest in Penglai Wind Power.

Penglai Wind Power sells its electricity to State Grid Shandong Electric Power Company.

Rushan Wind Power

Huaneng Rushan Wind Power Plant ("Rushan Wind Power") is located in the city of Weihai in Shandong Province. Rushan Wind Power Plant consists of 28 wind power turbines of 1.5 MW each. We hold 80% equity interest in Rushan Wind Power.

Rushan Wind Power sells its electricity to State Grid Shandong Electric Power Company.

Changdao Wind Power

Huaneng Changdao Wind Power Plant ("Changdao Wind Power") is located in the city of Yantai in Shandong Province. Changdao Wind Power Plant consists of 14 wind power turbines of 0.6 MW each, 11 wind power turbines of 0.75 MW each and 3 wind power turbines of 1.3 MW each. We hold 48% equity interest in Changdao Wind Power.

Changdao Wind Power sold its electricity to State Grid Shandong Electric Power Company, and has been shut down.

Rongcheng Wind Power

Huaneng Rongcheng Wind Power Plant ("Rongcheng Wind Power") is located in the city of Weihai in Shandong Province. Rongcheng Wind Power Plant consists of 10 wind power turbines of 1.5 MW each. We hold 48% equity interest in Rongcheng Wind Power.

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Rongcheng Wind Power sells its electricity to State Grid Shandong Electric Power Company.

Dongying Wind Power

Huaneng Dongying Wind Power Plant ("Dongying Wind Power") is located in the city of Dongying in Shandong Province. Dongying Wind Power Plant consists of 32 wind power turbines of 1.5 MW each. We hold 56% equity interest in Dongying Wind Power.

Dongying Wind Power sells its electricity to State Grid Shandong Electric Power Company.

Boshan Photovoltaic

Boshan Photovoltaic Power Plant ("Boshan Photovoltaic") is located in Zibo City. Boshan Photovoltaic commenced its operation in May 2016 and has an installed capacity of 12 MW. We hold 80% equity interest in Boshan Photovoltaic.

Boshan Photovoltaic sells its electricity to State Grid Shandong Electric Power Company.

Gaozhuang Photovoltaic

Gaozhuang Photovoltaic Power Plant ("Gaozhuang Photovoltaic") is located in Laiwu City. Gaozhuang Photovoltaic commenced its operation in May 2016 and has an installed capacity of 20 MW. We hold 80% equity interest in Gaozhuang Photovoltaic.

Gaozhuang Photovoltaic sells its electricity to State Grid Shandong Electric Power Company.

Jining Co-generation Photovoltaic.

Jining Co-generation Photovoltaic Project ("Jining Co-generation Photovoltaic") is located in Jining City. The project commenced its operation in February 2017 and has an installed capacity of 20 MW. We hold 80% equity interest in this project.

Jining Co-generation Photovoltaic sells its electricity to State Grid Shandong Electric Power Company.

Zhanhua Qingfenghu Wind Power

Zhanhua Qingfenghu Wind Power Plant ("Zhanhua Qingfenghu Wind Power") is located in the city of Binzhou in Shandong Province. Zhanhua Qingfenghu Wind Power Plant commenced operation in December 2017 with an installed capacity of 100 MW, including 50 wind power turbines of 2 MW each. We hold 80% equity interest in Zhanhua Qingfenghu Wind Power.

Zhanhua Qingfenghu Wind Power sells its electricity to State Grid Shandong Electric Power Company.

Jining Photovoltaic

Jining 20 MW Photovoltaic Power Plant ("Jining Photovoltaic") is located in the city of Jining of Shandong Province. Jining Photovoltaic commenced its operation in February 2017 and has an installed capacity of 20 MW. We hold 80% equity interest in Jining Photovoltaic.

Jining Photovoltaic sells its electricity to State Grid Shandong Electric Power Company.

Laiwu Niuquan Photovoltaic

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Laiwu Niuquan 20 MW Photovoltaic Power Plant ("Laiwu Niuquan Photovoltaic") is located in the city of Laiwu of Shandong Province. Laiwu Niuquan Photovoltaic commenced its operation in April 2017 and has an installed capacity of 20 MW. We hold 80% equity interest in Laiwu Niuquan Photovoltaic.

Laiwu Niuquan Photovoltaic sells its electricity to State Grid Shandong Electric Power Company.

Furuite Rooftop Photovoltaic

Furuite 6.3MW Photovoltaic Power Plant ("Furuite Photovoltaic") is located in the city of Zibo of Shandong Province. Furuite Photovoltaic commenced its operation in June 2017 and has an installed capacity of 6.3 MW. We hold 76% equity interest in Furuite Photovoltaic.

Furuite Photovoltaic sells its electricity to State Grid Shandong Electric Power Company.

Zhanhua Qingfenghu Photovoltaic

Zhanhua Qingfenghu 100MW Photovoltaic Power Plant ("Zhanhua Qingfenghu Photovoltaic") is located in the city of Binzhou of Shandong Province. Zhanhua Qingfenghu Photovoltaic commenced its operation in June 2017 and has an installed capacity of 100 MW. We hold 46% equity interest in Zhanhua Qingfenghu Photovoltaic.

Zhanhua Qingfenghu Photovoltaic sells its electricity to State Grid Shandong Electric Power Company.

Weihai Haibu Photovoltaic

Weihai Haibu 19.8MW Photovoltaic Power Plant ("Weihai Haibu Photovoltaic") is located in the city of Weihai of Shandong Province. Weihai Haibu Photovoltaic commenced its operation in June 2017 and has an installed capacity of 19.75 MW. We hold 80% equity interest in Weihai Haibu Photovoltaic.

Weihai Haibu Photovoltaic sells its electricity to State Grid  Shandong Electric Power Company.

Jining Weishan Zhaozhuang Photovoltaic

Jining Weishan Zhaozhuang 80MW Photovoltaic Power Plant ("Jining Weishan Zhaozhuang Photovoltaic") is located in the city of Jining of Shandong Province. Jining Weishan Zhaozhuang Photovoltaic commenced its operation in December 2017 and has an installed capacity of 80MW. We hold 80% equity interest in Jining Weishan Zhaozhuang Photovoltaic.

Jining Weishan Zhaozhuang Photovoltaic sells its electricity to State Grid Shandong Electric Power Company.

Power Plants and Projects in Henan Province

Qinbei Power Plant

Huaneng Qinbei Power Plant ("Qinbei Power Plant") is located in Jiyuan City of Henan Province. Its installed capacity is 2,400 MW which consists of four 600 MW supercritical coal-fired generating units. Two units commenced operations in November and December 2004, and the other two units commenced operation in November 2007. In March 2012 and February 2013, two 1,000 MW domestic ultra-supercritical coal-fired generating units of Phase III of Qinbei Power Plant commenced operation, respectively. We hold 60% equity interest in Qinbei Power Plant.

The coal supply for Qinbei Power Plant is obtained from Shanxi Province. Qinbei Power Plant typically stores 270,000 tons of coal on site. In 2017, Qinbei Power Plant obtained 50.2% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Qinbei Power Plant in 2017 was RMB538.13 (2016: RMB401.89) per ton.

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Qinbei Power Plant sells its electricity to Henan Electric Power Company.

Luoyang Co-generation Power Plant

Luoyang Co-generation Power Plant ("Luoyang Co-generation") is located at Luoyang City of Henan Province. The project has an installed capacity of 700 MW, consisting of two sets of 350MW coal-fired generation units, which commenced operation in May and June 2015, respectively. We hold 80% equity interest in this plant.

The coal supply for Luoyang Co-generation is obtained from Henan and Shaanxi. Luoyang Co-generation typically stores 120,000 tons of coal on site. In 2017, Luoyang Co-generation obtained 47.1% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Luoyang Co-generation in 2017 was RMB535.13 (2016: RMB434.9) per ton.

Luoyang Co-generation sells its electricity to Henan Electric Power Company.

Luoyang Yangguang Power Plant

Luoyang Yangguang Power Plant ("Luoyang Yangguang") is located at Luoyang City of Henan Province. The project has an installed capacity of 270 MW, consisting of two sets of 135 MW coal-fired generation units, which commenced operation in June and October 2006, respectively. We hold 80% equity interest in this plant.

Luoyang Yangguang sells its electricity to Henan Electric Power Company.

Mianchi Co-generation

Mianchi Co-generation Power Plant ("Mianchi Co-generation") is located in Mianchi City of Henan Province. The project has an installed capacity of 700 MW, consisting of two sets of 350MW coal-fired generation units, which commenced operation in December 2016. We hold 60% equity interest in this plant.

The coal supply for Mianchi Co-generation is obtained from Yima Coal Group which has mining operations in Henan, Qinghai, Shanxi, Tibet and Inner Mongolia. Mianchi Co-generation typically stores 20,000 tons of coal on site. In 2017, Mianchi Co-generation obtained 100% of its total consumption of coal from annual contracts. The average coal purchase price for Luoyang Co-generation Power Plant in 2017 was RMB413.22(2016: RMB450.00) per ton.

Mianchi Co-generation sells its electricity to Henan Electric Power Company.

Zhumadian Wind Power

Zhumadian Wind Power ("Zhumadian Wind Power") is located in Zhumadian City of Henan Province. The project has an installed capacity of 32 MW, consisting of sixteen 2MW wind turbines, which commenced operation in December 2016. We hold 90% equity interest in this plant.

Zhumadian Wind Power sells its electricity to Henan Electric Power Company.

Qinbei Dianchanghuichang Photovoltaic

Qinbei Dianchanghuichang 20MW Photovoltaic Power Plant ("Qinbei Dianchanghuichang Photovoltaic") is located in the city of Jiyuan of Henan Province. Qinbei Dianchanghuichang Photovoltaic commenced its operation in June 2017 and has an installed capacity of 20MW. We hold 60% equity interest in Qinbei Dianchanghuichang Photovoltaic.

Qinbei Dianchanghuichang Photovoltaic sells its electricity to Henan Electric Power Company.

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Power Plants and Projects in Jiangsu Province

Nantong Power Plant

Huaneng Nantong Power Plant ("Nantong Power Plant") is located in Nantong City. Nantong Power Plant, including Phase I, Phase II and Phase III, has an installed capacity of 2,454 MW and consists of two 352 MW, two 350 MW and one 1,050 MW coal-fired generating units which commenced operations in 1989, 1990 1999 and 2014. We hold 100% equity interest in Phase I and Phase II of Nantong Power Plant and 35% equity interest in Phase III of Nantong Power Plant.

The coal supply for Nantong Power Plant is obtained from several coal producers located mostly in Northern Shanxi Province. The coal is transported by rail from the mines to Qinhuangdao port and then shipped to the Nantong Power Plant. Nantong Power Plant typically stores 300,000 tons of coal on site.

In 2017, Nantong Power Plant obtained 45.5% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Nantong Power Plant in 2017 was RMB507.93 (2016: RMB418.91) per ton.

Nantong Power Plant sells its electricity to Jiangsu Electric Power Company.

Nanjing Power Plant

Huaneng Nanjing Power Plant ("Nanjing Power Plant") has an installed capacity of 640 MW consisting of two 320 MW coal-fired generating units which commenced operations in March and October 1994, respectively. We hold 100% equity interest in Nanjing Power Plant.

The coal supply for the Nanjing Power Plant is obtained from several coal producers located in the Shanxi and Anhui Provinces. The coal is transported by rail from the mines to Yuxikou Port and Pukou Port and shipped to the plant's own wharf facilities. The wharf is capable of handling 6,000 ton vessels. Nanjing Power Plant typically stores 120,000 tons of coal on site and consumes 5,000 tons of coal per day when operating at maximum generating capacity.

In 2017, Nanjing Power Plant obtained approximately 70.6% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Nanjing Power Plant in 2017 was RMB608.51 (2016: RMB469.51) per ton.

Nanjing Power Plant sells its electricity to Jiangsu Electric Power Company.

Taicang Power Plant

Huaneng Taicang Power Plant ("Taicang Power Plant") is located in the vicinity of Suzhou, Wuxi and Changzhou, which is the most affluent area in Jiangsu Province. Taicang Power Plant is an ancillary facility of the China-Singapore Suzhou Industrial Park. Taicang Power Plant Phase I consists of two 300 MW coal-fired generating units, which commenced operations in December 1999 and April 2000 respectively. Taicang Phase II Expansion consists of two 600 MW coal-fired generating units, which commenced operations in January and February 2006, respectively. In April 2008, the installed capacities of the four units of Taicang Power Plant were upgraded to 320 MW, 320 MW, 630 MW and 630 MW, respectively, which increased the total installed capacity of Taicang Power Plant to 1,900 MW. We hold 75% equity interest in Taicang Power Plant.

The coal supply for Taicang Power Plant is primarily from Shenhua in Inner Mongolia and Datong in Shanxi Province. Taicang Power Plant typically stores 350,000 tons of coal on site. In 2017, Taicang Power Plant obtained approximately 30.7% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Taicang Power Plant in 2017 was RMB497.05 (2016: RMB455.26) per ton.

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Taicang Power Plant sells its electricity to Jiangsu Electric Power Company.

Huaiyin Power Plant

Huaneng Huaiyin Power Plant ("Huaiyin Power Plant") is located in the Center of the Northern Jiangsu Power Grid. The plant's two 220 MW coal-fired generating units commenced operation in November 1993 and August 1994, respectively. In order to reduce energy consumption and increase capacity, one generating unit of Huaiyin Power Plant was upgraded in October 2001, which increased the maximum generating capacity of that unit to 220 MW. In 2002, upgrading of the second generating unit was completed, and the actual generating capacity of Huaiyin Power Plant is 440 MW. The other two 330 MW coal-fired generating units of Huaiyin Power Plant Phase II Expansion commenced operations in January and March 2005, respectively. Huaiyin Power Plant Phase III consists of two 330 MW coal-fired generating units, and which were put into operation in May and September 2006, respectively. We hold 100% equity interest in Phase I and 63.64% equity interest in Phase II and Phase III of Huaiyin Power Plant. Unit I and Unit II of Huaiyin Power Plant were shut down in December 2007 and January 2009, respectively.

The coal supply for the Huaiyin Power Plant is primarily from Anhui Province, Henan Province and Shanxi Province. Huaiyin Power Plant typically stores 180,000 tons of coal on site. In 2017, Huaiyin Power Plant obtained approximately 45.1% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Huaiyin Power Plant in 2017 was RMB591.79 (2016: RM460.77) per ton.

Huaiyin Power Plant sells its electricity to Jiangsu Electric Power Company.

Jinling Power Plant

Huaneng Nanjing Jinling Power Plant ("Jinling Power Plant") is located in Nanjing, Jiangsu. Jinling Power Plant (CCGT) consists of two 390 MW gas-fired generating units, which commenced operation in December 2006 and March 2007, respectively. We hold 60% equity interest in Jinling Power Plant (CCGT). The gas supply for Jinling Power Plant (CCGT) is transported through the pipeline of "West-East Gas Transport Project".

Jinling Power Plant (Coal-fired) consists of two 1,030 MW domestic ultra-supercritical coal-fired generating units, which commenced operation in December 2009 and August 2012, respectively. We hold 60% equity interest in Phase I and Phase II of Jinling Power Plant (Coal-fired). The coal supply for Jinling Power Plant (Coal-fired) is primarily from Shanxi Province and Inner Mongolia Autonomous Region. Jinling Power Plant (Coal-fired) typically stores 300,000 tons of coal on site. In 2017, Jinling Power Plant (Coal-fired) obtained approximately 44.1% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Jinling Power Plant (Coal-fired) in 2017 was RMB543.80 (2016: RMB447.20) per ton.

Jinling Power Plant sells its electricity to Jiangsu Electric Power Company.

Qidong Wind Power

Huaneng Qidong Wind Power Plant ("Qidong Wind Power") is located in Nantong City, Jiangsu. Qidong Wind Power Phase I has an installed capacity of 91.5 MW and commenced operation in March 2009. The first stage and second stage of the Phase II Project of Qidong Wind Power with a total generation capacity of 50 MW and 44 MW respectively commenced operation in January 2011 and June 2012, respectively. We hold 65% equity interest in Qidong Wind Power.

Qidong Wind Power Plant sells its electricity to Jiangsu Electric Power Company.

Jinling CCGT Co-generation

Jinling CCGT Co-generation is located in Nanjing, Jiangsu. The plant comprises of two 191 MW class (E grade) combined cycle gas turbine cogeneration units and the corresponding support facilities. The two units

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commenced operation in April 2013 and May 2013, respectively. We hold 51% equity interest in Jinling CCGT Co-generation. The gas supply for this plant is transported through the pipeline of "West-East Gas Transport Project".

Jinling CCGT Co-generation sells its electricity to Jiangsu Electric Power Company.

Rudong Wind Power

Rudong Wind Power Plant ("Rudong Wind Power") is located in Rudong, Jiangsu. Phase I of the plant has a total installed generation capacity of 48MW. It commenced operations in November 2013. We hold 90% equity interest in Rudong Wind Power.

Rudong Wind Power sells its electricity to Jiangsu Electric Power Company.

Tongshan Wind Power

Tongshan Wind Power Plant ("Tongshan Wind Power") is located in Tongshan, Jiangsu Province. Phase I of the plant has an installed capacity of 50 MW. It commenced operation in March 2016. The phase II commenced operation in December 2017, and has an installed capacity of 48MW, consisting of 24 wind turbines of 2WM each. We hold 70% equity interest in Tongshan Wind Power.

Tongshan Wind Power sells its electricity to Jiangsu Electric Power Company.

Suzhou Co-generation

Huaneng Suzhou Co-generation Power Plant ("Suzhou Co-generation") is located in Suzhou City in Jiangsu Province. Suzhou Co-generation has an installed capacity of 120 MW and consists of two 60 MW coal-fired generating units which commenced operation in 2006. We hold 53.45% equity interest in Suzhou Co-generation. We acquired the power plant in January, 2015 from Huaneng Group.

The coal supply for Suzhou Co-generation is obtained from Shanxi, Inner Mongolia and partially imported coal. Suzhou Co-generation typically stores 30,000 tons of coal on site. In 2017, Suzhou Co-generation obtained 45.5% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Suzhou Co-generation in 2017 was RMB551.67 (2016: RMB455.26) per ton.

Suzhou Co-generation sells its electricity to Jiangsu Electric Power Company.

Taicang Coal Pier Project

Suzhou Port Taicang Terminal Zone Huaneng Coal Pier ("Taicang Coal Pier Project") is located in Taicang, Suzhou. The Taicang Coal Pier Project has one berth of 100,000 dead weight tonnage ("DWT") and one berth of 50,000 DWT for coal discharging, four berths of 5,000 DWT each and six berths of 1,000 DWT each for coal loading. The above facilities have commenced trial operation in 2013. We hold 100% equity interest in this project.

Nanjing Chemical Industry Park Co-generation Power Plant

Nanjing Chemical Industry Park Co-generation Power Plant ("Nanjing Chemical Industry Park Co-Generation") is located in the city of Nanjing in Jiangsu Province. It has an installed capacity of 100MW consisting of two sets of extraction back-pressure turbines of 50 MW each, which commenced operation in April and December 2016, respectively. We hold 70% equity interest in Nanjing Chemical Industry Park Co-Generation Power Plant.

Nanjing Chemical Industry Park Co-generation typically stores 60,000 tons of coal on site. In 2017, Nanjing Co-generation obtained 85% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Nanjing Chemical Industry Park Co-generation in 2017 was RMB588.20 (2016: RMB490.80) per ton.

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Nanjing Chemical Industry Park Co-generation Power Plant sells its electricity to Jiangsu Electric Power Company.

Luhe Wind Power

Luhe Wind Power ("Luhe Wind Power") is located in Nanjing, Jiangsu. It has an installed capacity of 50 MW, consisting of 25 wind power turbines of 2 MW each, which commenced operation in December 2016. We hold 100% equity interest in Luhe Wind Power.

Luhe Wind Power sells its electricity to Jiangsu Electric Power Company.

Guanyun Co-generation Power

Guanyun Co-generation Power Plant ("Guanyun Co-generation Power") is located in the city of Lianyungang of Jiangsu Province, with an installed capacity of 50 MW consisting of two 25 MW coal-fired generating units which commenced operations in December 2017. We hold 100% equity interest in Guanyun Co-generation Power.

Guanyun Co-generation Power sells its electricity to Jiangsu Electric Power Company.

Suzhou CCGT

Suzhou Gas-fired Co-generation Power Plant ("Suzhou CCGT") is located in the city of Lianyungang of Jiangsu Province, with an installed capacity of 452 MW consisting of two  (E-class) combined cycle gas turbine cogeneration units which commenced operations in July and September 2017, respectively. We hold 100% equity interest in Suzhou CCGT.

Suzhou CCGT sells its electricity to Jiangsu Electric Power Company.

Rudong Offshore Wind Power

Rudong Offshore Wind Power ("Rudong Offshore Wind Power") is located in the county of Rudong, the city of Nantong of Jiangsu Province. It has an installed capacity of 302.4 MW, consisting of 38 wind power turbines of 4 MW each, 12 wind power turbines of 4.2 MW each, and 20 wind power turbines of 5 MW each, which commenced operation in March and September 2017. We hold 70% equity interest in Rudong Offshore Wind Power.

Rudong Offshore Wind Power sells its electricity to Jiangsu Electric Power Company.

Yizheng Wind Power

Yicheng Wind Power ("Yicheng Wind Power") is located in the city of Yizheng of Jiangsu Province. It has an installed capacity of 46.2 MW, consisting of 21 wind power turbines of 2.2 MW each, which commenced operation in December 2017. We hold 100% equity interest in Yizheng Wind Power.

Yizheng Wind Power sells its electricity to Jiangsu Electric Power Company.

Taicang Dianchanghuichang Photovoltaic

Taicang Dianchanghuichang 40MW Photovoltaic Power Plant ("Taicang Dianchanghuichang Photovoltaic") is located in the city of Taicang of Jiangsu Province. Taicang Dianchanghuichang Photovoltaic commenced its operation in April 2017 and has an installed capacity of 40MW. Taicang Dianchanghuichang Photovoltaic. This project is owned by Taicang Power Plant.

Taicang Dianchanghuichang Photovoltaic sells its electricity to Jiangsu Electric Power Company.

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Guanyun Photovoltaic

Guanyun 14.1MW Photovoltaic Power Plant ("Guanyun Photovoltaic") is located in the city of Lianyungang of Jiangsu Province. Guanyun Photovoltaic commenced its operation in June 2017 and has an installed capacity of 14.1MW. We hold 100% equity interest in Guanyun Photovoltaic.

Guanyun Photovoltaic sells its electricity to Jiangsu Electric Power Company.

Power Plants in Shanghai Municipality

Shidongkou I

Huaneng Shanghai Shidongkou First Power Plant ("Shidongkou I") is located in the northern region of the Shanghai Power Grid. The plant comprises four 325 MW coal-fired generating units, which commenced operation in February and December 1988, September 1989 and May 1990 respectively, and has a total installed capacity of 1,300 MW. The installed capacities of Unit II and Unit III were expanded from 300 MW to 325 MW in September 2007 and January 2008, respectively. The installed capacities of Unit I and Unit V were expanded from 300 MW and 320 MW to 325 MW and 325 MW in January 2010, respectively. We hold 100% equity interest in Shidongkou I.

The coal supply for Shidongkou I is primarily from Shanxi Province, Anhui Province and Henan Province. Shidongkou I Power Plant typically stores 150,000 tons of coal on site. In 2017, Shidongkou I obtained 25.7% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Shidongkou I in 2017 was RMB447.81 (2016: RMB318.58) per ton.

Shidongkou I sells its electricity to State Grid Shanghai Municipal Electric Power Company.

Shidongkou II

Huaneng Shanghai Shidongkou Second Power Plant ("Shidongkou II") is located in the northern suburbs of Shanghai. Shidongkou II has an installed capacity of 1,200 MW and consists of two 600 MW coal-fired super-critical units which commenced operations in June and December 1992, respectively. We hold 100% equity interest in Phase I of Shidongkou II. Phase II of Shidongkou II has an installed capacity of 1,320 MW and consists of two 660 MW coal-fired super-critical units which commenced operations in October 2011. We hold 50% equity interest in Phase II of Shidongkou II.

The coal supply for Shidongkou II is obtained from several coal producers located mostly in Northern Shanxi Province. The coal is transported by rail from the mines to Qinhuangdao port or Tianjin port and shipped to the plant's own wharf facilities. The wharf is capable of handling 35,000 ton vessels. Shidongkou II typically stores 180,000 tons of coal on site.

In 2017, Shidongkou II obtained 36.3% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Shidongkou II in 2017 was RMB471.49 (2016: RMB358.21) per ton.

Shidongkou II sells its electricity to State Grid Shanghai Municipal Electric Power Company.

Shanghai CCGT

Shanghai CCGT is located in Baoshan District of Shanghai Municipality. Shanghai CCGT consists of three 390 MW gas-fired combined-cycle generating units with a total installed capacity of 1,170 MW, which were put into operation in May, June and July 2006, respectively. We hold 70% equity interest in Shanghai CCGT.

The gas supply for Shanghai CCGT is transported through the pipeline of "West-East Gas Transport Project". Shanghai CCGT generates electricity during the peak load periods and sells its electricity to State Grid Shanghai Municipal Electric Power Company.

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Power Plant in Chongqing Municipality

Luohuang Power Plant

Huaneng Luohuang Power Plant ("Luohuang Power Plant") is located in Chongqing Municipality. Each of Phase I and Phase II of Luohuang Power Plant has an installed capacity of 720 MW and consists of two 360 MW coal-fired generating units. The two units in Phase I commenced operation in September 1991 and February 1992 respectively, and the two units in Phase II commenced operation in December 1998. Luohuang Power Plant Phase III consist of two 600 MW coal-fired generating units with an installed capacity of 1,200 MW, which were put into operation in December 2006 and January 2007, respectively. We hold 60% equity interest in Luohuang Power Plant.

The coal supply for Luohuang Power Plant is obtained from Chongqing Municipality. Luohuang Power Plant typically stores 450,000 tons of coal on site. In 2017, Luohuang Power Plant obtained 96.7% of its coal supplies from annual contracts and the remainder from the open market. The average coal purchase price for Luohuang Power Plant in 2017 was RMB584.09 (2016: RMB462.33) per ton.

Luohuang Power Plant sells its electricity to Chongqing Municipal Electric Power Company.

Liangjiang CCGT

Liangjiang CCGT is located in Chongqing Municipality. Two generating units of this plant commenced operation in October and December 2014, respectively, with an installed capacity of 934 MW. We hold 90% equity interest in Liangjiang CCGT. The gas supply for Liangjiang CCGT is transported through pipeline of "West-East Gas Transport Project."

Liangjing CCGT sells its electricity to State Grid Chongqing Municipal Electric Power Company.

Power Plants in Zhejiang Province

Yuhuan Power Plant

Huaneng Yuhuan Power Plant ("Yuhuan Power Plant") is located in Taizhou of Zhejiang Province. Yuhuan Power Plant Phase I consists of two 1,000 MW ultra-supercritical coal-fired generating units with a total installed capacity of 2,000 MW. Unit I and Unit II were put into operation in November 2006 and December 2006, respectively. Yuhuan Power Plant Phase II consists of two 1,000 MW ultra-supercritical coal-fired generating units with a total installed capacity of 2,000 MW, which commenced operations in November 2007. We hold 100% equity interest in Yuhuan Power Plant.

The coal supply for Yuhuan Power Plant is primarily obtained from Shanxi Province and Inner Mongolia Autonomous Region. Yuhuan Power Plant typically stores 500,000 tons of coal on site. In 2017, Yuhuan Power Plant obtained 53.6% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Yuhuan Power Plant in 2017 was RMB632.40 (2016: RMB475.90) per ton.

Yuhuan Power Plant sells its electricity to State Grid Zhejiang Electric Power Company.

Changxing "Replacing Small Units with Large Ones" Project

Changxing Power Plant "Replacing Small Units with Large Ones" Project ("Changxing Power Plant") is located in Changxing County of Zhejiang Province. Changxing "Replacing Small Units with Large Ones" Project commenced operation in December 2014, with an installed capacity of 1,320 MW. This is the first project of ultra-supercritical coal-fired generating units of the Company. We hold 100% equity interest in the project.

The coal supply for Changxing Power Plant is primarily obtained from Inner Mongolia, Hebei and partially imported coal. Changxing Power Plant typically stores 150,000 tons of coal on site. In 2017, Changxing Power Plant

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obtained 47.1% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Changxing Power Plant in 2017 was RMB602.20 (2016: RMB477.36) per ton.

Tongxiang CCGT

Tongxiang CCGT is located in Tongxiang City of  Zhejiang Province. The plant commenced operation in September 2014 with an installed capacity of 458.4 MW. We hold 95% equity interest in the Tongxiang CCGT. The gas supply for Tongxiang CCGT is transported through pipeline of "West-East Gas Transport Project."

Tongxiang CCGT sells its electricity to State Grid Zhejiang Electric Power Company.

Changxing Photovoltaic

Si'an 10MW Distributed Photovoltaic Power Project ("Changxing Photovoltaic") is located in Changxing County of Zhejiang Province. Part of the project commenced operation in December 2014, with an installed capacity of 5 MW. In March 2015, the rest of the project commenced operation in March 2015, with an installed capacity of 5 MW. We hold 100% equity interest in Changxing Photovoltaic.

Changxing Hongqiao Photovoltaic

Changxing Hongqiao PhotovoltaicPower Project ("Changxing Hongqiao Photovoltaic") is located in Changxing Country of Zhejiang Province. It commenced operation in September 2016, with an installed capacity of 30 MW. We hold 100% equity interest in this project.

Huzhou Distributed Photovoltaic

Huzhou Distributed PhotovoltaicPower Project ("Huzhou Distributed Photovoltaic") is located in the city of Huzhou of Zhejiang Province. It commenced operation in June and December 2017, with an installed capacity of 20 MW. We hold 100% equity interest in Huzhou Distributed Photovoltaic.

Huzhou Distributed Photovoltaic sells its electricity to Zhejiang Electric Power Company.

Power Plant in Hunan Province

Yueyang Power Plant

Huaneng Yueyang Power Plant ("Yueyang Power Plant") is located in Yueyang City of Hunan Province. Yueyang Power Plant Phase I has an installed capacity of 725 MW and consists of two 362.5 MW sub-critical coal-fired generating units which commenced operation in September and December 1991 respectively. Yueyang Power Plant Phase II consists of two 300MW coal-fired generating units with installed capacity of 600 MW, which were put into operation in March and May 2006, respectively. Huaneng Yueyang Power Plant Phase III ("Yueyang Power Plant Phase III") consists of two 600 MW generating units with a total installed capacity of 1,200 MW. In January 2011 and August 2012, Unit 5 and Unit 6 of Yueyang Power Plant Phase III, two 600MW coal-fired generating units, commenced operation, respectively. We hold 55% equity interest in Yueyang Power Plant.

The coal supply for Yueyang Power Plant is obtained from Datong in Shanxi Province. Yueyang Power Plant typically stores 500,000 tons of coal on site. In 2017, Yueyang Power Plant obtained 50.2% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Yueyang Power Plant in 2017 was RMB642.12 (2016: RMB485.68) per ton.

Yueyang Power Plant sells its electricity to State Grid Hunan Electric Power Company.

Xiangqi Hydropower

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Huaneng Yongzhou Xiangqi Hydropower Station ("Xiangqi Hydropower") is located in Xiangqi County of Hunan Province. Xiangqi Hydropower consists of four 20 MW hydraulic generating units with a total installed capacity of 80 MW. In December 2011, Unit I of Xiangqi Hydropower with an installed capacity of 20 MW passed a trial run. Unit I and Unit II of Yongzhou Xiangqi Hydropower with an installed capacity of 20 MW each commenced operation in December 2011 and May 2012, respectively. Unit III and Unit IV of Xiangqi Hydropower with an installed capacity of 20 MW commenced operation in May and August 2012, respectively. We hold 100% equity interest in Xiangqi Hydropower.

Xiangqi Hydropower sells its electricity to Hunan Electric Power Company.

Subaoding Wind Power

Subaoding Wind Power ("Subaoding Wind Power") is located between Hongjiang City and Dongkou County in Hunan. Part of the Subaoding Wind Power commenced operation in December 2014, with an installed capacity of 80MW, consisting of 40 wind power turbines of 2 MW. The rest of the Subaoding Wind Power commenced operation in March 2015, with an installed capacity of 70 MW, consisting of 35 wind power turbine of 2 MW each. As of the date of this report, all of the wind power turbines have commenced operation with a total installed capacity of 150 MW. We hold 100% equity interest in the Subaoding Wind Power.

Subaoding Wind Power sells its electricity to Hunan Electric Power Company.

Guidong Wind Power

Guidong Wind Power ("Guidong Wind Power") is located at Guidong County of Hunan Province. Guidong Wind Power commenced operation in 2015, with an installed capacity of 84 MW, consisting of 42 wind power turbines of 2 MW each. We hold 100% equity interest in this plant.

Guidong Wind Power sells its electricity to Hunan Electric Power Company.

Yueyang Xingang Photovoltaic

Yueyang Xingang 10MW Distributed Photovoltaic Power Project ("Yueyang Xingang Photovoltaic") is located in the city of Yueyang of Hunan Province. Yueyang Xingang Photovoltaic commenced operation in May 2017, with an installed capacity of 10 MW. We hold 60% equity interest in Yueyang Xingang Photovoltaic.

Yueyang Xingang Photovoltaic sells its electricity to Hunan Electric Power Company.

Yueyang Leigutai Photovoltaic

Yueyang Leigutai 20MW Distributed Photovoltaic Power Project ("Yueyang Leigutai Photovoltaic") is located in the city of Yueyang of Hunan Province. Yueyang Liangang Photovoltaic commenced operation in June 2017, with an installed capacity of 20 MW. We hold 55% equity interest in Yueyang Leigutai Photovoltaic.

Yueyang Leigutai Photovoltaic sells its electricity to Hunan Electric Power Company.

Power Plant in Hubei Province

Enshi Maweigou Hydropower

Hubei Enshi Maweigou Hydropower Station ("Enshi Maweigou Hydropower") is located in Enshi City of Hubei Province. We entered into an equity transfer agreement to acquire Enshi Maweigou Hydropower on September 30, 2011. Enshi Maweigou Hydropower consists of three 5 MW hydraulic generating units and two 20 MW hydraulic generating units with a total installed capacity of 55 MW. We hold 100% equity interest in Enshi Maweigou Hydropower.

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Enshi Maweigou Hydropower sells its electricity to Hubei Electric Power Company.

Wuhan Power Plant

Huaneng Wuhan Power Plant ("Wuhan Power Plant") is located in Wuhan City in Hubei Province. Wuhan Power Plant has an installed capacity of 2,460 MW and consists of two 300 MW coal-fired generating units which commenced operation in 1993 and 1994, two 330 MW coal-fired generating units which commenced operation in 1997, and two 600 MW coal-fired generating units which commenced operation in 2006. We hold 75% equity interest in Wuhan Power Plant. We acquired the power plant in January, 2015 from Huaneng Group.

Wuhan Power Plant sells its electricity to Hubei Electric Power Company.

Dalongtan Hydropower

Huaneng Dalongtan Hydropower Station ("Dalongtan Hydropower") is located in Enshi City of Hubei Province. Dalongtan Hydropower has an installed capacity of 37.6 MW. We hold 97% equity interest in Dalongtan Hydropower. We acquired the power plant in January, 2015 from Huaneng Group.

Dalongtan Hydropower sells its electricity to Hubei Electric Power Company.

Jingmen Co-generation

Huaneng Jingmen Co-generation Power Plant ("Jingmen Co-generation" or "Jingmen Thermal Power") is located in Jingmen City in Hubei Province. Jingmen Co-generation has an installed capacity of 700 MW and consists of two 350 MW coal-fired generating units which commenced operation in 2014. We hold 100% equity interest in Jingmen Co-generation. We acquired the power plant in January, 2015 from HIPDC.

The coal supply for Jingmen Co-generation is obtained from Shaanxi and Gansu. Jingmen Co-generation typically stores 90,000 tons of coal on site. In 2017, Jingmen Co-generation obtained 72.1% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Jingmen Co-generation in 2017 was RMB615.65 (2016: RMB464.31) per ton.

Jingmen Co-generation sells its electricity to Hubei Electric Power Company.

Yingcheng Co-generation

Huaneng Yingcheng Co-generation Power Plant ("Yingcheng Co-generation") is located in Yingcheng City in Hubei Province. Unit II of Yingcheng Co-generation has an installed capacity of 350 MW which commenced operation in January 2015. Unit I of Yingcheng Co-generation has an installed capacity of 50 MW, which commenced operation in June 2016. We hold 100% equity interest in Yingcheng Co-generation. We acquired the power plant in January, 2015 from HIPDC.

The coal supply for Yingcheng Co-generation is obtained from Shanxi and Shaanxi.Yingcheng Co-generation typically stores 50,000 tons of coal on site. In 2017, Yingcheng Co-generation obtained 17.3% of its total consumption of coal from the open market. The average coal purchase price for Yingcheng Co-generation in 2017 was RMB722.85 (2016: RMB632.52) per ton.

Yingcheng Co-generation sells its electricity to Hubei Electric Power Company.

Jieshan Wind Power

Jieshan Wind Power Plant ("Jieshan Wind Power") is located at Suixian County of Hubei Province. The Phase I of Jieshan Wind Power commenced operation in June 2015, with an installed capacity of 48 MW, consisting of 24 wind power turbines of 2 MW. Phase II of Jieshan Wind Power commenced operation in August 2016, with an

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installed capacity of 72 MW, consisting of 36 wind power turbines of 2 MW. We hold 100% equity interest in the Jieshan Wind Power.

Jieshan Wind Power sells its electricity to Hubei Electric Power Company.

Zhongxiang Hujiawan Wind Power

Zhongxiang Hujiawan Wind Power ("Zhongxiang Hujiawan Wind Power") is located in the city of Jingmen of Hubei Province. Zhongxiang Hujiawan Wind Power commenced operation in December 2017, with an installed capacity of 24 MW, consisting of 12 wind power turbines of 2 MW each. We hold 100% equity interest in this plant.

Zhongxiang Hujiawan Wind Power sells its electricity to Hubei Electric Power Company.

Suizhou Zengdufuhe Photovoltaic

Suizhou Zengdufuhe 20MW Photovoltaic Power Project ("Suizhou Zengdufuhe Photovoltaic") is located in the city of Suizhou of Hubei Province. Suizhou Zengdufuhe Photovoltaic commenced operation in September and December 2017, with an installed capacity of 20 MW. We hold 100% equity interest in Suizhou Zengdufuhe Photovoltaic.

Suizhou Zengdufuhe Photovoltaic sells its electricity to Hubei Electric Power Company.

Power Plant in Jiangxi Province

Jinggangshan Power Plant

Huaneng Jinggangshan Power Plant ("Jinggangshan Power Plant") is located in Ji'an City of Jiangxi Province. Jinggangshan Power Plant has an installed capacity of 1,920 MW and consists of two 300 MW coal-fired generating units which commenced operation in December 2000 and August 2001 respectively, and two 660 MW generating units which commenced operation in November and December 2009, respectively. We hold 100% equity interest in Jinggangshan Power Plant.

The coal supply for Jinggangshan Power Plant is obtained from Henan Province, Anhui Province and Jiangxi Province. Jinggangshan Power Plant typically stores 255,000 tons of coal on site. In 2017, Jinggangshan Power Plant obtained 47.2% of its total coal consumption from annual contracts and the remainder from the open market. The average coal purchase price for Jinggangshan Power Plant in 2017 was RMB730.52 (2016: RMB544.48) per ton.

Jinggangshan Power Plant sells its electricity to Jiangxi Electric Power Company.

Jianggongling Wind Power

Jianggongling Wind Power Plant ("Jiangongling Wind Power") is located in Jiujiang Municipality of Jiangxi Province. Jianggongling Wind Power commenced operation in December 2014 (Phase I), with an installed capacity of 48 MW, consisting of 24 wind power turbine of 2 MW, and in December 206 (Phase II), with an installed capacity of 26 MW, consisting of 13 wind power turbines of 2 MW. We hold 100% equity interest in the Jianggongling Wind Power.

Ruijin Power Plant

Huaneng Ruijin Power Plant ("Ruijin Power Plant") is located in Ruijin City in Jiangxi Province. Ruijin Power Plant has an installed capacity of 700 MW and consists of two 350 MW coal-fired generating units which commenced operation in 2008. We hold 100% equity interest in Ruijin Power Plant. We acquired the power plant in January, 2015 from HIPDC.

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The coal supply for Ruijin Power Plant is obtained from Shanxi, Shaanxi, and partially imported coal. Ruijin Power Plant typically stores 110,000 tons of coal on site. In 2017, Ruijin Power Plant obtained 33.7% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Ruijin Power Plant in 2017 was RMB713.93 (2016: RMB509.45) per ton.

Ruijin Power Plant sells its electricity to Jiangxi Electric Power Company.

Anyuan Power Plant

Anyuan Power Plant "Replacing Small Units with Large Ones" Project ("Anyuan Power Plant") is located at Pingxiang City of Jiangxi Province. The plant has a total installed capacity of 1,320 MW, consisting of two ultra supercritical units with second reheat cycle of 660 MW each. Anyuan Power Plant is the first project equipped with 660MW ultra supercritical unit with second reheat cycle. We acquired 100% equity interest in the power plant in January 2015.

The coal supply for Anyuan Power Plant is obtained from Gansu and Shanxi. Ruijin Power Plant typically stores 130,000 tons of coal on site. In 2017, Anyuan Power Plant obtained 46.4% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Ruijin Power Plant in 2017 was RMB665.70 (2016: RMB546.50) per ton.

Anyuan Power Plant sells its electricity to Jiangxi Electric Power Company.

Linghuashan Wind Power

Linghuashan Wind Power Plant ("Linghuashan Wind Power") is located in the city of Ji'an of Jiangxi Province. Linghuashan Wind Power has a total installed capacity of 100 MW, consisting of 50 turbines of 2MW each, which commenced operation in June and September 2017. We hold 100% equity interest in Linghuashan Wind Power.

Linghuashan Wind Power sells its electricity to Jiangxi Electric Power Company.

Power Plant in Anhui Province

Chaohu Power Plant

Huaneng Chaohu Power Plant (" Chaohu Power Plant") is located in Chaohu City in Anhui Province. Chaohu Power Plant has an installed capacity of 1,200 MW and consists of two 600 MW coal-fired generating units which commenced operation in 2008. We hold 60% equity interest in Chaohu Power Plant. We acquired the power plant in January, 2015 from HIPDC.

The coal supply for Chaohu Power Plant is obtained from Shandong and Gansu. Chaohu Power Plant typically stores 110,000 tons of coal on site. In 2017, Chaohu Power Plant obtained 86.8% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Chaohu Power Plant in 2017 was RMB617.03 (2016: RMB479.80) per ton.

Chaohu Power Plant sells its electricity to Anhui Electric Power Company.

Hualiangting Hydropower

Huaneng Hualiangting Hydropower Plant ("Hualiangting Hydropower") is located in Anqing City in Anhui Province. Hualiangting Hydropower has an installed capacity of 40 MW which commenced operation in 1981 and 1987. We hold 100% equity interest in Hualiangting Hydropower. We acquired the power plant in January, 2015 from Huaneng Group.

Hualiangting Hydropower sells its electricity to Anhui Electric Power Company.

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Huaining Shijing Wind Power

Shijing Wind Power Plant in Huaining Country ("Huaining Wind Power") is located in Huaining Country, Anhui Province. Huaining Wind Power has a total installed capacity of 50 MW, consisting of 25 turbines of 2MW each, which commenced operation in June 2016. We hold 100% equity interest in the plant.

Huaining Wind Power sells its electricity to Anhui Electric Power Company.

Huaining Longchi Wind Power

Huaining Longchi Wind Power Plant ("Huaining Longchi Wind Power") is located in the city of the county of Huaining of Anhui Province. Huaining Longchi Wind Power has a total installed capacity of 99 MW, consisting of 45 turbines of 2.2MW each. We hold 100% equity interest in Huaining Longchi Wind Power.

Huaining Longchi Wind Power sells its electricity to Anhui Electric Power Company.

Power Plant in Fujian Province

Fuzhou Power Plant

Huaneng Fuzhou Power Plant ("Fuzhou Power Plant") is located on the south bank of the Min River, southeast of the city of Fuzhou. Fuzhou Power Plant has been developed in three phases. The Fuzhou Power Plant Phase I and Phase II utilize four 350 MW coal-fired generating units with an installed capacity of 1,400 MW, and commenced operations in 1988 and 1999, respectively. The Fuzhou Power Plant Phase III consists of two 600 MW generating units with a total installed capacity of 1,200 MW, and commenced operations in 2010 and 2011, respectively. The capacity of Unit V and Unit VI of the Fuzhou Power Plant Phase III was expanded to 660 MW per unit since January 2012. We hold 100% equity interest in Fuzhou Power Plant.

The coal supply for Fuzhou Power Plant is obtained from several coal producers located mostly in Northern Shanxi Province. The coal is transported by rail from the mines to Qinhuangdao port and by ship down to the east coast of China and up to the Min River to a wharf located at Fuzhou Power Plant. We own and maintain the wharf, which is capable of handling vessels of up to 20,000 tons and of unloading 10,000 tons to 15,000 tons of coal per day. Fuzhou Power Plant typically stores 180,000 tons of coal on site.

In 2017, the Fuzhou Power Plant obtained 34.9% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Fuzhou Power Plant in 2017 was RMB561.28 (2016: RMB394.11) per ton.

Fuzhou Power Plant sells its electricity to Fujian Electricity Power Company.

Changle Photovoltaic

Changle 10 MW Photovoltaic Power Plant ("Changle Photovoltaic") is located in the city of Fuzhou of Fujian Province.  It has an installed capacity of 10 MW, which commenced operation in June 2017. We hold 100% equity interest in Changle Photovoltaic.

Changle Photovoltaic sells its electricity to Fujian Electric Power Company.

Power Plants in Guangdong Province

Shantou Power Plant

Huaneng Shantou Coal-Fired Power Plant ("Shantou Power Plant") had originally been developed and constructed by HIPDC which transferred all its rights and interests therein to us effective on December 31, 1994. Located on the outskirts of the city of Shantou, Shantou Power Plant was set up with the support of the Shantou

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municipal government and the Guangdong provincial government. Shantou Power Plant Phase I consists of two 300 MW coal-fired generating units with boilers, which commenced operation in January 1997. Shantou Power Plant Phase II consists of one 600 MW coal-fired generating unit and commenced operation in October 2005. We hold 100% equity interest in Shantou Power Plant.

The coal supply for Shantou Power Plant is obtained from several coal producers located mostly in the northern area of Shanxi Province. The coal is transported by rail from the mines to Qinhuangdao port and by ship down the east coast of China to the wharf located at Shantou Power Plant, which is maintained by the Shantou Port Authority and is capable of handling 35,000 ton vessels. The Shantou Power Plant typically stores 300,000 tons of coal on site.

In 2017, the Shantou Power Plant obtained 24.8% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Shantou Power Plant in 2017 was RMB585.02 (2016: RMB444.61) per ton.

Shantou Power Plant sells its electricity to Guangdong Electric Power Company.

Haimen Power Plant

Huaneng Haimen Power Plant is located in Shantou City, Guangdong Province. Haimen Power Plant has an installed capacity of 4,144 MW and consists of four 1,036 MW generating units. The first two generating units ("Haimen") commenced operation in July 2009 and October 2009, respectively. We hold 100% equity interest in the first two generating units. The other two generation units commenced operation at the beginning of 2013 ("Haimen Power"). We hold 80% equity interest in the other two generating units.

The coal supply for Haimen Power Plant is mainly imported from Indonesia. Haimen Power Plant typically stores 400,000 tons of coal on site. In 2017, Haimen Power Plant obtained 49.5% of its total consumption of coal from the open market. The average coal purchase price for Haimen Power Plant in 2017 was RMB611.14 (2016: RMB476.75) per ton.

Haimen Power Plant sells its electricity to Guangdong Electric Power Company.

Shantou Photovoltaic

Shantou Power Plant 17 MW Photovoltaic Power Plant ("Shantou Photovoltaic") is located in Shantou City, Guangdong Province.  It has an installed capacity of 17 MW, which commenced operation in September 2016. We hold 100% equity interest in the Project.

Shantou Photovoltaic sells its electricity to Guangdong Electric Power Company.

Power Plants in Yunnan Province

Diandong Energy

Yunnan Diandong Energy Limited Company ("Diandong Energy") is located in Qujing City, Yunnan Province. Diandong Energy has an installed capacity of 2,400 MW and consists of four 600 MW generating units which commenced operation in February 2006, July 2006, November 2006 and May 2007, respectively. We hold 100% equity interest in Diandong Energy.

The coal supply for Diandong Energy is mainly obtained from Yunnan and Guizhou Provinces. Diandong Energy typically stores 1,200,000 tons of coal on site. In 2017, Diandong Energy obtained none of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price for Diandong Energy in 2017 was RMB583.82 (2016: RMB342.39) per ton.

Diandong Energy sells its electricity to Yunnan Electric Power Company.

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Yuwang Energy

Yunnan Diandong Yuwang Energy Limited Company ("Yuwang Energy") is located in Qujing City, Yunnan Province. Yuwang Energy has an installed capacity of 1,200 MW and consists of two 600 MW generating units which commenced operation in July 2009 and February 2010, respectively. We hold 100% equity interest in Yuwang Energy.

The coal supply for Yuwang Energy is mainly obtained from Yunnan and Guizhou Provinces. Yuwang Energy typically stores 600,000 tons of coal on site. In 2017, Yuwang Energy obtained 100% of its total consumption of coal from the open market. The average coal purchase price of coal for Yuwang Energy in 2017 was RMB455.69 (2016: RMB380.58) per ton.

Yuwang Energy sells its electricity to Yunnan Electric Power Company.

Fuyuan Wind Power

Fuyuan Wind Power Plant ("Fuyuan Wind Power") is located in the Fuyuan County of Qujing Municipality of Yunnan Province. Fuyuan Wind Power consists of Wenbishan Wind Power, which commenced operation in November 2014 with 20 wind power turbines of 2 MW each, Yibasan Wind Power, which commenced operation in 2014 with 24 wind power turbines of 2 MW each, and Shengjing Wind Power, which commenced operation in December 2016 with 24 wind power turbines of 2 MW each. A new project with an installed capacity of 48 MW commenced operation in October and November 2017, consisting of 24 wind power turbines of 2 MW each. We hold 100% equity interest in Fuyuan Wind Power.

Fuyuan Wind Power sells its electricity to Yunnan Electric Power Company.

Power Plants in Hainan Province

Haikou Power Plant

Huaneng Haikou Power Plant ("Haikou Power Plant") is located in Haikou City in Hainan Province. Haikou Power Plant has an installed capacity of 936 MW and consists of two 138 MW coal-fired generating units which commenced operation in 1999, 2000, and two 330 MW coal-fired generating units which commenced operation in 2006. We hold 91.8% equity interest in Haikou Power Plant. We acquired the power plant in January, 2015 from Huaneng Group.

The coal supply for Haikou Power Plant is mainly obtained from Inner Mongolia, Shanxi, and partially imported coal. Haikou Power Plant typically stores 120,000 tons of coal on site. In 2017, Haikou Power Plant obtained 38.6% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price of coal for Haikou Power Plant in 2017 was RMB498.76 (2016: RMB393.68) per ton.

Haikou Power Plant sells its electricity to Hainan Electric Power Company.

Dongfang Power Plant

Huaneng Dongfang Power Plant ("Dongfang Power Plant") is located in Dongfang City in Hainan Province. Dongfang Power Plant has an installed capacity of 1,400 MW and consists of four 350 MW coal-fired generating units which commenced operation in 2009, 2012. We hold 91.8% equity interest in Dongfang Power Plant. We acquired the power plant in January, 2015 from Huaneng Group.

The coal supply for Dongfang Power Plant is mainly obtained from Shanxi and partially imported coal. Dongfang Power Plant typically stores 160,000 tons of coal on site. In 2017, Dongfang Power Plant obtained 9.9% of its total consumption of coal from annual contracts and the remainder from the open market. The average coal purchase price of coal for Dongfang Power Plant in 2017 was RMB502.22 (2016: RMB385.97) per ton.

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Dongfang Power Plant sells its electricity to Hainan Electric Power Company.

Nanshan Co-generation

Huaneng Nanshan Co-generation Power Plant ("Nanshan Co-generation") is located in Sanya City in Hainan Province. Nanshan Co-generation has an installed capacity of 132 MW which commenced operation in 2003. We hold 91.8% equity interest in Nanshan Co-generation. We acquired the power plant in January 2015 from Huaneng Group.

Nanshan Co-generation sells its electricity to Hainan Electric Power Company.

Gezhen Hydropower Plant

Huaneng Gezhen Hydropower Plant ("Gezhen Hydropower Plant") is located in Dongfang City in Hainan Province. Gezhen Hydropower Plant has an installed capacity of 82 MW which commenced operation in 2009. We hold 91.8% equity interest in Gezhen Hydropower Plant. We acquired the power plant in January, 2015 from Huaneng Group.

Gezhen Hydropower Plant sells its electricity to Hainan Electric Power Company.

Wenchang Wind Power

Huaneng Wenchang Wind Power Plant ("Wenchang Wind Power") is located in Wenchang City in Hainan Province. Wenchang Wind Power has an installed capacity of 51.5 MW and consists of 33 turbines with each capacity of 1.5 MW which commenced operation in 2008, and one turbine with a capacity of 2 MW which commenced operation in 2015. We hold 91.8% equity interest in Wenchang Wind Power. We acquired the power plant in January, 2015 from Huaneng Group.

Wenchang Wind Power sells its electricity to Hainan Electric Power Company.

Dongfang Photovoltaic

Dongfang Photovoltaic Power Plant ("Dongfang Photovoltaic") is located in Dongfang City in Hainan Province. Dongfang Photovoltaic has an installed capacity of 12 MW which commenced operation in July 2016. We hold 91.8% equity interest in Dongfang Power Plant.

Dongfang Photovoltaic sells its electricity to Hainan Electric Power Company.

Chengmai Photovoltaic

Chengmai Photovoltaic Power Plant ("Chengmai Photovoltaic") is located in the county of Chengmai of Hainan Province. Chengmai Photovoltaic has an installed capacity of 25 MW which commenced operation in June and September 2017. We hold 91.8% equity interest in Chengmai Photovoltaic.

Chengmai Photovoltaic sells its electricity to Hainan Electric Power Company.

Power Plant  in Guangxi Autonomous Region

Guilin Distributed Energy

Guilin Distributed Energy Power Plant ("Guilin Distributed Energy") is located in the city of Guilin of Guangxi Autonomous Region. Guilin Distributed Energy has an installed capacity of 210 MW which commenced operation in December 2017. We hold 80% equity interest in Guilin Distributed Energy.

Guilin Distributed Energy sells its electricity to Hainan Electric Power Company.

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Power Plant in Guizhou

Panxian Wind Power

Panxian Wind Power ("Panxian Wind Power") is located at Panxian county of Guizhou Province. It commenced operation in December 2015, with an installed capacity of 24 MW, consisting of 12 wind power turbine of 2 MW each. We hold 100 % equity interest in Panxian Wind Power.

Panxian Wind Power sells its electricity to Guizhou Electric Power Company.

Panxian Dapashan Wind Power

Panxian Dapashan Wind Power Plant ("Panxian Dapashan Wind Power") is located in the county of Pan of Guizhou Province. Panxian Dapashan Wind Power has an installed capacity of 24 MW and consists of 12 turbines with each capacity of 2 MW which commenced operation in November and December 2017. We hold 100% equity interest in Panxian Dapashan Wind Power.

Panxian Dapashan Wind Power sells its electricity to Guizhou Electric Power Company.

Panxian Jiaoziding Wind Power

Panxian Jiaoziding Wind Power Plant ("Panxian Jiaoziding Wind Power") is located in the county of Pan of Guizhou Province. Panxian Jiaoziding Wind Power has an installed capacity of 48 MW and consists of 24 turbines with each capacity of 2 MW which commenced operation in November and December 2017. We hold 100% equity interest in Panxian Jiaoziding Wind Power.

Panxian Jiaoziding Wind Power sells its electricity to Guizhou Electric Power Company.

Power Plant in Ningxia

Ruyi Helan Rooftop Photovoltaic

Ruyi Helan Rooftop Photovoltaic Power Plant ("Ruyi Helan Rooftop Photovoltaic") is located in the county of Helan of Ningxia Autonomous Region. Ruyi Helan Rooftop Photovoltaic has an installed capacity of 19.8 MW which commenced operation in June 2017. We hold 40% equity interest in Ruyi Helan Rooftop Photovoltaic.

Ruyi Helan Rooftop Photovoltaic sells its electricity to Ningxia Electric Power Company.

Power Plant in Singapore

Tuas Power

With a licensed generating capacity of 2,670MW, Tuas Power is one of the three largest power generation companies in Singapore. It currently has an installed operation generating capacity of 2,609MW, comprising of  1,876 MW gas-fired combined cycle generating units, 133 MW of coal-biomass fired steam turbine generating units and 600 MW of oil-fired steam generating unit.

Supply of coal is procured from coal producers in Indonesia via two long-term coal supply contracts with 10 years and 15 years term respectively, and short-term contracts. Supply of gas is obtained from Pavilion Gas Pte Ltd, Sembcorp Gas Pte Ltd and Shell Gas Marketing Pte Ltd (formally known as BG Singapore Gas Marketing Pte Ltd). Oil supply, if required, is obtained through the spot market.

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Competition and Dispatch

All power plants in China are subject to dispatch conducted by various dispatch centers. A dispatch center is required to dispatch electricity pursuant to the Regulations on the Administration of Electric Power Dispatch Networks and Grids, issued by the State Council with effect from November 1, 1993, and in accordance with its agreements with power plants subject to its dispatch. Power generation companies are also required to enter into on-grid dispatch agreements with power grid companies. As a result, there is competition for favorable dispatch treatment in the PRC electric power industry, especially during the off-peak load periods. More efficient power plants usually operate at higher output than less efficient power plants. We believe that in order to increase system stability, large and efficient power plants such as ours will be preferred as base load plants to generate power for the grids to which they connect. We believe that our dispatch arrangements with the local power corporations and dispatch centers, superior quality equipment, lower coal consumption rate, higher efficiency of plant operation, lower emission levels and larger capacity represent competitive advantages in the markets in which we operate.

Since 2002, we have been facing competition from four other major power generation groups: China Power Investment Corporation, China Huadian Power Corporation, China Guodian Power Corporation and China Datang Power Corporation, which were created following the break-up of the former State Electric Corporation in 2002. Although we were not affected by this reform measure, as we have developed good working relationship with the dispatch centers and the relevant government departments in the areas where our power plants are located, there can be no assurance that such good working relationships will not be adversely affected as more power generation companies compete for favorable dispatch treatment.

As power generation companies were separated from power grid companies and more competitors entered into the market, the SERC issued the Interim Measures Regarding Promotion of Openness, Fairness and Equitableness of Power Dispatch, requiring power dispatch centers to treat all competitors indiscriminately in respect of dispatch administration and information disclosure, except in cases where safe and stable operation of the electric power system requires different treatment.

In 2008, with the purpose of improving energy usage efficiency, the government implemented an electricity-optimized dispatch policy in Henan Province, Sichuan Province, Jiangsu Province, Guangdong Province and Guizhou Province on a pilot basis, and plans to roll out to others if the trial operation is successful. In addition, as of December 31, 2014, in all regions in which we operate power plants, the government's power administrative departments make power generation plan policies with the aim to improve the planned utilization hours of the environment-protecting and energy-saving units. In 2015, the NDRC and China Energy Administration jointly issued the Guidelines on Improving Electric Power Operations and Deepening Clean Energy Generation, which confirms a system that aims to ensure the full-priced acquisitions of renewable energy and ensure that the hours of usage for high-efficiency energy-saving generators be significantly higher than that for coal-fired generators. The Guidelines also demand, within a certain time period, an increase of the hours of usage for coal-fired generators, of which the emission level is close to or reaches the cap level of gas turbine.

In 2016, China National Energy Administration issued Guidelines on Improving Clean Energy Consumption and Distribution in Northern China, Notice on Issuing the Measures for the Administration of the Guaranteed Buyout of Electricity Generated by Renewable Energy Resources, Pilot Program of Local Clean Energy Consumption and Distribution in Gansu, Inner Mongolia and Jilin, and Provisionary Measures for Priority Dispatch of Renewable Peaking Power Generation Units, which require an improvement on clean energy consumption and distribution.  For the purposes of enhancing the dispatch priority of energy that is produced with high-efficient and low emission, China National Energy Administration also requested for comments in connection with the proposed Measures for the Administration of the Guaranteed Buyout of Electricity Generated by Nuclear Power, Guidance on High-efficiency, Low Emission Energy, Guidelines on Prioritizing Utilization and Dispatching and the Announcement on the Orderly Reform on Power Generation and Consumption Planning.

In 2017, NTDC and NEA issued Circular on Orderly Opening Up the Electricity Generation and Consumption Plans, Pilot Rules on Inter-regional Spare Renewable Energy Electricity Power Stock Trading, Circular on the Establishment of Pilot Electricity Power Stock Exchange,  Circular on Promoting Hydropower Consumption in Southwest China, and Solutions to Abandoning Hydro, Wind and Solar Energy, to promote the development of the power stock exchange and renewable power consumption.

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Competition and Dispatch in Singapore

Following the introduction of LNG into Singapore, new players as well as incumbents have invested in new gas-fired generating capacities to compete in the Singapore electricity market. Tuas Power competes in the NEMS using its portfolio of gas-fired, coal-biomass fired and oil-fired generating units. It was able to maintain a market share of approximately 21.9% in the NEMS for 2017. Its major competitors include Senoko Energy (formerly Senoko Power) which is owned by a Japanese/French consortium led by Marubeni Group, YTL PowerSeraya that is owned by YTL Group of Malaysia, SembCorp Cogen and Keppel Merlimau Cogen and PacificLight Power Pte Ltd. A new entrant, Tuaspring, entered the market in 2015.  In 2017, ExxonMobil and Singapore Refining Company introduced additional capacity of 158MW.  Tuas Power's portfolio of generating units allows it to maintain its leadership position in Singapore's power industry.

In the NEMS, power generation companies compete to generate and sell electricity every half-hour by offering their capacity (specifying price/quantity pairs). The EMC, the operator of Singapore's wholesale electricity market, determines the least-cost dispatch quantities and the corresponding market-clearing or spot prices based on the offers made by power generation companies. The spot prices in the NEMS reflect the least-cost market solution for the dispatch of energy and provision of operating reserves. In general, this means that each power generation company that submitted an offer below the spot price will be dispatched, and a power generation company that submitted an offer above the spot price will not be dispatched. The spot price that a power generation company receives is a nodal price, which may vary according to their location on the network to reflect the cost of transmission losses or network constraints.

Environmental Regulation

We are subject to the PRC Environmental Protection Law, the regulations of the State Council issued thereunder, the PRC Law on the Prevention and Treatment of Water Pollution, the PRC Law on the Prevention and Treatment of Air Pollution, the Emission Standard of Air Pollutants for Thermal Power Plants thereunder and the PRC Law on Ocean Environment Protection (collectively the "National Environmental Laws") and the environmental rules promulgated by the Local Governments in whose jurisdictions our various power plants are located (the "Local Environmental Rules"). According to the National Environmental Laws, the State Environmental Protection Bureau sets national environmental protection standards and local environmental protection bureaus may set stricter local standards. Enterprises are required to comply with the stricter of the two standards.

At present, new projects are subject to the environmental evaluation approval. The project proposal is required to be submitted to the Ministry of Environmental Protection of PRC for approval.

Effective July 1, 2003, all power plants in China became subject to the pollutant discharge levy system, pursuant to which discharge fees are levied based on the actual amount of pollutants discharged. As a result, all of our power plants are now required to pay discharge fees in such manner. Since 2008, certain provinces have raised the rates of waste disposal fees. In 2015, 2016 and 2017, we paid to the local governments total discharge fees of approximately RMB311 million RMB372 million and RMB 308million, respectively.

In 2011, the PRC Government promulgated a New Emission Standards of Air Pollutants for Thermal Power Plants, which implement more stringent standards on discharge of polluting substances by thermal power plants. These restrictive standards govern both the total sulfur dioxide and nitrous oxide emissions from the power plant and the emission density of each chimney, and also require thermal power plants to equip all units with denitrification facilities by the end of 2015.

In September 2013, the State Council issued the Air Pollution Prevention Action Plan (the "Plan"), setting forth stricter requirements for air pollution prevention and control. Local government departments have released local rules and regulations under the Plan, some of which require higher emission standards than the national ones. Carbon emission trading has been conducted in certain regions on a trial basis and could be gradually introduced to an expanded market in the future. On July 1, 2014, the new pollutants emission standards for thermal power plants and the dust emission standards in key regions will also come into effect.  In September 2014, the NDRC, the Ministry of Environmental Protection and China National Energy Administration jointly issued the 2014-2020 Action Plan for Energy Saving, Emission Reduction and Renovation of Coal-fired Generation Units, imposing more

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strict requirements for efficient and clean development of coal-fired generating plants. In December 2016, the State Council issued the Comprehensive Work Plan for Conserving Energy and Reducing Emissions for the 13th Five-Year, putting forward new goals and requirements for energy saving and emission reduction.

In order to meet the requirements of the New Emission Standards, we have installed flue gas desulphurization ("FGD") facilities and denitrification facilities with all of our newly constructed generating units. We have also carried out sulfur disposal reform on the existing generating units. As of the end of 2012, we have installed and operated desulphurization facilities on all our existing coal-fired generating units.  By the end of 2014, all coal-fired generating units of the Company have been renovated to include denitrification facilities.

In order to reduce fly ash, we use very high-efficiency electrostatic precipitators and conduct efficiency improvement and renovations according to increasingly strict state and local emission standards. Each power plant is also equipped with a wastewater treatment facility to treat water used by the power plant before it is released into the river or the sea. We pay discharge fees on the basis of measurements made at discharge points of each plant where waste is released. All of the disposal equipment and facilities for sulfur dioxide, fly ash, wastewater, nitrogen oxides, smoke dust and noise in our existing power plants completely satisfy the existing national standards.

In addition, according to the State’s plan of implementing ultra-low emission of coal-fired generating units, the Company has carried out technological upgrades for all coal-fired generating units in 2017, completing the task required by the State early.

We believe we have implemented systems that are adequate to control environmental pollution caused by our facilities. In addition to the measures identified above, each power plant has its own environment protection office and staff responsible for monitoring and operating the environmental protection equipment. The environmental protection departments of the local governments monitor the level of emissions and base their fee assessments on the results of their tests.

We believe our environmental protection systems and facilities for the power plants are adequate for us to comply with the currently effective national and local environmental protection regulations. It is expected that the PRC Government will impose additional and stricter regulations to implement the emission plan which would require additional expenditure in compliance with environmental regulations.

Environmental Regulation in Singapore

Tuas Power's generation operations are subject to Singapore's Environmental Protection and Management Act and Environmental Public Health Act. The former sets out requirements pertaining to control of pollution and management of hazardous substance while the latter focuses mainly on proper waste management.

Tuas Power Station

To address the environmental concerns and regulatory requirements, Tuas Power Station has put in place an environmental management system, which is certified to ISO14001 standard. All generating units are equipped with pollution control facilities. Stage I steam plant burn low sulfur content fuel oil and employ an electro-precipitator to control sulfur dioxide and particulate emissions. Stage II combined-cycle plants burn natural gas and are fitted with low-nitrogen oxide burners to control nitrogen oxide emissions. Source emission tests are conducted annually by National Environment Agency (NEA) accredited contractors and the results are submitted to NEA Pollution Control Department.

Tuas Power Station has a dedicated wastewater treatment plant to treat its oily wastewater and process wastewater prior to discharge into the sea. The treatment processes are automated to prevent accidental adverse discharge and critical parameters are monitored on a real-time basis. Trade effluent testing is performed annually and the results are shared with the Pollution Control Department.

Land contamination is prevented through well-designed storage and containment procedures. Specific areas for storage of waste and hazardous substances are designated within the power plant.

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Waste generated in Tuas Power Station plants is identified and managed accordingly. Waste with residual value, such as waste oil, is resold to licensed collectors for reuse while other waste is disposed through licensed disposal contractors.

Hazardous substances which have potential to cause environmental pollution are controlled within the power plant compound. A hazardous substance permit, issued by the Pollution Control Department, is required to store the hazardous substances in the premises. Our personnel who handle these chemicals are properly trained and our storage facility for hazardous substances are specifically designed to prevent and mitigate the likelihood and impact of any abnormal releases. Regular audits are conducted to ensure these hazardous substances are managed properly and the findings and recommendations for improvements are reported to the Pollution Control Department.

TMUC

TMUC utilizes an efficient cogeneration process where up to 80% of the useful energy from the plant is used to produce steam for industrial customers and the remaining energy is converted to electricity for internal use and transmission to the national grid. In 2017, the energy split between heat and power is 51% and 49% respectively, and the overall plant efficiency averaged at 63%.

The TMUC plant is designed to comply with stringent environmental standards set by the local authority. TMUC has put in place a robust environmental management system and it is certified to ISO14001 standard.  TMUC adopts the circulating fluidized bed boiler technology that enables use of high percentage of carbon neutral biomass (palm kernel shell and woodchips) co-fired with clean coal (low sulphur and low ash) to reduce carbon footprint significantly to the same level as oil-fired plant and with lower sulphur and nitrogen oxides emission. High efficiency bag filters are installed to ensure low particulates emission.

Coal, biomass and ash handling, transfer and storage systems at TMUC are fully enclosed to prevent any fugitive dust during unloading, storage and handling operation. Coal and ash are stored in silo while biomass is stored in enclosed warehouse.

Fly ash and bed ash generated from the CFB boilers are fully recycled and processed for industrial use in cement and concrete applications.

Oily wastewater, coal/ash washing wastewater and industrial wastewater received from customers are treated prior to discharge. Online monitoring of oil-in-water, suspended solids (through turbidity meter) and chemical oxygen demand (COD) are carried out for oily wastewater, coal/ash washing wastewater and industrial wastewater respectively to ensure compliance with environmental regulation. Chemical/regeneration wastewater is neutralized prior to discharge. Online monitoring of pH is conducted to prevent accidental discharge. Stop-gates are strategically installed at drain to prevent accidental discharge of poor quality effluent/water to the sea.

Insurance

We currently maintain property all-risks insurance and machinery-breakdown insurance for all of our power plants, and construction all-risks insurance or erection all-risks insurance for all of our newly built and expansion projects as well as large-scaled upgrading projects. Our current insurance coverage on our property, plant and equipment (including construction all-risk insurance) is mainly maintained with Yongcheng Property and Casualty Insurance Company, which amounted to approximately RMB543.12 billion. In 2017, we renewed the liabilities insurance for our directors and officers with coverage of US$10 million.

We do not maintain any third-party liability insurance to cover claims in respect of bodily injury or property or environment damage arising from accidents on our property or relating to our operation other than the third-party additional risk insurance included in construction all-risk insurance or erection all-risk insurance. We do not usually carry business interruption insurance either, which is not customarily carried by power companies in the PRC. We believe that our insurance coverage is adequate and is standard for the power industry in China. Please refer to the section entitled "Risk factors – Risks relating to our business and the PRC's power industry – Operation of power plants involves many risks and we may not have enough insurance to cover the economic losses if any of our power plant's ordinary operation is interrupted."

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Tuas Power purchases key insurance policies, such as industrial all-risks insurance (including business interruption insurance coverage), public and products liability insurance, directors' and officers' liability insurance, pollution legal liability insurance and marine cargo insurance. Total insured value under the industrial all-risks insurance is US$4.5 billion for 2018.

ITEM 4A Unresolved Staff Comments

None.

ITEM 5 Operating and Financial Reviews and Prospects

A. General

The principal activities of the Company are investment, construction, operation and management of power plants. The Company provides consistent and reliable electricity supply to customers through grid operators where its operating plants are located. The Company is committed to scientific development through increasing economic efficiency, enhancing returns for shareholders, conserving resources and protecting the environment. The Company also attaches importance to social responsibilities and makes an active contribution to the building of a harmonious society.

Since its incorporation, the Company has continued to expand its operational scale. The Company has been a leader in its industry in terms of competitiveness, resource utilization efficiency and environmental protection. The Company is Asia's largest listed power producer and China's most dynamic power generator. Its power generation operations are widely located with coverage in the Northeast China Grid, the Northern China Grid, the Northwest China Grid, the Eastern China Grid, the Central China Grid, the Southern China Grid, and the overseas market in Singapore.

Looking back in 2017, with strong support from its shareholders and the employees, the Company made active and concerted efforts to respond to the changes in power, coal and capital markets by expanding overseas market share, improving marketing analysis and enhancing internal management with focuses on key operations, thorough planning and sound internal control. These efforts have contributed to the growth of the Company in various aspects in 2017. Throughout 2017, the Company maintained its leading position in major technological and economic indicators and utilization hours through safe production and active marketing activities. Its fuel management was strengthened and financial costs were effectively controlled. Marked improvement was noticeable in the Company's growth because of its active power generation reorganizing efforts. The Company has also made new developments in energy saving, ultra-low emission and technological renovation, diligently fulfilling its social responsibilities as a reliable provider of sufficient, stable and environmentally-friendly power to the society.

Critical accounting policies

The Company and its subsidiaries have identified the policies below as critical to our business operations and the understanding of our results of operations. The impact of and any associated risks related to these policies on the business operations are discussed throughout the Operating and Financial Reviews and Prospects where such policies affect our reported and expected financial results. For a detailed discussion on the application of these and other accounting policies, see Note 2 to the Financial Statements in Item 18 of this Annual Report on Form 20-F. Note that our preparation of this Annual Report on Form 20-F requires us to make estimates and assumptions that affect the reported amount of assets and liabilities, disclosure of contingent assets and liabilities at the date of our financial statements, and the reported amount of revenue and expenses during the reported periods. There can be no assurance that actual results will not differ from those estimates.

Depreciation of property, plant and equipment

Depreciation of property, plant and equipment is provided based on book value of assets less estimated residual value over estimated useful life using straight-line method. For these impaired property, plant and equipment, depreciation is provided based on book value after deducting the impairment provision over estimated useful life of asset. The estimated useful lives are as follows:

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	2017
Dam	8 – 50 years
Port facilities	20 – 40 years
Buildings	8 – 30 years
Electric utility plant in service	5 – 30 years
Transportation facilities	8 – 27 years
Others	5 – 14 years

Where parts of an item of property, plant or equipment have different useful lives, the cost of the item is allocated on a reasonable basis between the parts and each part is depreciated separately. At the end of each year, the Company and its subsidiaries review the estimated useful lives, residual values and the depreciation method of the property, plant and equipment and make an adjustment when necessary.

Useful life of power generation license

The Company and its subsidiaries acquired the power generation license as part of the business combination with Tuas Power. The power generation license is initially recognized at fair value at the acquisition date. The license has an indefinite useful life and is not amortized. The assessment that the license has an indefinite useful life is based on the expected renewal of power generation license without significant restriction and cost, together with the consideration on related future cash flows generated and the expectation of continuous operations. It is tested annually for impairment and carried at cost less accumulated impairment loss. Useful life of the power generation license is reviewed by the Company and its subsidiaries each financial period to determine whether events and circumstances continue to support the indefinite useful life assessment.

Impairment of non-financial assets

The carrying amounts of property, plant and equipment, intangible assets with definite useful lives, land use rights, mining rights and long-term equity investments not accounted for as financial assets are reviewed at each reporting date to determine whether there is any indication of impairment. If any such indication exists, then the asset's recoverable amount is estimated. Goodwill, indefinite-lived intangible assets and intangible assets not yet available for use are tested for impairment annually regardless of whether there are indications of impairment or more frequently if events or changes in circumstances indicate a potential impairment. An impairment loss is recognized if the carrying amount of an asset or cash-generating unit ("CGU") exceeds its recoverable amount.

The recoverable amount of an asset or CGU is the greater of its value in use and its fair value less cost to sell. For impairment testing, assets are grouped together into the smallest group of assets that generate cash inflows from continuing use that are largely independent of the cash inflows of other assets or CGUs.

Subject to an operating segment ceiling test, CGUs to which goodwill has been allocated are aggregated so that the level at which impairment testing is performed reflects the lowest level at which goodwill is monitored for internal reporting purposes.

Goodwill acquired in a business combination is allocated to groups of CGUs that are expected to benefit from the synergies of the combination.

Impairment losses are recognized in profit or loss. Impairment losses recognised in respect of CGUs are allocated first to reduce the carrying amount of any goodwill allocated to the CGU (group of CGUs), and then to reduce the carrying amounts of the other assets in the CGU (group of CGUs) on a pro rata basis, except that the carrying value of an asset will not be reduced below its individual fair value less costs of disposal (if measurable) or value in use (if determinable).

An impairment loss in respect of goodwill is not reversed. Except for goodwill, all impaired non-financial assets are subject to review for possible reversal of impairment at each reporting date. A reversal of an impairment loss is limited to the asset's carrying amount that would have been determined had no impairment loss been

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recognized in the prior year. Reversals of impairment losses are credited to profit or loss in the year in which the reversals are recognized.

Deferred income tax

Deferred income tax assets and liabilities are recognized based on the differences between tax bases of assets and liabilities and respective book values (temporary differences). For deductible tax losses or tax credit that can be brought forward in accordance with tax law requirements for deduction of taxable income in subsequent years, it is considered as temporary differences and related deferred income tax assets are recognized. No deferred income tax liability is recognized for temporary difference arising from initial recognition of goodwill. For those temporary differences arising from initial recognition of an asset or liability in a non-business combination transaction that affects neither accounting profit nor taxable profit (or deductible loss) at the time of the transaction, no deferred income tax asset and liability is recognized. The temporary differences relating to investments in subsidiaries to the extent that, in the case of taxable differences, the Company and its subsidiaries control the timing of the reversal and it is probable that the differences will not reverse in the foreseeable future, or in the case of deductible differences, unless it is probable that they will reverse in the future.

The Company and its subsidiaries recognize deferred income tax assets to the extent that it is probable that taxable profit will be available to offset the deductible temporary difference, deductible tax loss and tax credit.

At the end of reporting period, deferred income tax assets and liabilities are measured at the tax rates that are expected to apply to the period when the asset is realized or liability is settled.

The carrying amount of a deferred tax asset is reviewed at the end of each reporting period and is reduced to the extent that it is no longer probable that sufficient taxable profits will be available to allow the related tax benefit to be utilized. Any such reduction is reversed to the extent that it becomes probable that sufficient taxable profits will be available.

Deferred income tax assets and deferred income tax liabilities are offset when meeting all the conditions below:

(1) The Company and its subsidiaries have the legally enforceable right to offset current income tax assets and current income tax liabilities;

(2) Deferred income tax assets and deferred income tax liabilities are related to the income tax levied by the same tax authority of the Company and its subsidiaries.

Business combination

For the business combinations undertaken by the Company, the Company recognises the assets acquired and the liabilities assumed based on their estimated fair value on the date of acquisition. Any excess of purchase consideration over the estimated fair values of acquired identifiable net assets is recorded goodwill. The contingent consideration of the Company in the business combination is recognised as a financial asset at fair value through profit or loss (included in other non-current assets and other receivables and assets).

The Company makes judgements and estimates in relation to the fair value of the assets acquired and the liabilities assumed and the contingent consideration from business combination. The fair value of acquired assets and assumed liabilities and the contingent consideration are determined using valuation techniques. Estimating the fair value assigned to each class of acquired assets and assumed liabilities and the contingent consideration are based on expectations and assumptions, in particular in relation to the future sales volumes and the related revenue growth rate, future on-grid tariffs, future capital expenditure, future fuel prices, future other operating costs and the discount rates applied.

A change in the amount allocated to identifiable net assets would have an offsetting effect on the amount of goodwill recognised from the acquisition and would change the amount of depreciation and amortisation expense recognised related to those identifiable net assets. And outcomes within the next financial period that are different from assumptions could require a material adjustment to the carrying amounts of contingent consideration.

New accounting pronouncements

For a detailed discussion of new accounting pronouncements, see Note 2(ad) to the Financial Statements.

B. Operating results

Our financial statements are prepared under IFRS as issued by IASB. The following management's discussion and analysis is based on the financial information prepared under IFRS.

89

Year ended December 31, 2017 compared with year ended December 31, 2016

	For the Year Ended December 31,
	2017			2016			Increased/ (Decreased)
	RMB'000			RMB'000			%
Operating revenue		152,459,444			113,814,236			33.95
Tax and levies on operations		(1,376,312	)		(1,177,818	)		16.85
Operating expenses
Fuel		(92,737,304	)		(56,617,542	)		63.80
Maintenance		(4,347,723	)		(4,343,349	)		0.10
Depreciation		(20,180,830	)		(14,815,620	)		36.21
Labor		(10,590,084	)		(8,043,406	)		31.66
Service fees on transmission and transformer facilities of HIPDC		(95,894	)		(138,038	)		-30.53
Purchase of electricity		(3,787,032	)		(3,066,415	)		23.50
Others		(10,160,875	)		(7,234,308	)		40.45
Total operating expenses		(141,899,742	)		(94,258,678	)		50.54
Profit from operations		9,183,390			18,377,740			-50.03
Interest income		198,906			147,063			35.25
Financial expenses, net
Interest expense		(9,749,004	)		(6,817,526	)		43.00
Exchange gain / (loss) and bank charges , net		144,359			(250,076	)		-157.73
Total financial expenses, net		(9,604,645	)		(7,067,602	)		35.90
Share of profits less losses of associates and joint ventures		425,215			1,298,889			-67.26
Gain / (loss)  on fair value changes of financial assets / liabilities		856,786			(12,986	)
Other investment income		1,742,081			1,070,034			62.81
Profit before income tax expense		2,801,733			13,813,138			-79.72
Income tax expense		(1,217,526	)		(3,465,151	)		-64.86
Net Profit		1,584,207			10,347,987			-84.69
Attributable to:
-Equity holders of the Company		1,579,836			8,520,427			-81.46
-Non-controlling interests		4,371			1,827,560			-99.76

Total power generated by the Company's domestic operating power plants for the year on consolidated basis amounted to 394.481 billion kWh, representing an increase of 25.8% year-on-year. The electricity sold amounted to 371.399 billion kWh, representing an increase of 25.6% year-on-year. Newly acquired entities and newly operated generating units mainly contributed to the power generation growth of the Company, meanwhile the power generation by power plants in the regions of central China, east China and Guangdong provinces increased.

The annual average utilization hours of the Company's domestic power plants reached 3,951 hours. In most of the areas where the Company's coal-fired power plants are located, the utilization hours of the Company was in a leading position within those areas.

The power generation of the Company's domestic power plants for the year ended December 31, 2017 is listed below (in billion kWh):

	Power Generation					Electricity Sold
Region	2017		Change			2017		Change
*Heilongjiang Province		13.172		3.53	%		12.320		3.52	%
*Coal-fired		12.250		1.58	%		11.412		1.43	%
*Wind-power		0.922		38.89	%		0.907		39.75	%

90

	Power Generation					Electricity Sold
Region	2017		Change			2017		Change
Jilin Province		8.596		13.44	%		8.111		13.81	%
*Coal-fired		7.448		10.69	%		7.009		10.76	%
*Wind-power		0.860		48.17	%		0.836		51.24	%
*Hydro-power		0.062		0.75	%		0.061		0.79	%
*PV		0.0116		-			0.0115		-
*Biomass power		0.215		3.62	%		0.193		4.35	%
Liaoning Province		19.704		-0.60	%		18.395		-1.25	%
*Coal-fired		19.253		-1.15	%		17.947		-1.84	%
*Wind-power		0.333		12.13	%		0.331		12.19	%
*Hydro-power		0.039		14.43	%		0.039		14.00	%
*PV		0.0790		392.78	%		0.0778		396.67	%
Inner Mongolia		0.228		4.84	%		0.226		4.50	%
Wind-power		0.228		4.84	%		0.226		4.50	%
Hebei Province		13.400		2.58	%		12.585		2.40	%
Coal-fired		13.132		1.55	%		12.343		1.43	%
Wind-power		0.228		96.82	%		0.204		87.01	%
PV		0.0399		153.60	%		0.0375		208.25	%
Gansu Province		9.935		2.25	%		9.413		0.08	%
Coal-fired		8.333		-1.30	%		7.865		-3.91	%
Wind-power		1.602		25.80	%		1.548		26.78	%
Ningxia		0.0103		-			0.0099		-
PV		0.0103		-			0.0099		-
Beijing		6.176		-18.12	%		5.562		-20.61	%
Coal-fired		1.339		-60.68	%		1.163		-60.79	%
Combined Cycle		4.836		16.92	%		4.399		8.87	%
Tianjin		7.273		0.27	%		6.843		0.01	%
Coal-fired		5.658		7.15	%		5.271		7.18	%
Combined Cycle		1.614		-18.22	%		1.570		-18.39	%
PV		0.0015		-			0.0015		-
Shanxi Province		9.813		-8.35	%		9.185		-8.75	%
Coal-fired		7.035		-13.80	%		6.495		-14.46	%
Combined Cycle		2.743		7.75	%		2.668		7.87	%
PV		0.0350		-			0.0221		-
Shandong Province		89.487		116.39	%		83.787		115.24	%
Coal-fired		88.848		114.85	%		83.162		113.63	%
*Wind-power		0.452		8.82	%		0.440		9.13	%
*PV		0.1865		266.61	%		0.1851		276.54	%
Henan Province		22.210		3.53	%		20.927		7.58	%
Coal-fired		20.696		-3.44	%		19.457		0.02	%
*Combined Cycle		1.424		-8.13	%		1.393		-8.18	%
Wind-power		0.077		309.51	%		0.076		513.65	%
PV		0.0128		-			0.0126		-
Jiangsu Province		42.761		-0.61	%		40.452		-1.05	%
Coal-fired		36.441		-6.38	%		34.395		-6.70
Combined Cycle		5.199		47.79	%		5.010		45.02	%
Wind-power		1.077		86.12	%		1.004		79.52	%
PV		0.0442		-			0.0436		-
Shanghai		18.484		1.91	%		17.490		1.80	%
Coal-fired		16.934		2.70	%		15.976		2.60	%
Combined Cycle		1.550		-5.99	%		1.513		-5.94	%
Chongqing		8.563		-14.51	%		7.930		-14.86	%

91

	Power Generation					Electricity Sold
Region	2017		Change			2017		Change
Coal-fired		7.388		-9.40	%		6.787		-9.52	%
Combined Cycle		1.175		-36.90	%		1.144		-36.94	%
Zhejiang Province		27.589		11.65	%		26.487		11.74	%
Coal-fired		27.090		12.08	%		26.000		12.18	%
Combined Cycle		0.449		-13.30	%		0.438		-13.46	%
PV		0.0496		130.26	%		0.0492		128.47	%
Hubei Province		14.781		4.94	%		13.833		4.73	%
Coal-fired		14.147		4.00	%		13.215		3.64	%
Wind-power		0.292		54.86	%		0.287		64.88	%
Hydro-power		0.336		14.36	%		0.325		14.80	%
PV		0.0059		-			0.0059		-
Hunan Province		9.308		11.94	%		8.709		11.28	%
Coal-fired		8.476		13.86	%		7.889		13.23	%
Wind-power		0.531		-1.11	%		0.525		-1.16	%
Hydro-power		0.285		-14.68	%		0.280		-14.77	%
PV		0.0162		-			0.0159		-
Jiangxi Province		19.801		13.53	%		18.915		13.67	%
Coal-fired		19.529		12.66	%		18.670		12.88	%
Wind-power		0.272		153.43	%		0.245		142.93	%
Anhui Province		5.940		1.60	%		5.677		1.82	%
Coal-fired		5.714		1.73	%		5.454		1.88	%
Wind-power		0.127		42.14	%		0.124		52.18	%
Hydro-power		0.099		-29.68	%		0.098		-29.81	%
Fujian Province		10.380		35.22	%		9.791		35.45	%
Coal-fired		10.373		35.12	%		9.787		35.39	%
PV		0.0073		-			0.0041		-
Guangdong Province		21.448		22.89	%		20.491		22.75	%
Coal-fired		21.425		22.81	%		20.468		22.66	%
PV		0.0225		217.25	%		0.0225		250.68	%
Guangxi		0.029		-			-		-
Combined Cycle		0.029		-			-		-
Yunnan Province		3.688		-5.01	%		3.398		-4.89	%
Coal-fired		3.270		-8.76	%		2.997		-9.05	%
Wind-power		0.418		40.04	%		0.401		44.53	%
Guizhou Province		0.058		28.88	%		0.054		43.36	%
Wind-power		0.058		28.88	%		0.054		43.36	%
Hainan Province		11.647		-2.36	%		10.809		-2.62	%
Coal-fired		11.327		-1.74	%		10.495		-2.02	%
Combined Cycle		0.020		-84.64	%		0.019		-84.29	%
Wind-power		0.117		15.47	%		0.114		15.39	%
Hydro-power		0.153		-6.37	%		0.151		-6.33	%
PV		0.0305		267.36	%		0.0301		268.30	%
Total		394.481		25.76	%		371.399		25.56	%

Note: The remark * represented the regional companies or power plants involved in the new acquisition by the Company at the end of 2016. They had been incorporated in the Company’s financial statements since 1 January 2017, and the year-on-year data of which is for information only.

92

For the year ended December 31, 2017, the accumulated power generation of Tuas Power Ltd., the Company's wholly owned subsidiary in Singapore, accounted for a market share of 21.9% in Singapore, representing an increase of 0.4% compared to the same period last year of 21.5%.

In respect of the tariff, the Company's average tariff of domestic power plants for the year ended December 31, 2017 was RMB414.01 per MWh, up by RMB17.41 per MWh from the year ended December 31, 2016. SinoSing Power's average tariff for 2017 was RMB544.15 per MWh, representing an increase of 5.86% from the same period last year.

In respect of fuel costs, there was a huge increase in fuel costs. Compared with 2016, the Company's fuel cost per unit of power sold of domestic power plant increased by 32.41% to RMB225.92 per MWh.

Combining the foregoing factors, for the year ended December 31, 2017, the Company recorded an operating revenue of RMB152.459 billion, representing an increase of 33.95% from RMB113.814 billion of last year, and the net profit attributable to equity holders of the Company of RMB1.580 billion, representing a decrease of 81.46% from RMB8.520 billion of last year.

For the year ended December 31, 2017, the net profit attributable to equity holders of the Company from domestic operations was RMB2.057 billion, representing a decrease of RMB6.703 billion from RMB8.760 billion for the same period last year. The decrease was primarily attributable to the huge increase in the coal price, which severely impacted our profitability. The net loss attributable to equity holders of the Company from its operations in Singapore was RMB477 million, representing an increase of RMB237 million compared to the same period last year.

Operating revenue and tax and levies on operations

Operating revenue mainly consists of revenue from electricity sold. For the year ended December 31, 2017, the consolidated operating revenue of the Company and its subsidiaries amounted to RMB152.459 billion, representing an increase of 33.95% from RMB113.814 billion for the year ended December 31, 2016. The operating revenue from domestic operations of the Company increase by RMB37.326 billion over the same period of last year, while the operating revenue generated from newly acquired entities and newly operated generating units was RMB33.956 billion.

In 2017, the operating revenue from the operations of the Company in Singapore increased by RMB1.319 billion over the same period of last year, which was mainly attributed to the proactive competition strategy we employed in the Singapore market and the increase in the tariff.

The following table sets forth the average tariff rate of the Company's power plants, as well as percentage changes from 2016 to 2017.

	Average tariff rate (VAT inclusive) (RMB/MWh)
Power Plant	2017		2016		Change (%)
Heilongjiang Province		374.75		－		－
Xinhua Power Plant		368.12	－		－
Hegang Power Plant		368.09	－		－
Daqing Co-generation		403.09	－		－
Yichun Co-generation		374.75	－		－
Sanjiangkou Wind Power		596.28	－		－
Linjiang Jiangsheng Wind Power		595.34	－		－
Jilin Province
Jiutai Power Plant		385.03	－		－
Changchun Co-generation		381.50	－		－
Nongan Biomass		750.02	－		－

93

	Average tariff rate (VAT inclusive) (RMB/MWh)
Power Plant	2017		2016		Change (%)
Linjiang Jubao Hydropower		438.53	－		－
Zhenlai Wind Power		566.31	－		－
Siping Wind Power		569.21	－		－
Tongyu Tuanjie Wind Power		535.27	－		－
Liaoning Province
Dalian		367.97		346.76		6.12
Dandong		392.97		352.52		11.47
Yingkou		365.73		344.71		6.10
Yingkou Co-generation		368.11		331.39		11.08
Wafangdian Wind Power		586.87		603.72		(2.79	)
Suzihe Hydropower		330.00		332.67		(0.80	)
Changtu Wind Power		582.51		626.09		(6.96	)
Dandong Photovoltaic		950.00		950.00		0
Yingkon Co-generation Photovoltaic		950.00		950.00		0
Yingkou Xianrendao Co-generation Power		880.00	－		－
Jianchang Bashihan Photovoltaic		880.00	－		－
Chaoyang Heiniuyingzi Photovoltaic		347.25	－		－
Inner Mongolia Autonomous Region
Huade Wind Power		452.91		471.22		(3.89	)
Hebei Province
Shang’an		366.23		358.48		2.16
Kangbao Wind Power		660.42		554.60		19.08
Kangbao Photovoltaic		982.50		784.95		25.17
Zhuolu Phase I Dabao Wind Power		519.45	－		－
Gansu Province
Pingliang		246.89		207.63		18.91
Jiuquan Wind Power		437.85		367.54		19.13
Jiuquan II Wind Power		449.50		402.36		11.72
Yumen Wind Power		430.53		390.06		10.38
Yigang Wind Power		554.72		447.65		23.92
Beijing Municipality
Beijing Co-generation (Coal-fired)		689.91		454.99		51.63
Beijing Co-generation (Combined Cycle)		674.07		687.33		(1.93	)
Tianjin Municipality
Yangliuqing Co-generation		393.95		370.82		6.24
Lingang Co-generation CCGT		699.14		726.44		(3.76	)
Chenxi Photovoltaic		879.99	－		－
Shanxi Province
Yushe		323.54		253.01		27.88
Zuoquan		314.64		252.96		24.38
Dongshan CCGT		678.32		682.40		(0.60	)
Yushe Photovoltaic		1370.19	－		－
Shandong Province
Dezhou		401.45		389.78		2.99
Jining		395.54		372.57		6.17
Xindian		397.61		381.58		4.20
Weihai		404.81		382.53		5.82
Rizhao Phase II		391.43		372.08		5.20
Zhanhua Co-generation		437.74		389.33		12.43
Baiyanghe Power Plant		400.42	－		－

94

	Average tariff rate (VAT inclusive) (RMB/MWh)
Power Plant	2017		2016		Change (%)
Rizhao Power Plant Phase I		458.82	－		－
Jiaxiang Power Plant		388.05	－		－
Jining Co-generation		395.19	－		－
QufuCo-generation		390.16	－		－
Huangtai Power Plant		390.59	－		－
Yantai Power Plant		409.84	－		－
Linyi Power Plant		402.16	－		－
Jining Yunhe Power Plant		403.84	－		－
Liaocheng Co-generation		390.49	－		－
Taian Power Plant		371.67	－		－
Laiwu Power Plant		384.36	－		－
Muping Wind Power		627.56	－		－
Penglai Wind Power		569.97	－		－
Rushan Wind Power		634.98	－		－
Changdao Wind Power		635.20	－		－
Rongcheng Wind Power		622.69	－		－
Dongying Wind Power		623.54	－		－
Boshan Photovoltaic		1,000.00	－		－
Sishui Photovoltaic		1,109.60	－		－
Gaozhuang Photovoltaic		592.44	－		－
Jining Co-generation Photovoltaic		592.44	－		－
Weihai Haibu Photovoltaic		830.00	－		－
Zhanhua Qingfenghu Photovoltaic		1,080.00	－		－
Henan Province
Qinbei		374.82		354.30		5.79
Luoyang Co-generation		364.95		365.91		(0.26	)
Luoyang  Yangguang		376.26		316.83		18.76
Mianchi Co-generation		349.95		328.10		6.66
Zhumadian Wind Power		610.00		610.00		0
Zhongyuan CCGT		600.00	－		－
Jiangsu Province
Nantong		417.42		407.55		2.42
Nanjing		428.37		400.81		6.88
Taicang I		372.74		349.31		6.71
Taicang II		372.74		349.31		6.71
Huaiyin		487.47		433.30		12.50
Jinling Coal-fired		366.53		348.86		5.07
Jinling Combined-Circle		593.09		708.41		(16.28	)
Jinling Combined-Cycle Cogeneration		604.16		617.12		(2.10	)
Suzhou Thermal Power		465.86		453.42		2.74
Qidong Wind Power		556.03		553.91		0.38
Rudong Wind Power		609.29		606.24		0.50
Nanjing Thermal Power		469.99		445.21		5.57
Tongshan Wind Power		610.00		610.00		0
Rudong Offshore Wind Power		850.00	－		－
Luhe Wind Power		610.00	－		－
Guanyun Power		433.00	－		－
Suzhou CCGT		612.79	－		－

95

	Average tariff rate (VAT inclusive) (RMB/MWh)
Power Plant	2017		2016		Change (%)
Shanghai Municipality
Shidongkou I		401.11		395.18		1.50
Shidongkou II		397.96		380.60		4.56
Shanghai CCGT		911.36		382.31		138.38
Shidongkou Power		395.75		899.62		(56.01	)
Chongqing Municipality
Luohuang		392.74		376.92		4.20
Liangjiang CCGT		811.53		649.74		24.90
Zhejiang Province
Yuhuan		418.58		403.82		3.66
Changxing		429.18		420.54		2.05
Tongxiang Combined-cycle		912.07		887.70		2.75
Changxing Photovoltaic		1,252.38		1,208.23		3.65
Hongqiao Photovoltaic		1,119.24		980.00		14.21
Huzhou Distributed Photovoltaic		1,009.06	－		－
Hunan Province
Yueyang		456.55		449.87		1.48
Xiangqi Hydropower		376.17		610.00		(38.33	)
Subaoding Wind Power		605.55		610.00		(0.73	)
Guidong Wind Power		605.55		404.19		49.82
Hubei Province
Enshi Maweigou Hydropower		383.42		380.43		0.79
Jingmen Thermal Power		403.50		378.97		6.47
Yingcheng Thermal Power		405.69		392.73		3.30
Wuhan Power		401.70		376.53		6.68
Dalongtan Hydropower		370.00		376.38		(1.70	)
Jieshan Wind Power		676.00		610.00		10.82
Suizhou Zengdufuhe Photovoltaic		880.00	－		－
Jiangxi Province
Jinggangshan		409.42		399.06		2.60
Jianggongling Wind Power		610.00		610.00		0
Ruijin Power		411.81		399.27		3.14
Anyuan Power		415.17		400.98		3.54
Anhui Province
Chaohu Power		371.86		351.24		5.87
Hualiangting Hydropower		376.74		385.60		(2.30	)
Huaining Wind Power		610.00		610.00		0
Fujian Province
Fuzhou		375.59		348.95		7.63
Changle Photovoltaic		980.00	－		－
Guangdong Province
Shantou Coal-fired		448.26		464.69		(3.54	)
Haimen		425.50		440.21		(3.34	)
Haimen Power		428.41		444.53		(3.63	)
Shantou Photovoltaic		980.00		980.00		0
Yunnan Province
Diandong Energy		358.12		513.58		(30.27	)
Yuwang Energy		329.35		1,394.49		(76.38	)
Fuyuan Wind Power		478.37		494.71		(3.30	)
Guizhou Province
Panxian Wind Power		599.76		610.00		(1.68	)

96

	Average tariff rate (VAT inclusive) (RMB/MWh)
Power Plant	2017		2016		Change (%)
Hainan Province
Haikou		429.17		420.45		2.07
Dongfang		432.70		420.90		2.80
Nanshan Combined Cycle		1,619.97		672.26		140.97
Gezhen Hydropower		399.53		400.07		(0.13	)
Wenchang Wind Power		608.99		609.78		(0.13	)
Dongfang Photovoltaic		1,010.00		1,010.00		0
Domestic total		414.01		396.60		4.39
Singapore
SinoSing Power		544.15		514.00		5.87

Note: The tariff of combined-cycle power plants in Shanghai and Zhejiang consists of on-grid settlement price and capacity subsidy income. Changdao Wind Power has been shut down.

Tax and levies on operations mainly consist of surcharges of value added tax. According to relevant administrative regulations, these surcharges include City Construction Tax and Education Surcharges calculated at prescribed percentages on the amounts of the value-added tax paid. For the year ended December 31, 2017, the tax and levies on operations of the Company and its subsidiaries were RMB1.376 billion, representing an increase of RMB198 million from RMB1.178 billion for the same period of last year, of which the tax and levies on operations attributable to newly acquired entities and new generating units accounted for RMB278 million.

Operating expenses

For the year ended December 31, 2017, the total operating expenses of the Company and its subsidiaries was RMB141.900 billion, representing an increase of 50.54% from the same period last year. The operating expenses in domestic operations of the Company increased by RMB46.074 billion, or 53.85%, from the same period last year, of which the newly acquired entities and the new generating units accounted for RMB32.364 billion; the costs attributable to the existing entities increased by RMB13.710 billion, which was primarily attributable to the increased fuel cost for domestic operations in China.

The operating expenses from operations in Singapore operations increased by RMB1.567 billion, or 18.02%, from the same period last year, which was mainly due to increased gas cost attributed to the rise of international oil price.

Fuel costs

Fuel costs account for the majority of the operating expenses for the Company and its subsidiaries. For the year ended December 31, 2017, fuel costs of the Company and its subsidiaries increased by 63.79% to RMB92.737 billion from the RMB56.618 billion for the year ended December 31, 2016. The fuel costs from domestic operations of the Company and its subsidiaries increased by RMB35.387 billion, which was primarily attributable to the increase of the fuel price. The fuel costs of the newly acquired entities and new generating units were RMB17.402 billion and the fuel costs of the existing generating units increased by RMB17.985 billion from same period last year. Fuel costs in Singapore increased by RMB0.732 billion from the same period last year, mainly due to the increase in the gas price. For the year ended December 31, 2017, the average price (excluding tax) of natural fuel coal consumed of the Company and its domestic subsidiaries was RMB548.02 per ton, representing a 45.63% increase from RMB376.30 per ton for the year ended December 31, 2016. The fuel cost per unit of power sold by the Company's domestic power plants increased by 32.41% to RMB225.92/MWh from RMB170.62/MWh in 2016.

Maintenance

97

For the year ended December 31, 2017, the maintenance expenses of the Company and its subsidiaries amounted to RMB4.348 billion, representing an increase of RMB5 million from RMB4.343 billion for the year ended December 31, 2016. The maintenance expenses of the Company's domestic operations increased by RMB21 million compared to the same period last year. The maintenance expenses of operations in Singapore decreased by RMB16.00 million compared to the same period last year.

Depreciation

For the year ended December 31, 2017, depreciation expenses of the Company and its subsidiaries increased by 36.21% to RMB20.181 billion, compared to RMB14.816 billion for the year ended December 31, 2016; the increase is mainly due to the increase in the power generation by the newly acquired entities and new generating units. The depreciation expenses of domestic operations increased by RMB5,288 million compared to the same period last year, of which the depreciation costs incurred by the newly acquired entities and new generating units was RMB5,509 million. The depreciation expenses of the operations in Singapore increased by RMB77 million compared to the same period last year.

Labor

Labor costs consist of salaries to employees and contributions payable for employees' housing funds, medical insurance, pension and unemployment insurance, as well as training costs. For the year ended December 31, 2017, the labor costs of the Company and its subsidiaries amounted to RMB10.590 billion, representing an increase of RMB2,547 million from RMB8.043 billion for the year ended December 31, 2016. This is mainly attributable to the increase in the power generation by the newly acquired entities and new generating units. Labor costs for Singapore operations increased by RMB14 million compared to the same period last year.

Other operating expenses (including electricity power purchase costs and service fees paid to HIPDC)

Other operating expenses include environmental protection expenses, land fee, insurance premiums, office expenses, amortization, Tuas Power's electricity power purchase costs, impairment losses, government subsidies and net losses on disposal of properties, plant and equipment. For the year ended December 31, 2017, other operating expenses (including electricity power purchase costs and service fees paid to HIPDC) of the Company and its subsidiaries was RMB14.044 billion, representing an increase of RMB3.605 billion from RMB10.439 billion for the year ended December 31, 2016. The other operating expenses from the Company's domestic operations increased by RMB2.845 billion, mainly due to the increase in the power generation by the newly acquired entities and new generating units.

Other operating expenses of the operations in Singapore increased by RMB760 million compared to the same period last year.

Financial expenses

Financial expenses consist of interest expense, bank charges and net exchange differences.

Interest expenses

For the year ended December 31, 2017, the interest expenses of the Company and its subsidiaries were RMB9.749 billion, representing an increase of 42.99% from RMB6.818 billion for the year ended December 31, 2016. The interest expenses from the Company's domestic operations increased by RMB2.961 billion. The interest expenses from the newly acquired entities and new generating units were RMB2,510 million and those incurred by the existing entities in China increased by RMB0.451 billion, which is largely attributable to increased interest rate and debt scale. The interest expenses of Singapore operations decreased by RMB30 million compared to the same period last year.

Net exchange differences and bank charges

98

For the year ended December 31, 2017, the Company and its subsidiaries recorded a net gain of RMB144 million in net exchange losses and bank charges, representing a net gain increase of RMB394 million compared with the net loss of RMB250 million for the year ended December 31, 2016, mainly due to the strengthened exchange rate of RMB against U.S. dollar.

The operations in Singapore recorded net loss of RMB17 million from net exchange difference and bank charges, representing a decrease of RMB67 million from the net gains of RMB50 million for the year ended December 31, 2016, mainly due to settlement of effective hedging instruments for cash flow hedge.

Share of profits less losses of associates and joint ventures

For the year ended December 31, 2017, the share of profits less losses of associates and joint ventures was RMB0.425 billion, representing a decrease of RMB874 million from RMB1.299 billion from last year, mainly due to a decreased profit of associates and joint ventures.

Income tax expenses

For the year ended December 31, 2017, the Company and its subsidiaries recognized income tax expense of RMB1.218 billion, representing a decrease of RMB2.247 billion from RMB3.465 billion for the year ended December 31, 2016. The income tax expenses for the domestic operations decreased by RMB2.192 billion primarily attributable to the increase of the coal price in 2017 drove down our profitability and decreased our income tax.

The income tax expenses of the operations in Singapore decrease by RMB55 million.

Net profit, net profit attributable to the equity holders of the Company and non-controlling interests

For the year ended December 31, 2017, the Company and its subsidiaries achieved a net profit of RMB1.584 billion, representing a decrease of RMB8.764 billion, or 84.69% from RMB10.348 billion for the year ended December 31, 2016; the net profit attributable to equity holders of the Company was RMB1.580 billion, representing a decrease of RMB6.940 billion from RMB8.520 billion for the year ended December 31, 2016.

The net profit attributable to equity holders of the Company from its domestic operations decreased by RMB6.703 billion, mainly contributable to the huge increase in the coal price drove down our profitability. The net loss attributable to equity holders of the Company from its operations in Singapore was RMB477 million, representing an increase of RMB237 million from the same period last year. This was mainly due to the continued oversupply in the Singapore’s power market and lower than expected profit margin of power contracts, which led to a drop in the profitability of the Company’s overseas power generation business.

The Company's recorded net profit attributable to non-controlling interests decreased to RMB4 million for the year ended December 31, 2017 from RMB1,828 million for the year ended December 31, 2016, mainly attributable to the huge increase of the coal price from same period last year, which significantly reduced the profitability of the Company owned coal-fired power subsidiaries.

Year ended December 31, 2016 compared with year ended December 31, 2015

	For the Year Ended December 31,
	2016			2015			Increased/ (Decreased)
	RMB'000			RMB'000			%
Operating revenue		113,814,236			128,904,873			(11.71	)
Tax and levies on operations		(1,177,818	)		(1,157,760	)		1.73
Operating expenses
Fuel		(56,617,542	)		(59,242,367	)		(4.43	)
Maintenance		(4,343,349	)		(4,556,361	)		(4.68	)

99

	For the Year Ended December 31,
	2016			2015			Increased/ (Decreased)
	RMB'000			RMB'000			%
Depreciation		(14,815,620	)		(14,411,632	)		2.80
Labor		(8,043,406	)		(7,751,551	)		3.77
Service fees on transmission and transformer facilities of HIPDC		(138,038	)		(140,771	)		(1.94	)
Purchase of electricity		(3,066,415	)		(3,581,517	)		(14.38	)
Others		(7,234,308	)		(8,919,988	)		(18.90	)
Total operating expenses		(94,258,678	)		(98,604,187	)		(4.41	)
Profit from operations		18,377,740			29,142,926			(36.94	)
Interest income		147,063			160,723			(8.50	)
Financial expenses, net
Interest expense		(6,817,526	)		(7,945,734	)		(14.20	)
Exchange (loss)/gain and bank charges , net		(250,076	)		(24,336			927.60
Total financial expenses, net		(7,067,602	)		(7,970,070	)		(11.32	)
Share of profits less losses of associates and joint ventures		1,298,889			1,525,975			(14.88	)
Loss on fair value changes of financial assets / liabilities		(12,986	)		(16,742	)		(22.43	)
Other investment income		1,070,034			115,238			828.54
Profit before income tax expense		13,813,138			22,958,050			(39.83	)
Income tax expense		(3,465,151	)		(5,698,943	)		(39.20	)
Net Profit		10,347,987			17,259,107			(40.04	)
Attributable to:
-Equity holders of the Company		8,520,427			13,651,933			(37.59	)
-Non-controlling interests		1,827,560			3,607,174			(49.34	)

Total power generated by the Company's domestic operating power plans for the year on consolidated basis amounted to 313.690 billion kWh, representing a decrease of 2.13% year-on-year. The electricity sold amounted to 295.800 billion kWh, representing a decrease of 2.05% year-on-year. The decrease in the Company's power generation for the year was mainly attributable to the following reasons: (i) the installed capacity growth outpaced the growth of the nationwide power consumption while the utilization hours of coal-fired power generation units saw a year-on-year fall; (ii) the growth of the Company's installed capacity was below the regional average; and (iii) the launch of new nuclear power generators in areas, including Liaoning, Guangdong, Fujian and Hainan provinces, had a relatively great impact on the output of the coal-fired power generation units in these regions.

The annual average utilization hours of the Company's domestic power plants reached 3,921 hours. The utilization hours of coal-fired power generating unit was 4,107 hours. In most of the areas where the Company's coal-fired power plants are located, the utilization hours of the Company was in a leading position.

The power generation of the Company's domestic power plants for the year ended December 31, 2016 is listed below (in billion kWh):

Domestic Power Plant	Power generation in 2016		Power generation in 2015		Change (%)
Liaoning Province
Dalian		5.656		5.921		(4.47	)
Dandong		2.920		3.050		(4.26	)
Yingkou		7.872		7.875		(0.04	)
Yingkou Co-generation		3.028		3.085		(1.84	)
Wafangdian Wind Power		0.098		0.094		4.37
Suzihe Hydropower		0.034		0.051		(32.36	)

100

Domestic Power Plant	Power generation in 2016		Power generation in 2015		Change (%)
Changtu Wind Power		0.199		0.196		1.45
Dandong Photovoltaic		0.009	－		－
Yingkou Co-generation Photovoltaic		0.0071	－		－
Inner Mongolia Autonomous Region
Huade Wind Power		0.218		0.193		12.82
Hebei Province
Shang’an		12.931		12.519		3.29
Kangbao Wind Power		0.116		0.097		19.68
Kangbao Photovoltaic		0.016	－		－
Gansu Province
Pingliang		8.443		6.020		40.24
Jiuquan Wind Power		0.410		0.438		(6.32	)
Jiuquan II Wind Power		0.443		0.444		(0.24	)
Yumen Wind Power		0.169		0.150		12.61
Yigang Wind Power		0.251		0.001		19,611.99
Beijing Municpality
Beijing Co-generation		3.406		3.924		(13.19	)
Beijing Co-generation CCGT		4.136		4.159		(0.54	)
Tianjin Municipality
Yangliuqing Co-generation		5.280		5.427		(2.71	)
Lingang Co-generation CCGT		1.973		1.966		0.35
Shanxi Province
Yushe		2.642		2.750		(3.92	)
Zuoquan		5.519		5.625		(1.89	)
Dongshan CCGT		2.546		1.139		123.53
Shandong Province
Dezhou		13.749		14.388		(4.44	)
Jining		4.733		4.893		(3.27	)
Xindian		3.214		3.158		1.77
Weihai		10.179		10.894		(6.56	)
Rizhao Phase II		7.877		7.499		5.04
Zhanhua Co-generation		1.602		1.503		6.59
Henan Province
Qinbei		17.429		18.710		(6.85	)
Luoyang Co-generation		2.841		1.485		91.3
Luoyang Yangguang		0.742	－		－
Mianchi Co-generation		0.422	－		－
Zhumadian Wind Power		0.019	－		－
Jiangsu Province
Nantong		6.129		6.167		(0.62	)
Nanjing		3.001		2.736		9.68
Taicang		10.507		10.081		4.22
Huaiyin		5.570		5.813		(4.17	)
Jinling CCGT		1.717		2.581		(33.49	)
Jinling Coal-fired		12.766		11.728		8.85
Jinling Co-generation		1.801		1.711		5.26
Rudong Wind Power		0.101		0.095		6.23
Qidong Wind Power		0.394		0.340		15.80
Suzhou Thermal Power		0.784		0.789		(0.67	)
Nanjing Thermal Power		0.168	－		－
Rudong Offshore Wind Power		0.002	－		－
Luhe Wind Power		0.001	－		－

101

Domestic Power Plant	Power generation in 2016		Power generation in 2015		Change (%)
Tongshan Wind Power		0.082	－		－
Shanghai Municipality
Shidongkou I		4.971		5.060		(1.76	)
Shidongkou II		5.385		5.252		2.53
Shidongkou Power		6.133		6.039		1.56
Shanghai CCGT		1.649		1.775		(7.11	)
Chongqing Municipality
Luohuang		8.154		9.767		(16.51	)
Liangjiang CCGT		1.862		0.938		98.50
Zhejiang Province
Yuhuan		18.469		18.957		(2.57	)
Changxing		5.702		5.438		4.85
Tongxiang CCGT		0.518		0.270		91.87
Changxing Photovoltaic		0.009		0.008		13.87
Hongqiao Photovoltaic		0.012	－		－
Hunan Province
Yueyang		7.444		7.859		(5.28	)
Xiangqi Hydropower		0.334		0.363		(7.94	)
Subaoding Wind Power		0.328		0.318		3.03
Guidong Wind Power		0.209		0.069		203.56
Hubei Province
Enshi Maweigou Hydropower		0.178		0.063		182.12
Jingmen Thermal Power		2.335		1.930		20.99
Yingcheng Thermal Power		1.418		1.062		33.50
Wuhan Power Plant		9.850		10.027		(1.77	)
Dalongtan Hydropower		0.116		0.086		35.18
Jieshan Wind Power		0.188		0.054		248.65
Jiangxi Province
Jinggangshan		8.095		8.993		(9.98	)
Jianggongling Wind Power		0.107		0.090		19.14
Ruijin Power		3.060		3.289		(6.95	)
Anyuan Power		6.179		3.015		104.93
Anhui Province
Chaohu Power Plant		5.617		5.847		(3.94	)
Hualiangting Hydropower		0.140		0.129		8.66
Huaining Wind Power		0.089	－		－
Fujian Province
Fuzhou		7.677		10.892		(29.52	)
Guangdong Province
Shantou		4.476		4.550		(1.62	)
Haimen		5.326		7.631		(30.20	)
Haimen Power		7.643		8.770		(12.86	)
Shantou Photovoltaic		0.007	－		－
Yunnan Province
Diandong Energy		3.317		3.994		(16.96	)
Yuwang Energy		0.268		1.585		(83.12	)
Fuyuan Wind Power		0.299		0.147		103.21
Guizhou Province
Panxian Wind Power		0.045		0.0003		16515.56
Hainan Province
Haikou Power Plant		4.842		7.047		(31.30	)
Dongfang Power Plant		6.687		9.081		(26.37	)

102

Domestic Power Plant	Power generation in 2016		Power generation in 2015		Change (%)
Nanshan Power Plant		0.127		0.248		(48.64	)
Gezhen Hydropower		0.164		0.093		75.99
Wenchang Wind Power		0.101		0.099		1.93
Dongfang Photovoltaic		0.008	－		－
Total		3,136.90		320.529		(2.13	)

For the year ended December 31, 2016, the accumulated power generation of Tuas Power Ltd., the Company's wholly owned subsidiary in Singapore, accounted for a market share of 21.5% in Singapore, representing a decrease of 0.2% compared to the same period last year of 21.7%.

In respect of the tariff, the Company's average tariff of domestic power plants for the year ended December 31, 2015 was RMB396.60 per MWh, down by RMB46.66 per MWh from the year ended December 31, 2015. SinoSing Power's average tariff for 2016 was RMB514.00 per MWh, representing a decrease of 17.88% from the same period last year.

In respect of fuel costs, the effective cost controls of the Company contributed to reduced fuel costs of the Company. Compared with 2015, the Company's fuel cost per unit of power sold of domestic power plant decreased by 1.76% to RMB170.62 per MWh.

Combining the foregoing factors, for the year ended December 31, 2016, the Company recorded an operating revenue of RMB113.814 billion, representing a decrease of 11.71% from RMB128.905 billion of last year, and the net profit attributable to equity holders of the Company of RMB8.520 billion, representing a decrease of 37.59% from RMB13.652 billion of last year.

For the year ended December 31, 2016, the net profit attributable to equity holders of the Company from domestic operations was RMB8.760 billion, representing a decrease of RMB4.951 billion from RMB13.711 billion for the same period last year. The decrease was primarily attributable to the decreases of on-grid tariff for coal-fired power generator administered by the NDRC, the decreases of domestic power generation of the Company and the increase of volume of market power transactions. The net loss attributable to equity holders of the Company from its operations in Singapore was RMB240 million, representing an increase of RMB181 million compared to the same period last year.

Operating revenue and tax and levies on operations

Operating revenue mainly consists of revenue from electricity sold. For the year ended December 31, 2016, the consolidated operating revenue of the Company and its subsidiaries amounted to RMB113.814 billion, representing a decrease of 11.71% from RMB128.905 billion for the year ended December 31, 2015. The operating revenue from domestic operations of the Company decreased by RMB13.706 billion over the same period of last year, while the operating revenue generated from newly acquired entities and newly operated generating units was RMB3.525 billion.

In 2016, the operating revenue from the operations of the Company in Singapore decreased by RMB1.385 billion over the same period of last year, which was mainly attributed to the continued oversupply in the Singapore power and natural gas market, causing continued decline of electricity tariff and a drop of the operating revenue.

The following table sets forth the average tariff rate of the Company's power plants, as well as percentage changes from 2015 to 2016.

103

	Average tariff rate (VAT inclusive) (RMB/MWh)
Power Plant	2016		2015		Change (%)
Liaoning Province
Dalian		346.76		375.55		(7.67	)
Dandong		352.52		371.45		(5.10	)
Yingkou		344.71		378.32		(8.88	)
Yingkou Co-generation		331.39		365.04		(9.22	)
Wafangdian Wind Power		603.72		598.12		0.94
Suzihe Hydropower		332.67		329.96		0.82
Changtu Wind Power		626.09		590.93		5.95
Dandong Photovoltaic		950.00		—		—
Yingkon Co-generation Photovoltaic		950.00		—		—
Inner Mongolia Autonomous Region
Huade Wind Power		471.22		520.00		(9.38	)
Hebei Province
Shang’an		358.48		401.79		(10.78	)
Kangbao Wind Power		554.60		538.14		3.06
Kangbao Photovoltaic		784.95		—		—
Gansu Province
Pingliang		207.63		259.51		(19.99	)
Jiuquan Wind Power		367.54		473.12		(22.32	)
Jiuquan II Wind Power		402.36		497.75		(19.16	)
Yumen Wind Power		390.06		472.01		(17.36	)
Yigang Wind Power		447.65		—		—
Beijing Municipality
Beijing Co-generation (Coal-fired)		454.99		480.70		(5.35	)
Beijing Co-generation (Combined Cycle)		687.33		959.91		(28.40	)
Tianjin Municipality
Yangliuqing Co-generation		370.82		416.54		(10.980	)
Lingang Co-generation CCGT		726.44		817.57		(11.15	)
Shanxi Province
Yushe		253.01		334.87		(24.45	)
Zuoquan		252.96		333.25		(24.09	)
Dongshan CCGT		682.40		703.80		(3.04	)
Shandong Province
Dezhou		389.78		445.44		(12.50	)
Jining		372.57		429.20		(13.19	)
Xindian		381.58		432.30		(11.73	)
Weihai		382.53		440.45		(13.15	)
Rizhao Phase II		372.08		422.33		(11.90	)
Zhanhua Co-generation		389.33		424.66		(8.32	)
Henan Province
Qinbei		354.30		401.65		(11.79	)
Luoyang Co-generation		365.91		384.33		(4.79	)
Luoyang  Yangguang		316.83		365.10		(13.22	)
Mianchi Co-generation		328.10		—		—
Zhumadian Wind Power		610.00		—		—
Jiangsu Province
Nantong		407.55		430.98		(5.44	)
Nanjing		400.81		453.08		(11.540	)
Taicang I		349.31		387.68		(9.90	)
Taicang II		349.31		387.68		(9.90	)
Huaiyin		433.30		450.81		3.88
Jinling Coal-fired		348.86		385.24		(9.44	)
Jinling Combined-Circle		708.41		712.13		(0.52	)
Jinling Combined-Cycle Cogeneration		617.12		760.99		(18.91	)

104

	Average tariff rate (VAT inclusive) (RMB/MWh)
Power Plant	2016		2015		Change (%)
Suzhou Thermal Power		453.42		489.38		(7.35	)
Qidong Wind Power		553.91		556.76		(0.51	)
Rudong Wind Power		606.24		610.00		(0.62	)
Nanjing Thermal Power		445.21		—		—
Tongshan Wind Power		610.00		—		—
Shanghai Municipality
Shidongkou I		395.18		435.48		(9.25	)
Shidongkou II		380.60		410.35		(7.25	)
Shanghai CCGT		382.31		937.13		(59.20	)
Shidongkou Power		899.62		427.42		110.48
Chongqing Municipality
Luohuang		376.92		427.84		(11.90	)
Liangjiang CCGT		649.74		872.20		(25.51	)
Zhejiang Province
Yuhuan		403.82		452.99		(10.85	)
Changxing		420.54		487.93		(13.81	)
Tongxiang Combined-cycle		887.70		1,278.17		(0.55	)
Changxing Photovoltaic		1,208.23		1,125.67		7.33
Hongqiao Photovoltaic		980.00		—		—
Hunan Province
Yueyang		449.87		480.55		(6.38	)
Xiangqi Hydropower		610.00		410.00		48.78
Subaoding Wind Power		610.00		611.72		(0.28	)
Guidong Wind Power		404.19		610.00		(33.74	)
Hubei Province
Enshi Maweigou Hydropower		380.43		379.26		0.31
Jingmen Thermal Power		378.97		444.09		(14.66	)
Yingcheng Thermal Power		392.73		477.26		(17.71	)
Wuhan Power		376.53		435.47		(13.53	)
Dalongtan Hydropower		376.38		374.80		0.42
Jieshan Wind Power		610.00		610.00		—
Jiangxi Province
Jinggangshan		399.06		443.73		(10.0	)
Jianggongling Wind Power		610.00		610.00		—
Ruijin Power		399.27		441.24		(9.51	)
Anyuan Power		400.98		424.63		(5.57	)
Anhui Province
Chaohu Power		351.24		409.79		(14.29	)
Hualiangting Hydropower		385.60		392.89		(1.86	)
Huaining Wind Power		610.00		—		—
Fujian Province
Fuzhou		348.95		392.29		(11.05	)
Guangdong Province
Shantou Coal-fired		464.69		498.01		(6.69	)
Haimen		440.21		483.38		(8.93	)
Haimen Power		444.53		485.46		(8.43	)
Shantou Photovoltaic		980.00		—		—
Yunnan Province
Diandong Energy		513.58		435.58		17.91
Yuwang Energy		1,394.49		545.42		155.67
Fuyuan Wind Power		494.71		600.61		(17.63	)

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	Average tariff rate (VAT inclusive) (RMB/MWh)
Power Plant	2016		2015		Change (%)
Guizhou Province
Panxian Wind Power		610.00		—		—
Hainan Province
Haikou		420.45		457.71		(8.14	)
Dongfang		420.90		460.53		(8.61	)
Nanshan Combined Cycle		672.26		629.32		6.82
Gezhen Hydropower		400.07		399.78		0.07
Wenchang Wind Power		609.78		571.95		6.61
Dongfang Photovoltaic		1,010.00		—		—
Domestic total		396.60		443.26		(10.53	)
Singapore
SinoSing Power		514.00		625.88		(17.88	)

Note: The tariff of combined-cycle power plants in Shanghai and Tongxiang consists of on-grid settlement price and capacity subsidy income.

Tax and levies on operations mainly consist of surcharges of value added tax. According to relevant administrative regulations, these surcharges include City Construction Tax and Education Surcharges calculated at prescribed percentages on the amounts of the value-added tax paid. For the year ended December 31, 2016, the tax and levies on operations of the Company and its subsidiaries were RMB1.178 billion, representing an increase of RMB20 million from RMB1.158 billion for the same period of last year, of which the tax and levies on operations attributable to newly acquired entities and new generating units accounted for RMB14 million.

Operating expenses

For the year ended December 31, 2016, the total operating expenses of the Company and its subsidiaries was RMB94.259 billion, representing a decrease of 4.41% from the same period last year. The operating expenses in domestic operations of the Company decreased by RMB2.823 billion, or 3.19%, from the same period last year, of which the newly acquired entities and the new generating units accounted for RMB2.945 billion; the costs attributable to the existing entities decreased by RMB5.768 billion, which was primarily attributable to the decreased fuel costs for domestic operations in China.

The operating expenses from operations in Singapore operations decreased by RMB1.522 billion, or 14.89%, from the same period last year, which was mainly due to the decline of fuel costs resulting from decreased natural gas price.

Fuel costs

Fuel costs account for the majority of the operating expenses for the Company and its subsidiaries. For the year ended December 31, 2016, fuel costs of the Company and its subsidiaries decreased by 4.43% to RMB56.618 billion from the RMB59.242 billion for the year ended December 31, 2015. The fuel costs from domestic operations of the Company and its subsidiaries decreased by RMB1.603 billion, which was primarily attributable to the decreased power generation in the domestic market. The fuel costs of the newly acquired entities and new generating units were RMB2.043 billion and the fuel costs of the existing generating units decreased by RMB3.646 billion from same period last year. Fuel costs in Singapore decreased by RMB1.022 billion from the same period last year, mainly due to decreased fuel costs arising from decreased natural gas prices. For the year ended December 31, 2016, the average price (excluding tax) of natural fuel coal consumed of the Company and its domestic subsidiaries was RMB376.30 per ton, representing a 2.73% increase from RMB366.30 per ton for the year ended December 31, 2015. The fuel cost per unit of power sold by the Company's domestic power plants decreased by 1.76% to RMB170.62/MWh from RMB173.67/MWh in 2015.

Maintenance

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For the year ended December 31, 2016, the maintenance expenses of the Company and its subsidiaries amounted to RMB4.343 billion, representing a decrease of RMB213 million from RMB4.556 billion for the year ended December 31, 2015. The maintenance expenses of the Company's domestic operations decreased by RMB225 million compared to the same period last year. The maintenance expenses of operations in Singapore increased by RMB12 million compared to the same period last year.

Depreciation

For the year ended December 31, 2016, depreciation expenses of the Company and its subsidiaries increased by 2.80% to RMB14.816 billion, compared to RMB14.412 billion in the year ended December 31, 2015; the increase is mainly due to the expansion of the Company's operations. The depreciation expenses of domestic operations increased by RMB397 million compared to the same period last year, of which the depreciation costs incurred by the newly acquired entities and new generating units was RMB605 million. The depreciation expenses of the operations in Singapore increased by RMB7 million compared to the same period last year.

Labor

Labor costs consist of salaries to employees and contributions payable for employees' housing funds, medical insurance, pension and unemployment insurance, as well as training costs. For the year ended December 31, 2016, the labor costs of the Company and its subsidiaries amounted to RMB8.043 billion, representing an increase of RMB291 million from RMB7.752 billion for the year ended December 31, 2015. This is mainly attributable to labor costs of the newly acquired entities and new generating units, which were RMB164 million. Labor costs for Singapore operations increased by RMB14 million compared to the same period last year.

Other operating expenses (including electricity power purchase costs and service fees paid to HIPDC)

Other operating expenses include environmental protection expenses, land fee, insurance premiums, office expenses, amortization, Tuas Power's electricity power purchase costs, impairment losses, government subsidies and net losses on disposal of properties, plant and equipment. For the year ended December 31, 2016, other operating expenses (including electricity power purchase costs and service fees paid to HIPDC) of the Company and its subsidiaries was RMB10.439 billion, representing a decrease of RMB2.203 billion from RMB12.642 billion for the year ended December 31, 2015. The other operating expenses from the Company's domestic operations decreased by RMB1.669 billion; other operating expenses of the existing entities decreased by RMB1.650 billion compared to the same period last year. The impairment loss experienced a decrease of RMB1.886 billion compared to the same period last year.

Other operating expenses of the operations in Singapore decreased by RMB534 million compared to the same period last year. The electricity power purchase cost decreased by RMB523 million compared to the same period last year, which was largely due to the decreased price of electricity in retail business.

Financial expenses

Financial expenses consist of interest expense, bank charges and net exchange differences.

Interest expenses

For the year ended December 31, 2016, the interest expenses of the Company and its subsidiaries were RMB6.818 billion, representing a decrease of 14.20% from RMB7.946 billion for the year ended December 31, 2015. The interest expenses from the Company's domestic operations decreased by RMB1.157 billion. The interest expenses from the newly acquired entities and new generating units were RMB303 million and those incurred by the existing entities in China decreased by RMB1.460 billion, which is largely attributable to decreased benchmark interest rate of RMB. The interest expenses of Singapore operations increased by RMB29 million compared to the same period last year.

Net exchange differences and bank charges

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For the year ended December 31, 2016, the Company and its subsidiaries recorded a net loss of RMB250 million in net exchange losses and bank charges, representing a net loss increase of RMB226 million compared with the net loss of RMB24 million for the year ended December 31, 2015, mainly due to the weakened exchange rate of RMB against U.S. dollar.

The operations in Singapore recorded net gains of RMB50 million from net exchange difference and bank charges, representing a decrease of RMB120 million from the net gains of RMB170 million for the year ended December 31, 2015, mainly due to the strengthened exchange rate of U.S. dollar against Singapore dollar.

Share of profits less losses of associates and joint ventures

For the year ended December 31, 2016, the share of profits less losses of associates and joint ventures was RMB1.299 billion, representing a decrease of RMB227 million from RMB1.526 billion from last year, mainly due to a decreased profit of associates and joint ventures.

Income tax expenses

For the year ended December 31, 2016, the Company and its subsidiaries recognized income tax expense of RMB3.465 billion, representing a decrease of RMB2.234 billion from RMB5.699 billion for the year ended December 31, 2015. The income tax expenses for the domestic operations decreased by RMB2.445 billion primarily attributable to the decrease in pre-tax profit.

The income tax expenses of the operations in Singapore increased by RMB211 million. It is mainly due to RMB204 million of income tax credit granted by Singapore government last year and no such tax credit was granted in the current year.

Net profit, net profit attributable to the equity holders of the Company and non-controlling interests

For the year ended December 31, 2016, the Company and its subsidiaries achieved a net profit of RMB10.348 billion, representing a decrease of RMB6.911 billion, or 40.04% from RMB17.259 billion for the year ended December 31, 2015; the net profit attributable to equity holders of the Company was RMB8.520 billion, representing a decrease of RMB5.132 billion from RMB13.652 billion for the year ended December 31, 2015.

The net profit attributable to equity holders of the Company from its domestic operations decreased by RMB4.951 billion, mainly contributable to lowered on-grid tariff for coal-fired power generators administered by the NDRC, reduced domestic power generation of the Company and increased volume of market power transactions. The net loss attributable to equity holders of the Company from its operations in Singapore was RMB240 million, representing an increase of RMB181 million from the same period last year. This was mainly due to commenced operation of many generators during the recent years, which led to the continued oversupply in the Singapore's power and natural gas market and subsequently continued reduction of power tariff and a marked drop in the profitability of the Company's overseas power generation business.

The Company's recorded net profit attributable to non-controlling interests decreased to RMB1.828 billion for the year ended December 31, 2016 from RMB3.607 billion for the year ended December 31, 2015, mainly attributable to a reduced profit of the Company's non-wholly owned subsidiaries.

C. Financial position

Comparison of assets items

As of December 31, 2017, consolidated total assets of the Company and its subsidiaries were RMB396.590 billion, representing an increase of 25.97% from RMB314.840 billion as of December 31, 2016; total assets of the domestic operations increased by RMB82.072 billion to RMB368.629 billion, including a net increase of RMB70.544 billion in non-current assets, which is mainly attributable to the newly acquired entities and the capital expenditure on construction projects.

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As of December 31, 2017, total assets of the operations in Singapore were RMB27.961 billion, representing a decrease of RMB322 million from the same period last year. Non-current assets decreased by RMB365 million to RMB23.809 billion, primarily attributable to the depreciation of property, plant and equipment.

Comparison of liability items

As of December 31, 2017, consolidated total liabilities of the Company and its subsidiaries were RMB288.975 billion, representing an increase of 35.89% from RMB212.653 billion as of December 31, 2016.

As of December 31, 2017, interest-bearing debts of the Company and its subsidiaries totaled RMB238.039 billion. The interest-bearing debts consist of long-term loans (including those maturing within a year), bonds payable (including those maturing within a year), short-term borrowings, short-term bonds payable and financial leases payable (including those maturing within a year). The interest-bearing debts denominated in foreign currencies amounted to RMB2.660 billion.

As of December 31, 2017, the total liabilities of the operations in Singapore were RMB15.098 billion, representing a decrease of 0.70% from RMB15.205 billion as of December 31, 2016.

Comparison of equity items

Excluding the impact of profit and profit appropriations, total equity attributable to the equity holders of the Company increased as of December 31, 2017, including an increase impact arising from the issuances of unsecured perpetual corporate bonds at face value of RMB5 billion in 25 September 2017, a decrease of post-tax impact of RMB854 million arising from disposal of available-for-sale financial assets and fair value changes of available-for-sale financial assets held by the Company and its subsidiaries, an increase of post-tax impact of RMB0.121 billion arising from changes in other comprehensive income of the Company’s investees accounted for under equity method, an increase of post-tax impact of RMB0.063 billion arising from fair value changes of cash flow hedge instruments, an increase of RMB113 million from translation difference of the financial statements of foreign operations. Non-controlling interests as of December 31, 2017 increased by RMB3.789 billion, due to the non-controlling interests came from newly acquired subsidiaries.

Major financial position ratios

	2017		2016
Current ratio		0.31		0.28
Quick ratio		0.26		0.23
Ratio of liability to shareholders' equity		3.30		2.47
Multiples of interest earned		1.23		2.84

Formula of the financial ratios:

Current ratio = balance of current assets as of the year end / balance of current liabilities as of the year end

Quick ratio = (balance of current assets as of the year end – net inventories as of the year end) / balance of current liabilities as of the year end

Ratio of liabilities to shareholders' equity = balance of liabilities as of the year end / balance of shareholders' equity (excluding non-controlling interests) as of the year end

Multiples of interest earned = (profit before tax + interest expense) / interest expenditure (inclusive of capitalized interest)

The current ratio increased as of December 31, 2017 compared to that of December 31, 2016 mainly due to an increase in current assets especially inventories and other current assets. The ratio of liabilities to equity holders’ equity as of December 31, 2017 increased compared to that of December 31, 2016 mainly due to the increase in loans at the year end. The multiples of interest earned decreased mainly due to reduced pre-tax profit for the year ended December 31, 2017.

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D. Liquidity and cash resources

The primary sources of funding for the Company and its subsidiaries have been cash provided by internal funds from operating activities, short-term and long-term loans and proceeds from issuances of bonds, and the primary use of funds have been for working capital, capital expenditure and repayments of short-term and long-term borrowings.

Cash flows from operating activities

	For the Year Ended December 31,
	2017			2016			2015
	RMB'000			RMB'000			RMB'000
Cash flows from operating activities
Profit before income tax expense		2,801,733			13,813,138			22,958,050
Non-cash items adjustments		28,980,725			21,255,080			24,484,383
Changes in working capital		(718,218	)		1,050,309			1,013,467
Interest received		136,134			84,806			102,813
Income tax expense paid		(2,003,011	)		(4,692,509	)		(6,196,005	)
Net cash provided by operating activities		29,197,363			31,510,824			42,362,708

For the year ended December 31, 2017, net cash provided by operating activities of the Company and its subsidiaries was RMB29.198 billion, representing a decrease of 7.34% from last year, mainly attributable to the comprehensive effect of increased cash outflow for increased fuel price and increased cash inflow for raised power generation and tariff.

For the year ended December 31, 2016, net cash provided by operating activities of the Company and its subsidiaries was RMB31.511 billion, representing a decrease of 25.62% from last year, mainly attributable to reduced operating revenue as a result of a decrease of power generation and tariff. Net cash provided by operating activities in Singapore was RMB772 million.

For the year ended December 31, 2015, net cash provided by operating activities of the Company and its subsidiaries was RMB 42.363 billion, of which RMB 0.871 billion was provided by the operating activities in Singapore.

Cash flows used in investing activities

	For the Year Ended December 31,
	2017			2016			2015
	RMB'000			RMB'000			RMB'000
Cash flows used in investing activities
Payment for the purchase of property, plant and equipment		(25,798,009	)		(20,144,903	)		(24,191,285	)
Proceeds from disposals of property, plant and equipment		286,609			144,346			109,013
Prepayments of land use rights		(213,928	)		(89,430	)		(136,045	)
Payment for the purchase of other non-current assets		(33,498	)		(50,653	)		(6,981	)
Cash dividend received		1,419,380			1,057,642			937,189
Payment for investment in associates and joint ventures		(301,916	)		(276,118	)		(889,780	)
Cash paid for acquiring available-for-sale financial assets		(5,600	)		-			-
Cash consideration paid for acquisitions of subsidiaries, net of cash acquired		(10,817,107	)		157,421			(8,887,882	)
Cash received from disposal of available-for-sale financial assets		2,186,758			1,474,301			-
Cash received from disposal of a subsidiary		530,437			-			-
Others		998,049			77,748			50,759
Net cash used in investing activities		(31,748,825	)		(17,649,646	)		(33,015,012	)

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Net cash used in investing activities was RMB31.749 billion for the end of December 31, 2017, representing an increase of 79.88% from last year, mainly due to consideration paid for newly acquired entities in 2017.

Net cash used in investing activities was RMB17.650 billion for the end of December 31, 2016, representing a decrease of 46.54% from last year, mainly due to consideration paid for newly acquired entities in 2015.

Net Cash used in investing activities was RMB 33.015 billion for the year ended December 31, 2015, mainly attributable to the consideration paid for the Newly Acquired Entities from business combination under common control.

Cash flows from financing activities

	For the Year Ended December 31,
	2017			2016			2015
	RMB'000			RMB'000			RMB'000
Cash flows from financing activities
Issuance of short-term bonds		30,988,679			32,982,340			18,980,000
Repayments of short-term bonds		(47,000,000	)		(25,000,000	)		(18,000,000	)
Proceeds from short-term loans		107,564,128			85,689,874			67,298,044
Repayments of short-term loans		(96,378,054	)		(77,904,489	)		(62,600,955	)
Proceeds from long-term loans		32,706,327			15,978,023			9,943,689
Repayments of long-term loans		(17,390,982	)		(20,702,421	)		(12,799,719	)
Issuance of long-term bonds		7,800,000			4,200,000			-
Repayment of long-term bonds		(3,300,000	)		(11,500,000	)		(5,000,000	)
Interest paid		(10,080,102	)		(7,344,781	)		(8,677,316	)
Net proceeds from the issuance of new H Shares		-			-			4,684,314
Net proceeds from the issuance of perpetual corporate bonds		4,999,950			-			-
Net capital injection from non-controlling interests of the subsidiaries		838,084			285,620			623,107
Dividends paid to shareholders of the Company		(4,352,973	)		(7,206,220	)		(5,535,655	)
Dividends paid to non-controlling interests of the subsidiaries		(2,184,145	)		(2,695,378	)		(2,954,194	)
Proceeds from sales leaseback classified as finance lease		-			-			100,000
Government grants		590,629			233,276			322,011
Payment for finance leasing		(695,019	)		(571,485	)		-
Others		(93,342	)		(46,209	)		(523,985	)
Net cash used in financing activities		4,013,180			(13,601,850	)		(14,140,659	)

Net cash generated from financing activities was RMB4.013 billion, representing an increase of RMB17.615 billion to the net cash outflow, which was RMB13.602 billion, from the same period last year. This was mainly due to the increase of loans and bonds issued by the Company and its subsidiaries in this year as compared to the same period last year.

Net cash used in financing activities was RMB13.602 billion, representing a decrease of 3.81% from last year.

Net cash outflow used in financing activities in 2015 amounted to RMB14.141 billion, which was largely attributable to repayment of short-term and long-term borrowings.

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Cash and cash equivalents

	For the Year Ended December 31,
	2017		2016		2015
	RMB'000		RMB'000		RMB'000
Effect of exchange rate		10,171		72,923		32,846
Net increase / (decrease) in cash and cash equivalents		1,471,889		332,251		(4,760,117	)
Cash and cash equivalents, beginning of the year		7,810,501		7,478,250		12,238,367
Cash and cash equivalents as of the end of the year		9,282,390		7,810,501		7,478,250

As of December 31, 2017, the cash and cash equivalents of the Company and its subsidiaries denominated in Renminbi, Singapore dollar and U.S. dollar were RMB8.130 billion, RMB836 million and RMB316 million, respectively.

As of December 31, 2016, the cash and cash equivalents of the Company and its subsidiaries denominated in Renminbi, Singapore dollar and U.S. dollar were RMB6.620 billion, RMB870 million and RMB320 million, respectively.

As of December 31, 2015, the cash and cash equivalents of the Company and its subsidiaries denominated in Renminbi, Singapore dollar and U.S. dollar were RMB5.788 billion, RMB1.130 billion and RMB0.560 billion, respectively.

Capital expenditure and cash resources

Capital expenditures for infrastructure construction and renovation projects

The capital expenditures for the year ended December 31, 2017 were RMB26.045 billion, mainly for construction and renovation of projects, including RMB1.804 billion for Luoyuan Power project, RMB1.526 billion for Rudong Baxianjiao Offshore Wind Power project, RMB1.250 billion for Beijing Co-generation project, RMB775 million for Yantai Bajiao Co-generation project, RMB513 million for Zhanhua PV project, RMB492 million for Guanyun Co-generation, RMB489 million for Zhanhua New Energy project, RMB485 million for Mianchi Co-generation project, RMB453 million for Fuyuan Wind Power project, RMB422 million for Huaining Wind Power project, RMB420 million for Weishan New Energy project, RMB385 million for Luohuang Power project, RMB382 million for Fengjie Wind Power project, RMB381 million for Jiangxi Renewable Energy project, RMB361 million for Zhongxiang Wind Power project, RMB359 million for Jianchang PV project, RMB344 million for Dongguan Combined Cycle project, RMB343 million for Jiuquan Wind Power II project, RMB335 million for Yingkou Xianrendao Co-generation project, RMB309 million for Dalian Co-generation project, RMB297 million for Yushe PV project, RMB279 million for Laiwu Power project, RMB266 million for Taicang Power project, RMB255 million for Yingkou Power Plant project, RMB254 million for Qinbei Power Plant project, RMB254 million for Shantou Haimen project, RMB244 million for Yueyang Power Plant project, RMB230 million for Suzhou Combined Cycle project, RMB228 million for Luoyuan Port, RMB225 million for Dalian Power Plant project, RMB224 million for Dezhou Power Plant project, RMB204 million for Changxing Power Plant project, RMB200 million for Shidongkou Plant I project, RMB200 million for Weihai Power Plant, RMB196 million for Tongshan Wind Power Project, RMB195 million for Wuhan Power Plant project, RMB189 million for Panxian Wind Power project, RMB177 million for Yingcheng Co-generation project and RMB172 million for Chengmai PV project. The capital expenditures of the Company’s operations in Singapore were RMB181 million. The expenditures on other projects were RMB9.747 billion.

The above capital expenditures are sourced mainly from internal capital, cash flows provided by operating activities, and debt and equity financing.

The Company expects to have significant capital expenditures in the next few years. During the course, the Company will make active efforts to improve project planning process on a commercially viable basis. The Company will also actively develop newly planned projects to pave the way for its long-term growth. The Company

112

expects to finance the above capital expenditures through internal capital, cash flows provided by operating activities, and debt and equity financing.

The cash requirements, usage plans and cash resources of the Company for the next year are as following:

Capital Expenditure Project	Capital expenditure Plan for 2018 (RMB100 million)	Cash resources arrangements	Financing costs and note on use
Thermal power projects	55.07	Including internal cash resources and bank loans	Within the floating range of benchmark lending interest rates of the PBOC
Hydropower projects	0.25	Including internal cash resources and bank loans	Within the floating range of benchmark lending interest rates of the PBOC
Wind power projects	88.70	Including internal cash resources and bank loans	Within the floating range of benchmark lending interest rates of the PBOC
Coal mining projects	6.28	Including internal cash resources and bank loans	Within the floating range of benchmark lending interest rates of the PBOC
Photovoltaic power projects	10.15	Including internal cash resources and bank loans	Within the floating range of benchmark lending interest rates of the PBOC
Port	1.50	Including internal cash resources and bank loans	Within the floating range of benchmark lending interest rates of the PBOC
Technology renovation	33.15	Including internal cash resources and bank loans	Within the floating range of benchmark lending interest rates of the PBOC

Cash resources and anticipated financing costs

The Company expects to finance its capital expenditure and acquisition costs primarily with internal capital, cash flow provided by operating activities, and debt and equity financing.

Good operating results and sound credit status provide the Company with strong financing capabilities. As of December 31, 2017, the undrawn banking facilities available to the Company and its subsidiaries amounted to approximately RMB241.9 billion, which are granted by Bank of China, China Construction Bank and Industrial and Commercial Bank of China, etc.

The Company completed issuances of unsecured super short-term bonds in ten installments on January 13, February 17, March 16, April 14, June 27, August 17, October 18, November 15, November 22 and December 1, 2017, at a principal amount of RMB4 billion, RMB3 billion, RMB3 billion, RMB4 billion, RMB2 billion, RMB4 billion, RMB4 billion, RMB2 billion, RMB1 billion and RMB4 billion with nominal annual interest rates of 3.40%, 3.67%, 3.60% , 3.60%, 4.19%, 3.96%, 4.10%, 4.19%, 4.17% and 4.17%, respectively. Each installment of the notes was denominated in RMB, issued at par value, and would successively mature in 270 days, 270 days, 180 days, 90 days, 150 days, 60 days, 180 days, 180 days, 180 days, and  90 days, respectively, from the value date.

The Company completed issuances of unsecured mid-term notes on July 12, 2017, at a principal amount of RMB5 billion with a nominal annual interest rate of 4.69%. The notes were denominated in RMB, issued at par value, and would mature in five years from the value date.

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The Company completed issuances of unsecured non-public debt financing instruments on July 18, 2017 at a principal amount of RMB500 million with a nominal annual interest rates of 4.75%. The instruments were denominated in RMB, issued at par value, and would mature in three years from the value date.

The Company completed issuances of unsecured perpetual corporate bonds in two installments on 25 September 2017, each at a principal amount of RMB2.5 billion, with nominal initial distribution rates of 5.05% and 5.17%. The perpetual corporate bonds have no fixed maturing date and are callable at the Company’s discretion in whole. The payment of the principal may be deferred for each renewal period as 3 and 5 years.

The Company completed issuance of unsecured corporate bond on November 6, 2017, at a principal of RMB2.3 billion, with a nominal annual interest rate of 4.99%. The bond was denominated in RMB, issued at par value, and would mature in three years from the value date.

As of December 31, 2017, short-term loans of the Company and its subsidiaries totaled RMB80.251 billion (2016: RMB57.669 billion). Loans from banks were charged at interest rates ranging from 3.74% to 5.50% per annum (2016: 2.77% to 4.35% ).

As of December 31, 2017, short-term bonds payable by the Company and its subsidiaries were RMB11.068 billion (2016: RMB27.311 billion).

As of December 31, 2017, long-term loans (including those maturing within a year) of the Company and its subsidiaries totaled RMB125.129 billion (2016: RMB74.551 billion), including RMB denominated borrowings of RMB110.073 billion (2016: RMB58.876 billion), U.S. dollar denominated loans of approximately US$ 348 million (2016: US$410 million), Euro denominated loans of approximately € 30million (2016: €39 million), Singapore dollar denominated loans of S$2.539 billion (2016: S$2.581 billion), and Japanese yen denominated loans of ¥2.593 billion (2016: ¥2.703 billion). Among them, all loans denominated in US dollar and Singapore dollar were floating rate, and loans denominated in all other foreign currencies were fixed rate. As of December 31, 2017, long-term bank loans of the Company and its subsidiaries had interest rates ranging from 0.75% to 6.03% per annum (2016: 0.75% to 5.65%).

The Company and its subsidiaries will closely monitor any change in the exchange rate and interest rate markets and cautiously assess the currency rate and interest rate risks.

Combining the current development of the power generation industry and the growth of the Company, the Company will make continuous efforts to not only meet cash requirements of daily operations, constructions and acquisitions, but also establish an optimal capital structure to minimize the cost of capital and manage financial risks through effective financial management activities, thus maintaining sustainable and stable returns to the shareholders.

Other financing requirements

The objective of the Company is to bring steadily growing returns to equity holders in the long run. In line with this objective, the Company follows a proactive, stable and balanced dividend policy. In accordance with the profit appropriation plan of the board of directors of the Company (subject to the approval at annual general meeting) for 2017, the Company expects to pay a cash dividend of RMB1.520 billion.

Maturity profile of loans and bonds

The following table sets forth the maturity profile of the Company's borrowings as of December 31, 2017.

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Maturity Profile (RMB billion)	2018		2019		2020		2021		2022
Principal amount planned for repayment		113.349		24.729		22.706		19.683		17.656
Interest amount planned for repayment		7.883		4.964		3.900		2.964		2.234
Total		121.232		29.693		26.606		22.647		19.890

E. Trend information

The major trend of the electricity power market

In the electricity market, with consistently favorable economic growth in China, the demand for electricity in 2018 is expected to maintain rapid growth continually. It is predicted by China Electricity Council that in 2018, total electricity consumption nationwide will grow by 5.5%, with a newly installed generation capacity of approximately 120 million kW, of which thermal generation units will represent a reduced percentage from last year. In 2018, annual power generation utilization hours nationwide are expected to be 3,710 hours, and utilization hours of thermal generating units are estimated to be 4,210 hours, generally the same with 2017. Curtailment of hydro, wind and solar generated power is expected to be gradually addressed. The State Electricity Reform will progress steadily, power generation market is in the process of steady and planned liberalization, and medium-to-long term market transactions, cross-provincial and cross-regional transactions, spot transactions of clean energy are further expanded. The five-year winter clean heating initiative in northern China promoted by the government will have considerable power substitution effect.

The trend of the fuel supply

In the fuel market, China will continue implementing policies to phase out obsolete production capacities and release advanced production capacities. It will speed up construction of the northern coal transportation corridors, coordinate efforts on capacity reduction and supply protection, and maintain coal supply and demand balance and price stability. The government will also strive to restore coal price to reasonable range with multiple efforts including accelerated increase of advanced coal production capacities, enhanced enforcement of medium-to-long coal contracts, execution of mutual guaranty agreement among coal producers, transporters and users, and setting up the regulatory system to control minimum and maximum coal inventory.

The trend of capital market and foreign exchange

In the capital market, China has put more emphasis on risk prevention. Prudent monetary policy will have a stabilizing effect on the overall money supply. The credit and capital market will grow at a stable and reasonable pace. China will also strengthen the asset-liability ratio and capital requirements to urge deleveraging by state-owned enterprises. The capital market is expected to see a tight balance, potentially leading to an increase in the cost of capital.

In the Singapore capital market, the SOR interest rate is expected to rise amid interest rate hikes in the U.S., resulting in an increase the financing costs of Tuas Power.

We will closely watch the changes in domestic and overseas capital markets and maintain its good reputation on the capital markets, make reasonable financing arrangements, timely adjust our financing strategy, explore new financing methods, manage the exchange rate fluctuation risks, and strive to control financing costs.

F. Employee benefits

As of December 31, 2017, the Company and its subsidiaries had 53,962 employees within and outside the PRC. The Company and its subsidiaries provide employees with competitive remuneration and link such remuneration to operating results to provide incentives for the employees. Currently, the Company and its subsidiaries do not have any stock or option based incentive plan.

All employees of the Company have entered into labor contracts with the Company. The Company's standard contract includes description of the position, responsibilities, compensations and causes of termination.  The terms of the labor contracts vary and they generally range from one to five years. The contracts are typically renewable upon expiration by mutual agreement of the Company and the relevant employee.

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The Company is unionized, both at its head office and with respect to all power plants.  Labor unions are intended to protect the rights of employees, while allowing the Company to achieve economic objectives. They encourage employees' participation in the Company's decision-making process, and serve as mediators in any dispute between the Company and its employees. The Company has experienced no occurrence of any strike or labor dispute which have impact upon the Company's operations. The Company believes that the Company and its employees are in a good relationship.

Compensation of our employees consists of salaries, bonuses and allowances.  Compensation is linked to performance of the Company as well as the individual employees.  Our employees are also entitled to certain education, healthcare and other benefits and allowances provided by the Company.

The Company maintains social security schemes for its employees pursuant to government regulations. These social security benefits are subject to changes in the relevant law and policy.

Based on the development plans of the Company and its subsidiaries and the requirements of individual positions, together with the consideration of specific characteristics of individual employees, the Company and its subsidiaries tailored various training programs for their employees on management skills, technical skills and marketing skills. These programs have enhanced the comprehensive skills of the employees.

G. Guarantees for loans and restricted assets

As of December 31, 2017, the Company provided guarantees of approximately RMB12.393 billion for the long-term bank loans of Tuas Power.

As of December 31, 2017, the details of secured loans of the Company and its subsidiaries were as follows:

(1) As of December 31, 2017, short-term loans of RMB24 million represented the notes receivable that were discounted with recourse. As these notes receivable had not yet matured, the proceeds received were recorded as short-term loans.

(2) As of December 31, 2017, a long-term loan of approximately RMB4.605 billion of the Company and its subsidiaries were secured by certain property, plant and equipment with net book value of approximately RMB5.166 billion.

(3) As of December 31, 2017, long-term loans of approximately RMB10.559 billion were secured by future electricity and heating revenue of the Company and its subsidiaries.

As of December 31, 2017, the restricted bank deposits of the Company and its subsidiaries were RMB82 million.

As of December 31, 2017, the property, plant and equipment leased under finance lease of the Company and its subsidiaries with net book value amounted to RMB2.565 billion.

H. Off-balance sheet arrangements

As of December 31, 2017, there were no off-balance sheet arrangements which have or are reasonably likely to have an effect on our financial condition, changes in financial condition, revenues or expenses, results of operations, liquidity, capital expenditures or capital resources that are material to investors.

I. Performance of significant investments and their prospects

The Company acquired a 25% equity interest in Shenzhen Energy Group for RMB2.39 billion on April 22, 2003. In 2011, Shenzhen Energy Group divided into a remainder company Shenzhen Energy Group and a new company Shenzhen Energy Management Company, and the Company holds 25% equity interests in each of the two successors. The Company acquired 200 million shares from Shenzhen Energy Corporation ("Shenzhen Energy"), a subsidiary of Shenzhen Energy Group, in December 2007. Shenzhen Energy allotted shares with its capital surplus in 2011. In February 2013, Shenzhen Energy merged Shenzhen Energy Management Corporation through the

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combination of a directional seasoned offering and cash payment to the shareholders of Shenzhen Energy Management Corporation, Shenzhen State-owned Assets Administration Commission and the Company. After the merger, the Company directly held 661 million shares of Shenzhen Energy, representing 25.02% of its equity interests. In 2017, Shenzhen Energy distributed RMB 1.5 of cash dividend out of every 10 shares to its shareholders, and therefore the Company held 992 million shares of Shenzhen Energy by December 31, 2017. These investments brought a net profit attributable to the equity holders of the Company of RMB187 million for the Company for the year ended December 31, 2017 under IFRS. This investment is expected to provide steady returns to the Company.

The Company held 60% direct equity interest in Sichuan Hydropower as of December 31, 2006. In January 2007, Huaneng Group increased its capital investment in Sichuan Hydropower by RMB615 million, thus reducing the Company's equity interest in Sichuan Hydropower to 49% and making Huaneng Group the controlling shareholder of Sichuan Hydropower. This investment brought a net profit attributable to the equity holders of the Company of RMB109 million for the year ended December 31, 2017 under IFRS. This investment is expected to provide steady returns to the Company.

J. Tabular disclosure of contractual obligations and commercial commitments

A summary of payments due by period of our contractual obligations and commercial commitments as of December 31, 2017 is shown in the tables below. A more complete description of these obligations and commitments is included in the Notes to Financial Statements as referenced below.

Contractual Cash Obligations (RMB in millions)	2018		2019-2020		2021-2022		Thereafter		Total
Long-term loans from Huangeng Group and its subsidiaries(1)		2,123		2,971		1,022		1,311		7,427
Long-term bank loans and other loans(1)		15,975		37,664		28,317		35,746		117,702
Long-term bonds(2)		4,000		6,800		8,000		1,200		20,000
Interest payments		5,072		7,600		4,529		37,057		54,258
Operating Lease – Head Office(3)		115		57		0		0		172
Operating Lease – Huabei Branch(3)		6		6		6		6		24
Operating Lease –Shanghai Branch(3)		21		23		23		9		76
Operating Lease –Guangxi Branch(3)		1		1		1		1		4
Operating Lease –Guizhou Branch(3)		2		2		2		2		8
Operating Lease – Nanjing Power Plant(3)		2		2		2		62		68
Operating Lease – Heinongjiang Power(3)		3		-		-		-		3
Operating Lease – Nanjing Xingang Comprehensive Co., Ltd.(3).		6		-		-		-		6
Operating Lease – Hualu Sea Transportation Ltd.(3)		9		-		-		-		9
Operating Lease – Jiangsu Energy Sales Ltd.(3)		1		-		-		-		1
Operating Lease – Tuas Power Generation Pte Ltd.(3)		21		23		25		982		1,051
		27,357		55,149		41,927		76,376		200,809
Other commercial commitments (RMB in millions)		2018		2019-2020		2021-2022	Thereafter		Total
Long – term gas purchase contract(4)		12,876		25,744		25,851		56,845		121,316
Other commitments(3)		-		-		-		-		-
		12,876		25,744		25,851		56,845		121,316

Notes:

(1) See Note 24 to the Financial Statements, "Long-term Loans".

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(2) See Note 25 to the Financial Statements, "Long-term Bonds".

(3) See Note 39 and 43 to the Financial Statements, "Commitments" and "Subsequent Events".

(4) The numbers shown in the table above were calculated based on the minimum purchases stipulated in the long-term gas contracts disclosed in Note 39 to the Financial Statements.

In addition, in accordance with a 30-year operating lease agreement signed by Huaneng Dezhou Power Plant (“Dezhou Power Plant”) and Shandong Land Bureau for the land occupied by Dezhou Power Plant Phases I and II in June 1994, annual rental amounted to approximately RMB30 million effective from June 1994 and is subject to revision at the end of the fifth year from the contract date. Thereafter, the annual rental is subject to revision once every three years. The increment for each rental revision is restricted to no more than 30% of the previous annual rental amount. For the years ended December 31, 2017, 2016 and 2015, the annual rentals were approximately RMB34 million.

The Company and its subsidiaries have various defined contribution plans in accordance with the local conditions and practices in the provinces in which they operate. The Company and its subsidiaries pay fixed contributions into separate entities (funds) and will have no further payment obligations if the funds do not hold sufficient assets to pay all employee benefits relating to employee service in the current and prior periods.

Disclosures of the pension plans, including the contribution amounts, are included in Note 37 to the Financial Statements.

K. Impairment sensitivity analysis

Goodwill impairment

The Company and its subsidiaries conduct impairment test on each individual goodwill at the end of each year. In 2017, the management recognized no goodwill impairment based on the impairment assessment.

For goodwill allocated to CGUs in the PRC, changes of assumptions in tariff and fuel price could have affected the results of goodwill impairment assessment. As at December 31, 2017, if tariff had decreased by 1% or 5% from management's estimates with other variables constant with the expectations, the Company and its subsidiaries would have to recognize impairment against goodwill by approximately RMB681.00 million and RMB3,879 million, respectively. If fuel price had increased by 1% or 5% from the management's estimates with other variables constant with the expectations, the Company and its subsidiaries would have to recognize impairment against goodwill by approximately RMB320.00 million and RMB2,535 million, respectively.

Impairment of other non-current assets

The Company and its subsidiaries will test its property, plant and equipment, land use rights and mining rights suffered any impairment whenever an impairment indication exists.

In 2017, impairment losses for certain property, plant and equipment and land use rights of approximately RMB1,047 million and RMB109 million have been recognized, respectively. Factors leading to the impairment of operating projects primarily included lower utilization hours, shutdown of construction of our coal-fired plant plants and tariff of three coal-fired power plants as a result of over supply of electricity in two provinces, as well as low utilization hours of a hydropower plant as a result of low level of water inflow.

Changes of assumptions in tariff and fuel price will affect the result of property, plant and equipment, land use rights and mining rights impairment assessment. As at December 31, 2017, if tariff had decreased by 1% or 5% from management's estimates with other variables constant with the expectation, the Company and its subsidiaries would have to further recognise impairment against property, plant and equipment and land use rights by approximately RMB165 million and RMB1,165 million, respectively; if fuel price had increased by 1% or 5% from the management's estimates with other variables constant with the expectations, the impairment against property, plant and equipment, land use rights and mining rights of the Company and its subsidiaries would decrease by approximately RMB45 million and RMB478 million, respectively.

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L. Prospects for 2018

In 2018, the Company will implement thoroughly development strategies to cater its needs and will proactively respond to market risks. It will adhere to focus on quality and efficiency so as to further promote quality improvement, efficiency enhancement, transformation and upgrading. The Company will focus on its objective of building a globally leading power generation listed company and continuously improve its business performance, so as to create more values for the nation, the society and its shareholders.

In respect of safe production, the Company will endeavor to prepare and arrange for thorough implementation of the State's reform of and development in promoting safe production. It will consistently launch highly reliable task-specific actions, concretely procure "no unplanned operation suspension" of its power plants and unceasingly enhance the safe and stable operation of generating units. The Company will persistently improve the standard of smart power generation and clean power generation as well as diligently promote energy conservation reform and optimize its operation so as to reinforce its leading position in energy saving and environmental protection areas. The Company will strive for clean, energy-saving and efficient power generation.

In respect of the power market, the Company will actively adapt to the market changes and grasp market opportunities. The Company will carry out a double-edged mechanism by increasing the volume on power generation and enhancing the efficiency in electricity sales, advance the two-dimensional cohesion of power generation and supply of thermal heating, strengthen the coordination of regionalization and information management. The Company will proactively engage in various types of market transactions to ensure its market share being higher than capacity share. The Company will strive for a leading position in the region in terms of utilization hour benchmark and diligently achieve a domestic power generation of 410 billion kWh and average utilization of around 4,000 hours for the year. The Company will demonstrate and build up heat supply operation, continuously enhance heat supply service and increase the contribution of heat supply in the power generation business. The Company will ensure the electricity tariff of new generating units and environmental protection tariff are timely and fully implemented.

In respect of the fuel market, the Company will reinforce policy research and market analysis, and enhance the insights and stability in fuel procurement. The Company will dynamically optimize channels for resources based on the structural outlay and region characteristics of resources. Leveraging on its scale of procurement and centralized management, the Company will strengthen strategic cooperation with large and medium-scale coal enterprises. The Company will stick to the procurement mode of "long-term contract plus spot purchase" and work hard to increase the proportion of long-term contract. The Company will continue to leverage the advantages of its port and shipping resources to establish a firm and effective fuel supply chain. The Company will reinforce the optimization of the coordination in fuel supply and power generation and strengthen the whole process in fuel procurement management so as to achieve a reduction in the fuel cost.

In respect of the capital market, the Company will continue to pursue its objectives of "volume guarantee, risk control and cost reduction" and adhere to traditional credit facility as the major financing channel, further deepen the cooperation between banks and enterprises and ensure the smooth access to credit and finance channels. The Company will expand the scale of direct financing, diversify the varieties of bond financing products and use direct financing as one of the main channels for safeguarding its funds. The Company will innovate equity financing methods so as to optimize capital structure and ensure the safeguard of funds.

The Company will fully reinforce the management of market value and enhance its brand value. The Company will steadily introduce reforms and innovations to strengthen the dynamics for innovation in business development. The Company will safeguard the sound implementation of its various business plans by its solid and efficient basic management standards.

ITEM 6 Directors, Senior Management and Employees

A. Directors, members of the supervisory committee and senior management

Directors

The table below sets forth certain information concerning our directors as of March 31, 2018. The current term for all of our directors is three years commencing from the signing of the director service contracts.

Name	Age	Position with us
Cao Peixi	62	Chairman of the Board of Directors
Liu Guoyue	54	Executive Director, President
Huang Jian	55	Director

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Name	Age	Position with us
Wang Yongxiang	52	Director
Mi Dabin	49	Director
Guo Hongbo	49	Director
Cheng Heng	54	Director
Lin Chong	54	Director
Yue Heng	43	Independent Director
Xu Mengzhou	67	Independent Director
Liu Jizhen	66	Independent Director
Xu Haifeng	62	Independent Director
Zhang Xianzhi	60	Independent Director

CAO Peixi, aged 62, is the Chairman of the Company and Huaneng Group. He graduated from Shandong University, majoring in electrical engineering. He is a postgraduate with master’s degree in engineering awarded by the Party School of the Central Committee, and is a researcher-grade senior engineer.

LIU Guoyue, aged 54, is a Director and the President of the Company, the Vice President of Huaneng Group, an Executive Director of Huaneng International Power Fuel Limited Liability Company, the Chairman of Shanghai Times Shipping Limited Company, a Director of SinoSing Power Pte. Ltd., and the Chairman of Tuas Power Ltd., Tuas Power Supply Pte Ltd., Tuas Power Utilities Pte Ltd., Huaneng Shidaowan Nuclear Power Co., Ltd. and Huaneng Shangdong Shidaowan Nuclear Power Co., Ltd. He graduated from North China Electric Power University, majoring in thermal engineering. He holds a Doctor’s degree in engineering. He is a senior engineer.

HUANG Jian, aged 55, is a Director of the Company, an assistant to the President of Huaneng Group, a Director of Huaneng Capital Services Co., Ltd. and the Chairman of the Supervisory Committee of Huaneng Renewables Corporation Limited. Mr. Huang graduated from the Department of Accounting of Institute of Fiscal Science of the Ministry of Finance with a postgraduate degree of master in economics. He is a senior accountant.

WANG Yongxiang, aged 52, is a Director of the Company, the chairman of HIPDC, the Chief of Power Development Business Division and the Shale Gas Exploitation and Utilization Office, and the president of GreenGen Co., Ltd. He graduated from Tsinghua University where he majored in hydraulic engineering and holds a postgraduate degree of master in engineering.

MI Dabin, aged 49, is a Director of the Company, the Vice President of Hebei Construction & Investment Group Co., Ltd., the Chairman of Hebei Construction & Energy Investment Co., Ltd., the Chairman of Hebei Xingtai Power Generation Limited (河北興泰發電有限責任公司*) and the Vice Chairman of Hebei Guohua Dingzhou Power Generation Co., Ltd. He was the Chief Engineer, Vice President and President of Qinhuangdao Power Generation Co., Ltd., the President of Qinhuangdao Thermal Power Generation Co., Ltd., an assistant to the President and the Head of Production and Operation Department of Hebei Construction & Investment Group Co., Ltd., the President of Qinhuangdao Power Generation Co., Ltd. and Qinhuangdao Thermal Power Generation Co., Ltd. He graduated from North China Electric Power University, majoring in power engineering, and holds a master’s degree. He is a senior engineer.

GUO Hongbo, aged 49 is a Director of the Company, the Chairman of Liaoning Energy Investment (Group) Limited Liability Company, the director of Shenyang Jinshan Energy Limited (沈陽金山能源股份有限公司*), and the vice chairman of Liaoning Haitong New Energy Low-Carbon Industrial Equity Investment Fund Limited ( 遼寧海通新能源低碳產業股權投資基金有限公司*). He was the president and vice chairman of Liaoning Energy Investment (Group) Limited Liability Company. Mr. Guo graduated from Jilin University with a master’s degree in administrative management, and holds an MBA degree. He is a researcher-grade senior engineer.

CHENG Heng, aged 54, is a Director of the Company, the vice president of Jiangsu Provincial Investment Management Co., Ltd., director of Jiangsu Zhenjiang Power Generation Co., Ltd., Jiangsu Yushan Power Generation Co., Ltd. and Jiangsu Huadian Qishuyan Thermal Power Co., Ltd. He previously served as the deputy manager of the Planning Department of Jiangsu International Trust and Investment Corporation, Vice President of

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Changshu Power Generation Co., Ltd., and general manager of Energy Investment Division 2 of Jiangsu Provincial Investment Management Co., Ltd. He is a university graduate College education and an economist.

LIN Chong, aged 54, is a Director of the Company, the Vice President of Fujian Investment & Development Group Co., Ltd., the Chairman of Zhongmin Offshore Wind Power Co., Ltd., the Vice Chairman of Fujian Sanming Nuclear Power Co., Ltd., the Vice Chairman of Chinalco Southeast Copper Co., Ltd., the director of Fujian Motor Industry Group Co., Ltd., the director of Fujian Fuqing Nuclear Power Co., Ltd. and the director of King Long Motor Group. Mr. Lin has formerly served as the assistant to the general manager of Fujian Investment & Development Group Co., Ltd., the Director of the Preparatory Office for Fuzhou Baiyun Pumped Storage Hydropower Station, and the Chairman of Fujian Zhongmin Energy Investment Co., Ltd. He graduated from Chongqing University where he majored in electric power system and its automation and holds a master’s degree of science in engineering (postgraduate diploma). Mr. Lin is a senior engineer.

YUE Heng, aged 43, is an Independent Director of the Company, an Associate Professor of Singapore Management University. He is the winner of the first session of China National Funds for Distinguished Young Scientists, the winner of New Century Excellent Talents of the Ministry of Education 2012, the leading accounting talent of Ministry of Finance, the Councilor of Accounting Society of China and the Deputy Editor-in-Chief of CJAS magazine of Accounting Society of China. He was the Associate Professor, Professor, Dean and Doctorate Mentor of Accounting Department of Guanghua Management School of Peking University. He graduated from Tulane University in the United States with a doctor’s degree in accounting.

XU Mengzhou, aged 67, is an Independent Director of the Company, a professor of Renmin University of China (RUC), an Independent Director of Shandong Hualu-Hengsheng Chemical Co., Ltd. (山東華魯恒升化工股份有限公司) and ENN Ecological Holdings Co. Ltd., (新奧生態控股股份有限公司). He served as a professor of RUC Law School and School of International Studies of Renmin University of China. He graduated from the RUC, with a doctor’s degree in Economic Laws.

LIU Jizhen, aged 66, is an Independent Director of the Company, a Director of the National Key Laboratory of New Energy Power System of North China Electric Power University, a chief scientist of the 973 Program, the Vice President of the China Electricity Council, the Vice President of the Chinese Society for Electrical Engineering, the Vice President of the Chinese Society of Power Engineering, a fellow of the Institution of Engineering and Technology (FIET) and an independent director of Datang International Power Generation Co., Ltd. Mr. Liu was formerly the President of Wuhan University of Hydraulic and Electrical Engineering and the President of North China Electric Power University. He graduated from Huazhong University of Science and Technology in Higher Education. He is a professor, a doctoral supervisor and an academician of the Chinese Academy of Engineering.

XU Haifeng, aged 62, is an Independent Director of the Company. He successively served as the Chairman and President of China Railway Express Co., Ltd., the director and Vice President of Beijing-Shanghai High Speed Railway Co., Ltd., the Managing Commander-in-Chief of the General Headquarters for the Construction of Beijing-Shanghai High Speed Railway of the Ministry of Railways, and the Vice Chairman and President of Beijing-Shanghai High Speed Railway Co., Ltd. He graduated from Beijing Jiaotong University where he majored in transportation organization and automation. He has an EMBA degree from the Guanghua School of Management of Peking University.

ZHANG Xianzhi, aged 60, is an Independent Director of the Company, a professor and a doctoral supervisor of Dongbei University of Finance and Economics. He is serving concurrently as independent director at CGN Nuclear Technology Development Co., Ltd., Dalian Zhiyun Automation Co., Ltd., Yingkou Port Liability Co., Ltd. and Dalian Tianbao Green Foods Co., Ltd. Mr. Zhang was formerly an accountant of Dalian City Transportation Bureau, a researcher of Dalian Economic Commission, professor and vice dean of the accounting school of Dongbei University of Finance and Economics, and director of Sino-German Management and Control Research Centre, etc. He graduated from Dongbei University of Finance and Economics with a major in industrial economics and holds a doctorate degree.

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Supervisors

The table below sets forth certain information concerning our supervisors as of March 31, 2018. The current term for all of our supervisors is three years, which will expire in 2020.

Name	Age	Position with us
Ye Xiangdong	50	Chairman of the Board of Supervisors
Mu Xuan	42	Vice Chairman of the Board of Supervisors
Zhang Mengjiao	53	Supervisor
Gu Jianguo	51	Supervisor
Zhang Xiaojun	51	Supervisor
Zhu Daqing	45	Supervisor

YE Xiangdong, aged 50, is the Chairman of the Supervisory Committee of the Company, the Vice President of Huaneng Group, a Director of HIPDC, the Executive Director of Huaneng Coal Mining Corporation Company and the Chairman of Xi’an Thermal Power Research Institute Co., Ltd. He was the Executive Director and President of Huaneng Hulunbeier Energy Development Company Ltd. and the Chief Engineer of Huaneng Group. He graduated from Chongqing University, majoring in thermal energy, and holds a master’s degree in Engineering. He is a senior engineer.

MU Xuan, aged 42, is the Vice Chairman of the Supervisory Committee of the Company, the Vice President of Dalian Construction Investment Group Co., Ltd., the Director and President of Dalian LNG Pipeline Co., Ltd. He was the assistant to the President of Dalian Construction Investment Co., Ltd. and the assistant to the President of Dalian Construction Investment Group Co., Ltd. He graduated from Dongbei University of Finance and Economics, majoring in Technical Economy and Management. He is a master degree postgraduate and a registered accountant.

ZHANG Mengjiao, aged 53, is a Supervisor of the Company and the Manager of the Finance Department of HIPDC. She was the Deputy Manager of the Finance Department of the Company. She graduated from Xiamen University, majoring in accounting. She is a master’s degree postgraduate in economics and is a senior accountant.

GU Jianguo, aged 51, is a Supervisor of the Company, the Chairman of Nantong Investment & Management Limited Company and the Vice President of Nantong State Owned Assets Investment Holdings Co., Ltd. He was the Chief of Nantong Investment Management Centre, Director and President of Nantong Investment & Management Limited Company. He graduated from Shanghai Jiao Tong University with a master’s degree. He is an economist.

ZHANG Xiaojun, aged 51, is a Supervisor and the Vice Chairman of Labour Union of the Company. She was Deputy Manager of the Administration Department of the Company. She graduated from the Central Party School of the Communist Party of China, majoring in economic management, and holds a bachelor’s degree. She is an accountant.

ZHU Daqing, aged 45, is a Supervisor and the Manager of Auditing Department of the Company. He was Deputy Manager of Finance Department of the Company. He graduated from the Central University of Finance and Economics, and holds a master’s degree in finance & accounting, and a bachelor’s degree in management. He is a senior accountant.

Other Executive Officers

ZHAO Ping, aged 55, is the Vice President of the Company. He was the Chief Engineer of the Company. He graduated from Tsinghua University, majoring in thermal engineering, is a postgraduate with a master’s degree in science. He is a researcher-grade senior engineer.

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ZHOU Hui, aged 54, is the Vice President of the Company. She was the Vice President and Chief Accountant of the Company. She graduated from Renmin University of China, majoring in Financial Accounting, and is a postgraduate with a master’s degree in Economics. She is a senior accountant.

WU Senrong, aged 56, is currently a Party member and the Secretary of the Discipline Inspection commission of the Company. He was the Vice President of the Company. He graduated from the Economic Management School of Tsinghua University with an EMBA degree. He is a researcher-grade senior engineer.

SONG Zhiyi, aged 57, is the Vice President of the Company. He was the Head of Construction Department of Huaneng Group. He graduated from the Guanghua Management Institute of Peking University, with an MBA degree. He is a senior engineer.

LI Jianmin, aged 56, is the Vice President of the Company. He was the Deputy Chief Economist of the Company. He graduated from North China Electricity College, majoring in power plant and electricity system, with a bachelor’s degree in science. He is a researcher grade senior engineer.

LIU Ranxing, aged 55, is the Vice President of the Company. He was the President of Huaneng Energy & Communications Holdings Co., Ltd. He graduated from Harbin Institute of Technology, majoring in management engineering, with a master’s degree in science. He is a researcher-grade senior engineer.

HUANG Lixin, aged 51, is currently the Chief accountant of the Company. He was the Manager of the Finance Department of the Company, and the Head of the Finance Department of Huaneng Group. He graduated from the Economic Management School of Tsinghua University with an EMBA degree. He is a senior accountant.

HE Yong, aged 59, is the Chief Engineer of the Company. He was the Deputy Chief Engineer of the Company. He graduated from Wuhan University, majoring in corporate management, is a postgraduate with a master’s degree in management. He is a researcher-grade senior engineer.

HUANG Chaoquan, aged 52, is currently the Secretary to the Board and Manager of the Corporate Management Department of the Company. He graduated from Harbin University of Science and Technology with a postgraduate degree in Management Engineering. He is a senior economist.

B. Compensation for Directors, Supervisors and Executive Officers

The table below sets forth the compensation on individual basis for the directors, supervisors and other executive officers for the year ended December 31, 2017:

Name	Position with the Company	Pre-tax Remuneration Paid by the Company in 2017(1)
		(RMB in thousand)
Directors
Cao Peixi	Chairman of the Board of Directors	-
Liu Guoyue	Executive Director and President	-
Huang Jian	Director	-
Wang Yongxiang (3)	Director	-
Mi Dabin	Director	24
Guo Hongbo	Director	-
Cheng Heng (3)	Director	-
Lin Chong (3)	Director	-
Yue Heng	Independent Director	74
Xu Mengzhou	Independent Director	74
Liu Jizhen (3)	Independent Director	37
Xu Haifeng (3)	Independent Director	37
Zhang Xianzhi (3)	Independent Director	37

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Guo Junming (6)	Director	-
Fan Xiaxia (8)	Director	-
Li Shiqi (2)	Director	-
Zhu Yousheng (2)	Director	24
Li Song (2)	Director	24
Li Zhensheng (2)	Independent Director	37
Xia Qing (2)	Independent Director	37
Geng Jianxin (2)	Independent Director	37
Sub-total:		442
Supervisors
Ye Xiangdong	Chairman of the Board of Supervisors	-
Mu Xuan	Vice Chairman of the Board of Supervisors	24
Zhang Mengjiao	Supervisor	-
Gu Jianguo	Supervisor	24
Zhang Xiaojun	Supervisor	727
Zhu Daqing	Supervisor	722
Sub-total		1,497
Other Executive officers
Zhao Ping	Vice President	794
Zhou Hui	Vice President	794
Wu Senrong	Head of Discipline Inspection Group	794
Song Zhiyi	Vice President	794
Li Jianmin	Vice President	794
Liu Ranxing	Vice President	792
Huang Lixin	Chief Accountant	791
He Yong	Chief Engineer	794
Huang Chaoquan (4)	Secretary to the Board of Directors	728
Du Daming (5)	Vice President and Secretary to the Board of Directors	132
Gu Biquan (7)	Vice President and General Counsel	528
Sub-total:		7,735
Total		9,637

Notes:

(1) The remuneration paid by the Company in 2017 includes fees, basic salaries, performance salaries and pension. Please see Note 38 to the Item 18 Financial Statements, “Directors’, supervisors’ and senior management’s emoluments”.

(2) The term of Messrs. Li Shiqi, Zhu Yousheng, Li Zhensheng, Xia Qing and Geng Jianxin, and Ms. Li Song ended on June 13, 2017.

(3) Messrs. Wang Yongxiang, Cheng Heng, Lin Chong, Liu Jizhen, Xu Haifeng and Zhang Xianzhi were elected on June 13, 2017.

(4) Mr. Huang Chaoquan was elected on May 22, 2017.

(5) Mr. Du Daming resigned on May 16, 2017 for the position of our VP, and resigned on May 22, 2017 for the position of our director.

(6) Mr. Guo Junming resigned on October 9, 2017.

(7) Mr. Gu Biquan retired on August 31, 2017.

(8) Mr. Fan Xiaxia resigned on February 28, 2018.

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The total remuneration paid to our directors, supervisors and executive officers is comprised of basic salaries, performance salaries and pension. Of these, performance salaries account for approximately 50% of the total remuneration. In addition, directors and supervisors who are also officers or employees of the Company receive certain other benefits, such as subsidized or free health care services, housing and transportation, which are customarily provided by large enterprises in the PRC to their employees. Each of the Company's independent directors receives annual after-tax cash compensation of RMB60,000. We do not have any service contract with any director that provides for benefits upon termination of employment. The Company does not grant options or the stock-based incentive awards to its directors, supervisors and executive officers.

C. Board practice

We, in accordance with the resolutions passed at a shareholders' general meeting, have set up four board committees, namely, the Audit Committee, the Strategy Committee, the Nomination Committee, and the Remuneration and Appraisal Committee, and formulated the working regulations for each committee in accordance with relevant rules and regulations. All committees operate in accordance with the working rules and utilize their members' specific backgrounds, experience and industry expertise to provide advice to the board, so as to enhance our operation efficiency and to make the decision-making process better informed.

The main duties of the Audit Committee are to assist our board in performing its statutory and fiduciary duties of supervising our accounting, financial reporting, internal control and compliance, including but not limited to, assisting our board in ensuring (i) the authenticity of our financial statements; (ii) our compliance with the applicable laws and regulations; (iii) the qualification and independence of our independent auditors; (iv) the performances of our independent auditors and internal auditing department and (v) the control and management of the related-party transactions of the Company.

The main duties of the Strategy Committee are to advise on, and conduct research in relation to, our long-term development strategies and decisions regarding significant investments.

The main duties of the Nomination Committee are to conduct research and provide advice in relation to the requirements for selection of directors and managers and the relevant procedures based on the actual need of our operation, to search for qualified candidates for the positions of director and manager, to examine the candidates for the positions of director and manager and to advise matters in relation thereto.

The main duties of the Remuneration and Appraisal Committee are to conduct research on the appraisal guidelines for directors and managers, to carry out performance appraisals and provide advice accordingly, and to conduct research on the remuneration policies and proposals regarding the directors and senior management.

The members of Audit Committee are Mr. Yue Heng (Chairman), Mr. Xu Mengzhou, Mr. Liu Jizhen, Mr Xu Haifeng and Mr. Zhang Xianzhi.

The members of Strategy Committee are Mr. Liu Guoyue (Chairman), Mr. Huang Jian, Mr. Wang Yongxiang, Mr. Liu Jizhen and Mr. Xu Haifeng.

The members of Nomination Committee are Mr. Liu Jizhen (Chairman), Mr. Mi Dabin, Ms. Lin Chong, Mr. Yue Heng, Mr. Xu Mengzhou and Mr. Zhang Xianzhi.

The members of Remuneration and Appraisal Committee are Mr. Zhang Xiangzhi (Chairman), Mr. Liu Guoyue, Mr. Guo Hongbo, Mr. Cheng Heng, Mr. Yue Heng, Mr. Liu Jizhen and Mr. Xu Haifeng.

D. Employees

As of December 31, 2017, we have 53,962 employees. Of these, 286 are headquarters management staff, 16,147  are power plant personnel directly involved in the management and operation of the power plants, and the remainder is maintenance personnel, ancillary service workers and others. Over 74% our work force graduated from

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university or technical college. As of December 31, 2015 and 2016, we had approximately 42,039 and 42,210 employees, respectively.

We conduct continuing education programs for our employees at our head office and at each power plant. We provide training in foreign language, computer, accounting and other areas to our professionals and technicians in their relevant fields. Employees are trained in accordance with the different requirements for professional and managerial positions.

Our labor force is employed through individual labor contracts. Currently, all employees are employed under labor contracts, which specify the employee's position, responsibilities, remuneration and grounds for termination. Short-term labor contracts have fixed terms of typically one to five years, at the end of which they may be renewed by agreement of both the Company and the employee.

The contract system imposes discipline, provides incentives to adopt better work methods, and provides us with a greater degree of management control over our work force. We believe that, by linking remuneration to productivity, the contract system has also improved employee morale.

Each of our power plants has a trade union and the employees of our headquarters are also members of a trade union. These trade unions protect employees' rights, aim to fulfill our economic objectives, encourage employees to participate in management decisions and mediate disputes between us and union members. We have not been subject to any strikes or other labor disturbances interfering with our operations, and we believe that our relationships with our employees are good.

Total remuneration of our employees includes salaries, bonuses and allowances. The employees also receive certain benefits in the form of education and health services subsidized by the Company and other miscellaneous subsidies.

In compliance with the relevant regulations, we and our employees participate in the local government pension plan under which all the employees are entitled to pension payments upon retirement. See Note 37 to the Financial Statements.

The Company also participates in the social insurance program administered by the social security institution, under which all employees are entitled to certain social insurance benefits, subject to adjustments in accordance with relevant PRC regulations. The Company is in compliance with all social insurance regulations and has no overdue obligations for any social insurance contribution.

E. Share ownership

None of our directors, supervisors or senior management owns any of our shares.

ITEM 7 Major Shareholders and Related Party Transactions

A. Major shareholders

Our outstanding ordinary shares consist of A Shares and H Shares, each with a par value of RMB1.00 per share. The following table sets forth certain information regarding our major shareholders as of March 31, 2018.

Shareholder	Number of shares			Approximate percentage in the total issued domestic share capital %		Approximate percentage in the total issued share capital %
Huaneng International Power Development Corporation		5,066,662,118			48.25		33.33
China Huaneng Group Co. Ltd.(1)		1,629,264,402			15.52		10.72
Hebei Construction & Investment Group Co., Ltd.		527,548,946			5.02		3.47
China Hua Neng Hong Kong Company Limited		472,000,000	(2)		10.04		3.11

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Notes:

(1) Of the 1,629,264,402 shares, 74,139,853 domestic shares through its controlling subsidiary, Huaneng Finance Corporation Limited.

(2) 472,000,000 shares are H Shares and represent 10.04% of the total issued H Shares of the Company and 3.11% of the total issued share capital of the Company.

In 2006, all of our shareholders of non-tradable domestic shares except HIPDC transferred a total of approximately 1.1 billion shares to Huaneng Group, representing 9.24% of our total issued shares. Among others, HPCIC transferred approximately 301 million shares to Huaneng Group, and decreased its shareholdings in the Company to 5.00%.

On April 19, 2006, we carried out our reform plan to convert all non-tradable domestic shares into tradable domestic shares. According to the plan, Huaneng Group and HIPDC transferred a total of 150 million A Shares to our shareholders. As a result, the direct shareholdings of Huaneng Group and HIPDC decreased to 8.75% and 42.03%, respectively.

In June and July of 2008, through its wholly owned subsidiary, China Hua Neng Hong Kong Company Limited, Huaneng Group acquired 20 million H Shares from the open market. As a result, the shareholding of Huaneng Group increased to 8.92%.

In 2010, we increased our share capital through non-public issuances of new shares, including A shares and H Shares. With the approval of shareholders and relevant PRC governmental authorities, we were authorized to issue (i) not exceeding 1,500 million new A shares by way of placement to not more than 10 designated investors, including Huaneng Group, which would subscribe for no more than 500 million new A shares, and (ii) no more than 500 million new H Shares to China Hua Neng Hong Kong Company Limited ("Hua Neng HK"). On December 23, 2010, we completed the non-public issuance of 1,500 million new A shares (ordinary shares with a par value of RMB1 per share) to 10 designated investors, including Huaneng Group, at the issuance price of RMB5.57 per share. The shares subscribed by Huaneng Group are subject to a lock-up period of 36 months.

On December 28, 2010, we completed the placement of 500 million H Shares (ordinary shares with a par value of RMB1 per share) to Hua Neng HK at the subscription price of HK$4.73 per share.

On November 13, 2014, we completed the placement of 365 million H Shares at the price of HK$8.60 per share.

On November 20, 2015, we completed the placement of 780 million H Shares at the price of HK$7.32 per share.

Before we were established in 1994, HIPDC and seven other promoters entered into the Shareholders' Agreement dated May 31, 1994 (the "Shareholders' Agreement") which, among other things, grants to HIPDC the right to vote all the shares owned by each of the other promoters so as to enable HIPDC to have majority voting rights in general meetings for so long as we are in existence. In addition, directors designated by HIPDC will have majority representation on our board of directors and each of the other promoters will have one representative designated by it appointed as a member of our board of directors. The Shareholders' Agreement also provides that for so long as we are in existence (i) HIPDC and the other signatories to the Shareholders' Agreement will maintain their combined shareholdings to ensure their collective majority control of the Company, (ii) HIPDC has certain priority rights to purchase the shares held by the other signatories to the Shareholders' Agreement, (iii) if HIPDC does not exercise its priority rights to purchase such shares, each of the signatories to the Shareholders' Agreement other than HIPDC shall have a priority right to purchase such shares on a pro rata basis, and (iv) no shares may be sold or transferred unless their transferees agree to abide by the terms of the Shareholders' Agreement. As a result of the Shareholders' Agreement, HIPDC holds 70.09% of the total voting rights of the outstanding shares and, subject to the Shareholders' Agreement, has the power to control the election of all of our directors and to direct our management and policies.

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On May 12, 2006, HIPDC and other promoters (including the shareholders who assumed the rights and obligations of original promoters as a result of share transfer) entered into an amendment to the Shareholders' Agreement, pursuant to which each promoter shall be entitled to exercise its own voting rights at the shareholders' general meeting. Consequently, HIPDC currently holds 35.14% of our total voting rights. Since HIPDC's parent company, Huaneng Group, currently holds, directly or indirectly, 14.87% of our total voting rights, HIPDC is able to exert control over us when acting in concert with Huaneng Group.

Huaneng Group and HIPDC had previously given a non-compete undertaking to us during our initial public offering of A shares in 2001, in order to support our business development, to integrate relevant quality assets and to avoid business competition. In September 2010, we received from Huaneng Group an undertaking on relevant matters for further avoidance of business competition. While Huaneng Group will continue to perform its undertakings previously given, Huaneng Group further undertakes that: (i) it shall treat us as the only platform for ultimate integration of the conventional energy business of Huaneng Group; (ii) with respect to the conventional energy business assets of Huaneng Group located in Shandong Province, Huaneng Group undertakes that it will take approximately 5 years to improve the profitability of such assets and when the terms become appropriate, it will invest those assets into us. We have a right of first refusal to acquire from Huaneng Group the newly developed, acquired or invested projects which are engaged in the conventional energy business of Huaneng Group located in Shandong Province; (iii) with respect to the other non-listed conventional energy business assets of Huaneng Group located in other provincial administrative regions, Huaneng Group undertakes that it will take approximately 5 years, and upon such assets meeting the conditions for listing, it will invest such assets into us in order to support our sustainable and stable development; and (iv) Huaneng Group will continue to perform each of its undertakings to support the development of its subordinated listed companies.

On June 28, 2014, pursuant to Guideline No. 4 for the Supervision of Listed Companies No.4 - Commitments and Their Fulfillment by Listed Companies and Their Actual Controllers, Shareholders, Related Parties and Acquirers issued by CSRC, Huaneng Group strengthened its aforementioned non-competing undertaking in the following ways: (i) it shall treat us as the only platform for integrating the conventional energy business of Huaneng Group; (ii) with respect to the conventional energy business assets of Huaneng Group located in Shandong Province, Huaneng Group undertakes that by the end of 2016, it will inject such assets into the our Company when the profitability of such assets has been improved and meets our internal requirements for the listing of our assets, which include clear delineation of assets and shares ownership between our Company and Huaneng Group, absence of decrease in earnings per share of the Company after the injection and any unlawful events of significance, appreciation of state-owned assets, and certain waivers of shareholder rights by Huaneng Group; (iii) with respect to the other non-listed conventional energy business assets of Huaneng Group in other provincial administrative regions, Huaneng Group undertook that by the end of 2016, upon such assets meeting the our aforementioned internal requirements, the Group will inject such assets into the Company, with a view to supporting the Company's continuous and stable development; and (iv) Huaneng Group will continue to perform each of its undertakings to support the development of its subordinated listed companies. The period of such undertakings is between June 28, 2014 and December 31, 2016.

Huaneng Group has diligently examined and analyzed its performance on the 2014 undertakings, of which items (i) and (iv) are long-term undertaking and are being currently performed.

As of December 31, 2016, all coal-fired generation assets of Huaneng Group located in Shandong region under the scope of undertakings had been injected into the Company, thus performance of the undertaking item (ii) was completed within the term of the undertaking period.

As of December 31, 2016, all other non-listed coal-fired power generation assets of Huaneng Group located in provincial administrative regions other than Shandong which met the conditions had been injected into the Company, thus performance of the undertaking item (iii) was completed.

Huaneng Group will continue to perform the undertaking as made previously that it will procure relevant parties such as Huaneng Energy and Transportation (Holding) Company Limited to inject non-listed conventional

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energy assets located in Shandong to the Company within 24 months after completion of the asset disposal transaction announced on 30 September 2017 by Shandong Xinneng Taishan Power Generation Co., Ltd. The Company will be entrusted of such assets if the above mentioned assets fail to meet the conditions for injection into the Company.

B. Related party transactions

Guarantees

The table below sets forth information on guarantees provided by Huaneng Group, HIPDC and the Company to the related parties in 2017 for the purposes of financing their operation, construction and renovation.

Guarantor	Guarantee	Interest Rate	Largest Amount Outstanding in 2017	Amount Outstanding As of December 31, 2017
		(%)	(RMB)	(RMB)
Huaneng Group	Yangliuqing Power Company(1)	2.15	203,803,997.10	172,568,290.63
	Hainan Power	4.17	375,000,000.00	250,000,000
HIPDC	The Company	5.00	2,000,000,000.00	2,000,000,000.00
	Ruijin Power	4.41	142,000,000.00	99,600,000
Company	Tuas Power Company(1)	SIBOR+1.65	11,353,671,769.7	10,807,738,211.2
	Tuas Power Company(1)	SIBOR+1.65	1,664,987,892.01	1,584,928,085.55

Note:

(1) These entities are subsidiaries of the Company

Loans

The table below sets forth the loans made by Huaneng Group, subsidiaries of Huaneng Group, and the Company to the related parties in 2017 for the purposes of financing their operation, construction and renovation.

Lender	Borrower	Interest Rate	Largest Amount Outstanding in 2017	Outstanding Balance as of December 31, 2017
		%	(RMB)	(RMB)
Taishan Power	Taian Power Plant	3.915	300,000,000.00	300,000,000.00
Taishan Power	Huangtai Power Plant	3.915	100,000,000.00	50,000,000.00
Taishan Power	Huaneng Shandong Power	4.1325	150,000,000.00	150,000,000.00
Taishan Power	Jining Co-generation	3.915	60,000,000.00	60,000,000.00
Taishan Power	Liaocheng Co-generation	3.915	200,000,000.00	150,000,000.00
Taishan Power	Rongcheng Wind Power	3.915	44,200,000.00	43,200,000.00
Huaneng Group	The Company	4.75	24,530,000.00	24,530,000.00
Huaneng Group	The Company	4.75	640,694,600.00	640,694,600.00
Xi’an Thermal Power Research Institute	The Company	4.1325	100,000,000.00	100,000,000.00
Huaneng Finance	Weihai Power Plant	3.915	100,000,000.00	100,000,000.00
Huaneng Finance	Huaiyin II Power	3.915	300,000,000.00	300,000,000.00
Huaneng Finance	Suzhou Industrial Park	4.1325	70,000,000.00	70,000,000.00
Huaneng Finance	Qinbei Power Plant	3.915	200,000,000.00	200,000,000.00

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Huaneng Finance	Qinbei Power Plant	4.1325	180,000,000.00	140,000,000.00
Huaneng Finance	Yushe Power Plant	4.1325	330,000,000.00	330,000,000.00
Huaneng Finance	Yueyang Power Plant	4.1325	100,000,000.00	100,000,000.00
Huaneng Finance	Wuhan Power Plant	4.1325	300,000,000.00	300,000,000.00
Huaneng Finance	Yangliuqing Co-generation	4.1325	100,000,000.00	100,000,000.00
Huaneng Finance	Yangliuqing Co-generation	4.1325	200,000,000.00	200,000,000.00
Huaneng Finance	Yangliuqing Co-generation	4.1325	40,000,000.00	40,000,000.00
Huaneng Finance	Taicang Port	4.1325	90,000,000.00	90,000,000.00
Huaneng Finance	Anyuan Power Plant	4.1325	100,000,000.00	100,000,000.00
Huaneng Finance	Anyuan Power Plant	4.1325	50,000,000.00	50,000,000.00
Huaneng Finance	Anyuan Power Plant	4.1325	50,000,000.00	50,000,000.00
Huaneng Finance	Tongxiang CCGT	4.1325	200,000,000.00	200,000,000.00
Huaneng Finance	Xiangqi Hydropower	4.1325	200,000,000.00	200,000,000.00
Huaneng Finance	Xiangqi Hydropower	4.1325	50,000,000.00	50,000,000.00
Huaneng Finance	Xindian Power Plant	4.1325	40,000,000.00	40,000,000.00
Huaneng Finance	Xindian Power Plant	4.1325	40,000,000.00	40,000,000.00
Huaneng Finance	Xindian Power Plant	4.1325	100,000,000.00	20,000,000.00
Huaneng Finance	Xindian Power Plant	4.1325	100,000,000.00	100,000,000.00
Huaneng Finance	Qingdao Port	3.915	60,000,000.00	60,000,000.00
Huaneng Finance	Qingdao Port	4.1325	60,000,000.00	60,000,000.00
Huaneng Finance	Jingmen Thermal Power	4.1325	200,000,000.00	200,000,000.00
Huaneng Finance	Jingmen Thermal Power	4.1325	200,000,000.00	200,000,000.00
Huaneng Finance	Luohuang Power Plant	3.915	50,000,000.00	50,000,000.00
Huaneng Finance	Luohuang Power Plant	3.915	50,000,000.00	50,000,000.00
Huaneng Finance	Luohuang Power Plant	4.1325	100,000,000.00	100,000,000.00
Huaneng Finance	Luohuang Power Plant	4.1325	200,000,000.00	200,000,000.00
Huaneng Finance	Hualiangting Hydropower	4.1325	5,000,000.00	5,000,000.00
Huaneng Finance	Yingcheng Thermal Power	3.915	150,000,000.00	150,000,000.00
Huaneng Finance	Yingkou Xianrendao Co-generation Power	4.1325	15,000,000.00	15,000,000.00
Huaneng Finance	Pingliang Power Plant	4.1325	200,000,000.00	200,000,000.00
Huaneng Finance	Pingliang Power Plant	4.1325	100,000,000.00	100,000,000.00
Huaneng Finance	Pingliang Power Plant	4.1325	100,000,000.00	100,000,000.00
Huaneng Finance	Pingliang Power Plant	4.1325	100,000,000.00	100,000,000.00
Huaneng Finance	Tongwei Wind Power	4.1325	20,000,000.00	20,000,000.00
Huaneng Finance	Luoyang Yangguang Power Plant	4.1325	100,000,000.00	100,000,000.00
Huaneng Finance	Yueyang Xingang Photovoltaic	4.1325	10,000,000.00	10,000,000.00
Huaneng Finance	Shandong Power	3.915	1,650,000,000.00	130,000,000.00
Huaneng Finance	Baiyanghe Power Plant	4.1325	260,000,000.00	220,000,000.00
Huaneng Finance	Baiyanghe Power Plant	4.1325	40,000,000.00	10,000,000.00
Huaneng Finance	Yantai Power Plant	4.1325	100,000,000.00	65,000,000.00
Huaneng Finance	Yantai Power Plant	4.1325	100,000,000.00	100,000,000.00
Huaneng Finance	Yantai Power Plant	4.1325	100,000,000.00	100,000,000.00
Huaneng Finance	Huaneng Shandong Power	4.1325	80,000,000.00	80,000,000.00
Huaneng Finance	Jiaxiang Power Plant	4.1325	50,000,000.00	50,000,000.00
Huaneng Finance	Jiaxiang Power Plant	4.35	100,000,000.00	100,000,000.00
Huaneng Finance	Qufu Co-generation	4.1325	50,000,000.00	50,000,000.00
Huaneng Finance	Qufu Co-generation	4.1325	50,000,000.00	50,000,000.00
Huaneng Finance	Qufu Co-generation	4.1325	100,000,000.00	100,000,000.00
Huaneng Finance	Qufu Co-generation	4.1325	100,000,000.00	100,000,000.00
Huaneng Finance	Qufu Co-generation	4.1325	10,000,000.00	10,000,000.00
Huaneng Finance	Linyi Power Plant	4.1325	10,000,000.00	10,000,000.00
Huaneng Finance	Liaocheng Co-generation	4.1325	50,000,000.00	50,000,000.00
Huaneng Finance	Liaocheng Co-generation	4.1325	110,000,000.00	50,000,000.00

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Huaneng Finance	Liaocheng Co-generation	4.1325	60,000,000.00	10,000,000.00
Huaneng Finance	Liaocheng Co-generation	4.1325	60,000,000.00	60,000,000.00
Huaneng Finance	Liaocheng Co-generation	4.1325	60,000,000.00	60,000,000.00
Huaneng Finance	Liaocheng Co-generation	4.1325	60,000,000.00	60,000,000.00
Huaneng Finance	Heilongjiang Power	4.1325	100,000,000.00	100,000,000.00
Huaneng Finance	Hegang Power Plant	4.1325	100,000,000.00	100,000,000.00
Huaneng Finance	Suzhou CCGT	4.1325	100,000,000.00	100,000,000.00
Huaneng Finance	Suzhou CCGT	4.1325	100,000,000.00	100,000,000.00
Huaneng Finance	Suzhou CCGT	4.1325	100,000,000.00	100,000,000.00
Huaneng Finance	Dalongtan Hydropower	4.5125	25,000,000.00	10,000,000.00
Huaneng Finance	Huaneng Hainan	4.41	126,000,000.00	66,000,000.00
Huaneng Finance	Zhongyuan CCGT	4.5125	300,000,000.00	100,000,000.00
Huaneng Finance	Zhongyuan CCGT	4.5125	300,000,000.00	100,000,000.00
Huaneng Finance	Zhongxiang Hujiawan Wind Power	4.655	200,000,000.00	200,000,000.00
Huaneng Finance	Dongguan CCGT	4.655	188,000,000.00	188,000,000.00
Huaneng Finance	Qingdao Co-generation	4.655	60,000,000.00	59,000,000.00
Huaneng Finance	Qingdao Co-generation	4.655	75,000,000.00	73,000,000.00
Huaneng Finance	Qingdao Co-generation	4.655	65,000,000.00	63,000,000.00
Huaneng Finance	Suizhou Power Plant	4.655	89,280,000.00	89,280,000.00
Huaneng Finance	Muping Wind Power	4.275	10,000,000.00	10,000,000.00
Huaneng Finance	Sishui Photovoltaic	4.275	10,000,000.00	10,000,000.00
Huaneng Finance	Penglai Wind Power	4.275	99,000,000.00	72,000,000.00
Huaneng Finance	Penglai Wind Power	4.275	20,000,000.00	20,000,000.00
Huaneng Finance	Penglai Wind Power	4.275	10,000,000.00	10,000,000.00
Huaneng Finance	Penglai Wind Power	4.41	50,000,000.00	43,000,000.00
Huaneng Finance	Penglai Wind Power	4.41	50,000,000.00	50,000,000.00
Huaneng Finance	Penglai Wind Power	4.41	100,000,000.00	100,000,000.00
Huaneng Finance	Penglai Wind Power	4.513	20,000,000.00	20,000,000.00
Huaneng Finance	Yantai Bajiao	4.655	200,000,000.00	200,000,000.00
Huaneng Finance	Yantai Power Plant	4.5125	100,000,000.00	100,000,000.00
Huaneng Finance	Dongying Wind Power	4.41	256,500,000.00	244,500,000.00
Huaneng Finance	Ruyi Helan Rooftop Photovoltaic	4.41	72,000,000.00	72,000,000.00
Huaneng Finance	Changdao Wind Power	4.5125	27,000,000.00	26,000,000.00
Huaneng Finance	Changdao Wind Power	4.5125	12,000,000.00	12,000,000.00
Huaneng Finance	Jining Yunhe Power Plant	4.5125	300,000,000.00	50,000,000.00
Huaneng Finance	Liaocheng Co-generation	4.5125	100,000,000.00	100,000,000.00
Huaneng Finance	Liaocheng Co-generation	4.5125	60,000,000.00	60,000,000.00
Huaneng Finance	Zhanhua Qingfenghu Photovoltaic	4.41	447,000,000.00	447,000,000.00
Huaneng Finance	Jilin Power	4.275	200,000,000.00	200,000,000.00
Tiancheng Financial Leasing	Yuwang Energy	4.4175	195,500,000.00	189,500,000.00
Tiancheng Financial Leasing	Yuwang Energy	4.4175	196,100,000.00	190,900,000.00
Tiancheng Financial Leasing	Yuwang Energy	4.4175	532,800,000.00	518,400,000.00
Tiancheng Financial Leasing	Yuwang Energy	4.4175	552,800,000.00	538,400,000.00
Tiancheng Financial Leasing	Pingliang Power Plant	4.4175	85,000,000.00	65,000,000.00
Tiancheng Financial Leasing	Pingliang Power Plant	4.4175	232,631,578.94	177,894,736.82
Tiancheng Financial Leasing	Diandong Energy	4.4175	486,500,000.00	468,500,000.00

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Tiancheng Financial Leasing	Diandong Energy	4.4175	291,750,000.00	280,750,000.00
Tiancheng Financial Leasing	Diandong Energy	4.4175	171,700,000.00	165,100,000.00
Tiancheng Financial Leasing	Diandong Energy	4.4175	122,800,000.00	118,400,000.00
Tiancheng Financial Leasing	Rushan Wind Power	4.75	186,000,000.00	171,000,000.00
Tiancheng Financial Leasing	Taian Power Plant	4.0598	190,000,000.00	130,000,000.00
Tiancheng Financial Leasing	Yantai Power Plant	4.0598	333,333,333.33	166,666,666.66
Tiancheng Financial Leasing	Jiaxiang Power Plant	4.4175	333,333,333.32	166,666,666.64
Tiancheng Financial Leasing	Qufu Co-generation	4.4175	650,000,000.00	620,000,000.00

Lease Agreement

On August 2, 2016, we entered into a leasing agreement and a property management agreement with Huaneng Property Co., Ltd., pursuant to which a total area of 30,465.70 square meters in Huaneng Mansion will be leased to us and the annual rent (including the property management fee) is RMB 114.54 million, effective from July 1, 2016 to June 30, 2019.

Transactions with Huaneng Group

On October 14, 2016, we signed an agreement for the transfer of equity interests in certain companies with Huaneng Group (the “Transfer Agreement”) and a profit forecasting compensation agreement with Huaneng Group in Beijing. Pursuant to the transfer agreement, the Company agreed to purchase (i) 80% equity interest of Huaneng Shandong Power Limited; (ii) 100% equity interest of Huaneng Jilin Power Limited; (iii) 100% equity interest of Huaneng Heilongjiang Power Limited; and (iv) 90% equity interest of Huaneng Henan Zhongyuan Gas Power Generation Co., Ltd. from Huaneng Group for the consideration of RMB15,501 million after certain adjustment of the profits generated from the date of valuation to the acquisition date in accordance with the equity transfer agreements. This transaction was considered and approved at the 21st meeting of the Eighth Session of the Board held on October 14, 2016, and was considered and approved at the 2016 Second Extraordinary General Meeting held on November 30, 2016. The acquisition was completed on January 1, 2017, and the total consideration has been settled in cash by  December 31, 2017 after netting off with the receivables due from Huaneng Group.

On December 12, 2017, we entered into the Huaneng Group Framework Agreement with Huaneng Group, for a term commencing on January 1, 2017 and expiring on December 31, 2018. Pursuant to the Huaneng Group Framework Agreement, we will conduct, among other things, the following transactions with Huaneng Group and its subsidiaries and associates: (i) purchase of ancillary equipment and parts; (ii) purchase of fuel and transportation services; (iii) leasing of facilities, land and office spaces; (iv) technical services, engineering contracting services and other services; (v) provision of entrusted sale services; (vi) sale of products; (vii) purchase of electricity; (viii) sale of electricity; and (ix) purchase of heat. Such transactions will be conducted on an on-going basis.

Entrusted Management Agreement with Huaneng Group

On January 29, 2015, we have entered into certain entrusted management agreement with Huaneng Group for a term of three years in connection with mutual management of electricity assets. Services under such entrusted management arrangements include preliminary project planning, annual budget and comprehensive planning, power marketing, production management of power plants, construction management, financial management, human resources and labor wages management, administration management, legal service management, assets operation and shareholding management, risk management and internal control management, information disclosure management, related party transaction management, general supervision, comprehensive affairs management and reporting/co-ordination management. By entering into these entrusted management arrangements, we aim to further improve the overall and management efficiency of our electricity assets in several provinces via the provincial level management system of Huaneng Group.

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Coal purchases and service fee occurred for transportation

In 2016, we paid RMB14,502.83 million, RMB800.98 million, RMB1,467.84 million, RMB1,666.07 million and RMB2,472.71 million, respectively, to China Huaneng Group Fuel Co., Ltd., Huaneng Energy & Communications Holdings Co., Ltd. and its subsidiaries, Rizhao Power Company, Gansu Huating Coal Power Co., Ltd. and Shanghai Time Shipping for coal purchase and service fees incurred for transportation.

In 2017, we paid RMB18,850.31million, RMB435.43 million, RMB1,962.03 million and RMB2,377.30 million, respectively, to China Huaneng Group Fuel Co., Ltd., Huaneng Energy & Communications Holdings Co., Ltd. and its subsidiaries, Gansu Huating Coal Power Co., Ltd. and Shanghai Time Shipping for coal purchase and service fees incurred for transportation.

Transactions with Huaneng Group and HIPDC

On June 21, 2016, we signed a capital increase agreement with Huaneng Group, HIPDC, State Nuclear Power Technology Company (“SNPTC”) and Huaneng Shidaowan Nuclear Power Development Co., Ltd. (“Shidaowan Nuclear”) (“Capital Increase Agreement”). Pursuant to the capital increase agreement, the parties agreed to contribute the new capital in cash in proportion to their original shareholding in Shidaowan Nuclear. The Company agreed to subscribe an aggregate RMB135 million of the new capital of Shidaowan Nuclear; Huaneng Group agreed to subscribe RMB180 million; HIPDC agreed to subscribe RMB135 million; SNPTC agreed to subscribe RMB 150 million. Upon completion of this capital increase, Shidaowan Nuclear’s investing parties and their shareholding percentages are as follows respectively: the Company (22.5%), Huaneng Group (30%), HIPDC (22.5%), and SNPTC (25%).

Transaction with Huaneng Nuclear

On March 22, 2016, we signed a capital increase agreement with Huaneng Nuclear Power Development Company Ltd. (“Huaneng Nuclear”), China National Nuclear Power Co., Ltd. (“China National Nuclear”) and Hainan Nuclear Power Limited Liability Company (“Hainan Nuclear”) (“Capital Increase Agreement”). Pursuant to the capital increase agreement, parties agreed to contribute the new capital in cash in proportion to their original shareholding in Huaneng Nuclear. The Company agreed to subscribe for in aggregate RMB 123.70 million of part new capital of Hainan Nuclear; China National Nuclear agreed to subscribe for RMB210.28 million and Huaneng Nuclear agreed to subscribe for RMB 78,341 million. Upon completion of this capital increase, Hainan Nuclear’s investing parties and their shareholding percentages are respectively as follows: the Company (30%), China National Nuclear (51%) and Huaneng Nuclear (19%).

Transaction with Tiancheng Financial Leasing

On December 5, 2016, we entered into the Financial Leasing Agreement with Huaneng Tiancheng Financial Leasing Co., Ltd., or Tiancheng Financial Leasing, a subsidiary of Huaneng Group, for a term commencing on January 1, 2017 and expiring on December 31, 2019. The Financial Leasing Agreement provided the upper limit of the leasing transaction under the agreement between 2017 through 2019, and requires the internal approval and information disclosure for the proposed transactions. Pursuant to the Financial Leasing Agreement, the maximum outstanding balance of the financial lease, on a daily basis, will not exceed RMB11.000 billion, and the interest, on an annual basis, shall not exceed RMB600 million. As of December 31, 2017, the maximum outstanding balance we had at Tiancheng Financial Leasing was RMB 5.110 billion, and our annual interest was RMB210 million.

Transactions with Huaneng Finance

On December 31, 2016, we entered into the Huaneng Finance Framework Agreement with Huaneng Finance, a subsidiary of Huaneng Group, for a term commencing on January 1, 2017 and expiring on December 31, 2019. Pursuant to the Huaneng Finance Framework Agreement, we will enter into the following transactions with Huaneng Finance: (i) placing cash deposits by us with Huaneng Finance; (ii) provision of discounting services by Huaneng Finance to us; and (iii) provision of loan advancement by Huaneng Finance to us. Such transactions will be

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conducted on an on-going basis and will constitute continuing connected transactions under the Hong Kong Listing Rules. During the period from 2017 to 2019, the maximum outstanding balance of the deposits to be placed with Huaneng Finance under the Huaneng Finance Framework Agreement, on a daily basis, will not exceed RMB13.000 billion. As of December 31, 2017, we placed with Huaneng Finance current deposits of approximately RMB7,507 million, which bore interest rates ranging from 0.35% to 1.485% per annum.

Transaction with Huaneng Energy and Transportation (Holding) Company Limited

On September 28, 2017, one of our subsidiaries entered into a transfer agreement with Huaneng Energy and Transportation (Holding) Company Limited, (“HETHC”). Pursuant to the transfer agreement, the subsidiary transferred 56.53% equity interests we hold in Huaneng Taishan Power Generation Limited (“Taishan Power”) to HETHC at a price of RMB780.78 million. Upon the completion of the transaction, Taishan Power was no longer included in our consolidated financial statements.

Transaction with Hebei Hanfeng Power Generation Limited Liability Company

On September 12, 2017, we entered into an agreement with Hebei Hanfeng Power Generation Limited Liability Company, (“Hebei Hanfeng”) for an effective period from January 1, 2018 to December 31, 2018. Pursuant to the transfer agreement, we and our subsidiaries shall purchase electricity from Hebei Hanfeng and its subsidiary and associates. The cap of the transaction amount for purchase of electricity by us and our subsidiaries from Hebei Hanfeng and its subsidiaries and associates is estimated to be RMB600 million.

Capital increase in Hainan Nuclear

On December 28, 2017, we entered into a capital increase agreement with China Nuclear Power Co., Ltd., Huaneng Nuclear and Hainan Nuclear. Pursuant to the agreement, the existing shareholders of the Hainan Nuclear agreed to subscribe by way of cash for the newly registered capital of Hainan Nuclear in accordance with their respective proportion of shareholding in Hainan Nuclear. We shall pay to Hainan Nuclear an amount of not more than RMB69 million as the consideration of the capital increase. Upon the completion of the capital increase, our proportion of shareholding in Hainan Nuclear shall remain unchanged at 30%.

For a detailed discussion of related party transactions, see Note 36 to the Financial Statements.

C. Interests of experts and counsel

Not applicable.

ITEM 8 Financial Information

A. Consolidated statements and other financial information

See pages F-1 to F-120.

Legal proceedings

As of December 31, 2017, we are not a defendant in any material litigation or arbitration and no litigation or claim of material importance is known to us or any member of the Board of directors of us to be pending or threatened against us.

Dividend distribution policy

Our articles of association clearly define our cash dividend policy, i.e. when our earnings and accumulative undistributable profits for the current year are positive, and on the condition that our cash flow can satisfy our normal operation and sustainable development, we shall adopt a cash dividend appropriation policy on the principle that the cash dividend payout will not be less than 50% of the distributable profit realized in the then-current year's consolidated financial statement.

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In addition, in order to allow all shareholders to better benefit from the development results of the Company, after considering the Company’s strategic planning and development targets, industry development trends and other factors, the Company decided to further increase the proportion of cash dividends to shareholders in the next three years, and accordingly formulated the Shareholders Return Plan for the Next Three Years (2018 to 2020) of Huaneng Power International, Inc. pursuant to relevant regulations. Detailed terms and the proportion of the Company’s cash dividends in the next three years are: when the profit and accumulated undistributed profits in the current year are positive, and on condition that the Company’s cash flow is able to meet the need for its ordinary operation and sustainable development, the Company shall distribute dividends in cash and the annual cash dividend payout shall, in principle, be no less than 70% of the realised distributable profits stated in the consolidated financial statement that year and such dividend shall be no less than RMB0.1 per share.

Our Board of Directors will determine the payment of dividends, if any, with respect to our shares on a per share basis. Any final dividend for a financial year shall be subject to shareholders' approval. The Board may declare interim and special dividends at any time under general authorization by a shareholders' ordinary resolution. A decision to declare or to pay any dividends in the future, and the amount of any dividends, will depend on our results of operations, cash flows, financial condition, future prospects and other factors which our Directors may determine as important.

For holders of our H Shares, cash dividend payments, if any, shall be declared by our Board of Directors in Renminbi and paid in HK Dollars. The depositary will convert the HK Dollar dividend payments and distribute them to holders of ADSs in U.S. dollars, less expenses of conversion.

Dividends may be paid only out of our distributable profits (less allocation to the statutory funds of 10% of our net income determined in accordance with PRC GAAP) and may be subject to any applicable PRC withholding tax. Our Articles of Association limit our distributable profits to the lower of the amounts determined in accordance with PRC GAAP, and IFRS. Subject to the above, we expect to carry a positive, balanced and stable dividend distribution policy.

On 13 March 2018 the Board of Directors proposed a cash dividend of RMB0.1 per share, totaling approximately RMB1,520 million. This proposal is subject to the approval of the shareholders at the annual general meeting.

On 13 June 2017, upon the approval from the annual general meeting of the shareholders, the Company declared 2016 final dividend RMB0.29 (2015: RMB0.47) per ordinary share, totaling approximately RMB4,408 million (2015: RMB7,144 million).

B. Significant changes

Except as disclosed elsewhere in this annual report, we have not experienced any significant changes since the date of our audited consolidated financial statements included in this annual report.

ITEM 9 The Offer and Listing

A. Offer and listing details and markets

The Company's ADSs have been listed on the New York Stock Exchange since October 6, 1994. The table below sets forth, for the periods indicated, the high and low closing prices of the ADSs on the New York Stock Exchange

	Closing Price per ADS
	High		Low
	(US$)		(US$)
2013		49.37		33.83
2014		56.44		31.51
2015		61.13		32.76

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2016		37.79	22.86
2017		31.62	24.42
2016	First Quarter	36.81	29.44
	Second Quarter	37.79	24.61
	Third Quarter	26.36	22.86
	Fourth Quarter	26.04	23.82
2017	First Quarter	29.62	25.31
	Second Quarter	31.62	26.60
	Third Quarter	28.69	24.42
	Fourth Quarter	28.10	24.68
2017	October	26.71	24.68
	November	28.10	25.55
	December	25.50	24.75
2018	January	26.64	25.10
	February	25.77	23.95
	March	26.85	24.78

Source: Reuters

Each ADS represents 40 H Shares. As of March 31, 2018, there were 109 registered holders of American Depositary Receipts evidencing ADS.

On January 21, 1998, we listed our H Shares on the Hong Kong Stock Exchange. On February 26, 1998, we placed 250 million H Shares at the price of HK$4.40 per H Share or US$22.73 per ADS. In May 2004, we effected a two-for-one stock split by way of a stock dividend for all our outstanding shares including H Shares. The table below sets forth, for the periods indicated, the high and low closing prices of H Shares on the Hong Kong Stock Exchange.

		Closing Price per H Share
		High	Low
		(HK$)	(HK$)
2013		9.64	6.21
2014		10.92	6.21
2015		11.76	6.40
2016		7.27	4.46
2017		6.22	4.82
2016	First Quarter	7.12	5.72
	Second Quarter	7.27	4.74
	Third Quarter	5.17	4.46
	Fourth Quarter	5.14	4.61
2017	First Quarter	5.77	4.93
	Second Quarter	6.22	5.18
	Third Quarter	5.60	4.82
	Fourth Quarter	5.59	4.83
2017	October	5.22	4.83
	November	5.59	4.99

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	December	5.05	4.86
2018	January	5.23	4.95
	February	5.08	4.61
	March	5.30	4.91

As of March 31, 2018, there were 464 registered holders of H Shares.

ITEM 10 Additional Information

A. Share capital

Not applicable.

B. Memorandum and articles of association

The following is a brief summary of certain provisions of our Articles of Association, as amended, the Company Law and certain other applicable laws and regulations of the PRC. Such summary does not purport to be complete. For further information, you and your advisors should refer to the text of our Articles of Association, as amended, and to the texts of the applicable laws and regulations.

Objects and Purposes

We are a joint stock limited company established in accordance with the Standard Opinion for Joint Stock Limited Companies (the "Standard Opinion") and certain other relevant laws and regulations of the PRC. We are registered with the PRC State Administration for Industry and Commerce with business license number Qi Gu Guo Zi No. 000496. Article 10 of our Articles of Association provides that our scope of businesses includes, among other things, investment, construction, operation and management of power plants; development, investment and operation of other export-oriented enterprises related to power plants; production and sale of thermal heat and electricity.

Directors

Our directors shall be elected at our shareholders' general meeting. Because the shares do not have cumulative voting rights, a holder of a majority of the shares is able to elect all of the directors. Our directors shall be elected for a term of three years and may serve consecutive terms upon re-election, except that independent directors may only serve a maximum of two consecutive terms of six years. Our directors are not required to hold any shares in us, and there is no age limit requirement for the retirement or non-retirement of our directors.

Where a director is materially interested, directly or indirectly, in a contract, transaction or arrangement (including any proposed contract, transaction or arrangement) with us, he or she shall declare the nature and extent of his or her interests to the board of directors at the earliest opportunity, whether or not such contract, transaction or arrangement is otherwise subject to the approval of the board. A director shall not vote, and shall not be counted in the quorum of the meeting, on any resolution concerning any contract, transaction or arrangement where the director owns material rights or interests therein. A director is deemed to be interested in a contract, transaction or arrangement in which his associate (as defined by Article 133 of the Articles of Association) is interested.

Unless the interested director discloses his interests to the board and the contract, transaction or arrangement in which the director is materially interested is approved by the board at a meeting in which the director neither votes nor is counted in the quorum, such contract, transaction or arrangement may be revoked by us except with respect to a bona fide party thereto who does not have notice of the director's interests.

We are prohibited from making loans or providing guarantees to our directors and their associates except where such loan or guarantee is made or provided under a service contract as approved by our shareholders at the

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shareholders' general meeting and to meet expenditure requirement incurred or to be incurred by the director for the purposes of the Company or for the purpose of enabling the director to perform his or her duties properly.

Matters relating to the remuneration of our directors shall be determined by the shareholders' general meeting.

Dividends

Distribution of dividends may be proposed by our board of directors for approval by an ordinary resolution of our shareholders at the shareholders' general meeting. The Articles of Association allows for cash dividends, stock dividends and combination of cash and stock dividends.

Dividends may only be distributed after allowance has been made for:

· recovery of losses, if any;

· allocations to the statutory surplus reserve fund; and

· allocations to a discretionary surplus reserve fund.

The allocation to the statutory surplus reserve fund is 10% of our net income determined in accordance with the PRC accounting rules. Where the accumulated statutory surplus reserve fund has reached 50% or more of our registered capital, no allocation is needed.

The Articles of Association require that cash dividends and other distribution with respect of H Shares be declared in Renminbi and paid by the Company in U.S. dollars or Hong Kong dollar in terms of the H Shares listed on the Hong Kong Stock Exchange. The Articles of Association further stipulate that for dividends and other distributions paid in currencies other than Renminbi, we shall use an exchange rate equal to the median closing exchange rate of Renminbi for such currencies announced by the PBOC for two working days in the week preceding the date on which such dividends or other distributions are declared.

We will appoint receiving agents to receive, on behalf of the holders of H Shares, any dividend distributions and all other money owing by us in respect of such shares (Receiving Agents). The Receiving Agents will comply with the laws and regulations of the applicable stock exchanges on which our shares are listed. Any Receiving Agent appointed on behalf of the holders of H Shares listed on the Hong Kong Stock Exchange will be a company registered as a trust corporation under the Trustee Ordinance of Hong Kong.

Dividends payments may be subject to PRC withholding tax.

Voting Rights and Shareholders' Meetings

Our board of directors shall convene a shareholders' annual general meeting once every year and within six months from the end of the preceding financial year. Our board shall convene an extraordinary general meeting within two months after the occurrence of any one of the following events:

· where the number of directors is less than the number required by the PRC Company Law or two-thirds of the number specified in our Articles of Association;

· where our unrecovered losses reach one-third of the total amount of our share capital;

· where shareholder(s) holding 10% or more of our issued shares so request(s);

· whenever our board deems necessary or our supervisory committee so requests; or

· other circumstances as provided in the Articles of Association.

Resolutions proposed by shareholder(s) holding 3% or more of the total number of voting shares shall be included in the agenda for the relevant annual general meeting if (i) they are submitted to the board of directors no later than 10 days before the annual general meeting is to be held and (ii) they are matters which fall within the scope of the functions and powers of shareholders' general meeting and have clear subject and concrete terms to be voted upon. The board of directors shall publish a supplementary notice of annual general meeting specifying the

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resolutions proposed to other shareholders. Upon publication of the supplementary notice, no alteration to the proposed resolutions or addition of other proposed resolutions will be accepted.

All shareholders' meetings must be convened by our board by written notice given to shareholders not less than 45 days before the meeting. Based on the written replies received by us 20 days before a shareholders' meeting, we shall calculate the number of voting shares represented by shareholders who have indicated that they intend to attend the meeting. When the number of voting shares represented by those shareholders amounts to more than one-half of our total voting shares, we shall convene the shareholders' general meeting. Otherwise, we shall, within five days before holding the shareholders' general meeting, inform the shareholders again of the motions to be considered and the date and venue of the meeting by way of a public announcement. After the announcement is made, the shareholders' meeting may be convened. The accidental omission by us to give notice of a meeting to, or the non-receipt of notice of a meeting by, a shareholder will not invalidate the proceedings at that shareholders' meeting.

Shareholders at meetings have the power, among other things, to examine and approve our profit distribution plans and plans to recover losses, the annual budget, an increase or reduction of registered share capital, the reports of our board of directors and supervisory committee, the issuance of debentures, and the plans for merger, division, dissolution or liquidation; to elect or remove our directors and supervisors who are not elected as employees' representatives; and to review and amend our Articles of Association. In addition, the rights of a class of shareholders may not be modified or abrogated, unless approved by a special resolution of shareholders at a general shareholders' meeting and by a special resolution of shareholders of that class of shares at a separate meeting. Our Articles of Association enumerate, without limitation, certain amendments which would be deemed to be a modification or abrogation of the rights of a class of shareholders, including increasing or decreasing the number of shares of such class or the number of shares of a class with voting or distribution rights or privileges equal or superior to the shares of such class, removing or reducing rights to receive dividends in a particular currency, and creating shares with voting or distribution rights or privileges equal or superior to the shares of such class.

Each share is entitled to one vote on all such matters submitted to a vote of our shareholders at the shareholders' general meetings, except for meetings of a special class of shareholders where only holders of shares of the affected class are entitled to vote on the basis of one vote per share of the affected class.

Shareholders are entitled to attend and vote at meetings either in person or by proxy. Proxies must be in writing and deposited at our legal address, or such other place as is specified in the meeting notice, not less than 24 hours before the start of the meeting at which the proxy proposes to vote or the time appointed for the passing of the relevant resolution(s). When the instrument appointing a proxy is executed by the shareholder's attorney-in-fact, such proxy when deposited must be accompanied by a notary-certified copy of the relevant power of attorney or other authority under which the proxy was executed.

Except for those actions discussed below which require supermajority votes ("special resolutions"), resolutions of the shareholders are passed by a simple majority of the voting shares held by shareholders who are present in person or by proxy. Special resolutions must be passed by more than two-thirds of the voting shares held by shareholders who are present in person or by proxy.

The following decisions must be adopted by special resolution:

· an increase or reduction of our registered share capital or the issuance of shares, including stock distributions, of any class, warrants and other similar securities;

· issuance of debentures;

· our division, merger, dissolution, liquidation and change of the legal form;

· amendments to our Articles of Association;

· acquisition or disposal of material assets or providing a guarantee in the amount exceeding 30% of our most recent audited total assets within one year;

· adjustments to our profit distribution policy; and

· any other matters our shareholders have resolved by way of an ordinary resolution at a general meeting to be of a nature which may have a material impact on us and should be adopted by special resolution.

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In addition, amendments to the Articles of Association require the approval and consent of the relevant PRC authorities.

All other actions taken by the shareholders, including the appointment and removal of our directors and supervisors and the declaration of cash dividend payments, will be decided by an ordinary resolution of the shareholders.

Any shareholder resolution which is in violation of any laws or regulations of the PRC will be null and void.

Liquidation Rights

In the event of our liquidation, the ordinary shares held by overseas shareholders will rank pari passu with the ordinary shares held by the domestic shareholders, and any of our assets remaining after payments (in order of priority) of (a) the costs of liquidation (b) wages and social insurance fees payable to or for our employees for the past three years prior to the date of liquidation; (c) overdue taxes and tax surcharges, funds and other amounts payable pursuant to the applicable administrative regulations; and (d) bank loans, corporate bonds and other debts, will be divided among our shareholders in accordance with the class of shares and their proportional shareholdings.

Further Capital Call

Shareholders are not liable to make any further contribution to the share capital other than according to the terms, which were agreed to by the subscriber of the relevant shares at the time of subscription.

Increases in Share Capital and Preemptive Rights

The Articles of Association require the approval by a special resolution of the shareholders prior to authorizing, allotting, issuing or granting shares, securities convertible into shares or options, warrants or similar rights to subscribe for any shares or such convertible securities. New issues of shares must also be approved by the relevant PRC authorities.

Shareholders do not have preemptive rights with respect to new issues of shares of the Company.

Reduction of Share Capital and Purchase by Us of Our Shares and General Mandate to Repurchase Shares

We may reduce our registered share capital only upon obtaining the approval of the shareholders by a special resolution and, in certain circumstances, of relevant PRC authorities. The number of H Shares which may be purchased is subject to the Hong Kong Takeovers and Share Repurchase Codes.

Restrictions on Large or Controlling Shareholders

Our Articles of Association provide that, in addition to any obligation imposed by laws and administration regulations or required by the listing rules of the stock exchanges on which our shares are listed, a controlling shareholder shall not exercise his voting rights in a manner prejudicial to the interests of the shareholders generally or of some part of the shareholders:

· to relieve a director or supervisor from his or her duty to act honestly in our best interests;

· to approve the expropriation by a director or supervisor (for his or her own benefit or for the benefit of another person) of our assets in any way, including, without limitation, opportunities which may benefit us; or

· to approve the expropriation by a director or supervisor (for his or her own benefit or for the benefit of another person) of the individual rights of other shareholders, including, without limitation, rights to distributions and voting rights (save according to a restructuring of our company which has been submitted for approval by the shareholders in a general meeting in accordance with our articles of association).

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A controlling shareholder, however, will not be precluded by our Articles of Association or any laws and administrative regulations or the listing rules of the stock exchanges on which our shares are listed from voting on these matters.

A controlling shareholder is defined by our Articles of Association as a shareholder whose capital contribution represents 50% or more of the total capital of our Company, or a shareholder whose shares represent 50% or more of the total issued share capital of our Company, or a shareholder whose capital contribution or shares are less than 50% but obtains significant voting rights to influence the result of the shareholder's general meeting or the resolutions passed thereby.

Disclosure

The Listing Agreement imposes a requirement on us to keep the Hong Kong Stock Exchange, our shareholders and other holders of our listed securities informed as soon as reasonably practicable of any information relating to us and our subsidiaries, including information on any major new developments which are not public knowledge, which:

· is necessary to enable them and the public to appraise the position of us and our subsidiaries;

· is necessary to avoid the establishment of a false market in its securities; and

· might be reasonably expected to materially affect market activity in and the price of its securities.

There are also requirements under the Listing Rules for us to obtain prior shareholders' approval and/or to disclose to shareholders details of certain acquisitions or disposals of assets and other transactions (including transactions with controlling shareholders).

Sources of Shareholders' Rights

The PRC's legal system is based on written statutes and is a system in which decided legal cases have little precedent value. Prior to the effectiveness of the Company Law, the PRC did not have a comprehensive body of laws governing joint stock limited companies. The rights and obligations of our shareholders are principally contained in our constitutive documents and the Standard Opinion, under which we were established. In December 1993, the Standing Committee of the 8th National People's Congress adopted the PRC Company Law, which superseded the Standard Opinion. In accordance with Article 229 of the Company Law, we must comply with the relevant requirements of the Company Law within an unspecified time period. As a result, we amended our Articles of Association pursuant to the Company Law on June 6, 1995. On October 27, 2005, the Company Law was amended by the Standing Committee of the 10th National People's Congress, and came into force on January 1, 2006.

Currently, the primary sources of shareholder's rights are our Articles of Association, as amended, the PRC Company Law and the Listing Rules of the Hong Kong Stock Exchange, which, among other things, impose certain standards of conduct, fairness and disclosure on us, our directors and our controlling shareholders. To facilitate the offering and listing of shares of PRC companies overseas, and to regulate the behavior of companies whose shares are listed overseas, the State Council Securities Committee and the State Commission for Restructuring the Economic System issued on August 27, 1994 the Mandatory Provisions for Articles of Association of Company Listing Overseas (the "Mandatory Provisions"). These Mandatory Provisions become entrenched in that, once they are incorporated into the Articles of Association of a PRC Company, any amendment to those provisions will only become effective after approval by the State-owned Assets Supervision and Administration Commission of the State Council. The Listing Rules require a number of additional provisions to the Mandatory Provisions to be included in the Articles of Association of PRC companies listing H Shares on the Hong Kong Stock Exchange (the "Additional Provisions"). The Mandatory Provisions and the Additional Provisions have been incorporated into our Articles of Association.

In addition, upon the listing of and for so long as the H Shares are listed on the Hong Kong Stock Exchange, we are subject to the relevant ordinances, rules and regulations applicable to companies listed on the Hong Kong Stock Exchange, including the Listing Rules of the Hong Kong Stock Exchange, the Securities (Disclosure of

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Interests) Ordinance (the "SDI Ordinance"), the Securities (Insider Dealing) Ordinance and the Hong Kong Codes on Takeovers and Mergers and Share Repurchases (the "Hong Kong Takeovers and Repurchase Codes").

Enforceability of Shareholders' Rights

There has not been any public disclosure in relation to the enforcement by holders of H Shares of their rights under constitutive documents of joint stock limited companies or the Company Law or in the application or interpretation of the PRC or Hong Kong regulatory provisions applicable to the PRC joint stock limited companies.

The Company Law, as amended in October 2005 and effective in January 2006, has granted shareholders with the rights to bring derivative suits. Within the Company Law, shareholders holding more than 1 percent of the shares of the company for more than 180 consecutive days are entitled to request the supervisory committee (in terms of directors and senior management) or the board of directors (in terms of supervisors) to bring legal proceedings, or bring legal proceedings in their own name on behalf of the company where it is in emergency and the company will be subject to irreparable loss if not to do so, against directors, supervisors or senior management who fail to comply with the laws and regulations or the company's Articles of Association in the course of performing their duties and cause loss to the company;

Our Articles of Association provide that all differences or claims:

· between a holder of H Shares and us;

· between a holder of H Shares and any of our directors, supervisors, general managers or other senior officers; or

· between a holder of H Shares and a holder of domestic ordinary shares, arising from any provision of our Articles of Association, any right or obligation conferred or imposed by the Company Law or any other relevant law or administrative regulation which concerns our affairs

must, with certain exceptions, be referred to arbitration at either the China International Economic and Trade Arbitration Commission in the PRC or the Hong Kong International Arbitration Center. Our Articles of Association provide that such arbitration will be final and conclusive. In June 1999, an arrangement was made between the People's Courts of the PRC and the courts of Hong Kong to mutually enforce arbitration rewards rendered in the PRC and Hong Kong according to their respective laws. This new arrangement was approved by the Supreme Court of the PRC and the Hong Kong Legislative Council and became effective on February 1, 2000.

The holders of H Shares will not be able to bring actions on the basis of violations of the Listing Rules and must rely on the Hong Kong Stock Exchange to enforce its rules. The SDI Ordinance establishes certain obligations in relation to disclosure of shareholder's interests in Hong Kong listed companies, the violation of which is subject to prosecution by the Securities and Futures Commission of Hong Kong. The Hong Kong Takeovers and Repurchase Codes do not have the force of law and are the only standards of commercial conduct considered acceptable for takeover and merger transactions and share repurchases in Hong Kong as established by the Securities and Futures Commission and the securities and futures industry in Hong Kong.

We have appointed CT Corporation System, New York, as our agent to receive service of process with respect to any action brought against us in certain courts in New York under the United States federal and New York State's securities laws. However, as the PRC does not have treaties providing for the reciprocal recognition and enforcement of judgments of courts within the United States, the United Kingdom, Japan or most other of the Organization for Economic Cooperation and Development countries, administrative actions brought by regulatory authorities, such as the Commission, and other actions which result in foreign court judgments, could (assuming such actions are not required by PRC law and the Articles of Association to be arbitrated) only be enforced in the PRC on a reciprocal basis or according to relevant international treaties to which China is a party if such judgments or rulings do not violate the basic principles of the law of the PRC or the sovereignty, security and public interest of the society of the PRC, as determined by a People's Court of the PRC which has the jurisdiction for recognition and enforcement of judgments. We have been advised by our PRC counsel, Haiwen & Partners, that there is uncertainty as to the enforceability in the PRC of actions to enforce judgments of United States courts arising out of or based on

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the ownership of H Shares or ADSs, including judgments arising out of or based on the civil liability provisions of United States federal or state securities laws.

Restrictions on Transferability and the Share Register

As provided in the Articles of Associations we may refuse to register a transfer of H Shares listed on Hong Kong Stock Exchange unless:

· a fee (for each instrument of transfer) of HK dollar 2.50, or any higher fee as agreed by the Hong Kong Stock Exchange, has been paid to us;

· the instrument of transfer only involves H Shares;

· the stamp duty chargeable on the instrument of transfer has been paid;

· the relevant share certificate and upon the reasonable request of the board of directors, any evidence in relation to the right of the transferor to transfer the shares have been submitted;

· if it is intended to transfer the shares to joint owners, then the maximum number of joint owners must not exceed four;

· we do not have any lien on the relevant shares.

We are required to maintain an original share register for holders of H Shares in Hong Kong and a copy of the register at our legal address. Shareholders have the right to inspect and, for a reasonable charge, to copy the share register. No transfers of ordinary shares shall be recorded in our share register within 20 days prior to the date of a shareholders' general meeting or within 5 days prior to the record date established for the purpose of distributing a dividend.

We have appointed Hong Kong Registrars Limited to act as the registrar of our H Shares. This registrar maintains our register of holders of H Shares in Hong Kong and enters transfers of shares in such register upon the presentation of the documents described above.

C. Material contracts

See "Item 7. Major Shareholders and Related Party Transactions — B. Related Party Transactions" for certain arrangements we have entered into with HIPDC and Huaneng Group.

D. Exchange controls

The existing foreign exchange regulations have significantly reduced government foreign exchange controls for transactions under the current account, including trade and service related foreign exchange transactions and payment of dividends. We may undertake current account foreign exchange transactions without prior approval from the State Administration of Foreign Exchange or its local branch offices. The PRC Government has stated publicly that it intends to make the Renminbi freely convertible in the future. However, we cannot predict whether the PRC Government will continue its existing foreign exchange policy and when the PRC Government will allow free conversion of Renminbi to foreign currency.

Foreign exchange transactions under the capital account, under most circumstances, including principal payments in respect of foreign currency-denominated obligations, continue to be subject to significant foreign exchange controls and require the approval of the State Administration of Foreign Exchange or its local branch offices. These limitations could affect our ability to obtain foreign exchange through debt or equity financing, or to obtain foreign exchange for capital expenditures.

The conversion of Renminbi into foreign currencies, including U.S. dollars, is based on rates set by the PBOC. On July 21, 2005, the PRC government introduced a floating exchange rate system to allow the value of Renminbi to fluctuate within a regulated band based on market supply and demand and by reference to a basket of foreign currencies. Renminbi appreciated by more than 20% against the U.S. dollar between July 2005 and July 2008. Between July 2008 and June 2010, this appreciation halted and the exchange rate between the Renminbi and the U.S. dollar remained within a narrow band. On June 19, 2010, the PBOC decided to further promote the reform

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of the Renminbi exchange rate formation mechanism, and improve the flexibility of the Renminbi exchange rate. Since June 2010, Renminbi has regained steady appreciation against the U.S. dollar, which was reversed by slight depreciation of the Renminbi against the U.S. dollar at the turn to and early 2014. On March 15, 2014, the PBOC announced to further widen the Remninbi's daily trading band against the U.S. dollar from 1% to 2% on either side of the daily reference rate, allowing for greater fluctuations of the exchange rate. It is difficult to predict how market forces or PRC or U.S. government policy may impact the exchange rate between the Renminbi and the U.S. dollar in the future. There remains significant international pressure on the PRC Government to further liberalize its currency policy, which could result in further fluctuations in the value of the Renminbi against the U.S. dollar. However, there is no assurance that there will not be a devaluation of Renminbi in the future. If there is such a devaluation, our debt servicing cost will increase and the return to our overseas investors may decrease.

The following table sets forth information concerning exchange rates between the Renminbi and the U.S. dollar for the periods indicated:

	Noon Buying Rate
Period	End		Average(1)		High		Low
	(RMB per US$1.00)
2012		6.2301		6.2990		6.3879		6.2221
2013		6.0537		6.1412		6.2438		6.0537
2014		6.2046		6.1704		6.2591		6.0402
2015		6.4778		6.2869		6.4896		6.1870
2016		6.9430		6.6549		6.9580		6.4480
2017		6.5063		6.7350		6.9575		6.4773
October		6.6328		6.6254		6.6533		6.5712
November		6.6090		6.6200		6.6385		6.5967
December		6.5063		6.5932		6.6210		6.5063
2018
January		6.2841		6.4233		6.5263		6.2841
February		6.3280		6.3183		6.3471		6.2649
March		6.2726		6.3174		6.3565		6.2685
April (through April 6, 2018)		6.3045		6.2960		6.3045		6.2785

Source: Federal Reserve Statistical Release, Board of Governors of the Federal Reserve System.

Note:

(1) Annual averages are calculated by using the average of the exchange rates on the last day of each month during the relevant year. Monthly averages are calculated by using the average of the daily rates during the relevant month.

E. Taxation

The following is a summary of (i) certain tax consequences from acquiring, owning and disposing of the H Shares and ADSs based on tax laws of the PRC, the United States and the Income Tax Treaty between the PRC and the United States (the "Tax Treaty") as in effect on the date of this annual report, and is subject to changes in PRC or United States law, including changes that could have retroactive effect, and (ii) the principal PRC taxes to which we are subject. The following summary does not take into account or discuss the tax laws of any countries or regions other than the PRC and the United States, nor does it take into account the individual circumstances of an investor. This summary does not purport to be a complete technical analysis or examination of all potential tax effects relevant to an investment in the H Shares or ADSs and current and prospective investors in all jurisdictions of the H Shares or ADSs are advised to consult their tax advisors as to PRC, United States or other tax consequences of the purchase, ownership and disposition of the H Shares or ADSs. This summary also does not purport to be a complete technical analysis or examination of all potential PRC taxes that may be levied upon us.

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PRC tax considerations

Tax on dividends

Individual investors

According to the current PRC tax regulations, dividends paid by PRC companies to individual investors are ordinarily subject to a PRC withholding tax levied at a flat rate of 20%. For a foreign individual who has no domicile or does not stay in the territory of China or who has no domicile but has stayed in the territory of China for less than one year, the receipt of dividends from a company in China is normally subject to a withholding tax of 20% unless reduced or exempted by applicable laws and tax treaties.

Enterprises

In accordance with the New Enterprise Income Tax Law that became effective on January 1, 2008, dividends derived from the revenues accumulated from January 1, 2008 and as amended on February 24, 2017 and paid by PRC companies to non-resident enterprises are generally subject to a PRC withholding tax levied at a rate of 10% unless exempted or reduced pursuant to an applicable double-taxation treaty or other exemptions. Dividends paid by PRC companies to resident enterprises, including enterprises established under the laws of non-PRC jurisdictions but whose "de facto management body" is located in the PRC, are not subject to any PRC withholding tax, unless the dividends are derived from the publicly traded shares which have not been held continuously by the resident enterprises for twelve months. According to the Notice on the Issues Concerning Withholding the Enterprise Income Tax on the Dividends Paid by Chinese Resident Enterprise to H Share Holders Which Are Overseas Non-resident Enterprises issued by the State Administration of Taxation on November 6, 2008, Chinese resident enterprises are required to withhold PRC enterprise income tax at the rate of 10% on dividends paid for 2008 and later years payable to their respective H Shares holders who are non-resident enterprises.

Capital gains tax on sales of shares

In accordance with the New Enterprise Income Tax Law, capital gains realized by foreign enterprises which are non-resident enterprises in China upon the sale of overseas shares are generally subject to a PRC withholding tax levied at a rate of 10%, unless exempted or reduced pursuant to an applicable double-taxation treaty or other exemptions. The capital gains realized by resident enterprises, including enterprises established under the laws of non-PRC jurisdictions but whose "de facto management body" is located in the PRC, upon the sales of overseas shares are subject to the PRC enterprise income tax.

Tax treaties

Non-PRC Investors residing in countries which have entered into double-taxation treaties with the PRC may be entitled to a reduction of the withholding tax imposed on the payment of dividends to such Foreign Holders of us. The PRC currently has double-taxation treaties with a number of countries, including Australia, Canada, France, Germany, Japan, Malaysia, the Netherlands, Singapore, the United Kingdom and the United States.

Stamp tax

Under the Provisional Regulations of The People's Republic of China Concerning Stamp Tax, which became effective in October 1988, PRC stamp tax should not be imposed on the transfer of H Shares or ADSs of PRC publicly traded companies.

Taxation of the Company

Income tax

Prior to January 1, 2008, according to the relevant income tax law, foreign invested enterprises were, in general, subject to a statutory income tax of 33% (30% enterprise income tax and 3% local income tax). If these

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enterprises are located in certain specified locations or cities, or are specifically approved by the State Administration of Taxation, a lower tax rate would be applied. Effective from January 1, 1999, in accordance with the practice notes on the PRC income tax laws applicable to foreign invested enterprises investing in energy and transportation infrastructure businesses, a reduced enterprise income tax rate of 15% (after the approval of State Administration of Taxation) was applicable across the country. We applied this rule to all of our wholly owned operating power plants after obtaining the approval of the State Administration of Taxation. In addition, certain power plants were exempted from the enterprise income tax for two years starting from the first profit-making year, after offsetting all tax losses carried forward from the previous years (at most of five years), followed by a 50% reduction of the applicable tax rate for the next three years. The statutory income tax was assessed individually based on each of their results of operations.

On March 16, 2007, the Enterprise Income Tax Law of PRC, or the New Enterprise Income Tax Law, was enacted, and became effective on January 1, 2008. The New Enterprise Income Tax Law imposes a uniform income tax rate of 25% for domestic enterprises and foreign invested enterprises. Therefore, our power plants that were subject to a 33% income tax rate prior to January 1, 2008 are subject to a lower tax rate of 25% starting on January 1, 2008. With regard to our power plants entitled to a reduced enterprise income tax rate of 15% prior to January 1, 2008, their effective tax rate is being gradually increased to 25% within a five-year transition period commencing on January 1, 2008. Accordingly, the effective tax rate of our wholly owned power plants will increase over time. In addition, although our power plants entitled to tax exemption and reduction under the income tax laws and regulations that are effective prior to the New Enterprise Income Tax Law will continue to enjoy such preferential treatments until the expiration of the same, newly established power plants will not be able to benefit from such tax incentives, unless they can satisfy specific qualifications, if any, provided by then effective laws and regulations on preferential tax treatment.

Pursuant to Measures for the Collection and Administration of Consolidated Payment of Enterprises Income Tax on Trans-Regional Operation, effective on January 1, 2013, the Company and its branches calculate and pay income tax on a combined basis according to relevant tax laws and regulations. The income tax of subsidiaries remains to be calculated individually based on their individual operating results.

Value-added tax

Since January 1, 1994, the government has implemented a turnover tax system applicable to FIEs. Under the turnover tax provisions, we have to collect from our electricity customers and pay to the PRC tax authorities a value-added tax ("VAT") on our sales. The tax rate on sales of electricity by us is 17% of total sales. The amount of VAT payable by us is the VAT on sales reduced by the VAT paid by us on our purchases of coal, fuel and other inputs.

Effective from January 1, 2009, VAT payers are allowed to credit against output VAT in respect of input VAT on fixed assets purchased or self-manufactured based on the relevant VAT credit receipts in accordance with the revised VAT regulations and its implementation rules.

In addition, effective from August 1, 2012, according to the relevant regulations of Ministry of Finance of PRC and State Administration of Taxation, nine pilot regions including Shanghai, Beijing, Tianjin, Jiangsu Province, Anhui Province, Zhejiang Province, Fujian Province, Hubei Province and Guangdong Province have been under the pilot program for the transformation from Business Tax to VAT since January 1, 2012 and all other regions have been since August 1, 2013 for specified industry. The applicable tax rate of VAT for the Company and its subsidiaries in respect of the lease of tangible movable properties, transportation industry and other modern services industries are 17%, 11% and 6%, respectively.

On March 23, 2016, the Ministry of Finance of PRC and the State Administration of Taxation issued the Circular of Full Implementation of Business Tax to VAT Reform which confirms that business tax will be completely replaced by VAT from May 1, 2016. With effect from May 1, 2016, our income is only subject to VAT and not business tax.

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United States federal income tax considerations

The following discussion is a summary of United States federal income tax considerations relating to the ownership and disposition of our H Shares or ADSs by a U.S. Holder (as defined below). This discussion is based upon existing United States federal income tax law, which is subject to differing interpretations or change, possibly with retroactive effect. This discussion does not address all aspects of United States federal income taxation which may be important to particular holders in light of their particular circumstances, such as holders subject to special tax rules including: banks or other financial institutions, insurance companies, broker-dealers, traders in securities that elect mark-to-market treatment, partnerships and their partners, regulated investment companies, real estate investment trusts, cooperatives, pension plans, tax-exempt organizations (including private foundations), holders who are not U.S. Holders, holders who own (directly, indirectly, or constructively) 10% or more of the voting power or value of our stock, holders that hold H Shares or ADSs as part of a straddle, hedge, conversion, constructive sale, or other integrated transaction for United States federal income tax purposes, holders who acquired their ADSs or H Shares pursuant to any employee share option or otherwise as compensation, or holders that have a functional currency other than the United States dollar, all of whom may be subject to tax rules that differ significantly from those summarized below. In addition, this discussion does not address any state, local, non-United States, non-income tax (such as the United States federal gift and estate tax), or alternative minimum tax considerations or the Medicare tax. This discussion only addresses holders that hold their H Shares or ADSs as "capital assets" (generally, property held for investment) under the United States Internal Revenue Code of 1986, as amended (the "Code"). U.S. Holders are urged to consult their tax advisors regarding the United States federal, state, local, and non-United States income and other tax considerations relating to the ownership and disposition of our H Shares or ADSs.

For purposes of this summary, a U.S. Holder is a beneficial owner of H Shares or ADSs that is, for United States federal income tax purposes:

· an individual who is a citizen or resident of the United States;

· a corporation (or other entity treated as a corporation for United States federal income tax purposes) created in or organized under the laws of the United States or any State thereof or the District of Columbia;

· an estate the income of which is includible in gross income for United States federal income tax purposes regardless of its source; or

· a trust (a) the administration of which is subject to the primary supervision of a United States court and which has one or more United States persons who have the authority to control all substantial decisions of the trust or (b) a trust that has otherwise elected to be treated as a United States person under the Code.

If a partnership (including any entity treated as a partnership for United States federal income tax purposes) is a beneficial owner of H Shares or ADSs, the tax treatment of a partner in such partnership will depend upon the status of the partner and the activities of the partnership. Partnerships and partners of a partnership holding our H Shares or ADSs are urged to consult their tax advisors regarding the United States federal income tax considerations relating to the ownership and disposition of our H Shares or ADSs.

For United States federal income tax purposes, it is generally expected that a U.S. Holder of ADSs will be treated as the beneficial owner of the underlying shares represented by the ADSs. The remainder of this discussion assumes that a holder of ADSs will be treated in this manner. Accordingly, deposits or withdrawals of H Shares for ADSs will generally not be subject to United States federal income tax.

Passive Foreign Investment Company Considerations

A non-United States corporation, such as our Company, will be a "passive foreign investment company" (a "PFIC"), for United States federal income tax purposes for any taxable year, if either (a) 75% or more of its gross income for such year consists of certain types of "passive" income or (b) 50% or more of its average quarterly assets as generally determined on the basis of fair market value during such year produce or are held for the production of passive income. For this purpose, cash and assets readily convertible into cash are categorized as passive assets and the Company's unbooked intangibles are taken into account for determining the value of its assets. We will be

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treated as owning a proportionate share of the assets and earning a proportionate share of the income of any other corporation in which we own, directly or indirectly, more than 25% (by value) of the stock.

We do not believe that we were classified as a PFIC for the taxable year ended December 31, 2017. The determination of whether we will be or become a PFIC will depend, in part, upon the composition of our income and our assets (which are subject to change from year to year) and the market price of our ADSs (of which we cannot control). Although we do not expect that our business plans will change in a manner that will affect our PFIC status, no assurance can be given in this regard. Because there are uncertainties in the application of the relevant rules and PFIC status is a fact-intensive determination made on an annual basis, no assurance may be given with respect to our PFIC status for any taxable year.

The discussion below under "Dividends" and "Sale or Other Disposition of H Shares or ADSs" assumes that we will not be classified as a PFIC for United States federal income tax purposes. See the discussion below under the heading "Passive Foreign Investment Company Rules" for a brief summary of the PFIC rules.

Dividends

The gross amount of any cash distributions (including the amount of any tax withheld) paid on our H Shares or ADSs out of our current or accumulated earnings and profits, as determined under United States federal income tax principles, will be subject to tax as dividend income on the day actually or constructively received by a U.S. Holder, in the case of H Shares, or by the depositary bank, in the case of ADSs. Because we do not intend to determine our earnings and profits on the basis of United States federal income tax principles, any distribution paid will generally be reported as a "dividend" for United States federal income tax purposes. A non-corporate recipient of dividend income will generally be subject to tax on dividend income from a "qualified foreign corporation" at a reduced capital gains rate rather than the marginal tax rates generally applicable to ordinary income provided that certain holding period requirements are met.

A non-U.S. corporation (other than a corporation that is classified as a PFIC for the taxable year in which the dividend is paid or the preceding taxable year) generally will be considered to be a qualified foreign corporation (i) if it is eligible for the benefits of a comprehensive tax treaty with the United States which the Secretary of Treasury of the United States determines is satisfactory for purposes of this provision and which includes an exchange of information program or (ii) with respect to any dividend it pays on stock which is readily tradable on an established securities market in the United States. There is currently a tax treaty in effect between the United States and the People's Republic of China (the "U.S.-PRC Treaty") which the Secretary of Treasury of the United States determined is satisfactory for these purposes and we believe that we are eligible for the benefits of such treaty. Additionally, our ADSs (but not our H Shares) trade on the New York Stock Exchange, an established securities market in the United States and the ADSs are expected to be readily tradable for so long as they continue to be listed on the New York Stock Exchange. Thus, while we presently believe that we are a qualified foreign corporation for purposes of the reduced treaty rate, there can be no assurance that the dividends we pay on our H Shares or ADSs will meet the conditions required for the reduced tax rate in the current taxable year or future taxable years. Dividends received on H Shares or ADSs will not be eligible for the dividends received deduction allowed to corporations. U.S. Holders are urged to consult their tax advisors regarding the rate of tax that will apply to them with respect to dividends (if any) received from U.S.

Dividends paid in non-United States currency will be includible in income in a United States dollar amount based on the exchange rate prevailing at the time of receipt of such dividends by the depositary, in the case of ADSs, or by the U.S. Holder, in the case of H Shares held directly by such U.S. Holder, regardless of whether the non-United States currency is actually converted into United States dollars at that time. Gain or loss, if any, recognized on a subsequent sale, conversion or other disposition of the non-United States currency will generally be United States source income or loss.

Dividends received on H Shares or ADSs will generally be treated, for United States foreign tax credit purposes, as foreign source income and generally will constitute passive category income. A U.S. Holder may be eligible, subject to a number of complex limitations, to claim a foreign tax credit in respect of any non-United States withholding taxes imposed on dividends received on H Shares or ADSs. U.S. Holders who do not elect to claim a foreign tax credit for foreign income tax withheld may instead claim a deduction, for United States federal income

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tax purposes, in respect of such withholdings, but only for a year in which the U.S. Holder elects to do so for all creditable foreign income taxes. U.S. Holders are urged to consult their tax advisors regarding the availability of the foreign tax credit under their particular circumstances.

Sale or Other Disposition of H Shares or ADSs

A U.S. Holder will generally recognize capital gain or loss upon the sale or other disposition of H Shares or ADSs in an amount equal to the difference between the amount realized upon the disposition and the U.S. Holder's adjusted tax basis in such H Shares or ADSs. Any capital gain or loss will be long-term if the H Shares or ADSs have been held for more than one year and will generally be United States source gain or loss for United States foreign tax credit purposes. If any PRC tax were to be imposed on any gain from the disposition of H Shares or ADSs, however, a U.S. Holder that is eligible for the benefits of the U.S.-PRC Treaty may elect to treat the gain as non-United States source gain or loss. The deductibility of a capital loss may be subject to limitations. The rules governing the foreign tax credit are complex and their outcome depends in large part on the U.S. Holder’s individual facts and circumstances. Accordingly, U.S. Holders should to consult their tax advisors regarding the availability of the foreign tax credit under their particular circumstances.

U.S. Holders that receive currency other than the United States dollar upon the sale or other disposition of H Shares will realize an amount equal to the United States dollar value of the non-United States currency on the date of such sale or other disposition, or if the shares are traded on an established securities market, in the case of cash basis and electing accrual basis taxpayers, the settlement date. U.S. Holders will recognize currency gain or loss if the United States dollar value of the currency received on the settlement date differs from the amount realized. U.S. Holders will have a tax basis in the currency received equal to the United States dollar amount at the spot rate on the settlement date. Generally, any gain or loss realized by U.S. Holders on a subsequent conversion or disposition of such currency will be United States source ordinary income or loss.

Passive Foreign Investment Company Rules

If we were to be classified as a PFIC in any taxable year, a special tax regime will apply to both (a) any "excess distribution" by us to a U.S. Holder (generally, the U.S. Holder's ratable portion of distributions in any year which are greater than 125% of the average annual distribution received by such U.S. Holder in the shorter of the three preceding years or the U.S. Holder's holding period for our H Shares or ADSs) and (b) any gain realized on the sale or other disposition of the H Shares or ADSs. Under this regime, any excess distribution and realized gain will be treated as ordinary income and will be subject to tax as if (a) the excess distribution or gain had been realized ratably over the U.S. Holder's holding period, (b) the amount deemed realized in each year had been subject to tax in each year of that holding period at the highest marginal rate for such year (other than income allocated to the current period or any taxable period before we became a PFIC, which would be subject to tax at the U.S. Holder's regular ordinary income rate for the current year and would not be subject to the interest charge discussed below), and (c) the interest charge generally applicable to underpayments of tax had been imposed on the taxes deemed to have been payable in those years. In addition, dividends made to a U.S. Holder will not qualify for the lower rates of taxation applicable to long-term capital gains discussed above under "Dividends".

The above results may be eliminated if a "mark-to-market" election is available and a U.S. Holder validly makes such an election. If the election is made, such holder generally will be required to take into account the difference, if any, between the fair market value and its adjusted tax basis in H Shares or ADSs at the end of each taxable year as ordinary income or ordinary loss (to the extent of any net mark-to-market gain previously included in income). In addition, any gain from a sale or other disposition of H Shares or ADSs will be treated as ordinary income, and any loss will be treated as ordinary loss (to the extent of any net mark-to-market gain previously included in income).

We do not intend to provide information necessary for U.S. Holders to make qualified electing fund elections, which, if available, would result in tax treatment different from (and generally less adverse than) the general tax treatment for PFICs described above.

As discussed above under "Dividends", dividends that we pay on the ADSs or our H Shares will not be eligible for the reduced tax rate that applies to qualified dividend income if we are a PFIC for the taxable year in

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which the dividend is paid or the preceding taxable year. In addition, if a U.S. Holder owns the ADSs or our H Shares during any taxable year that we are a PFIC, such holder would generally be required to file an annual IRS Form 8621. Each U.S. Holder is advised to consult its tax advisors regarding the potential tax consequences to such holder if we are or become a PFIC, including the possibility of making a mark-to-market election.

Information Reporting

U.S. Holders may be subject to information reporting to the United States Internal Revenue Service with respect to dividends on and proceeds from the sale or other disposition of our H Shares or ADSs. U.S. Holders are urged to consult their tax advisors regarding the application of the United States information reporting and backup rules to their particular circumstances.

Certain U.S. Holders who hold "specified foreign financial assets", including stock of a non-U.S. corporation that is not held in an account maintained by a U.S. "financial institution", whose aggregate value exceeds $50,000 during the tax year, may be required to attach to their tax returns for the year certain specified information. An individual who fails to timely furnish the required information may be subject to a penalty. U.S. Holders are urged to consult their tax advisors regarding their reporting obligations under this legislation.

F. Dividends and paying agents

Not applicable.

G. Statement by experts

Not applicable.

H. Documents on display

We are subject to the information reporting requirements of the Securities Exchange Act of 1934 (the "Exchange Act") and, in accordance with the Act, file certain reports and other information with the SEC. You may read and copy any report, statement or other information filed by us at the SEC's public reference rooms in Washington, D.C., New York and Chicago, Illinois. Please call the SEC at 1-800-0330 for further information on the public reference rooms. Our reports and other information filed with the SEC are also available to the public from commercial document retrieval services and the website maintained by the SEC at http://www.sec.gov.

I. Subsidiary information

Not applicable.

ITEM 11 Quantitative and Qualitative Disclosures About Market Risk

Our primary market risk exposures are fluctuations of fuel prices, foreign exchange rates and interest rates.

Equity price risk

The available-for-sale financial assets of the Company and its subsidiaries are exposed to equity security price risk.

Detailed information relating to the available-for-sale financial assets is disclosed in Note 10 to the financial statements.

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The Company and its subsidiaries are exposed to fuel price risk on fuel purchases. In particular, SinoSing Power and its subsidiaries use fuel oil swap to hedge against such a risk and designate them as cash flow hedges. Please refer to Note 14 to the financial statements for details.

Foreign exchange rate risk

The exchange rate of Renminbi to foreign currencies may fluctuate and is affected by, among other things, changes in China's political and economic conditions. The conversion of Renminbi into foreign currencies, including U.S. dollars, is based on rates set by the PBOC. On July 21, 2005, the PRC government introduced a floating exchange rate system to allow the value of Renminbi to fluctuate within a regulated band based on market supply and demand and by reference to a basket of foreign currencies. Renminbi appreciated by more than 20% against the U.S. dollar between July 2005 and July 2008. Between July 2008 and June 2010, this appreciation halted and the exchange rate between the Renminbi and the U.S. dollar remained within a narrow band. On June 19, 2010, the PBOC decided to further promote the reform of the Renminbi exchange rate formation mechanism, and improve the flexibility of the Renminbi exchange rate. Since June 2010, the Renminbi has regained steady appreciation against the U.S. dollar, which was reversed by a slight depreciation of Renminbi against the U.S. dollar at the turn to and early 2014. On March 15, 2014, the PBOC announced to further widen the Remninbi's daily trading band against the U.S. dollar from 1% to 2% on either side of the daily reference rate, allowing for greater fluctuations of the exchange rate. It is difficult to predict how market forces or PRC or U.S. government policy may impact the exchange rate between the Renminbi and the U.S. dollar in the future. There remains significant international pressure on the PRC Government to further liberalize its currency policy. We cannot assure you that any future movements in the exchange rate of the Renminbi against the U.S. dollar and other currencies will not adversely affect our results of operations and financial conditions.

SinoSing Power and its subsidiaries are exposed to foreign exchange risk on fuel purchases that is denominated primarily in U.S. dollars. They use forward exchange contracts to hedge almost all of their estimated foreign exchange exposure in respect of forecast fuel purchases over the following three months. The Company and its subsidiaries account for their forward foreign currency contracts as cash flow hedges.

The following table provides information, by maturity date, regarding our foreign currency sensitive financial instruments, which consist of bank balances and cash, short-term and long-term debt obligations, capital commitments and forward exchange contracts as of December 31, 2017 and average interest rates for the year ended December 31, 2017.

(RMB expressed in millions, except interest rate and exchange rate)

	As of December 31, 2017
	Expected Maturity Date												Total		Fair Value
	2018		2019		2020		2021		2022		Thereafter
On-balance sheet financial instruments
Bank balances and cash:
In U.S. Dollar		316		-		-		-		-		-		316		316
In Japanese Yen		0.193		-		-		-		-		-		0.193		0.193
Debts
Japanese Yen		6		6		6		6		6		118		148		95
Average interest rate		0.750		0.750		0.750		0.750		0.750		0.750		—		—
Euro		66		46		35		34		33		19		233		215
Average interest rate		2.079		2.048		2.014		2.010		2.008		2.026		—		—

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	As of December 31, 2017
	Expected Maturity Date												Total		Fair Value
	2018		2019		2020		2021		2022		Thereafter
U.S. Dollar		418		412		412		412		412		206		2,272		2,272
Average interest rate		1.748		1.740		1.740		1.740		1.740		1.740		—		—
Gas purchase commitments (U.S. Dollar)		5,943		5,943		5,934		5,918		6,065		12,343		42,146

	As of December 31, 2017
	Expected Maturity Date												Total		Fair Value
	2018		2019		2020		2021		2022		Thereafter
Forward exchange contracts
(Receive US $ / Pay S$)
Contract amount		2,083		391		84		9		-		-		2,567		(68	)
Average Contractual Exchange Rate		1.38		1.38		1.32		-		-		1.37		—		—

	As of December 31, 2016
	Expected Maturity Date												Total		Fair Value
	2017		2018		2019		2020		2021		Thereafter
On-balance sheet financial instruments
Bank balances and cash:
In U.S. Dollar		320		-		-		-		-		-		320		320
In Japanese Yen		0.184		-		-		-		-		-		0.184		0.184
Debts
Japanese Yen		7		7		7		7		7		128		163		105
Average interest rate		0.750		0.750		0.750		0.750		0.750		0.750		—		—
Euro		68		68		40		32		32		46		286		230
Average interest rate		2.085		2.085		2.040		2.013		2.010		2.007		—		—
U.S. Dollar		389		389		389		389		389		898		2,843		2,843
Average interest rate		1.920		1.920		1.920		1.920		1.920		1.920		—		—
Gas purchase commitments (U.S. Dollar)		5,703		5,703		5,703		5,718		5,703		17,776		46,305

	As of December 31, 2016
	Expected Maturity Date												Total		Fair Value
	2017		2018		2019		2020		2021		Thereafter
Forward exchange contracts
(Receive US $ / Pay S$)
Contract amount		1,884		498		155		1		-		-		2,538		107
Average Contractual Exchange Rate		1.39		1.39		1.39		1.37		-		-		—		—

The outstanding balance of the Company's loans denominated in foreign currencies has changed continually as a result of repayments of the loans by the Company according to agreed-upon repayment schedules. The loans denominated in U.S. dollars decreased from RMB2.843 billion as of December 31, 2016 to RMB2.272 billion as of December 31, 2017. The loans denominated in Euros decreased from RMB286 million as of December 31, 2016 to RMB233 million as of December 31, 2017.

Interest rate risk

We are exposed to interest rate risk primarily resulting from fluctuations in interest rates on our debts. Upward fluctuations in interest rates increase the cost of new variable rate debts and the interest cost of outstanding floating rate borrowings.

At present, the interest rate of the Company's loans denominated in RMB is subject to the change of the benchmark interest rate published and adjusted by the PBOC. Different interest rate levels correspond to loans with different terms. New loan contracts entered into hereafter will be subject to current benchmark interest rates. A portion of the Company's loans denominated in foreign currency are fixed rate loans, which are not subject to the changes in market interest rates. Due to the loans borrowed in relation to the acquisition of SinoSing Power, the portion of the loans denominated in foreign currency with floating interest rates increased, which subjects the finance cost of the Company to the fluctuation of market interest rates. In 2009, the Company entered into a floating-to-fixed interest rate swap agreement to hedge against the cash flow interest rate risk of part of the loan. According to the interest rate swap agreement, the Company agrees with the counterparty to settle the difference between fixed contract rates and floating rate interest amounts calculated by reference to the agreed notional amounts quarterly until 2019. The notional amount of the outstanding interest rate swap at December 31, 2017 was US$176 million.

In 2009, Tuas Power completed its refinancing, through which all of its outstanding loans denominated in U.S. dollars were refinanced through loans denominated in Singapore dollars, matching the functional currency of its operation. The loans borrowed by Tuas Power were denominated in Singapore dollars, and the majority of them

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are with floating interest rates, which subjects the finance cost of the Company to the fluctuation of market interest rates. In 2012 and 2013, TPG also entered into a number of floating-to-fixed interest rate swap agreements to hedge against the cash flow interest rate risk of the loan. According to these interest rate swap agreements, TPG agrees with the counterparty to settle the difference between fixed contract rates and floating rate interest amounts calculated by reference to the agreed notional amount semi-annually until 2020. The notional amount of the outstanding interest rate swap at December 31, 2017 was US$799.671 million.

The table below provides information about the Company and its subsidiaries' derivative financial instruments and other financial instruments that are sensitive to changes in interest rates, including interest rate swaps and debt obligations. For debt obligations, the table presents principal cash flows and related weighted average interest rates by expected maturity dates. For interest rate swaps, the table presents notional amounts and weighted average interest rates by expected (contractual) maturity dates. Notional amounts are used to calculate the contractual payments to be exchanged under the contract. Weighted average variable rates are based on implied forward rates in the yield curve at the reporting date.

(RMB expressed in millions, except interest rates)

	As of December 31, 2017
	Expected Maturity Date
	2018			2019			2020			2021		2022		Thereafter		Total					Fair Value
Debts
Shareholder's, bank and other loans		98,349			20,729			19,906			16,683		12,656		37,058		205,381		205,256
Average interest rate		3.960			3.850			3.743			3.643		3.525		3.525		—		—
Short-term bonds		11,068			-			-			-		-		-		11,068		11,068
Average interest rate		3.577			-			-			-		-		-		—		—
Long-term bonds		3,997			3,994			2,800			3,000		5,000		1,200		19,991		19,811
Average interest rate		4.629			4.381			4.204			4.553		4.553		3.982		—		—
	As of December 31, 2017
	Notional Amount Expected Maturity Date
		2018			2019			2020			2021		2022	Thereafter		Total		Fair Value
Debts
Interest Rate Derivatives (US$)
Variable to Fixed		209			941			-			-		-		-		1,150		(22	)
Average receive rate		2.92	%		3.38	%		-			-		-		-		—		—
Average pay rate		4.40	%		4.40	%		4.40	%		-		-		-		—		—
Interest Rate Derivatives (S$)
Variable to Fixed		1,003			-			4,215			-		-		-		5,218		(108	)
Average receive rate		1.08	%		-			1.35	%		-		-		-		—		—
Average pay rate		2.289	%		-			2.485	%		-		-		-		—		—

	As of December 31, 2016
	Expected Maturity Date
	2017		2018		2019		2020		2021		Thereafter		Total		Fair Value
Debts
Shareholder's, bank and other loans		67,230		12,136		12,034		8,698		7,851		24,271		132,220		132,144
Average interest rate		3.550		3.404		3.157		2.951		2.725		2.725		—		—
Short-term bonds		27,311		-		-		-		-		-		27,311		27,311
Average interest rate		3.453		-		-		-		-		-		—		—
Long-term bonds		3,295		3,989		3,994		-		3,000		1,200		15,478		15,714
Average interest rate		4.786		4.476		3.625		3.625		3.982		3.982		—		—

	As of December 31, 2016
	Notional Amount Expected Maturity Date
	2017			2018			2019			2020			2021		Thereafter		Total		Fair Value
Debts
Interest Rate Derivatives (US$)
Variable to Fixed		222			222			999			-			-		-		1,443		(70	)
Average receive rate		1.86	%		2.34	%		2.69	%		-			-		-		—		—
Average pay rate		4.40	%		4.40	%		4.40	%		-			-		-		—		—
Interest Rate Derivatives (S$)
Variable to Fixed		1,393			1,132			178			3,819			-		-		6,522		(99	)
Average receive rate		1.04	%		1.57	%		1.78	%		1.96	%		-		-		—		—
Average pay rate		2.468	%		2.508	%		2.531	%		2.531	%		-		-		—		—

As of December 31, 2017, the Company's loans denominated in foreign currency amounted to RMB266 million, most of which were denominated in U.S. dollars. In addition, SinoSing Power's loans denominated in Singapore dollars amounted to RMB12,396 million as of December 31, 2017. Given the current market situation, it

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is expected that the interest rate in the U.S. is very likely to rise. We have a relatively small portion of the loans denominated in U.S. dollars, thus it is not expected to cause any material adverse effect on the finance cost of the Company. In the Singapore capital market, the SOR interest rate is expected to rise amid interest rate hikes in the U.S., resulting in an increase the financing costs of Tuas Power. We will closely watch the changes in domestic and overseas capital markets, and maintain its good reputation on the capital markets, make reasonable financing arrangements, timely adjust our financing strategy, explore new financing methods, manage the exchange rate fluctuation risks, and strive to control financing costs.

Commodity price risk

We are exposed to fuel price risk on fuel purchases. SinoSing Power and its subsidiaries use fuel oil swap to hedge against such risk. The table below provides information about the fuel swap contracts that are sensitive to changes in fuel prices, including contract volumes, the weighted average contract prices, and the total contract amount by expected maturity dates.

(RMB expressed in millions, except interest rates and exchange rates)

	As of December 31, 2017
	Expected Maturity Date
	2018		2019		2020		2021		2022		Thereafter		Total		Fair Value
Fuel Swap contracts
Contract Volumes (MT)		423,136		340,395		141,740		20,160		-		-		925,431		—
Weighted Average Price (US$/MT)		324.95		309.04		301.04		317.48		-		-		—		—
Contract Amount (RMB million)		898		687		278		42		-		-		1,905		319
Contract Volumes (BBL)		98,000		-		-		-		-		-		98,000		—
Weighted Average Price (US$/BBL)		62.67		-		-		-		-		-		—		—
Contract Amount (RMB million)		40		-		-		-		-		-		40		3

	As of December 31, 2016
	Expected Maturity Date
	2017		2018		2019		2020		2021		Thereafter		Total		Fair Value
Fuel Swap contracts
Contract Volumes (MT)		715,675		241,015		74,050		-		-		-		1,030,740		—
Weighted Average Price (US$/MT)		312.03		298.48		305.44		-		-		-		—		—
Contract Amount (RMB million)		1,551		500		156		-		-		-		2,207		103
Contract Volumes (BBL)		78,960		-		-		-		-		-		78,960		—
Weighted Average Price (US$/BBL)		51.63		-		-		-		-		-		—		—
Contract Amount (RMB million)		28		-		-		-		-		-		28		2

For other detailed information of the market risk, please refer to the Note 3(a)(i) to the "Financial Statements".

ITEM 12 Description of Securities Other than Equity Securities

A. Debt Securities

Not applicable.

B. Warrants and Rights

Not applicable.

C. Other Securities

Not applicable.

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D. American Depositary Shares

Depositary Fees and Charges

Under the terms of the Deposit Agreement for Huaneng Power International, Inc.'s American Depositary Shares (ADSs), an ADS holder may have to pay the following services fees to the Depositary:

Services	Fees
Issuance of ADSs	$5.00 (or less) per 100 ADSs (or portion of 100 ADSs) issued
Cancellation of ADSs	$5.00 (or less) per 100 ADSs (or portion of 100 ADSs) canceled
Distribution of cash dividends or other cash distributions	$2.00 (or less) per 100 ADSs (or portion of 100 ADSs) held
Distribution of ADSs pursuant to stock dividends, free stock distributions or exercises of rights	$5.00 (or less) per 100 ADSs (or portion of 100 ADSs) held
Distribution of securities other than ADSs or rights to purchase additional ADSs	$5.00 (or less) per 100 ADSs (or portion of 100 ADSs) held

An ADS holder will also be responsible to pay certain fees and expenses incurred by the Depositary and certain taxes and governmental charges such as:

· taxes and other governmental charges;

· such registration fees as may from time to time be in effect for the registration of transfers of H Shares generally on the H Share register of the Company or Foreign Registrar and applicable to transfers of H Shares to the name of the Depositary or its nominee or the Custodian or its nominee on the making of deposits or withdrawals;

· such cable, telex and facsimile transmission expenses as are expressly provided in the Deposit Agreement;

· such expenses as are incurred by the Depositary in the conversion of foreign currency; and

· any other charge payable by the Depositary, any of the Depositary's agents, including the Custodian, or the agents of the Depositary's agents in connection with the servicing of H Shares or other Deposited Securities.

Depositary Payments for the Year 2017

In 2017, we received the payment of US$129,942  (inclusive of withholding tax) from the Bank of New York Mellon, the Depositary for our ADR program, for the reimbursement of our expenses related to investors' relation activities and training activities.

PART II

ITEM 13 Defaults, Dividend Arrearages and Delinquencies

None.

ITEM 14 Material Modifications to the Rights of Security Holders and Use of Proceeds

None.

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ITEM 15 Controls and Procedures

Disclosure Controls and Procedures

Our management, with the participation of our principal executive officer and principal financial officer, has evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the U.S. Securities Exchange Act of 1934, as amended (the "Exchange Act")) as of December 31, 2017 (the "Evaluation Date"), the end of the fiscal year covered by this annual report. Based on this evaluation, our principal executive officer and principal financial officer have concluded that, as of the Evaluation Date, our disclosure controls and procedures were effective.

Management's Report on Internal Control over Financial Reporting

According to Sarbanes-Oxley Act Section 404, our management is responsible for establishing and maintaining adequate internal control over financial reporting, as defined in the Exchange Act Rules 13a-15(f) and 15d-15(f). The Company conducted an evaluation of the effectiveness of the design and implementation of our internal control over financial reporting based upon the framework in Internal Control-Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) as of the end of the period covered by this annual report. The evaluation is conducted under the supervision and with the participation of our management including principal executive officer and principal financial officer of the Company. Based on that evaluation, our management has concluded that our internal control over financial reporting was effective as of December 31, 2017. The effectiveness of the Company's internal control over financial reporting as of December 31, 2017 has been audited by KPMG Huazhen LLP, an independent registered public accounting firm, as stated in their report which appears herein.

Because of its inherent limitations, internal control over financial reporting may only provide reasonable assurance for preventing or detecting misstatements. In addition, projections of any evaluation of effectiveness of our internal control over financial reporting to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies and procedures may deteriorate.

Report of Independent Registered Public Accounting Firm

To the Shareholders and Board of Directors
Huaneng Power International, Inc.:

Opinion on Internal Control Over Financial Reporting

We have audited Huaneng Power International, Inc. and subsidiaries’ (the “Company”)  internal control over financial reporting as of December 31, 2017, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2017, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (“PCAOB”), the consolidated statements of financial position of the Company as of December 31, 2017 and 2016, the related consolidated statements of comprehensive income, changes in equity, and cash flows for the years then ended, and the related notes (collectively, the “consolidated financial statements”), and our report dated March 13, 2018 expressed an unqualified opinion on those consolidated financial statements.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on

156

the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audit also included performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control Over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ KPMG Huazhen LLP

Beijing, China

March 13, 2018

Changes in Internal Control over Financial Reporting

During the year ended December 31, 2017, no changes occurred in our internal controls over financial reporting that materially affected, or is reasonably likely to materially affect, our internal controls over financial reporting.

ITEM 16 Reserved

ITEM 16A Audit Committee Financial Expert

The Board of Directors has determined that Mr. Yue Heng and Mr. Zhang Xianzhi qualify as Audit Committee Financial Experts in accordance with the terms of Item 16A of Form 20-F. See "Item 6 Directors, Senior Management and Employees – A. Directors, members of the supervisory committee and senior management".

ITEM 16B Code of Ethics

Although, as of the date of this annual report, we do not have, in form, a code of ethics that applies to the Company's principal executive officer, principal financial officer and principal accounting officer (collectively, the

157

"Senior Corporate Officers"), we believe that, as a substantive matter, the Senior Corporate Officers are subject to a set of written requirements under the PRC law that are substantially similar to the ethical standards described under Item 16B (b) of Form 20-F. Joint stock companies that are incorporated in China and listed on both PRC and foreign stock exchanges are heavily regulated by the central government. To a large extent, these requirements, which are designed to promote honest and ethical conduct and compliance with applicable laws and regulations by the directors and senior executives of such companies, are not merely ethical requirements, but more importantly, statutory obligations that are legally binding on these individuals under the PRC Company Law, relevant rules and regulations promulgated by China Securities Regulatory Commission and the Mandatory Provisions of Articles of Association of Overseas Listed Companies.

ITEM 16C Principal Accountant Fees and Services

KPMG Huazhen LLP has served as our independent registered public accounting firm for the fiscal years ended December 31, 2017 and 2016, for which audited consolidated financial statements appear in this annual report on Form 20-F.

The following table shows information about fees payable by us to KPMG Huazhen LLP in 2017 and 2016, respectively.

(RMB million)	For the Year Ended December 31,
	2017		2016
Audit fees		42.8		30.2
Audit-related fees		2.4		4.9
Tax fees		0.4		0.4
All other fees		2.4		2.8
Total		48.0		38.3

Tax Fees

Services provided primarily consist of tax compliance services.

Audit-related Fees

Audit-related services include those other assurances and related services provided by auditors, but not restricted to those that can only reasonably be provided by the external auditors signing the auditors’ report, that are reasonably related to the performance of the audit or review of the Company’s financial statements. The audit-related fees in 2016 were related to acquisition audits.

All Other Fees

Provision of other assurance and advisory service.

Audit Committee Pre-approval Policies and Procedures

The Audit Committee of the Company's Board of Directors is responsible, among other things, for the oversight of the external auditors subject to the requirements of the PRC Law and the Company's Articles of Association. The Audit Committee has adopted a policy regarding pre-approval of audit and permissible non-audit services to be provided by our independent auditors (the "Policy"). Under the Policy, proposed services either (i) may be pre-approved by the Audit Committee without consideration of specific case-by-case services ("general pre-approval"); or (ii) require the specific pre-approval of the Audit Committee ("specific pre-approval"). General pre-approval applies to services of recurring and predictable nature. These types of services, once approved by the Audit Committee in the beginning, will not require further approval in the future, except when actual fees and expenses exceed pre-approved budget levels. In such a case, the Audit Committee may authorize one of its members to approve budget increases subject to the requirement that such member provides a report on his decision to approve

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or deny an application for budget increases to the Audit Committee at an Audit Committee meeting held immediately after such member grants or denies the approval.

Specific pre-approval applies to all other services. These services must be approved by the Audit Committee on a case-by-case basis after an application including proposed budget and scope of services to be provided by our independent auditors is submitted to the Audit Committee.

For 2017, all of the services provided by KPMG were pre-approved by the Audit Committee.

ITEM 16D Exemptions from the Listing Standards for Audit Committees

Not applicable.

ITEM 16E Purchases of Equity Security by the Issuer and Affiliated Purchasers

Not applicable.

ITEM 16F Change in Registrant's Certifying Accountant

Not applicable

ITEM 16G Corporate Governance

Comparison of New York Stock Exchange corporate governance rules and China corporate governance rules for listed companies: under the amended Corporate Governance Rules of New York Stock Exchange  ("NYSE"), foreign issuers (including the Company) listed on the NYSE are required to disclose a summary of the significant differences between their domestic corporate governance rules and NYSE corporate governance rules that would apply to a U.S. domestic issuer.  A summary of such differences is listed below:

NYSE corporate governance rules	Corporate governance rules applicable to the domestically listed companies in China and the Company's governance practices
Director Independence
A listed company must have a majority of independent directors on its board of directors. No director qualifies as "independent" unless the board of directors affirmatively determines that the director has no material relationship with the listed company (either directly or as a partner, shareholder or officer of an organization that has a relationship with the company). In addition, a director must meet certain standards to be deemed independent. For example, a director is not independent if the director is, or has been within the last three years, an employee of the listed company, or an immediate family member is, or has been within the last three years, an executive officer of the listed company, or if the director has received, or has an immediate family member who has received, during any twelve-month period within the last three years, more than US$120,000 in direct compensation from the listed company, other than director and committee fees and pension or other forms of deferred compensation for prior service (provided such compensation is not contingent in any way on continued service).	It is required in China that any domestically listed company must establish an independent director system and set forth specific requirements for the qualification of independent directors. For example, an independent director shall not hold any other position in the listed Company other than being an independent  director and shall not be influenced by the main shareholders or the controlling persons of the listed company, or by any other entities or persons with whom the listed company has a significant relationship. The Company has complied with the relevant Chinese corporate governance rules and has implemented internal rules governing the independence and responsibilities of independent directors. The Company determines the independence of independent directors every year.

159

To empower non-management directors to serve as a more effective check on management, the non-management directors of each listed company must meet at regularly scheduled executive sessions without management.	No similar requirements.
Nominating/Corporate Governance Committee
Listed companies must have a nominating/corporate governance committee composed entirely of independent directors.	The board of directors of a domestically listed company may, through the resolution of the shareholders' meeting, establish a nominating committee composed entirely of directors, of which the independent directors shall be the majority and the convener. The Company has established a nominating committee.
The nominating/corporate governance committee must have a written charter that addresses the committee's purposes and responsibilities which, at minimum, must be to: search for eligible people for the board of directors, select and nominate directors for the next session of the shareholders' annual meeting, study and propose corporate governance guidelines, supervise the evaluation of the board of directors and management, and evaluate the performance of the committee every year.	Relevant responsibilities of the nominating/corporate governance committee are similar to those stipulated by the NYSE rules, but the main responsibilities do not include the research and recommendation of corporate governance guidelines, the supervision of the evaluation of the board of directors and management, or the annual evaluation of the committee.
Compensation Committee
Listed companies must have a compensation committee composed entirely of independent directors.	The board of directors of a listed company can, through the resolution of shareholders' meeting, have a compensation and evaluation committee composed entirely of directors, of whom the independent directors are the majority and act as the convener.
The compensation committee must have a written charter that addresses, at least, the following purposes and responsibilities:	The responsibilities are similar to those stipulated by the NYSE rules, but the committee is not required to produce a report on the executive compensation or make an annual performance evaluation of the committee. The board of directors of the Company has established a compensation and evaluation committee composed mainly of independent directors who act as the convener, and the committee has a written charter.
(1)    review and approve the corporate goals associated with CEO's compensation, evaluate the performance of the CEO in fulfilling these goals, and, either as a committee or together with the other independent directors (as directed by the board) based on such evaluation, determine and approve the CEO's compensation level;
(2)    make recommendations to the board with respect to non-CEO executive officer compensation, and incentive-compensation and equity-based plans that are subject to board approval;

160

(3)    produce a committee report on executive compensation as required by the SEC to be included in the annual proxy statement or annual report filed with the SEC.
The charter must also include the requirement for an annual performance evaluation of the compensation committee.
The compensation committee may, in its sole discretion, retain or consult a compensation consultant, independent legal counsel or other advisor. The compensation committee shall be directly responsible for the appointment, compensation and oversight of the work of such advisor. A listed company must provide for appropriate funding for payment of reasonable compensation to such advisor. The compensation committee may select such advisor to the compensation committee only after taking into consideration all factors relevant to that person's independence from management.
Audit Committee
Listed companies must have an audit committee that satisfies the requirements of Rule 10A-3 of Exchange Act. It must have a minimum of three members, and all audit committee members must satisfy the requirements for independence set forth in Section 303A.02 of NYSE Corporate Governance Rules as well as the requirements of Rule 10A-3(b)(1) of the Exchange Act.	The board of directors of a domestically listed company can, through the resolution of the shareholders' meeting, establish an audit committee composed entirely of directors, of which the independent directors are the majority and act as the convener, and, at minimum, one independent director is an accounting professional.
The audit committee must have a written charter that specifies the purpose of the audit committee is, at minimum, to assist the board oversight of the integrity of financial statements, the Company's compliance with legal and regulatory requirements, qualifications and independence of independent auditors and the performance of the listed company's internal audit function and independent auditors.	The board of directors of a domestically listed company needs to establish the audit committee and make a written rules of procedure. The domestically listed company shall disclose the audit committee’s performance of the duty along with the annual report, including the disclosure of all audit committee meetings.
The written charter must also require the audit committee to prepare an audit committee report as required by the SEC to be included in the listed company's annual proxy statement as well as an annual performance evaluation of the audit committee.
The written charter must also specify the duties and responsibilities of the audit committee, which, at a minimum, must include those set out in Rules 10A-3(b)(2), (3), (4) and (5) of the Exchange Act, as well as other duties and responsibilities, such as to obtain and review a report by the independent auditor at least annually, meet to review and discuss the listed company's annual audited financial statements and quarterly financial statements with management and independent auditor.

161

Each listed company must have an internal audit department.	China has a similar regulatory provision, and the Company has an internal audit department.
Shareholder approval of equity compensation plan
Shareholders must be given the opportunity to vote on all equity-compensation plans and material revisions thereto, except for, among others, plans that are made available to shareholders generally, such as typical dividend reinvestment plan, certain awards and plans in the context of mergers and acquisitions.	The relevant regulations of China require the board of directors to propose plans on the amount and types of director compensation for the shareholders' meeting to approve. The compensation plan of executive officers is subject to approval by the board and announced at the shareholders' meeting and disclosed to the public upon the approval of the board of directors.
Corporate governance guidelines
Listed companies must adopt and disclose corporate governance guidelines, involving director qualification standards, director responsibilities, director compensation, director continuing education, annual performance evaluation of the board of directors, etc.	CSRC has issued the Corporate Governance Rules, providing specific rules regarding the process of director election, the duty of directors, the composition and duty of the board of directors and the rules of performance review, with which the Company has complied.
Code of ethics for directors, officers and employees
Listed companies must adopt and disclose a code of business conduct and ethics for directors, officers and employees, and promptly disclose any waivers of the code for directors or executive officers. Each code of business conduct and ethics must require that any waiver of the code for executive officers or directors may be made only by the board or a board committee.	China does not have such requirement for a code of ethics. But, the directors and officers must perform their legal responsibilities in accordance with the Company Law of PRC, relative requirements of CSRC and Mandatory Provisions to the Charter of Companies Listed Overseas.
Each listed company's CEO must certify to the NYSE each year that he or she is not aware of any violation by the listed company of NYSE corporate governance listing standards and he or she must promptly notify the NYSE in writing of any non-compliance with any applicable provisions of Section 303A.	No similar requirements.

ITEM 16H Mine Safety Disclosure

Not applicable.

ITEM 17 Financial Statements

Not applicable.

ITEM 18 Financial Statements

See page F-1 through F-120 following Item 19.

ITEM 19 Exhibits

1.1 Articles of Association amended and adopted by the Shareholders' meeting in June 2016, incoporated by reference to Exhibit 1.1 of our annual report on Form 20-F for the year ended December 31, 2016, filed with the SEC on April 17, 2017.

162

3.1 Shareholders’ Agreement dated May 31, 1994, incorporated by reference to Exhibit 9.1 of our Registration Statement on Form F-1, filed with the SEC on August 24, 1994. Amendment to Shareholders’ Agreement dated May 12, 2006, dincorporated by reference to Exhibit 3.1 of our annual report on Form 20-F for the year ended December 31, 2006, filed with the SEC on April 16, 2007.

8 A list of subsidiaries.*

12.1 Certifications of Principal Executive Officer pursuant to Rule 13a-14(a) promulgated under the U.S. Securities Exchange Act of 1934.*

12.2 Certifications of Principal Financial Officer pursuant to Rule 13a-14(a) promulgated under the U.S. Securities Exchange Act of 1934.*

13.1 Certification pursuant to 18 U.S.C. § 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.*

101.INS* XBRL Instance Document.

101.SCH* XBRL Taxonomy Extension Schema Document.

101.CAL* XBRL Taxonomy Extension Calculation Linkbase Document.

101.DEF* XBRL Taxonomy Extension Definition Linkbase Document.

101.LAB* XBRL Taxonomy Extension Labels Linkbase Document.

101.PRE* XBRL Taxonomy Extension Presentation Linkbase Document.

* Filed herewith

** Furnished herewith

163

THIS PAGE IS INTENTIONALLY LEFT BLANK

Report of Independent Registered Public Accounting Firm

To the Shareholders and Board of Directors

Huaneng Power International, Inc.:

Opinion on the Consolidated Financial Statements

We have audited the accompanying consolidated statements of financial position of Huaneng Power International, Inc. and subsidiaries (the “Company”) as of December 31, 2017 and 2016, the related consolidated statements of comprehensive income, changes in equity, and cash flows for the years then ended, and the related notes (collectively, the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2017 and 2016, and the results of its operations and its cash flows for the years then ended, in conformity with International Financial Reporting Standards issued by the International Accounting Standards Board.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (“PCAOB”), the Company's internal control over financial reporting as of December 31, 2017, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission, and our report dated March 13, 2018 expressed an unqualified opinion on the effectiveness of the Company’s internal control over financial reporting.

Basis for Opinion

These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these consolidated financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statement. We believe that our audits provide a reasonable basis for our opinion.

/s/ KPMG Huazhen LLP

We have served as the Company’s auditor since 2012.

Beijing, China March 13, 2018

Report of Independent Registered Public Accounting Firm

The Board of Directors and Shareholders Huaneng Power International, Inc.:

We have audited the accompanying consolidated statements of comprehensive income, changes in equity, and cash flows of Huaneng Power International Inc. and subsidiaries for the year ended December 31, 2015. These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these consolidated financial statements based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audit provides a reasonable basis for our opinion.

In our opinion, the consolidated financial statements of Huaneng Power International, Inc. and subsidiaries, referred to above present fairly, in all material respects, the results of their operations and their cash flows for the year ended December 31, 2015, in conformity with International Financial Reporting Standards as issued by the International Accounting Standards Board.

/s/ KPMG

Hong Kong, China March 22, 2016, except for Note 5 as to which the date is March 13, 2018

Huaneng Power International, Inc.

Consolidated Statements of Comprehensive Income

For the years ended 31 December 2017, 2016 and 2015

(Prepared in accordance with International Financial Reporting Standards)

(Amounts expressed in thousands of RMB, except per share data)

		For the year ended 31 December
	Note	2017			2016			2015
		RMB			RMB			RMB
Operating revenue	5		152,459,444			113,814,236			128,904,873
Tax and levies on operations			(1,376,312	)		(1,177,818	)		(1,157,760	)
Operating expenses
Fuel	6		(92,737,304	)		(56,617,542	)		(59,242,367	)
Maintenance			(4,347,723	)		(4,343,349	)		(4,556,361	)
Depreciation			(20,180,830	)		(14,815,620	)		(14,411,632	)
Labor			(10,590,084	)		(8,043,406	)		(7,751,551	)
Service fees on transmission and transformer facilities of HIPDC			(95,894	)		(138,038	)		(140,771	)
Purchase of electricity			(3,787,032	)		(3,066,415	)		(3,581,517	)
Others	6		(10,160,875	)		(7,234,308	)		(8,919,988	)
Total operating expenses			(141,899,742	)		(94,258,678	)		(98,604,187	)
Profit from operations			9,183,390			18,377,740			29,142,926
Interest income			198,906			147,063			160,723
Financial expenses, net
Interest expense	6		(9,749,004	)		(6,817,526	)		(7,945,734	)
Exchange gain/(loss) and bank charges, net			144,359			(250,076	)		(24,336	)
Total financial expenses, net			(9,604,645	)		(7,067,602	)		(7,970,070	)
Share of profits less losses of associates and joint ventures	8		425,215			1,298,889			1,525,975
Gain/(loss) on fair value changes of financial assets/liabilities			856,786			(12,986	)		(16,742	)
Other investment income	6		1,742,081			1,070,034			115,238
Profit before income tax expense	6		2,801,733			13,813,138			22,958,050
Income tax expense	33		(1,217,526	)		(3,465,151	)		(5,698,943	)
Net profit			1,584,207			10,347,987			17,259,107

The accompanying notes are an integral part of these financial statements.

1

Huaneng Power International, Inc.

Consolidated Statements of Comprehensive Income (Continued)

For the years ended 31 December 2017, 2016and 2015

(Prepared in accordance with International Financial Reporting Standards)

(Amounts expressed in thousands of RMB, except per share data)

		For the year ended 31 December
	Note	2017			2016			2015
		RMB			RMB			RMB
Other comprehensive (loss)/income, net of tax
Items that may be reclassified subsequently to profit or loss:
Fair value changes of available-for-sale financial assets			281,663			(148,041	)		558,261
Gain on disposal of available-for-sale financial assets reclassified to profit or loss			(1,135,356	)		(741,648	)		-
Share of other comprehensive income/(loss) of investees accounted for under the equity method			121,208			(180,572	)		678,793
Effective portion of cash flow hedges			62,853			1,015,103			51,922
Translation differences of the financial statements of foreign operations			84,418			540,442			(133,116	)
Other comprehensive (loss)/income, net of tax			(585,214	)		485,284			1,155,860
Total comprehensive income			998,993			10,833,271			18,414,967
Net profit attributable to:
- Equity holders of the Company			1,579,836			8,520,427			13,651,933
- Non-controlling interests			4,371			1,827,560			3,607,174
			1,584,207			10,347,987			17,259,107
Total comprehensive income/(loss) attributable to:
- Equity holders of the Company			1,023,118			9,005,227			14,807,889
- Non-controlling interests			(24,125	)		1,828,044			3,607,078
			998,993			10,833,271			18,414,967
Earnings per share attributable to the equity holders of the Company (expressed in RMB per share)
- Basic and diluted	34		0.10			0.56			0.94

The accompanying notes are an integral part of these financial statements.

2

Huaneng Power International, Inc.

Consolidated Statements of Financial Position

As at 31 December 2017 and 2016

(Prepared in accordance with International Financial Reporting Standards)

(Amounts expressed in thousands of RMB)

		As at 31 December
	Note	2017		2016
		RMB		RMB
ASSETS
Non-current assets
Property, plant and equipment	7		284,328,093		223,061,809
Investments in associates and joint ventures	8		19,517,623		19,632,113
Investment property			217,406		-
Available-for-sale financial assets	10		1,604,993		3,406,032
Land use rights	11		11,264,785		8,456,347
Power generation licenses	12		3,916,246		3,849,199
Mining rights	13		1,646,271		1,646,271
Deferred income tax assets	31		2,300,091		1,263,957
Derivative financial assets	14		75,328		99,721
Goodwill	15		15,484,120		12,135,729
Other non-current assets	16		7,696,845		4,321,945
Total non-current assets			348,051,801		277,873,123
Current assets
Inventories	17		7,385,411		6,879,143
Other receivables and assets	18		6,081,517		5,533,770
Accounts receivable	19		25,447,595		16,393,471
Derivative financial assets	14		258,364		278,602
Bank balances and cash	35		9,364,823		7,881,630
Total current assets			48,537,710		36,966,616
Total assets			396,589,511		314,839,739

The accompanying notes are an integral part of these financial statements.

3

Huaneng Power International, Inc.

Consolidated Statements of Financial Position (Continued)

As at 31 December 2017 and 2016

(Prepared in accordance with International Financial Reporting Standards)

(Amounts expressed in thousands of RMB)

		As at 31 December
	Note	2017			2016
		RMB			RMB
EQUITY AND LIABILITIES
Capital and reserves attributable to equity holders of the Company
Share capital	20		15,200,383			15,200,383
Perpetual corporate bonds	21		5,068,550			-
Capital surplus			24,114,400			24,760,331
Surplus reserves	22		8,140,030			8,140,030
Currency translation differences			(675,054	)		(787,881	)
Retained earnings			35,793,257			38,690,132
			87,641,566			86,002,995
Non-controlling interests			19,973,038			16,183,742
Total equity			107,614,604			102,186,737
Non-current liabilities
Long-term loans	24		107,030,958			64,990,361
Long-term bonds	25		15,993,833			12,182,971
Deferred income tax liabilities	31		4,566,680			2,262,752
Derivative financial liabilities	14		148,486			201,169
Other non-current liabilities	26		5,284,462			2,819,498
Total non-current liabilities			133,024,419			82,456,751
Current liabilities
Accounts payable and other liabilities	27		38,900,132			28,746,617
Taxes payable	28		1,302,210			1,089,105
Dividends payable			1,735,426			1,575,180
Derivative financial liabilities	14		62,178			133,569
Short-term bonds	29		11,068,357			27,311,103
Short-term loans	30		80,251,348			57,668,874
Current portion of long-term loans	24		18,098,458			9,560,885
Current portion of long-term bonds	25		3,997,033			3,294,736
Current portion of other non-current liabilities	26		535,346			816,182
Total current liabilities			155,950,488			130,196,251
Total liabilities			288,974,907			212,653,002
Total equity and liabilities			396,589,511			314,839,739

These financial statements were approved for issue by the Board of Directors on 13 March 2018 and were signed on its behalf.

The accompanying notes are an integral part of these financial statements.

4

Huaneng Power International, Inc.

Consolidated Statements of Changes in Equity

For the years ended 31 December 2017, 2016 and 2015

(Prepared in accordance with International Financial Reporting Standards)

(Amounts expressed in thousands of RMB)

	Attributable to equity holders of the Company
			Capital surplus
	Sharecapital		Sharepremium		Hedgingreserve			Available-for-salefinancialassetsrevaluationreserve			Othercapitalreserve		Subtotal			Surplusreserves		Currency translation differences			Retained earnings			Total			Non-controlling interests			Total equity
Balance as at 1 January 2015		14,420,383		18,322,575		(1,091,109	)		1,279,119			1,111,614		19,622,199			7,196,349		(1,194,819	)		30,085,379			70,129,491			14,653,215			84,782,706
Profit for the year ended 31 December 2015		-		-		-			-			-		-			-		-			13,651,933			13,651,933			3,607,174			17,259,107
Other comprehensive income/ (loss):
Fair value changes of available-for-sale financial asset - gross		-		-		-			744,348			-		744,348			-		-			-			744,348			-			744,348
Fair value changes of available-for-sale financial asset - tax		-		-		-			(186,087	)		-		(186,087	)		-		-			-			(186,087	)		-			(186,087	)
Shares of other comprehensive income of investees accounted for under the equity method - gross		-		-		-			904,007			-		904,007			-		-			-			904,007			-			904,007
Shares of other comprehensive income of investees accounted for under the equity method - tax		-		-		-			(225,214	)		-		(225,214	)		-		-			-			(225,214	)		-			(225,214	)
Changes in fair value of effective portion of cash flow hedges - gross		-		-		(962,683	)		-			-		(962,683	)		-		-			-			(962,683	)		-			(962,683	)
Changes in fair value of effective portion of cash flow hedges - tax		-		-		166,135			-			-		166,135			-		-			-			166,135			-			166,135
Cash flow hedges recorded in shareholders' equity reclassified to inventories - gross		-		-		1,003,778			-			-		1,003,778			-		-			-			1,003,778			-			1,003,778
Cash flow hedges recorded in shareholders' equity reclassified to inventories - tax		-		-		(170,642	)		-			-		(170,642	)		-		-			-			(170,642	)		-			(170,642	)
Cash flow hedges recorded in shareholders' equity reclassified to exchange gain and bank charges, net - gross		-		-		(137,859	)		-			-		(137,859	)		-		-			-			(137,859	)		-			(137,859	)
Cash flow hedges recorded in shareholders' equity reclassified to exchange gain and bank charges, net - tax		-		-		23,436			-			-		23,436			-		-			-			23,436			-			23,436
Cash flow hedges recorded in shareholders' equity reclassified to interest expense - gross		-		-		161,124			-			-		161,124			-		-			-			161,124			-			161,124
Cash flow hedges recorded in shareholders' equity reclassified to interest expense - tax		-		-		(31,367	)		-			-		(31,367	)		-		-			-			(31,367	)		-			(31,367	)
Currency translation differences		-		-		-			-			-		-			-		(133,020	)		-			(133,020	)		(96	)		(133,116	)
Total comprehensive income /(loss) for the year ended 31 December 2015		-		-		51,922			1,237,054			-		1,288,976			-		(133,020	)		13,651,933			14,807,889			3,607,078			18,414,967
Dividends relating to 2014		-		-		-			-			-		-			-		-			(5,479,746	)		(5,479,746	)		(3,285,330	)		(8,765,076	)
Issuance of new H shares, net of issuance expenses		780,000		3,904,314		-			-			-		3,904,314			-		-			-			4,684,314			-			4,684,314
Capital injection from non-controlling interests of subsidiaries		-		-		-			-			-		-			-		-			-			-			623,107			623,107
Transfer to surplus reserve		-		-		-			-			-		-			943,681		-			(943,681	)		-			-			-
Business combination		-		-		-			-			-		-			-		-			-			-			1,934,865			1,934,865
Others		-		-		-			-			-		-			-		-			-			-			18,806			18,806
Balance as at 31 December 2015		15,200,383		22,226,889		(1,039,187	)		2,516,173			1,111,614		24,815,489			8,140,030		(1,327,839	)		37,313,885			84,141,948			17,551,741			101,693,689

The accompanying notes are an integral part of these financial statements.

5

Huaneng Power International, Inc.

Consolidated Statements of Changes in Equity (Continued)

For the years ended 31 December 2017, 2016 and 2015

(Prepared in accordance with International Financial Reporting Standards)

(Amounts expressed in thousands of RMB)

	Attributable to equity holders of the Company
			Capital surplus
	Sharecapital		Sharepremium		Hedgingreserve			Available-for-salefinancialassetsrevaluationreserve			Othercapitalreserve		Subtotal			Surplusreserve		Currencytranslationdifferences			Retained earnings			Total			Non-controlling interests			Total equity
Balance as at 1 January 2016		15,200,383		22,226,889		(1,039,187	)		2,516,173			1,111,614		24,815,489			8,140,030		(1,327,839	)		37,313,885			84,141,948			17,551,741			101,693,689
Profit for the year ended 31 December 2016		-		-		-			-			-		-			-		-			8,520,427			8,520,427			1,827,560			10,347,987
Other comprehensive income/(loss):
Fair value changes of available-for-sale financial assets - gross		-		-		-			(197,529	)		-		(197,529	)		-		-			-			(197,529	)		-			(197,529	)
Gain on disposal of available-for-sale financial assets reclassified to profit or loss - gross		-		-		-			(988,865	)		-		(988,865	)		-		-			-			(988,865	)		-			(988,865	)
Fair value changes of and gain on disposal of available-for-sale financial assets - tax		-		-		-			296,705			-		296,705			-		-			-			296,705			-			296,705
Shares of other comprehensive income of investees- accounted for under the equity method - gross		-		-		-			(242,217	)		-		(242,217	)		-		-			-			(242,217	)		-			(242,217	)
Shares of other comprehensive income of investees-accounted for under the equity method - tax		-		-		-			61,645			-		61,645			-		-			-			61,645			-			61,645
Changes in fair value of effective portion of cash flow hedges - gross		-		-		574,455			-			-		574,455			-		-			-			574,455			-			574,455
Changes in fair value of effective portion of cash flow hedges - tax		-		-		(95,407	)		-			-		(95,407	)		-		-			-			(95,407	)		-			(95,407	)
Cash flow hedges recorded in shareholders' equity reclassified to inventories - gross		-		-		603,527			-			-		603,527			-		-			-			603,527			-			603,527
Cash flow hedges recorded in shareholders' equity reclassified to inventories - tax		-		-		(102,600	)		-			-		(102,600	)		-		-			-			(102,600	)		-			(102,600	)
Cash flow hedges recorded in shareholders' equity reclassified to exchange gain and bank charges, net - gross		-		-		(55,838	)		-			-		(55,838	)		-		-			-			(55,838	)		-			(55,838	)
Cash flow hedges recorded in shareholders' equity reclassified to exchange gain and bank charges, net - tax		-		-		9,492			-			-		9,492			-		-			-			9,492			-			9,492
Cash flow hedges recorded in shareholders' equity reclassified to interest expense - gross		-		-		101,889			-			-		101,889			-		-			-			101,889			-			101,889
Cash flow hedges recorded in shareholders' equity reclassified to interest expense - tax		-		-		(20,415	)		-			-		(20,415	)		-		-			-			(20,415	)		-			(20,415	)
Currency translation differences		-		-		-			-			-		-			-		539,958			-			539,958			484			540,442
Total comprehensive income/(loss) for the year ended31 December 2016		-		-		1,015,103			(1,070,261	)		-		(55,158	)		-		539,958			8,520,427			9,005,227			1,828,044			10,833,271
Dividends relating to 2015		-		-		-			-			-		-			-		-			(7,144,180	)		(7,144,180	)		(3,481,663	)		(10,625,843	)
Net capital injection from non-controlling interests of subsidiaries		-		-		-			-			-		-			-		-			-			-			285,620			285,620
Balance as at 31 December 2016		15,200,383		22,226,889		(24,084	)		1,445,912			1,111,614		24,760,331			8,140,030		(787,881	)		38,690,132			86,002,995			16,183,742			102,186,737

The accompanying notes are an integral part of these financial statements.

6

Huaneng Power International, Inc.

Consolidated Statements of Changes in Equity (Continued)

For the years ended 31 December 2017, 2016 and 2015

(Prepared in accordance with International Financial Reporting Standards)

(Amounts expressed in thousands of RMB)

	Attributable to equity holders of the Company
					Capital surplus
	Share capital		Perpetual corporate bonds		Sharepremium			Hedgingreserve			Available-for-salefinancial assetsrevaluation reserve			Other capitalreserve		Subtotal			Surplusreserve		Currencytranslationdifferences			Retainedearnings			Total			Non-controllinginterests			Total equity
Balance as at 1 January 2017		15,200,383		-		22,226,889			(24,084	)		1,445,912			1,111,614		24,760,331			8,140,030		(787,881	)		38,690,132			86,002,995			16,183,742			102,186,737
Profit for the year ended 31 December 2017		-		68,600		-			-			-			-		-			-		-			1,511,236			1,579,836			4,371			1,584,207
Other comprehensive income/(loss):
Fair value changes of available-for-sale financial assets - gross		-		-		-			-			375,742			-		375,742			-		-			-			375,742			(50	)		375,692
Gain on disposal of available-for-sale financial assets reclassified to profit or loss-gross		-		-		-			-			(1,581,994	)		-		(1,581,994	)		-		-			-			(1,581,994	)		-			(1,581,994	)
Fair value changes of and gain on disposal of available-for-sale financial assets - tax		-		-		-			-			352,646			-		352,646			-		-			-			352,646			(37	)		352,609
Shares of other comprehensive income of investees – accounted for under the equity method - gross		-		-		-			-			162,858			-		162,858			-		-			-			162,858			-			162,858
Shares of other comprehensive income of investees – accounted for under the equity method - tax		-		-		-			-			(41,650	)		-		(41,650	)		-		-			-			(41,650	)		-			(41,650	)
Changes in fair value of effective portion of cash flow hedges - gross		-		-		-			85,558			-			-		85,558			-		-			-			85,558			-			85,558
Changes in fair value of effective portion of cash flow hedges - tax		-		-		-			(16,239	)		-			-		(16,239	)		-		-			-			(16,239	)		-			(16,239	)
Cash flow hedges recorded in shareholders' equity reclassified to inventories - gross		-		-		-			(109,817	)		-			-		(109,817	)		-		-			-			(109,817	)		-			(109,817	)
Cash flow hedges recorded in shareholders' equity reclassified to inventories - tax		-		-		-			18,669			-			-		18,669			-		-			-			18,669			-			18,669
Cash flow hedges recorded in shareholders' equity reclassified to exchange gain and bank charges, net - gross		-		-		-			(2,657	)		-			-		(2,657	)		-		-			-			(2,657	)		-			(2,657	)
Cash flow hedges recorded in shareholders' equity reclassified to exchange gain and bank charges, net - tax		-		-		-			452			-			-		452			-		-			-			452			-			452
Cash flow hedges recorded in shareholders' equity reclassified to interest expense - gross		-		-		-			107,233			-			-		107,233			-		-			-			107,233			-			107,233
Cash flow hedges recorded in shareholders' equity reclassified to interest expense - tax		-		-		-			(20,346	)		-			-		(20,346	)		-		-			-			(20,346	)		-			(20,346	)
Currency translation differences		-		-		-			-			-			-		-			-		112,827			-			112,827			(28,409	)		84,418
Total comprehensive income/(loss) for the year ended 31 December 2017		-		68,600		-			62,853			(732,398	)		-		(669,545	)		-		112,827			1,511,236			1,023,118			(24,125	)		998,993
Business combination (Note 40)		-		-		-			-			-			-		-			-		-			-			-			6,292,577			6,292,577
Issue of perpetual corporate bonds (Note 21)		-		4,999,950		-			-			-			-		-			-		-			-			4,999,950			-			4,999,950
Dividends relating to 2016 (Note 23)		-		-		-			-			-			-		-			-		-			(4,408,111	)		(4,408,111	)		(2,344,391	)		(6,752,502	)
Net capital injection from non-controlling interests of subsidiaries		-		-		-			-			-			-		-			-		-			-			-			846,847			846,847
Disposal of non-controlling interests of a subsidiary		-		-		28,054			-			-			-		28,054			-		-			-			28,054			(28,054	)		-
Acquisition of non-controlling interests of a subsidiary		-		-		(4,440	)		-			-			-		(4,440	)		-		-			-			(4,440	)		(86,699	)		(91,139	)
Disposal of subsidiaries (Note 6)		-		-		-			-			-			-		-			-		-			-			-			(866,859	)		(866,859	)
Balance as at 31 December 2017		15,200,383		5,068,550		22,250,503			38,769			713,514			1,111,614		24,114,400			8,140,030		(675,054	)		35,793,257			87,641,566			19,973,038			107,614,604

The accompanying notes are an integral part of these financial statements.

7

Huaneng Power International, Inc.

Consolidated Statements of Cash Flows

For the years ended 31 December 2017, 2016 and 2015

(Prepared in accordance with International Financial Reporting Standards)

(Amounts expressed in thousands of RMB)

	For the year ended 31 December
	2017			2016			2015
	RMB			RMB			RMB
CASH FLOWS FROM OPERATING ACTIVITIES
Profit before income tax expense		2,801,733			13,813,138			22,958,050
Adjustments to reconcile profit before income tax expense to net cash provided by operating activities:
Depreciation		20,180,830			14,815,620			14,411,632
Provision for impairment loss on property, plant and equipment		1,046,195			1,063,735			1,047,641
Provision for impairment loss on investment in an associate		-			-			178,131
Provision for impairment loss on goodwill		-			-			1,105,649
Provision for impairment loss on mining rights		-			-			760,296
Provision for impairment loss on land use rights		108,590			51,981			-
Provision for other non-current assets		5,008			-			-
Amortization of land use rights		341,125			225,707			213,206
Amortization of other non-current assets		113,878			121,388			92,775
Amortization of employee housing subsidies		653			866			940
Recognition/(reversal) of provision for doubtful accounts		27,682			89,498			(3,392	)
(Reversal)/recognition of provision for inventory obsolescence		(263	)		(256	)		1,828
(Gain)/Loss on fair value changes of financial assets/liabilities		(856,786	)		12,986			16,742
Other investment income		(1,742,081	)		(1,070,034	)		(115,238	)
Net loss on disposals of non-current assets		616,456			590,049			438,321
Unrealized exchange (gain)/loss, net		(157,056	)		195,055			166,148
Share of profits less losses of associates and joint ventures		(425,215	)		(1,298,889	)		(1,525,975	)
Interest income		(198,906	)		(147,063	)		(160,723	)
Interest expense		9,749,004			6,817,526			7,945,734
Others		171,611			(213,089	)		(89,332	)
Changes in working capital, net of effects of acquisitions:
Inventories		714,045			(1,270,582	)		2,106,821
Other receivables and assets		(199,023	)		(20,810	)		72,925
Accounts receivable		(6,201,149	)		(838,272	)		(175,429	)
Restricted cash		9,670			(11,566	)		499,899
Accounts payable and other liabilities		2,414,376			1,912,034			(2,856,958	)
Taxes payable		2,543,863			1,279,505			1,366,209
Interest received		136,134			84,806			102,813
Income tax expense paid		(2,003,011	)		(4,692,509	)		(6,196,005	)
Net cash provided by operating activities		29,197,363			31,510,824			42,362,708

The accompanying notes are an integral part of these financial statements.

8

Huaneng Power International, Inc.

Consolidated Statements of Cash Flows (Continued)

For the years ended 31 December 2017, 2016 and 2015

(Prepared in accordance with International Financial Reporting Standards)

(Amounts expressed in thousands of RMB)

		For the year ended 31 December
	Note	2017			2016			2015
		RMB			RMB			RMB
CASH FLOWS FROM INVESTING ACTIVITIES
Payment for the purchase of property, plant and equipment			(25,798,009	)		(20,144,903	)		(24,191,285	)
Proceeds from disposal of property, plant and equipment, land use rights and other non-current assets			286,609			144,346			109,013
Prepayments of land use rights			(213,928	)		(89,430	)		(136,045	)
Payment for the purchase of other non-current assets			(33,498	)		(50,653	)		(6,981	)
Cash dividends received			1,419,380			1,057,642			937,189
Payment for investment in associates and joint ventures			(301,916	)		(276,118	)		(889,780	)
Cash paid for acquiring available-for-sale financial assets			(5,600	)		-			-
Cash consideration paid for acquisition of subsidiaries, net of cash acquired	40		(10,817,107	)		157,421			(8,887,882	)
Cash received from disposal of a subsidiary, net of cash of the subsidiaries			530,437			-			-
Cash received from disposal of available-for-sale financial assets			2,186,758			1,474,301			-
Others			998,049			77,748			50,759
Net cash used in investing activities			(31,748,825	)		(17,649,646	)		(33,015,012	)

The accompanying notes are an integral part of these financial statements.

9

Huaneng Power International, Inc.

Consolidated Statements of Cash Flows (Continued)

For the years ended 31 December 2017, 2016 and 2015

(Prepared in accordance with International Financial Reporting Standards)

(Amounts expressed in thousands of RMB)

		For the year ended 31 December
	Note	2017			2016			2015
		RMB			RMB			RMB
CASH FLOWS FROM FINANCING ACTIVITIES
Issuance of short-term bonds			30,988,679			32,982,340			18,980,000
Repayments of short-term bonds			(47,000,000	)		(25,000,000	)		(18,000,000	)
Proceeds from short-term loans			107,564,128			85,689,874			67,298,044
Repayments of short-term loans			(96,378,054	)		(77,904,489	)		(62,600,955	)
Proceeds from long-term loans			32,706,327			15,978,023			9,943,689
Repayments of long-term loans			(17,390,982	)		(20,702,421	)		(12,799,719	)
Issuance of long-term bonds			7,800,000			4,200,000			-
Repayments of long-term bonds			(3,300,000	)		(11,500,000	)		(5,000,000	)
Interest paid			(10,080,102	)		(7,344,781	)		(8,677,316	)
Net proceeds from the issuance of new H shares			-			-			4,684,314
Net proceeds from the issuance of perpetual corporate bonds			4,999,950			-			-
Net capital injection from non-controlling interests of subsidiaries			838,084			285,620			623,107
Dividends paid to shareholders of the Company			(4,352,973	)		(7,206,220	)		(5,535,655	)
Dividends paid to non-controlling interests of subsidiaries			(2,184,145	)		(2,695,378	)		(2,954,194	)
Proceeds from sales leaseback classified as finance lease			-			-			100,000
Government grants			590,629			233,276			322,011
Payment for finance leasing			(695,019	)		(571,485	)		-
Others			(93,342	)		(46,209	)		(523,985	)
Net cash generated from/(used in) financing activities			4,013,180			(13,601,850	)		(14,140,659	)
Effect of exchange rate fluctuations on cash held			10,171			72,923			32,846
NET INCREASE/(DECREASE) IN CASH AND CASH EQUIVALENTS			1,471,889			332,251			(4,760,117	)
Cash and cash equivalents as at beginning of the year			7,810,501			7,478,250			12,238,367
CASH AND CASH EQUIVALENTS AS AT END OF THE YEAR	35		9,282,390			7,810,501			7,478,250

The accompanying notes are an integral part of these financial statements.

10

HUANENG POWER INTERNATIONAL, INC.

NOTES TO THE FINANCIAL STATEMENTS

(Prepared in accordance with International Financial Reporting Standards)

(Amounts expressed in thousands of RMB unless otherwise stated)

1 Company organization and principal activities

Huaneng Power International, Inc. (the "Company") was incorporated in the People's Republic of China (the "PRC") as a Sino-foreign joint stock limited company on 30 June 1994. The registered address of the Company is Huaneng Building, 6 Fuxingmennei Street, Xicheng District, Beijing, the PRC. The Company and its subsidiaries are principally engaged in the generation and sale of electric power to the respective regional or provincial grid companies in the PRC and in the Republic of Singapore ("Singapore"). The Company conducts its business in Singapore through SinoSing Power Pte Ltd. ("SinoSing Power") and its subsidiaries.

The directors consider Huaneng International Power Development Corporation ("HIPDC") and China Huaneng Group Co., Ltd. ("Huaneng Group") as the parent company and ultimate parent company of the Company, respectively. Both HIPDC and Huaneng Group are incorporated in the PRC. HIPDC does not produce financial statements available for public use.

2 Principal accounting policies

The principal accounting policies adopted in the preparation of these financial statements are set out below. These policies have been consistently applied to all the years presented, unless otherwise stated.

(a) Basis of preparation

These financial statements have been prepared in accordance with International Financial Reporting Standards ("IFRS") as issued by the International Accounting Standards Board (the "IASB"). These financial statements have been prepared under the historical cost convention, as modified by the revaluation of available-for-sale financial assets, financial assets at fair value through profit or loss and derivative financial assets and liabilities.

The preparation of financial statements in conformity with IFRS requires the use of certain critical accounting estimates. It also requires management to exercise its judgment in the process of applying the Company and its subsidiaries' accounting policies. The areas involving a higher degree of judgment or complexity, or areas where assumptions and estimates are significant to the financial statements are disclosed in Note 4.

As at 31 December 2017, the Company and its subsidiaries have net current liabilities of approximately RMB107.4 billion, and a portion of the Company and its subsidiaries' funding requirements for capital expenditures were satisfied by short-term financing. Taking into consideration of the expected operating cash flows of the Company and its subsidiaries and the undrawn available banking facilities of approximately RMB241.9 billion as at 31 December 2017, the Company and its subsidiaries are expected to refinance certain of its short-term loans and bonds and also to consider alternative sources of financing, where applicable and when needed.

Therefore, the directors of the Company are of the opinion that the Company and its subsidiaries will be able to meet its liabilities as and when they fall due within the next twelve months and accordingly, these consolidated financial statements are prepared on a going concern basis.

11

The IASB has issued several amendments to IFRSs that are first effective for the current accounting period of the Company and its subsidiaries. None of these developments have had a material effect on how the Company and its subsidiaries' results and financial position for the current or prior periods have been prepared or presented. However, additional disclosure has been included in Note 35 to satisfy the new disclosure requirements introduced by the amendments to IAS 7, Statement of cash flows: Disclosure initiative, which require entities to provide disclosures that enable users of financial statements to evaluate changes in liabilities arising from financing activities, including both changes arising from cash flows and non-cash changes. The Company and its subsidiaries have not applied any new standard or interpretation that is not yet effective for current accounting period.

(b) Consolidation

The consolidated financial statements include the financial statements of the Company and all of its subsidiaries.

Subsidiaries are investees over which the Company and its subsidiaries have the power to exercise control. The Company and its subsidiaries control an entity when it is exposed, or have rights to variable returns from their involvement with the entity and have the ability to affect those returns through their power over the entity. In assessing whether the Company and its subsidiaries have power, only substantive rights (held by the Company and its subsidiaries and other parties) are considered.

Subsidiaries are consolidated from the date when control is transferred to the Company and its subsidiaries. They are de-consolidated from the date when control ceases. Intra-group balances, transactions and cash flows, and any unrealised income and expenses arising from intra-group transactions, are eliminated in full in preparing the consolidated financial statements. Unrealised gains arising from transactions with equity accounted investees are eliminated against the investment to the extent of the Company and its subsidiaries' interest in the investee. Unrealised losses are eliminated in the same way as unrealised gains, but only to the extent that there is no evidence of impairment. The portion of the shareholders' equity of the subsidiaries, which is not attributable directly or indirectly to the parent company, is separately presented as non-controlling interests in the shareholders' equity in the consolidated financial statements.

When there is any inconsistency on the accounting policies or financial period adopted between subsidiaries and the Company, the financial statements of subsidiaries are adjusted according to the accounting policies or financial period adopted by the Company.

12

(i) Business combinations

The acquisition method is used to account for the business combinations of the Company and its subsidiaries (including business combinations under common controls). The consideration transferred for the acquisition of a subsidiary is the fair values of the assets transferred, the liabilities incurred to the former owners of the acquiree and the equity interests issued by the Company and its subsidiaries. Any contingent consideration is measured at fair value at the date of acquisition. If an obligation to pay contingent consideration that meets the definition of a financial instrument is classified as equity, then it is not remeasured and settlement is accounted for within equity. Otherwise, other contingent consideration is remeasured at fair value at each reporting date and subsequent changes in the fair value of the contingent consideration are recognised in profit or loss. Acquisition-related costs are expensed as incurred. Identifiable assets acquired and liabilities and contingent liabilities assumed in a business combination are measured initially at their fair values at the acquisition date. On an acquisition-by-acquisition basis, the Company and its subsidiaries recognize any non-controlling interests in the acquiree either at fair value or at the non-controlling interest's proportionate share of the recognized amounts of acquiree's identifiable net assets. The excess of the consideration transferred, the amount of any non-controlling interest in the acquiree and the acquisition-date fair value of any previous equity interest in the acquiree over the fair value of the identifiable net assets acquired is recorded as goodwill (Note 2(i)). If this consideration is lower than the fair value of the net assets of the subsidiary acquired, the difference is recognized in profit or loss.

(ii) Changes in ownership interests in subsidiaries

Transactions with non-controlling interests that do not result in loss of control are accounted for as equity transactions – that is, as transactions with the equity owners in their capacity as owners. The difference between fair value of any consideration paid and the relevant share acquired of the carrying value of net assets of the subsidiary is recorded in equity. Gains or losses on disposals to non-controlling interests are also recorded in equity.

When the Company and its subsidiaries lose control of a subsidiary, it is accounted for as a disposal of the entire interest in that subsidiary, with a resulting gain or loss being recognized in profit or loss. Any interest retained in that former subsidiary at the date when control is lost is recognized at fair value and this amount is regarded as the fair value on initial recognition of a financial asset (Note 2(k)) or, when appropriate, the cost on initial recognition of an investment in an associate or joint venture (Note 2(b)(iii)).

(iii) Associates and joint ventures

Associates are investees over which the Company and its subsidiaries have significant influence on the financial and operating decisions. A joint venture is an arrangement whereby the Company and its subsidiaries and other parties contractually agree to share control of the arrangement, and have rights to the net assets of the arrangement.

13

Investments in associates and joint ventures are initially recognized at cost and are subsequently measured using the equity method of accounting, unless it is classified as held for sale (or included in a disposal group that is classified as held for sale). The excess of the initial investment cost over the proportionate share of the fair value of identifiable net assets of investee acquired is included in the initial investment cost (Note 2(i)). Any shortfall of the initial investment cost to the proportionate share of the fair value of identifiable net assets of investee acquired is recognized in current period profit or loss and long-term investment cost is adjusted accordingly.

When applying equity method, the Company and its subsidiaries adjust net profit or loss of the investees, including the fair value adjustments on the net identifiable assets of the associates and joint ventures and the adjustments to align with the accounting policies of the Company and the Company's financial reporting periods. Current period investment income is then recognized based on the proportionate share of the Company and its subsidiaries in the investees' net profit or loss. Net losses of investees are recognized to the extent of the carrying value of long-term equity investments and any other constituting long-term equity investments in investees that in substance form part of the investments in the investees. The Company and its subsidiaries continue to recognize investment losses and provision if they bear additional obligations which meet the recognition criteria.

The Company and its subsidiaries adjust the carrying amount of the investment and directly recognize into related other comprehensive income based on their proportionate share on the movements of the investees' other comprehensive income.

When the investees appropriate profit or declare dividends, the carrying value of long-term equity investments are reduced correspondingly by the proportionate share of the distribution.

The Company and its subsidiaries determine at each reporting date whether there is any objective evidence that the investment in the associate or the joint venture is impaired. If this is the case, the Company and its subsidiaries calculate the amount of impairment as the difference between the recoverable amount of the associate or the joint venture and its carrying value and recognize the amount in the consolidated statement of comprehensive income.

Profits or losses resulting from transactions between the Company and its subsidiaries and the associates and joint ventures are recognized in the Company and its subsidiaries' financial statements only to the extent of the unrelated third party investor's interests in the associates and joint ventures. Loss from transactions between the Company and its subsidiaries and the associates and joint ventures is fully recognized and not eliminated when there is evidence for asset impairment.

If an investment in an associate becomes an investment in a joint venture or vice versa, retained interest is not remeasured. Instead, the investment continues to be accounted for under the equity method.

Gains and losses arising from dilution of investments in associates and joint ventures are recognized in the consolidated statement of comprehensive income.

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In all other cases, when the Company and its subsidiaries cease to have significant influence over an associate or joint control over a joint venture, it is accounted for as a disposal of the entire interest in that investee, with a resulting gain or loss being recognized in profit or loss. Any interest retained in that former investee at the date when significant influence or joint control is lost is recognized at fair value and this amount is regarded as the fair value on initial recognition of a financial asset (Note 2(k)).

(c) Segment reporting

The Company and its subsidiaries determine the operating segment based on the internal organization structure, management requirement and internal reporting system for purposes of presenting reportable segment information.

An operating segment represents a component of the Company and its subsidiaries that meets all the conditions below: (i) the component earns revenue and incurs expenses in its daily operating activities; (ii) chief operating decision maker of the Company and its subsidiaries regularly reviews the operating results of the component in order to make decisions on allocating resources and assessing performance; (iii) the financial position, operating results, cash flows and other related financial information of the component are available. When the two or more operating segments exhibit similar economic characteristics and meet certain conditions, the Company and its subsidiaries combine them as one reportable segment.

(d) Foreign currency translation

(i) Functional and presentation currency

Items included in the financial statements of each of the Company and its subsidiaries are measured using the currency of the primary economic environment in which the entity operates (the "functional currency"). The consolidated financial statements are presented in Renminbi ("RMB"), which is the Company's functional and presentation currency.

(ii) Transactions and balances

Foreign currency transactions are translated into the functional currency using the spot exchange rate on the transaction dates. As at the end of reporting period, foreign currency monetary items are translated into functional currency at the spot exchange rate as at the end of reporting period. Exchange differences are directly expensed in current period profit or loss unless they arises from foreign currency loans borrowed for purchasing or construction of qualifying assets which is eligible for capitalization or they arise from monetary items that qualify as hedging instruments in cash flow hedges which are recorded in other comprehensive income to the extent that the hedge is effective.

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(iii) Foreign subsidiaries

The operating results and financial position of the foreign subsidiaries are translated into presentation currency as follows:

Asset and liability items in each statement of financial position of foreign operations are translated at the closing rates at the end of reporting period; equity items excluding retained earnings are translated at the spot exchange rates at the date of the transactions. Income and expense items in the statement of comprehensive income of the foreign operations are translated at average exchange rates approximating the rate on transaction dates. All resulting translation differences are recognized in other comprehensive income.

The cash flows denominated in foreign currencies and cash flows of overseas subsidiaries are translated at average exchange rates approximating the rates at the dates when cash flows incurred. The effect of the foreign currency translation on the cash and cash equivalents is presented in the statement of cash flows separately.

On the disposal of a foreign operation (that is, a disposal of the Company and its subsidiaries' entire interest in a foreign operation, or a disposal involving loss of control over a subsidiary that includes a foreign operation, a disposal involving loss of joint control over a joint ventures that includes a foreign operation, or a disposal involving loss of significant influence over an associate that includes a foreign operation), all of the exchange differences accumulated in equity in respect of that operation attributable to the equity holders of the Company are reclassified to profit or loss.

In the case of a partial disposal that does not result in the Company and its subsidiaries losing control over a subsidiary that includes a foreign operation, the proportionate share of accumulated exchange differences are re-attributed to non-controlling interests and are not recognized in profit or loss. For all other partial disposals (that is, reductions in the Company and its subsidiaries' ownership interest in associates or joint venture that includes a foreign operation that do not result in the Company and its subsidiaries losing significant influence or joint control), the proportionate share of the accumulated exchange difference is reclassified to profit or loss.

(e) Property, plant and equipment

Property, plant and equipment consists of dam, port facilities, buildings, electric utility plant in service, transportation facilities, others and construction-in-progress ("CIP"). Property, plant and equipment acquired or constructed are initially recognized at cost and carried at the net value of cost less accumulated depreciation and accumulated impairment loss, unless classified as held for sale (or included in a disposal group that is classified as held for sale).

Cost of CIP comprises construction expenditures, other expenditures necessary for the purpose of preparing the CIP for its intended use, those borrowing costs incurred before the assets are ready for intended use that are eligible for capitalization. CIP is not depreciated until such time as the relevant asset is completed and ready for its intended use.

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Subsequent costs about property, plant and equipment are included in the asset's carrying amount only when it is probable that future economic benefits associated with the item will flow to the Company and its subsidiaries and the cost of the item can be measured reliably. The carrying amount of the replaced part is derecognized. Other subsequent expenditures not qualified for capitalization are charged in the current period profit or loss when they are incurred.

Depreciation of property, plant and equipment is provided based on book value of the asset less estimated residual value over the estimated useful life using straight-line method. For those impaired property, plant and equipment, depreciation is provided based on book value after deducting impairment provision over the estimated useful life of the asset. The estimated useful lives are as follows:

	Estimated useful lives
Dam	8 – 50 years
Port facilities	20 – 40 years
Buildings	8 – 30 years
Electric utility plant in service	5 – 30 years
Transportation facilities	8 – 27 years
Others	5 – 14 years

Where parts of an item of property, plant and equipment have different useful lives, the cost of the item is allocated on a reasonable basis between the parts and each part is depreciated separately. At the end of each year, the Company and its subsidiaries review the estimated useful lives, residual values and the depreciation method of the property, plant and equipment and make adjustment when necessary.

Property, plant and equipment is derecognized when it is disposed of, or is not expected to bring economic benefit through use or disposal. The amount of disposal proceeds arising from sale, transfer, disposal or write-off of the property, plant and equipment less book value and related tax expenses is recorded in 'operating expenses – others' in the statement of comprehensive income.

The carrying amount of property, plant and equipment is written down immediately to its recoverable amount when its carrying amount is greater than its recoverable amount (Note 2(j)).

(f) Investment property

Investment properties are land and/or buildings which are owned or held under a leasehold interest (Note 2(y)) to earn rental income and/or for capital appreciation. These include land held for a currently undetermined future use and property that is being constructed or developed for future use as investment property.

Investment properties are stated at fair value, unless they are still in the course of construction or development at the end of the reporting period and their fair value cannot be reliably measured at that time. Any gain or loss arising from a change in fair value or from the retirement or disposal of an investment property is recognized in profit or loss. Rental income from investment properties is accounted for as described in Note 2(x)(vi).

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(g) Power generation license

The Company and its subsidiaries acquired the power generation license as part of the business combination with Tuas Power Ltd. ("Tuas Power"). The power generation license is initially recognized at fair value at the acquisition date. The license has an indefinite useful life and is not amortized. The assessment that the license has an indefinite useful life is based on the expected renewal of power generation license without significant restriction and cost, together with the consideration on related future cash flows generated and the expectation of continuous operations. It is tested annually for impairment and carried at cost less accumulated impairment loss. Useful life of the power generation license is reviewed by the Company and its subsidiaries each financial period to determine whether events and circumstances continue to support the indefinite useful life assessment.

(h) Mining rights

Mining rights are stated at cost less accumulated amortization and impairment losses (Note 2(j)) and are amortized based on the units of production method utilizing only recoverable coal reserves as the depletion base, unless the mining rights are classified as held for sale (or included in a disposal group that is classified as held for sale).

(i) Goodwill

Goodwill arising from the acquisitions of subsidiaries, associates and joint ventures represents the excess of the consideration transferred, the amount of any non-controlling interest in the acquiree and the acquisition-date fair value of any previous equity interest in the acquiree over the Company and its subsidiaries' share of the net fair value of the net identifiable assets, liabilities and contingent liabilities of the acquiree at the date of acquisition.

Goodwill is stated at cost less accumulated impairment losses. Goodwill arising on a business combination is allocated to each cash-generating unit, or groups of cash generating units, that is expected to benefit from the synergies of the combination and is tested annually for impairment (Note 2(j)).

On disposal of a cash generating unit during the year, any attributable amount of purchased goodwill is included in the calculation of the profit or loss on disposal.

(j) Impairment of non-financial assets

The carrying amounts of property, plant and equipment, mining rights, intangible assets with definite useful lives, land use rights and long-term equity investments not accounted for as financial assets are reviewed at each reporting date to determine whether there is any indication of impairment. If any such indication exists, then the asset's recoverable amount is estimated. Goodwill, indefinite-lived intangible assets and intangible assets not yet available for sale are tested for impairment annually regardless of whether there are indications of impairment or more frequently if events or changes in circumstances indicate a potential impairment. An impairment loss is recognized if the carrying amount of an asset or cash-generating unit ("CGU") exceeds its recoverable amount.

The recoverable amount of an asset or CGU is the greater of its value in use and its fair value less cost to sell. For impairment testing, assets are grouped together into the smallest group of assets that generates cash inflows from continuing use that are largely independent of the cash inflows of other assets or CGUs.

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Subject to an operating segment ceiling test, CGUs to which goodwill has been allocated are aggregated so that the level at which impairment testing is performed reflects the lowest level at which goodwill is monitored for internal reporting purposes.

Goodwill acquired in a business combination is allocated to groups of CGUs that are expected to benefit from the synergies of the combination.

Impairment losses are recognized in profit or loss. Impairment losses recognized in respect of CGUs are allocated first to reduce the carrying amount of any goodwill allocated to the CGU (group of CGUs), and then to reduce the carrying amounts of the other assets in the CGU (group of CGUs) on a pro rata basis, except that the carrying value of an asset will not be reduced below its individual fair value less costs of disposal (if measurable) or value in use (if determinable).

An impairment loss in respect of goodwill is not reversed. Except for goodwill, all impaired non-financial assets are subject to review for possible reversal of impairment at each reporting date. A reversal of an impairment loss is limited to the asset's carrying amount that would have been determined had no impairment loss been recognized in prior year. Reversals of impairment losses are credited to profit or loss in the year in which the reversals are recognized.

(k) Financial instruments

Financial assets are classified in the following categories at initial recognition: at fair value through profit or loss, loans and receivables and available-for-sale. The classification depends on the intention and ability of the Company and its subsidiaries to hold the financial assets.

(i) Financial assets at fair value through profit or loss

Financial assets at fair value through profit or loss include financial assets held for trading and designated upon initial recognition as at fair value through profit or loss, and contingent consideration of the acquirer in a business combination. A financial asset is classified in this category if acquired principally for the purpose of selling in the short term. Derivatives are classified as held for trading unless they are designated as hedges. Assets in this category are classified as current assets if expected to be settled within 12 months; otherwise, they are classified as non-current.

(ii) Loans and receivables

Loans and receivables refer to the non-derivative financial assets for which there is no quotation in the active market with fixed or determinable amount. They are included in current assets, except for maturities greater than 12 months after the end of reporting period which are classified as non-current assets. Loans and receivables are primarily included in as 'accounts receivable', 'other receivables and assets' and 'other non-current assets' in the statement of financial position.

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(iii) Available-for-sale financial assets

Available-for-sale financial assets are non-derivative financial assets that are either designated in this category or not classified in any of the other categories. They are included in current assets when management intends to dispose of the available-for-sale financial assets within 12 months of the end of reporting period, otherwise, they are classified as non-current assets.

(iv) Recognition and measurement

Regular purchases and sales of financial assets are recognized at fair value initially on trade-date – the date on which the Company and its subsidiaries commit to purchase or sell the asset. Transaction costs relating to financial assets at fair value through profit or loss are directly expensed in the profit or loss as incurred. Transaction costs for other financial assets are included in the carrying amount of the asset at initial recognition. Financial assets are derecognized when the rights to receive cash flows from the financial assets have expired or have been transferred and all risks and rewards related to the ownership of the financial assets have been transferred to the transferee.

Financial assets at fair value through profit or loss and available-for-sale are subsequently measured at fair value. When an active market exists for a financial instrument, fair value is determined based on quoted prices in the active market. When no active market exists, fair value is determined by using valuation techniques. When applying valuation techniques, the Company and its subsidiaries maximize the use of relevant observable inputs and minimize the use of unobservable inputs.

Changes in the fair value of financial assets at fair value through profit or loss are recorded in 'gain/(loss) on fair value changes of financial assets/liabilities'.

Investments in equity instruments that do not have a quoted market price in an active market and whose fair value cannot be reliably measured are measured at cost. Loans and receivables are carried at amortized cost using the effective interest method.

Except for impairment loss and translation differences on monetary financial assets, changes in the fair value of available-for-sale financial assets are recognized in other comprehensive income. When these financial assets are derecognized, the accumulated fair value adjustments recognized in equity are included in the statement of comprehensive income as 'other investment income'. Dividends on available-for-sale financial assets are recorded in 'other investment income' when the right of the Company and its subsidiaries to receive payments is established.

(v) Impairment of financial assets

Except for financial assets at fair value through profit or loss, the Company and its subsidiaries perform assessment on the book value of financial assets at the end of reporting period. Provision for impairment is made when there is objective evidence showing that a financial asset is impaired.

For investments in associates and joint ventures, the impairment loss is measured by comparing the recoverable amount of the investment with its carrying amount.

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The impairment loss is reversed if there has been a favourable change in the estimates used to determine the recoverable amount.

In the case of equity investments classified as available for sale, a significant or prolonged decline in the fair value of the investment below its cost is evidence that the assets are impaired. If any such evidence exists for available-for-sale financial assets, the cumulative loss, measured as the difference between the acquisition cost and the current fair value, less any impairment loss on that financial asset previously recognized in profit or loss, is removed from equity and recognized in profit or loss. Impairment losses recognized in the profit or loss on equity instruments are not reversed through the profit or loss.

When financial assets carried at amortized cost are impaired, the carrying amount of the financial assets is reduced to the present value of estimated future cash flows (excluding future credit losses that have not been incurred) discounted at the financial asset's original effective interest rate. The impaired amount is recognized as assets impairment loss in the current period. If there is objective evidence that the value of the financial assets has recovered as a result of objective changes in circumstances occurring after the impairment loss was originally recognized, the originally recognized impairment loss is reversed through profit or loss. For the impairment test of receivables, please refer to Note 2(l).

(vi) Derivative financial instruments and hedging activities

Derivatives are initially recognized at fair value on the date a derivative contract is entered into and are subsequently remeasured at their fair value. Gain or loss arising from subsequent change in the fair value of derivative financial instruments is recognized in profit or loss except for the effective portions of gain or loss on the derivative financial instruments designated as cash flow hedges which are recognized directly in other comprehensive income. Cash flow hedge represents a hedge against the exposure to variability in cash flows, which such cash flow is originated from a particular risk associated with highly probable forecast transactions and variable rate borrowings and which could affect the statement of comprehensive income.

The hedged items of cash flow hedge are the designated items with respect to the risks associated with future cash flow change resulting from variability in cash flows of a recognized asset or liability or a highly probable forecast transaction or the foreign currency risk of a committed future transaction. Hedging instruments are designated derivative for cash flow hedge whose cash flows are expected to offset changes in the cash flows of a hedged item.

The full fair value of a hedging derivative is classified as a non-current asset or liability when the remaining maturity of the hedge item is more than 12 months.

The Company and its subsidiaries document their assessments, both at hedge inception and on an ongoing basis, of whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in cash flows of hedged items. The Company and its subsidiaries apply ratio analysis method to evaluate the ongoing effectiveness of the cash flow hedge.

The effective portion of changes in the fair value of derivatives that are designated and qualify as cash flow hedges are recognized in other comprehensive income. The gain or loss relating to the ineffective portion is recognized immediately in the statement of comprehensive income within 'gain/(loss) on fair value changes of financial assets/liabilities'.

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Amounts accumulated in equity are reclassified to the profit or loss in the periods when the hedged item affects profit or loss. The gain or loss relating to the effective portion of interest rate swaps hedging variable rate borrowings is recognized in the statement of comprehensive income within 'interest expense'. The gain or loss relating to the effective portion of exchange forward hedging foreign currency denominated payables is recognized in the statement of comprehensive income within 'exchange gain/(loss) and bank charges, net'. However, when the forecast transaction that is hedged results in the recognition of a non-financial asset, the gains and losses previously deferred in equity are transferred from equity and included in the initial measurement of the cost of the asset. In the case where the Company and its subsidiaries expect all or a portion of net loss previously recognized directly in other comprehensive income will not be recovered in future financial periods, the irrecoverable portion will be reclassified into profit or loss.

When a hedging instrument expires or is sold, terminated or exercised or when a hedge no longer meets the criteria for hedge accounting, the Company and its subsidiaries will discontinue hedge accounting. Any cumulative gain or loss existing in equity at that time remains in equity and is subsequently recognized when the forecast transaction is ultimately recognized in the profit or loss. When a forecast transaction is no longer expected to occur, the cumulative gain or loss that was reported in equity is immediately transferred to the statement of comprehensive income within 'gain/(loss) on fair value changes of financial assets/liabilities'.

(l) Loans and receivables

Loans and receivables, which primarily include accounts receivable, other receivables and other non-current assets, are recognized initially at fair value. Loans and receivables are subsequently measured at amortized cost less provision for doubtful debts using the effective interest method.

The Company and its subsidiaries establish an allowance for impairment that represents its estimate of incurred losses in respect of receivables. The main components of this allowance are a specific loss component that relates to individually significant exposures, and a collective loss component established for groups of similar assets in respect of losses that have been incurred but not yet identified. The collective loss allowance is determined based on historical data of payment statistics for similar financial assets.

When there is objective evidence that the Company and its subsidiaries will not be able to collect all amounts due according to the original terms of the receivables, impairment test is performed and related provision for doubtful accounts is made based on the shortfall between carrying amounts and respective present value of estimated future cash flows. The carrying amounts of the receivables are reduced through the use of allowance accounts, and the amount of the provision is recognized in the statement of comprehensive income within 'operating expenses – others'. When a receivable is uncollectible, it is written off against the allowance account for the receivable. Subsequent recoveries of amounts previously written off are credited against 'operating expenses – others' in the statement of comprehensive income.

(m) Inventories

Inventories include fuel for power generation, materials for repairs and maintenance and spare parts, and are stated at lower of cost and net realizable values.

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Inventories are initially recorded at cost and are charged to fuel costs or repairs and maintenance, respectively when used, or capitalized to property, plant and equipment when installed, as appropriate, using weighted average cost basis. Cost of inventories includes costs of purchase and transportation costs.

When the forecast transaction that is hedged results in the recognition of the inventory, the gains and losses previously deferred in equity are transferred from equity and included in the initial measurement of the cost of the inventory.

Provision for inventory obsolescence is determined by the excess of cost over net realizable value. Net realizable values are determined based on the estimated selling price less estimated conversion costs during power generation, selling expenses and related taxes in the ordinary course of business.

(n) Related parties

Parties are considered to be related if one party has the ability, directly or indirectly, to control the other party or exercise significant influence over the other party in making financial and operating decisions. Parties are also considered to be related if they are subject to common control or jointly control of the same third party; one party is controlled or jointly controlled by a third party and the other party is an associate or a joint venture of the same third party.

(o) Cash and cash equivalents

Cash and cash equivalents listed in the statement of cash flows represents cash in hand, call deposits held with banks and other financial institutions, and other short-term (3 months or less), highly-liquid investments that are readily convertible to known amounts of cash and are subject to an insignificant risk of changes in value. Bank overdrafts that are repayable on demand and form an integral part of the cash management are also included as a component of cash and cash equivalents for the purpose of the consolidated statement of cash flow.

(p) Borrowings

Borrowings are recognized initially at fair value less transaction costs and subsequently measured at amortized cost using the effective interest method. Borrowings are classified as current liabilities unless the Company and its subsidiaries have an unconditional right to defer settlement of the liability for at least 12 months after the end of reporting period.

(q) Borrowing costs

General and specific borrowing costs directly attributable to the acquisition, construction or production of qualifying assets, which are assets that necessarily take a substantial period of time to get ready for their intended use or sale, are added to the cost of those assets. The capitalization of borrowing costs as part of the cost of a qualifying asset commences when expenditure for the asset is being incurred, borrowing costs are being incurred and activities that are necessary to prepare the asset for its intended use or sale are in progress. Capitalization of borrowing costs is suspended or ceases when substantially all the activities necessary to prepare the qualifying asset for its intended use or sale are interrupted or complete.

The amount of specific borrowing costs capitalized is net of the investment income on any temporary investment of the funds pending expenditure on the asset.

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All other borrowing costs are recognized in profit or loss in the period in which they are incurred.

(r) Share Capital

Ordinary shares are classified as equity. Incremental costs directly attributable to the issue of new shares are shown in equity as a deduction, net of tax, from the proceeds.

(s) Perpetual corporate bond

Perpetual corporate bond is classified as equity if it is non-redeemable, or redeemable only at the Company's option, and any interests are discretionary. Interests on perpetual corporate bonds classified as equity are recognised as distributions within equity.

(t) Payables

Payables primarily include accounts payable and other liabilities, and are recognized initially at fair value and subsequently measured at amortized cost using the effective interest method.

(u) Taxation

(i) Value-added tax ("VAT")

The domestic power, heat and goods sales of the Company and its subsidiaries are subject to VAT. VAT payable is determined by applying 17% (13% or 11% on heat) on the taxable revenue after offsetting deductible input VAT of the period.

The applicable tax rate of VAT in respect of the lease of tangible movable properties, transportation industry and other modern services industry are 17%, 11% and 6%, respectively.

According to the relevant regulations of Ministry of Finance of PRC and State Administration of Taxation, the transformation from Business Tax to VAT launched nation-wide from 1 May 2016 and all business tax taxpayers in the construction industry, real estate industry, financial industry, living services were included. The applicable tax rate of VAT in respect of sectors including construction services, lease of immovables, sale of immovables and transfer of land use rights is 11%, and in respect of financial and living services is 6%.

(ii) Goods and service tax ("GST")

The power sales of the subsidiaries in Singapore are subject to goods and service tax of the country where they operate. GST payable is determined by applying 7% on the taxable revenue after offsetting deductible GST of the period.

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(iii) Current and deferred income tax

The income tax expense for the period comprises current and deferred income tax. Income tax expense is recognized in profit or loss, except to the extent that it relates to items recognized in other comprehensive income or directly in equity. In this case, the tax is also recognized in other comprehensive income or directly in equity, respectively.

Deferred income tax assets and liabilities are recognized based on the differences between tax bases of assets and liabilities and respective book values (temporary differences). For deductible tax losses or tax credit that can be brought forward in accordance with tax law requirements for deduction of taxable income in subsequent years, it is considered as temporary differences and related deferred income tax assets are recognized. No deferred income tax liability is recognized for temporary difference arising from initial recognition of goodwill. For those temporary differences arising from initial recognition of an asset or liability in a non-business combination transaction that affects neither accounting profit nor taxable profit (or deductible loss) at the time of the transaction, no deferred income tax asset and liability is recognized. The temporary differences relating to investments in subsidiaries to the extent that, in the case of taxable differences, the Company and its subsidiaries control the timing of the reversal and it is probable that the differences will not reverse in the foreseeable future, or in the case of deductible differences, unless it is probable that they will reverse in the future.

The Company and its subsidiaries recognize deferred income tax assets to the extent that it is probable that taxable profit will be available to offset the deductible temporary difference, deductible tax loss and tax credit.

At the end of reporting period, deferred income tax assets and liabilities are measured at the tax rates that are expected to apply to the period when the asset is realized or liability is settled.

The carrying amount of a deferred tax asset is reviewed at the end of each reporting period and is reduced to the extent that it is no longer probable that sufficient taxable profits will be available to allow the related tax benefit to be utilised. Any such reduction is reversed to the extent that it becomes probable that sufficient taxable profits will be available.

Deferred income tax assets and deferred income tax liabilities are offset when meeting all the conditions below:

(1) The Company and its subsidiaries have the legal enforceable right to offset current income tax assets and current income tax liabilities;

(2) Deferred income tax assets and deferred income tax liabilities are related to the income tax levied by the same tax authority of the Company and its subsidiaries.

(v) Employee benefits

Employee benefits include all expenditures relating to the employees for their services. The Company and its subsidiaries recognize employee benefits as liabilities during the accounting period when employees render services and allocate to related cost of assets and expenses based on different beneficiaries.

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In connection with pension obligations, the Company and its subsidiaries operate various defined contribution plans in accordance with the local conditions and practices in the countries and provinces in which they operate. A defined contribution plan is a pension plan under which the Company and its subsidiaries pay fixed contributions into a separate publicly administered pension insurance plan on mandatory and voluntary bases. The Company and its subsidiaries have no legal or constructive obligations to pay further contributions if the fund does not hold sufficient assets to pay all employees the benefits relating to employee service in the current and prior periods. The contributions are recognized as employee benefit when incurred. Prepaid contributions are recognized as assets to the extent that a cash refund or a reduction in the future payment is available.

(w) Government grants

Government grants are recognized when the Company and its subsidiaries fulfill the conditions attached to them and they are probable to be received. When government grants are received in the form of monetary assets, they are measured at the amount received or receivable. When the grant is in the form of non-monetary assets, it is measured at fair value. When fair value cannot be measured reliably, nominal amount is assigned.

Asset-related government grant is recognized as deferred income and is amortized evenly in profit or loss over the useful lives of related assets.

Income-related government grant that is used to compensate subsequent related expenses or losses of the Company and its subsidiaries are recognized as deferred income and recorded in the profit or loss when related expenses or losses incurred. When the grant is used to compensate expenses or losses that were already incurred, they are directly recognized in current period profit or loss.

(x) Revenue and income recognition

Revenue and income are recognized based the following methods:

Revenue and income are recognized when it is probable that the economic benefits associated with the transaction will flow to the Company and its subsidiaries and the amount of the revenue and income can be measured reliably.

(i) Electricity and heat sales revenue

Electricity and heat sales revenue represents the fair value of the consideration received or receivable for electricity and heat sold in the ordinary course of the activities of the Company and its subsidiaries (net of VAT or GST). Revenue is earned and recognized upon transmission of electricity to the customers or the power grid controlled and owned by the respective regional or provincial grid companies.

(ii) Goods sales revenue

Goods sales revenue represents the fair value of the consideration received or receivable for the sale of the goods in the ordinary course of the activities of the Company and its subsidiaries. Goods sales revenue is recognized when the goods is delivered to the customers and there is no unfulfilled obligation that could affect the customer's acceptance of the goods.

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(iii) Service revenue

Service revenue refers to amounts received from service of port loading, conveying and transportation. The Company and its subsidiaries recognize revenue when the relevant service is provided.

(iv) Dividend income

Dividend income from unlisted investments is recognized when the shareholder's right to receive payment is established. Dividend income from listed investments is recognized when the share price of the investment goes ex-dividend.

(v) Interest income

Interest income from deposits is recognized on a time proportion basis using effective interest method. Interest income from the finance lease is recognized on a basis that reflects a constant periodic rate of return on the net investment in the finance lease.

(vi) Rental income from operating leases

Rental income receivable under operating leases is recognized in profit or loss in equal instalments over the periods covered by the lease term, except where an alternative basis is more representative of the pattern of benefits to be derived from the use of the leased asset. Lease incentives granted are recognized in profit or loss as an integral part of the aggregate net lease payments receivable. Contingent rentals are recognized as income in the accounting period in which they are earned.

(y) Leases

Leases where all the risks and rewards incidental to ownership of the assets are in substance transferred to the lessees are classified as finance leases. All other leases are operating leases.

(i) Operating leases

Operating lease expenses are capitalized or expensed on a straight-line basis over the lease term.

The cost of acquiring land held under an operating lease is amortized on a straight-line basis over the period of the lease term.

(ii) Finance lease

The Company and its subsidiaries recognize the aggregate of the minimum lease receipts and the initial direct costs on the lease inception date as the receivable. The difference between the aggregate of the minimum lease receipts and the initial direct costs and sum of their respective present values is recognized as unrealized finance income. The Company and its subsidiaries adopt the effective interest method to allocate such unrealized finance income over the lease term. At the end of reporting period, the Company and its subsidiaries present the net amount of finance lease receivable after deducting any unrealized finance income in non-current assets and current assets, respectively.

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Please refer to Note 2(k)(u) for impairment test on finance lease receivables.

Where the Company and its subsidiaries acquire the use of assets under finance leases, the amounts representing the fair value of the leased asset, or, if lower, the present value of the minimum lease payments, of such assets are included in fixed assets and the corresponding liabilities, net of finance charges, are recorded as obligations under finance leases. Depreciation is provided at rates which write off the cost or valuation of the assets over the term of the relevant lease or, where it is likely the Company and its subsidiaries will obtain ownership of the asset, the life of the asset, as set out in Note 2(e). Impairment losses are accounted for in accordance with the accounting policy as set out in Note 2(j). Finance charges implicit in the lease payments are charged to profit or loss over the period of the leases so as to produce an approximately constant periodic rate of charge on the remaining balance of the obligations for each accounting period. Contingent rentals are charged to profit or loss in the accounting period in which they are incurred.

(z) Purchase of electricity

The overseas subsidiary of the Company recognizes electricity purchase cost when it purchases the electricity and transmits to its customers.

(aa) Financial guarantee contracts

The Company issues financial guarantee contracts that transfer significant insurance risk. Financial guarantee contracts are those contracts that require the issuer to make specified payments to reimburse the holders for losses they incur because specified debtors fail to make payments when due in accordance with the original or modified terms of debt instruments. Where the Company issues a financial guarantee, the fair value of the guarantee is initially recognized as deferred income within accounts payable and other liabilities. The fair value of financial guarantees issued at the time of issuance is determined by reference to fees charged in an arm's length transaction for similar services, when such information is obtainable, or is otherwise estimated by reference to interest rate differentials, by comparing the actual rates charged by lenders when the guarantee is made available with the estimated rates that lenders would have charged, had the guarantees not been available, where reliable estimates of such information can be made. Where consideration is received or receivable for the issuance of the guarantee, the consideration is recognized in accordance with the Company's policies applicable to that category of asset. Where no such consideration is received or receivable, an immediate expense is recognized in profit or loss on initial recognition of any deferred income. The amount of the guarantee initially recognized as deferred income is amortized in profit or loss over the term of the guarantee as income from financial guarantees issued. In addition, provisions are recognised if and when (i) it becomes probable that the holder of the guarantee will call upon the Company under the guarantee, and (ii) the amount of that claim on the Company is expected to exceed the amount currently carried in trade and other payables in respect of the guarantee, i.e. the amount initially recognised, less accumulated amortisation.

(ab) Dividend distribution

Dividend distribution to the shareholders of the Company and its subsidiaries is recognized as a liability in the period when the dividend is approved in the shareholders' meeting.

(ac) Contingencies

Contingent liabilities are not recognized in the financial statements. They are disclosed unless the possibility of an outflow of resources embodying economic benefits is remote. Contingent assets are not recognized in the financial statements but disclosed when an inflow of economic benefit is probable.

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(ad) Standards and amendments to published standards that are not yet effective but relevant to the Company and its subsidiaries

The following are standards or amendments to existing standards that have been published and are mandatory for the accounting periods beginning on or after 1 January 2018, but the Company and its subsidiaries have not early adopted:

• IFRIC 22,"Foreign currency transactions and advance consideration", which will be effective for accounting periods beginning on or after 1 January 2018.

• IFRS 15, "Revenue from contracts with customers", which will be effective for accounting periods beginning on or after 1 January 2018.

• IFRS 9, "Financial instrument (2014)", which will be effective for accounting periods beginning on or after 1 January 2018.

• IFRS 16, "Leases", which will be effective for accounting periods beginning on or after 1 January 2019.

• Amendments to IAS 40, "Investment property: Transfers of investment property", which will be effective for accounting periods beginning on or after 1 January 2018.

• IFRIC 23, "Uncertainty over income tax treatments", which will be effective for accounting periods beginning on or after 1 January 2019.

• Included in "Annual improvements to IFRSs 2014-2016 Cycle", IAS 28, "Investments in Associates and Joint Ventures", which will be effective for accounting periods beginning on or after 1 January 2018.

The Company and its subsidiaries are in the process of making an assessment of what the impact of these amendments and new standards is expected to be in the period of initial application. While the assessment has been substantially completed for IFRS 9 and IFRS 15, the actual impacts upon the initial adoption of the standards may differ as the assessment completed to date is based on the information currently available to the Company and its subsidiaries, and further impacts may be identified before the standards are initially applied in the Company and its subsidiaries' interim financial report for the six months ending 30 June 2018. The Company and its subsidiaries may also change its accounting policy elections, including the transition options, until the standards are initially applied in that financial report.

(i) IFRS 9, Financial instruments (2014)

IFRS 9 will replace the current standard on accounting for financial instruments, IAS 39, Financial instruments: Recognition and measurement. IFRS 9 introduces new requirements for classification and measurement of financial assets, including the measurement of impairment for financial assets and hedge accounting. On the other hand, IFRS 9 incorporates without substantive changes the requirements of IAS 39 for recognition and derecognition of financial instruments and the classification and measurement of financial liabilities.

IFRS 9 is effective for annual periods beginning on or after 1 January 2018 on a retrospective basis. The Company and its subsidiaries plan to use the exemption from restating comparative information and will recognise any transition adjustments against the opening balance of equity at 1 January 2018.

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Expected impacts of the new requirements on the consolidated financial statements are as follows:

• The Company and its subsidiaries have assessed that their financial assets currently measured at amortised cost and FVTPL will continue with their respective classification and measurements upon the adoption of IFRS 9;

• With respect to the Company and its subsidiaries' financial assets currently classified as "available-for-sale", these are equity investments which the Company and its subsidiaries have the option to irrevocably designate as FVTOCI (without recycling) on transition to IFRS 9. The Company and its subsidiaries plan to elect this designation option for any of the investments held on 1 January 2018 and will recognise any fair value changes in respect of these investments in other comprehensive income as they arise. The Company and its subsidiaries are in the process of assessing the fair value of the available-for-sale financial assets currently measured at cost less impairment and will disclose the impact to the opening balance of the Company and its subsidiaries' equity as 1 January 2018 in interim financial report for the six months ending 30 June 2018.

• The classification and measurement requirements for financial liabilities under IFRS 9 are largely unchanged from IAS 39, except that IFRS 9 requires the fair value change of a financial liability designated at FVTPL that is attributable to changes of that financial liability's credit risk to be recognised in other comprehensive income (without reclassification to profit or loss). The Company and its subsidiaries currently do not have any above mentioned financial liabilities designated at FVTPL and therefore this new requirement will not have any impact on the Company and its subsidiaries on adoption of IFRS 9.

• The new impairment model in IFRS 9 replaces the "incurred loss" model in IAS 39 with an "expected credit loss" model. Under the expected credit loss model, it will no longer be necessary for a loss event to occur before an impairment loss is recognised. Instead, an entity is required to recognise and measure either a 12-month expected credit loss or a lifetime expected credit loss, depending on the asset and the facts and circumstances. The Company and its subsidiaries expect that the application of the expected credit loss model will result in earlier recognition of credit losses. Based on a preliminary assessment, the Company and its subsidiaries do not expect material change to the loss allowance for the Company and its subsidiaries' trade debtors and other debt investment held at amortised cost and net investment in finance lease.

• IFRS 9 does not fundamentally change the requirements relating to measuring and recognising ineffectiveness under IAS 39. However, greater flexibility has been introduced to the types of transactions eligible for hedge accounting. The Company and its subsidiaries have assessed that its current hedge relationships will qualify as continuing hedges upon the adoption of IFRS 9 and therefore it expects that the accounting for its hedging relationships will not be significantly impacted.

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(ii) IFRS 15, Revenue from contracts with customers

IFRS 15 establishes a comprehensive framework for recognising revenue from contracts with customers. IFRS 15 will replace the existing revenue standards, IAS 18, Revenue, which covers revenue arising from sale of goods and rendering of services, and IAS 11, Construction contracts, which specifies the accounting for revenue from construction contracts. IFRS 15, deals with revenue recognition and establishes principles for reporting useful information to users of financial statements about the nature, amount, timing and uncertainty of revenue and cash flows arising from an entity's contracts with customers. IFRS 15 provides that an entity should recognise revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for the goods or services provided and establishes a five step model to be applied by an entity in evaluating its contracts with customers. Revenue is recognised when a customer obtains control of a good or service and thus has the ability to direct the use and obtain the benefits from the good or service. An entity should adopt IFRS 15 in transition using either modified retrospective approach or cumulative effect method.

During 2017, the Company substantially completed its assessment of the potential impact of the new standard, including performing a review of revenue streams and customer contracts in order to evaluate the effects that this standard may have on the consolidated statement of comprehensive income and consolidated statement of financial position. The Company and its subsidiaries' revenues are substantially generated from the sales of power heat and other goods. Effective 1 January 2018, the Company and its subsidiaries adopted IFRS 15 utilising the cumulative effect method, which results in the Company and its subsidiaries' retaining prior period comparative figures as reported under the previous standards and recognising the cumulative effect of applying IFRS 15 as an adjustment to the opening balance of retained earnings as at the date of initial adoption, and will provide additional disclosures comparing results to previous IFRS in its 2018 consolidated financial statements. The Company and its subsidiaries plan to apply the new revenue standard only to contracts not completed as of the date of initial application, referred to as open contracts. Since the number of open contracts at 31 December is limited, and more than 95% of the Company and its subsidiaries' revenue comprised of contracts with customers from rate-regulated sales of power and heat, where revenue will continue to be recognised upon transmission to the customers, the Company and its subsidiaries expects that the adoption of IFRS 15 will not have material impact on the consolidated financial statements.

(iii) IFRS 16, Lease

As disclosed in Note 2(y), currently the Company and its subsidiaries classify leases into finance leases and operating leases and account for the lease arrangements differently, depending on the classification of the lease. The Company and its subsidiaries enter into some leases as the lessor and others as the lessee.

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IFRS 16 is not expected to impact significantly on the way that lessors account for their rights and obligations under a lease. However, once IFRS 16 is adopted, lessees will no longer distinguish between finance leases and operating leases. Instead, subject to practical expedients, lessees will account for all leases in a similar way to current finance lease accounting, i.e. at the commencement date of the lease the lessee will recognise and measure a lease liability at the present value of the minimum future lease payments and will recognise a corresponding "right-of-use" asset. After initial recognition of this asset and liability, the lessee will recognise interest expense accrued on the outstanding balance of the lease liability, and the depreciation of the right-of-use asset, instead of the current policy of recognising rental expenses incurred under operating leases on a systematic basis over the lease term. As a practical expedient, the lessee can elect not to apply this accounting model to short-term leases (i.e. where the lease term is 12 months or less) and to leases of low-value assets, in which case the rental expenses would continue to be recognised on a systematic basis over the lease term.

IFRS 16 will primarily affect the Company and its subsidiaries' accounting as a lessee of leases for properties, plant and equipment which are currently classified as operating leases. The application of the new accounting model is expected to lead to an increase in both assets and liabilities and to impact on the timing of the expense recognition in the statement of profit or loss over the period of the lease. As disclosed in Note 39(b), at 31 December 2017 the Company and its subsidiaries' future minimum lease payments under non-cancellable operating leases amount to RMB1,487 million for property, plant and equipment and land use rights, the majority of which is payable either between 1 and 5 years after the reporting date or in more than 5 years. Some of these amounts may therefore need to be recognised as lease liabilities, with corresponding right-of-use assets, once IFRS 16 is adopted. The Company and its subsidiaries will need to perform a more detailed analysis to determine the amounts of new assets and liabilities arising from operating lease commitments on adoption of IFRS 16, after taking into account the applicability of the practical expedient and adjusting for any leases entered into or terminated between now and the adoption of IFRS 16 and the effects of discounting.

There are no other amendments and new standards that are not yet effective that would be expected to have a material impact on the Company and its subsidiaries' consolidated financial statements.

3 Financial and capital risks management

(a) Financial risk management

Risk management, including the management on the financial risks, is carried out under the instructions of the Strategic Committee of Board of Directors and the Risk Management Team. The Company works out general principles for overall management as well as management policies covering specific areas. In considering the importance of risks, the Company identifies and evaluates risks at head office and individual power plant level, and requires analysis and proper communication of the information collected periodically.

SinoSing Power and its subsidiaries are subject to financial risks that are different from the entities operating within the PRC. They have a series of controls in place to maintain the cost of risks occurring and the cost of managing the risks at an acceptable level. Management continually monitors the risk management process to ensure that an appropriate balance between risk and control is achieved. SinoSing Power and its subsidiaries have their written policies and financial authorization limits in place which are reviewed periodically. These financial authorization limits seek to mitigate and eliminate operational risks by setting approval thresholds required for entering into contractual obligations and investments.

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(i) Market risk

(1) Foreign exchange risk

Foreign exchange risk of the entities operating within the PRC primarily arises from loans denominated in foreign currencies of the Company and its subsidiaries. SinoSing Power and its subsidiaries are exposed to foreign exchange risk on bank balances, accounts receivable, other receivables and assets, accounts payable and other liabilities that are denominated primarily in US$, a currency other than Singapore dollar ("S$"), their functional currency. Please refer to Note 18, 19, 24, 27 and 35 for details. The Company and its subsidiaries manage exchange risk through closely monitoring interest and exchange market.

As at 31 December 2017, if RMB had weakened/strengthened by 5% (2016: 5%) against US$ and 3% (2016: 3%) against EUR ("€") with all other variables constant, the Company and its subsidiaries would further recognize exchange loss/gain amounted RMB112 million (2016: RMB142 million) and RMB7million (2016: RMB9 million), respectively. The ranges of such sensitivity disclosed above were based on the observation on the historical trend of related exchange rates during the previous year under analysis.

As at 31 December 2017, if S$ had weakened/strengthened by 10% (2016: 10%) against US$ with all other variables constant, the Company and its subsidiaries would further recognize exchange gain/loss amounted RMB30million (2016: exchange loss/gain RMB10 million). The ranges of such sensitivity disclosed above were based on the management's experience and forecast.

SinoSing Power and its subsidiaries also are exposed to foreign exchange risk on fuel purchases that are denominated primarily in US$. They substantially hedge their estimated foreign currency exposure in respect of forecast fuel purchases over the following three months using primarily foreign currency contracts.

(2) Price risk

The available-for-sale financial assets of the Company and its subsidiaries are exposed to equity security price risk.

Detailed information relating to the available-for-sale financial assets is disclosed in Note 10. The Company closely monitors the pricing trends in the open market in determining its long-term strategic stakeholding decisions.

The Company and its subsidiaries are exposed to fuel price risk on fuel purchases. In particular, SinoSing Power and its subsidiaries use fuel oil swap to hedge against such a risk and designate them as cash flow hedges. Please refer to Note 14 for details.

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(3) Cash flow interest rate risk

The interest rate risk of the Company and its subsidiaries primarily arises from long-term loans. Loans borrowed at variable rates expose the Company and its subsidiaries to cash flow interest rate risk. The exposures of these risks are disclosed in Note 24 to the financial statements. The Company and its subsidiaries have entered into interest rate swap agreements with banks to hedge against a portion of cash flow interest rate risk.

As at 31 December 2017, if interest rates on RMB-denominated borrowings had been 50 basis points higher/lower with all other variables held constant, interest expense for the year would have been RMB789 million (2016: RMB520 million) higher/lower. If interest rates on US$-denominated borrowings had been 50 basis points higher/lower with all other variables held constant, interest expense for the year would have been RMB6 million (2016: RMB7 million) higher/lower. If interest rates on S$-denominated borrowings had been 100 basis points higher/lower with all other variables held constant, interest expense for the year would have been RMB72 million (2016: RMB59 million) higher/lower. The ranges of such sensitivity disclosed above were based on the observation on the historical trend of related interest rates during the previous year under analysis.

The Company has entered into a floating-to-fixed interest rate swap agreement to hedge against cash flow interest rate risk of a loan. According to the interest rate swap agreement, the Company agrees with the counterparty to settle the difference between fixed contract rates and floating-rate interest amounts calculated by reference to the agreed notional amounts quarterly until 2019. Tuas Power Generation Pte. Ltd. ("TPG") also entered into a number of floating-to-fixed interest rate swap agreements to hedge against cash flow interest rate risk of a loan. According to the interest rate swap agreements, TPG agrees with the counterparty to settle the difference between fixed contract rates and floating-rate interest amounts calculated by reference to the agreed notional amount semi-annually until 2020. Please refer to Note 14 for details.

(ii) Credit risk

Credit risk arises from bank deposits, accounts receivable, other receivables and assets, available-for-sale financial assets and other non-current assets. The maximum exposures of available-for-sale financial assets, other non-current assets, other receivables and assets, accounts receivable and bank deposits are disclosed in Note 10, 16, 18, 19 and 35 to the financial statements, respectively.

Bank deposits are placed with reputable banks and financial institutions. In addition, a significant portion is deposited with a non-bank financial institution which is a related party of the Company. The Company has a director on the Board of this non-bank financial institution and exercises influence. Corresponding maximum exposures of these bank deposits are disclosed in Note 36 (a)(i) to the financial statements.

Most of the power plants of the Company and its subsidiaries operating within the PRC sell electricity generated to their sole customers, the power grid companies of their respective provinces or regions where the power plants operate. These power plants communicate with their individual grid companies periodically and believe that adequate provision for doubtful accounts have been made in the financial statements.

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Singapore subsidiaries derive revenue mainly from sale of electricity to the National Electricity Market of Singapore operated by Energy Market Company Pte. Ltd., which does not have high credit risk. Singapore subsidiaries also derive revenue mainly from retailing electricity to consumers with monthly consumption of more than 2,000kWh. These customers engage in a wide spectrum of manufacturing and commercial activities in a variety of industries. Singapore subsidiaries hold cash deposits of RMB161.37 million (2016: RMB175.86 million) and guarantees from creditworthy financial institutions as a security from these customers.

(iii) Liquidity risk

Liquidity risk management is to primarily ensure the ability of the Company and its subsidiaries to meet its liabilities as and when they are fall due. The liquidity reserve comprises the undrawn borrowing facility and cash and cash equivalents available as at each month end in meeting its liabilities.

The Company and its subsidiaries maintain flexibility in funding by cash generated by their operating activities and availability of committed credit facilities.

Financial liabilities due within 12 months are presented as current liabilities in the statement of financial position. The cash flows of derivative financial liabilities and repayment schedules of the long-term loans and long-term bonds are disclosed in Note 14, 24 and 25, respectively.

(b) Fair value estimation

(i) Fair value measurements

The table below analyses financial instruments carried at fair value, by valuation method. The different levels have been defined as follows:

• Level 1- Quoted prices (unadjusted) in active markets for identical assets or liabilities.

• Level 2- Inputs other than quoted prices included within level 1 that are observable for the asset or liability, either directly (that is, as prices) or indirectly (that is, derived from prices).

• Level 3- Inputs for the asset or liability that are not based on observable market data (that is, unobservable inputs).

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The following table presents the assets and liabilities that are measured at fair value at 31 December 2017.

	Level 1		Level 2		Level 3		Total
Assets
Financial assets at fair value through profit or loss
– Trading derivatives (Note 14)		-		2,726		-		2,726
–Contingent consideration (Note 40)		-		-		859,547		859,547
Derivatives used for hedging (Note 14)		-		330,966		-		330,966
Available-for-sale financial assets– Equity securities (Note 10)		9,223		-		-		9,223
Total assets		9,223		333,692		859,547		1,202,462
Liabilities
Financial liabilities at fair value through profit or loss
– Trading derivatives (Note 14)		-		125		-		125
Derivatives used for hedging (Note 14)		-		210,539		-		210,539
Total liabilities		-		210,664		-		210,664

The following table presents the assets and liabilities that are measured at fair value at 31 December 2016.

	Level 1		Level 2		Level 3		Total
Assets
Financial assets at fair value through profit or loss – Trading derivatives (Note 14)		-		5,881		-		5,881
Derivatives used for hedging (Note 14)		-		372,442		-		372,442
Available-for-sale financial assets – Equity securities (Note 10)		1,820,713		-		-		1,820,713
Total assets		1,820,713		378,323		-		2,199,036
Liabilities
Financial liabilities at fair value through profit or loss
– Trading derivatives (Note 14)		-		619		-		619
Derivatives used for hedging (Note 14)		-		334,119		-		334,119
Total liabilities		-		334,738		-		334,738

The fair value of financial instruments traded in active markets is based on quoted market prices at the end of reporting period. A market is regarded as active if quoted prices are readily and regularly available from an exchange, dealer, broker, industry group, pricing service, or regulatory agency, and those prices represent actual and regularly occurring market transactions on an arm's length basis. The quoted market price used for financial assets held by the Company and its subsidiaries is the current bid price. These instruments are included in level 1. As at 31 December 2017, instruments included in level 1 are equity instruments in listed securities classified as available for sale.

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The fair value of financial instruments that are not traded in an active market is determined by using valuation techniques. These valuation techniques maximize the use of relevant observable inputs and minimize the use of unobservable inputs. If all significant inputs required to fair value an instrument are observable, the instrument is included in level 2.

If one or more of the significant inputs is not based on observable market data, the instrument is included in level 3.

Specific valuation techniques used to value financial instruments include:

• The forward exchange contracts and fuel oil swaps are both valued using quoted market prices or dealer quotes for similar instruments.

• The fair value of interest rate swaps is calculated as the present value of the estimated future cash flows based on observable yield curves.

• The contingent consideration is valued using discounted cash flow. The valuation model considers the present value of the expected future receivables discounted using a risk-adjusted discounted rate. The expected future contingent considerations are determined by considering the expected performance of acquired entities through 31 December 2019, representing the measurement period for contingent consideration

Instruments included in level 2 comprise forward exchange contracts, fuel oil swaps and interest rate swaps.

During the year ended 31 December 2017, there are no transfers of financial instruments between level 1 and level 2, or transfers into or out of level 3.

The movements during the period in the balance of the Level 3 fair value measurements are as follows:

	2017
Contingent consideration
Beginning of the year		-
Movement:
Gains on fair value changes		859,547
End of the year		859,547
Total gains for the period included in profit or loss for assets held at the end of the reporting period		859,547

(ii) Fair value disclosures

The carrying value less provision for doubtful accounts of accounts receivable, other receivables and assets, accounts payable and other liabilities, short-term bonds and short-term loans approximated their fair values. The fair value of financial liabilities for disclosure purposes is estimated by discounting the future contractual cash flows at the current market interest rate that is available to the Company and its subsidiaries for similar financial instruments.

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The estimated fair value of long-term loans and long-term bonds (both including current maturities) was approximately RMB125.00 billion and RMB19.81billion as at 31 December 2017 (2016: RMB74.48 billion and RMB15.71 billion), respectively. The aggregate book value of these liabilities was approximately RMB125.13 billion and RMB19.99 billion as at 31 December 2017 (2016: RMB74.55 billion and RMB15.48 billion), respectively.

(c) Capital risk management

The objectives of the Company and its subsidiaries when managing capital are to safeguard the ability of the Company and its subsidiaries in continuing as a going concern in order to provide returns for shareholders and benefits for other stakeholders and to maintain an optimal capital structure to reduce the cost of capital.

The Company and its subsidiaries monitor capital by using debt ratio analysis. This ratio is calculated as total liabilities (sum of current liabilities and non-current liabilities) divided by total assets as shown in the consolidated statement of financial position. During 2017, the strategy of the Company and its subsidiaries remained unchanged from 2016. The debt ratio of the Company and its subsidiaries as at 31 December 2017 was 72.86% (2016: 67.54%).

4 Critical accounting estimates and judgments

Estimates and judgments are continually evaluated and are based on historical experience and other factors, including expectations of future events that are believed to be reasonable under the circumstances.

The Company and its subsidiaries make estimates and assumptions concerning the future. The resulting accounting estimates will, by definition, seldom equal the related actual results. The estimates and assumptions that have a significant risk of causing a material adjustment to the carrying amounts of assets and liabilities within the next financial year are discussed below.

(a) Accounting estimates on impairment of goodwill and power generation license

The Company and its subsidiaries perform test annually whether goodwill and power generation license have suffered any impairment in accordance with the accounting policies stated in Note 2(j). The recoverable amounts of CGU or CGUs to which goodwill and the power generation license have been allocated are determined based on value-in-use calculations. These calculations require the use of estimates (Note 12 and 15). It is reasonably possible, based on existing knowledge, that outcomes within the next financial period that are different from assumptions could require a material adjustment to the carrying amounts of goodwill and power generation license..

For goodwill allocated to CGUs in the PRC, changes of assumptions in tariff and fuel price could have affected the results of goodwill impairment assessment. As at 31 December 2017, if tariff had decreased by 1% or 5% from management's estimates with other variables constant with the expectations, the Company and its subsidiaries would have to recognize impairment against goodwill by approximately RMB681 million and RMB3,879 million, respectively. If fuel price had increased by 1% or 5% from the management's estimates with other variables constant with the expectations, the Company and its subsidiaries would have to recognize impairment against goodwill by RMB320 million and RMB2,535 million, respectively.

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For the sensitivity analysis of power generation license and goodwill of Tuas Power, please refer to Note 12 and 15.

(b) Useful life of power generation license

As at year end, management of the Company and its subsidiaries assess whether the estimated useful life for its power generation license is indefinite. This assessment is based on the expected renewal of power generation license without significant restriction and cost, together with the consideration on related future cash flows generated and the expectation of continuous operations. Based on existing knowledge, outcomes within the next financial period that are different from assumptions could require a change to the carrying amount of power generation license.

(c) Useful lives of property, plant and equipment

Management of the Company and its subsidiaries determines the estimated useful lives of property, plant and equipment and respective depreciation. The accounting estimate is based on the expected wears and tears incurred during power generation. Wears and tears can be significantly different following renovation each time. When the useful lives differ from the original estimated useful lives, management will adjust the estimated useful lives accordingly. It is possible that the estimates made based on existing experience are different to the actual outcomes within the next financial period and could cause a material adjustment to the depreciation and carrying amount of property, plant and equipment.

(d) Estimated impairment of other non-current assets

The Company and its subsidiaries test whether property, plant and equipment, land use rights and mining rights suffered from impairment whenever an impairment indication exists. In accordance with Note 2(j), an impairment loss is recognized for the amount by which the carrying amount of the asset exceeds its recoverable amount. It is reasonably possible, based on existing knowledge, that outcomes within the next financial period that are different from assumptions could require a material adjustment to the carrying amount of property, plant and equipment, land use rights and mining rights.

Changes of assumptions in tariff and fuel price will affect the result of property, plant and equipment, land use rights and mining rights impairment assessment. For power plants assets that are subject to impairment testing, as at 31 December 2017, if tariff had decreased by 1% or 5% from management's estimates with other variables constant with the expectations, the Company and its subsidiaries would have to further recognize impairment against property, plant and equipment and land use rights by approximately RMB165 million and RMB1,165 million, respectively. If fuel price had increased by 1% or 5% from the management's estimates with other variables constant with the expectations, the impairment against property, plant and equipment, land use rights and mining rights of the Company and its subsidiaries would increase totaling by approximately RMB45 million and RMB478 million, respectively.

(e) Approval of construction of new power plants

The receiving of the ultimate approvals from National Development and Reform Commission ("NDRC") on certain power plant construction projects of the Company and its subsidiaries is a critical estimate and judgment of the directors. Such estimates and judgments are based on initial approval documents received as well as their understanding of the projects. Based on historical experience, the directors believe that the Company and its subsidiaries will receive final approvals from NDRC on the related

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power plant projects. Deviation from the estimate and judgment could result in significant adjustment to the carrying amount of non-current assets.

(f) Deferred tax assets

The Company and its subsidiaries recognized the deferred tax assets to the extent that it is probable that future taxable profit will be available against which the asset can be utilized, using tax rates that are expected to be applied in the period when the asset is recovered. The management assesses the deferred tax assets based on the expected amount and timing of future taxable profit, the enacted tax laws and applicable tax rates. It is reasonably possible, based on existing knowledge, the outcomes within the next financial period that are different from assumptions could require a material adjustment to the carrying amount of deferred tax assets.

(g) Business combination

For the business combinations undertaken by the Company, the Company recognises the assets acquired and the liabilities assumed based on their estimated fair value on the date of acquisition. Any excess of purchase consideration over the estimated fair values of acquired identifiable net assets is recorded goodwill (Note 2(i)). The contingent consideration of the Company in the business combination is recognised as a financial asset at fair value through profit or loss (included in other non-current assets and other receivables and assets).

The Company makes judgements and estimates in relation to the fair value of the assets acquired and the liabilities assumed and the contingent consideration from business combination. The fair value of acquired assets and assumed liabilities and the contingent consideration are determined using valuation techniques. Estimating the fair value assigned to each class of acquired assets and assumed liabilities and the contingent consideration are based on expectations and assumptions, in particular in relation to the future sales volumes and the related revenue growth rate, future on-grid tariffs, future capital expenditure, future fuel prices, future other operating costs and the discount rates applied.

A change in the amount allocated to identifiable net assets would have an offsetting effect on the amount of goodwill recognised from the acquisition and would change the amount of depreciation and amortisation expense recognised related to those identifiable net assets. And outcomes within the next financial period that are different from assumptions could require a material adjustment to the carrying amounts of contingent consideration.

5 Revenue and segment information

Revenues recognized during the year are as follows:

	For the year ended 31 December
	2017		2016		2015
Sales of power and heat		148,925,442		112,794,536		127,849,408
Sales of coal		1,143,299		2,909		6,839
Port service		232,360		237,347		211,685
Transportation service		73,830		105,505		104,721
Others		2,084,513		673,939		732,220
Total		152,459,444		113,814,236		128,904,873

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Directors and certain senior management of the Company perform the function as the chief operating decision maker (collectively referred to as the "senior management"). The senior management reviews the internal reporting of the Company and its subsidiaries in order to assess performance and allocate resources. The Company has determined the operating segments based on these reports. The reportable segments of the Company are the PRC power segment, Singapore segment and all other segments (mainly including port and transportation operations). No operating segments have been aggregated to form a reportable segment.

Senior management assesses the performance of the operating segments based on a measure of profit before income tax expense under China Accounting Standard for Business Enterprises ("PRC GAAP") excluding dividend income received from available-for-sale financial assets, gains on disposal of available-for-sale financial assets and operating results of the centrally managed and resource allocation functions of headquarters ("Segment results"). Other information provided, except as noted below, to the senior management of the Company is measured under PRC GAAP.

Segment assets exclude prepaid income tax, deferred income tax assets, available-for-sale financial assets and assets related to the centrally managed and resource allocation functions of headquarters that are not attributable to any operating segment ("corporate assets"). Segment liabilities exclude current income tax liabilities, deferred income tax liabilities and liabilities related to the centrally managed and resource allocation functions of headquarters that are not attributable to any operating segment ("corporate liabilities"). These are part of the reconciliation to total assets and liabilities of consolidated statement of financial position.

All sales among the operating segments have been eliminated as internal transactions when preparing consolidated financial statements.

	(Under PRC GAAP)
	PRC powersegment			Singaporesegment			All othersegments			Total
For the year ended 31 December 2017
Total revenue		142,067,629			10,078,031			694,405			152,840,065
Inter-segment revenue		-			-			(380,621	)		(380,621	)
Revenue from external customers		142,067,629			10,078,031			313,784			152,459,444
Segment results		2,417,073			(577,458	)		302,191			2,141,806
Interest income		126,927			70,756			1,223			198,906
Interest expense		(9,026,064	)		(450,928	)		(145,112	)		(9,622,104	)
Impairment loss		(1,167,751	)		(994	)		(19,742	)		(1,188,487	)
Depreciation and amortization		(18,081,299	)		(856,979	)		(189,764	)		(19,128,042	)
Net loss on disposal of non-current assets		(580,345	)		(995	)		(3	)		(581,343	)
Share of profits less losses of associates and joint ventures		(7,318	)		-			307,923			300,605
Income tax expense		(1,667,234	)		99,150			(5,386	)		(1,573,470	)

41

							(Under PRC GAAP)
	PRC power segment			Singaporesegment			All other segments			Total
For the year ended 31 December 2016 (Restated*)
Total revenue		129,101,375			8,758,822			634,965			138,495,162
Inter-segment revenue		-			-			(344,866	)		(344,866	)
Revenue from external customers		129,101,375			8,758,822			290,099			138,150,296
Segment results		17,633,734			(282,703	)		(38,433	)		17,312,598
Interest income		102,265			69,672			623			172,560
Interest expense		(7,952,640	)		(481,263	)		(137,825	)		(8,571,728	)
Impairment (loss)/reversal		(1,410,733	)		899			(8,475	)		(1,418,309	)
Depreciation and amortization		(17,320,753	)		(778,426	)		(203,493	)		(18,302,672	)
Net loss on disposal of non-current assets		(693,091	)		(172	)		(14,303	)		(707,566	)
Share of profits less losses of associates and joint ventures		973,982			-			73,415			1,047,397
Income tax expense		(4,610,591	)		44,135			57,489			(4,508,967	)
For the year ended 31 December 2015 (Restated*)
Total revenue		143,679,910			10,143,793			588,266			154,411,969
Inter-segment revenue		-			-			(266,701	)		(266,701	)
Revenue from external customers		143,679,910			10,143,793			321,565			154,145,268
Segment results		27,473,279			(313,253	)		(232,956	)		26,927,070
Interest income		115,378			66,898			501			182,777
Interest expense		(9,526,290	)		(452,034	)		(163,325	)		(10,141,649	)
Impairment (loss)/reversal		(3,112,370	)		1,744			(178,131	)		(3,288,757	)
Depreciation and amortization		(16,719,037	)		(772,003	)		(245,936	)		(17,736,976	)
Net (loss)/gain on disposal of non-current assets		(517,820	)		22,450			(1	)		(495,371	)
Share of profits less losses of associates and joint ventures		1,247,293			-			18,247			1,265,540
Income tax expense		(7,121,207	)		254,772			14,397			(6,852,038	)

				(Under PRC GAAP)
	PRC power segment			Singaporesegment			All other segments			Total
31 December 2017
Segment assets		334,379,104			27,817,680			9,978,885			372,175,669
Including:
Additions to non-current assets (excluding financial assets and deferred income tax assets)		24,447,658			260,240			328,061			25,035,959
Investments in associates		12,577,836			-			2,919,860			15,497,696
Investments in joint ventures		1,457,247			-			1,025,534			2,482,781
Segment liabilities		(264,115,887	)		(14,000,442	)		(3,026,229	)		(281,142,558	)
31 December 2016 (Restated*)
Segment assets		331,939,958			28,141,718			11,789,504			371,871,180
Including:
Additions to non-current assets (excluding financial assets and deferred income tax assets)		27,430,205			230,974			854,484			28,515,663
Investments in associates		12,527,711			-			2,880,368			15,408,079
Investments in joint ventures		2,202,002			-			790,610			2,992,612
Segment liabilities		(246,200,555	)		(14,027,606	)		(5,620,515	)		(265,848,676	)

42

A reconciliation of revenue from external customers to operating revenue is provided as follows:

	For the year ended 31 December
	2017		2016(Restated*)			2015(Restated*)
Revenue from external customers
(PRC GAAP)		152,459,444		138,150,296			154,145,268
Reconciling item:
Impact of restatement under PRC GAAP in relation to business combination under common control*(Note 40)		-		(24,336,060	)		(25,240,395	)
Operating revenue per IFRS consolidated statement of comprehensive income		152,459,444		113,814,236			128,904,873

A reconciliation of segment result to profit before income tax expense is provided as follows:

	For the year ended 31 December
	2017			2016(Restated*)			2015(Restated*)
Segment results (PRC GAAP)		2,141,806			17,312,598			26,927,070
Reconciling items:
Loss related to the headquarter		(170,210	)		(699,054	)		(327,262	)
Investment income from China Huaneng Finance Co., Ltd. ("Huaneng Finance")		143,794			132,018			135,971
Dividend income of available-for-sale financial assets		124,918			105,337			99,071
Gains on disposal of available-for-sale financial asset		1,479,732			932,738			4,282
Impact of restatement under PRC GAAP in relation to business combination under common control*(Note 40)		-			(3,417,300	)		(3,454,005	)
Impact of other IFRS adjustments**		(918,307	)		(553,199	)		(427,077	)
Profit before income tax expense per IFRS consolidated statement of comprehensive income		2,801,733			13,813,138			22,958,050

Reportable segments' assets are reconciled to total assets as follows:

	As at 31 December
	2017		2016(Restated*)
Total segment assets (PRC GAAP)		372,175,669		371,871,180
Reconciling items:
Investment in Huaneng Finance		1,336,777		1,314,603
Deferred income tax assets		2,980,303		2,447,648
Prepaid income tax		150,838		204,182
Available-for-sale financial assets		1,654,993		3,560,928
Corporate assets		395,148		360,854
Impact of restatement under PRC GAAPin relation to business combinationunder common control * (Note 40)		-		(70,341,769	)
Impact of other IFRS adjustments**		17,895,783		5,422,113
Total assets per IFRS consolidated statement offinancial position		396,589,511		314,839,739

43

Reportable segments' liabilities are reconciled to total liabilities as follows:

	As at 31 December
	2017			2016(Restated*)
Total segment liabilities (PRC GAAP)		(281,142,558	)		(265,848,676	)
Reconciling items:
Current income tax liabilities		(430,703	)		(572,515	)
Deferred income tax liabilities		(1,283,950	)		(1,429,859	)
Corporate liabilities		(3,632,847	)		(4,717,617	)
Impact of restatement under PRC GAAPin relation to business combinationunder common control * (Note 40)		-			59,917,072
Impact of other IFRS adjustments**		(2,484,849	)		(1,407	)
Total liabilities per IFRS consolidated statement of financial position		(288,974,907	)		(212,653,002	)

Other material items:

	Reportable segment total			Headquarters			Investment income from Huaneng Finance		Impact of restatement under PRC GAAP in relation to business combination under common control			Impact of other IFRS adjustments**			Total
For the year ended 31 December 2017
Total revenue		152,459,444			-			-		-			-			152,459,444
Interest expense		(9,622,104	)		(126,900	)		-		-			-			(9,749,004	)
Depreciation and amortization		(19,128,042	)		(38,819	)		-		-			(1,468,972	)		(20,635,833	)
Impairment loss		(1,188,487	)		-			-		-			1,275			(1,187,212	)
Share of profits less losses of associates and joint ventures		300,605			-			143,794		-			(19,184	)		425,215
Net (loss)/gain on disposal of non-current assets		(581,343	)		3,174			-		-			(38,287	)		(616,456	)
Income tax expense		(1,573,470	)		-			-		-			355,944			(1,217,526	)
For the year ended 31 December 2016 (Restated*)
Total revenue		138,150,296			-			-		(24,336,060	)		-			113,814,236
Interest expense		(8,571,728	)		(131,244	)		-		1,885,446			-			(6,817,526	)
Depreciation and amortization		(18,302,672	)		(48,934	)		-		3,533,820			(344,929	)		(15,162,715	)
Impairment loss		(1,418,309	)		-			-		213,351			-			(1,204,958	)
Share of profits less losses of associates and joint ventures		1,047,397			-			132,018		133,694			(14,220	)		1,298,889
Net loss on disposal of non-current assets		(707,566	)		(14	)		-		115,769			1,762			(590,049	)
Income tax expense		(4,508,967	)		-			-		928,854			114,962			(3,465,151	)
For the year ended 31 December 2015 (Restated*)
Total Revenue		154,145,268			-			-		(25,240,395	)		-			128,904,873
Interest expense		(10,141,649	)		(149,259	)		-		2,345,174			-			(7,945,734	)
Depreciation and amortization		(17,736,976	)		(60,236	)		-		3,474,072			(394,473	)		(14,717,613	)
Impairment loss		(3,288,757	)		-			-		198,604			-			(3,090,153	)
Share of profits less losses of associates and joint ventures		1,265,540			-			135,971		180,447			(55,983	)		1,525,975
Net loss on disposal of non-current assets		(495,371	)		(6	)		-		90,534			(33,478	)		(438,321	)
Income tax expense		(6,852,038	)		-			-		1,016,588			136,507			(5,698,943	)

* The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

44

** Other GAAP adjustments above primarily represented the classification adjustments and other adjustments. Other than the classification adjustments, the differences will be gradually eliminated following subsequent depreciation and amortization of related assets or the extinguishment of liabilities.

Geographical information (Under IFRS):

(i) External revenue generated from the following countries:

	For the year ended 31 December
	2017		2016		2015
PRC		142,381,413		105,055,414		118,761,080
Singapore		10,078,031		8,758,822		10,143,793
Total		152,459,444		113,814,236		128,904,873

The geographical location of customers is based on the location at which the electricity was transferred, goods were delivered and services provided.

(ii) Non-current assets (excluding financial assets and deferred income tax assets) are located in the following countries:

	As at 31 December
	2017		2016
PRC		319,534,533		249,155,921
Singapore		23,035,758		23,369,766
Total		342,570,291		272,525,687

The information on sales to major customers of the Company and its subsidiaries at amount equal to or more than 10% of external revenue is as follows:

In 2017, the revenue from grid companies under common control of State Grid Corporation of China within PRC power segment in total accounted for 76% of external revenue (2016: 74%, 2015: 81%). The sales from a subsidiary of State Grid Corporation of China at amount more than 10% of external revenue is as follows:

	For the year ended 31 December
	2017					2016					2015
	Amount		Proportion			Amount		Proportion			Amount		Proportion
State Grid Shandong Electric Power Company		28,659,891		19	%		12,649,224		11	%		14,855,655		12	%

45

6 Profit before income tax expense

Profit before income tax expense was determined after charging/(crediting) the following:

	For the year ended 31 December
	2017			2016			2015
Total interest expense on borrowing		10,225,069			7,267,490			8,716,074
Less: amounts capitalized in property, plant and equipment		476,065			449,964			770,340
Interest expenses charged in consolidated statement of comprehensive income		9,749,004			6,817,526			7,945,734
Auditors' remuneration-audit services		64,160			43,610			41,640
Operating leases charge		364,756			331,496			313,723
Fuel		92,737,304			56,617,542			59,242,367
Depreciation of property, plant and equipment		20,180,830			14,815,620			14,411,632
Amortization of land use rights		341,125			225,707			213,206
Amortization of other non-current assets		113,878			121,388			92,775
Impairment loss of property, plant and equipment (Note 7)		1,046,195			1,063,735			1,047,641
Impairment loss of land use rights (Note 11)		108,590			51,981			-
Impairment loss of investment in an associate		-			-			178,131
Impairment loss of mining rights		-			-			760,296
Impairment loss of goodwill		-			-			1,105,649
Impairment loss of other non-current assets		5,008			-			-
Recognition/(reversal) of provision for
doubtful accounts		27,682			89,498			(3,392	)
(Reversal)/recognition of provision for inventory obsolescence		(263	)		(256	)		1,828
Net loss on disposals of non-current assets		616,456			590,049			438,321
Government grants		(421,912	)		(396,467	)		(696,735	)
Gain on a bargain purchase		-			(129,921	)		-
Included in other investment income
-Gains on disposal of available-for-sale financial asset (Note 10)		(1,479,732	)		(932,738	)		-
-Dividends on available-for-sale financial assets		(124,918	)		(103,037	)		(97,696	)
-Gains on disposal of subsidiaries*		(52,330	)		-			-
Included in (gain)/loss on fair value changes of financial assets/liabilities
-Contingent consideration of the business combination (Note 40)		(859,547	)		-			-
-Loss on fair value changes of trading derivatives		2,761			12,986			16,762

46

* For the disposals of Taishan Power Limited Company and Huaneng (Fujian) Harbour Limited Company with no interest being retained. The Company received consideration of RMB781 million and RMB222 Million respectively. The investment income of 52 million was recognized and the related non-controlling interests of RMB681 million and RMB186 million with the subsidiaries were derecognized.

Other operating expenses consist of impairment loss of property, plant and equipment, land use rights and other non-current assets, environmental protection expenses, substituted power arrangement expenses, insurance, gain on a bargain purchase, government grants and other miscellaneous expenses.

7 Property, plant and equipment

	Dam			Port facilities			Buildings			Electric utility plant in service			Transport-ation facilities			Others			CIP			Total
As at 1 January 2016
Cost		1,856,144			3,860,009			8,306,471			327,827,738			980,290			5,809,400			23,851,697			372,491,749
Accumulated depreciation		(153,325	)		(436,215	)		(2,508,772	)		(138,852,591	)		(371,226	)		(3,366,838	)		-			(145,688,967	)
Accumulated impairment loss		(268,981	)		-			(68,931	)		(5,968,962	)		-			(81,328	)		(741,510	)		(7,129,712	)
Net book value		1,433,838			3,423,794			5,728,768			183,006,185			609,064			2,361,234			23,110,187			219,673,070
Year ended 31 December 2016
Beginning of the year		1,433,838			3,423,794			5,728,768			183,006,185			609,064			2,361,234			23,110,187			219,673,070
Reclassification		-			1,771			(492,558	)		495,841			759			(5,813	)		-			-
Business combination		-			-			8,098			303,854			-			2,977			4,576			319,505
Additions		-			1,770			127			418,812			-			122,519			18,839,102			19,382,330
Transfer from CIP		20,170			246,712			1,319,019			12,576,736			20,033			296,648			(14,479,318	)		-
Disposals/write-off		-			-			(68,945	)		(495,251	)		(26,477	)		(27,055	)		(193,357	)		(811,085	)
Depreciation charge		(32,987	)		(113,810	)		(255,882	)		(14,004,881	)		(48,720	)		(387,884	)		-			(14,844,164	)
Impairment charge		(41,423	)		-			(2,303	)		(1,005,367	)		-			(6,399	)		(8,243	)		(1,063,735	)
Currency translation differences		-			-			-			404,948			-			782			158			405,888
End of the year		1,379,598			3,560,237			6,236,324			181,700,877			554,659			2,357,009			27,273,105			223,061,809
As at 31 December 2016
Cost		1,876,314			4,116,914			9,056,858			341,195,395			875,630			6,041,783			28,022,858			391,185,752
Accumulated depreciation		(186,312	)		(556,677	)		(2,749,300	)		(152,408,524	)		(320,971	)		(3,596,546	)		-			(159,818,330	)
Accumulated impairment loss		(310,404	)		-			(71,234	)		(7,085,994	)		-			(88,228	)		(749,753	)		(8,305,613	)
Net book value		1,379,598			3,560,237			6,236,324			181,700,877			554,659			2,357,009			27,273,105			223,061,809
Year ended 31 December 2017
Beginning of the year		1,379,598			3,560,237			6,236,324			181,700,877			554,659			2,357,009			27,273,105			223,061,809
Reclassification		49,386			(404	)		52,047			(157,759	)		(4,357	)		61,087			-			-
Business combination (Note 40)		279,169			-			1,944,531			58,379,270			17,243			443,052			2,717,544			63,780,809
Additions		-			-			184			840,991			-			88,160			21,225,980			22,155,315
Transfer from CIP		15,355			114,688			342,285			20,283,508			288,554			145,705			(21,190,095	)		-
Disposals/write-off		-			(14,731	)		(30,837	)		(1,252,829	)		(3,907	)		(28,562	)		-			(1,330,866	)
Disposal of subsidiaries		-			(632,709	)		(101,169	)		(114,542	)		-			(153,096	)		(1,242,210	)		(2,243,726	)
Depreciation charge		(40,200	)		(111,529	)		(339,630	)		(19,155,852	)		(59,022	)		(494,932	)		-			(20,201,165	)
Impairment charge		(45,619	)		-			(1,651	)		(754,753	)		-			(2,503	)		(241,669	)		(1,046,195	)
Currency translation differences		-			-			-			151,249			-			263			600			152,112
End of the year		1,637,689			2,915,552			8,102,084			239,920,160			793,170			2,416,183			28,543,255			284,328,093
As at 31 December 2017
Cost		2,220,224			3,358,811			11,173,669			418,360,698			1,155,392			5,972,688			29,534,677			471,776,159
Accumulated depreciation		(226,512	)		(443,259	)		(3,019,198	)		(170,525,898	)		(362,222	)		(3,523,292	)		-			(178,100,381	)
Accumulated impairment loss		(356,023	)		-			(52,387	)		(7,914,640	)		-			(33,213	)		(991,422	)		(9,347,685	)
Net book value		1,637,689			2,915,552			8,102,084			239,920,160			793,170			2,416,183			28,543,255			284,328,093

Interest capitalization

Interest expense of approximately RMB476 million (2016: RMB450 million) arising on borrowings for the construction of property, plant and equipment was capitalized during the year and was included in 'Additions' in property, plant and equipment. The weighted average capitalization rate was approximately 4.54% (2016: 4.52%) per annum.

47

Impairment

In 2017, impairment losses for certain property, plant and equipment and land use rights of approximately RMB1,046 million and RMB109 million have been recognized, respectively. Factors leading to the impairment include lower than expected utilization hours of a subsidiary due to long idle hours of its power generating units and the coal-fire projects in progress was aborted; lower than expected operating results of three subsidiaries in 2017 due to oversupply and fierce competition within the electricity market in the provinces, as well as low profitability of a hydropower plant, a coal-fire project in progress of a subsidiary was aborted as a result of relevant regulation. Discount rates of 9.50%, 9.98%, 9.89%, 14.74% and 9.14% were adopted in the value in use model in the determination of the recoverable amounts for the four coal-fired power plants and the hydropower plant respectively. In addition, as a result of the low demand of coal-fired power in local market, management estimated the possibility of further development of a coal-fired power project was remote, therefore the project under construction with a carrying value of RMB242 million was fully impaired in 2017.

In 2016, impairment losses for certain property, plant and equipment and land use rights of approximately RMB1,064 million and RMB52 million have been recognized, respectively. Factors leading to the impairment of operating projects primarily included lower utilization hours and tariff of two coal-fired power plants as a result of over supply of electricity in two provinces, as well as low utilization hours of a hydropower plant as a result of low level of water inflow. Discount rates of 8.06%, 8.97% and 8.12% were adopted in the value in use model in the determination of the recoverable amounts for the two coal-fired power plants and the hydropower plant respectively.

Property, plant and equipment held under finance leases

As at 31 December 2017, certain property, plant and equipment with original cost of RMB3,312 million (2016: RMB2,075 million) were held under finance leases, which mainly included power generation assets, ships and pipeline assets.

Security

As at 31 December 2017, certain property, plant and equipment were secured to a bank as collateral against a long-term loan (Note 24).

Buildings without ownership certificate

At 31 December 2017, the Company and its subsidiaries were in the process of applying for the ownership certificate for certain buildings (buildings for power generation process were included in electric utility plant in service) with an aggregate net book value of RMB10,800 million (2016: RMB7,871 million). The management are of the opinion that the Company and its subsidiaries are entitled to lawfully and validly occupy and use of the above mentioned buildings.

48

8 Investments in associates and joint ventures

	2017			2016
Beginning of the year		19,632,113			19,745,192
Capital injections in associates and joint ventures		301,916			276,118
Business combination (Note 40(a))		1,021,566			-
Transfer from available-for-sale		91,800			-
Transfer to subsidiaries		(736,725	)		-
Share of net profit less loss		425,215			1,298,889
Share of other comprehensive income/(loss)		121,208			(180,572	)
Currency translation differences		(142,226	)		-
Dividends		(835,279	)		(1,507,514	)
Elimination of unrealized profits on transactions with equity-method investees		(361,965	)		-
End of the year		19,517,623			19,632,113

As at 31 December 2017, investments in associates and joint ventures of the Company and its subsidiaries are unlisted except for Shenzhen Energy Corporation Limited ("SECL") which is listed on the Shenzhen Stock Exchange. The following list contains only the particulars of material associates and joint ventures:

Name	Country of incorporation	Registered capital	Business nature and scope of operation	Percentage of equity interest held
				Direct	Indirect1
Associates:
SECL*	PRC	RMB2,642,994,398	Energy and investment in related industries	25.02%	-
Hebei Hanfeng Power Generation Limited Liability Company ("Hanfeng Power")	PRC	RMB1,975,000,000	Power generation	40%	-
Huaneng Finance	PRC	RMB5,000,000,000	Provision for financial service including fund deposit services, lending, finance lease arrangements, notes discounting and entrusted loans and investment arrangement within Huaneng Group	20%	-
Huaneng Sichuan Hydropower Co., Ltd. ("Sichuan Hydropower")	PRC	RMB1,469,800,000	Development, investment, construction, operation and management of hydropower	49%	-
China Huaneng Group Fuel Co., Ltd. ("Huaneng Group Fuel Company") **	PRC	RMB3,000,000,000	Wholesale of coal, import and export of coal	50%	-
Hainan Nuclear Power Limited Liability Company("Hainan Nuclear")	PRC	RMB4,831,460,000	Construction and operation of nuclear power plants; production and sales of electricity and related products	30%	-
Joint ventures:
Shanghai Time Shipping Co., Ltd. ("Shanghai Time Shipping")	PRC	RMB1,200,000,000	International and domestic sea transportation	50%	-
Jiangsu Nantong Power Generation Co., Ltd.("Jiangsu Nantong Power")	PRC	RMB1,596,000,000	Operation and Management of power generation plants and transportation related projects	-	35%
Huaneng Shandong Ruyi (Hongkong) Energy Co., Ltd ("Ruyi (Hongkong) Energy")***	Hong Kong	10,000 Shares	Investment in electricity and other related energy projects	-	40%
Shandong Luyi Power International Limited Company ("Luyi Power")***	PRC	RMB35,000,000	Contracting overseas projects and international bidding projects, mechanical and electrical equipment installation engineering and electric power engineering	-	40%

49

¹ The indirect percentage of equity interest held represents the effective ownership interest of the Company and its subsidiaries.

* As at 31 December 2017, the fair value of the Company's shares in SECL was RMB6,010 million (2016: RMB6,813 million).

** In accordance with the articles of the association of the investee, the Company could only exercise significant influence on the investee and therefore accounts for the investment under the equity method.

*** Ruyi (Hongkong) Energy and Luyi Power were established for Pakistan Sahiwal Project, which are jointly controlled by Huaneng Shandong Power Generation Co., Ltd. and Shandong Ruyi Technology Group Co., Ltd.

All the above associates and joint ventures are accounted for under the equity method in the consolidated financial statements.

50

Summarized financial information of the material associates, adjusted for any differences in accounting policies and acquisition adjustments, and reconciliation to the carrying amounts in the consolidated financial statements, are disclosed below:

	Sichuan Hydropower						SECL						Huaneng Finance						Hanfeng Power						Huaneng GroupFuel Company						Hainan Nuclear
	2017			2016			2017			2016			2017			2016			2017			2016			2017			2016			2017			2016
Gross amounts of the associates'
Current assets		1,113,579			1,245,157			16,444,934			14,021,440			25,535,504			13,919,342			650,055			806,432			4,327,146			4,642,797			2,497,765			2,608,909
Non-current assets		14,590,921			14,676,021			56,079,321			46,584,060			20,786,497			18,055,386			2,246,412			2,616,639			4,102,426			4,269,520			22,490,989			23,939,921
Current liabilities		(2,477,362	)		(2,410,462	)		(20,447,190	)		(16,564,310	)		(39,588,213	)		(25,344,346	)		(795,815	)		(1,045,876	)		(1,778,075	)		(1,939,210	)		(3,409,360	)		(3,330,581	)
Non-current liabilities		(8,661,852	)		(8,901,599	)		(28,491,540	)		(19,395,060	)		(49,904	)		(57,368	)		(27,443	)		(37,103	)		(3,119,462	)		(3,432,326	)		(17,252,794	)		(18,356,288	)
Equity		4,565,286			4,609,117			23,585,525			24,646,130			6,683,884			6,573,014			2,073,209			2,340,092			3,532,035			3,540,781			4,326,600			4,861,961
-Equity attributable to shareholders		3,400,953			3,449,824			22,285,077			21,610,140			6,683,884			6,573,014			2,073,209			2,340,092			3,400,344			3,378,952			4,326,600			4,861,961
-Non-controlling interests		1,164,333			1,159,293			1,300,448			3,035,990			-			-			-			-			131,691			161,829			-			-
Revenue		2,247,781			2,053,327			13,908,949			11,427,830			1,393,211			1,093,637			2,073,209			2,192,445			17,166,036			14,356,915			2,504,379			1,897,190
Profit/(loss) from continuing operations attributable to shareholders		222,403			173,220			747,657			1,362,028			718,970			660,089			52,361			290,470			48,876			102,363			(535,361	)		18,618
Other comprehensive (loss)/income attributable to shareholders		-			-			521,965			(638,680	)		(28,099	)		(125,840	)		-			-			(6,654	)		8,723			-			-
Total comprehensive income/(loss) attributable to shareholders		222,403			173,220			1,269,622			723,348			690,871			534,249			52,361			290,470			42,222			111,086			(535,361	)		18,618
Dividend received from the associates		132,923			145,392			148,761			198,348			116,000			122,000			127,698			174,366			10,000			10,000			-			-
Reconciled to the interests in the associates
Gross amounts of net assets attributable to shareholders of the associate		3,400,953			3,449,824			22,285,077			21,610,140			6,683,884			6,573,014			2,073,209			2,340,092			3,400,344			3,378,952			4,326,600			4,861,961
The Company's effective interest		49	%		49	%		25.02	%		25.02	%		20	%		20	%		40	%		40	%		50	%		50	%		30	%		30	%
The Company's share of net assets attributable to shareholders of the associate		1,666,467			1,690,414			5,574,612			5,405,776			1,336,777			1,314,603			829,284			936,037			1,700,172			1,689,476			1,297,980			1,458,588
Impact of adjustments		207,586			207,586			1,161,810			1,161,810			-			-			293,082			293,082			16,521			16,521			14,076			14,076
Carrying amount in the consolidated financial statements		1,874,053			1,898,000			6,736,422			6,567,586			1,336,777			1,314,603			1,122,366			1,229,119			1,716,693			1,705,997			1,312,056			1,472,664

51

Summarized financial information of material joint ventures adjusted for any differences in accounting policies and acquisition adjustment, and reconciliation to the carrying amount in the consolidated financial statements, are disclosed below:

	Shanghai Time Shipping						Jiangsu Nantong Power						Pakistan Sahiwal Project Related Investment
	2017			2016			2017			2016			2017
Gross amounts of joint ventures'
Current assets		665,410			883,120			656,720			815,359			3,069,065
Non-current assets		4,663,530			5,335,409			5,739,860			6,075,100			9,775,693
Current liabilities		(3,316,709	)		(3,177,881	)		(2,939,371	)		(2,600,258	)		(1,955,211	)
Non-current liabilities		(617,437	)		(1,506,076	)		(1,374,656	)		(1,931,219	)		(8,738,121	)
Equity		1,394,794			1,534,572			2,082,553			2,358,982			2,151,426
Included in the above assets and liabilities:
Cash and cash equivalents		96,528			203,018			362,214			96,501			618,105
Current financial liabilities (excluding trade and other payables and provisions)		(2,987,937	)		(2,681,857	)		(2,404,331	)		(2,270,601	)		(1,482,269	)
Non-current financial liabilities (excluding trade and other payables and provisions)		(617,437	)		(1,506,076	)		(1,352,000	)		(1,931,219	)		(8,738,121	)
Revenue		3,532,065			3,561,091			3,451,983			3,354,545			2,321,510
(Loss)/profit from continuing operations		(139,780	)		1,212			271,364			608,660			(72,227	)
Other comprehensive loss		-			-			-			-			(284,452	)
Total comprehensive (loss)/income		(139,780	)		1,212			271,364			608,660			(356,679	)
Dividend received in cash from the joint ventures		-			275,000			724,453			-			-
Included in the above profit:
Depreciation and amortization		317,133			340,826			396,500			393,221			63,122
Interest income		1,406			985			1,810			2,313			10
Interest expense		157,851			149,748			130,028			128,224			104,467
Income tax expense		(45,741	)		500			92,294			194,915			224,146
Reconciled to the interest in the joint venture:
Gross amounts of net assets		1,394,794			1,534,572			2,082,553			2,358,982			2,151,426
The Company and its subsidiaries' effective interest		50	%		50	%		50	%		50	%		50	%
The Company and its subsidiaries' share of net assets		697,397			767,286			1,041,277			1,179,491			1,075,713
Impact of adjustments		18,324			18,324			-			-			(361,965	)
Carrying amount in the consolidated financial statements		715,721			785,610			1,041,277			1,179,491			713,748

Aggregate information of associates and joint ventures that are not individually material:

	2017		2016
Aggregate carrying amount of individually immaterial associates and joint ventures in the consolidated financial statements		2,948,510		3,479,043
Aggregate amounts of the Company and its subsidiaries' share of those associates and joint ventures Profit from continuing operations		70,965		263,392
Total comprehensive income		70,965		263,392

As at 31 December 2017, the Company's share of losses of an associate and a joint venture exceeded its interest in the associate and the joint venture and the unrecognized further losses amounted to RMB185 million (2016: RMB163 million).

52

9 Investments in subsidiaries

As at 31 December 2017, the investments in subsidiaries of the Company and its subsidiaries, all of which are unlisted, are as follows:

(i) Subsidiaries acquired through establishment or investment

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting
Huaneng International Power Fuel Limited Liability Company	PRC	held directly	RMB 200,000,000	Wholesale of coal	100%	100%
Huaneng Shanghai Shidongkou Power Generation Limited Liability Company ("Shidongkou Power")(i)	PRC	held directly	RMB 1,179,000,000	Power generation	50%	100%
Huaneng Nantong Power Generation Limited Liability Company	PRC	held directly	RMB 798,000,000	Power generation	70%	70%
Huaneng Yingkou Co-generation Limited Liability Company	PRC	held directly	RMB 844,030,000	Production and sales of electricity and heat sale of coal ash and lime	100%	100%
Huaneng Hunan Xiangqi Hydropower Co., Ltd.	PRC	held directly	RMB 328,000,000	Construction, operation and management of hydropower plants and related projects	100%	100%
Huaneng Zuoquan Coal-fired Power Generation Limited Liability Company	PRC	held directly	RMB 960,000,000	Construction, operation and management of electricity projects; Development and utilization of clean energy resources	80%	80%
Huaneng Kangbao Wind Power Utilization Limited Liability Company	PRC	held directly	RMB 407,200,000	Construction, operation and management of wind power plants and related projects; solar power generation	100%	100%
Huaneng Jiuquan Wind Power Generation Co., Ltd.	PRC	held directly	RMB 2,600,000,000	Construction, operation and management of wind power generation and related projects	100%	100%
Huaneng Jiuquan II Wind Power Generation Co., Ltd.	PRC	held directly	RMB 10,000,000	Construction, operation and management of wind power generation and related projects	100%	100%
Huaneng Wafangdian Wind Power Generation Co., Ltd.	PRC	held directly	RMB 50,000,000	Construction, operation and management of wind power generation and related projects	100%	100%
Huaneng Changtu Wind Power Generation Co., Ltd.	PRC	held directly	RMB 50,000,000	Construction, operation and management of wind power generation and related projects	100%	100%
Huaneng Rudong Wind Power Generation Co., Ltd.	PRC	held directly	RMB 90,380,000	Operation, management of wind power generation projects	90%	90%
Huaneng Guangdong Haimen Port Limited Liability Company	PRC	held directly	RMB 331,400,000	Loading, warehousing and conveying services, providing facility services and water transportation services	100%	100%
Huaneng Taicang Port Limited Liability Company	PRC	held directly	RMB 600,000,000	Port provision, cargo loading and storage	85%	85%

53

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng Taicang Power Generation Co., Ltd.	PRC	held directly	RMB 804,146,700	Power generation	75%	75%
Huaneng Huaiyin II Power Generation Limited Company	PRC	held directly	RMB 930,870,000	Power generation	63.64%	63.64%
Huaneng Xindian Power Generation Co., Ltd.	PRC	held directly	RMB 465,600,000	Power generation	95%	95%
Huaneng Shanghai Combined Cycle Power Limited Liability Company	PRC	held directly	RMB 699,700,000	Power generation	70%	70%
Huaneng Yumen Wind Power Generation Co., Ltd.	PRC	held directly	RMB 719,170,000	Construction, operation and management of wind power generation and related projects	100%	100%
Huaneng Qingdao Co-generation Limited Company	PRC	held directly	RMB 214,879,000	Construction, operation and management of co-generation power plants and related projects	100%	100%
Huaneng Tongxiang Combined Cycle Co-generation Co., Ltd.	PRC	held directly	RMB 300,000,000	Production and sales of electricity and heat; investment in combined cycle co-generation industries	95%	95%
Huaneng Eastern Yunnan Energy Mine Construction Co., Ltd.	PRC	held indirectly	RMB 10,000,000	Mine engineering, construction engineering, equipment installation engineering	100%	100%
Huaneng Nanjing Combined Cycle Co-generation Co., Ltd.	PRC	held directly	RMB 582,000,000	Construction, operation and management of power plants and related projects	60%	60%
Huaneng Shantou Haimen Power Generation Limited Liability Company	PRC	held directly	RMB 1,508,000,000	Construction, operation and management of power plants and related projects	80%	80%
Huaneng Chongqing Liangjiang Power Generation Limited Liability Company("Liangjiang Power")	PRC	held directly	RMB 726,600,000	Construction, operation and management of natural gas power plants and related projects	90%	90%
Chongqing Huaqing Energy Co., Ltd. ("Huaqing Energy") (ii)	PRC	held indirectly	RMB 44,420,000	Providing thermal energy and cold energy services; supplying electricity	54%	60%
Huaneng Yunnan Fuyuan Wind Power Generation Co., Ltd.	PRC	held directly	RMB 157,290,000	Wind power project investment, management and sales	100%	100%
Huaneng Guizhou Panxian Wind Power Generation Co., Ltd.	PRC	held directly	RMB 86,500,000	Construction and management of wind power plants and related projects	100%	100%
Huaneng Jiangxi Clean Energy Limited Liability Company	PRC	held directly	RMB 5,000,000	Power generation and supply, development, management and construction of clean energy projects	100%	100%

54

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng Suzhou Combined Cycle Co-generation Co., Ltd. ("Suzhou Combined Cycle Co-generation") (ix)	PRC	held indirectly	RMB 310,000,000	Construction and management of natural gas power plant and related projects	53.45%	100%
Huaneng Hunan Subaoding Wind Power Generation Co., Ltd.	PRC	held directly	RMB 266,000,000	Construction, operation and management of wind power plants and related projects	100%	100%
Huaneng Suixian Jieshan Wind Power Generation Co., Ltd.	PRC	held directly	RMB 96,500,000	Construction, operation and management of wind power plants and related projects	100%	100%
Huaneng Taiyuan Dongshan Combined Cycle Co-generation Co., Ltd.	PRC	held directly	RMB 600,000,000	Construction and operation of thermal heating network, development and utilization of clean energy resources	100%	100%
Huaneng Xuzhou Tongshan Wind Power Generation Co., Ltd.	PRC	held directly	RMB 2,644,560,000	Wind power generation, electricity engineering design services, maintenance of power supply and control facilities, solar energy power generation	70%	70%
Huaneng Nanjing Co-generation Co., Ltd.	PRC	held directly	RMB 300,000,000	Construction and operation of power plants, thermal heating services	70%	70%
Huaneng Hunan Guidong Wind Power Generation Co., Ltd.	PRC	held directly	RMB 140,000,000	Investment, construction, operation and management of electricity projects; development and utilization of clean energy resources	100%	100%
Huaneng Nanjing Luhe Wind Power Generation Co., Ltd.	PRC	held directly	RMB 63,800,000	Investment, construction, operation, management of electricity projects; development and utilization clean energy resources	100%	100%
Huaneng Luoyuan Power Generation Limited Liability Company	PRC	held directly	RMB 1,000,000,000	Construction, operation and management of power plants and related projects	100%	100%
Huaneng Lingang (Tianjin) Gas Co-generation Co., Ltd.	PRC	held directly	RMB 180,000,000	Providing generation and supply	100%	100%
Huaneng Lingang (Tianjin) Heat Co-generation Co., Ltd.	PRC	held indirectly	RMB 5,000,000	Providing thermal energy and cold energy services, supplying steam and hot water (except portable water), plumbing pipe installation and repair, energy engineering construction	66%	66%
Huaneng Anhui Huaining Wind Power Generation Co., Ltd.	PRC	held directly	RMB 122,000,000	Investment, construction and operation of electricity projects, development and utilization of clean energy resources	100%	100%

55

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng Mianchi Co-generation Limited Liability Company	PRC	held directly	RMB 570,000,000	Construction, operation and management of coal-fired plants and related projects	60%	60%
Huaneng Yingkou Xianrendao Co-generation Co., Ltd.	PRC	held directly	RMB 277,690,000	Power generation and supply, development and utilization of clean energy resources	100%	100%
Huaneng Nanjing Xingang Comprehensive Energy Co., Ltd.	PRC	held directly	RMB 10,000,000	Thermal generation and supply, power distribution and sales	65%	65%
Huaneng Changxing Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 16,000,000	Construction and operation of distributed photovoltaic power generation plants and related projects	100%	100%
Huaneng Rudong Baxianjiao Offshore Wind Power Generation Co., Ltd.	PRC	held directly	RMB 610,000,000	Infrastructure construction of wind power plants	70%	70%
Huaneng Guilin Gas Distributed Energy Co., Ltd.	PRC	held directly	RMB 267,450,000	Construction, operation and management of power plants thermal management and related projects	80%	80%
Huaneng (Dalian) Co-generation Co., Ltd.	PRC	held directly	RMB 12,500,000	Construction, operation and management of co-generation power plants and related projects	100%	100%
Huaneng Zhongxiang Wind Power Generation Co., Ltd.	PRC	held directly	RMB 10,000,000	Construction, operation and management of wind power plants and related projects	100%	100%
Huaneng Guanyun Co-generation Co., Ltd.	PRC	held directly	RMB 15,000,000	Construction, operation and management of co-generation power plants, heating network and expansion engineering	100%	100%
Huaneng International Power Hongkong Limited Company	HongKong	held directly	100,000 Shares	Development, construction management and operation of power supply, coal projects; related investment and financing businesses	100%	100%
Tuas Power Generation Pte. Ltd. ("TPG")	Singapore	held indirectly	S$ 1,183,000,001	Power generation and related by-products, derivatives, developing power supply resources, operating electricity and power sales	100%	100%
TP Utilities Pte. Ltd.	Singapore	held indirectly	S$ 255,500,001	Provision of energy, power supply, thermal supply, management of industrial water and waste	100%	100%

56

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

TP-STM Water Resources Pte. Ltd.	Singapore	held indirectly	S$ 4,500,000	Providing desalinated water	60%	60%
Huaneng Shanxi Taihang Power Generation Limited Liability Company	PRC	held directly	RMB 1,086,440,000	Pre-services related to coal-fired generation	60%	60%
Huaneng Mianchi Clean Energy Limited Liability Company	PRC	held directly	RMB 10,000,000	Wind Power generation, new energy development and utilization	100%	100%
Huaneng Zhuolu Clean Energy Limited Liability Company	PRC	held directly	RMB 78,878,100	Construction, operation and management of power plants and related projects	100%	100%
Huaneng Tongwei Wind Power Generation Limited Liability Company	PRC	held directly	RMB 248,000,000	Construction, operation and management of wind power plants and related projects	100%	100%
Huaneng Yizheng Wind Power Generation Limited Liability Company	PRC	held directly	RMB 200,000,000	Wind power plants design, construction, management and maintenance	100%	100%
Huaneng Yancheng Dafeng New Energy Power Generation Limited Liability Company	PRC	held directly	RMB 5,000,000	Construction, operation and management of wind power, photovoltaic power plant	100%	100%
Huaneng Shanyin Power Generation Limited Liability Company	PRC	held directly	RMB 1,573,000,000	Construction, operation and management of power plants and related projects	51%	51%
Huaneng Jiangsu Energy Sales Limited Liability Company	PRC	held directly	RMB 200,000,000	Purchase and sales of electricity and thermal energy, water supply services, construction and operation of electricity distribution network and heating pipe network	100%	100%
Huaneng Liaoning Energy Sales Limited Liability Company	PRC	held directly	RMB 200,000,000	Sales of electricity, thermal energy and circulating hot water	100%	100%
Huaneng Guangdong Energy Sales Limited Liability Company	PRC	held directly	RMB 200,000,000	Power and thermal energy supply, energy conservation technology service, transmission and substation projects contracting	100%	100%
Huaneng Suizhou Power Generation Limited Liability Company	PRC	held directly	RMB 50,000,000	Construction, operation and management of power plants, production and sales of electricity and heating	100%	100%
Huaneng Changle Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 10,000,000	Construction, operation and management of photovoltaic power plants and related projects	100%	100%
Huaneng Longyan Wind Power Generation Limited Liability Company	PRC	held directly	RMB 10,000,000	Construction, operation and management of wind power plants and related projects	100%	100%

57

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng Yunnan Malong Wind Power Generation Limited Liability Company	PRC	held directly	RMB 10,000,000	Construction, operation and management of wind power plants and related projects	100%	100%
Huaneng Dandong Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 17,720,000	Investment, construction operation and management of electricity projects, development and utilization of clean energy resources	100%	100%
Huaneng Dongguan Combined Cycle Co-generation Limited Liability Company	PRC	held directly	RMB 50,000,000	Investment of electricity projects, thermal power generation and supply, investment in heating pipe network, development and utilization of clean energy resources	100%	100%
Huaneng Yangxi Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 62,500,000	Photovoltaic electric power production and sales	80%	80%
Huaneng Chongqing Fengjie Wind Power Generation Limited Liability Company	PRC	held directly	RMB 10,000,000	Electricity production and supply; development and utilization of clean energy resources	100%	100%
Huaneng Changxing Hongqiao Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 10,000,000	Electricity production and supply; development and utilization of clean energy resources	100%	100%
Huaneng Jingxing Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 100,000	Investment, construction and management of photovoltaic power plants	100%	100%
Huaneng Shanxi Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Electricity supply and sales, investment, construction, operation and repair of regional transmission and distribution network	100%	100%
Huaneng Chongqing Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Operation of natural gas, electric energy and thermal energy products sales	100%	100%
Huaneng Chongqing Luohuang Energy Sales Limited Liability Company	PRC	held indirectly	RMB 210,000,000	Sales and supply of electricity, sales of thermal products	90%	90%
Huaneng Chongqing Tongliang Energy Sales Limited Liability Company	PRC	held indirectly	RMB 210,000,000	Operation of natural gas, sales of electricity supply, sales of thermal products	51%	51%
Huaneng Hunan Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Electricity and thermal energy products sales	100%	100%
Huaneng Jiangxi Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Construction, operation and management of heating and power supply facilities	100%	100%

58

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng Hebei Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Construction, installation, maintenance and repair of heating and power supply facilities	100%	100%
Huaneng Henan Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Sales of electricity, heating, gas and other energy products	100%	100%
Huaneng Handan Heating Limited Liability Company	PRC	held directly	RMB 100,000,000	Construction, operation and maintenance of heating sources and pipe network	100%	100%
Huaneng (Huzhou Development Zone) Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 10,000,000	Photovoltaic power generation; power supply, purchase and sales	100%	100%
Huaneng Fujian Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Sales of electricity, heating, gas and other energy products	100%	100%
Huaneng Hubei Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Sales of electricity, heating, gas and other energy products	100%	100%
Huaneng (Sanming) Clean Energy Limited Liability Company	PRC	held directly	RMB 500,000	Construction, operation and management of wind power, photovoltaic power station and related projects	100%	100%
Huaneng Yueyang Xingang Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 16,000,000	Construction, operation and management of electricity projects, development and utilization of clean energy	60%	60%
Huaneng Shanghai Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Power supply (except construction and operation of electricity network), technology services in energy conservation and environmental protection	100%	100%
Huaneng Yushe Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 10,000,000	Production and supply of electric power	100%	100%
Huaneng Anhui Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Sales of electricity, heating gas and other energy products	100%	100%
Huaneng (Shanghai) Power Maintenance Limited Liability Company	PRC	held directly	RMB 200,000,000	Contracting installation and repair of electricity facilities	100%	100%
Huaneng Guanyun Clean Energy Power Limited Liability Company *	PRC	held directly	RMB 26,000,000	Sales of electricity	100%	100%

59

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng Jianchang Photovoltaic Power Generation Limited Liability Company*	PRC	held directly	RMB 10,000,000	Production and supply of electricity, development and utilization of clean energy resources	100%	100%
Huaneng Chaoyang Photovoltaic Power Generation Limited Liability Company*	PRC	held directly	RMB 10,000,000	Production and supply of electricity, development and utilization of clean energy resources	100%	100%
Huaneng (Luoyuan) Port Limited Company (x) *	PRC	held directly	RMB 169,710,000	Port management, investment and development	100%	100%
Huaneng Shijiazhuang Energy Limited Liability Company *	PRC	held directly	RMB 60,000,000	Production and supply of heating, purchase and sales of electricity	66.60%	66.60%
Huaneng Jiangyin Combined Cycle Co-generation Limited Liability Company*	PRC	held directly	RMB 600,000,000	Production and supply of electricity, production and supply of heating	51%	51%
Huaneng Anyang Energy Limited Liability Company *	PRC	held directly	RMB 10,000,000	Production and supply of electricity, production and supply of heating	100%	100%
Huaneng Shanxi Comprehensive Energy Limited Liability Company *	PRC	held directly	RMB 120,000,000	Production and supply of electricity, production and supply of heating	100%	100%
Huaneng Zhanhua Photovoltaic Power Generation Limited Company ("Zhanhua Photovoltaic Company") (vi)*	PRC	held indirectly	RMB 145,790,000	Photovoltaic power generation	46.40%	58%
Huaneng Weishan New Energy Limited Company ("Weishan New Energy") (vi)*	PRC	held indirectly	RMB 167,000,000	Investment, production and sales of new energy power generation projects	40%	100%
Huaneng Ruyi (Helan) New Energy Limited Company ("Helan New Energy") (vi)*	PRC	held indirectly	RMB 19,000,000	Photovoltaic power generation	40%	100%
Huaneng Dezhou New Energy Limited Company (vi)*	PRC	held indirectly	RMB 2,500,000	Photovoltaic power generation, wind power generation, biomass power generation	80%	100%
Zhaodong Huaneng Dechang Solar Power Generation Limited Company*	PRC	held indirectly	RMB 30,810,000	Solar energy generation and technology promotion, repair electricity facilities	100%	100%
Daqing Huaneng Shuangyu Solar Power Generation Limited Company*	PRC	held indirectly	RMB 20,000,000	Solar energy generation	100%	100%
Huaneng Taizhouwan Juji District Photovoltaic Power Generation Limited Liability Company*	PRC	held directly	RMB 100,000	Production and supply of electricity projects	100%	100%

60

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng Mingguang Wind Power Generation Limited Liability Company*	PRC	held directly	RMB 10,000,000	Production and supply of electricity; investment,construction, operation and management of electricity projects	100%	100%
Huaneng Guangxi Energy Sales Limited Liability Company*	PRC	held directly	RMB 210,000,000	Power supply, contracting installation and repair of electricity facilities	100%	100%
Huaneng Ruzhou Clean Energy Limited Liability Company*	PRC	held directly	RMB 80,000,000	Production and supply of electricity projects, investment, construction and operation of electricity projects	95%	95%
Huaneng Hunan Lianping Wind Power Generation Limited Liability Company*	PRC	held directly	RMB 173,920,000	Production and supply of electricity	80%	80%
Huaneng Abagaqi Clean Energy Limited Liability Company*	PRC	held directly	RMB 100,000	Production, supply and sales of electricity and thermal energy	100%	100%
Huaneng Jiashan Photovoltaic Power Generation Limited Liability Company*	PRC	held directly	RMB 10,000,000	Production and supply of electricity	100%	100%
Huaneng Zhejiang Energy Sales Limited Liability Company*	PRC	held directly	RMB 210,000,000	New energy technology development, technology consulting, transferring of results	100%	100%
Huaneng Guangdong Shantou Power Generation Limited Liability Company*	PRC	held directly	RMB 10,000,000	Production and supply of electricity and thermal energy	100%	100%
Huaneng Shantou Photovoltaic Power Generation Limited Liability Company*	PRC	held directly	RMB 100,000	Production and supply of electricity	100%	100%
Huaneng Guigang Clean Energy Limited Liability Company*	PRC	held directly	RMB 10,000,000	Production and supply of electricity, investment, construction and operation of electricity projects	100%	100%
Huaneng Changxing Jiapu Photovoltaic Power Generation Limited Liability Company*	PRC	held directly	RMB 10,000,000	Production and supply of electricity, investment in electricity projects	100%	100%
Huaneng Hainan Energy Sales Limited Liability Company*	PRC	held indirectly	RMB 210,000,000	Construction and operation of heat and power supply facilities, operation of heat resources, heat network and power supply facilities	91.80%	91.80%
Huaneng Yangpu Co-generation Limited Company*	PRC	held indirectly	RMB 802,222,000	Investment, construction operation and management of electricity projects and heat pipe network	82.62%	82.62%

* These companies were newly established in 2017.

61

(ii) Subsidiaries acquired from business combinations under common control

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng (Suzhou Industrial Park) Power Generation Co., Ltd	PRC	held directly	RMB 632,840,000	Power generation	75%	75%
Huaneng Qinbei Power Generation Co., Ltd. ("Qinbei Power")	PRC	held directly	RMB 1,540,000,000	Power generation	60%	60%
Huaneng Yushe Power Generation Co., Ltd.	PRC	held directly	RMB 615,760,000	Power generation, power distribution, sales of power	60%	60%
Huaneng Hunan Yueyang Power Generation Limited Liability Company	PRC	held directly	RMB 1,935,000,000	Power generation	55%	55%
Huaneng Chongqing Luohuang Power Generation Limited Liability Company ("Luohuang Power")	PRC	held directly	RMB 1,748,310,000	Power generation	60%	60%
Huaneng Pingliang Power Generation Co., Ltd.	PRC	held directly	RMB 924,050,000	Power generation	65%	65%
Huaneng Nanjing Jinling Power Generation Co., Ltd.	PRC	held directly	RMB 1,513,136,000	Power generation	60%	60%
Huaneng Qidong Wind Power Generation Co., Ltd.	PRC	held directly	RMB 391,738,500	Development of wind power projects, production and sales of electricity	65%	65%
Tianjin Huaneng Yangliuqing Co-generation Limited Liability Company ("Yangliuqing Co-generation")	PRC	held directly	RMB 1,537,130,909	Power generation, heat supply, facilities installation, maintenance and related services	55%	55%
Huaneng Beijing Co-generation Limited Liability Company ("Beijing Co-generation") (iii)	PRC	held directly	RMB 3,702,090,000	Construction and operation of power plants and related construction projects	41%	66%
Huaneng Wuhan Power Generation Co., Ltd. ("Wuhan Power")	PRC	held directly	RMB 1,478,461,500	Investment, construction, operation and management of electricity projects, development and utilization of clean energy resources	75%	75%
Huaneng Anyuan Power Generation Co., Ltd. ("Anyuan Power")	PRC	held directly	RMB 1,175,117,300	Construction and operation of power plants and related construction projects, Production of electricity	100%	100%
Huaneng Hualiangting Hydropower Co., Ltd. ("Hualiangting Hydropower")	PRC	held directly	RMB 50,000,000	Generation and transfer of power supply, water supply (irrigation)	100%	100%
Huaneng Chaohu Power Generation Co., Ltd. ("Chaohu Power") (iv)	PRC	held directly	RMB 840,000,000	Construction, operation, management of electricity projects,development and utilization of clean energy resources	60%	70%
Huaneng Jingmen Thermal Power Co., Ltd. ("Jingmen Thermal Power")	PRC	held directly	RMB 780,000,000	Thermal power, power development and other service	100%	100%

62

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Enshi Qingjiang Dalongtan Hydropower Development Co., Ltd. ("Dalongtan Hydropower")	PRC	held directly	RMB 76,000,000	Hydropower development, production and management of electric power, urban water supply	97%	97%
Huaneng Suzhou Thermal Power Co., Ltd. ("Suzhou Thermal Power") (v)	PRC	held directly	RMB 600,000,000	Construction, operation and management of electricity projects, development and utilization of clean energy	53.45%	100%
Huaneng Hainan Power Generation Limited Company ("Hainan Power")	PRC	held directly	RMB 1,326,419,587	Investment, construction operation of various power plants, regular energy and new energy development	91.80%	91.80%
Huaneng Ruijin Power Generation Co., Ltd. ("Ruijin Power Generation")	PRC	held directly	RMB 536,923,299	Construction, operation, management of electricity projects, development and utilization of clean energy	100%	100%
Huaneng Yingcheng Thermal Power Co., Ltd. ("Yingcheng Thermal Power")	PRC	held directly	RMB 650,000,000	Construction and operation of power plants and production, sales of power and heat	100%	100%
Huaneng Heilongjiang Power Generation Limited Company ("Heilongjiang Power")	PRC	held directly	RMB 783,350,000	Development, investment, construction, production and management of power (thermal) projects	100%	100%
Huaneng Hegang Power Generation Limited Company ("Hegang Power")	PRC	held indirectly	RMB 1,092,550,000	The electricity power construction, energy conservation and development projects, heat production and supply	64%	64%
Huaneng Xinhua Power Generation Limited Liability Company ("Xinhua Power")	PRC	held indirectly	RMB 284,880,000	Power generation, power equipment repair	70%	70%
Huaneng Tongjiang Wind Power Generation Limited Company ("Tongjiang Wind Power")	PRC	held indirectly	RMB 330,000,000	Wind power generation, wind power plants operation, planning and design	82.85%	82.85%
Huaneng Daqing Thermal Power Limited Company ("Daqing Thermal Power")	PRC	held indirectly	RMB 630,000,000	Power generation, thermal production and supply	100%	100%
Daqing Luyuan Wind Power Generation Limited Company ("Luyuan Wind Power")	PRC	held indirectly	RMB 451,000,000	Wind power generation	100%	100%
Huaneng Yichun Thermal Power Limited Company ("Yichun Thermal Power")	PRC	held indirectly	RMB 534,000,000	Power construction, production and sales, thermal production and sales production of heat and hot water	100%	100%
Huaneng Heilongjiang Energy Sales Limited Company ("Heilongjiang Energy Sales")	PRC	held indirectly	RMB 210,000,000	Power supply,	100%	100%

63

					Percentage of equity interest held
Name of subsidiary	Country of incorporation	Type of Interest held	Registered capital	Business nature and scope of operations	Interest	Voting
Zhaodong Huaneng Thermal Power Limited Company ("Zhaodong Thermal Power")	PRC	held indirectly	RMB 10,000,000	Heating production and supply	100%	100%
Huaneng Jilin Power Generation Limited Company ("Jilin Power")	PRC	held directly	RMB 1,917,130,000	Power (thermal) projects, development of new energy projects investment, construction, production, operation and sales	100%	100%
Huaneng Linjiang Jubao Hydropower Limited Company ("Jubao Hydropower")	PRC	held indirectly	RMB 20,000,000	Hydropower development and operation, construction and operation of photovoltaic power generation	100%	100%
Huaneng Jilin Energy Sales Limited Company ("Jilin Energy Sales-)	PRC	held indirectly	RMB 210,000,000	Thermal (cold) production and supply, power supply	100%	100%
Huaneng Jilin Biological Power Generation Limited Company ("Jilin Biological Power')	PRC	held indirectly	RMB 183,800,000	Biomass power generation	100%	100%
Huaneng Shandong Power Generation Limited Company ("Shandong Power")	PRC	held directly	RMB 4,241,460,000	Power (thermal) project development, investment. construction and management	80%	80%
Huaneng Jining New Energy Limited Company ("Jining New Energy") (vi)	PRC	held indirectly	RMB 38,000,000	investment, construction and management of photovoltaic and wind power projects	80%	100%
Huaneng Zibo Boshan Photovoltaic Power Limited Company ("Zibo Photovoltaic") (vi)	PRC	held indirectly	RMB 22,000.000	Solar power generation, sales	80%	100%
Huaneng Rizhao Thermal Power Limited Company ("Rizhao Thermal Power") (vi)	PRC	held indirectly	RMB 52,000,000	Urban heat construction, maintenance and operation design and construction of heat engineering	80%	100%
Huaneng Laiwu New Energy Limited Company ("Laiwu New Energy") (vi)	PRC	held indirectly	RMB 68,000,000	Photovoltaic power and wind power generation	80%	100%
Huaneng Shandong Sishui New Energy Limited Company ("Sishui New Energy") (vi)	PRC	held indirectly	RMB 36,000,000	Solar energy grid connected generation	80%	100%
Huaneng Shandong Electric And Thermal Power Marketing Limited Company ("Shandong Power Marketing") (vi)	PRC	held indirectly	RMB 200,000,000	Sales and service of power and heating products, investment in power industry	80%	100%
Huaneng Shandong Information Technology Limited Company ("Shandong Power Information Company") (vi)	PRC	held indirectly	RMB 80,000,000	Information technology and management consulting services	80%	100%
Huaneng Penglai Wind Power Generation Limited Company ("Penglai Wind Power") (vi)	PRC	held indirectly	RMB 177,210,000	Development, investment, construction and management of wind power projects	80%	100%

64

					Percentage of equity interest held
Name of subsidiary	Country of incorporation	Type of Interest held	Registered capital	Business nature and scope of operations	Interest	Voting

Huaneng Zhanhua New Energy Limited Company ("Zhanhua New Energy") (vi)	PRC	held indirectly	RMB 235,298,200	Wind power, photovoltaic power generation	80%	100%
Huaneng Venial Bajiao Thermal Power Limited Company ("Hajino Thermal Power") (vi)	PRC	held indirectly	RMB 540,000,000	Power generation projects preparation	80%	100%
Huaneng Weihai Port Photovoltaic Power Generation Limited Company ("Port Photovoltaic") (vi)	PRC	held indirectly	RMB 24,960,000	Photovoltaic power generation projects development and construction, electricity sales	80%	100%
Huaneng Zibo Baiyanghe Power Generation Limited Company ("Baiyanghe Power") (vi)	PRC	held indirectly	RMB 1,098,567,344	Power production, ongrid sales, thermal production and supply	80%	100%
Huaneng Yantai Power Generation Limited Company ("Venial Power") (vi)	PRC	held indirectly	RMB 547,479,100	Production and sales of electricity power and heat	80%	100%
Huaneng Jinan Huangtai Power Generation Limited Company ("Huangtai Power") (vi)	PRC	held indirectly	RMB 1,391,878,400	Electricity power production, heating management	72%	90%
Huaneng Dezhou Thermal Power Limited Company ("Dezhou Thermal Power") (vi)	PRC	held indirectly	RMB 20,000,000	Urban heat construction, maintenance and operation design and construction of heat engineering	68%	85%
Huaneng Dongying New Energy Limited Company ("Dongying New Energy") (vi)	PRC	held indirectly	RMB 87,906,822	Wind power projects development, wind power generation and sales of electricity	56%	70%
Huaneng Shandong Power Generation Maintenance Technology Limited Company ("Shandong Maintenance Company") (vi)	PRC	held indirectly	RMB 50,000,000	Power engineering design, construction and construction	76.55%	100%
Huaneng Shandong Electric Power Fuel Limited Company ("Shandong Fuel Company') (vi)	PRC	held indirectly	RMB 100,000,000	Wholesale operation of coal	76.55%	100%
Shandong Rizhao Power Generation Limited Company ("Rizhao Power")(vi)	PRC	held indirectly	RMB 1,245,587,900	Heat, engaged in power business	88.80%	100%
Huaneng Laiwu Power Generation Limited Company ("Laiwu Power") (vi)	PRC	held indirectly	RMB 1,800,000,000	Power production	64%	80%
Huaneng Shandong Ruyi Coal Power Limited Company ("Ruyi Coal Power") (vi)	PRC	held indirectly	RMB 1,294,680,000	Development, investment, construction, operation and management of electricity power and coal	40%	100%
Huaneng Jiaxiang Power Generation Limited Company ("Jiaxiang Power") (vi)	PRC	held indirectly	RMB 646,680,000	Power generation, electrical equipment maintenance	40%	100%

65

					Percentage of equity interest held
Name of subsidiary	Country of incorporation	Type of Interest held	Registered capital	Business nature and scope of operations	Interest	Voting

Huaneng Qufu Co-generation Limited Company ("Qufu Co-generation") (vi)	PRC	held indirectly	RMB 300,932,990	Sales and production of electric power, thermal power	40%	100%
Huaneng Jining Hi-Tech Zone Co-generation Limited Company ("Jining Co-generation") (vi)	PRC	held indirectly	RMB 118,699,760	Heat supply and power generation	40%	100%
Huaneng Shandong (Hongkong) Investment Limited Company ("Hong Kong Investment") (vi)	Hong Kong	held indirectly	10,000 Shares	Investment	80%	100%
Shandong Silk Road International Power Limited Company ("Shandong Silk Road") (vi)	PRC	held indirectly	RMB 35,000,000	Contracting overseas projects and domestic international bidding projects, construction and operation of power projects	80%	100%
Shandong Changdao Wind Power Generation Limited Liability Company ("Changdao Wind Power") (vi)	PRC	held indirectly	RMB 33,500.000	Wind power, on-grid sales	48%	60%
Huaneng Rongcheng New Energy Co., Ltd. ("Rongcheng New Energy'', (vi)	PRC	held indirectly	RMB 36,540,000	Wind power generation	48%	100%
Huaneng Jining Yunhe Power Generation Co., Ltd. ("Yunhe Power") (vi)	PRC	held indirectly	RMB 696,355,300	Electrical (thermal) production and on-grid sales, technology consulting and services	78.68%	98.35%
Huaneng Linyi Power Generation Limited Company ("Linyi Power") (vi)	PRC	held indirectly	RMB 1,093,313,404	Power generation	60%	75%
Liaocheng Changrun National Electric Heating Limited Company ("Liaocheng Changrun") (vi)	PRC	held indirectly	RMB 130,000,000	Heat operation, installation and repair of water, electricity, heating	60%	75%
Linyi Lantian Thermal Power Limited Company ("Lantian Thermal Power") (vi)	PRC	held indirectly	RMB 36,000,000	Heat supply, maintenance of thermal power network, power sales, installation and maintenance of distribution facilities	54.40%	68%
Yantai 500 Heating Limited Company ("Yantai 500") (vi)	PRC	held indirectly	RMB 20,500,000	Central heat services, plumbing and pipe installation services	64%	80%
Huaneng Liaocheng Co-generation Limited Company ("Liaocheng Co-generation) (vi)	PRC	held indirectly	RMB 610,670,000	Power, heat production and sales	60%	100%
Huaneng Henan Zhongyuan Gas Power Generation Co., Ltd. ("Zhongyuan Gas")	PRC	held directly	RMB 400,000,000	Investment, construction, operation and management of power projects. thermal supply, development and utilization of clean energy resources	90%	90%

The subsidiaries above and the Company are all controlled by Huaneng Group before and after the acquisitions.

66

(iii) Subsidiaries acquired from business combinations not under common control

					Percentage of equity interest held
Name of subsidiary	Country of incorporation	Type of Interest held	Registered capital	Business nature and scope of operations	Interest	Voting
Huaneng Weihai Power Generation Limited Liability Company ("Weihai Power")	PRC	held directly	RMB 1,822,176,621	Power generation	60%	60%
Huaneng Huaiyin Power Generation Limited Company	PRC	held directly	RMB 265,000,000	Power generation	100%	100%
Huade County Daditaihong Wind Power Utilization Limited Liability Company	PRC	held directly	RMB 196,400,000	Wind power development and utilization	100%	100%
Huaneng Zhanhua Co-generation Limited Company	PRC	held directly	RMB 190,000,000	Production and sales of electricity and thermal energy	100%	100%
Shandong Hualu Sea Transportation Limited Company	PRC	held directly	RMB 100,000,000	Cargo transportation along domestic coastal areas, goods storage	53%	53%
Huaneng Qingdao Port Limited Company	PRC	held directly	RMB 219,845,000	Loading and conveying warehousing, conveying, water carriage materials supply	51%	51%
Huaneng Yunnan Diandong Energy Limited Liability Company ("Diandong Energy")	PRC	held directly	RMB 3,769,140,000	Electricity projects investment power generation and sales, coal exploitation and investment	100%	100%
Yunnan Diandong Yuwang Energy Limited Company ("Diandong Yuwang")	PRC	held directly	RMB 1,700,740,000	Electricity projects investment power generation and sales, coal exploitation and investment	100%	100%
Huaneng Suzihe Hydropower Development Limited Company	PRC	held directly	RMB 50,000,000	Hydropower, aquaculture, agriculture irrigation	100%	100%
Enshi City Mawei Valley Hydropower Development Co, Ltd.	PRC	held directly	RMB 101,080,000	Hydro-resource development hydropower, aquaculture	100%	100%
Huaneng Luoyang Co-generation Limited Liability Company	PRC	held directly	RMB 600,000,000	Production and sales of electricity and heating	80%	80%
Huaneng Jinling Combined Cycle Co-generation Co., Ltd. ("Jinling CCGT") (vii)	PRC	held directly	RMB 356,350,000	Construction and management of power plants and related projects	51%	72%
Huaneng Zhumadian Wind Power Generation Co, Ltd.	PRC	held directly	RMB 30,000,000	Wind power generation, new energy development and utilization	90%	90%
SinoSing Power	Singapore	held directly	US$ 1,476,420,585	Investment holding	100%	100%
Tuas Power	Singapore	held indirectly	S$ 1,433,550,000	Investment holding	100%	100%
Tuas Power Supply Pte Ltd.	Singapore	held indirectly	S$ 500,000	Power sales	100%	100%
TP Asset Management Pte Ltd.	Singapore	held indirectly	S$ 2	Render of environment engineering services	100%	100%
TPGS Green Energy Pte Ltd.	Singapore	held indirectly	S$ 1,000,000	Provision of utility services	75%	75%
NewEarth Pte Ltd.	Singapore	held indirectly	S$ 10,111,841	Consultancy in waste recycling	100%	100%
NewEarth Singapore Pte Ltd.	Singapore	held indirectly	S$ 17,816,050	Industrial waste management and recycling	100%	100%

67

					Percentage of equity interest held
Name of subsidiary	Country of incorporation	Type of Interest held	Registered capital	Business nature and scope of operations	Interest	Voting

Xuzhou Tongshan District Xiehe Wind Power Generation Limited Liability Company ("Tongshan Xiehe Wind Power Generation")	PRC	held indirectly	RMB 3,000,000	Wind power generation	100%	100%
Luoyang Yangguang Co-generation Limited Liability Company ("Yangguang Co-generation")	PRC	held indirectly	RMB 250,000,000	Production and supply of electricity and heat power	100%	100%
Shanxi Xiaoyi Economic Development Zone Huaneng Energy Service Co, Ltd. ("Shanxi Xiaoyi Energy") (viii) (Note 40)	PRC	held indirectly	RMB 100,000,000	Electricity sales, sales of raw coal and processed coal	51%	100%
Ruzhou Xuji Wind Power Generation Limited Co. Ltd (Note 40)	PRC	held indirectly	RMB 4,000,000	Wind power and photovoltaic power generation	95%	100%

Note:

(i)  According to its article of association, the other shareholder who holds the remaining equity interests of Shidongkou Power entrusts the Company to exercise all its voting rights in relation to the operation and financial policies of Shidongkou Power. Accordingly, the Company has control over Shidongkou Power.

(ii)  The Company holds 90% interest in Liangjiang Power, and Liangjiang Power holds 60% interest in Huaqing Energy. Therefore, the company indirectly holds 54% equity interest in Huaqing Energy.

(iii)  Pursuant to an agreement entered into between the Company and another shareholder, the Company is entrusted to vote the 25% voting rights held by the other shareholder as long as the Company remains as the largest shareholder of Beijing Co-generation. Thus, the Company has majority voting rights required by the article of association to control the operation and financial policies of Beijing Co-generation. Accordingly, the Company has control over Beijing Co-generation.

(iv)  According to the voting in concert agreement entered into between the Company and one shareholder with 10% equity interests in Chaohu Power, the shareholder agreed to vote the same in respect of significant financial and operating decisions made by the Company. As a result, the Company has control over Chaohu Power.

(v)  According to the voting in concert agreement entered into between the Company and the other two shareholders in Suzhou Thermal Power, the shareholders agreed to vote the same in respect of significant financial and operating decisions made by the Company. As a result, the Company has control over Suzhou Thermal Power.

(vi)  These companies are subsidiaries of Shandong Power. The Company holds 80% interest in Shandong Power. Thus, the Company indirectly holds 80% interest in these companies through their parent company.

Zhanhua Photovoltaic Company is a newly established subsidiary of Shandong Power in 2017. Zhanhua New Energy, a wholly-owned subsidiary of Shandong Power, holds 58% equity interests in Zhanhua Photovoltaic Company. Thus, the Company indirectly holds 46.4% equity interests in Zhanhua Photovoltaic Company.

Weishan New Energy and Helan New Energy are wholly-owned subsidiaries of Ruyi Coal Power, a 50% owned subsidiary of Shandong Power. As a result, the Company indirectly holds 40% interest in Weishan New Energy and Helan New Energy.

68

Shandong Power directly holds 58% interest in Shandong Fuel Company and Shandong Maintenance Company; meanwhile, Shandong Power indirectly holds a total of 37.68% equity interests in Shandong Fuel Company and Shandong Maintenance Company respectively through its own subsidiaries: Baiyanghe Power, Huangtai Power, Yantai Power, Linyi Power, Liaocheng Co-generation and Yunhe Power. Thus, the Company indirectly holds 76.55% interest in Shandong Maintenance Company and Shandong Fuel Company respectively.

The Company directly holds 44% equity interests in Rizhao Power and Shandong Power directly holds 56% interest in Rizhao Power; Thus, the Company holds 88.8% interest in Rizhao Power;

Jiaxiang Power, Qufu Co-generation, Jining Co-generation are wholly-owned subsidiaries of Ruyi Coal Power. Thus, the Company indirectly holds 40% interest in Ruyi Coal Power, Jiaxiang Power, Qufu Co-generation and Jining Co-generation;

In according to the voting in concert agreement entered into among the Shandong Power and other equity holders of Laiwu Power, Ruyi Coal Power, Rongcheng New Energy, Liaocheng Co-generation, the other equity holders agreed to vote the same in respect of significant financial and operating decisions made by the Shandong Power. As a result, the Company has control over these companies.

(vii)  According to the voting in concert agreement entered into between the Company and one shareholder with 21% equity interests in Jinling CCGT, the shareholder agreed to vote the same in respect of significant financial and operating decisions made by the Company under the circumstances that its legitimate entitlements are guaranteed. As a result, the Company has control over Jinling CCGT.

(viii)  In 2016, the Company accounted for the investment in Shanxi Xiaoyi Energy as a joint venture. On 15 February 2017, the Company entered into an agreement with other shareholder with 49% equity interests in Shanxi Xiaoyi Energy who agreed to vote the same in respect of significant financial and operating decisions made by the Company. As a result, the Company has control over Shanxi Xiaoyi Energy since February 2017.

(ix)  Suzhou Combined Cycle Co-generation Limited Company was acquired by Suzhou Thermal Power, another subsidiary of the Company, which was accounted for as an equity transaction, resulting in reclassification of RMB28 million from non-controlling interest to reserve.

(x)  The Company acquired 49% non-controlling interests of Huaneng (Luoyuan) Port Limited Company from the other equity holder, which was accounted for as equity transaction, with the difference of RMB4 million between consideration paid and derecognised non-controlling interest recorded in reserve.

 For the information of material non-controlling interest ("NCI"), please refer to Note 41.

69

10 Available-for-sale financial assets

Available-for-sale financial assets include the following:

	As at 31 December
	2017		2016
Listed security (Fair value measurement)
China Yangtze Power Co., Ltd.		-		1,820,255
Others		9,223		458
Subtotal		9,223		1,820,713
Unlisted securities (Cost measurement)
10% of Shanxi Xishan Jinxing Energy Co., Ltd.		531,274		531,274
9.09% of Ganlong Double-track Railway Co., Ltd.		1,000,000		1,000,000
Others		64,496		54,045
Subtotal		1,595,770		1,585,319
Total		1,604,993		3,406,032

There were no impairment provisions provided on available-for-sale financial assets in 2017 and 2016.

In 2017, all of the 143.78 million shares of China Yangtze Power Co., Ltd. held by the Company were disposed with cash consideration of RMB2.191 billion received. After deducting initial investment costs and related taxes, investment income was recognized amounting to approximately RMB1,480 million, with other comprehensive income of RMB1,135 million reclassified to profit or loss.

70

11 Land use rights

The movements in the carrying amount of land use rights during the years are as follows:

	2017			2016
Beginning of the year
Cost		10,525,537			10,059,872
Accumulated amortization		(1,792,367	)		(1,530,972	)
Accumulated impairment losses		(276,823	)		(215,134	)
Net book value		8,456,347			8,313,766
Movement:
Business combination (Note 40)		3,182,914			61,027
Addition		331,683			364,280
Amortization charge for the year		(368,898	)		(242,400	)
Impairment charge for the year (Note 7)		(108,590	)		(51,981	)
Disposals		(86,631	)		(1,969	)
Disposal of subsidiaries		(146,922	)		-
Currency translation differences		4,882			13,624
End of the year		11,264,785			8,456,347
Cost		13,775,976			10,525,537
Accumulated amortization		(2,128,752	)		(1,792,367	)
Accumulated impairment losses		(382,439	)		(276,823	)
Net book value		11,264,785			8,456,347

All the lands located in the PRC and Singapore are leased from respective governments according to corresponding regulations applied across the countries. The Company and its subsidiaries will renew the leases according to the operation requirements of the Company and its subsidiaries and the related regulations of respective countries.

Land use rights without ownership certificate

As at 31 December 2017, the Company and its subsidiaries were in the process of applying for the ownership certificate for certain land use right with an aggregate net book value of RMB1,246 million (2016: RMB792 million). The management are of the opinion that the Company and its subsidiaries are entitled to the lawful and valid occupation and use of the above mentioned land.

71

12 Power generation licenses

The movements in the carrying amount of power generation license during the years are as follows:

	2017		2016
Beginning of the year		3,849,199		3,679,175
Movement:
Currency translation differences		67,047		170,024
End of the year		3,916,246		3,849,199

The Company and its subsidiaries acquired the power generation license in connection with the acquisition of Tuas Power. The power generation license was initially recognized at fair value at the acquisition date. Tuas Power operates power plants in Singapore pursuant to the license granted by the Energy Market Authority for a period of 30 years from 2003 until 2032. The license was extended to 2044 during 2011 with minimal costs and is subject to further renewal. The Company and its subsidiaries expect that the applicable rules and regulations surrounding the renewal can be complied with based on the current market framework. The Company and its subsidiaries assessed the useful life of the power generation license at 31 December 2017 as indefinite and therefore the license is not amortized.

Impairment test of power generation license

Power generation license belongs to and has been assigned to Tuas Power, a CGU. The recoverable amount of the CGU is determined based on value-in-use calculation. Management prepared the impairment model based on budget approved by the Board and various factors, such as inflation, power demand and other factors as well as the terminal value.

Key assumptions used for value-in-use calculation:

Management has assessed that one of the most sensitive key assumptions is the discount rate which was arrived at based on weighted average cost of capital. The discount rate applied in determining the recoverable amounts of the CGU was 7.30% (31 December 2016: 7.54%). An absolute increase in the discount rate of 0.5% (31 December 2016: 0.5%) would result in approximately RMB2,043 million (31 December 2016: RMB1,899 million) decrease in the recoverable amount of the CGU.

Other key assumptions include projection of its business performance based on estimation of gross margin from electricity sold, volume of electricity sold and other operating expenses, which are largely based on a combination of past performance of the CGU, its expectation of market developments and consistency with forecasts included in industry reports. On average, the growth rates of 3.0% was used in consideration of future expansion plans and new development projects as part of the long-term strategy. Cash flows beyond the terminal year was extrapolated using a growth rate of 2%.

Based on the assessments, no impairment was provided for the power generation license.

72

13 Mining rights

The movements in the carrying amount of mining rights during the years are as follow:

	2017			2016
Beginning of the year
Cost		2,406,567			2,406,567
Accumulated impairment losses		(760,296	)		(760,296	)
Net book value		1,646,271			1,646,271
Movement:
Addition		-			-
Impairment charge for the year		-			-
End of the year		1,646,271			1,646,271
Cost		2,406,567			2,406,567
Accumulated impairment losses		(760,296	)		(760,296	)
Net book value		1,646,271			1,646,271

73

14 Derivative financial instruments

Details of derivative financial instruments are as follows:

	As at 31 December
	2017		2016
Derivative financial assets
－Hedging instruments for cash flow hedge (fuel swap contracts)		330,966		264,535
－Hedging instruments for cash flow hedge (exchange forward contracts)		-		107,907
－Financial instruments at fair value through profit or loss (fuel swap contracts)		2,726		5,881
Total		333,692		378,323
Less: non-current portion
－Hedging instruments for cash flow hedge (fuel swap contracts)		75,328		71,341
－Hedging instruments for cash flow hedge (exchange forward contracts)		-		28,380
Total non-current portion		75,328		99,721
Current portion		258,364		278,602
Derivative financial liabilities
－Hedging instruments for cash flow hedge (fuel swap contracts)		11,794		164,464
－Hedging instruments for cash flow hedge (exchange forward contracts)		68,102		454
－Hedging instruments for cash flow hedge (interest rate swap contracts)		130,643		169,201
－Financial instruments at fair value through profit or loss (fuel swap contracts)		125		619
Total		210,664		334,738
Less: non-current portion
－Hedging instruments for cash flow hedge (fuel swap contracts)		2,026		31,673
－Hedging instruments for cash flow hedge (exchange forward contracts)		21,745		295
－Hedging instruments for cash flow hedge (interest rate swap contracts)		124,715		169,201
Total non-current portion		148,486		201,169
Current portion		62,178		133,569

74

For the years ended 31 December 2016 and 2017, no material ineffective portion was recognized in the profit or loss arising from cash flow hedges.

The Company uses an interest rate swap contract to hedge its interest rate risk against one of its variable rate loans. The notional principal amount of the outstanding interest rate swap contract at 31 December 2017 was US$176million (RMB equivalents of RMB1,150 million) (2016: US$208 million (RMB equivalents of RMB1,443 million)). Through this arrangement, the Company pays an annual fixed interest of 4.40% while the original annual floating interest expense (6-month LIBOR+1%) attached in the loan is offset by the receivable leg of the interest rate swap. Such a swap is settled on a quarterly basis from September 2009 to September 2019.

TPG uses exchange forward contracts to hedge its foreign exchange risk arising from highly probable forecast purchase transactions. It also uses fuel oil swap contracts to hedge its fuel price risk arising from highly probable forecast purchases of fuel purchases.

TPG also uses various interest rate swap contracts to hedge floating semi-annual interest payments on borrowings with maturity dates up to 2020. The notional principal amount of these outstanding interest rate swap contracts at 31 December 2017 was S$1,069million (RMB equivalents of RMB5,220 million) (2016: S$1,359million (RMB equivalents of RMB6,522 million)). Through these arrangements, TPG swaps original floating interest (6-month SOR) to annual fixed interest determined by individual swap contracts. Such swap contracts are settled semi-annually from September 2011 to March 2020. As at 31 December 2017, these interest rate swap contracts are carried on the consolidated statements of financial position as financial liability of RMB108 million (2016: financial liability of RMB99 million).

75

The analysis of contractual cash inflows/(outflows) of major derivative financial instruments are as follows:

			Cash flows
	Carrying amounts		Contractual cash flows			Within 1 year			Between 1 and 5 years			After 5 years
As at 31 December 2017 Derivative financial assets Fuel derivatives used for hedging (net settlement)		330,966		330,966			255,638			75,328			-
Fuel derivatives that do not qualify as hedges (net settlement)		2,726		2,726			2,726						-
Derivative financial liabilities
Fuel derivatives used for hedging  (net settlement)		11,794		(11,794	)		(9,768	)		(2,026	)		-
Forward exchange contracts used for hedging
- inflows				2,509,363			2,041,812			467,551			-
- outflows				(2,568,034	)		(2,083,441	)		(484,593	)		-
		68,102		(58,671	)		(41,629	)		(17,042	)		-
Net-settled interest rate swaps used for hedging  - net cash inflows/(outflows)		130,643		(154,367	)		(82,533	)		(71,834	)		-
Fuel derivatives that do not qualify as hedges (net settlement)		125		(125	)		(125	)		-
As at 31 December 2016 derivative financial assets Fuel derivatives used for hedging (net settlement)		264,535		264,535			193,194			71,341			-
Forward exchange contracts used for hedging
- inflows				2,118,946			1,488,071			630,875			--
-  outflows				(2,009,205	)		(1,407,606	)		(601,599	)		-
		107,907		109,741			80,465			29,276			-
Fuel derivatives that do not qualify as hedges (net settlement)		5,881		5,881			5,881			-			-
Derivative financial liabilities
Fuel derivatives used for hedging (net settlement)		164,464		(164,464	)		(132,792	)		(31,672	)		-
Forward exchange contracts used for hedging
- inflows				527,939			475,881			52,058			-
- outflows				(528,454	)		(476,104	)		(52,350	)		-
		454		(515	)		(223	)		(292	)		-
Net―settled interest rate swaps used for hedging - net cash inflows/(outflows)		169,201		(228,905	)		(113,563	)		(115,342	)		-
Fuel derivatives that do not qualify as hedges (net settlement)		619		(619	)		(619	)		-			-

76

15 Goodwill

The movements of goodwill during the years are as follows:

	2017			2016
Beginning of the year
Cost		15,391,642			14,919,930
Accumulated impairment losses		(3,255,913	)		(3,242,748	)
Net book value		12,135,729			11,677,182
Movement:
Business combination (Note 40)		3,167,566			-
Disposal of subsidiary-cost		(309,269	)		-
Disposal of subsidiary-impairment		309,269			-
Currency translation differences-cost		186,015			471,712
Currency translation differences-impairment		(5,190	)		(13,165	)
End of the year		15,484,120			12,135,729
Cost		18,435,954			15,391,642
Accumulated impairment losses		(2,951,834	)		(3,255,913	)
Net book value		15,484,120			12,135,729

Impairment tests for goodwill

Goodwill is allocated to the CGUs of the Company and its subsidiaries.

The carrying amounts of major goodwill allocated to individual CGUs are as follows:

	2017		2016
PRC Power segment:
Shandong Power		2,739,818		-
Wuhan Power		518,484		518,484
Hainan Power		506,336		506,336
Heilongjiang Power		265,319		-
Yangliuqing Cogeneration		151,459		151,459
Qinbei Power		109,913		109,913
Jilin Power		109,826		-
Yueyang Power Company		100,907		100,907
Beijing Cogeneration		95,088		95,088
Singapore segment:
Tuas Power		10,561,956		10,381,131

77

The recoverable amount of a CGU is determined based on value-in-use calculations. For domestic CGUs, these calculations use cash flow projections based on management's financial budgets covering periods of no more than five years. The Company expects cash flows beyond such periods will be similar to that of the respective final forecast years on existing production capacity.

For the goodwill allocated to Tuas Power, management has based their assessment of recoverable amount on value-in-use calculations. Management prepared the impairment model based on budget approved and various factors, such as inflation, power demand and other factors as well as the terminal value. On average, the growth rates of 3.0% was used in consideration of future expansion plans and new development projects as part of the long-term strategy. Cash flows beyond the terminal year was extrapolated using a growth rate of 2.0%.

Discount rates used for value-in-use calculations:

PRC Power segment	8.51%-13.59	%
Singapore segment	7.30	%

Key assumptions used for value-in-use calculations:

Key assumptions applied in the impairment tests include the expected tariff rates, demands of electricity in specific regions where these power plants are located and fuel cost. Management determined these key assumptions based on past performance and its expectations on market development. The discount rates used reflect specific risks relating to individual CGUs. Management believes that any reasonably possible change in any of these key assumptions on which recoverable amounts of individual CGUs are based may cause carrying amounts of individual CGUs to exceed their recoverable amounts. Please refer to Note 4 and 12 for details of respective sensitivity analysis on domestic and oversea CGU impairment testing.

In 2017 and 2016, the increase of goodwill in respect of Tuas Power was due to currency translation differences.

16 Other non-current assets

Details of other non-current assets are as follows:

	As at 31 December
	2017		2016
VAT recoverable		2,741,604		1,651,891
Prepayments for pre-construction cost		937,161		-
Intangible assets *		697,884		411,308
Finance lease receivables		617,187		563,099
Prepaid territorial water use right **		374,743		777,994
Prepayments for capacity quota		303,399		-
Profit compensation from Huaneng Group (Note 40)		244,533		-
Prepaid connection fees		120,486		108,365
Others		1,659,848		809,288
Total		7,696,845		4,321,945

* The intangible assets primarily consist of software, patented technologies and etc. In 2017, there is no impairment provided for the intangible assets (2016: RMB nil).

** The prepaid territorial water use right are amortized over the contractual period of 50 years.

78

17 Inventories

Inventories comprised:

	As at 31 December
	2017		2016
Fuel (coal and oil) for power generation		5,684,824		5,391,068
Material and supplies		1,869,462		1,655,357
		7,554,286		7,046,425
Less: provision for inventory obsolescence		168,875		167,282
Total		7,385,411		6,879,143

Movements of provision for inventory obsolescence during the years are analyzed as follows:

	2017			2016			2015
Beginning of the year		(167,282	)		(162,389	)		(163,458	)
Provision		(1,520	)		(1,134	)		(2,867	)
Reversal		1,782			1,390			1,039
Disposal of subsidiaries		162			-			-
Currency translation differences		(2,017	)		(5,149	)		2,897
End of the year		(168,875	)		(167,282	)		(162,389	)

79

18 Other receivables and assets

Other receivables and assets comprised the following:

	As at 31 December
	2017		2016
Prepayments for inventories		387,335		252,389
Prepaid income tax		150,838		141,423
Prepayments for pre-construction cost		-		885,051
Prepayments for capacity quota		-		303,399
Others		181,913		121,810
Total prepayments		720,086		1,704,072
Less: provision for doubtful accounts		4,638		-
Total prepayments, net		715,448		1,704,072
Dividends receivable		273,897		861,408
Receivables from sales of fuel		290,040		-
Others		1,528,855		908,296
Subtotal other receivables		2,092,792		1,769,704
Less: provision for doubtful accounts		29,241		28,961
Total other receivables, net		2,063,551		1,740,743
Profit compensation from Huaneng Group (Note 40)		615,013		-
VAT recoverable		2,607,505		2,008,955
Designated loan to a joint venture		80,000		80,000
Gross total		6,115,396		5,562,731
Net total		6,081,517		5,533,770

Please refer to Note 36 for details of other receivables and assets due from the related parties.

The gross amounts of other receivables are denominated in the following currencies:

	As at 31 December
	2017		2016
RMB		1,966,971		1,635,051
S$ (RMB equivalent)		76,529		95,816
US$ (RMB equivalent)		49,292		38,837
Total		2,092,792		1,769,704

80

Movements of provision for doubtful accounts during the years are analyzed as follows:

	2017			2016			2015
Beginning of the year		(28,961	)		(27,957	)		(29,644	)
Provision		(5,890	)		(1,011	)		(9	)
Reversal/write-off		972			7			1,696
End of the year		(33,879	)		(28,961	)		(27,957	)

As at 31 December 2017, there was no indication of impairment relating to other receivables which were not past due and no material provision was made (2016: nil).

As at 31 December 2017, other receivables of RMB140 million (2016: RMB113 million) were past due but not impaired. These amounts mainly represent funds deposited in a government agency and are fully recoverable. The ageing analysis of these other receivables was as follows:

	As at 31 December
	2017		2016
Within 1 year		61,189		42,103
Between 1 to 2 years		1,360		2,683
Between 2 to 3 years		1,130		847
Over 3 years		76,376		67,476
Total		140,055		113,109

As at 31 December 2017, other receivables of RMB41 million which were past due (2016: RMB36 million) were impaired and a provision of RMB29 million (2016: RMB29 million) has been provided against the receivables. The individually impaired receivables have been long outstanding without any repayment agreements in place or possibility of renegotiation. It was assessed that a substantial portion of the receivables is not expected to be recovered. The ageing of these other receivables was as follows:

	As at 31 December
	2017		2016
Within 1 year		7,535		752
Between 1 to 2 years		10		912
Between 2 to 3 years		463		285
Over 3 years		33,402		34,263
Total		41,410		36,212

81

19 Accounts receivable

Accounts receivable comprised the following:

	As at 31 December
	2017		2016
Accounts receivable		21,948,753		14,050,096
Notes receivable		3,610,928		2,432,264
		25,559,681		16,482,360
Less: provision for doubtful accounts		112,086		88,889
Total		25,447,595		16,393,471

The gross amounts of account receivables are denominated in the following currencies:

	As at 31 December
	2017		2016
RMB		24,633,465		15,586,989
S$ (RMB equivalent)		922,993		876,956
US$ (RMB equivalent)		3,223		18,415
Total		25,559,681		16,482,360

The Company and its subsidiaries usually grant about one month's credit period to local power grid customers from the end of the month in which the sales are made, except for SinoSing Power which provides credit period that ranges from 5 to 60 days from the dates of billings. Certain accounts receivables of Singapore subsidiaries are backed by bankers' guarantees and/or deposits from customers. It is not practicable to determine the fair value of the collaterals that correspond to these accounts receivable.

As at 31 December 2017, no accounts receivable was secured to banks as collateral against loans (2016: nil).

For the collateral of notes receivable, please refer to Note 27 for details.

Movements of provision for doubtful accounts during the years are analyzed as follows:

	2017			2016			2015
Beginning of the year		(88,889	)		(2,054	)		(11,809	)
Provision		(23,363	)		(88,818	)		(60	)
Reversal		-			397			1,833
Write-off		167			1,682			-
Transfer from a subsidiary to a joint venture		-			-			8,126
Currency translation differences		(1	)		(96	)		(144	)
End of the year		(112,086	)		(88,889	)		(2,054	)

As at 31 December 2017, the Company and its subsidiaries recognised provisions for accounts receivable assessed on an individual basis, which mainly consists of receivables due from local customers for sales of electricity or heat. The provisions were provided based on operating results of the local customers and collectability of the receivables.

82

(a) Ageing analysis of accounts receivable was as follows:

	As at 31 December
	2017		2016
Within 1 year		24,787,284		16,152,038
Between 1 to 2 years		576,564		279,694
Between 2 to 3 years		155,360		29,123
Over 3 years		40,473		21,505
Total		25,559,681		16,482,360

As at 31 December 2017, the maturity period of the notes receivable ranged from 1 to 12 months (2016: from 1 to 12 months).

(b) Ageing analysis of accounts receivable and notes receivable that are neither individually nor collectively considered to be impaired are as follows:

	As at 31 December
	2017		2016
Neither past due nor impaired		24,936,171		16,063,215
Less than 1 year past due		267,845		248,597
Between 1 to 2 years past due		206,188		63,094
Between 2 to 3 years past due		27,130		17,944
Over 3 years past due		10,261		621
Total		25,447,595		16,393,471

Receivables that were past due but not impaired relate to a number of independent customers that have a good track record with the Company and its subsidiaries. Based on past experience, management believes that no impairment allowance is necessary in respect of these balances as there has not been a significant change in credit quality and the balances are still considered fully recoverable.

20 Share capital

	2017				2016
	Number of shares		Share capital		Number of shares		Share capital
			RMB '000				RMB '000
As at 1 January and 31 December
A shares		10,500,000,000		10,500,000		10,500,000,000		10,500,000
Overseas listed foreign shares		4,700,383,440		4,700,383		4,700,383,440		4,700,383
Total		15,200,383,440		15,200,383		15,200,383,440		15,200,383

83

21 Perpetual Corporate Bonds

(a) Perpetual corporate bonds as at 31 December 2017

format only

Type of Bonds	Issuance Date	Category	Initial Annual Distribution Rates	Issue Price	Number	Par Value	Initial Period	Conversion Condition	Conversion Result
				RMB '000		RMB '000
Bond A	September 2017	Equity Instrument	5.05%	0.1	25,000,000	2,500,000	3 Years	None	None
Bond B	September 2017	Equity Instrument	5.17%	0.1	25,000,000	2,500,000	5 years	None	None
Total						5,000,000

(b) Major Provisions

In 2017, the Company issued perpetual corporate bonds with the aggregate net proceeds of approximate RMB5,000 million. The perpetual corporate bonds are issued at par value with initial annual distribution rate of 5.05% and 5.17%. The interests of the perpetual corporate bonds are recorded as distributions, which are paid annually in arrears in September in each year and may be deferred at the discretion of the Company unless compulsory distribution payment events (distributions to ordinary shareholders of the Company or reduction of the registered capital of the Company) occurred.

The perpetual corporate bonds have no fixed maturity date and are callable at the Company's discretion in whole in August 2020 and 2022 respectively, the payment of the principal may be deferred for each renewal period as 3 and 5 years. The applicable distribution rate will be reset on first call date and each renewal period after first call date, to the sum of the applicable benchmark interest rate, the initial spread and 300 basis points per annum.

The perpetual corporate bonds were recorded as equity in the consolidated financial statements. During the year ended 31 December 2017, the profit attributable to holders of perpetual corporate bonds, based on the applicable distribution rate, was RMB69 million.

(c) Changes of perpetual corporate bonds during 2017

The perpetual corporate bonds were recorded as equity in the consolidated financial statements. During the year ended 31 December 2017, the profit attributable to holders of perpetual corporate bonds, based on the applicable distribution rate, was RMB69 million.

	As at 1 January 2017				Issurance				Cumulative Interests		As at 31 December 2017
Type of Bonds	Number		Amount		Number		Amount				Number		Amount
			RMB '000				RMB '000		RMB '000				RMB '000
Bond A		-		-		25,000,000		2,499,975		33,897		25,000,000		2,533,872
Bond B		-		-		25,000,000		2,499,975		34,703		25,000,000		2,534,678
Total		-		-		50,000,000		4,999,950		68,600		50,000,000		5,068,550

22 Surplus reserves

	As at 1 January 2017 and 31 December 2017
Surplus reserves		8,140,030

According to the Company Law of the PRC, the Company's articles of association and board resolutions, the Company appropriates 10% of each year's net profit under PRC GAAP to the statutory surplus reserve. The Company has the option to cease provision for such reserve when it reaches 50% of the registered share capital. Upon the approval from relevant authorities, this reserve can be used to make up any losses incurred or to increase share capital. Except for offsetting against losses, this reserve cannot fall below 25% of the registered share after being used to increase share capital.

84

As the statutory surplus reserve reaches 50% of the registered share capital in 2017, the Company made no provision this year.

Appropriation of discretionary surplus reserve is proposed by the Board of Directors, and approved by the general meeting of shareholders. This reserve can be used to make up any losses incurred in prior years or to increase the share capital after obtaining relevant approvals. For the years ended 31 December 2017 and 2016, no provision was made to the discretionary surplus reserve.

According to the articles of association, in distributing the Company's profits after tax for the relevant accounting year, the lower of amounts determined in accordance with PRC GAAP and IFRS shall be adopted. As at 31 December 2017, in accordance with PRC GAAP and IFRS, the balance of retained earnings for the Company and its subsidiaries amounted to approximately RMB31.965 billion and RMB35.793 billion, respectively.

23 Dividends

On 13 March 2018 the Board of Directors proposed a cash dividend of RMB0.1 per share, totaling approximately RMB1,520 million. This proposal is subject to the approval of the shareholders at the annual general meeting.

On 13 June 2017, upon the approval from the annual general meeting of the shareholders, the Company declared 2016 final dividend RMB0.29 (2015: RMB0.47) per ordinary share, totaling approximately RMB4,408 million (2015: RMB7,144 million).

24 Long-term loans

Long-term loans comprised the following:

	As at 31 December
	2017		2016
Loans from Huaneng Group
and its subsidiaries (a)		7,427,183		3,818,807
Bank loans and other loans (b)		117,702,233		70,732,439
		125,129,416		74,551,246
Less: Current portion of long-term loans		18,098,458		9,560,885
Total		107,030,958		64,990,361

85

(a) Loans from Huaneng Group and its subsidiaries

Details of loans from Huaneng Group and its subsidiaries are as follows:

	As at 31 December 2017
	Original currency		RMB equivalent		Less: Current portion		Non current portion		Annual interest rate
		000
Loans from Huaneng Group
Unsecured
RMB
- Variable rate		665,225		665,225		-		665,225		4.75	%
Loans from Huaneng Finance
Unsecured
RMB
- Variable rate		2,794,780		2,794,780		244,500		2,550,280		4.28%-4.66	%
Loans from Huaneng Tiancheng Financial Leasing Co., Ltd. ("Tiancheng Financial Leasing")
Secured
RMB
- Variable rate		3,967,178		3,967,178		1,878,994		2,088,184		4.06%-4.51	%
Total				7,427,183		2,123,494		5,303,689

	As at 31 December 2016
	Original currency		RMB equivalent		Less: Current portion		Non current portion		Annual interest rate
		000
Loans from Huaneng Group
Unsecured
RMB
- Variable rate		665,015		665,015		640,485		24,530		4.75	%
Loans from HIPDC
Unsecured
RMB
- Variable rate		210		210		-		210		4.75	%
Loans from Huaneng Finance
Unsecured
RMB
- Variable rate		286,000		286,000		60,000		226,000		4.41%-4.75	%
Loans from Huaneng Tiancheng Financial Leasing
Secured
RMB
- Variable rate		2,867,582		2,867,582		154,737		2,712,845		4.42	%
Total				3,818,807		855,222		2,963,585

86

(b) Bank loans and other loans

Details of bank loans and other loans are as follows:

	As at 31 December 2017
	Original currency	RMB equivalent	Less: Current portion	Non current portion	Annual interest rate
	000
Secured
RMB
- Fixed rate	7,080,379	7,080,379	1,213,150	5,867,229	4.41%-4.90%
- Variable rate	4,117,055	4,117,055	657,231	3,459,824	4.66%-4.90%
Unsecured
RMB
- Fixed rate	14,981,859	14,981,859	3,179,426	11,802,433	2.00%-5.00%
- Variable rate	76,467,082	76,467,082	10,013,829	66,453,253	1.80%-6.03%
US$
- Variable rate	347,676	2,271,785	418,163	1,853,622	1.74%/2.26%
S$
- Variable rate	2,538,619	12,396,329	419,570	11,976,759	2.73%/4.25%
€
- Fixed rate	30,463	237,680	67,207	170,473	1.30%-2.15%
JPY
- Fixed rate	2,592,661	150,064	6,388	143,676	0.75%
Total		117,702,233	15,974,964	101,727,269

	As at 31 December 2016
	Original currency	RMB equivalent	Less: Current portion	Non current portion	Annual interest rate
	000
Secured
RMB
- Fixed rate	8,305,310	8,305,310	1,202,430	7,102,880	4.41%-4.90%
- Variable rate	760,500	760,500	56,800	703,700	4.66%-4.90%
Unsecured
RMB
- Fixed rate	15,896,017	15,896,017	2,515,343	13,380,674	2.65%-5.00%
- Variable rate	30,095,494	30,095,494	4,270,910	25,824,584	4.17%-5.65%
US$
- Variable rate	409,760	2,842,505	388,925	2,453,580	1.92%
S$
- Variable rate	2,580,522	12,385,213	196,410	12,188,803	2.76%/4.25%
€
- Fixed rate	39,187	286,329	68,271	218,058	2.00%/2.15%
JPY
- Fixed rate	2,702,533	161,071	6,574	154,497	0.75%
Total		70,732,439	8,705,663	62,026,776

As at 31 December 2017, long-term loans of RMB4,605 million (31 December 2016: RMB2,902 million) were secured by certain property, plant and equipment with net book value amounting to approximately RMB5,167 million (31 December 2016: RMB3,105 million).

Thereinto, certain subsidiaries of the Company had the sales and leaseback agreements with Tiancheng Financial Leasing and other financial leasing companies in previous years. According to the agreements, these subsidiaries have an option to buy back the equipment at a nominal price (RMB1) when the lease term expires. The substance of the transaction was to obtain financing secured by relevant assets within the leasing period. As at 31 December 2017, the equipment mentioned above has a total carrying amount of RMB4,064 million and RMB1,103 million (31 December 2016: RMB2,999 million and RMB0 million) while the long-term borrowings is RMB3,967 million and RMB638 million (31 December 2016: RMB2,868 million and RMB0 million) from Tiancheng Financial Leasing and other financial leasing companies, respectively.

87

As at 31 December 2017, long-term loans of approximately RMB10,559 million were secured by future electricity and heat revenue (31 December 2016: RMB9,032 million).

The maturity of long-term loans is as follows:

	Loans from Huaneng Group and its subsidiaries				Bank loans and other loans
	As at 31 December				As at 31 December
	2017		2016		2017		2016
			RMB '000				RMB '000
1 year or less		2,123,494		855,222		15,974,964		8,705,663
More than 1 year but no more than 2 years		1,689,582		715,400		19,039,483		11,420,746
More than 2 years but no more than 3 years		1,281,082		953,082		18,624,576		11,081,242
More than 3 years but no more than 4 years		294,020		928,082		16,388,976		7,769,955
More than 4 years but no more than 5 years		728,225		232,021		11,927,930		7,618,953
More than 5 years		1,310,780		135,000		35,746,304		24,135,880
		7,427,183		3,818,807		117,702,233		70,732,439
Less: amount due within 1 year included under current liabilities		2,123,494		855,222		15,974,964		8,705,663
Total		5,303,689		2,963,585		101,727,269		62,026,776

The interest payment schedule of long-term loans in the future years are summarized as follows:

	As at 31 December
	2017		2016
1 year or less		5,071,743		2,987,045
More than 1 year but not more than 2 years		4,225,736		2,577,363
More than 2 years but not more than 5 years		7,903,397		4,912,222
More than 5 years		4,864,084		3,133,578
Total		22,064,960		13,610,208

25 Long-term bonds

The Company issued bonds with maturity of 5 years, 7 years and 10 years in December 2007 with face values of RMB1 billion, RMB1.7 billion and RMB3.3 billion bearing annual interest rates of 5.67%, 5.75% and 5.90%, respectively. The total actual proceeds received by the Company were approximately RMB5.885 billion. These bonds are denominated in RMB and issued at par. Interest is payable annually while principal will be paid when the bonds fall due. The annual effective interest rates of those bonds are 6.13%, 6.10% and 6.17%, respectively. Interest paid per annum during the tenure of the bonds is RMB57 million, RMB98 million and RMB195 million, respectively. The bond with original maturity of 5 years had matured in December 2012 and the Company repaid the principal of RMB1 billion. The bond with original maturity of 7 years had matured in December 2014 and the Company repaid the principal of RMB1.7 billion. The bond with original maturity of 10 years had matured in December 2017 and the Company repaid the principal of RMB3.3 billion.

The Company also issued bonds with maturity of 10 years in May 2008 with a face value of RMB4 billion bearing an annual interest rate of 5.20%. The actual proceeds received by the Company were approximately RMB3.933 billion. These bonds are denominated in RMB and issued at par. Interest is payable annually while principal will be paid when the bonds fall due. The annual effective interest rate of bond is 5.42%. Interest paid per annum during the tenure of the bonds is RMB208 million. As at 31 December 2017, interest payable for these bonds amounted to approximately RMB135.06 million (31 December 2016: RMB135.06 million).

88

The Company issued medium-term notes with maturity of 5 years in July 2014 with a face value of RMB4 billion bearing an annual interest rate of 5.30%. The actual proceeds received by the Company were approximately RMB3.988 billion. These notes are denominated in RMB and issued at par. Interest is payable annually while principal will be paid when the notes fall due. The annual effective interest rate of these notes is 5.37%. Interest paid per annum during the tenure of the notes is RMB212 million. As at 31 December 2017, interest payable for the bonds amounted to approximately RMB99.32 million (31 December 2016: RMB99.32 million).

The Company issued corporate bonds with maturity of 5 years and 10 years in June 2016 with face values of RMB3 billion and RMB1.2 billion bearing annual interest rates of 3.48% and 3.98%, respectively. The total actual proceeds received by the Company were approximately RMB4.2 billion. These bonds are denominated in RMB and issued at par. Interest is payable annually while principal will be paid when the bonds fall due. The annual effective interest rates of those bonds are 3.48% and 3.98%, respectively. Interest paid per annum during the tenure of the bonds is RMB104.40 million and RMB47.76 million, respectively. As at 31 December 2017, interest payable for the bonds amounted to approximately RMB57.78 million (31 December 2016: RMB57.78 million) and RMB26.43 million (31 December 2016: RMB26.43 million), respectively.

The Company issued medium-term notes with maturity of 5 years in July 2017 with a face value of RMB5 billion bearing an annual interest rate of 4.69%. The actual proceeds received by the Company were approximately RMB5 billion. These notes are denominated in RMB and issued at par. Interest is payable annually while principal will be paid when the notes fall due. The annual effective interest rate of those notes is 4.69%. Interest paid per annum during the tenure of the notes is RMB234.50 million. As at 31 December 2017, interest payable for the notes amounted to approximately RMB111.15 million.

The Company issued debt financing instrument with maturity of 3 years in July 2017 with a face value of RMB500 million bearing an annual interest rate of 4.75%. The actual proceeds received by the Company were approximately RMB499 million. These bonds are denominated in RMB and issued at par. Interest is payable annually while principal will be paid when the bonds fall due. The annual effective interest rate of those bonds is 4.82%. Interest paid per annum during the tenure of the bonds is RMB23.75 million. As at 31 December 2017, interest payable for the bonds amounted to approximately RMB11.02 million.

The Company issued corporate bonds with maturity of 3 years in November 2017 with a face values of RMB2.3 billion bearing an annual interest rates of 4.99%. The actual proceeds received by the Company were approximately RMB2.299 billion. These bonds are denominated in RMB and issued at par. Interest is payable annually while principal will be paid when the bonds fall due. The annual effective interest rate of those bonds is 4.99%. Interest paid per annum during the tenure of the bonds is RMB114.77 million, respectively. As at 31 December 2017, interest payable for the bonds amounted to approximately RMB17.61 million.

Please refer to Note 36(c) for details of long-term bonds of the Company guaranteed by HIPDC and government-related banks.

89

26 Other non-current liabilities

	As at 31 December
	2017			2016
Finance lease payables(a)		1,600,106			1,088,846
Government grants
-Environmental subsidies(b)		1,245,810			1,122,406
-Other government grants		179,226			174,216
Other deferred income		1,825,614			379,615
Others		969,052			870,597
Subtotal		5,819,808			3,635,680
Current portion of finance lease payables		(470,985	)		(568,645	)
Current portion of other non-current liabilities		(64,361	)		(247,537	)
Subtotal		(535,346	)		(816,182	)
Total		5,284,462			2,819,498

(a) The Company and its subsidiaries had obligation under finance leases as follows:

	As at 31 December
	2017		2016
Within 1 year		500,790		605,806
After 1 year but within 2 years		312,125		266,792
After 2 years but within 3 years		281,990		82,470
After 3 years		674,256		181,345
		1,769,161		1,136,413
Less: total future interest expense		169,055		47,567
Total		1,600,106		1,088,846

(b) This primarily represented subsidies for the construction of desulphurization equipment and other environmental protection projects.

(c) In 2017, the asset-related government grants which were credited to the statement of comprehensive income amounted to RMB140.13 million (2016: RMB102.21 million).

90

27 Accounts payable and other liabilities

Accounts payable and other liabilities comprised:

	As at 31 December
	2017		2016
Accounts and notes payable		15,496,475		12,059,004
Payables to contractors for construction		14,491,632		10,832,444
Retention payables to contractors		2,008,106		1,445,383
Amounts received in advance		1,504,926		365,887
Accrued interests		947,302		676,462
Others		4,451,691		3,367,437
Total		38,900,132		28,746,617

Please refer to Note 36(a)(iv) for details of accounts payable and other liabilities due to the related parties.

As at 31 December 2017 and 2016, there was no notes payable secured by notes receivable.

The carrying amounts of financial liabilities (excluding amounts received in advance) included in accounts payable and other liabilities are denominated in the following currencies:

	As at 31 December
	2017		2016
RMB		36,399,243		27,222,632
S$ (RMB equivalent)		556,881		669,797
US$ (RMB equivalent)		436,358		479,179
JPY (RMB equivalent)		2,469		6,917
EUR (RMB equivalent)		255		2,205
Total		37,395,206		28,380,730

The ageing analysis of accounts and notes payable was as follows:

	As at 31 December
	2017		2016
Within 1 year		15,201,380		11,902,522
Between 1 to 2 years		196,082		100,092
Over 2 years		99,013		56,390
Total		15,496,475		12,059,004

28 Taxes payable

Taxes payable comprises:

	As at 31 December
	2017		2016
VAT payable		619,329		439,304
Income tax payable		430,703		440,791
Others		252,178		209,010
Total		1,302,210		1,089,105

91

29 Short-term bonds

The Company issued unsecured super short-term bonds with face values of RMB3 billion and RMB3 billion bearing annual interest rates of 2.50% and 2.60% in August 2016 and October 2016. Such bonds are denominated in RMB, issued at par and mature in 365 days. The annual effective interest rates of these bonds are 2.91% and 3.01%.The bonds had matured and were fully repaid in August 2017 and October 2017 respectively.

The Company issued unsecured super short-term bonds with face values of RMB4 billion, RMB3 billion, RMB3 billion, RMB4 billion, RMB2 billion, RMB3 billion and RMB2 billion bearing annual interest rates of 2.42%, 2.62%, 2.73%, 2.50%, 2.79%, 2.98% and 3.45% in April 2016, April 2016, May 2016, July 2016, November 2016, November 2016 and December 2016, respectively. Such bonds are denominated in RMB, issued at face value and mature in 270 days, 270 days, 270 days, 270 days, 270 days, 180 days and 270 days from the issuance dates. The annual effective interest rates of these bonds are 2.73%, 2.93%, 3.04%, 2.81%, 3.10%, 3.19%, and 3.78%, respectively. These bonds were fully repaid in January 2017, January 2017, February 2017, April 2017, August 2017, May 2017, and September 2017, respectively.

The Company issued unsecured super short-term bonds with face values of RMB4 billion RMB3 billion, RMB3 billion RMB4 billion, RMB2 billion, RMB4 billion, RMB4 billion, RMB2 billion, RMB1 billion and RMB4 billion bearing annual interest rates of 3.40%, 3.67%, 3.60%, 3.60%, 4.19%, 3.96% 4.10%, 4.19%, 4.17% and 4.17% in January 2017, February 2017, March 2017, April 2017, June 2017, August 2017, October 2017, November 2017, November 2017 and December 2017, respectively. Such bonds are denominated in RMB, issued at face value and mature in 270 days, 270days, 180 days, 90 days, 150 days, 60 days, 180 days, 180 days, 180 days and 90 days from the issuance dates. The annual effective interest rates of these bonds are 3.85%, 3.76%, 3.76%, 3.68%, 4.24%, 4.00%, 4.22%, 4.35%, 4.19%, and 4.35%, respectively. The six bonds issued in January 2017, February 2017, March 2017, April 2017, June 2017 and August 2017 were fully repaid in October 2017, November 2017, September 2017, July 2017, November 2017 and October 2017, respectively. As at 31 December 2017, interest payables for the outstanding bonds amounted to approximately RMB33.70 million, RMB10.80 million, RMB4.57 million and RMB14.17 million, respectively.

30 Short-term loans

Short-term loans are as follows:

	As at 31 December 2017							As at 31 December 2016
	Original currency		RMB equivalent		Annual interest rate			Original currency		RMB equivalent		Annual interest rate
	'000							'000
Secured
RMB
- Fixed rate		24,000		24,000		4.71%-5.50	%		13,500		13,500		3.00	%
- Variable rate		-		-					112,034		112,034		2.77%-3.80	%
Unsecured
RMB
- Fixed rate		10,450,248		10,450,248		3.92%-4.35	%		3,319,947		3,319,947		3.70%-4.35	%
- Variable rate		69,777,100		69,777,100		3.74%-4.35	%		54,223,393		54,223,393		3.57%-4.35	%
Total				80,251,348							57,668,874

As at 31 December 2017, short-term loans of RMB24million (31 December 2016: RMB126 million) represented the notes receivable that were discounted with recourse. As these notes receivable had not yet matured, the proceeds received were recorded as short-term loans.

92

As at 31 December 2017, a short-term loan borrowed from Xi'an Thermal Power Research Institute Co., Ltd ("Xi'an Thermal") amounted to RMB100 million (31 December 2016: 100 million) with annual interest rate of 4.13%(31 December 2016: 3.92%).

As at 31 December 2017, short-term loans borrowed from Huaneng Finance amounted to RMB6,505 million (31 December 2016: RMB3,355 million) with annual interest rate ranged from 3.92% to 4.35%(31 December 2016: from 3.92% to 4.13%).

As at 31 December 2017, short-term loans borrowed from a subsidiary of Huaneng Energy & Communications Holdings Co., Ltd. amounted to RMB753 million (31 December 2016: RMB0 million) with annual interest rate ranged from 3.92% to 4.13%(31 December 2016:nil).

31 Deferred income tax assets and liabilities

The deferred income tax assets and liabilities are as follows:

	As at 31 December
	2017			2016
Deferred income tax assets before offsetting		3,604,577			2,432,552
Offset amount		(1,304,486	)		(1,168,595	)
Deferred income tax assets after offsetting		2,300,091			1,263,957
Deferred income tax liabilities before offsetting		(5,871,166	)		(3,431,347	)
Offset amount		1,304,486			1,168,595
Deferred income tax liabilities after offsetting		(4,566,680	)		(2,262,752	)
		(2,266,589	)		(998,795	)

The gross movement on the deferred income tax accounts is as follows:

	2017			2016			2015
Beginning of the year		(998,795	)		(1,429,752	)		(926,481	)
Business combination (Note 40)		(2,322,513	)		(58,929	)		(1,007,147	)
Disposal of subsidiaries (Note 6)		17,407			-			-
Credited to profit or loss (Note 33)		724,712			440,817			687,206
Charged to other comprehensive income		330,834			87,775			(198,525	)
Currency translation differences		(18,234	)		(38,706	)		15,195
End of the year		(2,266,589	)		(998,795	)		(1,429,752	)

93

The movements in deferred income tax assets and liabilities during the year, without taking into consideration the offsetting of balances within the same tax jurisdictions, are as follows:

Deferred income tax assets:

	Hedging reserve			Amortization of land use rights			Provision for impairment loss			Depreciation			Accrued expenses		VAT refunds on purchases of domestically manufactured equipment			Unused tax losses			Others			Total
As at 1 January 2016		199,876			14,417			399,418			572,379			40,938		230,442			235,984			696,403			2,389,857
Business combination		-			-			66,560			6,840			-		-			-			-			73,400
(Charged)/credited to profit or loss		-			(502	)		140,969			(41,015	)		1,185		(25,433	)		(5,128	)		71,610			141,686
Charged to other comprehensive income		(182,400	)		-			-			-			-		-			-			-			(182,400	)
Currency translation differences		-			-			207			-			-		-			132			9,670			10,009
As at 31 December 2016		17,476			13,915			607,154			538,204			42,123		205,009			230,988			777,683			2,432,552
Business combination(Note 40)		-			-			-			574,600			5,052		-			139,387			414,891			1,133,930
Disposal of subsidiaries(Note 6)		-			-			(10,686	)		(9,962	)		-		-			(5,566	)		(52,270	)		(78,484	)
(Charged)/credited to profit or loss		-			(493	)		(2,593	)		(70,209	)		7,076		(25,433	)		196,613			20,026			124,987
Charged to other comprehensive income		(11,905	)		-			-			-			-		-			-			-			(11,905	)
Currency translation differences		-			-			82			-			-		-			-			3,415			3,497
As at 31 December 2017		5,571			13,422			593,957			1,032,633			54,251		179,576			561,422			1,163,745			3,604,577

94

Deferred income tax liabilities:

	Hedging reserve			Fair value gains			Amortization of land use rights			Depreciation			Power generation license			Mining rights			Territorial water use right			Others			Total
As at 1 January 2016		-			(645,242	)		(904,173	)		(1,291,706	)		(625,460	)		(157,215	)		(74,201	)		(121,612	)		(3,819,609	)
Business combination		-			-			(10,423	)		-			-			-			-			(121,906	)		(132,329	)
Credited to profit or loss		-			-			24,948			169,088			-			27,832			1,769			75,494			299,131
(Charged)/credited to other comprehensive loss		(26,530	)		296,705			-			-			-			-			-			-			270,175
Currency translation differences		8,131			-			(1,507	)		(26,436	)		(28,903	)		-			-			-			(48,715	)
As at 31 December 2016		(18,399	)		(348,537	)		(891,155	)		(1,149,054	)		(654,363	)		(129,383	)		(72,432	)		(168,024	)		(3,431,347	)
Business combination (Note 40)		-			(1,736	)		(148,129	)		(3,209,672	)		-			-			-			(96,906	)		(3,456,443	)
Disposal of subsidiaries(Note 6)		-			-			1,761			22,162			-			-			68,696			3,272			95,891
Credited to profit or loss		-			-			27,457			525,780			-			-			1,327			45,161			599,725
(Charged)/credited to other comprehensive loss		(5,558	)		348,297			-			-			-			-			-			-			342,739
Currency translation differences		(304	)		-			(540	)		(9,490	)		(11,397	)		-			-			-			(21,731	)
As at 31 December 2017		(24,261	)		(1,976	)		(1,010,606	)		(3,820,274	)		(665,760	)		(129,383	)		(2,409	)		(216,497	)		(5,871,166	)

95

As at 31 December 2017 and 2016, taxable temporary differences relating to interest in equity method investees amounted to RMB2.95 billion and RMB3.39 billion, respectively. No deferred tax liabilities were recognized as at 31 December 2017 and 2016 as dividends from investments in associates and joint ventures are exempted from the PRC income tax and the Company has no plan to dispose any of these investees in the foreseeable future.

As at 31 December 2017 and 2016, taxable temporary differences relating to the undistributed profit of a wholly-owned foreign subsidiary amounted to RMB3.06 billion and RMB3.54 billion, respectively. No deferred tax liabilities were recognized in respect of the tax that would be payable on the distribution of these retained profit as at 31 December 2017 and 2016 as the Company controls the dividend policy of the subsidiary, and it has been determined that it is probable that the profits will not be distributed in the foreseeable future.

In accordance with the accounting policy set out in Note 2(u), the Company and its subsidiaries did not recognize deferred income tax assets in respect of certain deductible temporary differences and accumulated tax losses that can be carried forward against future taxable income as follow:

	As at 31 December
	2017		2016
Deductible temporary differences		4,672,788		2,957,316
Unused tax losses		8,665,079		6,669,820
Total		13,337,867		9,627,136

The expiry dates of the tax losses of the Company and its subsidiaries for which no deferred income tax assets were recognized are summarized as follows:

	As at 31 December
	2017		2016
Year of expiry
2017		-		1,841,365
2018		1,557,045		1,122,070
2019		1,579,066		1,195,811
2020		1,524,531		1,061,468
2021		1,558,573		1,449,106
2022		2,445,864		-
Total		8,665,079		6,669,820

32 Additional financial information to the consolidated statements of financial position

As at 31 December 2017, the net current liabilities of the Company and its subsidiaries amounted to approximately RMB107,413 million (2016: RMB93,230 million). On the same date, total assets less current liabilities were approximately RMB240,639 million (2016: RMB184,643 million).

96

33 Income tax expense

	For the year ended 31 December
	2017			2016			2015
Current income tax expense		1,942,238			3,905,968			6,386,149
Deferred income tax (Note 31)		(724,712	)		(440,817	)		(687,206	)
Total		1,217,526			3,465,151			5,698,943

No Hong Kong profits tax has been provided as there were no estimated assessable profits in Hong Kong for the year (2016: nil).

The reconciliation of the effective income tax rate from the notional income tax rate is as follows:

	For the year ended 31 December
	2017			2016			2015
Notional tax on profit before income tax expense, calculated at the applicable income tax rates in the countries concerned		26.13	%		25.16	%		25.11	%
Effect of tax losses not recognized		18.45	%		1.58	%		(0.12	%)
Effect of deductible temporary differences not recognized		6.04	%		(0.20	%)		(0.16	%)
Effect of non-taxable income		(12.37	%)		(2.89	%)		(1.77	%)
Effect of non-deductible expenses		7.05	%		1.09	%		1.37	%
Others		(1.84	%)		0.35	%		0.39	%
Effective tax rate		43.46	%		25.09	%		24.82	%

The Company and its PRC branches and subsidiaries are subject to income tax at 25%, except for certain PRC branches and subsidiaries that are tax exempted or taxed at preferential tax rates, as determined in accordance with the relevant PRC income tax rules and regulations for the years ended 31 December 2017 and 2016.

Pursuant to Guo Shui Han [2009] No. 33, starting from 1 January 2008, the Company and its PRC branches calculate and pay income tax on a consolidated basis according to relevant tax laws and regulations. The original regulation specifying locations for power plants and branches of the Company to make enterprise income tax payments was abolished. The income tax of subsidiaries remains to be calculated individually based on their individual operating results.

The income tax rate applicable to Singapore subsidiaries is 17% (2016: 17%).

34 Earnings per share

The basic earnings per share is calculated by dividing the consolidated net profit attributable to the equity holders of the Company by the weighted average number of the Company's outstanding ordinary shares during the year:

97

	2017		2016		2015
Consolidated net profit attributable to equity holders of the Company		1,579,836		8,520,427		13,651,933
Less: cumulative distribution of perpetual corporate bonds		68,600		-		-
Consolidated net profit attributable to ordinary Shareholders of the Company		1,511,236		8,520,427		13,651,933
Weighted average number of the Company's outstanding ordinary shares ('000)*		15,200,383		15,200,383		14,485,383
Basic and diluted earnings per share (RMB)		0.10		0.56		0.94

*Weighted average number of ordinary shares:

	2017		2016		2015
	'000		'000		'000
Issued ordinary shares at 1 January		15,200,383		15,200,383		14,420,383
Effect of share issue		-		-		65,000
Weighted average number of
ordinary shares at 31 December		15,200,383		15,200,383		14,485,383

There was no dilutive effect on earnings per share since the Company had no dilutive potential ordinary shares for the years ended 31 December 2017 and 2016.

35 Notes to consolidated statement of cash flows

Bank balances and cash comprised the following:

	As at 31 December
	2017		2016		2015
Total bank balances and cash		9,364,823		7,881,630		7,537,813
Less: Restricted cash		82,433		71,129		59,563
Cash and cash equivalents as at year end		9,282,390		7,810,501		7,478,250

The bank balances and cash of the Company and its subsidiaries are denominated in the following currencies:

	As at 31 December
	2017		2016		2015
RMB		8,213,100		6,691,911		5,847,363
S$ (RMB equivalent)		835,995		869,591		1,130,356
US$ (RMB equivalent)		315,535		319,944		559,761
JPY (RMB equivalent)		193		184		205
HK$ (RMB equivalent)		-		-		128
Total		9,364,823		7,881,630		7,537,813

98

There is no material non-cash investing and financing transactions for the years ended 31 December 2017 and 2016.

The table below details changes in the Company and its subsidiaries' liabilities from financing activities, including both cash and non-cash changes. Liabilities arising from financing activities are liabilities for which cash flows were, or future cash flows will be, classified in the Company and its subsidiaries' consolidated cash flow statement as cash flows from financing activities:

Items		Loans (Note 24,30)			Bonds (Note 25,29)			Accrued interests (Note 27)			Finance leases payables (Note 26)			Interest rate swaps contracts (liabilities) (Note 14)
As at 1 January 2017			132,220,120			42,788,810			676,462			1,088,846			169,201
(a)	Business combination		47,562,251			-			85,380			521,083			-
(b)	Changes from financing cash flows:
	Proceeds from new bank loans		140,270,455			-			-			-			-
	Repayment of bank loans		(113,769,036	)		-			-			-			-
	Proceeds from new bonds		-			38,788,679			-			-			-
	Repayment of bonds		-			(50,300,000	)		-			-			-
	Capital element of finance lease rentals paid		-			-			-			(636,145	)		-
	Interest element of finance lease rentals paid		-			-			-			(58,874	)		-
	Interest paid		-			(885,000	)		(9,195,102	)		-			-
	Others		(3,135	)		(80,643	)		-			-			-
(c)	Exchange adjustments		82,298			-			2,095			235			-
(d)	Changes in fair value		-			-			-			-			(38,558	)
(e)	Other changes:
	New finance leases		-			-			-			659,895			-
	Interest expenses		-			747,377			8,902,402			99,225			-
	Capitalised borrowing costs		-			-			476,065			-			-
	Disposal of subsidiaries		(1,166,899	)		-			-			-			-
	Others		184,710			-			-			(74,159	)		-
As at 31 December 2017			205,380,764			31,059,223			947,302			1,600,106			130,643

99

36 Related party balances and transactions

The related parties of the Company and its subsidiaries that had transactions with the Company and its subsidiaries are as follows:

Names of related parties	Nature of relationship
Huaneng Group	Ultimate parent company
HIPDC	Parent company
Huaneng Energy & Communications Holdings Co., Ltd. and its subsidiaries	Subsidiaries of Huaneng Group*
Huaneng Property Co., Ltd. and its subsidiaries	Subsidiaries of Huaneng Group
Xi'an Thermal and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Group Technology Innovation Center	A subsidiary of Huaneng Group
Huaneng Hulunbuir Energy Development Company Ltd.and its subsidiaries	Subsidiaries of Huaneng Group
Alltrust Insurance Co., Ltd.	A subsidiary of Huaneng Group
North United Power Co., Ltd. and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Group Clean Energy Technology Research Institute Co., Ltd.	A subsidiary of Huaneng Group
Huaneng Renewables Corporation Limited and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Carbon Assets Management Company Limited	A subsidiary of Huaneng Group
Huaneng Group Hong Kong LimitedCompany	A subsidiary of Huaneng Group
Huaneng Lancangjiang Hydropower Co., Inc. and its subsidiaries	Subsidiaries of Huaneng Group
Changping Huaneng Training Center	A subsidiary of Huaneng Group
Huaneng Hainan Industry Co.,Ltd.	A subsidiary of Huaneng Group
Huaneng Baishan Coal Gangue Power Generation Co., Ltd.	A subsidiary of Huaneng Group
Great Wall Securities Co., Ltd. ("Great Wall Securities")	A subsidiary of Huaneng Group
Huaneng Nuclear Power Development Company Ltd.	A subsidiary of Huaneng Group
Huaneng Tibet Yarlung Zangbo River Hydropower Development & Investment Company Ltd. and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Xining Power Co., Ltd.	A subsidiary of Huaneng Group
Huaneng Coal Business Sector Co., Ltd. and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Integrated Industries Co., Ltd.	A subsidiary of Huaneng Group
Huaneng Ningxia Energy Company Ltd.	A subsidiary of Huaneng Group
Huaneng Shaanxi Power Generation Limited and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Xinjiang Energy Development Company Ltd. and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Gansu Energy Development Company Ltd. and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Capital Services Co., Ltd.	A subsidiary of Huaneng Group
Huaneng Shaanxi Qinling Power Generation Co., Ltd.	A subsidiary of Huaneng Group
Ningxia Daba Power Generation Co., Ltd.	A subsidiary of Huaneng Group
Huaneng Shandong Shidao Bay Nuclear Power Co., Ltd.	A subsidiary of Huaneng Group
Huangtai #8 Power Plant	An investee with significant influence
Shanghai Time Shipping	A joint venture of the Company
Jiangsu Nantong Power	A joint venture of the Company
Huaneng Yingkou Port Limited Liability Company	A joint venture of the Company
Luyi Power	A joint venture of the Company
Ruyi (Hong Kong) Energy and its subsidiaries	Joint ventures of the Company
Suzhou Sugao Renewables Service Co. Ltd.	A joint venture of the Company
Liaocheng Luxi Fuel Co., Ltd.Company	An associate of the Company
Zhengzhou Airport Xinggang Power Co., Ltd.	An associate of the Company

100

Names of related parties	Nature of relationship
Chongqing Huaneng Lime Company Limited	An associate of the Company
Hainan Nuclear	An associate of the Company
Sichuan Hydropower	An associate of the Company and also a subsidiary of Huaneng Group
Hanfeng Power	An associate of the Company and also a subsidiary of Huaneng Group
Tiancheng Financial Leasing	An associate of the Company and also a subsidiary of Huaneng Group
Huaneng Shidao Bay Nuclear Power Development Co., Ltd.	An associate of the Company and also a subsidiary of Huaneng Group
Xiapu Nuclear Power Co., Ltd.	An associate of the Company and also a subsidiary of Huaneng Group
Huaneng Finance	An associate of the Company and also a subsidiary of Huaneng Group
Huaneng (Tianjing) Coal Gasification Power Generation Co., Ltd.	An associate of the Company and also a subsidiary of Huaneng Group
Huaneng Group Fuel Company and its subsidiaries	Associates of the Company and also subsidiaries of Huaneng Group
Other government-related enterprises**	Related parties of the Company

* Transactions with subsidiaries of Huaneng Group which also are associates of the Company and its subsidiaries are presented as transactions with subsidiaries of Huaneng Group for note 36(a) and 36(b).

** Huaneng Group is a state-owned enterprise. In accordance with the revised IAS 24, "Related Party Disclosures", government-related enterprises, other than entities under Huaneng Group, which the PRC government has control, joint control or significant influence over are also considered as related parties of the Company and its subsidiaries ("other government-related enterprises").

The majority of the business activities of the Company and its subsidiaries are conducted with other government-related enterprises. For the purpose of the related party balances and transactions disclosure, the Company and its subsidiaries have established procedures to determine, to the extent possible, the identification of the ownership structure of its customers and suppliers as to whether they are government-related enterprises. However, many government-related enterprises have a multi-layered corporate structure and the ownership structures change over time as a result of transfers and privatization programs. Nevertheless, management believes that all material related party balances and transactions have been adequately disclosed.

In addition to the related party information shown elsewhere in these financial statements, the following is a summary of significant related party transactions entered into in the ordinary course of business between the Company and its subsidiaries and their related parties during the year and significant balances arising from related party transactions as at year end.

101

(a) Related party balances

(i) Cash deposits in related parties

	As at 31 December
	2017		2016
Deposits in Huaneng Finance
- Savings deposit		7,506,706		5,155,000
Deposits in Great Wall Securities
- Savings deposit		-		2
Total		7,506,706		5,155,002

For the year ended 31 December 2017, the annual interest rates for these savings deposits placed with Huaneng Finance and Great Wall Securities ranged from 0.35% to 1.35% (2016: from 0.35% to 1.35%).

(ii) As described in Note 24 and 30, certain loans of the Company and its subsidiaries were borrowed from Huaneng Group, HIPDC, Huaneng Finance, Xi'an Thermal, a subsidiary of Huaneng Energy & Communications Holdings Co., Ltd. and Tiancheng Financial Leasing.

(iii) Except for those disclosed in Note 24 and 30, the majority of the balances with Huaneng Group, HIPDC, subsidiariesof Huaneng Group, associates, joint ventures and other related parties are unsecured and within one year. As at and for the years ended 31 December 2017 and 2016, no provision is made on receivable balances from these parties.

Accounts receivable, other receivables and assets comprised the following balances due from related parties:

	As at 31 December
	2017		2016
Due from Huaneng Group		860,941		708
Due from HIPDC		99		-
Due from joint ventures		360,442		806,112
Due from associates		89,083		-
Due from subsidiaries of Huaneng Group		196,621		319,224
Due from Huangtai #8 Power Plant		903,671		-
Total		2,410,857		1,126,044

(iv) Accounts payable and other liabilities and other non-current liabilities comprised the following balances due to related parties:

	As at 31 December
	2017		2016
Due to Huaneng Group		260,306		12,232
Due to HIPDC		16,138		14,183
Due to joint ventures		336,170		325,590
Due to associates		5,751		263,154
Due to subsidiaries of Huaneng Group		4,239,688		4,145,595
Total		4,858,053		4,760,754

102

(v) As at 31 December 2017, included in long-term loans (including current portion) and short-term loans are loans payable to other government-related enterprises amounting to RMB203 billion (2016: RMB130 billion).

The balances with government-related enterprises also included substantially all the accounts receivable due from domestic power plants of government-related power grid companies, the bank deposits placed with government-related financial institutions as well as accounts payables and other payables arising from the purchases of coal and property, plant and equipment construction and related labor service provided by other government-related enterprises. Except for bank deposits, these balances are unsecured and the majority of receivable/repayable is within one year.

(vi) As at 31 December 2017, prepayment for construction materials to subsidiaries of Huaneng Group amounted to RMB21 million (2016: RMB67 million).

(b) Related party transactions

(i) Procurement of goods and receiving services

	For the year ended 31 December
	2017		2016		2015
Huaneng Group
Technical services and engineering contracting services		-		-		50
Other purchases		446		451		-
Subsidiaries of Huaneng Group
Purchase of coal and transportation services		19,945,752		17,212,984		16,575,700
Technical services and engineering contracting services		1,024,369		1,055,251		769,176
Purchase of equipment		347,163		483,058		302,387
Purchase of power generation quota		-		195,528		287,779
Other purchases		716		6,472		7,073
Joint ventures of the Company
Purchase of coal and transportation services		2,054,209		2,150,844		1,816,954
Entrusting other parties for power generation		28,953		-		-
An associate of the Company Other purchases		27,732		43,808		44,591

103

(ii) Sales of goods and providing services

	For the year ended 31 December
	2017		2016		2015
Huaneng Group
Service provided		907		-		-
HIPDC
Service provided		520		-		-
Subsidiaries of Huaneng Group
Sales of power generation quota		-		1,165		135,085
Sales of goods		1,114,347		-		-
Other sales		15,247		189,914		40,780
Service provided		25,229		31,135		50,627
Provision of entrusted power generation		58,639		-		-
Joint ventures of the Company
Service provided		319,844		59,049		133,332
Other sales		407,697		9,490		23,003
Other related party
Provision of entrusted power generation		-		-		33,129

(iii) Other related party transactions

			For the year ended 31 December
			2017		2016		2015
(1	)	Rental charge on leasehold
		HIPDC		106,885		157,264		161,941
		Subsidiaries of Huaneng Group		141,542		128,932		130,591
		A joint venture of the Company		2,128		-		-
(2	)	Rental income from leasehold
		A joint venture of the Company		7,448		7,750		10,759
		Subsidiaries of Huaneng Group		2,509		5,724		9,115
(3	)	Drawdown of loans
		Subsidiaries of Huaneng Group		15,374,480		4,035,000		2,660,500
		HIPDC		-		210		-
		Huaneng group		665,225		-		-
(4	)	Interest expense on loans
		Huaneng group		33,481		30,514		32,573
		HIPDC		10		13,136		114,687
		Subsidiaries of Huaneng Group		589,012		217,098		158,695
(5	)	Interest income on loans
		A joint venture of the Company		3,329		3,488		4,572
		An associate of the Company		917		-		-
		A Subsidiary of Huaneng Group		4,344		-		-

104

			For the year ended 31 December
			2017		2016		2015
(6	)	Capital injection from a subsidiary of Huaneng Group
		A subsidiary of Huaneng Group		274,752		-		286,312
(7	)	Capital injection
		A subsidiary of Huaneng Group		-		157,500		683,550
		An associate of the Company		52,200		100,418		206,230
		Joint ventures of the Company		249,716		18,200		-
(8	)	Pre-construction cost paid by
		A subsidiary of Huaneng Group		23,529		765		12,254
		An joint venture of the Company		179		-
(9	)	Finance lease payments received from
		A subsidiary of Huaneng Group		-		2,960,000		100,000
(10	)	Entrusted management fee
		Huaneng Group		13,453		24,950		24,950
(11	)	Trusteeship management income
		Huaneng Group		1,518		1,700		1,700
(12	)	Net proceeds received from investee with significant influence
		Huangtai #8 Power Plant		72,920		-		-
(13	)	Finance lease to investee with significant influence
		Huangtai #8 Power Plant		86,946		-		-
(14	)	Interest income from finance lease
		Huangtai #8 Power Plant		11,626		-		-
(15	)	Acquisition consideration
		In 2017, the Company acquired subsidiaries from Huaneng Group, please refer to Note 40(a) for details of the acquisition consideration.
(16	)	Disposal subsidiaries
		In 2017, the Company disposed Taishan Power Limited Company to a subsidiary of Huaneng Group, please refer to Note 6 for details.

Transactions with government-related enterprises

For the years ended 31 December 2017 and 2016, the Company and its domestic subsidiaries sold substantially all their products to local government-related power grid companies. Please refer to Note 5 for details of sales information to major power grid companies

For the years ended 31 December 2017 and 2016, other collectively-significant transactions with government-related enterprises also include a large portion of fuel purchases, property, plant and equipment construction and related labor employed.

105

(c) Guarantees

			As at 31 December
			2017		2016
(i	)	Long-term loans guaranteed by
		- Huaneng Group		1,675,147		565,992
		- HIPDC		2,099,600		2,142,000
(ii	)	Long-term bonds guaranteed by
		- HIPDC		4,000,000		4,000,000
		- Government-related banks		-		3,300,000

(d) Pre-tax benefits and social insurance of key management personnel

	For the year ended 31 December
	2017		2016		2015
Salaries		7,676		8,225		9,064
Pension		1,511		1,521		1,470
Total		9,187		9,746		10,534

(e) Related party commitments

Related party commitments which were contracted but not recognized in the consolidated statement of financial position as at the end of reporting period are as follows:

(i) Capital commitments

	As at 31 December
	2017		2016
Subsidiaries of Huaneng Group		290,041		439,571

(ii) Fuel purchase and transportation commitments

	As at 31 December
	2017		2016
Subsidiaries of Huaneng Group		1,111,649		963,306
A joint venture of the Company		279,408		291,032
Total		1,391,057		1,254,338

(iii) Operating lease commitments

	As at 31 December
	2017		2016
Subsidiaries of Huaneng Group		171,804		286,340
HIPDC		76,202		65,554
Total		248,006		351,894

106

37 Labor cost

Other than the salaries and staff welfare, the labor cost of the Company and its subsidiaries mainly comprises the following:

All PRC employees of the Company and its subsidiaries are entitled to a monthly pension upon their retirements. The PRC government is responsible for the pension liability to these employees on retirement. The Company and its subsidiaries are required to make contributions to the publicly administered retirement plan for their PRC employees at a specified rate, currently set at 14% to 22% (2016: 14% to 22%) of the basic salary of the PRC employees. The retirement plan contributions paid by the Company and its subsidiaries for the year ended 31 December 2017 were approximately RMB1156 million (2016: RMB873 million), including approximately RMB1110 million (2016: RMB832 million) charged to profit or loss.

In addition, the Company and its subsidiaries have also implemented a supplementary defined contribution retirement scheme for PRC employees. Under this scheme, the employees are required to make a specified contribution based on the number of years of service with the Company and its subsidiaries, and the Company and its subsidiaries are required to make a contribution equal to two to four times the employees' contributions. The employees will receive the total contributions upon their retirement. For the year ended 31 December 2017, the contributions to supplementary defined contribution retirement scheme paid by the Company and its subsidiaries amounted to approximately RMB312 million (2016: RMB244 million), including approximately RMB299 million (2016: RMB233 million) charged to profit or loss.

SinoSing Power and its subsidiaries in Singapore appropriate a specified rate, currently set at 6.5% to 16% (2016: 6.5% to 16%) of the basic salary to central provident funds in accordance with the local government regulations. The contributions made by SinoSing Power and its subsidiaries for the year ended 31 December 2017 amounted to approximately RMB19.92 million (2016: RMB18.47 million), all of which were charged to profit or loss.

The Company and its subsidiaries have no further obligation for post-retirement benefits beyond the annual contributions made above.

In addition, the Company and its subsidiaries also make contributions of housing funds and social insurance to the social security institutions at specified rates of the basic salary and no more than the upper limit. The housing funds and social insurance contributions paid by the Company and its subsidiaries amounted to approximately RMB784 million (2016: RMB604 million) and RMB901 million (2016: RMB699 million) for the year ended 31 December 2017 including approximately RMB748 million (2016: RMB572 million) and RMB857 million (2016: RMB664 million) were charged to profit or loss, respectively.

107

38 Directors', supervisors' and senior management's emoluments

(a) Pre-tax benefits and social insurance of directors and supervisors

The remuneration of every director and supervisor of the Company for the year ended 31 December 2017 is set out below:

	Fees	Basic salaries	Performance salaries	Pension	Total
Name of director
Mr. Cao Peixi	-	-	-	-	-
Mr. Guo Junming1	-	-	-	-	-
Mr. Liu Guoyue	-	-	-	-	-
Mr. Fan Xiaxia2	-	-	-	-	-
Mr. Li Shiqi3	-	-	-	-	-
Mr. Huang Jian	-	-	-	-	-
Mr. Wang Yongxiang4	-	-	-	-	-
Mr. Mi Dabin	24	-	-	-	24
Mr. Guo Hongbo	-	-	-	-	-
Mr. Zhu Yousheng3	24	-	-	-	24
Ms. Li Song3	24	-	-	-	24
Mr. Cheng Heng4	-	-	-	-	-
Mr. Lin Chong4	-	-	-	-	-
Mr. Li Zhensheng3	37	-	-	-	37
Mr. Yue Heng	74	-	-	-	74
Mr. Geng Jianxin3	37	-	-	-	37
Mr. Xia Qing3	37	-	-	-	37
Mr. Xu Mengzhou	74	-	-	-	74
Mr. Liu Jizhen4	37	-	-	-	37
Mr. Xu Haifeng4	37	-	-	-	37
Mr. Zhang Xianzhi4	37	-	-	-	37
Sub-total	442	-	-	-	442
Name of supervisor
Mr. Ye Xiangdong	-	-	-	-	-
Mr. Mu Xuan	24	-	-	-	24
Ms. Zhang Mengjiao	-	-	-	-	-
Mr. Gu Jianguo	24	-	-	-	24
Ms. Zhang Xiaojun	-	137	466	124	727
Mr. Zhu Daqing	-	135	464	123	722
Sub-total	48	272	930	247	1,497
Total	490	272	930	247	1,939

108

The remuneration of every director and supervisor of the Company for the year ended 31 December 2016 is set out below:

	Fees	Basic salaries	Performance salaries	Pension	Total
Name of director
Mr. Cao Peixi	-	-	-	-	-
Mr. Guo Junming	-	-	-	-	-
Mr. Liu Guoyue	-	-	-	-	-
Mr. Li Shiqi	-	-	-	-	-
Mr. Huang Jian	-	-	-	-	-
Mr. Fan Xiaxia	-	327	396	122	845
Mr. Mi Dabin	48	-	-	-	48
Mr. Guo Hongbo	-	-	-	-	-
Mr. Zhu Yousheng	48	-	-	-	48
Ms. Li Song	48	-	-	-	48
Mr. Li Zhensheng	74	-	-	-	74
Mr. Zhang Shouwen	37	-	-	-	37
Mr. Yue Heng	74	-	-	-	74
Mr. Geng Jianxin	74	-	-	-	74
Mr. Xia Qing	74	-	-	-	74
Mr. Xu Mengzhou	37	-	-	-	37
Sub-total	514	327	396	122	1,359
Name of supervisor
Mr. Ye Xiangdong	-	-	-	-	-
Mr. Mu Xuan	48	-	-	-	48
Ms. Zhang Mengjiao	-	-	-	-	-
Mr. Gu Jianguo	48	-	-	-	48
Mr. Wang Zhaobin	-	51	-	-	51
Ms. Zhang Ling	-	69	-	-	69
Ms. Zhang Xiaojun	-	92	314	89	495
Mr. Zhu Daqing	-	90	313	88	491
Sub-total	96	302	627	177	1,202
Total	610	629	1,023	299	2,561

109

The remuneration of every director and supervisor of the Company for the year ended 31 December 2015 is set out below:

	Fees	Basic salaries	Performance salaries	Pension	Total
Name of director
Mr. Cao Peixi	-	-	-	-	-
Mr. Guo Junming	-	-	-	-	-
Mr. Liu Guoyue	-	143	663	123	929
Mr. Li Shiqi	-	-	-	-	-
Mr. Huang Jian	-	-	-	-	-
Mr. Fan Xiaxia	-	356	494	131	981
Mr. Mi Dabin	65	-	-	-	65
Mr. Guo Hongbo	12	-	-	-	12
Mr. Zhu Yousheng	24	-	-	-	24
Mr. Xu Zujian	24	-	-	-	24
Ms. Li Song	65	-	-	-	65
Mr. Li Zhensheng	74	-	-	-	74
Mr. Qi Yudong	6	-	-	-	6
Mr. Zhang Shouwen	74	-	-	-	74
Mr. Yue Heng	100	-	-	-	100
Ms. Zhang Lizi	30	-	-	-	30
Mr. Geng Jianxin	37	-	-	-	37
Mr. Xia Qing	37	-	-	-	37
Sub-total	548	499	1,157	254	2,458
Name of supervisor
Mr. Ye Xiangdong	-	-	-	-	-
Mr. Mu Xuan	65	-	-	-	65
Ms. Zhang Mengjiao	-	-	-	-	-
Mr. Gu Jianguo	49	-	-	-	49
Mr. Wang Zhaobin	-	298	385	103	786
Ms. Zhang Ling	-	133	263	53	449
Sub-total	114	431	648	156	1,349
Total	662	930	1,805	410	3,807

1 Resigned on 9 October 2017.

2 Resigned on 28 February 2018

3 Resigned on 13 June 2017.

4 Appointed on 13 June 2017.

During the year, no option was granted to the directors or the supervisors (2016: nil).

During the year, no emolument was paid to the directors or the supervisors (including the five highest paid employees) as an inducement to join or upon joining the Company or as compensation for loss of office (2016: nil).

No director or supervisor had waived or agreed to waive any emoluments during the years 2017 and 2016.

110

(b) Five highest paid individuals

The five individuals whose emoluments were the highest in the Company and its subsidiaries for the year include no director (2016: one director) whose emoluments are reflected in the analysis presented above. The emoluments payable to the all five (2016: remaining four) individuals during the year (within the range of nil to RMB0.79 million) are as follows:

	As at 31 December
	2017		2016		2015
Basic salaries		1,524		1,213		910
Performance salaries		1,800		1,440		1,260
Pension		648		502		365
		3,972		3,155		2,535

39 Commitments

(a) Capital commitments

Capital commitments mainly relate to the construction of new power projects, certain ancillary facilities and renovation projects for existing power plants. Details of such commitments are as follows:

	As at 31 December
	2017		2016
Contracted but not provided		16,985,439		18,603,559

(b) Operating lease commitments

The Company and its subsidiaries have various operating lease arrangements for land and buildings. Some of the leases contain renewal options and most of the leases contain escalation clauses. Lease terms do not contain restrictions on the Company and its subsidiaries' activities concerning dividends, additional debts or further leasing.

Total future minimum lease payments under non-cancelable operating leases are as follows:

	As at 31 December
	2017		2016
Land and buildings
- not later than 1 year		196,870		181,441
- later than 1 year and not later than 2 years		118,272		144,088
- later than 2 years and not later than 5 years		143,628		133,984
- later than 5 years		1,028,014		970,896
Total		1,486,784		1,430,409

111

In addition, in accordance with a 30-year operating lease agreement signed by Huaneng Dezhou Power Plant ("Dezhou Power Plant") and Shandong Land Bureau for the land occupied by Dezhou Power Plant Phases I and II in June 1994, annual rental amounted to approximately RMB30 million effective from June 1994 and is subject to revision at the end of the fifth year from the contract date. Thereafter, the annual rental is subject to revision once every three years. The increment for each rental revision is restricted to no more than 30% of the previous annual rental amount. For the years ended 31 December 2017 and 2016, the annual rentals was approximately RMB34 million.

(c) Fuel purchase commitments

The Company and its subsidiaries have entered into various long-term fuel supply agreements with various suppliers in securing fuel supply for various periods. All the agreements require minimum, maximum or forecasted volume purchases and subject to certain termination provisions. Related purchase commitments are as follows:

			As at 31 December 2017
	Periods		Purchase quantities	Estimated unit costs (RMB)
A government-related enterprise		2018-2039	2.8 million m3/day*		2.21/ m	3
A government-related enterprise		2018-2023	541 million m3/year*		2.06/ m	3
		2018-2023	450 million m3/year*		2.06/ m	3
		2018-2023	541 million m3/year*		2.10/ m	3
		2018-2023	450 million m3/year*		2.27/ m	3
A government-related enterprise		2018-2026	200 million m3/year*		2.38/ m	3
Other suppliers		2018-2019	243 BBtu**/day	approximately 67,000/BBtu
		2020-2021	242 BBtu**/day	approximately 67,000/BBtu
		2022	248 BBtu**/day	approximately 67,000/BBtu
		2023	247.5~256.6BBtu**/day	approximately 67,000/BBtu
		2024-2028	49.9-81.5BBtu**/day	approximately 69,000/BBtu
			As at 31 December 2016
	Periods		Purchase quantities	Estimated unit costs (RMB)
A government-related enterprise		2017-2039	2.8 million m3/day*		2.31/ m	3
A government-related enterprise		2017-2023	541 million m3/year*		2.16/ m	3
		2017-2023	450 million m3/year*		2.16/ m	3
Other suppliers		2017-2022	248BBtu**/day	approximately 63,000/BBtu
		2023	247.5-256.6BBtu**/day	approximately 63,000/BBtu
		2024-2028	49.9-59.0BBtu**/day	approximately 70,000/BBtu

112

*The quantities represent maximum volume, others represent minimum or forecasted volume if not specified.

**BBtu: Billion British Thermal Unit.

40 Business combinations

(a) Acquisition from Huaneng Group

On 14 October 2016, the Company entered into equity transfer agreements with Huaneng Group to acquire:

• 80% equity interests of Shandong Power

•100% equity interests of Jilin Power

•100% equity interests of Heilongjiang Power

• 90% equity interests of Zhongyuan Gas

These entities are all mainly engaged in power generation and sales business. The acquisition was completed on 1 January 2017(the acquisition date), when the Company obtained the control over above mentioned entities through the corresponding voting rights obtained and consolidated them in its financial statement. The acquisition is expected to increase its generation capacity in relevant areas. The acquired business contributed consolidated revenue of RMB31.207 billion and consolidated net loss of RMB1,051 million to the Company and its subsidiaries for the period from the date of acquisition to 31 December 2017.

The total consideration is RMB15.501 billion after certain adjustment of the profits generated from the date of valuation to the acquisition date in accordance with the equity transfer agreements, which has been settled in cash by 31 December 2017 after netting off with the receivables due from Huaneng Group.

	Acquisition Date
Total consideration		15,500,770
Non-controlling interests		6,292,577
Fair value of pre-existing interest in a subsidiary of Shandong Power		690,967
Less: Fair value of total identifiable net assets		19,316,748
Goodwill		3,167,566
Total consideration		15,500,770
Less: Net settlement of the receivables due from Huaneng Group		2,361,871
Bank balances and cash of acquirees		2,342,766
Less: Restricted cash		(20,974	)
Cash consideration paid for acquisition of subsidiaries, net of cash acquired		10,817,107

113

Goodwill arising from the acquisitions is attributable to the synergies expected to arise after the acquisitions of the equity interests in the subsidiaries stated above. None of the goodwill recognised is expected to be deductible for tax purposes.

In addition, according to the profit compensation agreement associated with the Acquisition, Huaneng Group should compensate the Company in cash based on the shortfall of accumulated actual net profit compared with the accumulated forecast net profit of certain subsidiaries of Shandong Power during the compensation period from year 2017 to 2019.

As at 31 December 2017, the fair value of above mentioned contingent consideration from Huaneng Group amounted to RMB860 million was recognized (as at acquisition date: nil), which was recorded in other receivables and assets of RMB615 million, and other non-current assets of RMB 245 million, respectively. The actual amount of compensation will be adjusted in line with the actual performance of those subsidiaries in 2018 and 2019.

The Company incurred acquisition related cost amounted RMB26 million for financial advisory, legal and audit fees.

114

The assets and liabilities arising from the acquisitions of above entities are as follows:

	Shandong Power (consolidated) Fair value	Jilin Power (consolidated) Fair value	Heilongjiang Power (consolidated) Fair value	Zhongyuan Gas Fair value
Property, plant and equipment	41,366,757	8,496,028	12,525,071	1,381,060
Investment in associates and joint ventures	1,021,566	-	-	-
Available-for-sale financial assets	4,000	100,895	-	-
Land use rights	2,272,181	228,173	655,485	27,075
Deferred income tax assets	334,055	323,522	10,404	-
Other non-current assets	1,285,838	213,589	210,965	48
Bank balances and cash	1,621,276	103,045	385,295	222,939
Inventories	952,510	89,333	123,889	1,136
Trade receivables	2,509,641	293,455	127,219	124,636
Other receivables and other current assets	2,992,094	2,393,835	889,392	119,974
Long-term borrowings	(15,647,367)	(8,330,929)	(6,742,580)	(1,200,000)
Deferred income tax liabilities	(2,447,672)	(214,642)	(280,945)	(47,235)
Other non-current liabilities	(1,688,306)	(10,291)	(253,671)	-
Short-term borrowings	(8,082,200)	(600,000)	(1,920,000)	-
Tax payables	(270,531)	(10,311)	(54,302)	(419)
Dividends payables	(136,955)	-	-	-
Salary and welfare payables	(41,667)	(2,969)	(22,462)	(717)
Payables and other liabilities	(9,725,591)	(2,668,626)	(3,083,130)	(606,115)
Total identifiable net assets	16,319,629	404,107	2,570,630	22,382

The fair value of the identifiable assets and liabilities acquired in the acquisition were assessed based on independent valuation prepared by external valuers.

115

(b) A subsidiary transferred from a joint venture

Shanxi Xiaoyi Economic Development Zone Huaneng Energy Service Co., Ltd. ('Shanxi Xiaoyi Energy') was previously a joint venture of the Company. In 2017, non-controlling shareholder with 49% equity interests in Shanxi Xiaoyi Energy entered into a voting in concert agreement with the Company whereby it agreed to vote the same in respect of significant financial and operating decisions made by the Company effective from 15 February 2017. As a result, the Company acquired control of Shanxi Xiaoyi Energy since 15 February 2017.

	Acquisition Date
Non-controlling interests		10
Fair value of pre-existing interest in Shanxi Xiaoyi Energy		10,200
Less: Fair value of total identifiable net assets		10,210
Goodwill		-

Shanxi Xiaoyi Energy is a limited liability company established on 8 October 2016 in Xiaoyi, Shanxi Province. Shanxi Xiaoyi Energy is primarily engaging in selling of electricity, construction, operation and maintenance of power distribution and regional transmission and distribution grid. Financial information of Shanxi Xiaoyi Energy is as follows:

	From acquisition date to 31 December 2017 acquiree's
	Revenue		Net Profit
Shanxi Xiaoyi Energy		704		228

The identifiable assets and liabilities of Shanxi Xiaoyi Energy as at the acquisition date are as follows:

	Fair Value
Bank balances and cash		10,211
Accounts payable and other liabilities		(1	)
Total identifiable net assets		10,210

116

(c) Acquisition of Ruzhou Xuji Wind Power Generation Co., Ltd.

The Company has entered an Agreement on establishing Huaneng Ruzhou Clean Energy Co., Ltd. ("Ruzhou Clean Energy") with Beijing Xuji New Energy Technology Co., Ltd. ("Beijing Xuji") in 2017. The Company committed to contribute RMB76 million for 95% equity of Ruzhou Clean Energy. Beijing Xuji contributed the net identifiable assets of its wholly-owned subsidiary, Ruzhou Xuji Wind Power Generation Co., Ltd. ("Xuji Wind Power") which amounted to RMB4 million, for 5% equity of Ruzhou Clean Energy.

	Acquisition Date
Consideration		4,000
Less: Fair value of total identifiable net assets		4,000
Goodwill		-

Xuji Wind Power was established on 23 November 2015 in Ruzhou, Henan Province, and is mainly engaged in wind power generation and photovoltaic power generation. On the acquisition date, the project is under construction. From the acquisition date to 31 December 2017, Xuji Wind Power had not commenced operation.

	From acquisition date to 31 December 2017 acquiree's
	Revenue		Net Profit
Xuji Wind Power		-		-

The identifiable assets and liabilities of Xuji Wind Power as at the acquisition date are as follows:

	Fair Value
Other receivables and assets		16,080
Property, plant and equipment		11,893
Accounts payable and other liabilities		(23,973	)
Total identifiable net assets		4,000

117

41 Non-controlling interests

The following table summarizes the information relating to each of the Company and subsidiaries that have material non-controlling interests ("NCI"):

	Qinbei Power			Beijing Cogeneration			Luohuang Power			Weihai Power			Jinling Power			Yueyang Power			Shidongkou Power			Yangliuqing Cogeneration			Shandong Power			Other individually immaterial subsidiaries			Total
NCI percentage		40%			59%			40%			40%			40%			45%			50%			45%			20%
31 December 2017
Non-current assets		10,553,775			6,841,918			4,055,507			4,664,868			5,049,079			4,875,004			3,712,623			2,541,803			47,665,952
Current assets		1,738,000			1,257,485			887,225			633,012			494,312			987,812			494,073			497,441			6,891,086
Non-current liabilities		(3,053,535	)		(394,590	)		(242,944	)		(81,048	)		(1,541,444	)		(1,042,093	)		(731,640	)		(205,205	)		(19,681,891	)
Current liabilities		(5,821,543	)		(2,501,516	)		(2,064,897	)		(2,462,363	)		(1,854,441	)		(2,590,470	)		(1,919,701	)		(869,071	)		(18,695,005	)
Net assets		3,416,697			5,203,297			2,634,891			2,754,469			2,147,506			2,230,253			1,555,355			1,964,968			16,180,142
Carrying amount of NCI		1,380,594			3,050,283			1,032,938			1,101,787			859,024			1,019,016			777,678			883,340			4,697,283			5,171,095			19,973,038
Revenue		4,587,612			4,262,547			2,303,079			3,421,115			3,423,688			3,149,190			2,117,052			2,010,872			22,566,737
Net (loss)/profit		(169,261	)		541,602			(60,758	)		324,335			269,949			47,224			164,557			121,853			(800,622	)
Total comprehensive (loss)/income		(169,261	)		541,602			(60,758	)		324,335			269,949			47,224			164,557			121,853			(943,860	)
(Loss)/profit allocated to NCI		(67,704	)		319,545			(24,303	)		129,734			107,980			21,251			82,278			54,834			(287,923	)		(331,321	)		4,371
Other comprehensive (loss)/income allocated to NCI		-			-			-			-			-			-			-			-			(28,648	)		152			(28,496	)
Cash flow from operating activities		970,585			1,071,888			195,282			681,568			731,714			426,437			311,668			334,842			3,848,712
Cash flow from investment activities		(252,441	)		(1,190,093	)		(383,004	)		(231,142	)		(47,518	)		(242,288	)		(93,434	)		(64,179	)		(3,967,060	)
Cash flow from financing activities		(613,010	)		70,299			156,483			(405,196	)		(680,226	)		(191,231	)		(384,317	)		(288,299	)		(282,625	)
Net increase/ (decrease) in cash and cash equivalents		105,134			(49,605	)		(31,239	)		45,230			3,970			(7,082	)		(166,083	)		(17,586	)		(402,950	)
Dividends paid to NCI		150,000			532,966			-			160,000			179,023			65,675			133,700			71,103			220,321

118

	Qinbei Power			Beijing Cogeneration			Luohuang Power			Weihai Power			Jinling Power			Yueyang Power			Shidongkou Power			Yangliuqing Cogeneration			Other individually immaterial subsidiaries		Total
NCI percentage		40%			59%			40%			40%			40%			45%			50%			45%
31 December 2016
Non-current assets		11,210,604			5,821,110			3,966,880			4,988,112			5,426,759			4,958,325			3,917,340			2,654,085
Current assets		1,472,192			1,041,957			864,069			508,493			649,446			826,089			380,641			563,023
Non-current liabilities		(2,206,586	)		(152,911	)		(284,064	)		(104,952	)		(1,773,332	)		(1,150,021	)		(1,055,640	)		(224,373	)
Current liabilities		(6,475,340	)		(1,665,750	)		(1,601,236	)		(2,504,410	)		(1,835,090	)		(1,828,581	)		(1,584,142	)		(991,614	)
Net assets		4,000,870			5,044,406			2,945,649			2,887,243			2,467,783			2,805,812			1,658,199			2,001,121
Carrying amount of NCI		1,614,264			2,928,015			1,157,242			1,154,897			987,135			1,260,591			829,099			899,609			5,352,890		16,183,742
Revenue		5,006,349			4,476,729			2,436,586			3,217,209			3,734,108			2,716,817			1,915,915			1,773,869
Net profit		457,311			788,899			122,508			507,900			655,568			243,913			297,211			177,447
Total comprehensive income		457,311			788,899			122,508			507,900			655,568			243,913			297,211			177,447
Profit allocated to NCI		182,924			465,450			49,003			203,160			262,227			109,761			148,606			79,851			326,578		1,827,560
Other comprehensive income allocated to NCI		-			-			-			-			-			-			-			-			484		484
Cash flow from operating activities		1,400,042			973,352			550,346			1,045,828			1,293,565			568,379			890,615			295,547
Cash flow from investment activities		(312,604	)		(540,151	)		(189,599	)		(273,117	)		(37,274	)		(62,622	)		(258,892	)		(197,600	)
Cash flow from financing activities		(1,247,836	)		(344,718	)		(319,643	)		(786,471	)		(1,255,955	)		(521,249	)		(462,075	)		(58,293	)
Net (decrease)/increase in cash and cash equivalents		(160,398	)		88,518			41,104			(13,760	)		336			(15,492	)		169,648			39,616
Dividends paid to NCI		433,090			687,679			120,000			366,983			308,923			-			273,900			128,857

119

42 Subsequent events

(a) After the end of the reporting period, the directors proposed a final dividend. Further details are disclosed in Note 23.

(b) On 28 September 2017, Huaneng Group entered into a guarantee agreement with Industrial and Commercial Bank of China Limited ("ICBC"), to provide guarantee amounted USD100 million for short-term loans of Huaneng Shandong Ruyi (Pakistan) Energy (Private) Ltd., a subsidiary of "Ruyi (Hong Kong) Energy", which is a joint venture of Shandong Power. According to the "Proposal of Shandong Power's takeover of the guarantee agreement for short-term loans of the Sahiwal Project in Pakistan". Shandong Power is expected to issue the confirmation letter upon the approval from the general meeting of shareholders, which officially confirms with ICBC, Huaneng Group and Shandong Ruyi Technology Group Co., Ltd. that it will take over the obligation of Huaneng Group under the aforementioned guarantee agreement thereon.

On January 30 2018, the first extraordinary general meeting of the Company approved the proposal. At the date on which financial statements were approved for issue, Shandong Power is in the process of takeover the guarantee agreement. Huaneng Group are still held responsible for the guarantee agreement before the confirmation letter is issued.

(c) The Company issued super short-term bonds with face value of RMB4 billion bearing annual interest rate of 4.35% in February 2018. The bonds are denominated in RMB and mature in 90 days, with a par value of RMB100.

The Company issued super short-term bonds with face value of RMB2 billion bearing annual interest rate of 4.35% in March 2018. The bonds are denominated in RMB and mature in 90 days, with a par value of RMB100.

(d) On 5 February 2018, the Public Offering Review Committee of the China Securities Regulatory Commission reviewed the application of the Company for the non-public issuance of A Shares. According to the review results, the Company's application for non-public issuance of A Shares was approved.

120

THIS PAGE IS INTENTIONALLY LEFT BLANK

121

Signature

The registrant hereby certifies that it meets all of the requirements for filing on Form 20-F and it has duly caused and authorized the undersigned to sign this annual report on its behalf.

Date: April 12, 2018	Huaneng Power International, Inc.
	By:	/s/Huang Chaoquan
	Name:	Huang Chaoquan
	Title:	Secretary to the Board

122

EX-8

Exhibit 8

List of Subsidiaries

A list of Huaneng Power International Inc.'s subsidiaries is in Note 9 to the consolidated financial statements included in this annual report following Item 19.

EX-12.1

Exhibit 12.1

CERTIFICATION

I, Peixi Cao, certify that:

1. I have reviewed this annual report on Form 20-F of Huaneng Power International, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Company as of, and for, the periods presented in this report;

4. The Company's other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the Company and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Company, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the Company's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by the report based on such evaluation; and

(d) Disclosed in this report any change in the Company's internal control over financial reporting that occurred during the period covered by the annual report that has materially affected, or is reasonably likely to materially affect, the Company's internal control over financial reporting; and

5. The Company's other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Company's auditors and the audit committee of the Company's board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Company's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the Company's internal control over financial reporting.

Date: April 12, 2018

By:	/s/ Peixi Cao
	Peixi Cao, Chairman (principal executive officer)

EX-12.2

Exhibit 12.2

CERTIFICATION

I, Lixin Huang, certify that:

1. I have reviewed this annual report on Form 20-F of Huaneng Power International, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Company as of, and for, the periods presented in this report;

4. The Company's other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the Company and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Company, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this annual report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the Company's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by the report based on such evaluation; and

(d) Disclosed in this report any change in the Company's internal control over financial reporting that occurred during the period covered by the annual report that has materially affected, or is reasonably likely to materially affect, the Company's internal control over financial reporting; and

5. The Company's other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Company's auditors and the audit committee of the Company's board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Company's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the Company's internal control over financial reporting.

Date: April 12, 2018

By:	/s/ Lixin Huang
	Lixin Huang, Chief Accountant (principal financial officer)

EX-13.1

Exhibit 13.1

Certification of CEO and CFO Pursuant to

18 U.S.C. Section 1350,

as Adopted Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Annual Report on Form 20-F of Huaneng Power International, Inc. (the "Company") for the year ended December 31, 2017 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), Peixi Cao, as Chairman of the Company, and Lixin Huang, as Chief Accountant of the Company, each hereby certifies, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that, to the best of their knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

By: /s/ Peixi Cao

Name: Peixi Cao

Title: Chairman (principal executive officer)

Date: April 12, 2018

By: /s/ Lixin Huang

Name: Lixin Huang

Title: Chief Accountant (principal financial officer)

Date: April 12, 2018

This certification accompanies the Report pursuant to Rule 13a-14(b) under the Exchange Act and 18 U.S.C. Section 1350, and shall not be deemed filed by the Company for purposes of §18 of the Exchange Act, or otherwise subject to the liability of that section.

A signed original of this written statement required by Section 906 has been provided to Huaneng Power International, Inc. and will be retained by Huaneng Power International, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Document and Entity Information	12 Months Ended
	Dec. 31, 2017 shares
Document Information [line items]
Document Type	20-F
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	FY
Entity Registrant Name	HUANENG POWER INTERNATIONAL INC
Entity Central Index Key	0000929058
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Current Reporting Status	Yes
Entity Well-known Seasoned Issuer	Yes
Trading Symbol	HNP
A shares [member]
Document Information [line items]
Entity Common Stock, Shares Outstanding	10,500,000,000
Overseas listed foreign shares [member]
Document Information [line items]
Entity Common Stock, Shares Outstanding	4,700,383,440

XML

Consolidated Statement of Comprehensive Income - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015
Consolidated Statements of Comprehensive Income [abstract]
Operating revenue	¥ 152,459,444	¥ 113,814,236	[1]	¥ 128,904,873	[1]
Tax and levies on operations	(1,376,312)	(1,177,818)		(1,157,760)
Operating expenses
Fuel	(92,737,304)	(56,617,542)		(59,242,367)
Maintenance	(4,347,723)	(4,343,349)		(4,556,361)
Depreciation	(20,180,830)	(14,815,620)		(14,411,632)
Labor	(10,590,084)	(8,043,406)		(7,751,551)
Service fees on transmission and transformer facilities of HIPDC	(95,894)	(138,038)		(140,771)
Purchase of electricity	(3,787,032)	(3,066,415)		(3,581,517)
Others	(10,160,875)	(7,234,308)		(8,919,988)
Total operating expenses	(141,899,742)	(94,258,678)		(98,604,187)
Profit from operations	9,183,390	18,377,740		29,142,926
Interest income	198,906	147,063		160,723
Financial expenses, net
Interest expense	(9,749,004)	(6,817,526)	[1]	(7,945,734)	[1]
Exchange gain/ (loss) and bank charges, net	144,359	(250,076)		(24,336)
Total financial expenses, net	(9,604,645)	(7,067,602)		(7,970,070)
Share of profits less losses of associates and joint ventures	425,215	1,298,889	[1]	1,525,975	[1]
Gain/ (loss) on fair value changes of financial assets/liabilities	856,786	(12,986)		(16,742)
Other investment income	1,742,081	1,070,034		115,238
Profit before income tax expense	2,801,733	13,813,138	[1]	22,958,050	[1]
Income tax expense	(1,217,526)	(3,465,151)	[1]	(5,698,943)	[1]
Net profit	1,584,207	10,347,987		17,259,107
Items that may be reclassified subsequently to profit or loss:
Fair value changes of available-for-sale financial assets	281,663	(148,041)		558,261
Gain on disposal of available-for-sale financial assets reclassified to profit or loss	(1,135,356)	(741,648)		0
Share of other comprehensive income/ (loss) of investees accounted for under the equity method	121,208	(180,572)		678,793
Effective portion of cash flow hedges	62,853	1,015,103		51,922
Translation differences of the financial statements of foreign operations	84,418	540,442		(133,116)
Other comprehensive (loss) /income, net of tax	(585,214)	485,284		1,155,860
Total comprehensive income	998,993	10,833,271		18,414,967
Net profit attributable to:
Equity holders of the Company	1,579,836	8,520,427		13,651,933
Non-controlling interests	4,371	1,827,560		3,607,174
Net profit	1,584,207	10,347,987		17,259,107
Total comprehensive income/ (loss) attributable to:
Equity holders of the Company	1,023,118	9,005,227		14,807,889
Non-controlling interests	(24,125)	1,828,044		3,607,078
Total comprehensive income	¥ 998,993	¥ 10,833,271		¥ 18,414,967
Earnings per share attributable to the equity holders of the Company (expressed in RMB per share)
Basic and diluted	¥ 0.10	¥ 0.56		¥ 0.94

[1] Restated. The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

XML

Consolidated Statement of Financial Position - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Non-current assets
Property, plant and equipment	¥ 284,328,093	¥ 223,061,809
Investments in associates and joint ventures	19,517,623	19,632,113
Investment property	217,406	0
Available-for-sale financial assets	1,604,993	3,406,032
Land use rights	11,264,785	8,456,347
Power generation licenses	3,916,246	3,849,199
Mining rights	1,646,271	1,646,271
Deferred income tax assets	2,300,091	1,263,957
Derivative financial assets	75,328	99,721
Goodwill	15,484,120	12,135,729
Other non-current assets	7,696,845	4,321,945
Total non-current assets	348,051,801	277,873,123
Current assets
Inventories	7,385,411	6,879,143
Other receivables and assets	6,081,517	5,533,770
Accounts receivable	25,447,595	16,393,471
Derivative financial assets	258,364	278,602
Bank balances and cash	9,364,823	7,881,630
Total current assets	48,537,710	36,966,616
Total assets	396,589,511	314,839,739	[1]
Capital and reserves attributable to equity holders of the Company [abstract]
Share capital	15,200,383	15,200,383
Perpetual corporate bonds	5,068,550	0
Capital surplus	24,114,400	24,760,331
Surplus reserves	8,140,030	8,140,030
Currency translation differences	(675,054)	(787,881)
Retained earnings	35,793,257	38,690,132
Capital and reserves attributable to equity holders of the Company	87,641,566	86,002,995
Non-controlling interests	19,973,038	16,183,742
Total equity	107,614,604	102,186,737
Non-current liabilities
Long-term loans	107,030,958	64,990,361
Long-term bonds	15,993,833	12,182,971
Deferred income tax liabilities	4,566,680	2,262,752
Derivative financial liabilities	148,486	201,169
Other non-current liabilities	5,284,462	2,819,498
Total non-current liabilities	133,024,419	82,456,751
Current liabilities
Accounts payable and other liabilities	38,900,132	28,746,617
Taxes payable	1,302,210	1,089,105
Dividends payable	1,735,426	1,575,180
Derivative financial liabilities	62,178	133,569
Short-term bonds	11,068,357	27,311,103
Short-term loans	80,251,348	57,668,874
Current portion of long-term loans	18,098,458	9,560,885
Current portion of long-term bonds	3,997,033	3,294,736
Current portion of other non-current liabilities	535,346	816,182
Total current liabilities	155,950,488	130,196,251
Total liabilities	288,974,907	212,653,002	[1]
Total equity and liabilities	¥ 396,589,511	¥ 314,839,739

[1] Restated. The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

XML

Consolidated Statement of Changes in Equity - CNY (¥) ¥ in Thousands	Share capital [member]	Perpetual corporate bonds [member]	Share premium [member]	Hedging reserve [member]	Available-for-sale financial assets revaluation reserve [member]	Other capital reserve [member]	Capital surplus [member]	Surplus reserve [member]	Currency translation differences [member]	Retained earnings [member]	Attributable to equity holders of the Company [member]	Non-controlling interests [member]	Total
Balance at period start at Dec. 31, 2014	¥ 14,420,383		¥ 18,322,575	¥ (1,091,109)	¥ 1,279,119	¥ 1,111,614	¥ 19,622,199	¥ 7,196,349	¥ (1,194,819)	¥ 30,085,379	¥ 70,129,491	¥ 14,653,215	¥ 84,782,706
Profit	0		0	0	0	0	0	0	0	13,651,933	13,651,933	3,607,174	17,259,107
Other comprehensive income/ (loss) :
Fair value changes of available-for-sale financial assets - gross	0		0	0	744,348	0	744,348	0	0	0	744,348	0	744,348
Fair value changes of and gain on disposal of available-for-sale financial assets - tax	0		0	0	(186,087)	0	(186,087)	0	0	0	(186,087)	0	(186,087)
Shares of other comprehensive income of investees - accounted for under the equity method - gross	0		0	0	904,007	0	904,007	0	0	0	904,007	0	904,007
Shares of other comprehensive income of investees - accounted for under the equity method - tax	0		0	0	(225,214)	0	(225,214)	0	0	0	(225,214)	0	(225,214)
Changes in fair value of effective portion of cash flow hedges - gross	0		0	(962,683)	0	0	(962,683)	0	0	0	(962,683)	0	(962,683)
Changes in fair value of effective portion of cash flow hedges - tax	0		0	166,135	0	0	166,135	0	0	0	166,135	0	166,135
Cash flow hedges recorded in shareholders' equity reclassified to inventories - gross	0		0	1,003,778	0	0	1,003,778	0	0	0	1,003,778	0	1,003,778
Cash flow hedges recorded in shareholders' equity reclassified to inventories - tax	0		0	(170,642)	0	0	(170,642)	0	0	0	(170,642)	0	(170,642)
Cash flow hedges recorded in shareholders' equity reclassified to exchange gain and bank charges, net - gross	0		0	(137,859)	0	0	(137,859)	0	0	0	(137,859)	0	(137,859)
Cash flow hedges recorded in shareholders' equity reclassified to exchange gain and bank charges, net - tax	0		0	23,436	0	0	23,436	0	0	0	23,436	0	23,436
Cash flow hedges recorded in shareholders' equity reclassified to interest expense - gross	0		0	161,124	0	0	161,124	0	0	0	161,124	0	161,124
Cash flow hedges recorded in shareholders' equity reclassified to interest expense - tax	0		0	(31,367)	0	0	(31,367)	0	0	0	(31,367)	0	(31,367)
Currency translation differences	0		0	0	0	0	0	0	(133,020)	0	(133,020)	(96)	(133,116)
Total comprehensive income	0		0	51,922	1,237,054	0	1,288,976	0	(133,020)	13,651,933	14,807,889	3,607,078	18,414,967
Business combinations (Note 40)	0		0	0	0	0	0	0	0	0	0	1,934,865	1,934,865
Issuance of new H shares, net of issuance expenses	780,000		3,904,314	0	0	0	3,904,314	0	0	0	4,684,314	0	4,684,314
Dividends relating to last year (Note 23)	0		0	0	0	0	0	0	0	(5,479,746)	(5,479,746)	(3,285,330)	(8,765,076)
Net capital injection from non-controlling interests of subsidiaries	0		0	0	0	0	0	0	0	0	0	623,107	623,107
Transfer to surplus reserve	0		0	0	0	0	0	943,681	0	(943,681)	0	0	0
Others	0		0	0	0	0	0	0	0	0	0	18,806	18,806
Balance at period end at Dec. 31, 2015	15,200,383		22,226,889	(1,039,187)	2,516,173	1,111,614	24,815,489	8,140,030	(1,327,839)	37,313,885	84,141,948	17,551,741	101,693,689
Profit	0		0	0	0	0	0	0	0	8,520,427	8,520,427	1,827,560	10,347,987
Other comprehensive income/ (loss) :
Fair value changes of available-for-sale financial assets - gross	0		0	0	(197,529)	0	(197,529)	0	0	0	(197,529)	0	(197,529)
Gain on disposal of available-for-sale financial assets reclassified to profit or loss - gross	0		0	0	(988,865)	0	(988,865)	0	0	0	(988,865)	0	(988,865)
Fair value changes of and gain on disposal of available-for-sale financial assets - tax	0		0	0	296,705	0	296,705	0	0	0	296,705	0	296,705
Shares of other comprehensive income of investees - accounted for under the equity method - gross	0		0	0	(242,217)	0	(242,217)	0	0	0	(242,217)	0	(242,217)
Shares of other comprehensive income of investees - accounted for under the equity method - tax	0		0	0	61,645	0	61,645	0	0	0	61,645	0	61,645
Changes in fair value of effective portion of cash flow hedges - gross	0		0	574,455	0	0	574,455	0	0	0	574,455	0	574,455
Changes in fair value of effective portion of cash flow hedges - tax	0		0	(95,407)	0	0	(95,407)	0	0	0	(95,407)	0	(95,407)
Cash flow hedges recorded in shareholders' equity reclassified to inventories - gross	0		0	603,527	0	0	603,527	0	0	0	603,527	0	603,527
Cash flow hedges recorded in shareholders' equity reclassified to inventories - tax	0		0	(102,600)	0	0	(102,600)	0	0	0	(102,600)	0	(102,600)
Cash flow hedges recorded in shareholders' equity reclassified to exchange gain and bank charges, net - gross	0		0	(55,838)	0	0	(55,838)	0	0	0	(55,838)	0	(55,838)
Cash flow hedges recorded in shareholders' equity reclassified to exchange gain and bank charges, net - tax	0		0	9,492	0	0	9,492	0	0	0	9,492	0	9,492
Cash flow hedges recorded in shareholders' equity reclassified to interest expense - gross	0		0	101,889	0	0	101,889	0	0	0	101,889	0	101,889
Cash flow hedges recorded in shareholders' equity reclassified to interest expense - tax	0		0	(20,415)	0	0	(20,415)	0	0	0	(20,415)	0	(20,415)
Currency translation differences	0		0	0	0	0	0	0	539,958	0	539,958	484	540,442
Total comprehensive income	0		0	1,015,103	(1,070,261)	0	(55,158)	0	539,958	8,520,427	9,005,227	1,828,044	10,833,271
Dividends relating to last year (Note 23)	0		0	0	0	0	0	0	0	(7,144,180)	(7,144,180)	(3,481,663)	(10,625,843)
Net capital injection from non-controlling interests of subsidiaries	0		0	0	0	0	0	0	0	0	0	285,620	285,620
Balance at period end at Dec. 31, 2016	15,200,383	¥ 0	22,226,889	(24,084)	1,445,912	1,111,614	24,760,331	8,140,030	(787,881)	38,690,132	86,002,995	16,183,742	102,186,737
Profit	0	68,600	0	0	0	0	0	0	0	1,511,236	1,579,836	4,371	1,584,207
Other comprehensive income/ (loss) :
Fair value changes of available-for-sale financial assets - gross	0	0	0	0	375,742	0	375,742	0	0	0	375,742	(50)	375,692
Gain on disposal of available-for-sale financial assets reclassified to profit or loss - gross	0	0	0	0	(1,581,994)	0	(1,581,994)	0	0	0	(1,581,994)	0	(1,581,994)
Fair value changes of and gain on disposal of available-for-sale financial assets - tax	0	0	0	0	352,646	0	352,646	0	0	0	352,646	(37)	352,609
Shares of other comprehensive income of investees - accounted for under the equity method - gross	0	0	0	0	162,858	0	162,858	0	0	0	162,858	0	162,858
Shares of other comprehensive income of investees - accounted for under the equity method - tax	0	0	0	0	(41,650)	0	(41,650)	0	0	0	(41,650)	0	(41,650)
Changes in fair value of effective portion of cash flow hedges - gross	0	0	0	85,558	0	0	85,558	0	0	0	85,558	0	85,558
Changes in fair value of effective portion of cash flow hedges - tax	0	0	0	(16,239)	0	0	(16,239)	0	0	0	(16,239)	0	(16,239)
Cash flow hedges recorded in shareholders' equity reclassified to inventories - gross	0	0	0	(109,817)	0	0	(109,817)	0	0	0	(109,817)	0	(109,817)
Cash flow hedges recorded in shareholders' equity reclassified to inventories - tax	0	0	0	18,669	0	0	18,669	0	0	0	18,669	0	18,669
Cash flow hedges recorded in shareholders' equity reclassified to exchange gain and bank charges, net - gross	0	0	0	(2,657)	0	0	(2,657)	0	0	0	(2,657)	0	(2,657)
Cash flow hedges recorded in shareholders' equity reclassified to exchange gain and bank charges, net - tax	0	0	0	452	0	0	452	0	0	0	452	0	452
Cash flow hedges recorded in shareholders' equity reclassified to interest expense - gross	0	0	0	107,233	0	0	107,233	0	0	0	107,233	0	107,233
Cash flow hedges recorded in shareholders' equity reclassified to interest expense - tax	0	0	0	(20,346)	0	0	(20,346)	0	0	0	(20,346)	0	(20,346)
Currency translation differences	0	0	0	0	0	0	0	0	112,827	0	112,827	(28,409)	84,418
Total comprehensive income	0	68,600	0	62,853	(732,398)	0	(669,545)	0	112,827	1,511,236	1,023,118	(24,125)	998,993
Business combinations (Note 40)	0	0	0	0	0	0	0	0	0	0	0	6,292,577	6,292,577
Issue of perpetual corporate bonds (Note 21)	0	4,999,950	0	0	0	0	0	0	0	0	4,999,950	0	4,999,950
Dividends relating to last year (Note 23)	0	0	0	0	0	0	0	0	0	(4,408,111)	(4,408,111)	(2,344,391)	(6,752,502)
Net capital injection from non-controlling interests of subsidiaries	0	0	0	0	0	0	0	0	0	0	0	846,847	846,847
Disposal of non-controlling interests of a subsidiary	0	0	28,054	0	0	0	28,054	0	0	0	28,054	(28,054)	0
Acquisition of non-controlling interests of a subsidiary	0	0	(4,440)	0	0	0	(4,440)	0	0	0	(4,440)	(86,699)	(91,139)
Disposal of subsidiaries (Note 6)	0	0	0	0	0	0	0	0	0	0	0	(866,859)	(866,859)
Balance at period end at Dec. 31, 2017	¥ 15,200,383	¥ 5,068,550	¥ 22,250,503	¥ 38,769	¥ 713,514	¥ 1,111,614	¥ 24,114,400	¥ 8,140,030	¥ (675,054)	¥ 35,793,257	¥ 87,641,566	¥ 19,973,038	¥ 107,614,604

XML

Consolidated Statement of Cash Flows - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES
Profit before income tax expense	¥ 2,801,733	¥ 13,813,138	[1]	¥ 22,958,050	[1]
Adjustments to reconcile profit before income tax expense to net cash provided by operating activities:
Depreciation	20,180,830	14,815,620		14,411,632
Provision for impairment loss on property, plant and equipment	1,046,195	1,063,735		1,047,641
Provision for impairment loss on investment in an associate	0	0		178,131
Provision for impairment loss on goodwill	0	0		1,105,649
Provision for impairment loss on mining rights	0	0		760,296
Provision for impairment loss on land use rights	108,590	51,981		0
Provision for other non-current assets	5,008	0		0
Amortization of land use rights	341,125	225,707		213,206
Amortization of other non-current assets	113,878	121,388		92,775
Amortization of employee housing subsidies	653	866		940
Recognition/ (reversal) of provision for doubtful accounts	27,682	89,498		(3,392)
(Reversal) /recognition of provision for inventory obsolescence	(263)	(256)		1,828
(Gain) /Loss on fair value changes of financial assets/liabilities	(856,786)	12,986		16,742
Other investment income	(1,742,081)	(1,070,034)		(115,238)
Net loss on disposals of non-current assets	616,456	590,049		438,321
Unrealized exchange (gain) /loss, net	(157,056)	195,055		166,148
Share of profits less losses of associates and joint ventures	(425,215)	(1,298,889)		(1,525,975)
Interest income	(198,906)	(147,063)		(160,723)
Interest expense	9,749,004	6,817,526		7,945,734
Others	171,611	(213,089)		(89,332)
Changes in working capital, net of effects of acquisitions:
Inventories	714,045	(1,270,582)		2,106,821
Other receivables and assets	(199,023)	(20,810)		72,925
Accounts receivable	(6,201,149)	(838,272)		(175,429)
Restricted cash	9,670	(11,566)		499,899
Accounts payable and other liabilities	2,414,376	1,912,034		(2,856,958)
Taxes payable	2,543,863	1,279,505		1,366,209
Interest received	136,134	84,806		102,813
Income tax expense paid	(2,003,011)	(4,692,509)		(6,196,005)
Net cash provided by operating activities	29,197,363	31,510,824		42,362,708
CASH FLOWS FROM INVESTING ACTIVITIES
Payment for the purchase of property, plant and equipment	(25,798,009)	(20,144,903)		(24,191,285)
Proceeds from disposal of property, plant and equipment, land use rights and other non-current assets	286,609	144,346		109,013
Prepayments of land use rights	(213,928)	(89,430)		(136,045)
Payment for the purchase of other non-current assets	(33,498)	(50,653)		(6,981)
Cash dividends received	1,419,380	1,057,642		937,189
Payment for investment in associates and joint ventures	(301,916)	(276,118)		(889,780)
Cash paid for acquiring available-for-sale financial assets	(5,600)	0		0
Cash consideration paid for acquisition of subsidiaries, net of cash acquired	(10,817,107)	157,421		(8,887,882)
Cash received from disposal of a subsidiary, net of cash of the subsidiaries	530,437	0		0
Cash received from disposal of available-for-sale financial assets	2,186,758	1,474,301		0
Others	998,049	77,748		50,759
Net cash used in investing activities	(31,748,825)	(17,649,646)		(33,015,012)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuance of short-term bonds	30,988,679	32,982,340		18,980,000
Repayments of short-term bonds	(47,000,000)	(25,000,000)		(18,000,000)
Proceeds from short-term loans	107,564,128	85,689,874		67,298,044
Repayments of short-term loans	(96,378,054)	(77,904,489)		(62,600,955)
Proceeds from long-term loans	32,706,327	15,978,023		9,943,689
Repayments of long-term loans	(17,390,982)	(20,702,421)		(12,799,719)
Issuance of long-term bonds	7,800,000	4,200,000		0
Repayments of long-term bonds	(3,300,000)	(11,500,000)		(5,000,000)
Interest paid	(10,080,102)	(7,344,781)		(8,677,316)
Net proceeds from the issuance of new H shares	0	0		4,684,314
Net proceeds from the issuance of perpetual corporate bonds	4,999,950	0		0
Net capital injection from non-controlling interests of subsidiaries	838,084	285,620		623,107
Dividends paid to shareholders of the Company	(4,352,973)	(7,206,220)		(5,535,655)
Dividends paid to non-controlling interests of subsidiaries	(2,184,145)	(2,695,378)		(2,954,194)
Proceeds from sales leaseback classified as finance lease	0	0		100,000
Government grants	590,629	233,276		322,011
Payment for finance leasing	(695,019)	(571,485)		0
Others	(93,342)	(46,209)		(523,985)
Net cash generated from/ (used in) financing activities	4,013,180	(13,601,850)		(14,140,659)
Effect of exchange rate fluctuations on cash held	10,171	72,923		32,846
NET INCREASE/ (DECREASE) IN CASH AND CASH EQUIVALENTS	1,471,889	332,251		(4,760,117)
Cash and cash equivalents as at beginning of the year	7,810,501	7,478,250		12,238,367
CASH AND CASH EQUIVALENTS AS AT END OF THE YEAR	¥ 9,282,390	¥ 7,810,501		¥ 7,478,250

[1] Restated. The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

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Company organization and principal activities

12 Months Ended

Dec. 31, 2017

Company organization and principal activities [abstract]

Company organization and principal activities

1 Company organization and principal activities

Huaneng Power International, Inc. (the "Company") was incorporated in the People's Republic of China (the "PRC") as a Sino-foreign joint stock limited company on 30 June 1994. The registered address of the Company is Huaneng Building, 6 Fuxingmennei Street, Xicheng District, Beijing, the PRC. The Company and its subsidiaries are principally engaged in the generation and sale of electric power to the respective regional or provincial grid companies in the PRC and in the Republic of Singapore ("Singapore"). The Company conducts its business in Singapore through SinoSing Power Pte Ltd. ("SinoSing Power") and its subsidiaries.

The directors consider Huaneng International Power Development Corporation ("HIPDC") and China Huaneng Group Co., Ltd. ("Huaneng Group") as the parent company and ultimate parent company of the Company, respectively. Both HIPDC and Huaneng Group are incorporated in the PRC. HIPDC does not produce financial statements available for public use.

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Principal accounting policies

12 Months Ended

Dec. 31, 2017

Principal accounting policies [abstract]

Principal accounting policies

2 Principal accounting policies

The principal accounting policies adopted in the preparation of these financial statements are set out below. These policies have been consistently applied to all the years presented, unless otherwise stated.

(a) Basis of preparation

These financial statements have been prepared in accordance with International Financial Reporting Standards ("IFRS") as issued by the International Accounting Standards Board (the "IASB"). These financial statements have been prepared under the historical cost convention, as modified by the revaluation of available-for-sale financial assets, financial assets at fair value through profit or loss and derivative financial assets and liabilities.

The preparation of financial statements in conformity with IFRS requires the use of certain critical accounting estimates. It also requires management to exercise its judgment in the process of applying the Company and its subsidiaries' accounting policies. The areas involving a higher degree of judgment or complexity, or areas where assumptions and estimates are significant to the financial statements are disclosed in Note 4.

As at 31 December 2017, the Company and its subsidiaries have net current liabilities of approximately RMB107.4 billion, and a portion of the Company and its subsidiaries' funding requirements for capital expenditures were satisfied by short-term financing. Taking into consideration of the expected operating cash flows of the Company and its subsidiaries and the undrawn available banking facilities of approximately RMB241.9 billion as at 31 December 2017, the Company and its subsidiaries are expected to refinance certain of its short-term loans and bonds and also to consider alternative sources of financing, where applicable and when needed.

Therefore, the directors of the Company are of the opinion that the Company and its subsidiaries will be able to meet its liabilities as and when they fall due within the next twelve months and accordingly, these consolidated financial statements are prepared on a going concern basis.

The IASB has issued several amendments to IFRSs that are first effective for the current accounting period of the Company and its subsidiaries. None of these developments have had a material effect on how the Company and its subsidiaries' results and financial position for the current or prior periods have been prepared or presented. However, additional disclosure has been included in Note 35 to satisfy the new disclosure requirements introduced by the amendments to IAS 7, Statement of cash flows: Disclosure initiative, which require entities to provide disclosures that enable users of financial statements to evaluate changes in liabilities arising from financing activities, including both changes arising from cash flows and non-cash changes. The Company and its subsidiaries have not applied any new standard or interpretation that is not yet effective for current accounting period.

(b) Consolidation

The consolidated financial statements include the financial statements of the Company and all of its subsidiaries.

Subsidiaries are investees over which the Company and its subsidiaries have the power to exercise control. The Company and its subsidiaries control an entity when it is exposed, or have rights to variable returns from their involvement with the entity and have the ability to affect those returns through their power over the entity. In assessing whether the Company and its subsidiaries have power, only substantive rights (held by the Company and its subsidiaries and other parties) are considered.

Subsidiaries are consolidated from the date when control is transferred to the Company and its subsidiaries. They are de-consolidated from the date when control ceases. Intra-group balances, transactions and cash flows, and any unrealised income and expenses arising from intra-group transactions, are eliminated in full in preparing the consolidated financial statements. Unrealised gains arising from transactions with equity accounted investees are eliminated against the investment to the extent of the Company and its subsidiaries' interest in the investee. Unrealised losses are eliminated in the same way as unrealised gains, but only to the extent that there is no evidence of impairment. The portion of the shareholders' equity of the subsidiaries, which is not attributable directly or indirectly to the parent company, is separately presented as non-controlling interests in the shareholders' equity in the consolidated financial statements.

When there is any inconsistency on the accounting policies or financial period adopted between subsidiaries and the Company, the financial statements of subsidiaries are adjusted according to the accounting policies or financial period adopted by the Company.

(i) Business combinations

The acquisition method is used to account for the business combinations of the Company and its subsidiaries (including business combinations under common controls). The consideration transferred for the acquisition of a subsidiary is the fair values of the assets transferred, the liabilities incurred to the former owners of the acquiree and the equity interests issued by the Company and its subsidiaries. Any contingent consideration is measured at fair value at the date of acquisition. If an obligation to pay contingent consideration that meets the definition of a financial instrument is classified as equity, then it is not remeasured and settlement is accounted for within equity. Otherwise, other contingent consideration is remeasured at fair value at each reporting date and subsequent changes in the fair value of the contingent consideration are recognised in profit or loss. Acquisition-related costs are expensed as incurred. Identifiable assets acquired and liabilities and contingent liabilities assumed in a business combination are measured initially at their fair values at the acquisition date. On an acquisition-by-acquisition basis, the Company and its subsidiaries recognize any non-controlling interests in the acquiree either at fair value or at the non-controlling interest's proportionate share of the recognized amounts of acquiree's identifiable net assets. The excess of the consideration transferred, the amount of any non-controlling interest in the acquiree and the acquisition-date fair value of any previous equity interest in the acquiree over the fair value of the identifiable net assets acquired is recorded as goodwill (Note 2(i)). If this consideration is lower than the fair value of the net assets of the subsidiary acquired, the difference is recognized in profit or loss.

(ii) Changes in ownership interests in subsidiaries

Transactions with non-controlling interests that do not result in loss of control are accounted for as equity transactions - that is, as transactions with the equity owners in their capacity as owners. The difference between fair value of any consideration paid and the relevant share acquired of the carrying value of net assets of the subsidiary is recorded in equity. Gains or losses on disposals to non-controlling interests are also recorded in equity.

When the Company and its subsidiaries lose control of a subsidiary, it is accounted for as a disposal of the entire interest in that subsidiary, with a resulting gain or loss being recognized in profit or loss. Any interest retained in that former subsidiary at the date when control is lost is recognized at fair value and this amount is regarded as the fair value on initial recognition of a financial asset (Note 2(k)) or, when appropriate, the cost on initial recognition of an investment in an associate or joint venture (Note 2(b)(iii)).

(iii) Associates and joint ventures

Associates are investees over which the Company and its subsidiaries have significant influence on the financial and operating decisions. A joint venture is an arrangement whereby the Company and its subsidiaries and other parties contractually agree to share control of the arrangement, and have rights to the net assets of the arrangement.

Investments in associates and joint ventures are initially recognized at cost and are subsequently measured using the equity method of accounting, unless it is classified as held for sale (or included in a disposal group that is classified as held for sale). The excess of the initial investment cost over the proportionate share of the fair value of identifiable net assets of investee acquired is included in the initial investment cost (Note 2(i)). Any shortfall of the initial investment cost to the proportionate share of the fair value of identifiable net assets of investee acquired is recognized in current period profit or loss and long-term investment cost is adjusted accordingly.

When applying equity method, the Company and its subsidiaries adjust net profit or loss of the investees, including the fair value adjustments on the net identifiable assets of the associates and joint ventures and the adjustments to align with the accounting policies of the Company and the Company's financial reporting periods. Current period investment income is then recognized based on the proportionate share of the Company and its subsidiaries in the investees' net profit or loss. Net losses of investees are recognized to the extent of the carrying value of long-term equity investments and any other constituting long-term equity investments in investees that in substance form part of the investments in the investees. The Company and its subsidiaries continue to recognize investment losses and provision if they bear additional obligations which meet the recognition criteria.

The Company and its subsidiaries adjust the carrying amount of the investment and directly recognize into related other comprehensive income based on their proportionate share on the movements of the investees' other comprehensive income.

When the investees appropriate profit or declare dividends, the carrying value of long-term equity investments are reduced correspondingly by the proportionate share of the distribution.

The Company and its subsidiaries determine at each reporting date whether there is any objective evidence that the investment in the associate or the joint venture is impaired. If this is the case, the Company and its subsidiaries calculate the amount of impairment as the difference between the recoverable amount of the associate or the joint venture and its carrying value and recognize the amount in the consolidated statement of comprehensive income.

Profits or losses resulting from transactions between the Company and its subsidiaries and the associates and joint ventures are recognized in the Company and its subsidiaries' financial statements only to the extent of the unrelated third party investor's interests in the associates and joint ventures. Loss from transactions between the Company and its subsidiaries and the associates and joint ventures is fully recognized and not eliminated when there is evidence for asset impairment.

If an investment in an associate becomes an investment in a joint venture or vice versa, retained interest is not remeasured. Instead, the investment continues to be accounted for under the equity method.

Gains and losses arising from dilution of investments in associates and joint ventures are recognized in the consolidated statement of comprehensive income.

In all other cases, when the Company and its subsidiaries cease to have significant influence over an associate or joint control over a joint venture, it is accounted for as a disposal of the entire interest in that investee, with a resulting gain or loss being recognized in profit or loss. Any interest retained in that former investee at the date when significant influence or joint control is lost is recognized at fair value and this amount is regarded as the fair value on initial recognition of a financial asset (Note 2(k)).

(c) Segment reporting

The Company and its subsidiaries determine the operating segment based on the internal organization structure, management requirement and internal reporting system for purposes of presenting reportable segment information.

An operating segment represents a component of the Company and its subsidiaries that meets all the conditions below: (i) the component earns revenue and incurs expenses in its daily operating activities; (ii) chief operating decision maker of the Company and its subsidiaries regularly reviews the operating results of the component in order to make decisions on allocating resources and assessing performance; (iii) the financial position, operating results, cash flows and other related financial information of the component are available. When the two or more operating segments exhibit similar economic characteristics and meet certain conditions, the Company and its subsidiaries combine them as one reportable segment.

(d) Foreign currency translation

(i) Functional and presentation currency

Items included in the financial statements of each of the Company and its subsidiaries are measured using the currency of the primary economic environment in which the entity operates (the "functional currency"). The consolidated financial statements are presented in Renminbi ("RMB"), which is the Company's functional and presentation currency.

(ii) Transactions and balances

Foreign currency transactions are translated into the functional currency using the spot exchange rate on the transaction dates. As at the end of reporting period, foreign currency monetary items are translated into functional currency at the spot exchange rate as at the end of reporting period. Exchange differences are directly expensed in current period profit or loss unless they arises from foreign currency loans borrowed for purchasing or construction of qualifying assets which is eligible for capitalization or they arise from monetary items that qualify as hedging instruments in cash flow hedges which are recorded in other comprehensive income to the extent that the hedge is effective.

(iii) Foreign subsidiaries

The operating results and financial position of the foreign subsidiaries are translated into presentation currency as follows:

Asset and liability items in each statement of financial position of foreign operations are translated at the closing rates at the end of reporting period; equity items excluding retained earnings are translated at the spot exchange rates at the date of the transactions. Income and expense items in the statement of comprehensive income of the foreign operations are translated at average exchange rates approximating the rate on transaction dates. All resulting translation differences are recognized in other comprehensive income.

The cash flows denominated in foreign currencies and cash flows of overseas subsidiaries are translated at average exchange rates approximating the rates at the dates when cash flows incurred. The effect of the foreign currency translation on the cash and cash equivalents is presented in the statement of cash flows separately.

On the disposal of a foreign operation (that is, a disposal of the Company and its subsidiaries' entire interest in a foreign operation, or a disposal involving loss of control over a subsidiary that includes a foreign operation, a disposal involving loss of joint control over a joint ventures that includes a foreign operation, or a disposal involving loss of significant influence over an associate that includes a foreign operation), all of the exchange differences accumulated in equity in respect of that operation attributable to the equity holders of the Company are reclassified to profit or loss.

In the case of a partial disposal that does not result in the Company and its subsidiaries losing control over a subsidiary that includes a foreign operation, the proportionate share of accumulated exchange differences are re-attributed to non-controlling interests and are not recognized in profit or loss. For all other partial disposals (that is, reductions in the Company and its subsidiaries' ownership interest in associates or joint venture that includes a foreign operation that do not result in the Company and its subsidiaries losing significant influence or joint control), the proportionate share of the accumulated exchange difference is reclassified to profit or loss.

(e) Property, plant and equipment

Property, plant and equipment consists of dam, port facilities, buildings, electric utility plant in service, transportation facilities, others and construction-in-progress ("CIP"). Property, plant and equipment acquired or constructed are initially recognized at cost and carried at the net value of cost less accumulated depreciation and accumulated impairment loss, unless classified as held for sale (or included in a disposal group that is classified as held for sale).

Cost of CIP comprises construction expenditures, other expenditures necessary for the purpose of preparing the CIP for its intended use, those borrowing costs incurred before the assets are ready for intended use that are eligible for capitalization. CIP is not depreciated until such time as the relevant asset is completed and ready for its intended use.

Subsequent costs about property, plant and equipment are included in the asset's carrying amount only when it is probable that future economic benefits associated with the item will flow to the Company and its subsidiaries and the cost of the item can be measured reliably. The carrying amount of the replaced part is derecognized. Other subsequent expenditures not qualified for capitalization are charged in the current period profit or loss when they are incurred.

Depreciation of property, plant and equipment is provided based on book value of the asset less estimated residual value over the estimated useful life using straight-line method. For those impaired property, plant and equipment, depreciation is provided based on book value after deducting impairment provision over the estimated useful life of the asset. The estimated useful lives are as follows:

	Estimated useful lives
Dam	8 - 50 years
Port facilities	20 - 40 years
Buildings	8 - 30 years
Electric utility plant in service	5 - 30 years
Transportation facilities	8 - 27 years
Others	5 - 14 years

Where parts of an item of property, plant and equipment have different useful lives, the cost of the item is allocated on a reasonable basis between the parts and each part is depreciated separately. At the end of each year, the Company and its subsidiaries review the estimated useful lives, residual values and the depreciation method of the property, plant and equipment and make adjustment when necessary.

Property, plant and equipment is derecognized when it is disposed of, or is not expected to bring economic benefit through use or disposal. The amount of disposal proceeds arising from sale, transfer, disposal or write-off of the property, plant and equipment less book value and related tax expenses is recorded in 'operating expenses - others' in the statement of comprehensive income.

The carrying amount of property, plant and equipment is written down immediately to its recoverable amount when its carrying amount is greater than its recoverable amount (Note 2(j)).

(f) Investment property

Investment properties are land and/or buildings which are owned or held under a leasehold interest (Note 2(y)) to earn rental income and/or for capital appreciation. These include land held for a currently undetermined future use and property that is being constructed or developed for future use as investment property.

Investment properties are stated at fair value, unless they are still in the course of construction or development at the end of the reporting period and their fair value cannot be reliably measured at that time. Any gain or loss arising from a change in fair value or from the retirement or disposal of an investment property is recognized in profit or loss. Rental income from investment properties is accounted for as described in Note 2(x)(vi).

(g) Power generation license

The Company and its subsidiaries acquired the power generation license as part of the business combination with Tuas Power Ltd. ("Tuas Power"). The power generation license is initially recognized at fair value at the acquisition date. The license has an indefinite useful life and is not amortized. The assessment that the license has an indefinite useful life is based on the expected renewal of power generation license without significant restriction and cost, together with the consideration on related future cash flows generated and the expectation of continuous operations. It is tested annually for impairment and carried at cost less accumulated impairment loss. Useful life of the power generation license is reviewed by the Company and its subsidiaries each financial period to determine whether events and circumstances continue to support the indefinite useful life assessment.

(h) Mining rights

Mining rights are stated at cost less accumulated amortization and impairment losses (Note 2(j)) and are amortized based on the units of production method utilizing only recoverable coal reserves as the depletion base, unless the mining rights are classified as held for sale (or included in a disposal group that is classified as held for sale).

(i) Goodwill

Goodwill arising from the acquisitions of subsidiaries, associates and joint ventures represents the excess of the consideration transferred, the amount of any non-controlling interest in the acquiree and the acquisition-date fair value of any previous equity interest in the acquiree over the Company and its subsidiaries' share of the net fair value of the net identifiable assets, liabilities and contingent liabilities of the acquiree at the date of acquisition.

Goodwill is stated at cost less accumulated impairment losses. Goodwill arising on a business combination is allocated to each cash-generating unit, or groups of cash generating units, that is expected to benefit from the synergies of the combination and is tested annually for impairment (Note 2(j)).

On disposal of a cash generating unit during the year, any attributable amount of purchased goodwill is included in the calculation of the profit or loss on disposal.

(j) Impairment of non-financial assets

The carrying amounts of property, plant and equipment, mining rights, intangible assets with definite useful lives, land use rights and long-term equity investments not accounted for as financial assets are reviewed at each reporting date to determine whether there is any indication of impairment. If any such indication exists, then the asset's recoverable amount is estimated. Goodwill, indefinite-lived intangible assets and intangible assets not yet available for sale are tested for impairment annually regardless of whether there are indications of impairment or more frequently if events or changes in circumstances indicate a potential impairment. An impairment loss is recognized if the carrying amount of an asset or cash-generating unit ("CGU") exceeds its recoverable amount

The recoverable amount of an asset or CGU is the greater of its value in use and its fair value less cost to sell. For impairment testing, assets are grouped together into the smallest group of assets that generates cash inflows from continuing use that are largely independent of the cash inflows of other assets or CGUs.

Subject to an operating segment ceiling test, CGUs to which goodwill has been allocated are aggregated so that the level at which impairment testing is performed reflects the lowest level at which goodwill is monitored for internal reporting purposes.

Goodwill acquired in a business combination is allocated to groups of CGUs that are expected to benefit from the synergies of the combination.

Impairment losses are recognized in profit or loss. Impairment losses recognized in respect of CGUs are allocated first to reduce the carrying amount of any goodwill allocated to the CGU (group of CGUs), and then to reduce the carrying amounts of the other assets in the CGU (group of CGUs) on a pro rata basis, except that the carrying value of an asset will not be reduced below its individual fair value less costs of disposal (if measurable) or value in use (if determinable).

An impairment loss in respect of goodwill is not reversed. Except for goodwill, all impaired non-financial assets are subject to review for possible reversal of impairment at each reporting date. A reversal of an impairment loss is limited to the asset's carrying amount that would have been determined had no impairment loss been recognized in prior year. Reversals of impairment losses are credited to profit or loss in the year in which the reversals are recognized.

(k) Financial instruments

Financial assets are classified in the following categories at initial recognition: at fair value through profit or loss, loans and receivables and available-for-sale. The classification depends on the intention and ability of the Company and its subsidiaries to hold the financial assets.

(i) Financial assets at fair value through profit or loss

Financial assets at fair value through profit or loss include financial assets held for trading and designated upon initial recognition as at fair value through profit or loss, and contingent consideration of the acquirer in a business combination. A financial asset is classified in this category if acquired principally for the purpose of selling in the short term. Derivatives are classified as held for trading unless they are designated as hedges. Assets in this category are classified as current assets if expected to be settled within 12 months; otherwise, they are classified as non-current.

(ii) Loans and receivables

Loans and receivables refer to the non-derivative financial assets for which there is no quotation in the active market with fixed or determinable amount. They are included in current assets, except for maturities greater than 12 months after the end of reporting period which are classified as non-current assets. Loans and receivables are primarily included in as 'accounts receivable', 'other receivables and assets' and 'other non-current assets' in the statement of financial position.

(iii) Available-for-sale financial assets

Available-for-sale financial assets are non-derivative financial assets that are either designated in this category or not classified in any of the other categories. They are included in current assets when management intends to dispose of the available-for-sale financial assets within 12 months of the end of reporting period, otherwise, they are classified as non-current assets.

(iv) Recognition and measurement

Regular purchases and sales of financial assets are recognized at fair value initially on trade-date - the date on which the Company and its subsidiaries commit to purchase or sell the asset. Transaction costs relating to financial assets at fair value through profit or loss are directly expensed in the profit or loss as incurred. Transaction costs for other financial assets are included in the carrying amount of the asset at initial recognition. Financial assets are derecognized when the rights to receive cash flows from the financial assets have expired or have been transferred and all risks and rewards related to the ownership of the financial assets have been transferred to the transferee.

Financial assets at fair value through profit or loss and available-for-sale are subsequently measured at fair value. When an active market exists for a financial instrument, fair value is determined based on quoted prices in the active market. When no active market exists, fair value is determined by using valuation techniques. When applying valuation techniques, the Company and its subsidiaries maximize the use of relevant observable inputs and minimize the use of unobservable inputs.

Changes in the fair value of financial assets at fair value through profit or loss are recorded in 'gain/(loss) on fair value changes of financial assets/liabilities'.

Investments in equity instruments that do not have a quoted market price in an active market and whose fair value cannot be reliably measured are measured at cost. Loans and receivables are carried at amortized cost using the effective interest method.

Except for impairment loss and translation differences on monetary financial assets, changes in the fair value of available-for-sale financial assets are recognized in other comprehensive income. When these financial assets are derecognized, the accumulated fair value adjustments recognized in equity are included in the statement of comprehensive income as 'other investment income'. Dividends on available-for-sale financial assets are recorded in 'other investment income' when the right of the Company and its subsidiaries to receive payments is established.

(v) Impairment of financial assets

Except for financial assets at fair value through profit or loss, the Company and its subsidiaries perform assessment on the book value of financial assets at the end of reporting period. Provision for impairment is made when there is objective evidence showing that a financial asset is impaired.

For investments in associates and joint ventures, the impairment loss is measured by comparing the recoverable amount of the investment with its carrying amount.

The impairment loss is reversed if there has been a favourable change in the estimates used to determine the recoverable amount.

In the case of equity investments classified as available for sale, a significant or prolonged decline in the fair value of the investment below its cost is evidence that the assets are impaired. If any such evidence exists for available-for-sale financial assets, the cumulative loss, measured as the difference between the acquisition cost and the current fair value, less any impairment loss on that financial asset previously recognized in profit or loss, is removed from equity and recognized in profit or loss. Impairment losses recognized in the profit or loss on equity instruments are not reversed through the profit or loss.

When financial assets carried at amortized cost are impaired, the carrying amount of the financial assets is reduced to the present value of estimated future cash flows (excluding future credit losses that have not been incurred) discounted at the financial asset's original effective interest rate. The impaired amount is recognized as assets impairment loss in the current period. If there is objective evidence that the value of the financial assets has recovered as a result of objective changes in circumstances occurring after the impairment loss was originally recognized, the originally recognized impairment loss is reversed through profit or loss. For the impairment test of receivables, please refer to Note 2(l).

(vi) Derivative financial instruments and hedging activities

Derivatives are initially recognized at fair value on the date a derivative contract is entered into and are subsequently remeasured at their fair value. Gain or loss arising from subsequent change in the fair value of derivative financial instruments is recognized in profit or loss except for the effective portions of gain or loss on the derivative financial instruments designated as cash flow hedges which are recognized directly in other comprehensive income. Cash flow hedge represents a hedge against the exposure to variability in cash flows, which such cash flow is originated from a particular risk associated with highly probable forecast transactions and variable rate borrowings and which could affect the statement of comprehensive income.

The hedged items of cash flow hedge are the designated items with respect to the risks associated with future cash flow change resulting from variability in cash flows of a recognized asset or liability or a highly probable forecast transaction or the foreign currency risk of a committed future transaction. Hedging instruments are designated derivative for cash flow hedge whose cash flows are expected to offset changes in the cash flows of a hedged item.

The full fair value of a hedging derivative is classified as a non-current asset or liability when the remaining maturity of the hedge item is more than 12 months.

The Company and its subsidiaries document their assessments, both at hedge inception and on an ongoing basis, of whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in cash flows of hedged items. The Company and its subsidiaries apply ratio analysis method to evaluate the ongoing effectiveness of the cash flow hedge.

The effective portion of changes in the fair value of derivatives that are designated and qualify as cash flow hedges are recognized in other comprehensive income. The gain or loss relating to the ineffective portion is recognized immediately in the statement of comprehensive income within 'gain/(loss) on fair value changes of financial assets/liabilities'.

Amounts accumulated in equity are reclassified to the profit or loss in the periods when the hedged item affects profit or loss. The gain or loss relating to the effective portion of interest rate swaps hedging variable rate borrowings is recognized in the statement of comprehensive income within 'interest expense'. The gain or loss relating to the effective portion of exchange forward hedging foreign currency denominated payables is recognized in the statement of comprehensive income within 'exchange gain/(loss) and bank charges, net'. However, when the forecast transaction that is hedged results in the recognition of a non-financial asset, the gains and losses previously deferred in equity are transferred from equity and included in the initial measurement of the cost of the asset. In the case where the Company and its subsidiaries expect all or a portion of net loss previously recognized directly in other comprehensive income will not be recovered in future financial periods, the irrecoverable portion will be reclassified into profit or loss.

When a hedging instrument expires or is sold, terminated or exercised or when a hedge no longer meets the criteria for hedge accounting, the Company and its subsidiaries will discontinue hedge accounting. Any cumulative gain or loss existing in equity at that time remains in equity and is subsequently recognized when the forecast transaction is ultimately recognized in the profit or loss. When a forecast transaction is no longer expected to occur, the cumulative gain or loss that was reported in equity is immediately transferred to the statement of comprehensive income within 'gain/(loss) on fair value changes of financial assets/liabilities'.

(l) Loans and receivables

Loans and receivables, which primarily include accounts receivable, other receivables and other non-current assets, are recognized initially at fair value. Loans and receivables are subsequently measured at amortized cost less provision for doubtful debts using the effective interest method.

The Company and its subsidiaries establish an allowance for impairment that represents its estimate of incurred losses in respect of receivables. The main components of this allowance are a specific loss component that relates to individually significant exposures, and a collective loss component established for groups of similar assets in respect of losses that have been incurred but not yet identified. The collective loss allowance is determined based on historical data of payment statistics for similar financial assets.

When there is objective evidence that the Company and its subsidiaries will not be able to collect all amounts due according to the original terms of the receivables, impairment test is performed and related provision for doubtful accounts is made based on the shortfall between carrying amounts and respective present value of estimated future cash flows. The carrying amounts of the receivables are reduced through the use of allowance accounts, and the amount of the provision is recognized in the statement of comprehensive income within 'operating expenses - others'. When a receivable is uncollectible, it is written off against the allowance account for the receivable. Subsequent recoveries of amounts previously written off are credited against 'operating expenses - others' in the statement of comprehensive income.

(m) Inventories

Inventories include fuel for power generation, materials for repairs and maintenance and spare parts, and are stated at lower of cost and net realizable values.

Inventories are initially recorded at cost and are charged to fuel costs or repairs and maintenance, respectively when used, or capitalized to property, plant and equipment when installed, as appropriate, using weighted average cost basis. Cost of inventories includes costs of purchase and transportation costs.

When the forecast transaction that is hedged results in the recognition of the inventory, the gains and losses previously deferred in equity are transferred from equity and included in the initial measurement of the cost of the inventory.

Provision for inventory obsolescence is determined by the excess of cost over net realizable value. Net realizable values are determined based on the estimated selling price less estimated conversion costs during power generation, selling expenses and related taxes in the ordinary course of business.

(n) Related parties

Parties are considered to be related if one party has the ability, directly or indirectly, to control the other party or exercise significant influence over the other party in making financial and operating decisions. Parties are also considered to be related if they are subject to common control or jointly control of the same third party; one party is controlled or jointly controlled by a third party and the other party is an associate or a joint venture of the same third party.

(o) Cash and cash equivalents

Cash and cash equivalents listed in the statement of cash flows represents cash in hand, call deposits held with banks and other financial institutions, and other short-term (3 months or less), highly-liquid investments that are readily convertible to known amounts of cash and are subject to an insignificant risk of changes in value. Bank overdrafts that are repayable on demand and form an integral part of the cash management are also included as a component of cash and cash equivalents for the purpose of the consolidated statement of cash flow.

(p) Borrowings

Borrowings are recognized initially at fair value less transaction costs and subsequently measured at amortized cost using the effective interest method. Borrowings are classified as current liabilities unless the Company and its subsidiaries have an unconditional right to defer settlement of the liability for at least 12 months after the end of reporting period.

(q) Borrowing costs

General and specific borrowing costs directly attributable to the acquisition, construction or production of qualifying assets, which are assets that necessarily take a substantial period of time to get ready for their intended use or sale, are added to the cost of those assets. The capitalization of borrowing costs as part of the cost of a qualifying asset commences when expenditure for the asset is being incurred, borrowing costs are being incurred and activities that are necessary to prepare the asset for its intended use or sale are in progress. Capitalization of borrowing costs is suspended or ceases when substantially all the activities necessary to prepare the qualifying asset for its intended use or sale are interrupted or complete.

The amount of specific borrowing costs capitalized is net of the investment income on any temporary investment of the funds pending expenditure on the asset.

All other borrowing costs are recognized in profit or loss in the period in which they are incurred.

(r) Share Capital

Ordinary shares are classified as equity. Incremental costs directly attributable to the issue of new shares are shown in equity as a deduction, net of tax, from the proceeds.

(s) Perpetual corporate bond

Perpetual corporate bond is classified as equity if it is non-redeemable, or redeemable only at the Company's option, and any interests are discretionary. Interests on perpetual corporate bonds classified as equity are recognised as distributions within equity.

(t) Payables

Payables primarily include accounts payable and other liabilities, and are recognized initially at fair value and subsequently measured at amortized cost using the effective interest method.

(u) Taxation

(i) Value-added tax ("VAT")

The domestic power, heat and goods sales of the Company and its subsidiaries are subject to VAT. VAT payable is determined by applying 17% (13% or 11% on heat) on the taxable revenue after offsetting deductible input VAT of the period.

The applicable tax rate of VAT in respect of the lease of tangible movable properties, transportation industry and other modern services industry are 17%, 11% and 6%, respectively.

According to the relevant regulations of Ministry of Finance of PRC and State Administration of Taxation, the transformation from Business Tax to VAT launched nation-wide from 1 May 2016 and all business tax taxpayers in the construction industry, real estate industry, financial industry, living services were included. The applicable tax rate of VAT in respect of sectors including construction services, lease of immovables, sale of immovables and transfer of land use rights is 11%, and in respect of financial and living services is 6%.

(ii) Goods and service tax ("GST")

The power sales of the subsidiaries in Singapore are subject to goods and service tax of the country where they operate. GST payable is determined by applying 7% on the taxable revenue after offsetting deductible GST of the period.

(iii) Current and deferred income tax

The income tax expense for the period comprises current and deferred income tax. Income tax expense is recognized in profit or loss, except to the extent that it relates to items recognized in other comprehensive income or directly in equity. In this case, the tax is also recognized in other comprehensive income or directly in equity, respectively.

Deferred income tax assets and liabilities are recognized based on the differences between tax bases of assets and liabilities and respective book values (temporary differences). For deductible tax losses or tax credit that can be brought forward in accordance with tax law requirements for deduction of taxable income in subsequent years, it is considered as temporary differences and related deferred income tax assets are recognized. No deferred income tax liability is recognized for temporary difference arising from initial recognition of goodwill. For those temporary differences arising from initial recognition of an asset or liability in a non-business combination transaction that affects neither accounting profit nor taxable profit (or deductible loss) at the time of the transaction, no deferred income tax asset and liability is recognized. The temporary differences relating to investments in subsidiaries to the extent that, in the case of taxable differences, the Company and its subsidiaries control the timing of the reversal and it is probable that the differences will not reverse in the foreseeable future, or in the case of deductible differences, unless it is probable that they will reverse in the future.

The Company and its subsidiaries recognize deferred income tax assets to the extent that it is probable that taxable profit will be available to offset the deductible temporary difference, deductible tax loss and tax credit.

At the end of reporting period, deferred income tax assets and liabilities are measured at the tax rates that are expected to apply to the period when the asset is realized or liability is settled.

The carrying amount of a deferred tax asset is reviewed at the end of each reporting period and is reduced to the extent that it is no longer probable that sufficient taxable profits will be available to allow the related tax benefit to be utilised. Any such reduction is reversed to the extent that it becomes probable that sufficient taxable profits will be available.

Deferred income tax assets and deferred income tax liabilities are offset when meeting all the conditions below:

(1) The Company and its subsidiaries have the legal enforceable right to offset current income tax assets and current income tax liabilities;

(2) Deferred income tax assets and deferred income tax liabilities are related to the income tax levied by the same tax authority of the Company and its subsidiaries.

(v) Employee benefits

Employee benefits include all expenditures relating to the employees for their services. The Company and its subsidiaries recognize employee benefits as liabilities during the accounting period when employees render services and allocate to related cost of assets and expenses based on different beneficiaries.

In connection with pension obligations, the Company and its subsidiaries operate various defined contribution plans in accordance with the local conditions and practices in the countries and provinces in which they operate. A defined contribution plan is a pension plan under which the Company and its subsidiaries pay fixed contributions into a separate publicly administered pension insurance plan on mandatory and voluntary bases. The Company and its subsidiaries have no legal or constructive obligations to pay further contributions if the fund does not hold sufficient assets to pay all employees the benefits relating to employee service in the current and prior periods. The contributions are recognized as employee benefit when incurred. Prepaid contributions are recognized as assets to the extent that a cash refund or a reduction in the future payment is available.

(w) Government grants

Government grants are recognized when the Company and its subsidiaries fulfill the conditions attached to them and they are probable to be received. When government grants are received in the form of monetary assets, they are measured at the amount received or receivable. When the grant is in the form of non-monetary assets, it is measured at fair value. When fair value cannot be measured reliably, nominal amount is assigned.

Asset-related government grant is recognized as deferred income and is amortized evenly in profit or loss over the useful lives of related assets.

Income-related government grant that is used to compensate subsequent related expenses or losses of the Company and its subsidiaries are recognized as deferred income and recorded in the profit or loss when related expenses or losses incurred. When the grant is used to compensate expenses or losses that were already incurred, they are directly recognized in current period profit or loss.

(x) Revenue and income recognition

Revenue and income are recognized based the following methods:

Revenue and income are recognized when it is probable that the economic benefits associated with the transaction will flow to the Company and its subsidiaries and the amount of the revenue and income can be measured reliably.

(i) Electricity and heat sales revenue

Electricity and heat sales revenue represents the fair value of the consideration received or receivable for electricity and heat sold in the ordinary course of the activities of the Company and its subsidiaries (net of VAT or GST). Revenue is earned and recognized upon transmission of electricity to the customers or the power grid controlled and owned by the respective regional or provincial grid companies.

(ii) Goods sales revenue

Goods sales revenue represents the fair value of the consideration received or receivable for the sale of the goods in the ordinary course of the activities of the Company and its subsidiaries. Goods sales revenue is recognized when the goods is delivered to the customers and there is no unfulfilled obligation that could affect the customer's acceptance of the goods.

(iii) Service revenue

Service revenue refers to amounts received from service of port loading, conveying and transportation. The Company and its subsidiaries recognize revenue when the relevant service is provided.

(iv) Dividend income

Dividend income from unlisted investments is recognized when the shareholder's right to receive payment is established. Dividend income from listed investments is recognized when the share price of the investment goes ex-dividend.

(v) Interest income

Interest income from deposits is recognized on a time proportion basis using effective interest method. Interest income from the finance lease is recognized on a basis that reflects a constant periodic rate of return on the net investment in the finance lease.

(vi) Rental income from operating leases

Rental income receivable under operating leases is recognized in profit or loss in equal instalments over the periods covered by the lease term, except where an alternative basis is more representative of the pattern of benefits to be derived from the use of the leased asset. Lease incentives granted are recognized in profit or loss as an integral part of the aggregate net lease payments receivable. Contingent rentals are recognized as income in the accounting period in which they are earned.

(y) Leases

Leases where all the risks and rewards incidental to ownership of the assets are in substance transferred to the lessees are classified as finance leases. All other leases are operating leases.

(i) Operating leases

Operating lease expenses are capitalized or expensed on a straight-line basis over the lease term.

The cost of acquiring land held under an operating lease is amortized on a straight-line basis over the period of the lease term.

(ii) Finance lease

The Company and its subsidiaries recognize the aggregate of the minimum lease receipts and the initial direct costs on the lease inception date as the receivable. The difference between the aggregate of the minimum lease receipts and the initial direct costs and sum of their respective present values is recognized as unrealized finance income. The Company and its subsidiaries adopt the effective interest method to allocate such unrealized finance income over the lease term. At the end of reporting period, the Company and its subsidiaries present the net amount of finance lease receivable after deducting any unrealized finance income in non-current assets and current assets, respectively.

Please refer to Note 2(k)(u) for impairment test on finance lease receivables.

Where the Company and its subsidiaries acquire the use of assets under finance leases, the amounts representing the fair value of the leased asset, or, if lower, the present value of the minimum lease payments, of such assets are included in fixed assets and the corresponding liabilities, net of finance charges, are recorded as obligations under finance leases. Depreciation is provided at rates which write off the cost or valuation of the assets over the term of the relevant lease or, where it is likely the Company and its subsidiaries will obtain ownership of the asset, the life of the asset, as set out in Note 2(e). Impairment losses are accounted for in accordance with the accounting policy as set out in Note 2(j). Finance charges implicit in the lease payments are charged to profit or loss over the period of the leases so as to produce an approximately constant periodic rate of charge on the remaining balance of the obligations for each accounting period. Contingent rentals are charged to profit or loss in the accounting period in which they are incurred.

(z) Purchase of electricity

The overseas subsidiary of the Company recognizes electricity purchase cost when it purchases the electricity and transmits to its customers.

(aa) Financial guarantee contracts

The Company issues financial guarantee contracts that transfer significant insurance risk. Financial guarantee contracts are those contracts that require the issuer to make specified payments to reimburse the holders for losses they incur because specified debtors fail to make payments when due in accordance with the original or modified terms of debt instruments. Where the Company issues a financial guarantee, the fair value of the guarantee is initially recognized as deferred income within accounts payable and other liabilities. The fair value of financial guarantees issued at the time of issuance is determined by reference to fees charged in an arm's length transaction for similar services, when such information is obtainable, or is otherwise estimated by reference to interest rate differentials, by comparing the actual rates charged by lenders when the guarantee is made available with the estimated rates that lenders would have charged, had the guarantees not been available, where reliable estimates of such information can be made. Where consideration is received or receivable for the issuance of the guarantee, the consideration is recognized in accordance with the Company's policies applicable to that category of asset. Where no such consideration is received or receivable, an immediate expense is recognized in profit or loss on initial recognition of any deferred income. The amount of the guarantee initially recognized as deferred income is amortized in profit or loss over the term of the guarantee as income from financial guarantees issued. In addition, provisions are recognised if and when (i) it becomes probable that the holder of the guarantee will call upon the Company under the guarantee, and (ii) the amount of that claim on the Company is expected to exceed the amount currently carried in trade and other payables in respect of the guarantee, i.e. the amount initially recognised, less accumulated amortisation.

(ab) Dividend distribution

Dividend distribution to the shareholders of the Company and its subsidiaries is recognized as a liability in the period when the dividend is approved in the shareholders' meeting.

(ac) Contingencies

Contingent liabilities are not recognized in the financial statements. They are disclosed unless the possibility of an outflow of resources embodying economic benefits is remote. Contingent assets are not recognized in the financial statements but disclosed when an inflow of economic benefit is probable.

(ad) Standards and amendments to published standards that are not yet effective but relevant to the Company and its subsidiaries

The following are standards or amendments to existing standards that have been published and are mandatory for the accounting periods beginning on or after 1 January 2018, but the Company and its subsidiaries have not early adopted:

• IFRIC 22,"Foreign currency transactions and advance consideration", which will be effective for accounting periods beginning on or after 1 January 2018.

• IFRS 15, "Revenue from contracts with customers", which will be effective for accounting periods beginning on or after 1 January 2018.

• IFRS 9, "Financial instrument (2014)", which will be effective for accounting periods beginning on or after 1 January 2018.

• IFRS 16, "Leases", which will be effective for accounting periods beginning on or after 1 January 2019.

• Amendments to IAS 40, "Investment property: Transfers of investment property", which will be effective for accounting periods beginning on or after 1 January 2018.

• IFRIC 23, "Uncertainty over income tax treatments", which will be effective for accounting periods beginning on or after 1 January 2019.

• Included in "Annual improvements to IFRSs 2014-2016 Cycle", IAS 28, "Investments in Associates and Joint Ventures", which will be effective for accounting periods beginning on or after 1 January 2018.

The Company and its subsidiaries are in the process of making an assessment of what the impact of these amendments and new standards is expected to be in the period of initial application. While the assessment has been substantially completed for IFRS 9 and IFRS 15, the actual impacts upon the initial adoption of the standards may differ as the assessment completed to date is based on the information currently available to the Company and its subsidiaries, and further impacts may be identified before the standards are initially applied in the Company and its subsidiaries' interim financial report for the six months ending 30 June 2018. The Company and its subsidiaries may also change its accounting policy elections, including the transition options, until the standards are initially applied in that financial report.

(i) IFRS 9, Financial instruments (2014)

IFRS 9 will replace the current standard on accounting for financial instruments, IAS 39, Financial instruments: Recognition and measurement. IFRS 9 introduces new requirements for classification and measurement of financial assets, including the measurement of impairment for financial assets and hedge accounting. On the other hand, IFRS 9 incorporates without substantive changes the requirements of IAS 39 for recognition and derecognition of financial instruments and the classification and measurement of financial liabilities.

IFRS 9 is effective for annual periods beginning on or after 1 January 2018 on a retrospective basis. The Company and its subsidiaries plan to use the exemption from restating comparative information and will recognise any transition adjustments against the opening balance of equity at 1 January 2018.

Expected impacts of the new requirements on the consolidated financial statements are as follows:

• The Company and its subsidiaries have assessed that their financial assets currently measured at amortised cost and FVTPL will continue with their respective classification and measurements upon the adoption of IFRS 9;

• With respect to the Company and its subsidiaries' financial assets currently classified as "available-for-sale", these are equity investments which the Company and its subsidiaries have the option to irrevocably designate as FVTOCI (without recycling) on transition to IFRS 9. The Company and its subsidiaries plan to elect this designation option for any of the investments held on 1 January 2018 and will recognise any fair value changes in respect of these investments in other comprehensive income as they arise. The Company and its subsidiaries are in the process of assessing the fair value of the available-for-sale financial assets currently measured at cost less impairment and will disclose the impact to the opening balance of the Company and its subsidiaries' equity as 1 January 2018 in interim financial report for the six months ending 30 June 2018.

• The classification and measurement requirements for financial liabilities under IFRS 9 are largely unchanged from IAS 39, except that IFRS 9 requires the fair value change of a financial liability designated at FVTPL that is attributable to changes of that financial liability's credit risk to be recognised in other comprehensive income (without reclassification to profit or loss). The Company and its subsidiaries currently do not have any above mentioned financial liabilities designated at FVTPL and therefore this new requirement will not have any impact on the Company and its subsidiaries on adoption of IFRS 9.

• The new impairment model in IFRS 9 replaces the "incurred loss" model in IAS 39 with an "expected credit loss" model. Under the expected credit loss model, it will no longer be necessary for a loss event to occur before an impairment loss is recognised. Instead, an entity is required to recognise and measure either a 12-month expected credit loss or a lifetime expected credit loss, depending on the asset and the facts and circumstances. The Company and its subsidiaries expect that the application of the expected credit loss model will result in earlier recognition of credit losses. Based on a preliminary assessment, the Company and its subsidiaries do not expect material change to the loss allowance for the Company and its subsidiaries' trade debtors and other debt investment held at amortised cost and net investment in finance lease.

• IFRS 9 does not fundamentally change the requirements relating to measuring and recognising ineffectiveness under IAS 39. However, greater flexibility has been introduced to the types of transactions eligible for hedge accounting. The Company and its subsidiaries have assessed that its current hedge relationships will qualify as continuing hedges upon the adoption of IFRS 9 and therefore it expects that the accounting for its hedging relationships will not be significantly impacted.

(ii) IFRS 15, Revenue from contracts with customers

IFRS 15 establishes a comprehensive framework for recognising revenue from contracts with customers. IFRS 15 will replace the existing revenue standards, IAS 18, Revenue, which covers revenue arising from sale of goods and rendering of services, and IAS 11, Construction contracts, which specifies the accounting for revenue from construction contracts. IFRS 15, deals with revenue recognition and establishes principles for reporting useful information to users of financial statements about the nature, amount, timing and uncertainty of revenue and cash flows arising from an entity's contracts with customers. IFRS 15 provides that an entity should recognise revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for the goods or services provided and establishes a five step model to be applied by an entity in evaluating its contracts with customers. Revenue is recognised when a customer obtains control of a good or service and thus has the ability to direct the use and obtain the benefits from the good or service. An entity should adopt IFRS 15 in transition using either modified retrospective approach or cumulative effect method.

During 2017, the Company substantially completed its assessment of the potential impact of the new standard, including performing a review of revenue streams and customer contracts in order to evaluate the effects that this standard may have on the consolidated statement of comprehensive income and consolidated statement of financial position. The Company and its subsidiaries' revenues are substantially generated from the sales of power heat and other goods. Effective 1 January 2018, the Company and its subsidiaries adopted IFRS 15 utilising the cumulative effect method, which results in the Company and its subsidiaries' retaining prior period comparative figures as reported under the previous standards and recognising the cumulative effect of applying IFRS 15 as an adjustment to the opening balance of retained earnings as at the date of initial adoption, and will provide additional disclosures comparing results to previous IFRS in its 2018 consolidated financial statements. The Company and its subsidiaries plan to apply the new revenue standard only to contracts not completed as of the date of initial application, referred to as open contracts. Since the number of open contracts at 31 December is limited, and more than 95% of the Company and its subsidiaries' revenue comprised of contracts with customers from rate-regulated sales of power and heat, where revenue will continue to be recognised upon transmission to the customers, the Company and its subsidiaries expects that the adoption of IFRS 15 will not have material impact on the consolidated financial statements.

(iii) IFRS 16, Lease

As disclosed in Note 2(y), currently the Company and its subsidiaries classify leases into finance leases and operating leases and account for the lease arrangements differently, depending on the classification of the lease. The Company and its subsidiaries enter into some leases as the lessor and others as the lessee.

IFRS 16 is not expected to impact significantly on the way that lessors account for their rights and obligations under a lease. However, once IFRS 16 is adopted, lessees will no longer distinguish between finance leases and operating leases. Instead, subject to practical expedients, lessees will account for all leases in a similar way to current finance lease accounting, i.e. at the commencement date of the lease the lessee will recognise and measure a lease liability at the present value of the minimum future lease payments and will recognise a corresponding "right-of-use" asset. After initial recognition of this asset and liability, the lessee will recognise interest expense accrued on the outstanding balance of the lease liability, and the depreciation of the right-of-use asset, instead of the current policy of recognising rental expenses incurred under operating leases on a systematic basis over the lease term. As a practical expedient, the lessee can elect not to apply this accounting model to short-term leases (i.e. where the lease term is 12 months or less) and to leases of low-value assets, in which case the rental expenses would continue to be recognised on a systematic basis over the lease term.

IFRS 16 will primarily affect the Company and its subsidiaries' accounting as a lessee of leases for properties, plant and equipment which are currently classified as operating leases. The application of the new accounting model is expected to lead to an increase in both assets and liabilities and to impact on the timing of the expense recognition in the statement of profit or loss over the period of the lease. As disclosed in Note 39(b), at 31 December 2017 the Company and its subsidiaries' future minimum lease payments under non-cancellable operating leases amount to RMB1,487 million for property, plant and equipment and land use rights, the majority of which is payable either between 1 and 5 years after the reporting date or in more than 5 years. Some of these amounts may therefore need to be recognised as lease liabilities, with corresponding right-of-use assets, once IFRS 16 is adopted. The Company and its subsidiaries will need to perform a more detailed analysis to determine the amounts of new assets and liabilities arising from operating lease commitments on adoption of IFRS 16, after taking into account the applicability of the practical expedient and adjusting for any leases entered into or terminated between now and the adoption of IFRS 16 and the effects of discounting.

There are no other amendments and new standards that are not yet effective that would be expected to have a material impact on the Company and its subsidiaries' consolidated financial statements.

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Financial and capital risks management

12 Months Ended

Dec. 31, 2017

Financial and capital risks management [abstract]

Financial and capital risks management

3 Financial and capital risks management

(a) Financial risk management

Risk management, including the management on the financial risks, is carried out under the instructions of the Strategic Committee of Board of Directors and the Risk Management Team. The Company works out general principles for overall management as well as management policies covering specific areas. In considering the importance of risks, the Company identifies and evaluates risks at head office and individual power plant level, and requires analysis and proper communication of the information collected periodically.

SinoSing Power and its subsidiaries are subject to financial risks that are different from the entities operating within the PRC. They have a series of controls in place to maintain the cost of risks occurring and the cost of managing the risks at an acceptable level. Management continually monitors the risk management process to ensure that an appropriate balance between risk and control is achieved. SinoSing Power and its subsidiaries have their written policies and financial authorization limits in place which are reviewed periodically. These financial authorization limits seek to mitigate and eliminate operational risks by setting approval thresholds required for entering into contractual obligations and investments.

(i) Market risk

(1) Foreign exchange risk

Foreign exchange risk of the entities operating within the PRC primarily arises from loans denominated in foreign currencies of the Company and its subsidiaries. SinoSing Power and its subsidiaries are exposed to foreign exchange risk on bank balances, accounts receivable, other receivables and assets, accounts payable and other liabilities that are denominated primarily in US$, a currency other than Singapore dollar ("S$"), their functional currency. Please refer to Note 18, 19, 24, 27 and 35 for details. The Company and its subsidiaries manage exchange risk through closely monitoring interest and exchange market.

As at 31 December 2017, if RMB had weakened/strengthened by 5% (2016: 5%) against US$ and 3% (2016: 3%) against EUR ("€") with all other variables constant, the Company and its subsidiaries would further recognize exchange loss/gain amounted RMB112 million (2016: RMB142 million) and RMB7million (2016: RMB9 million), respectively. The ranges of such sensitivity disclosed above were based on the observation on the historical trend of related exchange rates during the previous year under analysis.

As at 31 December 2017, if S$ had weakened/strengthened by 10% (2016: 10%) against US$ with all other variables constant, the Company and its subsidiaries would further recognize exchange gain/loss amounted RMB30million (2016: exchange loss/gain RMB10 million). The ranges of such sensitivity disclosed above were based on the management's experience and forecast.

SinoSing Power and its subsidiaries also are exposed to foreign exchange risk on fuel purchases that are denominated primarily in US$. They substantially hedge their estimated foreign currency exposure in respect of forecast fuel purchases over the following three months using primarily foreign currency contracts.

(2) Price risk

The available-for-sale financial assets of the Company and its subsidiaries are exposed to equity security price risk.

Detailed information relating to the available-for-sale financial assets is disclosed in Note 10. The Company closely monitors the pricing trends in the open market in determining its long-term strategic stakeholding decisions.

The Company and its subsidiaries are exposed to fuel price risk on fuel purchases. In particular, SinoSing Power and its subsidiaries use fuel oil swap to hedge against such a risk and designate them as cash flow hedges. Please refer to Note 14 for details.

(3) Cash flow interest rate risk

The interest rate risk of the Company and its subsidiaries primarily arises from long-term loans. Loans borrowed at variable rates expose the Company and its subsidiaries to cash flow interest rate risk. The exposures of these risks are disclosed in Note 24 to the financial statements. The Company and its subsidiaries have entered into interest rate swap agreements with banks to hedge against a portion of cash flow interest rate risk.

As at 31 December 2017, if interest rates on RMB-denominated borrowings had been 50 basis points higher/lower with all other variables held constant, interest expense for the year would have been RMB789 million (2016: RMB520 million) higher/lower. If interest rates on US$-denominated borrowings had been 50 basis points higher/lower with all other variables held constant, interest expense for the year would have been RMB6 million (2016: RMB7 million) higher/lower. If interest rates on S$-denominated borrowings had been 100 basis points higher/lower with all other variables held constant, interest expense for the year would have been RMB72 million (2016: RMB59 million) higher/lower. The ranges of such sensitivity disclosed above were based on the observation on the historical trend of related interest rates during the previous year under analysis.

The Company has entered into a floating-to-fixed interest rate swap agreement to hedge against cash flow interest rate risk of a loan. According to the interest rate swap agreement, the Company agrees with the counterparty to settle the difference between fixed contract rates and floating-rate interest amounts calculated by reference to the agreed notional amounts quarterly until 2019. Tuas Power Generation Pte. Ltd. ("TPG") also entered into a number of floating-to-fixed interest rate swap agreements to hedge against cash flow interest rate risk of a loan. According to the interest rate swap agreements, TPG agrees with the counterparty to settle the difference between fixed contract rates and floating-rate interest amounts calculated by reference to the agreed notional amount semi-annually until 2020. Please refer to Note 14 for details.

(ii) Credit risk

Credit risk arises from bank deposits, accounts receivable, other receivables and assets, available-for-sale financial assets and other non-current assets. The maximum exposures of available-for-sale financial assets, other non-current assets, other receivables and assets, accounts receivable and bank deposits are disclosed in Note 10, 16, 18, 19 and 35 to the financial statements, respectively.

Bank deposits are placed with reputable banks and financial institutions. In addition, a significant portion is deposited with a non-bank financial institution which is a related party of the Company. The Company has a director on the Board of this non-bank financial institution and exercises influence. Corresponding maximum exposures of these bank deposits are disclosed in Note 36 (a)(i) to the financial statements.

Most of the power plants of the Company and its subsidiaries operating within the PRC sell electricity generated to their sole customers, the power grid companies of their respective provinces or regions where the power plants operate. These power plants communicate with their individual grid companies periodically and believe that adequate provision for doubtful accounts have been made in the financial statements.

Singapore subsidiaries derive revenue mainly from sale of electricity to the National Electricity Market of Singapore operated by Energy Market Company Pte. Ltd., which does not have high credit risk. Singapore subsidiaries also derive revenue mainly from retailing electricity to consumers with monthly consumption of more than 2,000kWh. These customers engage in a wide spectrum of manufacturing and commercial activities in a variety of industries. Singapore subsidiaries hold cash deposits of RMB161.37 million (2016: RMB175.86 million) and guarantees from creditworthy financial institutions as a security from these customers.

(iii) Liquidity risk

Liquidity risk management is to primarily ensure the ability of the Company and its subsidiaries to meet its liabilities as and when they are fall due. The liquidity reserve comprises the undrawn borrowing facility and cash and cash equivalents available as at each month end in meeting its liabilities.

The Company and its subsidiaries maintain flexibility in funding by cash generated by their operating activities and availability of committed credit facilities.

Financial liabilities due within 12 months are presented as current liabilities in the statement of financial position. The cash flows of derivative financial liabilities and repayment schedules of the long-term loans and long-term bonds are disclosed in Note 14, 24 and 25, respectively.

(b) Fair value estimation

(i) Fair value measurements

The table below analyses financial instruments carried at fair value, by valuation method. The different levels have been defined as follows:

• Level 1- Quoted prices (unadjusted) in active markets for identical assets or liabilities.

• Level 2- Inputs other than quoted prices included within level 1 that are observable for the asset or liability, either directly (that is, as prices) or indirectly (that is, derived from prices).

• Level 3- Inputs for the asset or liability that are not based on observable market data (that is, unobservable inputs).

The following table presents the assets and liabilities that are measured at fair value at 31 December 2017.

	Level 1		Level 2		Level 3		Total
Assets
Financial assets at fair value through profit or loss
- Trading derivatives (Note 14)		-		2,726		-		2,726
-Contingent consideration (Note 40)		-		-		859,547		859,547
Derivatives used for hedging (Note 14)		-		330,966		-		330,966
Available-for-sale financial assets- Equity securities (Note 10)		9,223		-		-		9,223
Total assets		9,223		333,692		859,547		1,202,462
Liabilities
Financial liabilities at fair value through profit or loss
- Trading derivatives (Note 14)		-		125		-		125
Derivatives used for hedging (Note 14)		-		210,539		-		210,539
Total liabilities		-		210,664		-		210,664

The following table presents the assets and liabilities that are measured at fair value at 31 December 2016.

	Level 1		Level 2		Level 3		Total
Assets
Financial assets at fair value through profit or loss - Trading derivatives (Note 14)		-		5,881		-		5,881
Derivatives used for hedging (Note 14)		-		372,442		-		372,442
Available-for-sale financial assets - Equity securities (Note 10)		1,820,713		-		-		1,820,713
Total assets		1,820,713		378,323		-		2,199,036
Liabilities
Financial liabilities at fair value through profit or loss
- Trading derivatives (Note 14)		-		619		-		619
Derivatives used for hedging (Note 14)		-		334,119		-		334,119
Total liabilities		-		334,738		-		334,738

The fair value of financial instruments traded in active markets is based on quoted market prices at the end of reporting period. A market is regarded as active if quoted prices are readily and regularly available from an exchange, dealer, broker, industry group, pricing service, or regulatory agency, and those prices represent actual and regularly occurring market transactions on an arm's length basis. The quoted market price used for financial assets held by the Company and its subsidiaries is the current bid price. These instruments are included in level 1. As at 31 December 2017, instruments included in level 1 are equity instruments in listed securities classified as available for sale.

The fair value of financial instruments that are not traded in an active market is determined by using valuation techniques. These valuation techniques maximize the use of relevant observable inputs and minimize the use of unobservable inputs. If all significant inputs required to fair value an instrument are observable, the instrument is included in level 2.

If one or more of the significant inputs is not based on observable market data, the instrument is included in level 3.

Specific valuation techniques used to value financial instruments include:

• The forward exchange contracts and fuel oil swaps are both valued using quoted market prices or dealer quotes for similar instruments.

• The fair value of interest rate swaps is calculated as the present value of the estimated future cash flows based on observable yield curves.

• The contingent consideration is valued using discounted cash flow. The valuation model considers the present value of the expected future receivables discounted using a risk-adjusted discounted rate. The expected future contingent considerations are determined by considering the expected performance of acquired entities through 31 December 2019, representing the measurement period for contingent consideration

Instruments included in level 2 comprise forward exchange contracts, fuel oil swaps and interest rate swaps.

During the year ended 31 December 2017, there are no transfers of financial instruments between level 1 and level 2, or transfers into or out of level 3.

The movements during the period in the balance of the Level 3 fair value measurements are as follows:

	2017
Contingent consideration
Beginning of the year		-
Movement:
Gains on fair value changes		859,547
End of the year		859,547
Total gains for the period included in profit or loss for assets held at the end of the reporting period		859,547

(ii) Fair value disclosures

The carrying value less provision for doubtful accounts of accounts receivable, other receivables and assets, accounts payable and other liabilities, short-term bonds and short-term loans approximated their fair values. The fair value of financial liabilities for disclosure purposes is estimated by discounting the future contractual cash flows at the current market interest rate that is available to the Company and its subsidiaries for similar financial instruments.

The estimated fair value of long-term loans and long-term bonds (both including current maturities) was approximately RMB125.00 billion and RMB19.81billion as at 31 December 2017 (2016: RMB74.48 billion and RMB15.71 billion), respectively. The aggregate book value of these liabilities was approximately RMB125.13 billion and RMB19.99 billion as at 31 December 2017 (2016: RMB74.55 billion and RMB15.48 billion), respectively.

(c) Capital risk management

The objectives of the Company and its subsidiaries when managing capital are to safeguard the ability of the Company and its subsidiaries in continuing as a going concern in order to provide returns for shareholders and benefits for other stakeholders and to maintain an optimal capital structure to reduce the cost of capital.

The Company and its subsidiaries monitor capital by using debt ratio analysis. This ratio is calculated as total liabilities (sum of current liabilities and non-current liabilities) divided by total assets as shown in the consolidated statement of financial position. During 2017, the strategy of the Company and its subsidiaries remained unchanged from 2016. The debt ratio of the Company and its subsidiaries as at 31 December 2017 was 72.86% (2016: 67.54%).

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Critical accounting estimates and judgments

12 Months Ended

Dec. 31, 2017

Critical accounting estimates and judgments [abstract]

Critical accounting estimates and judgments

4 Critical accounting estimates and judgments

Estimates and judgments are continually evaluated and are based on historical experience and other factors, including expectations of future events that are believed to be reasonable under the circumstances.

The Company and its subsidiaries make estimates and assumptions concerning the future. The resulting accounting estimates will, by definition, seldom equal the related actual results. The estimates and assumptions that have a significant risk of causing a material adjustment to the carrying amounts of assets and liabilities within the next financial year are discussed below.

(a) Accounting estimates on impairment of goodwill and power generation license

The Company and its subsidiaries perform test annually whether goodwill and power generation license have suffered any impairment in accordance with the accounting policies stated in Note 2(j). The recoverable amounts of CGU or CGUs to which goodwill and the power generation license have been allocated are determined based on value-in-use calculations. These calculations require the use of estimates (Note 12 and 15). It is reasonably possible, based on existing knowledge, that outcomes within the next financial period that are different from assumptions could require a material adjustment to the carrying amounts of goodwill and power generation license..

For goodwill allocated to CGUs in the PRC, changes of assumptions in tariff and fuel price could have affected the results of goodwill impairment assessment. As at 31 December 2017, if tariff had decreased by 1% or 5% from management's estimates with other variables constant with the expectations, the Company and its subsidiaries would have to recognize impairment against goodwill by approximately RMB681 million and RMB3,879 million, respectively. If fuel price had increased by 1% or 5% from the management's estimates with other variables constant with the expectations, the Company and its subsidiaries would have to recognize impairment against goodwill by RMB320 million and RMB2,535 million, respectively.

For the sensitivity analysis of power generation license and goodwill of Tuas Power, please refer to Note 12 and 15.

(b) Useful life of power generation license

As at year end, management of the Company and its subsidiaries assess whether the estimated useful life for its power generation license is indefinite. This assessment is based on the expected renewal of power generation license without significant restriction and cost, together with the consideration on related future cash flows generated and the expectation of continuous operations. Based on existing knowledge, outcomes within the next financial period that are different from assumptions could require a change to the carrying amount of power generation license.

(c) Useful lives of property, plant and equipment

Management of the Company and its subsidiaries determines the estimated useful lives of property, plant and equipment and respective depreciation. The accounting estimate is based on the expected wears and tears incurred during power generation. Wears and tears can be significantly different following renovation each time. When the useful lives differ from the original estimated useful lives, management will adjust the estimated useful lives accordingly. It is possible that the estimates made based on existing experience are different to the actual outcomes within the next financial period and could cause a material adjustment to the depreciation and carrying amount of property, plant and equipment.

(d) Estimated impairment of other non-current assets

The Company and its subsidiaries test whether property, plant and equipment, land use rights and mining rights suffered from impairment whenever an impairment indication exists. In accordance with Note 2(j), an impairment loss is recognized for the amount by which the carrying amount of the asset exceeds its recoverable amount. It is reasonably possible, based on existing knowledge, that outcomes within the next financial period that are different from assumptions could require a material adjustment to the carrying amount of property, plant and equipment, land use rights and mining rights.

Changes of assumptions in tariff and fuel price will affect the result of property, plant and equipment, land use rights and mining rights impairment assessment. For power plants assets that are subject to impairment testing, as at 31 December 2017, if tariff had decreased by 1% or 5% from management's estimates with other variables constant with the expectations, the Company and its subsidiaries would have to further recognize impairment against property, plant and equipment and land use rights by approximately RMB165 million and RMB1,165 million, respectively. If fuel price had increased by 1% or 5% from the management's estimates with other variables constant with the expectations, the impairment against property, plant and equipment, land use rights and mining rights of the Company and its subsidiaries would increase totaling by approximately RMB45 million and RMB478 million, respectively.

(e) Approval of construction of new power plants

The receiving of the ultimate approvals from National Development and Reform Commission ("NDRC") on certain power plant construction projects of the Company and its subsidiaries is a critical estimate and judgment of the directors. Such estimates and judgments are based on initial approval documents received as well as their understanding of the projects. Based on historical experience, the directors believe that the Company and its subsidiaries will receive final approvals from NDRC on the related

power plant projects. Deviation from the estimate and judgment could result in significant adjustment to the carrying amount of non-current assets.

(f) Deferred tax assets

The Company and its subsidiaries recognized the deferred tax assets to the extent that it is probable that future taxable profit will be available against which the asset can be utilized, using tax rates that are expected to be applied in the period when the asset is recovered. The management assesses the deferred tax assets based on the expected amount and timing of future taxable profit, the enacted tax laws and applicable tax rates. It is reasonably possible, based on existing knowledge, the outcomes within the next financial period that are different from assumptions could require a material adjustment to the carrying amount of deferred tax assets.

(g) Business combination

For the business combinations undertaken by the Company, the Company recognises the assets acquired and the liabilities assumed based on their estimated fair value on the date of acquisition. Any excess of purchase consideration over the estimated fair values of acquired identifiable net assets is recorded goodwill (Note 2(i)). The contingent consideration of the Company in the business combination is recognised as a financial asset at fair value through profit or loss (included in other non-current assets and other receivables and assets).

The Company makes judgements and estimates in relation to the fair value of the assets acquired and the liabilities assumed and the contingent consideration from business combination. The fair value of acquired assets and assumed liabilities and the contingent consideration are determined using valuation techniques. Estimating the fair value assigned to each class of acquired assets and assumed liabilities and the contingent consideration are based on expectations and assumptions, in particular in relation to the future sales volumes and the related revenue growth rate, future on-grid tariffs, future capital expenditure, future fuel prices, future other operating costs and the discount rates applied.

A change in the amount allocated to identifiable net assets would have an offsetting effect on the amount of goodwill recognised from the acquisition and would change the amount of depreciation and amortisation expense recognised related to those identifiable net assets. And outcomes within the next financial period that are different from assumptions could require a material adjustment to the carrying amounts of contingent consideration.

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Revenue and segment information

12 Months Ended

Dec. 31, 2017

Revenue and segment information [abstract]

Revenue and segment information

5 Revenue and segment information

Revenues recognized during the year are as follows:

	For the year ended 31 December
	2017		2016		2015
Sales of power and heat		148,925,442		112,794,536		127,849,408
Sales of coal		1,143,299		2,909		6,839
Port service		232,360		237,347		211,685
Transportation service		73,830		105,505		104,721
Others		2,084,513		673,939		732,220
Total		152,459,444		113,814,236		128,904,873

Directors and certain senior management of the Company perform the function as the chief operating decision maker (collectively referred to as the "senior management"). The senior management reviews the internal reporting of the Company and its subsidiaries in order to assess performance and allocate resources. The Company has determined the operating segments based on these reports. The reportable segments of the Company are the PRC power segment, Singapore segment and all other segments (mainly including port and transportation operations). No operating segments have been aggregated to form a reportable segment.

Senior management assesses the performance of the operating segments based on a measure of profit before income tax expense under China Accounting Standard for Business Enterprises ("PRC GAAP") excluding dividend income received from available-for-sale financial assets, gains on disposal of available-for-sale financial assets and operating results of the centrally managed and resource allocation functions of headquarters ("Segment results"). Other information provided, except as noted below, to the senior management of the Company is measured under PRC GAAP.

Segment assets exclude prepaid income tax, deferred income tax assets, available-for-sale financial assets and assets related to the centrally managed and resource allocation functions of headquarters that are not attributable to any operating segment ("corporate assets"). Segment liabilities exclude current income tax liabilities, deferred income tax liabilities and liabilities related to the centrally managed and resource allocation functions of headquarters that are not attributable to any operating segment ("corporate liabilities"). These are part of the reconciliation to total assets and liabilities of consolidated statement of financial position.

All sales among the operating segments have been eliminated as internal transactions when preparing consolidated financial statements.

	(Under PRC GAAP)
	PRC powersegment			Singaporesegment			All othersegments			Total
For the year ended 31 December 2017
Total revenue		142,067,629			10,078,031			694,405			152,840,065
Inter-segment revenue		-			-			(380,621	)		(380,621	)
Revenue from external customers		142,067,629			10,078,031			313,784			152,459,444
Segment results		2,417,073			(577,458	)		302,191			2,141,806
Interest income		126,927			70,756			1,223			198,906
Interest expense		(9,026,064	)		(450,928	)		(145,112	)		(9,622,104	)
Impairment loss		(1,167,751	)		(994	)		(19,742	)		(1,188,487	)
Depreciation and amortization		(18,081,299	)		(856,979	)		(189,764	)		(19,128,042	)
Net loss on disposal of non-current assets		(580,345	)		(995	)		(3	)		(581,343	)
Share of profits less losses of associates and joint ventures		(7,318	)		-			307,923			300,605
Income tax expense		(1,667,234	)		99,150			(5,386	)		(1,573,470	)

							(Under PRC GAAP)
	PRC power segment			Singaporesegment			All other segments			Total
For the year ended 31 December 2016 (Restated*)
Total revenue		129,101,375			8,758,822			634,965			138,495,162
Inter-segment revenue		-			-			(344,866	)		(344,866	)
Revenue from external customers		129,101,375			8,758,822			290,099			138,150,296
Segment results		17,633,734			(282,703	)		(38,433	)		17,312,598
Interest income		102,265			69,672			623			172,560
Interest expense		(7,952,640	)		(481,263	)		(137,825	)		(8,571,728	)
Impairment (loss)/reversal		(1,410,733	)		899			(8,475	)		(1,418,309	)
Depreciation and amortization		(17,320,753	)		(778,426	)		(203,493	)		(18,302,672	)
Net loss on disposal of non-current assets		(693,091	)		(172	)		(14,303	)		(707,566	)
Share of profits less losses of associates and joint ventures		973,982			-			73,415			1,047,397
Income tax expense		(4,610,591	)		44,135			57,489			(4,508,967	)
For the year ended 31 December 2015 (Restated*)
Total revenue		143,679,910			10,143,793			588,266			154,411,969
Inter-segment revenue		-			-			(266,701	)		(266,701	)
Revenue from external customers		143,679,910			10,143,793			321,565			154,145,268
Segment results		27,473,279			(313,253	)		(232,956	)		26,927,070
Interest income		115,378			66,898			501			182,777
Interest expense		(9,526,290	)		(452,034	)		(163,325	)		(10,141,649	)
Impairment (loss)/reversal		(3,112,370	)		1,744			(178,131	)		(3,288,757	)
Depreciation and amortization		(16,719,037	)		(772,003	)		(245,936	)		(17,736,976	)
Net (loss)/gain on disposal of non-current assets		(517,820	)		22,450			(1	)		(495,371	)
Share of profits less losses of associates and joint ventures		1,247,293			-			18,247			1,265,540
Income tax expense		(7,121,207	)		254,772			14,397			(6,852,038	)

				(Under PRC GAAP)
	PRC power segment			Singaporesegment			All other segments			Total
31 December 2017
Segment assets		334,379,104			27,817,680			9,978,885			372,175,669
Including:
Additions to non-current assets (excluding financial assets and deferred income tax assets)		24,447,658			260,240			328,061			25,035,959
Investments in associates		12,577,836			-			2,919,860			15,497,696
Investments in joint ventures		1,457,247			-			1,025,534			2,482,781
Segment liabilities		(264,115,887	)		(14,000,442	)		(3,026,229	)		(281,142,558	)
31 December 2016 (Restated*)
Segment assets		331,939,958			28,141,718			11,789,504			371,871,180
Including:
Additions to non-current assets (excluding financial assets and deferred income tax assets)		27,430,205			230,974			854,484			28,515,663
Investments in associates		12,527,711			-			2,880,368			15,408,079
Investments in joint ventures		2,202,002			-			790,610			2,992,612
Segment liabilities		(246,200,555	)		(14,027,606	)		(5,620,515	)		(265,848,676	)

A reconciliation of revenue from external customers to operating revenue is provided as follows:

	For the year ended 31 December
	2017		2016(Restated*)			2015(Restated*)
Revenue from external customers
(PRC GAAP)		152,459,444		138,150,296			154,145,268
Reconciling item:
Impact of restatement under PRC GAAP in relation to business combination under common control*(Note 40)		-		(24,336,060	)		(25,240,395	)
Operating revenue per IFRS consolidated statement of comprehensive income		152,459,444		113,814,236			128,904,873

A reconciliation of segment result to profit before income tax expense is provided as follows:

	For the year ended 31 December
	2017			2016(Restated*)			2015(Restated*)
Segment results (PRC GAAP)		2,141,806			17,312,598			26,927,070
Reconciling items:
Loss related to the headquarter		(170,210	)		(699,054	)		(327,262	)
Investment income from China Huaneng Finance Co., Ltd. ("Huaneng Finance")		143,794			132,018			135,971
Dividend income of available-for-sale financial assets		124,918			105,337			99,071
Gains on disposal of available-for-sale financial asset		1,479,732			932,738			4,282
Impact of restatement under PRC GAAP in relation to business combination under common control*(Note 40)		-			(3,417,300	)		(3,454,005	)
Impact of other IFRS adjustments**		(918,307	)		(553,199	)		(427,077	)
Profit before income tax expense per IFRS consolidated statement of comprehensive income		2,801,733			13,813,138			22,958,050

Reportable segments' assets are reconciled to total assets as follows:

	As at 31 December
	2017		2016(Restated*)
Total segment assets (PRC GAAP)		372,175,669		371,871,180
Reconciling items:
Investment in Huaneng Finance		1,336,777		1,314,603
Deferred income tax assets		2,980,303		2,447,648
Prepaid income tax		150,838		204,182
Available-for-sale financial assets		1,654,993		3,560,928
Corporate assets		395,148		360,854
Impact of restatement under PRC GAAPin relation to business combinationunder common control * (Note 40)		-		(70,341,769	)
Impact of other IFRS adjustments**		17,895,783		5,422,113
Total assets per IFRS consolidated statement offinancial position		396,589,511		314,839,739

Reportable segments' liabilities are reconciled to total liabilities as follows:

	As at 31 December
	2017			2016(Restated*)
Total segment liabilities (PRC GAAP)		(281,142,558	)		(265,848,676	)
Reconciling items:
Current income tax liabilities		(430,703	)		(572,515	)
Deferred income tax liabilities		(1,283,950	)		(1,429,859	)
Corporate liabilities		(3,632,847	)		(4,717,617	)
Impact of restatement under PRC GAAPin relation to business combinationunder common control * (Note 40)		-			59,917,072
Impact of other IFRS adjustments**		(2,484,849	)		(1,407	)
Total liabilities per IFRS consolidated statement of financial position		(288,974,907	)		(212,653,002	)

Other material items:

	Reportable segment total			Headquarters			Investment income from Huaneng Finance		Impact of restatement under PRC GAAP in relation to business combination under common control			Impact of other IFRS adjustments**			Total
For the year ended 31 December 2017
Total revenue		152,459,444			-			-		-			-			152,459,444
Interest expense		(9,622,104	)		(126,900	)		-		-			-			(9,749,004	)
Depreciation and amortization		(19,128,042	)		(38,819	)		-		-			(1,468,972	)		(20,635,833	)
Impairment loss		(1,188,487	)		-			-		-			1,275			(1,187,212	)
Share of profits less losses of associates and joint ventures		300,605			-			143,794		-			(19,184	)		425,215
Net (loss)/gain on disposal of non-current assets		(581,343	)		3,174			-		-			(38,287	)		(616,456	)
Income tax expense		(1,573,470	)		-			-		-			355,944			(1,217,526	)
For the year ended 31 December 2016 (Restated*)
Total revenue		138,150,296			-			-		(24,336,060	)		-			113,814,236
Interest expense		(8,571,728	)		(131,244	)		-		1,885,446			-			(6,817,526	)
Depreciation and amortization		(18,302,672	)		(48,934	)		-		3,533,820			(344,929	)		(15,162,715	)
Impairment loss		(1,418,309	)		-			-		213,351			-			(1,204,958	)
Share of profits less losses of associates and joint ventures		1,047,397			-			132,018		133,694			(14,220	)		1,298,889
Net loss on disposal of non-current assets		(707,566	)		(14	)		-		115,769			1,762			(590,049	)
Income tax expense		(4,508,967	)		-			-		928,854			114,962			(3,465,151	)
For the year ended 31 December 2015 (Restated*)
Total Revenue		154,145,268			-			-		(25,240,395	)		-			128,904,873
Interest expense		(10,141,649	)		(149,259	)		-		2,345,174			-			(7,945,734	)
Depreciation and amortization		(17,736,976	)		(60,236	)		-		3,474,072			(394,473	)		(14,717,613	)
Impairment loss		(3,288,757	)		-			-		198,604			-			(3,090,153	)
Share of profits less losses of associates and joint ventures		1,265,540			-			135,971		180,447			(55,983	)		1,525,975
Net loss on disposal of non-current assets		(495,371	)		(6	)		-		90,534			(33,478	)		(438,321	)
Income tax expense		(6,852,038	)		-			-		1,016,588			136,507			(5,698,943	)

* The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

** Other GAAP adjustments above primarily represented the classification adjustments and other adjustments. Other than the classification adjustments, the differences will be gradually eliminated following subsequent depreciation and amortization of related assets or the extinguishment of liabilities.

Geographical information (Under IFRS):

(i) External revenue generated from the following countries:

	For the year ended 31 December
	2017		2016		2015
PRC		142,381,413		105,055,414		118,761,080
Singapore		10,078,031		8,758,822		10,143,793
Total		152,459,444		113,814,236		128,904,873

The geographical location of customers is based on the location at which the electricity was transferred, goods were delivered and services provided.

(ii) Non-current assets (excluding financial assets and deferred income tax assets) are located in the following countries:

	As at 31 December
	2017		2016
PRC		319,534,533		249,155,921
Singapore		23,035,758		23,369,766
Total		342,570,291		272,525,687

The information on sales to major customers of the Company and its subsidiaries at amount equal to or more than 10% of external revenue is as follows:

In 2017, the revenue from grid companies under common control of State Grid Corporation of China within PRC power segment in total accounted for 76% of external revenue (2016: 74%, 2015: 81%). The sales from a subsidiary of State Grid Corporation of China at amount more than 10% of external revenue is as follows:

	For the year ended 31 December
	2017					2016					2015
	Amount		Proportion			Amount		Proportion			Amount		Proportion
State Grid Shandong Electric Power Company		28,659,891		19	%		12,649,224		11	%		14,855,655		12	%

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Profit before income tax expense

12 Months Ended

Dec. 31, 2017

Profit before income tax expense [abstract]

Profit before income tax expense

6 Profit before income tax expense

Profit before income tax expense was determined after charging/(crediting) the following:

	For the year ended 31 December
	2017			2016			2015
Total interest expense on borrowing		10,225,069			7,267,490			8,716,074
Less: amounts capitalized in property, plant and equipment		476,065			449,964			770,340
Interest expenses charged in consolidated statement of comprehensive income		9,749,004			6,817,526			7,945,734
Auditors' remuneration-audit services		64,160			43,610			41,640
Operating leases charge		364,756			331,496			313,723
Fuel		92,737,304			56,617,542			59,242,367
Depreciation of property, plant and equipment		20,180,830			14,815,620			14,411,632
Amortization of land use rights		341,125			225,707			213,206
Amortization of other non-current assets		113,878			121,388			92,775
Impairment loss of property, plant and equipment (Note 7)		1,046,195			1,063,735			1,047,641
Impairment loss of land use rights (Note 11)		108,590			51,981			-
Impairment loss of investment in an associate		-			-			178,131
Impairment loss of mining rights		-			-			760,296
Impairment loss of goodwill		-			-			1,105,649
Impairment loss of other non-current assets		5,008			-			-
Recognition/(reversal) of provision for
doubtful accounts		27,682			89,498			(3,392	)
(Reversal)/recognition of provision for inventory obsolescence		(263	)		(256	)		1,828
Net loss on disposals of non-current assets		616,456			590,049			438,321
Government grants		(421,912	)		(396,467	)		(696,735	)
Gain on a bargain purchase		-			(129,921	)		-
Included in other investment income
-Gains on disposal of available-for-sale financial asset (Note 10)		(1,479,732	)		(932,738	)		-
-Dividends on available-for-sale financial assets		(124,918	)		(103,037	)		(97,696	)
-Gains on disposal of subsidiaries*		(52,330	)		-			-
Included in (gain)/loss on fair value changes of financial assets/liabilities
-Contingent consideration of the business combination (Note 40)		(859,547	)		-			-
-Loss on fair value changes of trading derivatives		2,761			12,986			16,762

* For the disposals of Taishan Power Limited Company and Huaneng (Fujian) Harbour Limited Company with no interest being retained. The Company received consideration of RMB781 million and RMB222 Million respectively. The investment income of 52 million was recognized and the related non-controlling interests of RMB681 million and RMB186 million with the subsidiaries were derecognized.

Other operating expenses consist of impairment loss of property, plant and equipment, land use rights and other non-current assets, environmental protection expenses, substituted power arrangement expenses, insurance, gain on a bargain purchase, government grants and other miscellaneous expenses.

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Property, plant and equipment

12 Months Ended

Dec. 31, 2017

Property, plant and equipment [abstract]

Property, plant and equipment

7 Property, plant and equipment

	Dam			Port facilities			Buildings			Electric utility plant in service			Transport-ation facilities			Others			CIP			Total
As at 1 January 2016
Cost		1,856,144			3,860,009			8,306,471			327,827,738			980,290			5,809,400			23,851,697			372,491,749
Accumulated depreciation		(153,325	)		(436,215	)		(2,508,772	)		(138,852,591	)		(371,226	)		(3,366,838	)		-			(145,688,967	)
Accumulated impairment loss		(268,981	)		-			(68,931	)		(5,968,962	)		-			(81,328	)		(741,510	)		(7,129,712	)
Net book value		1,433,838			3,423,794			5,728,768			183,006,185			609,064			2,361,234			23,110,187			219,673,070
Year ended 31 December 2016
Beginning of the year		1,433,838			3,423,794			5,728,768			183,006,185			609,064			2,361,234			23,110,187			219,673,070
Reclassification		-			1,771			(492,558	)		495,841			759			(5,813	)		-			-
Business combination		-			-			8,098			303,854			-			2,977			4,576			319,505
Additions		-			1,770			127			418,812			-			122,519			18,839,102			19,382,330
Transfer from CIP		20,170			246,712			1,319,019			12,576,736			20,033			296,648			(14,479,318	)		-
Disposals/write-off		-			-			(68,945	)		(495,251	)		(26,477	)		(27,055	)		(193,357	)		(811,085	)
Depreciation charge		(32,987	)		(113,810	)		(255,882	)		(14,004,881	)		(48,720	)		(387,884	)		-			(14,844,164	)
Impairment charge		(41,423	)		-			(2,303	)		(1,005,367	)		-			(6,399	)		(8,243	)		(1,063,735	)
Currency translation differences		-			-			-			404,948			-			782			158			405,888
End of the year		1,379,598			3,560,237			6,236,324			181,700,877			554,659			2,357,009			27,273,105			223,061,809
As at 31 December 2016
Cost		1,876,314			4,116,914			9,056,858			341,195,395			875,630			6,041,783			28,022,858			391,185,752
Accumulated depreciation		(186,312	)		(556,677	)		(2,749,300	)		(152,408,524	)		(320,971	)		(3,596,546	)		-			(159,818,330	)
Accumulated impairment loss		(310,404	)		-			(71,234	)		(7,085,994	)		-			(88,228	)		(749,753	)		(8,305,613	)
Net book value		1,379,598			3,560,237			6,236,324			181,700,877			554,659			2,357,009			27,273,105			223,061,809
Year ended 31 December 2017
Beginning of the year		1,379,598			3,560,237			6,236,324			181,700,877			554,659			2,357,009			27,273,105			223,061,809
Reclassification		49,386			(404	)		52,047			(157,759	)		(4,357	)		61,087			-			-
Business combination (Note 40)		279,169			-			1,944,531			58,379,270			17,243			443,052			2,717,544			63,780,809
Additions		-			-			184			840,991			-			88,160			21,225,980			22,155,315
Transfer from CIP		15,355			114,688			342,285			20,283,508			288,554			145,705			(21,190,095	)		-
Disposals/write-off		-			(14,731	)		(30,837	)		(1,252,829	)		(3,907	)		(28,562	)		-			(1,330,866	)
Disposal of subsidiaries		-			(632,709	)		(101,169	)		(114,542	)		-			(153,096	)		(1,242,210	)		(2,243,726	)
Depreciation charge		(40,200	)		(111,529	)		(339,630	)		(19,155,852	)		(59,022	)		(494,932	)		-			(20,201,165	)
Impairment charge		(45,619	)		-			(1,651	)		(754,753	)		-			(2,503	)		(241,669	)		(1,046,195	)
Currency translation differences		-			-			-			151,249			-			263			600			152,112
End of the year		1,637,689			2,915,552			8,102,084			239,920,160			793,170			2,416,183			28,543,255			284,328,093
As at 31 December 2017
Cost		2,220,224			3,358,811			11,173,669			418,360,698			1,155,392			5,972,688			29,534,677			471,776,159
Accumulated depreciation		(226,512	)		(443,259	)		(3,019,198	)		(170,525,898	)		(362,222	)		(3,523,292	)		-			(178,100,381	)
Accumulated impairment loss		(356,023	)		-			(52,387	)		(7,914,640	)		-			(33,213	)		(991,422	)		(9,347,685	)
Net book value		1,637,689			2,915,552			8,102,084			239,920,160			793,170			2,416,183			28,543,255			284,328,093

Interest capitalization

Interest expense of approximately RMB476 million (2016: RMB450 million) arising on borrowings for the construction of property, plant and equipment was capitalized during the year and was included in 'Additions' in property, plant and equipment. The weighted average capitalization rate was approximately 4.54% (2016: 4.52%) per annum.

Impairment

In 2017, impairment losses for certain property, plant and equipment and land use rights of approximately RMB1,046 million and RMB109 million have been recognized, respectively. Factors leading to the impairment include lower than expected utilization hours of a subsidiary due to long idle hours of its power generating units and the coal-fire projects in progress was aborted; lower than expected operating results of three subsidiaries in 2017 due to oversupply and fierce competition within the electricity market in the provinces, as well as low profitability of a hydropower plant, a coal-fire project in progress of a subsidiary was aborted as a result of relevant regulation. Discount rates of 9.50%, 9.98%, 9.89%, 14.74% and 9.14% were adopted in the value in use model in the determination of the recoverable amounts for the four coal-fired power plants and the hydropower plant respectively. In addition, as a result of the low demand of coal-fired power in local market, management estimated the possibility of further development of a coal-fired power project was remote, therefore the project under construction with a carrying value of RMB242 million was fully impaired in 2017.

In 2016, impairment losses for certain property, plant and equipment and land use rights of approximately RMB1,064 million and RMB52 million have been recognized, respectively. Factors leading to the impairment of operating projects primarily included lower utilization hours and tariff of two coal-fired power plants as a result of over supply of electricity in two provinces, as well as low utilization hours of a hydropower plant as a result of low level of water inflow. Discount rates of 8.06%, 8.97% and 8.12% were adopted in the value in use model in the determination of the recoverable amounts for the two coal-fired power plants and the hydropower plant respectively.

Property, plant and equipment held under finance leases

As at 31 December 2017, certain property, plant and equipment with original cost of RMB3,312 million (2016: RMB2,075 million) were held under finance leases, which mainly included power generation assets, ships and pipeline assets.

Security

As at 31 December 2017, certain property, plant and equipment were secured to a bank as collateral against a long-term loan (Note 24).

Buildings without ownership certificate

At 31 December 2017, the Company and its subsidiaries were in the process of applying for the ownership certificate for certain buildings (buildings for power generation process were included in electric utility plant in service) with an aggregate net book value of RMB10,800 million (2016: RMB7,871 million). The management are of the opinion that the Company and its subsidiaries are entitled to lawfully and validly occupy and use of the above mentioned buildings.

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Investments in associates and joint ventures

12 Months Ended

Dec. 31, 2017

Investments in associates and joint ventures [abstract]

Investments in associates and joint ventures

8 Investments in associates and joint ventures

	2017			2016
Beginning of the year		19,632,113			19,745,192
Capital injections in associates and joint ventures		301,916			276,118
Business combination (Note 40(a))		1,021,566			-
Transfer from available-for-sale		91,800			-
Transfer to subsidiaries		(736,725	)		-
Share of net profit less loss		425,215			1,298,889
Share of other comprehensive income/(loss)		121,208			(180,572	)
Currency translation differences		(142,226	)		-
Dividends		(835,279	)		(1,507,514	)
Elimination of unrealized profits on transactions with equity-method investees		(361,965	)		-
End of the year		19,517,623			19,632,113

As at 31 December 2017, investments in associates and joint ventures of the Company and its subsidiaries are unlisted except for Shenzhen Energy Corporation Limited ("SECL") which is listed on the Shenzhen Stock Exchange. The following list contains only the particulars of material associates and joint ventures:

Name	Country of incorporation	Registered capital	Business nature and scope of operation	Percentage of equity interest held
				Direct	Indirect1
Associates:
SECL*	PRC	RMB2,642,994,398	Energy and investment in related industries	25.02%	-
Hebei Hanfeng Power Generation Limited Liability Company ("Hanfeng Power")	PRC	RMB1,975,000,000	Power generation	40%	-
Huaneng Finance	PRC	RMB5,000,000,000	Provision for financial service including fund deposit services, lending, finance lease arrangements, notes discounting and entrusted loans and investment arrangement within Huaneng Group	20%	-
Huaneng Sichuan Hydropower Co., Ltd. ("Sichuan Hydropower")	PRC	RMB1,469,800,000	Development, investment, construction, operation and management of hydropower	49%	-
China Huaneng Group Fuel Co., Ltd. ("Huaneng Group Fuel Company") **	PRC	RMB3,000,000,000	Wholesale of coal, import and export of coal	50%	-
Hainan Nuclear Power Limited Liability Company("Hainan Nuclear")	PRC	RMB4,831,460,000	Construction and operation of nuclear power plants; production and sales of electricity and related products	30%	-
Joint ventures:
Shanghai Time Shipping Co., Ltd. ("Shanghai Time Shipping")	PRC	RMB1,200,000,000	International and domestic sea transportation	50%	-
Jiangsu Nantong Power Generation Co., Ltd.("Jiangsu Nantong Power")	PRC	RMB1,596,000,000	Operation and Management of power generation plants and transportation related projects	-	35%
Huaneng Shandong Ruyi (Hongkong) Energy Co., Ltd ("Ruyi (Hongkong) Energy")***	Hong Kong	10,000 Shares	Investment in electricity and other related energy projects	-	40%
Shandong Luyi Power International Limited Company ("Luyi Power")***	PRC	RMB35,000,000	Contracting overseas projects and international bidding projects, mechanical and electrical equipment installation engineering and electric power engineering	-	40%

¹ The indirect percentage of equity interest held represents the effective ownership interest of the Company and its subsidiaries.

* As at 31 December 2017, the fair value of the Company's shares in SECL was RMB6,010 million (2016: RMB6,813 million).

** In accordance with the articles of the association of the investee, the Company could only exercise significant influence on the investee and therefore accounts for the investment under the equity method.

*** Ruyi (Hongkong) Energy and Luyi Power were established for Pakistan Sahiwal Project, which are jointly controlled by Huaneng Shandong Power Generation Co., Ltd. and Shandong Ruyi Technology Group Co., Ltd.

All the above associates and joint ventures are accounted for under the equity method in the consolidated financial statements.

Summarized financial information of the material associates, adjusted for any differences in accounting policies and acquisition adjustments, and reconciliation to the carrying amounts in the consolidated financial statements, are disclosed below:

	Sichuan Hydropower						SECL						Huaneng Finance						Hanfeng Power						Huaneng GroupFuel Company						Hainan Nuclear
	2017			2016			2017			2016			2017			2016			2017			2016			2017			2016			2017			2016
Gross amounts of the associates'
Current assets		1,113,579			1,245,157			16,444,934			14,021,440			25,535,504			13,919,342			650,055			806,432			4,327,146			4,642,797			2,497,765			2,608,909
Non-current assets		14,590,921			14,676,021			56,079,321			46,584,060			20,786,497			18,055,386			2,246,412			2,616,639			4,102,426			4,269,520			22,490,989			23,939,921
Current liabilities		(2,477,362	)		(2,410,462	)		(20,447,190	)		(16,564,310	)		(39,588,213	)		(25,344,346	)		(795,815	)		(1,045,876	)		(1,778,075	)		(1,939,210	)		(3,409,360	)		(3,330,581	)
Non-current liabilities		(8,661,852	)		(8,901,599	)		(28,491,540	)		(19,395,060	)		(49,904	)		(57,368	)		(27,443	)		(37,103	)		(3,119,462	)		(3,432,326	)		(17,252,794	)		(18,356,288	)
Equity		4,565,286			4,609,117			23,585,525			24,646,130			6,683,884			6,573,014			2,073,209			2,340,092			3,532,035			3,540,781			4,326,600			4,861,961
-Equity attributable to shareholders		3,400,953			3,449,824			22,285,077			21,610,140			6,683,884			6,573,014			2,073,209			2,340,092			3,400,344			3,378,952			4,326,600			4,861,961
-Non-controlling interests		1,164,333			1,159,293			1,300,448			3,035,990			-			-			-			-			131,691			161,829			-			-
Revenue		2,247,781			2,053,327			13,908,949			11,427,830			1,393,211			1,093,637			2,073,209			2,192,445			17,166,036			14,356,915			2,504,379			1,897,190
Profit/(loss) from continuing operations attributable to shareholders		222,403			173,220			747,657			1,362,028			718,970			660,089			52,361			290,470			48,876			102,363			(535,361	)		18,618
Other comprehensive (loss)/income attributable to shareholders		-			-			521,965			(638,680	)		(28,099	)		(125,840	)		-			-			(6,654	)		8,723			-			-
Total comprehensive income/(loss) attributable to shareholders		222,403			173,220			1,269,622			723,348			690,871			534,249			52,361			290,470			42,222			111,086			(535,361	)		18,618
Dividend received from the associates		132,923			145,392			148,761			198,348			116,000			122,000			127,698			174,366			10,000			10,000			-			-
Reconciled to the interests in the associates
Gross amounts of net assets attributable to shareholders of the associate		3,400,953			3,449,824			22,285,077			21,610,140			6,683,884			6,573,014			2,073,209			2,340,092			3,400,344			3,378,952			4,326,600			4,861,961
The Company's effective interest		49	%		49	%		25.02	%		25.02	%		20	%		20	%		40	%		40	%		50	%		50	%		30	%		30	%
The Company's share of net assets attributable to shareholders of the associate		1,666,467			1,690,414			5,574,612			5,405,776			1,336,777			1,314,603			829,284			936,037			1,700,172			1,689,476			1,297,980			1,458,588
Impact of adjustments		207,586			207,586			1,161,810			1,161,810			-			-			293,082			293,082			16,521			16,521			14,076			14,076
Carrying amount in the consolidated financial statements		1,874,053			1,898,000			6,736,422			6,567,586			1,336,777			1,314,603			1,122,366			1,229,119			1,716,693			1,705,997			1,312,056			1,472,664

Summarized financial information of material joint ventures adjusted for any differences in accounting policies and acquisition adjustment, and reconciliation to the carrying amount in the consolidated financial statements, are disclosed below:

	Shanghai Time Shipping						Jiangsu Nantong Power						Pakistan Sahiwal Project Related Investment
	2017			2016			2017			2016			2017
Gross amounts of joint ventures'
Current assets		665,410			883,120			656,720			815,359			3,069,065
Non-current assets		4,663,530			5,335,409			5,739,860			6,075,100			9,775,693
Current liabilities		(3,316,709	)		(3,177,881	)		(2,939,371	)		(2,600,258	)		(1,955,211	)
Non-current liabilities		(617,437	)		(1,506,076	)		(1,374,656	)		(1,931,219	)		(8,738,121	)
Equity		1,394,794			1,534,572			2,082,553			2,358,982			2,151,426
Included in the above assets and liabilities:
Cash and cash equivalents		96,528			203,018			362,214			96,501			618,105
Current financial liabilities (excluding trade and other payables and provisions)		(2,987,937	)		(2,681,857	)		(2,404,331	)		(2,270,601	)		(1,482,269	)
Non-current financial liabilities (excluding trade and other payables and provisions)		(617,437	)		(1,506,076	)		(1,352,000	)		(1,931,219	)		(8,738,121	)
Revenue		3,532,065			3,561,091			3,451,983			3,354,545			2,321,510
(Loss)/profit from continuing operations		(139,780	)		1,212			271,364			608,660			(72,227	)
Other comprehensive loss		-			-			-			-			(284,452	)
Total comprehensive (loss)/income		(139,780	)		1,212			271,364			608,660			(356,679	)
Dividend received in cash from the joint ventures		-			275,000			724,453			-			-
Included in the above profit:
Depreciation and amortization		317,133			340,826			396,500			393,221			63,122
Interest income		1,406			985			1,810			2,313			10
Interest expense		157,851			149,748			130,028			128,224			104,467
Income tax expense		(45,741	)		500			92,294			194,915			224,146
Reconciled to the interest in the joint venture:
Gross amounts of net assets		1,394,794			1,534,572			2,082,553			2,358,982			2,151,426
The Company and its subsidiaries' effective interest		50	%		50	%		50	%		50	%		50	%
The Company and its subsidiaries' share of net assets		697,397			767,286			1,041,277			1,179,491			1,075,713
Impact of adjustments		18,324			18,324			-			-			(361,965	)
Carrying amount in the consolidated financial statements		715,721			785,610			1,041,277			1,179,491			713,748

Aggregate information of associates and joint ventures that are not individually material:

	2017		2016
Aggregate carrying amount of individually immaterial associates and joint ventures in the consolidated financial statements		2,948,510		3,479,043
Aggregate amounts of the Company and its subsidiaries' share of those associates and joint ventures Profit from continuing operations		70,965		263,392
Total comprehensive income		70,965		263,392

As at 31 December 2017, the Company's share of losses of an associate and a joint venture exceeded its interest in the associate and the joint venture and the unrecognized further losses amounted to RMB185 million (2016: RMB163 million).

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Investments in subsidiaries

12 Months Ended

Dec. 31, 2017

Investments in subsidiaries [abstract]

Investments in subsidiaries

9 Investments in subsidiaries

As at 31 December 2017, the investments in subsidiaries of the Company and its subsidiaries, all of which are unlisted, are as follows:

(i) Subsidiaries acquired through establishment or investment

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting
Huaneng International Power Fuel Limited Liability Company	PRC	held directly	RMB 200,000,000	Wholesale of coal	100%	100%
Huaneng Shanghai Shidongkou Power Generation Limited Liability Company ("Shidongkou Power")(i)	PRC	held directly	RMB 1,179,000,000	Power generation	50%	100%
Huaneng Nantong Power Generation Limited Liability Company	PRC	held directly	RMB 798,000,000	Power generation	70%	70%
Huaneng Yingkou Co-generation Limited Liability Company	PRC	held directly	RMB 844,030,000	Production and sales of electricity and heat sale of coal ash and lime	100%	100%
Huaneng Hunan Xiangqi Hydropower Co., Ltd.	PRC	held directly	RMB 328,000,000	Construction, operation and management of hydropower plants and related projects	100%	100%
Huaneng Zuoquan Coal-fired Power Generation Limited Liability Company	PRC	held directly	RMB 960,000,000	Construction, operation and management of electricity projects; Development and utilization of clean energy resources	80%	80%
Huaneng Kangbao Wind Power Utilization Limited Liability Company	PRC	held directly	RMB 407,200,000	Construction, operation and management of wind power plants and related projects; solar power generation	100%	100%
Huaneng Jiuquan Wind Power Generation Co., Ltd.	PRC	held directly	RMB 2,600,000,000	Construction, operation and management of wind power generation and related projects	100%	100%
Huaneng Jiuquan II Wind Power Generation Co., Ltd.	PRC	held directly	RMB 10,000,000	Construction, operation and management of wind power generation and related projects	100%	100%
Huaneng Wafangdian Wind Power Generation Co., Ltd.	PRC	held directly	RMB 50,000,000	Construction, operation and management of wind power generation and related projects	100%	100%
Huaneng Changtu Wind Power Generation Co., Ltd.	PRC	held directly	RMB 50,000,000	Construction, operation and management of wind power generation and related projects	100%	100%
Huaneng Rudong Wind Power Generation Co., Ltd.	PRC	held directly	RMB 90,380,000	Operation, management of wind power generation projects	90%	90%
Huaneng Guangdong Haimen Port Limited Liability Company	PRC	held directly	RMB 331,400,000	Loading, warehousing and conveying services, providing facility services and water transportation services	100%	100%
Huaneng Taicang Port Limited Liability Company	PRC	held directly	RMB 600,000,000	Port provision, cargo loading and storage	85%	85%

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng Taicang Power Generation Co., Ltd.	PRC	held directly	RMB 804,146,700	Power generation	75%	75%
Huaneng Huaiyin II Power Generation Limited Company	PRC	held directly	RMB 930,870,000	Power generation	63.64%	63.64%
Huaneng Xindian Power Generation Co., Ltd.	PRC	held directly	RMB 465,600,000	Power generation	95%	95%
Huaneng Shanghai Combined Cycle Power Limited Liability Company	PRC	held directly	RMB 699,700,000	Power generation	70%	70%
Huaneng Yumen Wind Power Generation Co., Ltd.	PRC	held directly	RMB 719,170,000	Construction, operation and management of wind power generation and related projects	100%	100%
Huaneng Qingdao Co-generation Limited Company	PRC	held directly	RMB 214,879,000	Construction, operation and management of co-generation power plants and related projects	100%	100%
Huaneng Tongxiang Combined Cycle Co-generation Co., Ltd.	PRC	held directly	RMB 300,000,000	Production and sales of electricity and heat; investment in combined cycle co-generation industries	95%	95%
Huaneng Eastern Yunnan Energy Mine Construction Co., Ltd.	PRC	held indirectly	RMB 10,000,000	Mine engineering, construction engineering, equipment installation engineering	100%	100%
Huaneng Nanjing Combined Cycle Co-generation Co., Ltd.	PRC	held directly	RMB 582,000,000	Construction, operation and management of power plants and related projects	60%	60%
Huaneng Shantou Haimen Power Generation Limited Liability Company	PRC	held directly	RMB 1,508,000,000	Construction, operation and management of power plants and related projects	80%	80%
Huaneng Chongqing Liangjiang Power Generation Limited Liability Company("Liangjiang Power")	PRC	held directly	RMB 726,600,000	Construction, operation and management of natural gas power plants and related projects	90%	90%
Chongqing Huaqing Energy Co., Ltd. ("Huaqing Energy") (ii)	PRC	held indirectly	RMB 44,420,000	Providing thermal energy and cold energy services; supplying electricity	54%	60%
Huaneng Yunnan Fuyuan Wind Power Generation Co., Ltd.	PRC	held directly	RMB 157,290,000	Wind power project investment, management and sales	100%	100%
Huaneng Guizhou Panxian Wind Power Generation Co., Ltd.	PRC	held directly	RMB 86,500,000	Construction and management of wind power plants and related projects	100%	100%
Huaneng Jiangxi Clean Energy Limited Liability Company	PRC	held directly	RMB 5,000,000	Power generation and supply, development, management and construction of clean energy projects	100%	100%

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng Suzhou Combined Cycle Co-generation Co., Ltd. ("Suzhou Combined Cycle Co-generation") (ix)	PRC	held indirectly	RMB 310,000,000	Construction and management of natural gas power plant and related projects	53.45%	100%
Huaneng Hunan Subaoding Wind Power Generation Co., Ltd.	PRC	held directly	RMB 266,000,000	Construction, operation and management of wind power plants and related projects	100%	100%
Huaneng Suixian Jieshan Wind Power Generation Co., Ltd.	PRC	held directly	RMB 96,500,000	Construction, operation and management of wind power plants and related projects	100%	100%
Huaneng Taiyuan Dongshan Combined Cycle Co-generation Co., Ltd.	PRC	held directly	RMB 600,000,000	Construction and operation of thermal heating network, development and utilization of clean energy resources	100%	100%
Huaneng Xuzhou Tongshan Wind Power Generation Co., Ltd.	PRC	held directly	RMB 2,644,560,000	Wind power generation, electricity engineering design services, maintenance of power supply and control facilities, solar energy power generation	70%	70%
Huaneng Nanjing Co-generation Co., Ltd.	PRC	held directly	RMB 300,000,000	Construction and operation of power plants, thermal heating services	70%	70%
Huaneng Hunan Guidong Wind Power Generation Co., Ltd.	PRC	held directly	RMB 140,000,000	Investment, construction, operation and management of electricity projects; development and utilization of clean energy resources	100%	100%
Huaneng Nanjing Luhe Wind Power Generation Co., Ltd.	PRC	held directly	RMB 63,800,000	Investment, construction, operation, management of electricity projects; development and utilization clean energy resources	100%	100%
Huaneng Luoyuan Power Generation Limited Liability Company	PRC	held directly	RMB 1,000,000,000	Construction, operation and management of power plants and related projects	100%	100%
Huaneng Lingang (Tianjin) Gas Co-generation Co., Ltd.	PRC	held directly	RMB 180,000,000	Providing generation and supply	100%	100%
Huaneng Lingang (Tianjin) Heat Co-generation Co., Ltd.	PRC	held indirectly	RMB 5,000,000	Providing thermal energy and cold energy services, supplying steam and hot water (except portable water), plumbing pipe installation and repair, energy engineering construction	66%	66%
Huaneng Anhui Huaining Wind Power Generation Co., Ltd.	PRC	held directly	RMB 122,000,000	Investment, construction and operation of electricity projects, development and utilization of clean energy resources	100%	100%

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng Mianchi Co-generation Limited Liability Company	PRC	held directly	RMB 570,000,000	Construction, operation and management of coal-fired plants and related projects	60%	60%
Huaneng Yingkou Xianrendao Co-generation Co., Ltd.	PRC	held directly	RMB 277,690,000	Power generation and supply, development and utilization of clean energy resources	100%	100%
Huaneng Nanjing Xingang Comprehensive Energy Co., Ltd.	PRC	held directly	RMB 10,000,000	Thermal generation and supply, power distribution and sales	65%	65%
Huaneng Changxing Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 16,000,000	Construction and operation of distributed photovoltaic power generation plants and related projects	100%	100%
Huaneng Rudong Baxianjiao Offshore Wind Power Generation Co., Ltd.	PRC	held directly	RMB 610,000,000	Infrastructure construction of wind power plants	70%	70%
Huaneng Guilin Gas Distributed Energy Co., Ltd.	PRC	held directly	RMB 267,450,000	Construction, operation and management of power plants thermal management and related projects	80%	80%
Huaneng (Dalian) Co-generation Co., Ltd.	PRC	held directly	RMB 12,500,000	Construction, operation and management of co-generation power plants and related projects	100%	100%
Huaneng Zhongxiang Wind Power Generation Co., Ltd.	PRC	held directly	RMB 10,000,000	Construction, operation and management of wind power plants and related projects	100%	100%
Huaneng Guanyun Co-generation Co., Ltd.	PRC	held directly	RMB 15,000,000	Construction, operation and management of co-generation power plants, heating network and expansion engineering	100%	100%
Huaneng International Power Hongkong Limited Company	HongKong	held directly	100,000 Shares	Development, construction management and operation of power supply, coal projects; related investment and financing businesses	100%	100%
Tuas Power Generation Pte. Ltd. ("TPG")	Singapore	held indirectly	S$ 1,183,000,001	Power generation and related by-products, derivatives, developing power supply resources, operating electricity and power sales	100%	100%
TP Utilities Pte. Ltd.	Singapore	held indirectly	S$ 255,500,001	Provision of energy, power supply, thermal supply, management of industrial water and waste	100%	100%

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

TP-STM Water Resources Pte. Ltd.	Singapore	held indirectly	S$ 4,500,000	Providing desalinated water	60%	60%
Huaneng Shanxi Taihang Power Generation Limited Liability Company	PRC	held directly	RMB 1,086,440,000	Pre-services related to coal-fired generation	60%	60%
Huaneng Mianchi Clean Energy Limited Liability Company	PRC	held directly	RMB 10,000,000	Wind Power generation, new energy development and utilization	100%	100%
Huaneng Zhuolu Clean Energy Limited Liability Company	PRC	held directly	RMB 78,878,100	Construction, operation and management of power plants and related projects	100%	100%
Huaneng Tongwei Wind Power Generation Limited Liability Company	PRC	held directly	RMB 248,000,000	Construction, operation and management of wind power plants and related projects	100%	100%
Huaneng Yizheng Wind Power Generation Limited Liability Company	PRC	held directly	RMB 200,000,000	Wind power plants design, construction, management and maintenance	100%	100%
Huaneng Yancheng Dafeng New Energy Power Generation Limited Liability Company	PRC	held directly	RMB 5,000,000	Construction, operation and management of wind power, photovoltaic power plant	100%	100%
Huaneng Shanyin Power Generation Limited Liability Company	PRC	held directly	RMB 1,573,000,000	Construction, operation and management of power plants and related projects	51%	51%
Huaneng Jiangsu Energy Sales Limited Liability Company	PRC	held directly	RMB 200,000,000	Purchase and sales of electricity and thermal energy, water supply services, construction and operation of electricity distribution network and heating pipe network	100%	100%
Huaneng Liaoning Energy Sales Limited Liability Company	PRC	held directly	RMB 200,000,000	Sales of electricity, thermal energy and circulating hot water	100%	100%
Huaneng Guangdong Energy Sales Limited Liability Company	PRC	held directly	RMB 200,000,000	Power and thermal energy supply, energy conservation technology service, transmission and substation projects contracting	100%	100%
Huaneng Suizhou Power Generation Limited Liability Company	PRC	held directly	RMB 50,000,000	Construction, operation and management of power plants, production and sales of electricity and heating	100%	100%
Huaneng Changle Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 10,000,000	Construction, operation and management of photovoltaic power plants and related projects	100%	100%
Huaneng Longyan Wind Power Generation Limited Liability Company	PRC	held directly	RMB 10,000,000	Construction, operation and management of wind power plants and related projects	100%	100%

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng Yunnan Malong Wind Power Generation Limited Liability Company	PRC	held directly	RMB 10,000,000	Construction, operation and management of wind power plants and related projects	100%	100%
Huaneng Dandong Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 17,720,000	Investment, construction operation and management of electricity projects, development and utilization of clean energy resources	100%	100%
Huaneng Dongguan Combined Cycle Co-generation Limited Liability Company	PRC	held directly	RMB 50,000,000	Investment of electricity projects, thermal power generation and supply, investment in heating pipe network, development and utilization of clean energy resources	100%	100%
Huaneng Yangxi Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 62,500,000	Photovoltaic electric power production and sales	80%	80%
Huaneng Chongqing Fengjie Wind Power Generation Limited Liability Company	PRC	held directly	RMB 10,000,000	Electricity production and supply; development and utilization of clean energy resources	100%	100%
Huaneng Changxing Hongqiao Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 10,000,000	Electricity production and supply; development and utilization of clean energy resources	100%	100%
Huaneng Jingxing Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 100,000	Investment, construction and management of photovoltaic power plants	100%	100%
Huaneng Shanxi Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Electricity supply and sales, investment, construction, operation and repair of regional transmission and distribution network	100%	100%
Huaneng Chongqing Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Operation of natural gas, electric energy and thermal energy products sales	100%	100%
Huaneng Chongqing Luohuang Energy Sales Limited Liability Company	PRC	held indirectly	RMB 210,000,000	Sales and supply of electricity, sales of thermal products	90%	90%
Huaneng Chongqing Tongliang Energy Sales Limited Liability Company	PRC	held indirectly	RMB 210,000,000	Operation of natural gas, sales of electricity supply, sales of thermal products	51%	51%
Huaneng Hunan Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Electricity and thermal energy products sales	100%	100%
Huaneng Jiangxi Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Construction, operation and management of heating and power supply facilities	100%	100%

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng Hebei Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Construction, installation, maintenance and repair of heating and power supply facilities	100%	100%
Huaneng Henan Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Sales of electricity, heating, gas and other energy products	100%	100%
Huaneng Handan Heating Limited Liability Company	PRC	held directly	RMB 100,000,000	Construction, operation and maintenance of heating sources and pipe network	100%	100%
Huaneng (Huzhou Development Zone) Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 10,000,000	Photovoltaic power generation; power supply, purchase and sales	100%	100%
Huaneng Fujian Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Sales of electricity, heating, gas and other energy products	100%	100%
Huaneng Hubei Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Sales of electricity, heating, gas and other energy products	100%	100%
Huaneng (Sanming) Clean Energy Limited Liability Company	PRC	held directly	RMB 500,000	Construction, operation and management of wind power, photovoltaic power station and related projects	100%	100%
Huaneng Yueyang Xingang Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 16,000,000	Construction, operation and management of electricity projects, development and utilization of clean energy	60%	60%
Huaneng Shanghai Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Power supply (except construction and operation of electricity network), technology services in energy conservation and environmental protection	100%	100%
Huaneng Yushe Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 10,000,000	Production and supply of electric power	100%	100%
Huaneng Anhui Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Sales of electricity, heating gas and other energy products	100%	100%
Huaneng (Shanghai) Power Maintenance Limited Liability Company	PRC	held directly	RMB 200,000,000	Contracting installation and repair of electricity facilities	100%	100%
Huaneng Guanyun Clean Energy Power Limited Liability Company *	PRC	held directly	RMB 26,000,000	Sales of electricity	100%	100%

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng Jianchang Photovoltaic Power Generation Limited Liability Company*	PRC	held directly	RMB 10,000,000	Production and supply of electricity, development and utilization of clean energy resources	100%	100%
Huaneng Chaoyang Photovoltaic Power Generation Limited Liability Company*	PRC	held directly	RMB 10,000,000	Production and supply of electricity, development and utilization of clean energy resources	100%	100%
Huaneng (Luoyuan) Port Limited Company (x) *	PRC	held directly	RMB 169,710,000	Port management, investment and development	100%	100%
Huaneng Shijiazhuang Energy Limited Liability Company *	PRC	held directly	RMB 60,000,000	Production and supply of heating, purchase and sales of electricity	66.60%	66.60%
Huaneng Jiangyin Combined Cycle Co-generation Limited Liability Company*	PRC	held directly	RMB 600,000,000	Production and supply of electricity, production and supply of heating	51%	51%
Huaneng Anyang Energy Limited Liability Company *	PRC	held directly	RMB 10,000,000	Production and supply of electricity, production and supply of heating	100%	100%
Huaneng Shanxi Comprehensive Energy Limited Liability Company *	PRC	held directly	RMB 120,000,000	Production and supply of electricity, production and supply of heating	100%	100%
Huaneng Zhanhua Photovoltaic Power Generation Limited Company ("Zhanhua Photovoltaic Company") (vi)*	PRC	held indirectly	RMB 145,790,000	Photovoltaic power generation	46.40%	58%
Huaneng Weishan New Energy Limited Company ("Weishan New Energy") (vi)*	PRC	held indirectly	RMB 167,000,000	Investment, production and sales of new energy power generation projects	40%	100%
Huaneng Ruyi (Helan) New Energy Limited Company ("Helan New Energy") (vi)*	PRC	held indirectly	RMB 19,000,000	Photovoltaic power generation	40%	100%
Huaneng Dezhou New Energy Limited Company (vi)*	PRC	held indirectly	RMB 2,500,000	Photovoltaic power generation, wind power generation, biomass power generation	80%	100%
Zhaodong Huaneng Dechang Solar Power Generation Limited Company*	PRC	held indirectly	RMB 30,810,000	Solar energy generation and technology promotion, repair electricity facilities	100%	100%
Daqing Huaneng Shuangyu Solar Power Generation Limited Company*	PRC	held indirectly	RMB 20,000,000	Solar energy generation	100%	100%
Huaneng Taizhouwan Juji District Photovoltaic Power Generation Limited Liability Company*	PRC	held directly	RMB 100,000	Production and supply of electricity projects	100%	100%

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng Mingguang Wind Power Generation Limited Liability Company*	PRC	held directly	RMB 10,000,000	Production and supply of electricity; investment,construction, operation and management of electricity projects	100%	100%
Huaneng Guangxi Energy Sales Limited Liability Company*	PRC	held directly	RMB 210,000,000	Power supply, contracting installation and repair of electricity facilities	100%	100%
Huaneng Ruzhou Clean Energy Limited Liability Company*	PRC	held directly	RMB 80,000,000	Production and supply of electricity projects, investment, construction and operation of electricity projects	95%	95%
Huaneng Hunan Lianping Wind Power Generation Limited Liability Company*	PRC	held directly	RMB 173,920,000	Production and supply of electricity	80%	80%
Huaneng Abagaqi Clean Energy Limited Liability Company*	PRC	held directly	RMB 100,000	Production, supply and sales of electricity and thermal energy	100%	100%
Huaneng Jiashan Photovoltaic Power Generation Limited Liability Company*	PRC	held directly	RMB 10,000,000	Production and supply of electricity	100%	100%
Huaneng Zhejiang Energy Sales Limited Liability Company*	PRC	held directly	RMB 210,000,000	New energy technology development, technology consulting, transferring of results	100%	100%
Huaneng Guangdong Shantou Power Generation Limited Liability Company*	PRC	held directly	RMB 10,000,000	Production and supply of electricity and thermal energy	100%	100%
Huaneng Shantou Photovoltaic Power Generation Limited Liability Company*	PRC	held directly	RMB 100,000	Production and supply of electricity	100%	100%
Huaneng Guigang Clean Energy Limited Liability Company*	PRC	held directly	RMB 10,000,000	Production and supply of electricity, investment, construction and operation of electricity projects	100%	100%
Huaneng Changxing Jiapu Photovoltaic Power Generation Limited Liability Company*	PRC	held directly	RMB 10,000,000	Production and supply of electricity, investment in electricity projects	100%	100%
Huaneng Hainan Energy Sales Limited Liability Company*	PRC	held indirectly	RMB 210,000,000	Construction and operation of heat and power supply facilities, operation of heat resources, heat network and power supply facilities	91.80%	91.80%
Huaneng Yangpu Co-generation Limited Company*	PRC	held indirectly	RMB 802,222,000	Investment, construction operation and management of electricity projects and heat pipe network	82.62%	82.62%

* These companies were newly established in 2017.

(ii) Subsidiaries acquired from business combinations under common control

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng (Suzhou Industrial Park) Power Generation Co., Ltd	PRC	held directly	RMB 632,840,000	Power generation	75%	75%
Huaneng Qinbei Power Generation Co., Ltd. ("Qinbei Power")	PRC	held directly	RMB 1,540,000,000	Power generation	60%	60%
Huaneng Yushe Power Generation Co., Ltd.	PRC	held directly	RMB 615,760,000	Power generation, power distribution, sales of power	60%	60%
Huaneng Hunan Yueyang Power Generation Limited Liability Company	PRC	held directly	RMB 1,935,000,000	Power generation	55%	55%
Huaneng Chongqing Luohuang Power Generation Limited Liability Company ("Luohuang Power")	PRC	held directly	RMB 1,748,310,000	Power generation	60%	60%
Huaneng Pingliang Power Generation Co., Ltd.	PRC	held directly	RMB 924,050,000	Power generation	65%	65%
Huaneng Nanjing Jinling Power Generation Co., Ltd.	PRC	held directly	RMB 1,513,136,000	Power generation	60%	60%
Huaneng Qidong Wind Power Generation Co., Ltd.	PRC	held directly	RMB 391,738,500	Development of wind power projects, production and sales of electricity	65%	65%
Tianjin Huaneng Yangliuqing Co-generation Limited Liability Company ("Yangliuqing Co-generation")	PRC	held directly	RMB 1,537,130,909	Power generation, heat supply, facilities installation, maintenance and related services	55%	55%
Huaneng Beijing Co-generation Limited Liability Company ("Beijing Co-generation") (iii)	PRC	held directly	RMB 3,702,090,000	Construction and operation of power plants and related construction projects	41%	66%
Huaneng Wuhan Power Generation Co., Ltd. ("Wuhan Power")	PRC	held directly	RMB 1,478,461,500	Investment, construction, operation and management of electricity projects, development and utilization of clean energy resources	75%	75%
Huaneng Anyuan Power Generation Co., Ltd. ("Anyuan Power")	PRC	held directly	RMB 1,175,117,300	Construction and operation of power plants and related construction projects, Production of electricity	100%	100%
Huaneng Hualiangting Hydropower Co., Ltd. ("Hualiangting Hydropower")	PRC	held directly	RMB 50,000,000	Generation and transfer of power supply, water supply (irrigation)	100%	100%
Huaneng Chaohu Power Generation Co., Ltd. ("Chaohu Power") (iv)	PRC	held directly	RMB 840,000,000	Construction, operation, management of electricity projects,development and utilization of clean energy resources	60%	70%
Huaneng Jingmen Thermal Power Co., Ltd. ("Jingmen Thermal Power")	PRC	held directly	RMB 780,000,000	Thermal power, power development and other service	100%	100%

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Enshi Qingjiang Dalongtan Hydropower Development Co., Ltd. ("Dalongtan Hydropower")	PRC	held directly	RMB 76,000,000	Hydropower development, production and management of electric power, urban water supply	97%	97%
Huaneng Suzhou Thermal Power Co., Ltd. ("Suzhou Thermal Power") (v)	PRC	held directly	RMB 600,000,000	Construction, operation and management of electricity projects, development and utilization of clean energy	53.45%	100%
Huaneng Hainan Power Generation Limited Company ("Hainan Power")	PRC	held directly	RMB 1,326,419,587	Investment, construction operation of various power plants, regular energy and new energy development	91.80%	91.80%
Huaneng Ruijin Power Generation Co., Ltd. ("Ruijin Power Generation")	PRC	held directly	RMB 536,923,299	Construction, operation, management of electricity projects, development and utilization of clean energy	100%	100%
Huaneng Yingcheng Thermal Power Co., Ltd. ("Yingcheng Thermal Power")	PRC	held directly	RMB 650,000,000	Construction and operation of power plants and production, sales of power and heat	100%	100%
Huaneng Heilongjiang Power Generation Limited Company ("Heilongjiang Power")	PRC	held directly	RMB 783,350,000	Development, investment, construction, production and management of power (thermal) projects	100%	100%
Huaneng Hegang Power Generation Limited Company ("Hegang Power")	PRC	held indirectly	RMB 1,092,550,000	The electricity power construction, energy conservation and development projects, heat production and supply	64%	64%
Huaneng Xinhua Power Generation Limited Liability Company ("Xinhua Power")	PRC	held indirectly	RMB 284,880,000	Power generation, power equipment repair	70%	70%
Huaneng Tongjiang Wind Power Generation Limited Company ("Tongjiang Wind Power")	PRC	held indirectly	RMB 330,000,000	Wind power generation, wind power plants operation, planning and design	82.85%	82.85%
Huaneng Daqing Thermal Power Limited Company ("Daqing Thermal Power")	PRC	held indirectly	RMB 630,000,000	Power generation, thermal production and supply	100%	100%
Daqing Luyuan Wind Power Generation Limited Company ("Luyuan Wind Power")	PRC	held indirectly	RMB 451,000,000	Wind power generation	100%	100%
Huaneng Yichun Thermal Power Limited Company ("Yichun Thermal Power")	PRC	held indirectly	RMB 534,000,000	Power construction, production and sales, thermal production and sales production of heat and hot water	100%	100%
Huaneng Heilongjiang Energy Sales Limited Company ("Heilongjiang Energy Sales")	PRC	held indirectly	RMB 210,000,000	Power supply,	100%	100%

					Percentage of equity interest held
Name of subsidiary	Country of incorporation	Type of Interest held	Registered capital	Business nature and scope of operations	Interest	Voting
Zhaodong Huaneng Thermal Power Limited Company ("Zhaodong Thermal Power")	PRC	held indirectly	RMB 10,000,000	Heating production and supply	100%	100%
Huaneng Jilin Power Generation Limited Company ("Jilin Power")	PRC	held directly	RMB 1,917,130,000	Power (thermal) projects, development of new energy projects investment, construction, production, operation and sales	100%	100%
Huaneng Linjiang Jubao Hydropower Limited Company ("Jubao Hydropower")	PRC	held indirectly	RMB 20,000,000	Hydropower development and operation, construction and operation of photovoltaic power generation	100%	100%
Huaneng Jilin Energy Sales Limited Company ("Jilin Energy Sales-)	PRC	held indirectly	RMB 210,000,000	Thermal (cold) production and supply, power supply	100%	100%
Huaneng Jilin Biological Power Generation Limited Company ("Jilin Biological Power')	PRC	held indirectly	RMB 183,800,000	Biomass power generation	100%	100%
Huaneng Shandong Power Generation Limited Company ("Shandong Power")	PRC	held directly	RMB 4,241,460,000	Power (thermal) project development, investment. construction and management	80%	80%
Huaneng Jining New Energy Limited Company ("Jining New Energy") (vi)	PRC	held indirectly	RMB 38,000,000	investment, construction and management of photovoltaic and wind power projects	80%	100%
Huaneng Zibo Boshan Photovoltaic Power Limited Company ("Zibo Photovoltaic") (vi)	PRC	held indirectly	RMB 22,000.000	Solar power generation, sales	80%	100%
Huaneng Rizhao Thermal Power Limited Company ("Rizhao Thermal Power") (vi)	PRC	held indirectly	RMB 52,000,000	Urban heat construction, maintenance and operation design and construction of heat engineering	80%	100%
Huaneng Laiwu New Energy Limited Company ("Laiwu New Energy") (vi)	PRC	held indirectly	RMB 68,000,000	Photovoltaic power and wind power generation	80%	100%
Huaneng Shandong Sishui New Energy Limited Company ("Sishui New Energy") (vi)	PRC	held indirectly	RMB 36,000,000	Solar energy grid connected generation	80%	100%
Huaneng Shandong Electric And Thermal Power Marketing Limited Company ("Shandong Power Marketing") (vi)	PRC	held indirectly	RMB 200,000,000	Sales and service of power and heating products, investment in power industry	80%	100%
Huaneng Shandong Information Technology Limited Company ("Shandong Power Information Company") (vi)	PRC	held indirectly	RMB 80,000,000	Information technology and management consulting services	80%	100%
Huaneng Penglai Wind Power Generation Limited Company ("Penglai Wind Power") (vi)	PRC	held indirectly	RMB 177,210,000	Development, investment, construction and management of wind power projects	80%	100%

					Percentage of equity interest held
Name of subsidiary	Country of incorporation	Type of Interest held	Registered capital	Business nature and scope of operations	Interest	Voting

Huaneng Zhanhua New Energy Limited Company ("Zhanhua New Energy") (vi)	PRC	held indirectly	RMB 235,298,200	Wind power, photovoltaic power generation	80%	100%
Huaneng Venial Bajiao Thermal Power Limited Company ("Hajino Thermal Power") (vi)	PRC	held indirectly	RMB 540,000,000	Power generation projects preparation	80%	100%
Huaneng Weihai Port Photovoltaic Power Generation Limited Company ("Port Photovoltaic") (vi)	PRC	held indirectly	RMB 24,960,000	Photovoltaic power generation projects development and construction, electricity sales	80%	100%
Huaneng Zibo Baiyanghe Power Generation Limited Company ("Baiyanghe Power") (vi)	PRC	held indirectly	RMB 1,098,567,344	Power production, ongrid sales, thermal production and supply	80%	100%
Huaneng Yantai Power Generation Limited Company ("Venial Power") (vi)	PRC	held indirectly	RMB 547,479,100	Production and sales of electricity power and heat	80%	100%
Huaneng Jinan Huangtai Power Generation Limited Company ("Huangtai Power") (vi)	PRC	held indirectly	RMB 1,391,878,400	Electricity power production, heating management	72%	90%
Huaneng Dezhou Thermal Power Limited Company ("Dezhou Thermal Power") (vi)	PRC	held indirectly	RMB 20,000,000	Urban heat construction, maintenance and operation design and construction of heat engineering	68%	85%
Huaneng Dongying New Energy Limited Company ("Dongying New Energy") (vi)	PRC	held indirectly	RMB 87,906,822	Wind power projects development, wind power generation and sales of electricity	56%	70%
Huaneng Shandong Power Generation Maintenance Technology Limited Company ("Shandong Maintenance Company") (vi)	PRC	held indirectly	RMB 50,000,000	Power engineering design, construction and construction	76.55%	100%
Huaneng Shandong Electric Power Fuel Limited Company ("Shandong Fuel Company') (vi)	PRC	held indirectly	RMB 100,000,000	Wholesale operation of coal	76.55%	100%
Shandong Rizhao Power Generation Limited Company ("Rizhao Power")(vi)	PRC	held indirectly	RMB 1,245,587,900	Heat, engaged in power business	88.80%	100%
Huaneng Laiwu Power Generation Limited Company ("Laiwu Power") (vi)	PRC	held indirectly	RMB 1,800,000,000	Power production	64%	80%
Huaneng Shandong Ruyi Coal Power Limited Company ("Ruyi Coal Power") (vi)	PRC	held indirectly	RMB 1,294,680,000	Development, investment, construction, operation and management of electricity power and coal	40%	100%
Huaneng Jiaxiang Power Generation Limited Company ("Jiaxiang Power") (vi)	PRC	held indirectly	RMB 646,680,000	Power generation, electrical equipment maintenance	40%	100%

					Percentage of equity interest held
Name of subsidiary	Country of incorporation	Type of Interest held	Registered capital	Business nature and scope of operations	Interest	Voting

Huaneng Qufu Co-generation Limited Company ("Qufu Co-generation") (vi)	PRC	held indirectly	RMB 300,932,990	Sales and production of electric power, thermal power	40%	100%
Huaneng Jining Hi-Tech Zone Co-generation Limited Company ("Jining Co-generation") (vi)	PRC	held indirectly	RMB 118,699,760	Heat supply and power generation	40%	100%
Huaneng Shandong (Hongkong) Investment Limited Company ("Hong Kong Investment") (vi)	Hong Kong	held indirectly	10,000 Shares	Investment	80%	100%
Shandong Silk Road International Power Limited Company ("Shandong Silk Road") (vi)	PRC	held indirectly	RMB 35,000,000	Contracting overseas projects and domestic international bidding projects, construction and operation of power projects	80%	100%
Shandong Changdao Wind Power Generation Limited Liability Company ("Changdao Wind Power") (vi)	PRC	held indirectly	RMB 33,500.000	Wind power, on-grid sales	48%	60%
Huaneng Rongcheng New Energy Co., Ltd. ("Rongcheng New Energy'', (vi)	PRC	held indirectly	RMB 36,540,000	Wind power generation	48%	100%
Huaneng Jining Yunhe Power Generation Co., Ltd. ("Yunhe Power") (vi)	PRC	held indirectly	RMB 696,355,300	Electrical (thermal) production and on-grid sales, technology consulting and services	78.68%	98.35%
Huaneng Linyi Power Generation Limited Company ("Linyi Power") (vi)	PRC	held indirectly	RMB 1,093,313,404	Power generation	60%	75%
Liaocheng Changrun National Electric Heating Limited Company ("Liaocheng Changrun") (vi)	PRC	held indirectly	RMB 130,000,000	Heat operation, installation and repair of water, electricity, heating	60%	75%
Linyi Lantian Thermal Power Limited Company ("Lantian Thermal Power") (vi)	PRC	held indirectly	RMB 36,000,000	Heat supply, maintenance of thermal power network, power sales, installation and maintenance of distribution facilities	54.40%	68%
Yantai 500 Heating Limited Company ("Yantai 500") (vi)	PRC	held indirectly	RMB 20,500,000	Central heat services, plumbing and pipe installation services	64%	80%
Huaneng Liaocheng Co-generation Limited Company ("Liaocheng Co-generation) (vi)	PRC	held indirectly	RMB 610,670,000	Power, heat production and sales	60%	100%
Huaneng Henan Zhongyuan Gas Power Generation Co., Ltd. ("Zhongyuan Gas")	PRC	held directly	RMB 400,000,000	Investment, construction, operation and management of power projects. thermal supply, development and utilization of clean energy resources	90%	90%

The subsidiaries above and the Company are all controlled by Huaneng Group before and after the acquisitions.

(iii) Subsidiaries acquired from business combinations not under common control

					Percentage of equity interest held
Name of subsidiary	Country of incorporation	Type of Interest held	Registered capital	Business nature and scope of operations	Interest	Voting
Huaneng Weihai Power Generation Limited Liability Company ("Weihai Power")	PRC	held directly	RMB 1,822,176,621	Power generation	60%	60%
Huaneng Huaiyin Power Generation Limited Company	PRC	held directly	RMB 265,000,000	Power generation	100%	100%
Huade County Daditaihong Wind Power Utilization Limited Liability Company	PRC	held directly	RMB 196,400,000	Wind power development and utilization	100%	100%
Huaneng Zhanhua Co-generation Limited Company	PRC	held directly	RMB 190,000,000	Production and sales of electricity and thermal energy	100%	100%
Shandong Hualu Sea Transportation Limited Company	PRC	held directly	RMB 100,000,000	Cargo transportation along domestic coastal areas, goods storage	53%	53%
Huaneng Qingdao Port Limited Company	PRC	held directly	RMB 219,845,000	Loading and conveying warehousing, conveying, water carriage materials supply	51%	51%
Huaneng Yunnan Diandong Energy Limited Liability Company ("Diandong Energy")	PRC	held directly	RMB 3,769,140,000	Electricity projects investment power generation and sales, coal exploitation and investment	100%	100%
Yunnan Diandong Yuwang Energy Limited Company ("Diandong Yuwang")	PRC	held directly	RMB 1,700,740,000	Electricity projects investment power generation and sales, coal exploitation and investment	100%	100%
Huaneng Suzihe Hydropower Development Limited Company	PRC	held directly	RMB 50,000,000	Hydropower, aquaculture, agriculture irrigation	100%	100%
Enshi City Mawei Valley Hydropower Development Co, Ltd.	PRC	held directly	RMB 101,080,000	Hydro-resource development hydropower, aquaculture	100%	100%
Huaneng Luoyang Co-generation Limited Liability Company	PRC	held directly	RMB 600,000,000	Production and sales of electricity and heating	80%	80%
Huaneng Jinling Combined Cycle Co-generation Co., Ltd. ("Jinling CCGT") (vii)	PRC	held directly	RMB 356,350,000	Construction and management of power plants and related projects	51%	72%
Huaneng Zhumadian Wind Power Generation Co, Ltd.	PRC	held directly	RMB 30,000,000	Wind power generation, new energy development and utilization	90%	90%
SinoSing Power	Singapore	held directly	US$ 1,476,420,585	Investment holding	100%	100%
Tuas Power	Singapore	held indirectly	S$ 1,433,550,000	Investment holding	100%	100%
Tuas Power Supply Pte Ltd.	Singapore	held indirectly	S$ 500,000	Power sales	100%	100%
TP Asset Management Pte Ltd.	Singapore	held indirectly	S$ 2	Render of environment engineering services	100%	100%
TPGS Green Energy Pte Ltd.	Singapore	held indirectly	S$ 1,000,000	Provision of utility services	75%	75%
NewEarth Pte Ltd.	Singapore	held indirectly	S$ 10,111,841	Consultancy in waste recycling	100%	100%
NewEarth Singapore Pte Ltd.	Singapore	held indirectly	S$ 17,816,050	Industrial waste management and recycling	100%	100%

					Percentage of equity interest held
Name of subsidiary	Country of incorporation	Type of Interest held	Registered capital	Business nature and scope of operations	Interest	Voting

Xuzhou Tongshan District Xiehe Wind Power Generation Limited Liability Company ("Tongshan Xiehe Wind Power Generation")	PRC	held indirectly	RMB 3,000,000	Wind power generation	100%	100%
Luoyang Yangguang Co-generation Limited Liability Company ("Yangguang Co-generation")	PRC	held indirectly	RMB 250,000,000	Production and supply of electricity and heat power	100%	100%
Shanxi Xiaoyi Economic Development Zone Huaneng Energy Service Co, Ltd. ("Shanxi Xiaoyi Energy") (viii) (Note 40)	PRC	held indirectly	RMB 100,000,000	Electricity sales, sales of raw coal and processed coal	51%	100%
Ruzhou Xuji Wind Power Generation Limited Co. Ltd (Note 40)	PRC	held indirectly	RMB 4,000,000	Wind power and photovoltaic power generation	95%	100%

Note:

(i)  According to its article of association, the other shareholder who holds the remaining equity interests of Shidongkou Power entrusts the Company to exercise all its voting rights in relation to the operation and financial policies of Shidongkou Power. Accordingly, the Company has control over Shidongkou Power.

(ii)  The Company holds 90% interest in Liangjiang Power, and Liangjiang Power holds 60% interest in Huaqing Energy. Therefore, the company indirectly holds 54% equity interest in Huaqing Energy.

(iii)  Pursuant to an agreement entered into between the Company and another shareholder, the Company is entrusted to vote the 25% voting rights held by the other shareholder as long as the Company remains as the largest shareholder of Beijing Co-generation. Thus, the Company has majority voting rights required by the article of association to control the operation and financial policies of Beijing Co-generation. Accordingly, the Company has control over Beijing Co-generation.

(iv)  According to the voting in concert agreement entered into between the Company and one shareholder with 10% equity interests in Chaohu Power, the shareholder agreed to vote the same in respect of significant financial and operating decisions made by the Company. As a result, the Company has control over Chaohu Power.

(v)  According to the voting in concert agreement entered into between the Company and the other two shareholders in Suzhou Thermal Power, the shareholders agreed to vote the same in respect of significant financial and operating decisions made by the Company. As a result, the Company has control over Suzhou Thermal Power.

(vi)  These companies are subsidiaries of Shandong Power. The Company holds 80% interest in Shandong Power. Thus, the Company indirectly holds 80% interest in these companies through their parent company.

Zhanhua Photovoltaic Company is a newly established subsidiary of Shandong Power in 2017. Zhanhua New Energy, a wholly-owned subsidiary of Shandong Power, holds 58% equity interests in Zhanhua Photovoltaic Company. Thus, the Company indirectly holds 46.4% equity interests in Zhanhua Photovoltaic Company.

Weishan New Energy and Helan New Energy are wholly-owned subsidiaries of Ruyi Coal Power, a 50% owned subsidiary of Shandong Power. As a result, the Company indirectly holds 40% interest in Weishan New Energy and Helan New Energy.

Shandong Power directly holds 58% interest in Shandong Fuel Company and Shandong Maintenance Company; meanwhile, Shandong Power indirectly holds a total of 37.68% equity interests in Shandong Fuel Company and Shandong Maintenance Company respectively through its own subsidiaries: Baiyanghe Power, Huangtai Power, Yantai Power, Linyi Power, Liaocheng Co-generation and Yunhe Power. Thus, the Company indirectly holds 76.55% interest in Shandong Maintenance Company and Shandong Fuel Company respectively.

The Company directly holds 44% equity interests in Rizhao Power and Shandong Power directly holds 56% interest in Rizhao Power; Thus, the Company holds 88.8% interest in Rizhao Power;

Jiaxiang Power, Qufu Co-generation, Jining Co-generation are wholly-owned subsidiaries of Ruyi Coal Power. Thus, the Company indirectly holds 40% interest in Ruyi Coal Power, Jiaxiang Power, Qufu Co-generation and Jining Co-generation;

In according to the voting in concert agreement entered into among the Shandong Power and other equity holders of Laiwu Power, Ruyi Coal Power, Rongcheng New Energy, Liaocheng Co-generation, the other equity holders agreed to vote the same in respect of significant financial and operating decisions made by the Shandong Power. As a result, the Company has control over these companies.

(vii)  According to the voting in concert agreement entered into between the Company and one shareholder with 21% equity interests in Jinling CCGT, the shareholder agreed to vote the same in respect of significant financial and operating decisions made by the Company under the circumstances that its legitimate entitlements are guaranteed. As a result, the Company has control over Jinling CCGT.

(viii)  In 2016, the Company accounted for the investment in Shanxi Xiaoyi Energy as a joint venture. On 15 February 2017, the Company entered into an agreement with other shareholder with 49% equity interests in Shanxi Xiaoyi Energy who agreed to vote the same in respect of significant financial and operating decisions made by the Company. As a result, the Company has control over Shanxi Xiaoyi Energy since February 2017.

(ix)  Suzhou Combined Cycle Co-generation Limited Company was acquired by Suzhou Thermal Power, another subsidiary of the Company, which was accounted for as an equity transaction, resulting in reclassification of RMB28 million from non-controlling interest to reserve.

(x)  The Company acquired 49% non-controlling interests of Huaneng (Luoyuan) Port Limited Company from the other equity holder, which was accounted for as equity transaction, with the difference of RMB4 million between consideration paid and derecognised non-controlling interest recorded in reserve.

 For the information of material non-controlling interest ("NCI"), please refer to Note 41.

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Available-for-sale financial assets

12 Months Ended

Dec. 31, 2017

Available-for-sale financial assets [abstract]

Available-for-sale financial assets

10 Available-for-sale financial assets

Available-for-sale financial assets include the following:

	As at 31 December
	2017		2016
Listed security (Fair value measurement)
China Yangtze Power Co., Ltd.		-		1,820,255
Others		9,223		458
Subtotal		9,223		1,820,713
Unlisted securities (Cost measurement)
10% of Shanxi Xishan Jinxing Energy Co., Ltd.		531,274		531,274
9.09% of Ganlong Double-track Railway Co., Ltd.		1,000,000		1,000,000
Others		64,496		54,045
Subtotal		1,595,770		1,585,319
Total		1,604,993		3,406,032

There were no impairment provisions provided on available-for-sale financial assets in 2017 and 2016.

In 2017, all of the 143.78 million shares of China Yangtze Power Co., Ltd. held by the Company were disposed with cash consideration of RMB2.191 billion received. After deducting initial investment costs and related taxes, investment income was recognized amounting to approximately RMB1,480 million, with other comprehensive income of RMB1,135 million reclassified to profit or loss.

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Land use rights

12 Months Ended

Dec. 31, 2017

Land use rights [abstract]

Land use rights

11 Land use rights

The movements in the carrying amount of land use rights during the years are as follows:

	2017			2016
Beginning of the year
Cost		10,525,537			10,059,872
Accumulated amortization		(1,792,367	)		(1,530,972	)
Accumulated impairment losses		(276,823	)		(215,134	)
Net book value		8,456,347			8,313,766
Movement:
Business combination (Note 40)		3,182,914			61,027
Addition		331,683			364,280
Amortization charge for the year		(368,898	)		(242,400	)
Impairment charge for the year (Note 7)		(108,590	)		(51,981	)
Disposals		(86,631	)		(1,969	)
Disposal of subsidiaries		(146,922	)		-
Currency translation differences		4,882			13,624
End of the year		11,264,785			8,456,347
Cost		13,775,976			10,525,537
Accumulated amortization		(2,128,752	)		(1,792,367	)
Accumulated impairment losses		(382,439	)		(276,823	)
Net book value		11,264,785			8,456,347

All the lands located in the PRC and Singapore are leased from respective governments according to corresponding regulations applied across the countries. The Company and its subsidiaries will renew the leases according to the operation requirements of the Company and its subsidiaries and the related regulations of respective countries.

Land use rights without ownership certificate

As at 31 December 2017, the Company and its subsidiaries were in the process of applying for the ownership certificate for certain land use right with an aggregate net book value of RMB1,246 million (2016: RMB792 million). The management are of the opinion that the Company and its subsidiaries are entitled to the lawful and valid occupation and use of the above mentioned land.

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Power generation licenses

12 Months Ended

Dec. 31, 2017

Power generation licenses [abstract]

Power generation licenses

12 Power generation licenses

The movements in the carrying amount of power generation license during the years are as follows:

	2017		2016
Beginning of the year		3,849,199		3,679,175
Movement:
Currency translation differences		67,047		170,024
End of the year		3,916,246		3,849,199

The Company and its subsidiaries acquired the power generation license in connection with the acquisition of Tuas Power. The power generation license was initially recognized at fair value at the acquisition date. Tuas Power operates power plants in Singapore pursuant to the license granted by the Energy Market Authority for a period of 30 years from 2003 until 2032. The license was extended to 2044 during 2011 with minimal costs and is subject to further renewal. The Company and its subsidiaries expect that the applicable rules and regulations surrounding the renewal can be complied with based on the current market framework. The Company and its subsidiaries assessed the useful life of the power generation license at 31 December 2017 as indefinite and therefore the license is not amortized.

Impairment test of power generation license

Power generation license belongs to and has been assigned to Tuas Power, a CGU. The recoverable amount of the CGU is determined based on value-in-use calculation. Management prepared the impairment model based on budget approved by the Board and various factors, such as inflation, power demand and other factors as well as the terminal value.

Key assumptions used for value-in-use calculation:

Management has assessed that one of the most sensitive key assumptions is the discount rate which was arrived at based on weighted average cost of capital. The discount rate applied in determining the recoverable amounts of the CGU was 7.30% (31 December 2016: 7.54%). An absolute increase in the discount rate of 0.5% (31 December 2016: 0.5%) would result in approximately RMB2,043 million (31 December 2016: RMB1,899 million) decrease in the recoverable amount of the CGU.

Other key assumptions include projection of its business performance based on estimation of gross margin from electricity sold, volume of electricity sold and other operating expenses, which are largely based on a combination of past performance of the CGU, its expectation of market developments and consistency with forecasts included in industry reports. On average, the growth rates of 3.0% was used in consideration of future expansion plans and new development projects as part of the long-term strategy. Cash flows beyond the terminal year was extrapolated using a growth rate of 2%.

Based on the assessments, no impairment was provided for the power generation license.

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Mining rights

12 Months Ended

Dec. 31, 2017

Mining rights [abstract]

Mining rights

13 Mining rights

The movements in the carrying amount of mining rights during the years are as follow:

	2017			2016
Beginning of the year
Cost		2,406,567			2,406,567
Accumulated impairment losses		(760,296	)		(760,296	)
Net book value		1,646,271			1,646,271
Movement:
Addition		-			-
Impairment charge for the year		-			-
End of the year		1,646,271			1,646,271
Cost		2,406,567			2,406,567
Accumulated impairment losses		(760,296	)		(760,296	)
Net book value		1,646,271			1,646,271

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Derivative financial instruments

12 Months Ended

Dec. 31, 2017

Derivative financial instruments [abstract]

Derivative financial instruments

14 Derivative financial instruments

Details of derivative financial instruments are as follows:

	As at 31 December
	2017		2016
Derivative financial assets
－Hedging instruments for cash flow hedge (fuel swap contracts)		330,966		264,535
－Hedging instruments for cash flow hedge (exchange forward contracts)		-		107,907
－Financial instruments at fair value through profit or loss (fuel swap contracts)		2,726		5,881
Total		333,692		378,323
Less: non-current portion
－Hedging instruments for cash flow hedge (fuel swap contracts)		75,328		71,341
－Hedging instruments for cash flow hedge (exchange forward contracts)		-		28,380
Total non-current portion		75,328		99,721
Current portion		258,364		278,602
Derivative financial liabilities
－Hedging instruments for cash flow hedge (fuel swap contracts)		11,794		164,464
－Hedging instruments for cash flow hedge (exchange forward contracts)		68,102		454
－Hedging instruments for cash flow hedge (interest rate swap contracts)		130,643		169,201
－Financial instruments at fair value through profit or loss (fuel swap contracts)		125		619
Total		210,664		334,738
Less: non-current portion
－Hedging instruments for cash flow hedge (fuel swap contracts)		2,026		31,673
－Hedging instruments for cash flow hedge (exchange forward contracts)		21,745		295
－Hedging instruments for cash flow hedge (interest rate swap contracts)		124,715		169,201
Total non-current portion		148,486		201,169
Current portion		62,178		133,569

For the years ended 31 December 2016 and 2017, no material ineffective portion was recognized in the profit or loss arising from cash flow hedges.

The Company uses an interest rate swap contract to hedge its interest rate risk against one of its variable rate loans. The notional principal amount of the outstanding interest rate swap contract at 31 December 2017 was US$176million (RMB equivalents of RMB1,150 million) (2016: US$208 million (RMB equivalents of RMB1,443 million)). Through this arrangement, the Company pays an annual fixed interest of 4.40% while the original annual floating interest expense (6-month LIBOR+1%) attached in the loan is offset by the receivable leg of the interest rate swap. Such a swap is settled on a quarterly basis from September 2009 to September 2019.

TPG uses exchange forward contracts to hedge its foreign exchange risk arising from highly probable forecast purchase transactions. It also uses fuel oil swap contracts to hedge its fuel price risk arising from highly probable forecast purchases of fuel purchases.

TPG also uses various interest rate swap contracts to hedge floating semi-annual interest payments on borrowings with maturity dates up to 2020. The notional principal amount of these outstanding interest rate swap contracts at 31 December 2017 was S$1,069million (RMB equivalents of RMB5,220 million) (2016: S$1,359million (RMB equivalents of RMB6,522 million)). Through these arrangements, TPG swaps original floating interest (6-month SOR) to annual fixed interest determined by individual swap contracts. Such swap contracts are settled semi-annually from September 2011 to March 2020. As at 31 December 2017, these interest rate swap contracts are carried on the consolidated statements of financial position as financial liability of RMB108 million (2016: financial liability of RMB99 million).

The analysis of contractual cash inflows/(outflows) of major derivative financial instruments are as follows:

			Cash flows
	Carrying amounts		Contractual cash flows			Within 1 year			Between 1 and 5 years			After 5 years
As at 31 December 2017 Derivative financial assets Fuel derivatives used for hedging (net settlement)		330,966		330,966			255,638			75,328			-
Fuel derivatives that do not qualify as hedges (net settlement)		2,726		2,726			2,726						-
Derivative financial liabilities
Fuel derivatives used for hedging  (net settlement)		11,794		(11,794	)		(9,768	)		(2,026	)		-
Forward exchange contracts used for hedging
- inflows				2,509,363			2,041,812			467,551			-
- outflows				(2,568,034	)		(2,083,441	)		(484,593	)		-
		68,102		(58,671	)		(41,629	)		(17,042	)		-
Net-settled interest rate swaps used for hedging  - net cash inflows/(outflows)		130,643		(154,367	)		(82,533	)		(71,834	)		-
Fuel derivatives that do not qualify as hedges (net settlement)		125		(125	)		(125	)		-
As at 31 December 2016 derivative financial assets Fuel derivatives used for hedging (net settlement)		264,535		264,535			193,194			71,341			-
Forward exchange contracts used for hedging
- inflows				2,118,946			1,488,071			630,875			--
-  outflows				(2,009,205	)		(1,407,606	)		(601,599	)		-
		107,907		109,741			80,465			29,276			-
Fuel derivatives that do not qualify as hedges (net settlement)		5,881		5,881			5,881			-			-
Derivative financial liabilities
Fuel derivatives used for hedging (net settlement)		164,464		(164,464	)		(132,792	)		(31,672	)		-
Forward exchange contracts used for hedging
- inflows				527,939			475,881			52,058			-
- outflows				(528,454	)		(476,104	)		(52,350	)		-
		454		(515	)		(223	)		(292	)		-
Net―settled interest rate swaps used for hedging - net cash inflows/(outflows)		169,201		(228,905	)		(113,563	)		(115,342	)		-
Fuel derivatives that do not qualify as hedges (net settlement)		619		(619	)		(619	)		-			-

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Goodwill

12 Months Ended

Dec. 31, 2017

Goodwill [abstract]

Goodwill

15 Goodwill

The movements of goodwill during the years are as follows:

	2017			2016
Beginning of the year
Cost		15,391,642			14,919,930
Accumulated impairment losses		(3,255,913	)		(3,242,748	)
Net book value		12,135,729			11,677,182
Movement:
Business combination (Note 40)		3,167,566			-
Disposal of subsidiary-cost		(309,269	)		-
Disposal of subsidiary-impairment		309,269			-
Currency translation differences-cost		186,015			471,712
Currency translation differences-impairment		(5,190	)		(13,165	)
End of the year		15,484,120			12,135,729
Cost		18,435,954			15,391,642
Accumulated impairment losses		(2,951,834	)		(3,255,913	)
Net book value		15,484,120			12,135,729

Impairment tests for goodwill

Goodwill is allocated to the CGUs of the Company and its subsidiaries.

The carrying amounts of major goodwill allocated to individual CGUs are as follows:

	2017		2016
PRC Power segment:
Shandong Power		2,739,818		-
Wuhan Power		518,484		518,484
Hainan Power		506,336		506,336
Heilongjiang Power		265,319		-
Yangliuqing Cogeneration		151,459		151,459
Qinbei Power		109,913		109,913
Jilin Power		109,826		-
Yueyang Power Company		100,907		100,907
Beijing Cogeneration		95,088		95,088
Singapore segment:
Tuas Power		10,561,956		10,381,131

The recoverable amount of a CGU is determined based on value-in-use calculations. For domestic CGUs, these calculations use cash flow projections based on management's financial budgets covering periods of no more than five years. The Company expects cash flows beyond such periods will be similar to that of the respective final forecast years on existing production capacity.

For the goodwill allocated to Tuas Power, management has based their assessment of recoverable amount on value-in-use calculations. Management prepared the impairment model based on budget approved and various factors, such as inflation, power demand and other factors as well as the terminal value. On average, the growth rates of 3.0% was used in consideration of future expansion plans and new development projects as part of the long-term strategy. Cash flows beyond the terminal year was extrapolated using a growth rate of 2.0%.

Discount rates used for value-in-use calculations:

PRC Power segment	8.51%-13.59	%
Singapore segment	7.30	%

Key assumptions used for value-in-use calculations:

Key assumptions applied in the impairment tests include the expected tariff rates, demands of electricity in specific regions where these power plants are located and fuel cost. Management determined these key assumptions based on past performance and its expectations on market development. The discount rates used reflect specific risks relating to individual CGUs. Management believes that any reasonably possible change in any of these key assumptions on which recoverable amounts of individual CGUs are based may cause carrying amounts of individual CGUs to exceed their recoverable amounts. Please refer to Note 4 and 12 for details of respective sensitivity analysis on domestic and oversea CGU impairment testing.

In 2017 and 2016, the increase of goodwill in respect of Tuas Power was due to currency translation differences.

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Other non-current assets

12 Months Ended

Dec. 31, 2017

Other non-current assets [abstract]

Other non-current assets

16 Other non-current assets

Details of other non-current assets are as follows:

	As at 31 December
	2017		2016
VAT recoverable		2,741,604		1,651,891
Prepayments for pre-construction cost		937,161		-
Intangible assets *		697,884		411,308
Finance lease receivables		617,187		563,099
Prepaid territorial water use right **		374,743		777,994
Prepayments for capacity quota		303,399		-
Profit compensation from Huaneng Group (Note 40)		244,533		-
Prepaid connection fees		120,486		108,365
Others		1,659,848		809,288
Total		7,696,845		4,321,945

* The intangible assets primarily consist of software, patented technologies and etc. In 2017, there is no impairment provided for the intangible assets (2016: RMB nil).

** The prepaid territorial water use right are amortized over the contractual period of 50 years.

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Inventories

12 Months Ended

Dec. 31, 2017

Inventories [abstract]

Inventories

17 Inventories

Inventories comprised:

	As at 31 December
	2017		2016
Fuel (coal and oil) for power generation		5,684,824		5,391,068
Material and supplies		1,869,462		1,655,357
		7,554,286		7,046,425
Less: provision for inventory obsolescence		168,875		167,282
Total		7,385,411		6,879,143

Movements of provision for inventory obsolescence during the years are analyzed as follows:

	2017			2016			2015
Beginning of the year		(167,282	)		(162,389	)		(163,458	)
Provision		(1,520	)		(1,134	)		(2,867	)
Reversal		1,782			1,390			1,039
Disposal of subsidiaries		162			-			-
Currency translation differences		(2,017	)		(5,149	)		2,897
End of the year		(168,875	)		(167,282	)		(162,389	)

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Other receivables and assets

12 Months Ended

Dec. 31, 2017

Other receivables and assets [abstract]

Other receivables and assets

18 Other receivables and assets

Other receivables and assets comprised the following:

	As at 31 December
	2017		2016
Prepayments for inventories		387,335		252,389
Prepaid income tax		150,838		141,423
Prepayments for pre-construction cost		-		885,051
Prepayments for capacity quota		-		303,399
Others		181,913		121,810
Total prepayments		720,086		1,704,072
Less: provision for doubtful accounts		4,638		-
Total prepayments, net		715,448		1,704,072
Dividends receivable		273,897		861,408
Receivables from sales of fuel		290,040		-
Others		1,528,855		908,296
Subtotal other receivables		2,092,792		1,769,704
Less: provision for doubtful accounts		29,241		28,961
Total other receivables, net		2,063,551		1,740,743
Profit compensation from Huaneng Group (Note 40)		615,013		-
VAT recoverable		2,607,505		2,008,955
Designated loan to a joint venture		80,000		80,000
Gross total		6,115,396		5,562,731
Net total		6,081,517		5,533,770

Please refer to Note 36 for details of other receivables and assets due from the related parties.

The gross amounts of other receivables are denominated in the following currencies:

	As at 31 December
	2017		2016
RMB		1,966,971		1,635,051
S$ (RMB equivalent)		76,529		95,816
US$ (RMB equivalent)		49,292		38,837
Total		2,092,792		1,769,704

Movements of provision for doubtful accounts during the years are analyzed as follows:

	2017			2016			2015
Beginning of the year		(28,961	)		(27,957	)		(29,644	)
Provision		(5,890	)		(1,011	)		(9	)
Reversal/write-off		972			7			1,696
End of the year		(33,879	)		(28,961	)		(27,957	)

As at 31 December 2017, there was no indication of impairment relating to other receivables which were not past due and no material provision was made (2016: nil).

As at 31 December 2017, other receivables of RMB140 million (2016: RMB113 million) were past due but not impaired. These amounts mainly represent funds deposited in a government agency and are fully recoverable. The ageing analysis of these other receivables was as follows:

	As at 31 December
	2017		2016
Within 1 year		61,189		42,103
Between 1 to 2 years		1,360		2,683
Between 2 to 3 years		1,130		847
Over 3 years		76,376		67,476
Total		140,055		113,109

As at 31 December 2017, other receivables of RMB41 million which were past due (2016: RMB36 million) were impaired and a provision of RMB29 million (2016: RMB29 million) has been provided against the receivables. The individually impaired receivables have been long outstanding without any repayment agreements in place or possibility of renegotiation. It was assessed that a substantial portion of the receivables is not expected to be recovered. The ageing of these other receivables was as follows:

	As at 31 December
	2017		2016
Within 1 year		7,535		752
Between 1 to 2 years		10		912
Between 2 to 3 years		463		285
Over 3 years		33,402		34,263
Total		41,410		36,212

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Accounts receivable

12 Months Ended

Dec. 31, 2017

Accounts receivable [abstract]

Accounts receivable

19 Accounts receivable

Accounts receivable comprised the following:

	As at 31 December
	2017		2016
Accounts receivable		21,948,753		14,050,096
Notes receivable		3,610,928		2,432,264
		25,559,681		16,482,360
Less: provision for doubtful accounts		112,086		88,889
Total		25,447,595		16,393,471

The gross amounts of account receivables are denominated in the following currencies:

	As at 31 December
	2017		2016
RMB		24,633,465		15,586,989
S$ (RMB equivalent)		922,993		876,956
US$ (RMB equivalent)		3,223		18,415
Total		25,559,681		16,482,360

The Company and its subsidiaries usually grant about one month's credit period to local power grid customers from the end of the month in which the sales are made, except for SinoSing Power which provides credit period that ranges from 5 to 60 days from the dates of billings. Certain accounts receivables of Singapore subsidiaries are backed by bankers' guarantees and/or deposits from customers. It is not practicable to determine the fair value of the collaterals that correspond to these accounts receivable.

As at 31 December 2017, no accounts receivable was secured to banks as collateral against loans (2016: nil).

For the collateral of notes receivable, please refer to Note 27 for details.

Movements of provision for doubtful accounts during the years are analyzed as follows:

	2017			2016			2015
Beginning of the year		(88,889	)		(2,054	)		(11,809	)
Provision		(23,363	)		(88,818	)		(60	)
Reversal		-			397			1,833
Write-off		167			1,682			-
Transfer from a subsidiary to a joint venture		-			-			8,126
Currency translation differences		(1	)		(96	)		(144	)
End of the year		(112,086	)		(88,889	)		(2,054	)

As at 31 December 2017, the Company and its subsidiaries recognised provisions for accounts receivable assessed on an individual basis, which mainly consists of receivables due from local customers for sales of electricity or heat. The provisions were provided based on operating results of the local customers and collectability of the receivables.

(a) Ageing analysis of accounts receivable was as follows:

	As at 31 December
	2017		2016
Within 1 year		24,787,284		16,152,038
Between 1 to 2 years		576,564		279,694
Between 2 to 3 years		155,360		29,123
Over 3 years		40,473		21,505
Total		25,559,681		16,482,360

As at 31 December 2017, the maturity period of the notes receivable ranged from 1 to 12 months (2016: from 1 to 12 months).

(b) Ageing analysis of accounts receivable and notes receivable that are neither individually nor collectively considered to be impaired are as follows:

	As at 31 December
	2017		2016
Neither past due nor impaired		24,936,171		16,063,215
Less than 1 year past due		267,845		248,597
Between 1 to 2 years past due		206,188		63,094
Between 2 to 3 years past due		27,130		17,944
Over 3 years past due		10,261		621
Total		25,447,595		16,393,471

Receivables that were past due but not impaired relate to a number of independent customers that have a good track record with the Company and its subsidiaries. Based on past experience, management believes that no impairment allowance is necessary in respect of these balances as there has not been a significant change in credit quality and the balances are still considered fully recoverable.

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Share capital

12 Months Ended

Dec. 31, 2017

Share capital [abstract]

Share capital

20 Share capital

	2017				2016
	Number of shares		Share capital		Number of shares		Share capital
			RMB '000				RMB '000
As at 1 January and 31 December
A shares		10,500,000,000		10,500,000		10,500,000,000		10,500,000
Overseas listed foreign shares		4,700,383,440		4,700,383		4,700,383,440		4,700,383
Total		15,200,383,440		15,200,383		15,200,383,440		15,200,383

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Perpetual corporate bonds

12 Months Ended

Dec. 31, 2017

Perpetual corporate bonds [abstract]

Perpetual Corporate Bonds

21 Perpetual Corporate Bonds

(a) Perpetual corporate bonds as at 31 December 2017

format only

Type of Bonds	Issuance Date	Category	Initial Annual Distribution Rates	Issue Price	Number	Par Value	Initial Period	Conversion Condition	Conversion Result
				RMB '000		RMB '000
Bond A	September 2017	Equity Instrument	5.05%	0.1	25,000,000	2,500,000	3 Years	None	None
Bond B	September 2017	Equity Instrument	5.17%	0.1	25,000,000	2,500,000	5 years	None	None
Total						5,000,000

(b) Major Provisions

In 2017, the Company issued perpetual corporate bonds with the aggregate net proceeds of approximate RMB5,000 million. The perpetual corporate bonds are issued at par value with initial annual distribution rate of 5.05% and 5.17%. The interests of the perpetual corporate bonds are recorded as distributions, which are paid annually in arrears in September in each year and may be deferred at the discretion of the Company unless compulsory distribution payment events (distributions to ordinary shareholders of the Company or reduction of the registered capital of the Company) occurred.

The perpetual corporate bonds have no fixed maturity date and are callable at the Company's discretion in whole in August 2020 and 2022 respectively, the payment of the principal may be deferred for each renewal period as 3 and 5 years. The applicable distribution rate will be reset on first call date and each renewal period after first call date, to the sum of the applicable benchmark interest rate, the initial spread and 300 basis points per annum.

The perpetual corporate bonds were recorded as equity in the consolidated financial statements. During the year ended 31 December 2017, the profit attributable to holders of perpetual corporate bonds, based on the applicable distribution rate, was RMB69 million.

(c) Changes of perpetual corporate bonds during 2017

The perpetual corporate bonds were recorded as equity in the consolidated financial statements. During the year ended 31 December 2017, the profit attributable to holders of perpetual corporate bonds, based on the applicable distribution rate, was RMB69 million.

	As at 1 January 2017				Issurance				Cumulative Interests		As at 31 December 2017
Type of Bonds	Number		Amount		Number		Amount				Number		Amount
			RMB '000				RMB '000		RMB '000				RMB '000
Bond A		-		-		25,000,000		2,499,975		33,897		25,000,000		2,533,872
Bond B		-		-		25,000,000		2,499,975		34,703		25,000,000		2,534,678
Total		-		-		50,000,000		4,999,950		68,600		50,000,000		5,068,550

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Surplus reserves

12 Months Ended

Dec. 31, 2017

Surplus reserves [abstract]

Surplus reserves

22 Surplus reserves

	As at 1 January 2017 and 31 December 2017
Surplus reserves		8,140,030

According to the Company Law of the PRC, the Company's articles of association and board resolutions, the Company appropriates 10% of each year's net profit under PRC GAAP to the statutory surplus reserve. The Company has the option to cease provision for such reserve when it reaches 50% of the registered share capital. Upon the approval from relevant authorities, this reserve can be used to make up any losses incurred or to increase share capital. Except for offsetting against losses, this reserve cannot fall below 25% of the registered share after being used to increase share capital.

As the statutory surplus reserve reaches 50% of the registered share capital in 2017, the Company made no provision this year.

Appropriation of discretionary surplus reserve is proposed by the Board of Directors, and approved by the general meeting of shareholders. This reserve can be used to make up any losses incurred in prior years or to increase the share capital after obtaining relevant approvals. For the years ended 31 December 2017 and 2016, no provision was made to the discretionary surplus reserve.

According to the articles of association, in distributing the Company's profits after tax for the relevant accounting year, the lower of amounts determined in accordance with PRC GAAP and IFRS shall be adopted. As at 31 December 2017, in accordance with PRC GAAP and IFRS, the balance of retained earnings for the Company and its subsidiaries amounted to approximately RMB31.965 billion and RMB35.793 billion, respectively.

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Dividends

12 Months Ended

Dec. 31, 2017

Dividends [abstract]

Dividends

23 Dividends

On 13 March 2018 the Board of Directors proposed a cash dividend of RMB0.1 per share, totaling approximately RMB1,520 million. This proposal is subject to the approval of the shareholders at the annual general meeting.

On 13 June 2017, upon the approval from the annual general meeting of the shareholders, the Company declared 2016 final dividend RMB0.29 (2015: RMB0.47) per ordinary share, totaling approximately RMB4,408 million (2015: RMB7,144 million).

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Long-term loans

12 Months Ended

Dec. 31, 2017

Long-term loans [abstract]

Long-term loans

24 Long-term loans

Long-term loans comprised the following:

	As at 31 December
	2017		2016
Loans from Huaneng Group
and its subsidiaries (a)		7,427,183		3,818,807
Bank loans and other loans (b)		117,702,233		70,732,439
		125,129,416		74,551,246
Less: Current portion of long-term loans		18,098,458		9,560,885
Total		107,030,958		64,990,361

(a) Loans from Huaneng Group and its subsidiaries

Details of loans from Huaneng Group and its subsidiaries are as follows:

	As at 31 December 2017
	Original currency		RMB equivalent		Less: Current portion		Non current portion		Annual interest rate
		000
Loans from Huaneng Group
Unsecured
RMB
- Variable rate		665,225		665,225		-		665,225		4.75	%
Loans from Huaneng Finance
Unsecured
RMB
- Variable rate		2,794,780		2,794,780		244,500		2,550,280		4.28%-4.66	%
Loans from Huaneng Tiancheng Financial Leasing Co., Ltd. ("Tiancheng Financial Leasing")
Secured
RMB
- Variable rate		3,967,178		3,967,178		1,878,994		2,088,184		4.06%-4.51	%
Total				7,427,183		2,123,494		5,303,689

	As at 31 December 2016
	Original currency		RMB equivalent		Less: Current portion		Non current portion		Annual interest rate
		000
Loans from Huaneng Group
Unsecured
RMB
- Variable rate		665,015		665,015		640,485		24,530		4.75	%
Loans from HIPDC
Unsecured
RMB
- Variable rate		210		210		-		210		4.75	%
Loans from Huaneng Finance
Unsecured
RMB
- Variable rate		286,000		286,000		60,000		226,000		4.41%-4.75	%
Loans from Huaneng Tiancheng Financial Leasing
Secured
RMB
- Variable rate		2,867,582		2,867,582		154,737		2,712,845		4.42	%
Total				3,818,807		855,222		2,963,585

(b) Bank loans and other loans

Details of bank loans and other loans are as follows:

	As at 31 December 2017
	Original currency	RMB equivalent	Less: Current portion	Non current portion	Annual interest rate
	000
Secured
RMB
- Fixed rate	7,080,379	7,080,379	1,213,150	5,867,229	4.41%-4.90%
- Variable rate	4,117,055	4,117,055	657,231	3,459,824	4.66%-4.90%
Unsecured
RMB
- Fixed rate	14,981,859	14,981,859	3,179,426	11,802,433	2.00%-5.00%
- Variable rate	76,467,082	76,467,082	10,013,829	66,453,253	1.80%-6.03%
US$
- Variable rate	347,676	2,271,785	418,163	1,853,622	1.74%/2.26%
S$
- Variable rate	2,538,619	12,396,329	419,570	11,976,759	2.73%/4.25%
€
- Fixed rate	30,463	237,680	67,207	170,473	1.30%-2.15%
JPY
- Fixed rate	2,592,661	150,064	6,388	143,676	0.75%
Total		117,702,233	15,974,964	101,727,269

	As at 31 December 2016
	Original currency	RMB equivalent	Less: Current portion	Non current portion	Annual interest rate
	000
Secured
RMB
- Fixed rate	8,305,310	8,305,310	1,202,430	7,102,880	4.41%-4.90%
- Variable rate	760,500	760,500	56,800	703,700	4.66%-4.90%
Unsecured
RMB
- Fixed rate	15,896,017	15,896,017	2,515,343	13,380,674	2.65%-5.00%
- Variable rate	30,095,494	30,095,494	4,270,910	25,824,584	4.17%-5.65%
US$
- Variable rate	409,760	2,842,505	388,925	2,453,580	1.92%
S$
- Variable rate	2,580,522	12,385,213	196,410	12,188,803	2.76%/4.25%
€
- Fixed rate	39,187	286,329	68,271	218,058	2.00%/2.15%
JPY
- Fixed rate	2,702,533	161,071	6,574	154,497	0.75%
Total		70,732,439	8,705,663	62,026,776

As at 31 December 2017, long-term loans of RMB4,605 million (31 December 2016: RMB2,902 million) were secured by certain property, plant and equipment with net book value amounting to approximately RMB5,167 million (31 December 2016: RMB3,105 million).

Thereinto, certain subsidiaries of the Company had the sales and leaseback agreements with Tiancheng Financial Leasing and other financial leasing companies in previous years. According to the agreements, these subsidiaries have an option to buy back the equipment at a nominal price (RMB1) when the lease term expires. The substance of the transaction was to obtain financing secured by relevant assets within the leasing period. As at 31 December 2017, the equipment mentioned above has a total carrying amount of RMB4,064 million and RMB1,103 million (31 December 2016: RMB2,999 million and RMB0 million) while the long-term borrowings is RMB3,967 million and RMB638 million (31 December 2016: RMB2,868 million and RMB0 million) from Tiancheng Financial Leasing and other financial leasing companies, respectively.

As at 31 December 2017, long-term loans of approximately RMB10,559 million were secured by future electricity and heat revenue (31 December 2016: RMB9,032 million).

The maturity of long-term loans is as follows:

	Loans from Huaneng Group and its subsidiaries				Bank loans and other loans
	As at 31 December				As at 31 December
	2017		2016		2017		2016
			RMB '000				RMB '000
1 year or less		2,123,494		855,222		15,974,964		8,705,663
More than 1 year but no more than 2 years		1,689,582		715,400		19,039,483		11,420,746
More than 2 years but no more than 3 years		1,281,082		953,082		18,624,576		11,081,242
More than 3 years but no more than 4 years		294,020		928,082		16,388,976		7,769,955
More than 4 years but no more than 5 years		728,225		232,021		11,927,930		7,618,953
More than 5 years		1,310,780		135,000		35,746,304		24,135,880
		7,427,183		3,818,807		117,702,233		70,732,439
Less: amount due within 1 year included under current liabilities		2,123,494		855,222		15,974,964		8,705,663
Total		5,303,689		2,963,585		101,727,269		62,026,776

The interest payment schedule of long-term loans in the future years are summarized as follows:

	As at 31 December
	2017		2016
1 year or less		5,071,743		2,987,045
More than 1 year but not more than 2 years		4,225,736		2,577,363
More than 2 years but not more than 5 years		7,903,397		4,912,222
More than 5 years		4,864,084		3,133,578
Total		22,064,960		13,610,208

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Long-term bonds

12 Months Ended

Dec. 31, 2017

Long-term bonds [abstract]

Long-term bonds

25 Long-term bonds

The Company issued bonds with maturity of 5 years, 7 years and 10 years in December 2007 with face values of RMB1 billion, RMB1.7 billion and RMB3.3 billion bearing annual interest rates of 5.67%, 5.75% and 5.90%, respectively. The total actual proceeds received by the Company were approximately RMB5.885 billion. These bonds are denominated in RMB and issued at par. Interest is payable annually while principal will be paid when the bonds fall due. The annual effective interest rates of those bonds are 6.13%, 6.10% and 6.17%, respectively. Interest paid per annum during the tenure of the bonds is RMB57 million, RMB98 million and RMB195 million, respectively. The bond with original maturity of 5 years had matured in December 2012 and the Company repaid the principal of RMB1 billion. The bond with original maturity of 7 years had matured in December 2014 and the Company repaid the principal of RMB1.7 billion. The bond with original maturity of 10 years had matured in December 2017 and the Company repaid the principal of RMB3.3 billion.

The Company also issued bonds with maturity of 10 years in May 2008 with a face value of RMB4 billion bearing an annual interest rate of 5.20%. The actual proceeds received by the Company were approximately RMB3.933 billion. These bonds are denominated in RMB and issued at par. Interest is payable annually while principal will be paid when the bonds fall due. The annual effective interest rate of bond is 5.42%. Interest paid per annum during the tenure of the bonds is RMB208 million. As at 31 December 2017, interest payable for these bonds amounted to approximately RMB135.06 million (31 December 2016: RMB135.06 million).

The Company issued medium-term notes with maturity of 5 years in July 2014 with a face value of RMB4 billion bearing an annual interest rate of 5.30%. The actual proceeds received by the Company were approximately RMB3.988 billion. These notes are denominated in RMB and issued at par. Interest is payable annually while principal will be paid when the notes fall due. The annual effective interest rate of these notes is 5.37%. Interest paid per annum during the tenure of the notes is RMB212 million. As at 31 December 2017, interest payable for the bonds amounted to approximately RMB99.32 million (31 December 2016: RMB99.32 million).

The Company issued corporate bonds with maturity of 5 years and 10 years in June 2016 with face values of RMB3 billion and RMB1.2 billion bearing annual interest rates of 3.48% and 3.98%, respectively. The total actual proceeds received by the Company were approximately RMB4.2 billion. These bonds are denominated in RMB and issued at par. Interest is payable annually while principal will be paid when the bonds fall due. The annual effective interest rates of those bonds are 3.48% and 3.98%, respectively. Interest paid per annum during the tenure of the bonds is RMB104.40 million and RMB47.76 million, respectively. As at 31 December 2017, interest payable for the bonds amounted to approximately RMB57.78 million (31 December 2016: RMB57.78 million) and RMB26.43 million (31 December 2016: RMB26.43 million), respectively.

The Company issued medium-term notes with maturity of 5 years in July 2017 with a face value of RMB5 billion bearing an annual interest rate of 4.69%. The actual proceeds received by the Company were approximately RMB5 billion. These notes are denominated in RMB and issued at par. Interest is payable annually while principal will be paid when the notes fall due. The annual effective interest rate of those notes is 4.69%. Interest paid per annum during the tenure of the notes is RMB234.50 million. As at 31 December 2017, interest payable for the notes amounted to approximately RMB111.15 million.

The Company issued debt financing instrument with maturity of 3 years in July 2017 with a face value of RMB500 million bearing an annual interest rate of 4.75%. The actual proceeds received by the Company were approximately RMB499 million. These bonds are denominated in RMB and issued at par. Interest is payable annually while principal will be paid when the bonds fall due. The annual effective interest rate of those bonds is 4.82%. Interest paid per annum during the tenure of the bonds is RMB23.75 million. As at 31 December 2017, interest payable for the bonds amounted to approximately RMB11.02 million.

The Company issued corporate bonds with maturity of 3 years in November 2017 with a face values of RMB2.3 billion bearing an annual interest rates of 4.99%. The actual proceeds received by the Company were approximately RMB2.299 billion. These bonds are denominated in RMB and issued at par. Interest is payable annually while principal will be paid when the bonds fall due. The annual effective interest rate of those bonds is 4.99%. Interest paid per annum during the tenure of the bonds is RMB114.77 million, respectively. As at 31 December 2017, interest payable for the bonds amounted to approximately RMB17.61 million.

Please refer to Note 36(c) for details of long-term bonds of the Company guaranteed by HIPDC and government-related banks.

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Other non-current liabilities

12 Months Ended

Dec. 31, 2017

Other non-current liabilities [abstract]

Other non-current liabilities

26 Other non-current liabilities

	As at 31 December
	2017			2016
Finance lease payables(a)		1,600,106			1,088,846
Government grants
-Environmental subsidies(b)		1,245,810			1,122,406
-Other government grants		179,226			174,216
Other deferred income		1,825,614			379,615
Others		969,052			870,597
Subtotal		5,819,808			3,635,680
Current portion of finance lease payables		(470,985	)		(568,645	)
Current portion of other non-current liabilities		(64,361	)		(247,537	)
Subtotal		(535,346	)		(816,182	)
Total		5,284,462			2,819,498

(a) The Company and its subsidiaries had obligation under finance leases as follows:

	As at 31 December
	2017		2016
Within 1 year		500,790		605,806
After 1 year but within 2 years		312,125		266,792
After 2 years but within 3 years		281,990		82,470
After 3 years		674,256		181,345
		1,769,161		1,136,413
Less: total future interest expense		169,055		47,567
Total		1,600,106		1,088,846

(b) This primarily represented subsidies for the construction of desulphurization equipment and other environmental protection projects.

(c) In 2017, the asset-related government grants which were credited to the statement of comprehensive income amounted to RMB140.13 million (2016: RMB102.21 million).

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Accounts payable and other liabilities

12 Months Ended

Dec. 31, 2017

Accounts payable and other liabilities [abstract]

Accounts payable and other liabilities

27 Accounts payable and other liabilities

Accounts payable and other liabilities comprised:

	As at 31 December
	2017		2016
Accounts and notes payable		15,496,475		12,059,004
Payables to contractors for construction		14,491,632		10,832,444
Retention payables to contractors		2,008,106		1,445,383
Amounts received in advance		1,504,926		365,887
Accrued interests		947,302		676,462
Others		4,451,691		3,367,437
Total		38,900,132		28,746,617

Please refer to Note 36(a)(iv) for details of accounts payable and other liabilities due to the related parties.

As at 31 December 2017 and 2016, there was no notes payable secured by notes receivable.

The carrying amounts of financial liabilities (excluding amounts received in advance) included in accounts payable and other liabilities are denominated in the following currencies:

	As at 31 December
	2017		2016
RMB		36,399,243		27,222,632
S$ (RMB equivalent)		556,881		669,797
US$ (RMB equivalent)		436,358		479,179
JPY (RMB equivalent)		2,469		6,917
EUR (RMB equivalent)		255		2,205
Total		37,395,206		28,380,730

The ageing analysis of accounts and notes payable was as follows:

	As at 31 December
	2017		2016
Within 1 year		15,201,380		11,902,522
Between 1 to 2 years		196,082		100,092
Over 2 years		99,013		56,390
Total		15,496,475		12,059,004

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Taxes payable

12 Months Ended

Dec. 31, 2017

Taxes payable [abstract]

Taxes payable

28 Taxes payable

Taxes payable comprises:

	As at 31 December
	2017		2016
VAT payable		619,329		439,304
Income tax payable		430,703		440,791
Others		252,178		209,010
Total		1,302,210		1,089,105

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Short-term bonds

12 Months Ended

Dec. 31, 2017

Short-term bonds [abstract]

Short-term bonds

29 Short-term bonds

The Company issued unsecured super short-term bonds with face values of RMB3 billion and RMB3 billion bearing annual interest rates of 2.50% and 2.60% in August 2016 and October 2016. Such bonds are denominated in RMB, issued at par and mature in 365 days. The annual effective interest rates of these bonds are 2.91% and 3.01%.The bonds had matured and were fully repaid in August 2017 and October 2017 respectively.

The Company issued unsecured super short-term bonds with face values of RMB4 billion, RMB3 billion, RMB3 billion, RMB4 billion, RMB2 billion, RMB3 billion and RMB2 billion bearing annual interest rates of 2.42%, 2.62%, 2.73%, 2.50%, 2.79%, 2.98% and 3.45% in April 2016, April 2016, May 2016, July 2016, November 2016, November 2016 and December 2016, respectively. Such bonds are denominated in RMB, issued at face value and mature in 270 days, 270 days, 270 days, 270 days, 270 days, 180 days and 270 days from the issuance dates. The annual effective interest rates of these bonds are 2.73%, 2.93%, 3.04%, 2.81%, 3.10%, 3.19%, and 3.78%, respectively. These bonds were fully repaid in January 2017, January 2017, February 2017, April 2017, August 2017, May 2017, and September 2017, respectively.

The Company issued unsecured super short-term bonds with face values of RMB4 billion RMB3 billion, RMB3 billion RMB4 billion, RMB2 billion, RMB4 billion, RMB4 billion, RMB2 billion, RMB1 billion and RMB4 billion bearing annual interest rates of 3.40%, 3.67%, 3.60%, 3.60%, 4.19%, 3.96% 4.10%, 4.19%, 4.17% and 4.17% in January 2017, February 2017, March 2017, April 2017, June 2017, August 2017, October 2017, November 2017, November 2017 and December 2017, respectively. Such bonds are denominated in RMB, issued at face value and mature in 270 days, 270days, 180 days, 90 days, 150 days, 60 days, 180 days, 180 days, 180 days and 90 days from the issuance dates. The annual effective interest rates of these bonds are 3.85%, 3.76%, 3.76%, 3.68%, 4.24%, 4.00%, 4.22%, 4.35%, 4.19%, and 4.35%, respectively. The six bonds issued in January 2017, February 2017, March 2017, April 2017, June 2017 and August 2017 were fully repaid in October 2017, November 2017, September 2017, July 2017, November 2017 and October 2017, respectively. As at 31 December 2017, interest payables for the outstanding bonds amounted to approximately RMB33.70 million, RMB10.80 million, RMB4.57 million and RMB14.17 million, respectively.

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Short-term loans

12 Months Ended

Dec. 31, 2017

Short-term loans [abstract]

Short-term loans

30 Short-term loans

Short-term loans are as follows:

	As at 31 December 2017							As at 31 December 2016
	Original currency		RMB equivalent		Annual interest rate			Original currency		RMB equivalent		Annual interest rate
	'000							'000
Secured
RMB
- Fixed rate		24,000		24,000		4.71%-5.50	%		13,500		13,500		3.00	%
- Variable rate		-		-					112,034		112,034		2.77%-3.80	%
Unsecured
RMB
- Fixed rate		10,450,248		10,450,248		3.92%-4.35	%		3,319,947		3,319,947		3.70%-4.35	%
- Variable rate		69,777,100		69,777,100		3.74%-4.35	%		54,223,393		54,223,393		3.57%-4.35	%
Total				80,251,348							57,668,874

As at 31 December 2017, short-term loans of RMB24million (31 December 2016: RMB126 million) represented the notes receivable that were discounted with recourse. As these notes receivable had not yet matured, the proceeds received were recorded as short-term loans.

As at 31 December 2017, a short-term loan borrowed from Xi'an Thermal Power Research Institute Co., Ltd ("Xi'an Thermal") amounted to RMB100 million (31 December 2016: 100 million) with annual interest rate of 4.13%(31 December 2016: 3.92%).

As at 31 December 2017, short-term loans borrowed from Huaneng Finance amounted to RMB6,505 million (31 December 2016: RMB3,355 million) with annual interest rate ranged from 3.92% to 4.35%(31 December 2016: from 3.92% to 4.13%).

As at 31 December 2017, short-term loans borrowed from a subsidiary of Huaneng Energy & Communications Holdings Co., Ltd. amounted to RMB753 million (31 December 2016: RMB0 million) with annual interest rate ranged from 3.92% to 4.13%(31 December 2016:nil).

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Deferred income tax assets and liabilities

12 Months Ended

Dec. 31, 2017

Deferred income tax assets and liabilities [abstract]

Deferred income tax assets and liabilities

31 Deferred income tax assets and liabilities

The deferred income tax assets and liabilities are as follows:

	As at 31 December
	2017			2016
Deferred income tax assets before offsetting		3,604,577			2,432,552
Offset amount		(1,304,486	)		(1,168,595	)
Deferred income tax assets after offsetting		2,300,091			1,263,957
Deferred income tax liabilities before offsetting		(5,871,166	)		(3,431,347	)
Offset amount		1,304,486			1,168,595
Deferred income tax liabilities after offsetting		(4,566,680	)		(2,262,752	)
		(2,266,589	)		(998,795	)

The gross movement on the deferred income tax accounts is as follows:

	2017			2016			2015
Beginning of the year		(998,795	)		(1,429,752	)		(926,481	)
Business combination (Note 40)		(2,322,513	)		(58,929	)		(1,007,147	)
Disposal of subsidiaries (Note 6)		17,407			-			-
Credited to profit or loss (Note 33)		724,712			440,817			687,206
Charged to other comprehensive income		330,834			87,775			(198,525	)
Currency translation differences		(18,234	)		(38,706	)		15,195
End of the year		(2,266,589	)		(998,795	)		(1,429,752	)

The movements in deferred income tax assets and liabilities during the year, without taking into consideration the offsetting of balances within the same tax jurisdictions, are as follows:

Deferred income tax assets:

	Hedging reserve			Amortization of land use rights			Provision for impairment loss			Depreciation			Accrued expenses		VAT refunds on purchases of domestically manufactured equipment			Unused tax losses			Others			Total
As at 1 January 2016		199,876			14,417			399,418			572,379			40,938		230,442			235,984			696,403			2,389,857
Business combination		-			-			66,560			6,840			-		-			-			-			73,400
(Charged)/credited to profit or loss		-			(502	)		140,969			(41,015	)		1,185		(25,433	)		(5,128	)		71,610			141,686
Charged to other comprehensive income		(182,400	)		-			-			-			-		-			-			-			(182,400	)
Currency translation differences		-			-			207			-			-		-			132			9,670			10,009
As at 31 December 2016		17,476			13,915			607,154			538,204			42,123		205,009			230,988			777,683			2,432,552
Business combination(Note 40)		-			-			-			574,600			5,052		-			139,387			414,891			1,133,930
Disposal of subsidiaries(Note 6)		-			-			(10,686	)		(9,962	)		-		-			(5,566	)		(52,270	)		(78,484	)
(Charged)/credited to profit or loss		-			(493	)		(2,593	)		(70,209	)		7,076		(25,433	)		196,613			20,026			124,987
Charged to other comprehensive income		(11,905	)		-			-			-			-		-			-			-			(11,905	)
Currency translation differences		-			-			82			-			-		-			-			3,415			3,497
As at 31 December 2017		5,571			13,422			593,957			1,032,633			54,251		179,576			561,422			1,163,745			3,604,577

Deferred income tax liabilities:

	Hedging reserve			Fair value gains			Amortization of land use rights			Depreciation			Power generation license			Mining rights			Territorial water use right			Others			Total
As at 1 January 2016		-			(645,242	)		(904,173	)		(1,291,706	)		(625,460	)		(157,215	)		(74,201	)		(121,612	)		(3,819,609	)
Business combination		-			-			(10,423	)		-			-			-			-			(121,906	)		(132,329	)
Credited to profit or loss		-			-			24,948			169,088			-			27,832			1,769			75,494			299,131
(Charged)/credited to other comprehensive loss		(26,530	)		296,705			-			-			-			-			-			-			270,175
Currency translation differences		8,131			-			(1,507	)		(26,436	)		(28,903	)		-			-			-			(48,715	)
As at 31 December 2016		(18,399	)		(348,537	)		(891,155	)		(1,149,054	)		(654,363	)		(129,383	)		(72,432	)		(168,024	)		(3,431,347	)
Business combination (Note 40)		-			(1,736	)		(148,129	)		(3,209,672	)		-			-			-			(96,906	)		(3,456,443	)
Disposal of subsidiaries(Note 6)		-			-			1,761			22,162			-			-			68,696			3,272			95,891
Credited to profit or loss		-			-			27,457			525,780			-			-			1,327			45,161			599,725
(Charged)/credited to other comprehensive loss		(5,558	)		348,297			-			-			-			-			-			-			342,739
Currency translation differences		(304	)		-			(540	)		(9,490	)		(11,397	)		-			-			-			(21,731	)
As at 31 December 2017		(24,261	)		(1,976	)		(1,010,606	)		(3,820,274	)		(665,760	)		(129,383	)		(2,409	)		(216,497	)		(5,871,166	)

As at 31 December 2017 and 2016, taxable temporary differences relating to interest in equity method investees amounted to RMB2.95 billion and RMB3.39 billion, respectively. No deferred tax liabilities were recognized as at 31 December 2017 and 2016 as dividends from investments in associates and joint ventures are exempted from the PRC income tax and the Company has no plan to dispose any of these investees in the foreseeable future.

As at 31 December 2017 and 2016, taxable temporary differences relating to the undistributed profit of a wholly-owned foreign subsidiary amounted to RMB3.06 billion and RMB3.54 billion, respectively. No deferred tax liabilities were recognized in respect of the tax that would be payable on the distribution of these retained profit as at 31 December 2017 and 2016 as the Company controls the dividend policy of the subsidiary, and it has been determined that it is probable that the profits will not be distributed in the foreseeable future.

In accordance with the accounting policy set out in Note 2(u), the Company and its subsidiaries did not recognize deferred income tax assets in respect of certain deductible temporary differences and accumulated tax losses that can be carried forward against future taxable income as follow:

	As at 31 December
	2017		2016
Deductible temporary differences		4,672,788		2,957,316
Unused tax losses		8,665,079		6,669,820
Total		13,337,867		9,627,136

The expiry dates of the tax losses of the Company and its subsidiaries for which no deferred income tax assets were recognized are summarized as follows:

	As at 31 December
	2017		2016
Year of expiry
2017		-		1,841,365
2018		1,557,045		1,122,070
2019		1,579,066		1,195,811
2020		1,524,531		1,061,468
2021		1,558,573		1,449,106
2022		2,445,864		-
Total		8,665,079		6,669,820

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Additional financial information to consolidated statements of financial position

12 Months Ended

Dec. 31, 2017

Additional financial information to consolidated statements of financial position [abstract]

Additional financial information to the consolidated statements of financial position

32 Additional financial information to the consolidated statements of financial position

As at 31 December 2017, the net current liabilities of the Company and its subsidiaries amounted to approximately RMB107,413 million (2016: RMB93,230 million). On the same date, total assets less current liabilities were approximately RMB240,639 million (2016: RMB184,643 million).

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Income tax expense

12 Months Ended

Dec. 31, 2017

Income tax expense [abstract]

Income tax expense

33 Income tax expense

	For the year ended 31 December
	2017			2016			2015
Current income tax expense		1,942,238			3,905,968			6,386,149
Deferred income tax (Note 31)		(724,712	)		(440,817	)		(687,206	)
Total		1,217,526			3,465,151			5,698,943

No Hong Kong profits tax has been provided as there were no estimated assessable profits in Hong Kong for the year (2016: nil).

The reconciliation of the effective income tax rate from the notional income tax rate is as follows:

	For the year ended 31 December
	2017			2016			2015
Notional tax on profit before income tax expense, calculated at the applicable income tax rates in the countries concerned		26.13	%		25.16	%		25.11	%
Effect of tax losses not recognized		18.45	%		1.58	%		(0.12	%)
Effect of deductible temporary differences not recognized		6.04	%		(0.20	%)		(0.16	%)
Effect of non-taxable income		(12.37	%)		(2.89	%)		(1.77	%)
Effect of non-deductible expenses		7.05	%		1.09	%		1.37	%
Others		(1.84	%)		0.35	%		0.39	%
Effective tax rate		43.46	%		25.09	%		24.82	%

The Company and its PRC branches and subsidiaries are subject to income tax at 25%, except for certain PRC branches and subsidiaries that are tax exempted or taxed at preferential tax rates, as determined in accordance with the relevant PRC income tax rules and regulations for the years ended 31 December 2017 and 2016.

Pursuant to Guo Shui Han [2009] No. 33, starting from 1 January 2008, the Company and its PRC branches calculate and pay income tax on a consolidated basis according to relevant tax laws and regulations. The original regulation specifying locations for power plants and branches of the Company to make enterprise income tax payments was abolished. The income tax of subsidiaries remains to be calculated individually based on their individual operating results.

The income tax rate applicable to Singapore subsidiaries is 17% (2016: 17%).

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Earnings per share

12 Months Ended

Dec. 31, 2017

Earnings per share [abstract]

Earnings per share

34 Earnings per share

The basic earnings per share is calculated by dividing the consolidated net profit attributable to the equity holders of the Company by the weighted average number of the Company's outstanding ordinary shares during the year:

	2017		2016		2015
Consolidated net profit attributable to equity holders of the Company		1,579,836		8,520,427		13,651,933
Less: cumulative distribution of perpetual corporate bonds		68,600		-		-
Consolidated net profit attributable to ordinary Shareholders of the Company		1,511,236		8,520,427		13,651,933
Weighted average number of the Company's outstanding ordinary shares ('000)*		15,200,383		15,200,383		14,485,383
Basic and diluted earnings per share (RMB)		0.10		0.56		0.94

*Weighted average number of ordinary shares:

	2017		2016		2015
	'000		'000		'000
Issued ordinary shares at 1 January		15,200,383		15,200,383		14,420,383
Effect of share issue		-		-		65,000
Weighted average number of
ordinary shares at 31 December		15,200,383		15,200,383		14,485,383

There was no dilutive effect on earnings per share since the Company had no dilutive potential ordinary shares for the years ended 31 December 2017 and 2016.

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Notes to consolidated statement of cash flows

12 Months Ended

Dec. 31, 2017

Consolidated Statements of Cash Flows [abstract]

Notes to consolidated statement of cash flows

35 Notes to consolidated statement of cash flows

Bank balances and cash comprised the following:

	As at 31 December
	2017		2016		2015
Total bank balances and cash		9,364,823		7,881,630		7,537,813
Less: Restricted cash		82,433		71,129		59,563
Cash and cash equivalents as at year end		9,282,390		7,810,501		7,478,250

The bank balances and cash of the Company and its subsidiaries are denominated in the following currencies:

	As at 31 December
	2017		2016		2015
RMB		8,213,100		6,691,911		5,847,363
S$ (RMB equivalent)		835,995		869,591		1,130,356
US$ (RMB equivalent)		315,535		319,944		559,761
JPY (RMB equivalent)		193		184		205
HK$ (RMB equivalent)		-		-		128
Total		9,364,823		7,881,630		7,537,813

There is no material non-cash investing and financing transactions for the years ended 31 December 2017 and 2016.

The table below details changes in the Company and its subsidiaries' liabilities from financing activities, including both cash and non-cash changes. Liabilities arising from financing activities are liabilities for which cash flows were, or future cash flows will be, classified in the Company and its subsidiaries' consolidated cash flow statement as cash flows from financing activities:

Items		Loans (Note 24,30)			Bonds (Note 25,29)			Accrued interests (Note 27)			Finance leases payables (Note 26)			Interest rate swaps contracts (liabilities) (Note 14)
As at 1 January 2017			132,220,120			42,788,810			676,462			1,088,846			169,201
(a)	Business combination		47,562,251			-			85,380			521,083			-
(b)	Changes from financing cash flows:
	Proceeds from new bank loans		140,270,455			-			-			-			-
	Repayment of bank loans		(113,769,036	)		-			-			-			-
	Proceeds from new bonds		-			38,788,679			-			-			-
	Repayment of bonds		-			(50,300,000	)		-			-			-
	Capital element of finance lease rentals paid		-			-			-			(636,145	)		-
	Interest element of finance lease rentals paid		-			-			-			(58,874	)		-
	Interest paid		-			(885,000	)		(9,195,102	)		-			-
	Others		(3,135	)		(80,643	)		-			-			-
(c)	Exchange adjustments		82,298			-			2,095			235			-
(d)	Changes in fair value		-			-			-			-			(38,558	)
(e)	Other changes:
	New finance leases		-			-			-			659,895			-
	Interest expenses		-			747,377			8,902,402			99,225			-
	Capitalised borrowing costs		-			-			476,065			-			-
	Disposal of subsidiaries		(1,166,899	)		-			-			-			-
	Others		184,710			-			-			(74,159	)		-
As at 31 December 2017			205,380,764			31,059,223			947,302			1,600,106			130,643

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Related party balances and transactions

12 Months Ended

Dec. 31, 2017

Related party balances and transactions [abstract]

Related party balances and transactions

36 Related party balances and transactions

The related parties of the Company and its subsidiaries that had transactions with the Company and its subsidiaries are as follows:

Names of related parties	Nature of relationship
Huaneng Group	Ultimate parent company
HIPDC	Parent company
Huaneng Energy & Communications Holdings Co., Ltd. and its subsidiaries	Subsidiaries of Huaneng Group*
Huaneng Property Co., Ltd. and its subsidiaries	Subsidiaries of Huaneng Group
Xi'an Thermal and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Group Technology Innovation Center	A subsidiary of Huaneng Group
Huaneng Hulunbuir Energy Development Company Ltd.and its subsidiaries	Subsidiaries of Huaneng Group
Alltrust Insurance Co., Ltd.	A subsidiary of Huaneng Group
North United Power Co., Ltd. and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Group Clean Energy Technology Research Institute Co., Ltd.	A subsidiary of Huaneng Group
Huaneng Renewables Corporation Limited and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Carbon Assets Management Company Limited	A subsidiary of Huaneng Group
Huaneng Group Hong Kong LimitedCompany	A subsidiary of Huaneng Group
Huaneng Lancangjiang Hydropower Co., Inc. and its subsidiaries	Subsidiaries of Huaneng Group
Changping Huaneng Training Center	A subsidiary of Huaneng Group
Huaneng Hainan Industry Co.,Ltd.	A subsidiary of Huaneng Group
Huaneng Baishan Coal Gangue Power Generation Co., Ltd.	A subsidiary of Huaneng Group
Great Wall Securities Co., Ltd. ("Great Wall Securities")	A subsidiary of Huaneng Group
Huaneng Nuclear Power Development Company Ltd.	A subsidiary of Huaneng Group
Huaneng Tibet Yarlung Zangbo River Hydropower Development & Investment Company Ltd. and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Xining Power Co., Ltd.	A subsidiary of Huaneng Group
Huaneng Coal Business Sector Co., Ltd. and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Integrated Industries Co., Ltd.	A subsidiary of Huaneng Group
Huaneng Ningxia Energy Company Ltd.	A subsidiary of Huaneng Group
Huaneng Shaanxi Power Generation Limited and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Xinjiang Energy Development Company Ltd. and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Gansu Energy Development Company Ltd. and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Capital Services Co., Ltd.	A subsidiary of Huaneng Group
Huaneng Shaanxi Qinling Power Generation Co., Ltd.	A subsidiary of Huaneng Group
Ningxia Daba Power Generation Co., Ltd.	A subsidiary of Huaneng Group
Huaneng Shandong Shidao Bay Nuclear Power Co., Ltd.	A subsidiary of Huaneng Group
Huangtai #8 Power Plant	An investee with significant influence
Shanghai Time Shipping	A joint venture of the Company
Jiangsu Nantong Power	A joint venture of the Company
Huaneng Yingkou Port Limited Liability Company	A joint venture of the Company
Luyi Power	A joint venture of the Company
Ruyi (Hong Kong) Energy and its subsidiaries	Joint ventures of the Company
Suzhou Sugao Renewables Service Co. Ltd.	A joint venture of the Company
Liaocheng Luxi Fuel Co., Ltd.Company	An associate of the Company
Zhengzhou Airport Xinggang Power Co., Ltd.	An associate of the Company

Names of related parties	Nature of relationship
Chongqing Huaneng Lime Company Limited	An associate of the Company
Hainan Nuclear	An associate of the Company
Sichuan Hydropower	An associate of the Company and also a subsidiary of Huaneng Group
Hanfeng Power	An associate of the Company and also a subsidiary of Huaneng Group
Tiancheng Financial Leasing	An associate of the Company and also a subsidiary of Huaneng Group
Huaneng Shidao Bay Nuclear Power Development Co., Ltd.	An associate of the Company and also a subsidiary of Huaneng Group
Xiapu Nuclear Power Co., Ltd.	An associate of the Company and also a subsidiary of Huaneng Group
Huaneng Finance	An associate of the Company and also a subsidiary of Huaneng Group
Huaneng (Tianjing) Coal Gasification Power Generation Co., Ltd.	An associate of the Company and also a subsidiary of Huaneng Group
Huaneng Group Fuel Company and its subsidiaries	Associates of the Company and also subsidiaries of Huaneng Group
Other government-related enterprises**	Related parties of the Company

* Transactions with subsidiaries of Huaneng Group which also are associates of the Company and its subsidiaries are presented as transactions with subsidiaries of Huaneng Group for note 36(a) and 36(b).

** Huaneng Group is a state-owned enterprise. In accordance with the revised IAS 24, "Related Party Disclosures", government-related enterprises, other than entities under Huaneng Group, which the PRC government has control, joint control or significant influence over are also considered as related parties of the Company and its subsidiaries ("other government-related enterprises").

The majority of the business activities of the Company and its subsidiaries are conducted with other government-related enterprises. For the purpose of the related party balances and transactions disclosure, the Company and its subsidiaries have established procedures to determine, to the extent possible, the identification of the ownership structure of its customers and suppliers as to whether they are government-related enterprises. However, many government-related enterprises have a multi-layered corporate structure and the ownership structures change over time as a result of transfers and privatization programs. Nevertheless, management believes that all material related party balances and transactions have been adequately disclosed.

In addition to the related party information shown elsewhere in these financial statements, the following is a summary of significant related party transactions entered into in the ordinary course of business between the Company and its subsidiaries and their related parties during the year and significant balances arising from related party transactions as at year end.

(a) Related party balances

(i) Cash deposits in related parties

	As at 31 December
	2017		2016
Deposits in Huaneng Finance
- Savings deposit		7,506,706		5,155,000
Deposits in Great Wall Securities
- Savings deposit		-		2
Total		7,506,706		5,155,002

For the year ended 31 December 2017, the annual interest rates for these savings deposits placed with Huaneng Finance and Great Wall Securities ranged from 0.35% to 1.35% (2016: from 0.35% to 1.35%).

(ii) As described in Note 24 and 30, certain loans of the Company and its subsidiaries were borrowed from Huaneng Group, HIPDC, Huaneng Finance, Xi'an Thermal, a subsidiary of Huaneng Energy & Communications Holdings Co., Ltd. and Tiancheng Financial Leasing.

(iii) Except for those disclosed in Note 24 and 30, the majority of the balances with Huaneng Group, HIPDC, subsidiariesof Huaneng Group, associates, joint ventures and other related parties are unsecured and within one year. As at and for the years ended 31 December 2017 and 2016, no provision is made on receivable balances from these parties.

Accounts receivable, other receivables and assets comprised the following balances due from related parties:

	As at 31 December
	2017		2016
Due from Huaneng Group		860,941		708
Due from HIPDC		99		-
Due from joint ventures		360,442		806,112
Due from associates		89,083		-
Due from subsidiaries of Huaneng Group		196,621		319,224
Due from Huangtai #8 Power Plant		903,671		-
Total		2,410,857		1,126,044

(iv) Accounts payable and other liabilities and other non-current liabilities comprised the following balances due to related parties:

	As at 31 December
	2017		2016
Due to Huaneng Group		260,306		12,232
Due to HIPDC		16,138		14,183
Due to joint ventures		336,170		325,590
Due to associates		5,751		263,154
Due to subsidiaries of Huaneng Group		4,239,688		4,145,595
Total		4,858,053		4,760,754

(v) As at 31 December 2017, included in long-term loans (including current portion) and short-term loans are loans payable to other government-related enterprises amounting to RMB203 billion (2016: RMB130 billion).

The balances with government-related enterprises also included substantially all the accounts receivable due from domestic power plants of government-related power grid companies, the bank deposits placed with government-related financial institutions as well as accounts payables and other payables arising from the purchases of coal and property, plant and equipment construction and related labor service provided by other government-related enterprises. Except for bank deposits, these balances are unsecured and the majority of receivable/repayable is within one year.

(vi) As at 31 December 2017, prepayment for construction materials to subsidiaries of Huaneng Group amounted to RMB21 million (2016: RMB67 million).

(b) Related party transactions

(i) Procurement of goods and receiving services

	For the year ended 31 December
	2017		2016		2015
Huaneng Group
Technical services and engineering contracting services		-		-		50
Other purchases		446		451		-
Subsidiaries of Huaneng Group
Purchase of coal and transportation services		19,945,752		17,212,984		16,575,700
Technical services and engineering contracting services		1,024,369		1,055,251		769,176
Purchase of equipment		347,163		483,058		302,387
Purchase of power generation quota		-		195,528		287,779
Other purchases		716		6,472		7,073
Joint ventures of the Company
Purchase of coal and transportation services		2,054,209		2,150,844		1,816,954
Entrusting other parties for power generation		28,953		-		-
An associate of the Company Other purchases		27,732		43,808		44,591

(ii) Sales of goods and providing services

	For the year ended 31 December
	2017		2016		2015
Huaneng Group
Service provided		907		-		-
HIPDC
Service provided		520		-		-
Subsidiaries of Huaneng Group
Sales of power generation quota		-		1,165		135,085
Sales of goods		1,114,347		-		-
Other sales		15,247		189,914		40,780
Service provided		25,229		31,135		50,627
Provision of entrusted power generation		58,639		-		-
Joint ventures of the Company
Service provided		319,844		59,049		133,332
Other sales		407,697		9,490		23,003
Other related party
Provision of entrusted power generation		-		-		33,129

(iii) Other related party transactions

			For the year ended 31 December
			2017		2016		2015
(1	)	Rental charge on leasehold
		HIPDC		106,885		157,264		161,941
		Subsidiaries of Huaneng Group		141,542		128,932		130,591
		A joint venture of the Company		2,128		-		-
(2	)	Rental income from leasehold
		A joint venture of the Company		7,448		7,750		10,759
		Subsidiaries of Huaneng Group		2,509		5,724		9,115
(3	)	Drawdown of loans
		Subsidiaries of Huaneng Group		15,374,480		4,035,000		2,660,500
		HIPDC		-		210		-
		Huaneng group		665,225		-		-
(4	)	Interest expense on loans
		Huaneng group		33,481		30,514		32,573
		HIPDC		10		13,136		114,687
		Subsidiaries of Huaneng Group		589,012		217,098		158,695
(5	)	Interest income on loans
		A joint venture of the Company		3,329		3,488		4,572
		An associate of the Company		917		-		-
		A Subsidiary of Huaneng Group		4,344		-		-

			For the year ended 31 December
			2017		2016		2015
(6	)	Capital injection from a subsidiary of Huaneng Group
		A subsidiary of Huaneng Group		274,752		-		286,312
(7	)	Capital injection
		A subsidiary of Huaneng Group		-		157,500		683,550
		An associate of the Company		52,200		100,418		206,230
		Joint ventures of the Company		249,716		18,200		-
(8	)	Pre-construction cost paid by
		A subsidiary of Huaneng Group		23,529		765		12,254
		An joint venture of the Company		179		-
(9	)	Finance lease payments received from
		A subsidiary of Huaneng Group		-		2,960,000		100,000
(10	)	Entrusted management fee
		Huaneng Group		13,453		24,950		24,950
(11	)	Trusteeship management income
		Huaneng Group		1,518		1,700		1,700
(12	)	Net proceeds received from investee with significant influence
		Huangtai #8 Power Plant		72,920		-		-
(13	)	Finance lease to investee with significant influence
		Huangtai #8 Power Plant		86,946		-		-
(14	)	Interest income from finance lease
		Huangtai #8 Power Plant		11,626		-		-
(15	)	Acquisition consideration
		In 2017, the Company acquired subsidiaries from Huaneng Group, please refer to Note 40(a) for details of the acquisition consideration.
(16	)	Disposal subsidiaries
		In 2017, the Company disposed Taishan Power Limited Company to a subsidiary of Huaneng Group, please refer to Note 6 for details.

Transactions with government-related enterprises

For the years ended 31 December 2017 and 2016, the Company and its domestic subsidiaries sold substantially all their products to local government-related power grid companies. Please refer to Note 5 for details of sales information to major power grid companies

For the years ended 31 December 2017 and 2016, other collectively-significant transactions with government-related enterprises also include a large portion of fuel purchases, property, plant and equipment construction and related labor employed.

(c) Guarantees

			As at 31 December
			2017		2016
(i	)	Long-term loans guaranteed by
		- Huaneng Group		1,675,147		565,992
		- HIPDC		2,099,600		2,142,000
(ii	)	Long-term bonds guaranteed by
		- HIPDC		4,000,000		4,000,000
		- Government-related banks		-		3,300,000

(d) Pre-tax benefits and social insurance of key management personnel

	For the year ended 31 December
	2017		2016		2015
Salaries		7,676		8,225		9,064
Pension		1,511		1,521		1,470
Total		9,187		9,746		10,534

(e) Related party commitments

Related party commitments which were contracted but not recognized in the consolidated statement of financial position as at the end of reporting period are as follows:

(i) Capital commitments

	As at 31 December
	2017		2016
Subsidiaries of Huaneng Group		290,041		439,571

(ii) Fuel purchase and transportation commitments

	As at 31 December
	2017		2016
Subsidiaries of Huaneng Group		1,111,649		963,306
A joint venture of the Company		279,408		291,032
Total		1,391,057		1,254,338

(iii) Operating lease commitments

	As at 31 December
	2017		2016
Subsidiaries of Huaneng Group		171,804		286,340
HIPDC		76,202		65,554
Total		248,006		351,894

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Labor cost

12 Months Ended

Dec. 31, 2017

Labor cost [abstract]

Labor cost

37 Labor cost

Other than the salaries and staff welfare, the labor cost of the Company and its subsidiaries mainly comprises the following:

All PRC employees of the Company and its subsidiaries are entitled to a monthly pension upon their retirements. The PRC government is responsible for the pension liability to these employees on retirement. The Company and its subsidiaries are required to make contributions to the publicly administered retirement plan for their PRC employees at a specified rate, currently set at 14% to 22% (2016: 14% to 22%) of the basic salary of the PRC employees. The retirement plan contributions paid by the Company and its subsidiaries for the year ended 31 December 2017 were approximately RMB1156 million (2016: RMB873 million), including approximately RMB1110 million (2016: RMB832 million) charged to profit or loss.

In addition, the Company and its subsidiaries have also implemented a supplementary defined contribution retirement scheme for PRC employees. Under this scheme, the employees are required to make a specified contribution based on the number of years of service with the Company and its subsidiaries, and the Company and its subsidiaries are required to make a contribution equal to two to four times the employees' contributions. The employees will receive the total contributions upon their retirement. For the year ended 31 December 2017, the contributions to supplementary defined contribution retirement scheme paid by the Company and its subsidiaries amounted to approximately RMB312 million (2016: RMB244 million), including approximately RMB299 million (2016: RMB233 million) charged to profit or loss.

SinoSing Power and its subsidiaries in Singapore appropriate a specified rate, currently set at 6.5% to 16% (2016: 6.5% to 16%) of the basic salary to central provident funds in accordance with the local government regulations. The contributions made by SinoSing Power and its subsidiaries for the year ended 31 December 2017 amounted to approximately RMB19.92 million (2016: RMB18.47 million), all of which were charged to profit or loss.

The Company and its subsidiaries have no further obligation for post-retirement benefits beyond the annual contributions made above.

In addition, the Company and its subsidiaries also make contributions of housing funds and social insurance to the social security institutions at specified rates of the basic salary and no more than the upper limit. The housing funds and social insurance contributions paid by the Company and its subsidiaries amounted to approximately RMB784 million (2016: RMB604 million) and RMB901 million (2016: RMB699 million) for the year ended 31 December 2017 including approximately RMB748 million (2016: RMB572 million) and RMB857 million (2016: RMB664 million) were charged to profit or loss, respectively.

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Directors', supervisors' and senior management's emoluments

12 Months Ended

Dec. 31, 2017

Directors', supervisors' and senior management's emoluments [abstract]

Directors', supervisors' and senior management's emoluments

38 Directors', supervisors' and senior management's emoluments

(a) Pre-tax benefits and social insurance of directors and supervisors

The remuneration of every director and supervisor of the Company for the year ended 31 December 2017 is set out below:

	Fees	Basic salaries	Performance salaries	Pension	Total
Name of director
Mr. Cao Peixi	-	-	-	-	-
Mr. Guo Junming1	-	-	-	-	-
Mr. Liu Guoyue	-	-	-	-	-
Mr. Fan Xiaxia2	-	-	-	-	-
Mr. Li Shiqi3	-	-	-	-	-
Mr. Huang Jian	-	-	-	-	-
Mr. Wang Yongxiang4	-	-	-	-	-
Mr. Mi Dabin	24	-	-	-	24
Mr. Guo Hongbo	-	-	-	-	-
Mr. Zhu Yousheng3	24	-	-	-	24
Ms. Li Song3	24	-	-	-	24
Mr. Cheng Heng4	-	-	-	-	-
Mr. Lin Chong4	-	-	-	-	-
Mr. Li Zhensheng3	37	-	-	-	37
Mr. Yue Heng	74	-	-	-	74
Mr. Geng Jianxin3	37	-	-	-	37
Mr. Xia Qing3	37	-	-	-	37
Mr. Xu Mengzhou	74	-	-	-	74
Mr. Liu Jizhen4	37	-	-	-	37
Mr. Xu Haifeng4	37	-	-	-	37
Mr. Zhang Xianzhi4	37	-	-	-	37
Sub-total	442	-	-	-	442
Name of supervisor
Mr. Ye Xiangdong	-	-	-	-	-
Mr. Mu Xuan	24	-	-	-	24
Ms. Zhang Mengjiao	-	-	-	-	-
Mr. Gu Jianguo	24	-	-	-	24
Ms. Zhang Xiaojun	-	137	466	124	727
Mr. Zhu Daqing	-	135	464	123	722
Sub-total	48	272	930	247	1,497
Total	490	272	930	247	1,939

The remuneration of every director and supervisor of the Company for the year ended 31 December 2016 is set out below:

	Fees	Basic salaries	Performance salaries	Pension	Total
Name of director
Mr. Cao Peixi	-	-	-	-	-
Mr. Guo Junming	-	-	-	-	-
Mr. Liu Guoyue	-	-	-	-	-
Mr. Li Shiqi	-	-	-	-	-
Mr. Huang Jian	-	-	-	-	-
Mr. Fan Xiaxia	-	327	396	122	845
Mr. Mi Dabin	48	-	-	-	48
Mr. Guo Hongbo	-	-	-	-	-
Mr. Zhu Yousheng	48	-	-	-	48
Ms. Li Song	48	-	-	-	48
Mr. Li Zhensheng	74	-	-	-	74
Mr. Zhang Shouwen	37	-	-	-	37
Mr. Yue Heng	74	-	-	-	74
Mr. Geng Jianxin	74	-	-	-	74
Mr. Xia Qing	74	-	-	-	74
Mr. Xu Mengzhou	37	-	-	-	37
Sub-total	514	327	396	122	1,359
Name of supervisor
Mr. Ye Xiangdong	-	-	-	-	-
Mr. Mu Xuan	48	-	-	-	48
Ms. Zhang Mengjiao	-	-	-	-	-
Mr. Gu Jianguo	48	-	-	-	48
Mr. Wang Zhaobin	-	51	-	-	51
Ms. Zhang Ling	-	69	-	-	69
Ms. Zhang Xiaojun	-	92	314	89	495
Mr. Zhu Daqing	-	90	313	88	491
Sub-total	96	302	627	177	1,202
Total	610	629	1,023	299	2,561

The remuneration of every director and supervisor of the Company for the year ended 31 December 2015 is set out below:

	Fees	Basic salaries	Performance salaries	Pension	Total
Name of director
Mr. Cao Peixi	-	-	-	-	-
Mr. Guo Junming	-	-	-	-	-
Mr. Liu Guoyue	-	143	663	123	929
Mr. Li Shiqi	-	-	-	-	-
Mr. Huang Jian	-	-	-	-	-
Mr. Fan Xiaxia	-	356	494	131	981
Mr. Mi Dabin	65	-	-	-	65
Mr. Guo Hongbo	12	-	-	-	12
Mr. Zhu Yousheng	24	-	-	-	24
Mr. Xu Zujian	24	-	-	-	24
Ms. Li Song	65	-	-	-	65
Mr. Li Zhensheng	74	-	-	-	74
Mr. Qi Yudong	6	-	-	-	6
Mr. Zhang Shouwen	74	-	-	-	74
Mr. Yue Heng	100	-	-	-	100
Ms. Zhang Lizi	30	-	-	-	30
Mr. Geng Jianxin	37	-	-	-	37
Mr. Xia Qing	37	-	-	-	37
Sub-total	548	499	1,157	254	2,458
Name of supervisor
Mr. Ye Xiangdong	-	-	-	-	-
Mr. Mu Xuan	65	-	-	-	65
Ms. Zhang Mengjiao	-	-	-	-	-
Mr. Gu Jianguo	49	-	-	-	49
Mr. Wang Zhaobin	-	298	385	103	786
Ms. Zhang Ling	-	133	263	53	449
Sub-total	114	431	648	156	1,349
Total	662	930	1,805	410	3,807

1 Resigned on 9 October 2017.

2 Resigned on 28 February 2018

3 Resigned on 13 June 2017.

4 Appointed on 13 June 2017.

During the year, no option was granted to the directors or the supervisors (2016: nil).

During the year, no emolument was paid to the directors or the supervisors (including the five highest paid employees) as an inducement to join or upon joining the Company or as compensation for loss of office (2016: nil).

No director or supervisor had waived or agreed to waive any emoluments during the years 2017 and 2016.

(b) Five highest paid individuals

The five individuals whose emoluments were the highest in the Company and its subsidiaries for the year include no director (2016: one director) whose emoluments are reflected in the analysis presented above. The emoluments payable to the all five (2016: remaining four) individuals during the year (within the range of nil to RMB0.79 million) are as follows:

	As at 31 December
	2017		2016		2015
Basic salaries		1,524		1,213		910
Performance salaries		1,800		1,440		1,260
Pension		648		502		365
		3,972		3,155		2,535

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Commitments

12 Months Ended

Dec. 31, 2017

Commitments [abstract]

Commitments

39 Commitments

(a) Capital commitments

Capital commitments mainly relate to the construction of new power projects, certain ancillary facilities and renovation projects for existing power plants. Details of such commitments are as follows:

	As at 31 December
	2017		2016
Contracted but not provided		16,985,439		18,603,559

(b) Operating lease commitments

The Company and its subsidiaries have various operating lease arrangements for land and buildings. Some of the leases contain renewal options and most of the leases contain escalation clauses. Lease terms do not contain restrictions on the Company and its subsidiaries' activities concerning dividends, additional debts or further leasing.

Total future minimum lease payments under non-cancelable operating leases are as follows:

	As at 31 December
	2017		2016
Land and buildings
- not later than 1 year		196,870		181,441
- later than 1 year and not later than 2 years		118,272		144,088
- later than 2 years and not later than 5 years		143,628		133,984
- later than 5 years		1,028,014		970,896
Total		1,486,784		1,430,409

In addition, in accordance with a 30-year operating lease agreement signed by Huaneng Dezhou Power Plant ("Dezhou Power Plant") and Shandong Land Bureau for the land occupied by Dezhou Power Plant Phases I and II in June 1994, annual rental amounted to approximately RMB30 million effective from June 1994 and is subject to revision at the end of the fifth year from the contract date. Thereafter, the annual rental is subject to revision once every three years. The increment for each rental revision is restricted to no more than 30% of the previous annual rental amount. For the years ended 31 December 2017 and 2016, the annual rentals was approximately RMB34 million.

(c) Fuel purchase commitments

The Company and its subsidiaries have entered into various long-term fuel supply agreements with various suppliers in securing fuel supply for various periods. All the agreements require minimum, maximum or forecasted volume purchases and subject to certain termination provisions. Related purchase commitments are as follows:

			As at 31 December 2017
	Periods		Purchase quantities	Estimated unit costs (RMB)
A government-related enterprise		2018-2039	2.8 million m3/day*		2.21/ m	3
A government-related enterprise		2018-2023	541 million m3/year*		2.06/ m	3
		2018-2023	450 million m3/year*		2.06/ m	3
		2018-2023	541 million m3/year*		2.10/ m	3
		2018-2023	450 million m3/year*		2.27/ m	3
A government-related enterprise		2018-2026	200 million m3/year*		2.38/ m	3
Other suppliers		2018-2019	243 BBtu**/day	approximately 67,000/BBtu
		2020-2021	242 BBtu**/day	approximately 67,000/BBtu
		2022	248 BBtu**/day	approximately 67,000/BBtu
		2023	247.5~256.6BBtu**/day	approximately 67,000/BBtu
		2024-2028	49.9-81.5BBtu**/day	approximately 69,000/BBtu
			As at 31 December 2016
	Periods		Purchase quantities	Estimated unit costs (RMB)
A government-related enterprise		2017-2039	2.8 million m3/day*		2.31/ m	3
A government-related enterprise		2017-2023	541 million m3/year*		2.16/ m	3
		2017-2023	450 million m3/year*		2.16/ m	3
Other suppliers		2017-2022	248BBtu**/day	approximately 63,000/BBtu
		2023	247.5-256.6BBtu**/day	approximately 63,000/BBtu
		2024-2028	49.9-59.0BBtu**/day	approximately 70,000/BBtu

*The quantities represent maximum volume, others represent minimum or forecasted volume if not specified.

**BBtu: Billion British Thermal Unit.

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Business combinations

12 Months Ended

Dec. 31, 2017

Business combinations [abstract]

Business combinations

40 Business combinations

(a) Acquisition from Huaneng Group

On 14 October 2016, the Company entered into equity transfer agreements with Huaneng Group to acquire:

• 80% equity interests of Shandong Power

•100% equity interests of Jilin Power

•100% equity interests of Heilongjiang Power

• 90% equity interests of Zhongyuan Gas

These entities are all mainly engaged in power generation and sales business. The acquisition was completed on 1 January 2017(the acquisition date), when the Company obtained the control over above mentioned entities through the corresponding voting rights obtained and consolidated them in its financial statement. The acquisition is expected to increase its generation capacity in relevant areas. The acquired business contributed consolidated revenue of RMB31.207 billion and consolidated net loss of RMB1,051 million to the Company and its subsidiaries for the period from the date of acquisition to 31 December 2017.

The total consideration is RMB15.501 billion after certain adjustment of the profits generated from the date of valuation to the acquisition date in accordance with the equity transfer agreements, which has been settled in cash by 31 December 2017 after netting off with the receivables due from Huaneng Group.

	Acquisition Date
Total consideration		15,500,770
Non-controlling interests		6,292,577
Fair value of pre-existing interest in a subsidiary of Shandong Power		690,967
Less: Fair value of total identifiable net assets		19,316,748
Goodwill		3,167,566
Total consideration		15,500,770
Less: Net settlement of the receivables due from Huaneng Group		2,361,871
Bank balances and cash of acquirees		2,342,766
Less: Restricted cash		(20,974	)
Cash consideration paid for acquisition of subsidiaries, net of cash acquired		10,817,107

Goodwill arising from the acquisitions is attributable to the synergies expected to arise after the acquisitions of the equity interests in the subsidiaries stated above. None of the goodwill recognised is expected to be deductible for tax purposes.

In addition, according to the profit compensation agreement associated with the Acquisition, Huaneng Group should compensate the Company in cash based on the shortfall of accumulated actual net profit compared with the accumulated forecast net profit of certain subsidiaries of Shandong Power during the compensation period from year 2017 to 2019.

As at 31 December 2017, the fair value of above mentioned contingent consideration from Huaneng Group amounted to RMB860 million was recognized (as at acquisition date: nil), which was recorded in other receivables and assets of RMB615 million, and other non-current assets of RMB 245 million, respectively. The actual amount of compensation will be adjusted in line with the actual performance of those subsidiaries in 2018 and 2019.

The Company incurred acquisition related cost amounted RMB26 million for financial advisory, legal and audit fees.

The assets and liabilities arising from the acquisitions of above entities are as follows:

	Shandong Power (consolidated) Fair value	Jilin Power (consolidated) Fair value	Heilongjiang Power (consolidated) Fair value	Zhongyuan Gas Fair value
Property, plant and equipment	41,366,757	8,496,028	12,525,071	1,381,060
Investment in associates and joint ventures	1,021,566	-	-	-
Available-for-sale financial assets	4,000	100,895	-	-
Land use rights	2,272,181	228,173	655,485	27,075
Deferred income tax assets	334,055	323,522	10,404	-
Other non-current assets	1,285,838	213,589	210,965	48
Bank balances and cash	1,621,276	103,045	385,295	222,939
Inventories	952,510	89,333	123,889	1,136
Trade receivables	2,509,641	293,455	127,219	124,636
Other receivables and other current assets	2,992,094	2,393,835	889,392	119,974
Long-term borrowings	(15,647,367)	(8,330,929)	(6,742,580)	(1,200,000)
Deferred income tax liabilities	(2,447,672)	(214,642)	(280,945)	(47,235)
Other non-current liabilities	(1,688,306)	(10,291)	(253,671)	-
Short-term borrowings	(8,082,200)	(600,000)	(1,920,000)	-
Tax payables	(270,531)	(10,311)	(54,302)	(419)
Dividends payables	(136,955)	-	-	-
Salary and welfare payables	(41,667)	(2,969)	(22,462)	(717)
Payables and other liabilities	(9,725,591)	(2,668,626)	(3,083,130)	(606,115)
Total identifiable net assets	16,319,629	404,107	2,570,630	22,382

The fair value of the identifiable assets and liabilities acquired in the acquisition were assessed based on independent valuation prepared by external valuers.

(b) A subsidiary transferred from a joint venture

Shanxi Xiaoyi Economic Development Zone Huaneng Energy Service Co., Ltd. ('Shanxi Xiaoyi Energy') was previously a joint venture of the Company. In 2017, non-controlling shareholder with 49% equity interests in Shanxi Xiaoyi Energy entered into a voting in concert agreement with the Company whereby it agreed to vote the same in respect of significant financial and operating decisions made by the Company effective from 15 February 2017. As a result, the Company acquired control of Shanxi Xiaoyi Energy since 15 February 2017.

	Acquisition Date
Non-controlling interests		10
Fair value of pre-existing interest in Shanxi Xiaoyi Energy		10,200
Less: Fair value of total identifiable net assets		10,210
Goodwill		-

Shanxi Xiaoyi Energy is a limited liability company established on 8 October 2016 in Xiaoyi, Shanxi Province. Shanxi Xiaoyi Energy is primarily engaging in selling of electricity, construction, operation and maintenance of power distribution and regional transmission and distribution grid. Financial information of Shanxi Xiaoyi Energy is as follows:

	From acquisition date to 31 December 2017 acquiree's
	Revenue		Net Profit
Shanxi Xiaoyi Energy		704		228

The identifiable assets and liabilities of Shanxi Xiaoyi Energy as at the acquisition date are as follows:

	Fair Value
Bank balances and cash		10,211
Accounts payable and other liabilities		(1	)
Total identifiable net assets		10,210

(c) Acquisition of Ruzhou Xuji Wind Power Generation Co., Ltd.

The Company has entered an Agreement on establishing Huaneng Ruzhou Clean Energy Co., Ltd. ("Ruzhou Clean Energy") with Beijing Xuji New Energy Technology Co., Ltd. ("Beijing Xuji") in 2017. The Company committed to contribute RMB76 million for 95% equity of Ruzhou Clean Energy. Beijing Xuji contributed the net identifiable assets of its wholly-owned subsidiary, Ruzhou Xuji Wind Power Generation Co., Ltd. ("Xuji Wind Power") which amounted to RMB4 million, for 5% equity of Ruzhou Clean Energy.

	Acquisition Date
Consideration		4,000
Less: Fair value of total identifiable net assets		4,000
Goodwill		-

Xuji Wind Power was established on 23 November 2015 in Ruzhou, Henan Province, and is mainly engaged in wind power generation and photovoltaic power generation. On the acquisition date, the project is under construction. From the acquisition date to 31 December 2017, Xuji Wind Power had not commenced operation.

	From acquisition date to 31 December 2017 acquiree's
	Revenue		Net Profit
Xuji Wind Power		-		-

The identifiable assets and liabilities of Xuji Wind Power as at the acquisition date are as follows:

	Fair Value
Other receivables and assets		16,080
Property, plant and equipment		11,893
Accounts payable and other liabilities		(23,973	)
Total identifiable net assets		4,000

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Non-controlling interests

12 Months Ended

Dec. 31, 2017

Non-controlling interests [abstract]

Non-controlling interests

41 Non-controlling interests

The following table summarizes the information relating to each of the Company and subsidiaries that have material non-controlling interests ("NCI"):

	Qinbei Power			Beijing Cogeneration			Luohuang Power			Weihai Power			Jinling Power			Yueyang Power			Shidongkou Power			Yangliuqing Cogeneration			Shandong Power			Other individually immaterial subsidiaries			Total
NCI percentage		40%			59%			40%			40%			40%			45%			50%			45%			20%
31 December 2017
Non-current assets		10,553,775			6,841,918			4,055,507			4,664,868			5,049,079			4,875,004			3,712,623			2,541,803			47,665,952
Current assets		1,738,000			1,257,485			887,225			633,012			494,312			987,812			494,073			497,441			6,891,086
Non-current liabilities		(3,053,535	)		(394,590	)		(242,944	)		(81,048	)		(1,541,444	)		(1,042,093	)		(731,640	)		(205,205	)		(19,681,891	)
Current liabilities		(5,821,543	)		(2,501,516	)		(2,064,897	)		(2,462,363	)		(1,854,441	)		(2,590,470	)		(1,919,701	)		(869,071	)		(18,695,005	)
Net assets		3,416,697			5,203,297			2,634,891			2,754,469			2,147,506			2,230,253			1,555,355			1,964,968			16,180,142
Carrying amount of NCI		1,380,594			3,050,283			1,032,938			1,101,787			859,024			1,019,016			777,678			883,340			4,697,283			5,171,095			19,973,038
Revenue		4,587,612			4,262,547			2,303,079			3,421,115			3,423,688			3,149,190			2,117,052			2,010,872			22,566,737
Net (loss)/profit		(169,261	)		541,602			(60,758	)		324,335			269,949			47,224			164,557			121,853			(800,622	)
Total comprehensive (loss)/income		(169,261	)		541,602			(60,758	)		324,335			269,949			47,224			164,557			121,853			(943,860	)
(Loss)/profit allocated to NCI		(67,704	)		319,545			(24,303	)		129,734			107,980			21,251			82,278			54,834			(287,923	)		(331,321	)		4,371
Other comprehensive (loss)/income allocated to NCI		-			-			-			-			-			-			-			-			(28,648	)		152			(28,496	)
Cash flow from operating activities		970,585			1,071,888			195,282			681,568			731,714			426,437			311,668			334,842			3,848,712
Cash flow from investment activities		(252,441	)		(1,190,093	)		(383,004	)		(231,142	)		(47,518	)		(242,288	)		(93,434	)		(64,179	)		(3,967,060	)
Cash flow from financing activities		(613,010	)		70,299			156,483			(405,196	)		(680,226	)		(191,231	)		(384,317	)		(288,299	)		(282,625	)
Net increase/ (decrease) in cash and cash equivalents		105,134			(49,605	)		(31,239	)		45,230			3,970			(7,082	)		(166,083	)		(17,586	)		(402,950	)
Dividends paid to NCI		150,000			532,966			-			160,000			179,023			65,675			133,700			71,103			220,321

	Qinbei Power			Beijing Cogeneration			Luohuang Power			Weihai Power			Jinling Power			Yueyang Power			Shidongkou Power			Yangliuqing Cogeneration			Other individually immaterial subsidiaries		Total
NCI percentage		40%			59%			40%			40%			40%			45%			50%			45%
31 December 2016
Non-current assets		11,210,604			5,821,110			3,966,880			4,988,112			5,426,759			4,958,325			3,917,340			2,654,085
Current assets		1,472,192			1,041,957			864,069			508,493			649,446			826,089			380,641			563,023
Non-current liabilities		(2,206,586	)		(152,911	)		(284,064	)		(104,952	)		(1,773,332	)		(1,150,021	)		(1,055,640	)		(224,373	)
Current liabilities		(6,475,340	)		(1,665,750	)		(1,601,236	)		(2,504,410	)		(1,835,090	)		(1,828,581	)		(1,584,142	)		(991,614	)
Net assets		4,000,870			5,044,406			2,945,649			2,887,243			2,467,783			2,805,812			1,658,199			2,001,121
Carrying amount of NCI		1,614,264			2,928,015			1,157,242			1,154,897			987,135			1,260,591			829,099			899,609			5,352,890		16,183,742
Revenue		5,006,349			4,476,729			2,436,586			3,217,209			3,734,108			2,716,817			1,915,915			1,773,869
Net profit		457,311			788,899			122,508			507,900			655,568			243,913			297,211			177,447
Total comprehensive income		457,311			788,899			122,508			507,900			655,568			243,913			297,211			177,447
Profit allocated to NCI		182,924			465,450			49,003			203,160			262,227			109,761			148,606			79,851			326,578		1,827,560
Other comprehensive income allocated to NCI		-			-			-			-			-			-			-			-			484		484
Cash flow from operating activities		1,400,042			973,352			550,346			1,045,828			1,293,565			568,379			890,615			295,547
Cash flow from investment activities		(312,604	)		(540,151	)		(189,599	)		(273,117	)		(37,274	)		(62,622	)		(258,892	)		(197,600	)
Cash flow from financing activities		(1,247,836	)		(344,718	)		(319,643	)		(786,471	)		(1,255,955	)		(521,249	)		(462,075	)		(58,293	)
Net (decrease)/increase in cash and cash equivalents		(160,398	)		88,518			41,104			(13,760	)		336			(15,492	)		169,648			39,616
Dividends paid to NCI		433,090			687,679			120,000			366,983			308,923			-			273,900			128,857

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Subsequent events

12 Months Ended

Dec. 31, 2017

Subsequent events [abstract]

Subsequent events

42 Subsequent events

(a) After the end of the reporting period, the directors proposed a final dividend. Further details are disclosed in Note 23.

(b) On 28 September 2017, Huaneng Group entered into a guarantee agreement with Industrial and Commercial Bank of China Limited ("ICBC"), to provide guarantee amounted USD100 million for short-term loans of Huaneng Shandong Ruyi (Pakistan) Energy (Private) Ltd., a subsidiary of "Ruyi (Hong Kong) Energy", which is a joint venture of Shandong Power. According to the "Proposal of Shandong Power's takeover of the guarantee agreement for short-term loans of the Sahiwal Project in Pakistan". Shandong Power is expected to issue the confirmation letter upon the approval from the general meeting of shareholders, which officially confirms with ICBC, Huaneng Group and Shandong Ruyi Technology Group Co., Ltd. that it will take over the obligation of Huaneng Group under the aforementioned guarantee agreement thereon.

On January 30 2018, the first extraordinary general meeting of the Company approved the proposal. At the date on which financial statements were approved for issue, Shandong Power is in the process of takeover the guarantee agreement. Huaneng Group are still held responsible for the guarantee agreement before the confirmation letter is issued.

(c) The Company issued super short-term bonds with face value of RMB4 billion bearing annual interest rate of 4.35% in February 2018. The bonds are denominated in RMB and mature in 90 days, with a par value of RMB100.

The Company issued super short-term bonds with face value of RMB2 billion bearing annual interest rate of 4.35% in March 2018. The bonds are denominated in RMB and mature in 90 days, with a par value of RMB100.

(d) On 5 February 2018, the Public Offering Review Committee of the China Securities Regulatory Commission reviewed the application of the Company for the non-public issuance of A Shares. According to the review results, the Company's application for non-public issuance of A Shares was approved.

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Principal accounting policies (Policies)

12 Months Ended

Dec. 31, 2017

Principal accounting policies [abstract]

Basis of preparation

(a) Basis of preparation

These financial statements have been prepared in accordance with International Financial Reporting Standards ("IFRS") as issued by the International Accounting Standards Board (the "IASB"). These financial statements have been prepared under the historical cost convention, as modified by the revaluation of available-for-sale financial assets, financial assets at fair value through profit or loss and derivative financial assets and liabilities.

The preparation of financial statements in conformity with IFRS requires the use of certain critical accounting estimates. It also requires management to exercise its judgment in the process of applying the Company and its subsidiaries' accounting policies. The areas involving a higher degree of judgment or complexity, or areas where assumptions and estimates are significant to the financial statements are disclosed in Note 4.

As at 31 December 2017, the Company and its subsidiaries have net current liabilities of approximately RMB107.4 billion, and a portion of the Company and its subsidiaries' funding requirements for capital expenditures were satisfied by short-term financing. Taking into consideration of the expected operating cash flows of the Company and its subsidiaries and the undrawn available banking facilities of approximately RMB241.9 billion as at 31 December 2017, the Company and its subsidiaries are expected to refinance certain of its short-term loans and bonds and also to consider alternative sources of financing, where applicable and when needed.

Therefore, the directors of the Company are of the opinion that the Company and its subsidiaries will be able to meet its liabilities as and when they fall due within the next twelve months and accordingly, these consolidated financial statements are prepared on a going concern basis.

The IASB has issued several amendments to IFRSs that are first effective for the current accounting period of the Company and its subsidiaries. None of these developments have had a material effect on how the Company and its subsidiaries' results and financial position for the current or prior periods have been prepared or presented. However, additional disclosure has been included in Note 35 to satisfy the new disclosure requirements introduced by the amendments to IAS 7, Statement of cash flows: Disclosure initiative, which require entities to provide disclosures that enable users of financial statements to evaluate changes in liabilities arising from financing activities, including both changes arising from cash flows and non-cash changes. The Company and its subsidiaries have not applied any new standard or interpretation that is not yet effective for current accounting period.

Consolidation

(b) Consolidation

The consolidated financial statements include the financial statements of the Company and all of its subsidiaries.

Subsidiaries are investees over which the Company and its subsidiaries have the power to exercise control. The Company and its subsidiaries control an entity when it is exposed, or have rights to variable returns from their involvement with the entity and have the ability to affect those returns through their power over the entity. In assessing whether the Company and its subsidiaries have power, only substantive rights (held by the Company and its subsidiaries and other parties) are considered.

Subsidiaries are consolidated from the date when control is transferred to the Company and its subsidiaries. They are de-consolidated from the date when control ceases. Intra-group balances, transactions and cash flows, and any unrealised income and expenses arising from intra-group transactions, are eliminated in full in preparing the consolidated financial statements. Unrealised gains arising from transactions with equity accounted investees are eliminated against the investment to the extent of the Company and its subsidiaries' interest in the investee. Unrealised losses are eliminated in the same way as unrealised gains, but only to the extent that there is no evidence of impairment. The portion of the shareholders' equity of the subsidiaries, which is not attributable directly or indirectly to the parent company, is separately presented as non-controlling interests in the shareholders' equity in the consolidated financial statements.

When there is any inconsistency on the accounting policies or financial period adopted between subsidiaries and the Company, the financial statements of subsidiaries are adjusted according to the accounting policies or financial period adopted by the Company.

(i) Business combinations

The acquisition method is used to account for the business combinations of the Company and its subsidiaries (including business combinations under common controls). The consideration transferred for the acquisition of a subsidiary is the fair values of the assets transferred, the liabilities incurred to the former owners of the acquiree and the equity interests issued by the Company and its subsidiaries. Any contingent consideration is measured at fair value at the date of acquisition. If an obligation to pay contingent consideration that meets the definition of a financial instrument is classified as equity, then it is not remeasured and settlement is accounted for within equity. Otherwise, other contingent consideration is remeasured at fair value at each reporting date and subsequent changes in the fair value of the contingent consideration are recognised in profit or loss. Acquisition-related costs are expensed as incurred. Identifiable assets acquired and liabilities and contingent liabilities assumed in a business combination are measured initially at their fair values at the acquisition date. On an acquisition-by-acquisition basis, the Company and its subsidiaries recognize any non-controlling interests in the acquiree either at fair value or at the non-controlling interest's proportionate share of the recognized amounts of acquiree's identifiable net assets. The excess of the consideration transferred, the amount of any non-controlling interest in the acquiree and the acquisition-date fair value of any previous equity interest in the acquiree over the fair value of the identifiable net assets acquired is recorded as goodwill (Note 2(i)). If this consideration is lower than the fair value of the net assets of the subsidiary acquired, the difference is recognized in profit or loss.

(ii) Changes in ownership interests in subsidiaries

Transactions with non-controlling interests that do not result in loss of control are accounted for as equity transactions - that is, as transactions with the equity owners in their capacity as owners. The difference between fair value of any consideration paid and the relevant share acquired of the carrying value of net assets of the subsidiary is recorded in equity. Gains or losses on disposals to non-controlling interests are also recorded in equity.

When the Company and its subsidiaries lose control of a subsidiary, it is accounted for as a disposal of the entire interest in that subsidiary, with a resulting gain or loss being recognized in profit or loss. Any interest retained in that former subsidiary at the date when control is lost is recognized at fair value and this amount is regarded as the fair value on initial recognition of a financial asset (Note 2(k)) or, when appropriate, the cost on initial recognition of an investment in an associate or joint venture (Note 2(b)(iii)).

(iii) Associates and joint ventures

Associates are investees over which the Company and its subsidiaries have significant influence on the financial and operating decisions. A joint venture is an arrangement whereby the Company and its subsidiaries and other parties contractually agree to share control of the arrangement, and have rights to the net assets of the arrangement.

Investments in associates and joint ventures are initially recognized at cost and are subsequently measured using the equity method of accounting, unless it is classified as held for sale (or included in a disposal group that is classified as held for sale). The excess of the initial investment cost over the proportionate share of the fair value of identifiable net assets of investee acquired is included in the initial investment cost (Note 2(i)). Any shortfall of the initial investment cost to the proportionate share of the fair value of identifiable net assets of investee acquired is recognized in current period profit or loss and long-term investment cost is adjusted accordingly.

When applying equity method, the Company and its subsidiaries adjust net profit or loss of the investees, including the fair value adjustments on the net identifiable assets of the associates and joint ventures and the adjustments to align with the accounting policies of the Company and the Company's financial reporting periods. Current period investment income is then recognized based on the proportionate share of the Company and its subsidiaries in the investees' net profit or loss. Net losses of investees are recognized to the extent of the carrying value of long-term equity investments and any other constituting long-term equity investments in investees that in substance form part of the investments in the investees. The Company and its subsidiaries continue to recognize investment losses and provision if they bear additional obligations which meet the recognition criteria.

The Company and its subsidiaries adjust the carrying amount of the investment and directly recognize into related other comprehensive income based on their proportionate share on the movements of the investees' other comprehensive income.

When the investees appropriate profit or declare dividends, the carrying value of long-term equity investments are reduced correspondingly by the proportionate share of the distribution.

The Company and its subsidiaries determine at each reporting date whether there is any objective evidence that the investment in the associate or the joint venture is impaired. If this is the case, the Company and its subsidiaries calculate the amount of impairment as the difference between the recoverable amount of the associate or the joint venture and its carrying value and recognize the amount in the consolidated statement of comprehensive income.

Profits or losses resulting from transactions between the Company and its subsidiaries and the associates and joint ventures are recognized in the Company and its subsidiaries' financial statements only to the extent of the unrelated third party investor's interests in the associates and joint ventures. Loss from transactions between the Company and its subsidiaries and the associates and joint ventures is fully recognized and not eliminated when there is evidence for asset impairment.

If an investment in an associate becomes an investment in a joint venture or vice versa, retained interest is not remeasured. Instead, the investment continues to be accounted for under the equity method.

Gains and losses arising from dilution of investments in associates and joint ventures are recognized in the consolidated statement of comprehensive income.

In all other cases, when the Company and its subsidiaries cease to have significant influence over an associate or joint control over a joint venture, it is accounted for as a disposal of the entire interest in that investee, with a resulting gain or loss being recognized in profit or loss. Any interest retained in that former investee at the date when significant influence or joint control is lost is recognized at fair value and this amount is regarded as the fair value on initial recognition of a financial asset (Note 2(k)).

Segment reporting

(c) Segment reporting

The Company and its subsidiaries determine the operating segment based on the internal organization structure, management requirement and internal reporting system for purposes of presenting reportable segment information.

An operating segment represents a component of the Company and its subsidiaries that meets all the conditions below: (i) the component earns revenue and incurs expenses in its daily operating activities; (ii) chief operating decision maker of the Company and its subsidiaries regularly reviews the operating results of the component in order to make decisions on allocating resources and assessing performance; (iii) the financial position, operating results, cash flows and other related financial information of the component are available. When the two or more operating segments exhibit similar economic characteristics and meet certain conditions, the Company and its subsidiaries combine them as one reportable segment.

Foreign currency translation

(d) Foreign currency translation

(i) Functional and presentation currency

Items included in the financial statements of each of the Company and its subsidiaries are measured using the currency of the primary economic environment in which the entity operates (the "functional currency"). The consolidated financial statements are presented in Renminbi ("RMB"), which is the Company's functional and presentation currency.

(ii) Transactions and balances

Foreign currency transactions are translated into the functional currency using the spot exchange rate on the transaction dates. As at the end of reporting period, foreign currency monetary items are translated into functional currency at the spot exchange rate as at the end of reporting period. Exchange differences are directly expensed in current period profit or loss unless they arises from foreign currency loans borrowed for purchasing or construction of qualifying assets which is eligible for capitalization or they arise from monetary items that qualify as hedging instruments in cash flow hedges which are recorded in other comprehensive income to the extent that the hedge is effective.

(iii) Foreign subsidiaries

The operating results and financial position of the foreign subsidiaries are translated into presentation currency as follows:

Asset and liability items in each statement of financial position of foreign operations are translated at the closing rates at the end of reporting period; equity items excluding retained earnings are translated at the spot exchange rates at the date of the transactions. Income and expense items in the statement of comprehensive income of the foreign operations are translated at average exchange rates approximating the rate on transaction dates. All resulting translation differences are recognized in other comprehensive income.

The cash flows denominated in foreign currencies and cash flows of overseas subsidiaries are translated at average exchange rates approximating the rates at the dates when cash flows incurred. The effect of the foreign currency translation on the cash and cash equivalents is presented in the statement of cash flows separately.

On the disposal of a foreign operation (that is, a disposal of the Company and its subsidiaries' entire interest in a foreign operation, or a disposal involving loss of control over a subsidiary that includes a foreign operation, a disposal involving loss of joint control over a joint ventures that includes a foreign operation, or a disposal involving loss of significant influence over an associate that includes a foreign operation), all of the exchange differences accumulated in equity in respect of that operation attributable to the equity holders of the Company are reclassified to profit or loss.

In the case of a partial disposal that does not result in the Company and its subsidiaries losing control over a subsidiary that includes a foreign operation, the proportionate share of accumulated exchange differences are re-attributed to non-controlling interests and are not recognized in profit or loss. For all other partial disposals (that is, reductions in the Company and its subsidiaries' ownership interest in associates or joint venture that includes a foreign operation that do not result in the Company and its subsidiaries losing significant influence or joint control), the proportionate share of the accumulated exchange difference is reclassified to profit or loss.

Property, plant and equipment

(e) Property, plant and equipment

Property, plant and equipment consists of dam, port facilities, buildings, electric utility plant in service, transportation facilities, others and construction-in-progress ("CIP"). Property, plant and equipment acquired or constructed are initially recognized at cost and carried at the net value of cost less accumulated depreciation and accumulated impairment loss, unless classified as held for sale (or included in a disposal group that is classified as held for sale).

Cost of CIP comprises construction expenditures, other expenditures necessary for the purpose of preparing the CIP for its intended use, those borrowing costs incurred before the assets are ready for intended use that are eligible for capitalization. CIP is not depreciated until such time as the relevant asset is completed and ready for its intended use.

Subsequent costs about property, plant and equipment are included in the asset's carrying amount only when it is probable that future economic benefits associated with the item will flow to the Company and its subsidiaries and the cost of the item can be measured reliably. The carrying amount of the replaced part is derecognized. Other subsequent expenditures not qualified for capitalization are charged in the current period profit or loss when they are incurred.

Depreciation of property, plant and equipment is provided based on book value of the asset less estimated residual value over the estimated useful life using straight-line method. For those impaired property, plant and equipment, depreciation is provided based on book value after deducting impairment provision over the estimated useful life of the asset. The estimated useful lives are as follows:

	Estimated useful lives
Dam	8 - 50 years
Port facilities	20 - 40 years
Buildings	8 - 30 years
Electric utility plant in service	5 - 30 years
Transportation facilities	8 - 27 years
Others	5 - 14 years

Where parts of an item of property, plant and equipment have different useful lives, the cost of the item is allocated on a reasonable basis between the parts and each part is depreciated separately. At the end of each year, the Company and its subsidiaries review the estimated useful lives, residual values and the depreciation method of the property, plant and equipment and make adjustment when necessary.

Property, plant and equipment is derecognized when it is disposed of, or is not expected to bring economic benefit through use or disposal. The amount of disposal proceeds arising from sale, transfer, disposal or write-off of the property, plant and equipment less book value and related tax expenses is recorded in 'operating expenses - others' in the statement of comprehensive income.

The carrying amount of property, plant and equipment is written down immediately to its recoverable amount when its carrying amount is greater than its recoverable amount (Note 2(j)).

Investment property

(f) Investment property

Investment properties are land and/or buildings which are owned or held under a leasehold interest (Note 2(y)) to earn rental income and/or for capital appreciation. These include land held for a currently undetermined future use and property that is being constructed or developed for future use as investment property.

Investment properties are stated at fair value, unless they are still in the course of construction or development at the end of the reporting period and their fair value cannot be reliably measured at that time. Any gain or loss arising from a change in fair value or from the retirement or disposal of an investment property is recognized in profit or loss. Rental income from investment properties is accounted for as described in Note 2(x)(vi).

Power generation license

(g) Power generation license

The Company and its subsidiaries acquired the power generation license as part of the business combination with Tuas Power Ltd. ("Tuas Power"). The power generation license is initially recognized at fair value at the acquisition date. The license has an indefinite useful life and is not amortized. The assessment that the license has an indefinite useful life is based on the expected renewal of power generation license without significant restriction and cost, together with the consideration on related future cash flows generated and the expectation of continuous operations. It is tested annually for impairment and carried at cost less accumulated impairment loss. Useful life of the power generation license is reviewed by the Company and its subsidiaries each financial period to determine whether events and circumstances continue to support the indefinite useful life assessment.

Mining rights

(h) Mining rights

Mining rights are stated at cost less accumulated amortization and impairment losses (Note 2(j)) and are amortized based on the units of production method utilizing only recoverable coal reserves as the depletion base, unless the mining rights are classified as held for sale (or included in a disposal group that is classified as held for sale).

Goodwill

(i) Goodwill

Goodwill arising from the acquisitions of subsidiaries, associates and joint ventures represents the excess of the consideration transferred, the amount of any non-controlling interest in the acquiree and the acquisition-date fair value of any previous equity interest in the acquiree over the Company and its subsidiaries' share of the net fair value of the net identifiable assets, liabilities and contingent liabilities of the acquiree at the date of acquisition.

Goodwill is stated at cost less accumulated impairment losses. Goodwill arising on a business combination is allocated to each cash-generating unit, or groups of cash generating units, that is expected to benefit from the synergies of the combination and is tested annually for impairment (Note 2(j)).

On disposal of a cash generating unit during the year, any attributable amount of purchased goodwill is included in the calculation of the profit or loss on disposal.

Impairment of non-financial assets

(j) Impairment of non-financial assets

The carrying amounts of property, plant and equipment, mining rights, intangible assets with definite useful lives, land use rights and long-term equity investments not accounted for as financial assets are reviewed at each reporting date to determine whether there is any indication of impairment. If any such indication exists, then the asset's recoverable amount is estimated. Goodwill, indefinite-lived intangible assets and intangible assets not yet available for sale are tested for impairment annually regardless of whether there are indications of impairment or more frequently if events or changes in circumstances indicate a potential impairment. An impairment loss is recognized if the carrying amount of an asset or cash-generating unit ("CGU") exceeds its recoverable amount.

The recoverable amount of an asset or CGU is the greater of its value in use and its fair value less cost to sell. For impairment testing, assets are grouped together into the smallest group of assets that generates cash inflows from continuing use that are largely independent of the cash inflows of other assets or CGUs.

Subject to an operating segment ceiling test, CGUs to which goodwill has been allocated are aggregated so that the level at which impairment testing is performed reflects the lowest level at which goodwill is monitored for internal reporting purposes.

Goodwill acquired in a business combination is allocated to groups of CGUs that are expected to benefit from the synergies of the combination.

Impairment losses are recognized in profit or loss. Impairment losses recognized in respect of CGUs are allocated first to reduce the carrying amount of any goodwill allocated to the CGU (group of CGUs), and then to reduce the carrying amounts of the other assets in the CGU (group of CGUs) on a pro rata basis, except that the carrying value of an asset will not be reduced below its individual fair value less costs of disposal (if measurable) or value in use (if determinable).

An impairment loss in respect of goodwill is not reversed. Except for goodwill, all impaired non-financial assets are subject to review for possible reversal of impairment at each reporting date. A reversal of an impairment loss is limited to the asset's carrying amount that would have been determined had no impairment loss been recognized in prior year. Reversals of impairment losses are credited to profit or loss in the year in which the reversals are recognized.

Financial instruments

(k) Financial instruments

Financial assets are classified in the following categories at initial recognition: at fair value through profit or loss, loans and receivables and available-for-sale. The classification depends on the intention and ability of the Company and its subsidiaries to hold the financial assets.

(i) Financial assets at fair value through profit or loss

Financial assets at fair value through profit or loss include financial assets held for trading and designated upon initial recognition as at fair value through profit or loss, and contingent consideration of the acquirer in a business combination. A financial asset is classified in this category if acquired principally for the purpose of selling in the short term. Derivatives are classified as held for trading unless they are designated as hedges. Assets in this category are classified as current assets if expected to be settled within 12 months; otherwise, they are classified as non-current.

(ii) Loans and receivables

Loans and receivables refer to the non-derivative financial assets for which there is no quotation in the active market with fixed or determinable amount. They are included in current assets, except for maturities greater than 12 months after the end of reporting period which are classified as non-current assets. Loans and receivables are primarily included in as 'accounts receivable', 'other receivables and assets' and 'other non-current assets' in the statement of financial position.

(iii) Available-for-sale financial assets

Available-for-sale financial assets are non-derivative financial assets that are either designated in this category or not classified in any of the other categories. They are included in current assets when management intends to dispose of the available-for-sale financial assets within 12 months of the end of reporting period, otherwise, they are classified as non-current assets.

(iv) Recognition and measurement

Regular purchases and sales of financial assets are recognized at fair value initially on trade-date - the date on which the Company and its subsidiaries commit to purchase or sell the asset. Transaction costs relating to financial assets at fair value through profit or loss are directly expensed in the profit or loss as incurred. Transaction costs for other financial assets are included in the carrying amount of the asset at initial recognition. Financial assets are derecognized when the rights to receive cash flows from the financial assets have expired or have been transferred and all risks and rewards related to the ownership of the financial assets have been transferred to the transferee.

Financial assets at fair value through profit or loss and available-for-sale are subsequently measured at fair value. When an active market exists for a financial instrument, fair value is determined based on quoted prices in the active market. When no active market exists, fair value is determined by using valuation techniques. When applying valuation techniques, the Company and its subsidiaries maximize the use of relevant observable inputs and minimize the use of unobservable inputs.

Changes in the fair value of financial assets at fair value through profit or loss are recorded in 'gain/(loss) on fair value changes of financial assets/liabilities'.

Investments in equity instruments that do not have a quoted market price in an active market and whose fair value cannot be reliably measured are measured at cost. Loans and receivables are carried at amortized cost using the effective interest method.

Except for impairment loss and translation differences on monetary financial assets, changes in the fair value of available-for-sale financial assets are recognized in other comprehensive income. When these financial assets are derecognized, the accumulated fair value adjustments recognized in equity are included in the statement of comprehensive income as 'other investment income'. Dividends on available-for-sale financial assets are recorded in 'other investment income' when the right of the Company and its subsidiaries to receive payments is established.

(v) Impairment of financial assets

Except for financial assets at fair value through profit or loss, the Company and its subsidiaries perform assessment on the book value of financial assets at the end of reporting period. Provision for impairment is made when there is objective evidence showing that a financial asset is impaired.

For investments in associates and joint ventures, the impairment loss is measured by comparing the recoverable amount of the investment with its carrying amount.

The impairment loss is reversed if there has been a favourable change in the estimates used to determine the recoverable amount.

In the case of equity investments classified as available for sale, a significant or prolonged decline in the fair value of the investment below its cost is evidence that the assets are impaired. If any such evidence exists for available-for-sale financial assets, the cumulative loss, measured as the difference between the acquisition cost and the current fair value, less any impairment loss on that financial asset previously recognized in profit or loss, is removed from equity and recognized in profit or loss. Impairment losses recognized in the profit or loss on equity instruments are not reversed through the profit or loss.

When financial assets carried at amortized cost are impaired, the carrying amount of the financial assets is reduced to the present value of estimated future cash flows (excluding future credit losses that have not been incurred) discounted at the financial asset's original effective interest rate. The impaired amount is recognized as assets impairment loss in the current period. If there is objective evidence that the value of the financial assets has recovered as a result of objective changes in circumstances occurring after the impairment loss was originally recognized, the originally recognized impairment loss is reversed through profit or loss. For the impairment test of receivables, please refer to Note 2(l).

(vi) Derivative financial instruments and hedging activities

Derivatives are initially recognized at fair value on the date a derivative contract is entered into and are subsequently remeasured at their fair value. Gain or loss arising from subsequent change in the fair value of derivative financial instruments is recognized in profit or loss except for the effective portions of gain or loss on the derivative financial instruments designated as cash flow hedges which are recognized directly in other comprehensive income. Cash flow hedge represents a hedge against the exposure to variability in cash flows, which such cash flow is originated from a particular risk associated with highly probable forecast transactions and variable rate borrowings and which could affect the statement of comprehensive income.

The hedged items of cash flow hedge are the designated items with respect to the risks associated with future cash flow change resulting from variability in cash flows of a recognized asset or liability or a highly probable forecast transaction or the foreign currency risk of a committed future transaction. Hedging instruments are designated derivative for cash flow hedge whose cash flows are expected to offset changes in the cash flows of a hedged item.

The full fair value of a hedging derivative is classified as a non-current asset or liability when the remaining maturity of the hedge item is more than 12 months.

The Company and its subsidiaries document their assessments, both at hedge inception and on an ongoing basis, of whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in cash flows of hedged items. The Company and its subsidiaries apply ratio analysis method to evaluate the ongoing effectiveness of the cash flow hedge.

The effective portion of changes in the fair value of derivatives that are designated and qualify as cash flow hedges are recognized in other comprehensive income. The gain or loss relating to the ineffective portion is recognized immediately in the statement of comprehensive income within 'gain/(loss) on fair value changes of financial assets/liabilities'.

Amounts accumulated in equity are reclassified to the profit or loss in the periods when the hedged item affects profit or loss. The gain or loss relating to the effective portion of interest rate swaps hedging variable rate borrowings is recognized in the statement of comprehensive income within 'interest expense'. The gain or loss relating to the effective portion of exchange forward hedging foreign currency denominated payables is recognized in the statement of comprehensive income within 'exchange gain/(loss) and bank charges, net'. However, when the forecast transaction that is hedged results in the recognition of a non-financial asset, the gains and losses previously deferred in equity are transferred from equity and included in the initial measurement of the cost of the asset. In the case where the Company and its subsidiaries expect all or a portion of net loss previously recognized directly in other comprehensive income will not be recovered in future financial periods, the irrecoverable portion will be reclassified into profit or loss.

When a hedging instrument expires or is sold, terminated or exercised or when a hedge no longer meets the criteria for hedge accounting, the Company and its subsidiaries will discontinue hedge accounting. Any cumulative gain or loss existing in equity at that time remains in equity and is subsequently recognized when the forecast transaction is ultimately recognized in the profit or loss. When a forecast transaction is no longer expected to occur, the cumulative gain or loss that was reported in equity is immediately transferred to the statement of comprehensive income within 'gain/(loss) on fair value changes of financial assets/liabilities'.

Loans and receivables

(l) Loans and receivables

Loans and receivables, which primarily include accounts receivable, other receivables and other non-current assets, are recognized initially at fair value. Loans and receivables are subsequently measured at amortized cost less provision for doubtful debts using the effective interest method.

The Company and its subsidiaries establish an allowance for impairment that represents its estimate of incurred losses in respect of receivables. The main components of this allowance are a specific loss component that relates to individually significant exposures, and a collective loss component established for groups of similar assets in respect of losses that have been incurred but not yet identified. The collective loss allowance is determined based on historical data of payment statistics for similar financial assets.

When there is objective evidence that the Company and its subsidiaries will not be able to collect all amounts due according to the original terms of the receivables, impairment test is performed and related provision for doubtful accounts is made based on the shortfall between carrying amounts and respective present value of estimated future cash flows. The carrying amounts of the receivables are reduced through the use of allowance accounts, and the amount of the provision is recognized in the statement of comprehensive income within 'operating expenses - others'. When a receivable is uncollectible, it is written off against the allowance account for the receivable. Subsequent recoveries of amounts previously written off are credited against 'operating expenses - others' in the statement of comprehensive income.

Inventories

(m) Inventories

Inventories include fuel for power generation, materials for repairs and maintenance and spare parts, and are stated at lower of cost and net realizable values.

Inventories are initially recorded at cost and are charged to fuel costs or repairs and maintenance, respectively when used, or capitalized to property, plant and equipment when installed, as appropriate, using weighted average cost basis. Cost of inventories includes costs of purchase and transportation costs.

When the forecast transaction that is hedged results in the recognition of the inventory, the gains and losses previously deferred in equity are transferred from equity and included in the initial measurement of the cost of the inventory.

Provision for inventory obsolescence is determined by the excess of cost over net realizable value. Net realizable values are determined based on the estimated selling price less estimated conversion costs during power generation, selling expenses and related taxes in the ordinary course of business.

Related parties

(n) Related parties

Parties are considered to be related if one party has the ability, directly or indirectly, to control the other party or exercise significant influence over the other party in making financial and operating decisions. Parties are also considered to be related if they are subject to common control or jointly control of the same third party; one party is controlled or jointly controlled by a third party and the other party is an associate or a joint venture of the same third party.

Cash and cash equivalents

(o) Cash and cash equivalents

Cash and cash equivalents listed in the statement of cash flows represents cash in hand, call deposits held with banks and other financial institutions, and other short-term (3 months or less), highly-liquid investments that are readily convertible to known amounts of cash and are subject to an insignificant risk of changes in value. Bank overdrafts that are repayable on demand and form an integral part of the cash management are also included as a component of cash and cash equivalents for the purpose of the consolidated statement of cash flow.

Borrowings

(p) Borrowings

Borrowings are recognized initially at fair value less transaction costs and subsequently measured at amortized cost using the effective interest method. Borrowings are classified as current liabilities unless the Company and its subsidiaries have an unconditional right to defer settlement of the liability for at least 12 months after the end of reporting period.

Borrowing costs

(q) Borrowing costs

General and specific borrowing costs directly attributable to the acquisition, construction or production of qualifying assets, which are assets that necessarily take a substantial period of time to get ready for their intended use or sale, are added to the cost of those assets. The capitalization of borrowing costs as part of the cost of a qualifying asset commences when expenditure for the asset is being incurred, borrowing costs are being incurred and activities that are necessary to prepare the asset for its intended use or sale are in progress. Capitalization of borrowing costs is suspended or ceases when substantially all the activities necessary to prepare the qualifying asset for its intended use or sale are interrupted or complete.

The amount of specific borrowing costs capitalized is net of the investment income on any temporary investment of the funds pending expenditure on the asset.

All other borrowing costs are recognized in profit or loss in the period in which they are incurred.

Share Capital

(r) Share Capital

Ordinary shares are classified as equity. Incremental costs directly attributable to the issue of new shares are shown in equity as a deduction, net of tax, from the proceeds.

Perpetual corporate bond

(s) Perpetual corporate bond

Perpetual corporate bond is classified as equity if it is non-redeemable, or redeemable only at the Company's option, and any interests are discretionary. Interests on perpetual corporate bonds classified as equity are recognised as distributions within equity.

Payables

(t) Payables

Payables primarily include accounts payable and other liabilities, and are recognized initially at fair value and subsequently measured at amortized cost using the effective interest method.

Taxation

(u) Taxation

(i) Value-added tax ("VAT")

The domestic power, heat and goods sales of the Company and its subsidiaries are subject to VAT. VAT payable is determined by applying 17% (13% or 11% on heat) on the taxable revenue after offsetting deductible input VAT of the period.

The applicable tax rate of VAT in respect of the lease of tangible movable properties, transportation industry and other modern services industry are 17%, 11% and 6%, respectively.

According to the relevant regulations of Ministry of Finance of PRC and State Administration of Taxation, the transformation from Business Tax to VAT launched nation-wide from 1 May 2016 and all business tax taxpayers in the construction industry, real estate industry, financial industry, living services were included. The applicable tax rate of VAT in respect of sectors including construction services, lease of immovables, sale of immovables and transfer of land use rights is 11%, and in respect of financial and living services is 6%.

(ii) Goods and service tax ("GST")

The power sales of the subsidiaries in Singapore are subject to goods and service tax of the country where they operate. GST payable is determined by applying 7% on the taxable revenue after offsetting deductible GST of the period.

(iii) Current and deferred income tax

The income tax expense for the period comprises current and deferred income tax. Income tax expense is recognized in profit or loss, except to the extent that it relates to items recognized in other comprehensive income or directly in equity. In this case, the tax is also recognized in other comprehensive income or directly in equity, respectively.

Deferred income tax assets and liabilities are recognized based on the differences between tax bases of assets and liabilities and respective book values (temporary differences). For deductible tax losses or tax credit that can be brought forward in accordance with tax law requirements for deduction of taxable income in subsequent years, it is considered as temporary differences and related deferred income tax assets are recognized. No deferred income tax liability is recognized for temporary difference arising from initial recognition of goodwill. For those temporary differences arising from initial recognition of an asset or liability in a non-business combination transaction that affects neither accounting profit nor taxable profit (or deductible loss) at the time of the transaction, no deferred income tax asset and liability is recognized. The temporary differences relating to investments in subsidiaries to the extent that, in the case of taxable differences, the Company and its subsidiaries control the timing of the reversal and it is probable that the differences will not reverse in the foreseeable future, or in the case of deductible differences, unless it is probable that they will reverse in the future.

The Company and its subsidiaries recognize deferred income tax assets to the extent that it is probable that taxable profit will be available to offset the deductible temporary difference, deductible tax loss and tax credit.

At the end of reporting period, deferred income tax assets and liabilities are measured at the tax rates that are expected to apply to the period when the asset is realized or liability is settled.

The carrying amount of a deferred tax asset is reviewed at the end of each reporting period and is reduced to the extent that it is no longer probable that sufficient taxable profits will be available to allow the related tax benefit to be utilised. Any such reduction is reversed to the extent that it becomes probable that sufficient taxable profits will be available.

Deferred income tax assets and deferred income tax liabilities are offset when meeting all the conditions below:

(1) The Company and its subsidiaries have the legal enforceable right to offset current income tax assets and current income tax liabilities;

(2) Deferred income tax assets and deferred income tax liabilities are related to the income tax levied by the same tax authority of the Company and its subsidiaries.

Employee benefits

(v) Employee benefits

Employee benefits include all expenditures relating to the employees for their services. The Company and its subsidiaries recognize employee benefits as liabilities during the accounting period when employees render services and allocate to related cost of assets and expenses based on different beneficiaries.

In connection with pension obligations, the Company and its subsidiaries operate various defined contribution plans in accordance with the local conditions and practices in the countries and provinces in which they operate. A defined contribution plan is a pension plan under which the Company and its subsidiaries pay fixed contributions into a separate publicly administered pension insurance plan on mandatory and voluntary bases. The Company and its subsidiaries have no legal or constructive obligations to pay further contributions if the fund does not hold sufficient assets to pay all employees the benefits relating to employee service in the current and prior periods. The contributions are recognized as employee benefit when incurred. Prepaid contributions are recognized as assets to the extent that a cash refund or a reduction in the future payment is available.

Government grants

(w) Government grants

Government grants are recognized when the Company and its subsidiaries fulfill the conditions attached to them and they are probable to be received. When government grants are received in the form of monetary assets, they are measured at the amount received or receivable. When the grant is in the form of non-monetary assets, it is measured at fair value. When fair value cannot be measured reliably, nominal amount is assigned.

Asset-related government grant is recognized as deferred income and is amortized evenly in profit or loss over the useful lives of related assets.

Income-related government grant that is used to compensate subsequent related expenses or losses of the Company and its subsidiaries are recognized as deferred income and recorded in the profit or loss when related expenses or losses incurred. When the grant is used to compensate expenses or losses that were already incurred, they are directly recognized in current period profit or loss.

Revenue and income recognition

(x) Revenue and income recognition

Revenue and income are recognized based the following methods:

Revenue and income are recognized when it is probable that the economic benefits associated with the transaction will flow to the Company and its subsidiaries and the amount of the revenue and income can be measured reliably.

(i) Electricity and heat sales revenue

Electricity and heat sales revenue represents the fair value of the consideration received or receivable for electricity and heat sold in the ordinary course of the activities of the Company and its subsidiaries (net of VAT or GST). Revenue is earned and recognized upon transmission of electricity to the customers or the power grid controlled and owned by the respective regional or provincial grid companies.

(ii) Goods sales revenue

Goods sales revenue represents the fair value of the consideration received or receivable for the sale of the goods in the ordinary course of the activities of the Company and its subsidiaries. Goods sales revenue is recognized when the goods is delivered to the customers and there is no unfulfilled obligation that could affect the customer's acceptance of the goods.

(iii) Service revenue

Service revenue refers to amounts received from service of port loading, conveying and transportation. The Company and its subsidiaries recognize revenue when the relevant service is provided.

(iv) Dividend income

Dividend income from unlisted investments is recognized when the shareholder's right to receive payment is established. Dividend income from listed investments is recognized when the share price of the investment goes ex-dividend.

(v) Interest income

Interest income from deposits is recognized on a time proportion basis using effective interest method. Interest income from the finance lease is recognized on a basis that reflects a constant periodic rate of return on the net investment in the finance lease.

(vi) Rental income from operating leases

Rental income receivable under operating leases is recognized in profit or loss in equal instalments over the periods covered by the lease term, except where an alternative basis is more representative of the pattern of benefits to be derived from the use of the leased asset. Lease incentives granted are recognized in profit or loss as an integral part of the aggregate net lease payments receivable. Contingent rentals are recognized as income in the accounting period in which they are earned.

Leases

(y) Leases

Leases where all the risks and rewards incidental to ownership of the assets are in substance transferred to the lessees are classified as finance leases. All other leases are operating leases.

(i) Operating leases

Operating lease expenses are capitalized or expensed on a straight-line basis over the lease term.

The cost of acquiring land held under an operating lease is amortized on a straight-line basis over the period of the lease term.

(ii) Finance lease

The Company and its subsidiaries recognize the aggregate of the minimum lease receipts and the initial direct costs on the lease inception date as the receivable. The difference between the aggregate of the minimum lease receipts and the initial direct costs and sum of their respective present values is recognized as unrealized finance income. The Company and its subsidiaries adopt the effective interest method to allocate such unrealized finance income over the lease term. At the end of reporting period, the Company and its subsidiaries present the net amount of finance lease receivable after deducting any unrealized finance income in non-current assets and current assets, respectively.

Please refer to Note 2(k)(u) for impairment test on finance lease receivables.

Where the Company and its subsidiaries acquire the use of assets under finance leases, the amounts representing the fair value of the leased asset, or, if lower, the present value of the minimum lease payments, of such assets are included in fixed assets and the corresponding liabilities, net of finance charges, are recorded as obligations under finance leases. Depreciation is provided at rates which write off the cost or valuation of the assets over the term of the relevant lease or, where it is likely the Company and its subsidiaries will obtain ownership of the asset, the life of the asset, as set out in Note 2(e). Impairment losses are accounted for in accordance with the accounting policy as set out in Note 2(j). Finance charges implicit in the lease payments are charged to profit or loss over the period of the leases so as to produce an approximately constant periodic rate of charge on the remaining balance of the obligations for each accounting period. Contingent rentals are charged to profit or loss in the accounting period in which they are incurred.

Purchase of electricity

(z) Purchase of electricity

The overseas subsidiary of the Company recognizes electricity purchase cost when it purchases the electricity and transmits to its customers.

Financial guarantee contracts

(aa) Financial guarantee contracts

The Company issues financial guarantee contracts that transfer significant insurance risk. Financial guarantee contracts are those contracts that require the issuer to make specified payments to reimburse the holders for losses they incur because specified debtors fail to make payments when due in accordance with the original or modified terms of debt instruments. Where the Company issues a financial guarantee, the fair value of the guarantee is initially recognized as deferred income within accounts payable and other liabilities. The fair value of financial guarantees issued at the time of issuance is determined by reference to fees charged in an arm's length transaction for similar services, when such information is obtainable, or is otherwise estimated by reference to interest rate differentials, by comparing the actual rates charged by lenders when the guarantee is made available with the estimated rates that lenders would have charged, had the guarantees not been available, where reliable estimates of such information can be made. Where consideration is received or receivable for the issuance of the guarantee, the consideration is recognized in accordance with the Company's policies applicable to that category of asset. Where no such consideration is received or receivable, an immediate expense is recognized in profit or loss on initial recognition of any deferred income. The amount of the guarantee initially recognized as deferred income is amortized in profit or loss over the term of the guarantee as income from financial guarantees issued. In addition, provisions are recognised if and when (i) it becomes probable that the holder of the guarantee will call upon the Company under the guarantee, and (ii) the amount of that claim on the Company is expected to exceed the amount currently carried in trade and other payables in respect of the guarantee, i.e. the amount initially recognised, less accumulated amortisation.

Dividend distribution

(ab) Dividend distribution

Dividend distribution to the shareholders of the Company and its subsidiaries is recognized as a liability in the period when the dividend is approved in the shareholders' meeting.

Contingencies

(ac) Contingencies

Contingent liabilities are not recognized in the financial statements. They are disclosed unless the possibility of an outflow of resources embodying economic benefits is remote. Contingent assets are not recognized in the financial statements but disclosed when an inflow of economic benefit is probable.

Standards and amendments to published standards that are not yet effective but relevant to the Company and its subsidiaries

(ad) Standards and amendments to published standards that are not yet effective but relevant to the Company and its subsidiaries

The following are standards or amendments to existing standards that have been published and are mandatory for the accounting periods beginning on or after 1 January 2018, but the Company and its subsidiaries have not early adopted:

• IFRIC 22,"Foreign currency transactions and advance consideration", which will be effective for accounting periods beginning on or after 1 January 2018.

• IFRS 15, "Revenue from contracts with customers", which will be effective for accounting periods beginning on or after 1 January 2018.

• IFRS 9, "Financial instrument (2014)", which will be effective for accounting periods beginning on or after 1 January 2018.

• IFRS 16, "Leases", which will be effective for accounting periods beginning on or after 1 January 2019.

• Amendments to IAS 40, "Investment property: Transfers of investment property", which will be effective for accounting periods beginning on or after 1 January 2018.

• IFRIC 23, "Uncertainty over income tax treatments", which will be effective for accounting periods beginning on or after 1 January 2019.

• Included in "Annual improvements to IFRSs 2014-2016 Cycle", IAS 28, "Investments in Associates and Joint Ventures", which will be effective for accounting periods beginning on or after 1 January 2018.

The Company and its subsidiaries are in the process of making an assessment of what the impact of these amendments and new standards is expected to be in the period of initial application. While the assessment has been substantially completed for IFRS 9 and IFRS 15, the actual impacts upon the initial adoption of the standards may differ as the assessment completed to date is based on the information currently available to the Company and its subsidiaries, and further impacts may be identified before the standards are initially applied in the Company and its subsidiaries' interim financial report for the six months ending 30 June 2018. The Company and its subsidiaries may also change its accounting policy elections, including the transition options, until the standards are initially applied in that financial report.

(i) IFRS 9, Financial instruments (2014)

IFRS 9 will replace the current standard on accounting for financial instruments, IAS 39, Financial instruments: Recognition and measurement. IFRS 9 introduces new requirements for classification and measurement of financial assets, including the measurement of impairment for financial assets and hedge accounting. On the other hand, IFRS 9 incorporates without substantive changes the requirements of IAS 39 for recognition and derecognition of financial instruments and the classification and measurement of financial liabilities.

IFRS 9 is effective for annual periods beginning on or after 1 January 2018 on a retrospective basis. The Company and its subsidiaries plan to use the exemption from restating comparative information and will recognise any transition adjustments against the opening balance of equity at 1 January 2018.

Expected impacts of the new requirements on the consolidated financial statements are as follows:

• The Company and its subsidiaries have assessed that their financial assets currently measured at amortised cost and FVTPL will continue with their respective classification and measurements upon the adoption of IFRS 9;

• With respect to the Company and its subsidiaries' financial assets currently classified as "available-for-sale", these are equity investments which the Company and its subsidiaries have the option to irrevocably designate as FVTOCI (without recycling) on transition to IFRS 9. The Company and its subsidiaries plan to elect this designation option for any of the investments held on 1 January 2018 and will recognise any fair value changes in respect of these investments in other comprehensive income as they arise. The Company and its subsidiaries are in the process of assessing the fair value of the available-for-sale financial assets currently measured at cost less impairment and will disclose the impact to the opening balance of the Company and its subsidiaries' equity as 1 January 2018 in interim financial report for the six months ending 30 June 2018.

• The classification and measurement requirements for financial liabilities under IFRS 9 are largely unchanged from IAS 39, except that IFRS 9 requires the fair value change of a financial liability designated at FVTPL that is attributable to changes of that financial liability's credit risk to be recognised in other comprehensive income (without reclassification to profit or loss). The Company and its subsidiaries currently do not have any above mentioned financial liabilities designated at FVTPL and therefore this new requirement will not have any impact on the Company and its subsidiaries on adoption of IFRS 9.

• The new impairment model in IFRS 9 replaces the "incurred loss" model in IAS 39 with an "expected credit loss" model. Under the expected credit loss model, it will no longer be necessary for a loss event to occur before an impairment loss is recognised. Instead, an entity is required to recognise and measure either a 12-month expected credit loss or a lifetime expected credit loss, depending on the asset and the facts and circumstances. The Company and its subsidiaries expect that the application of the expected credit loss model will result in earlier recognition of credit losses. Based on a preliminary assessment, the Company and its subsidiaries do not expect material change to the loss allowance for the Company and its subsidiaries' trade debtors and other debt investment held at amortised cost and net investment in finance lease.

• IFRS 9 does not fundamentally change the requirements relating to measuring and recognising ineffectiveness under IAS 39. However, greater flexibility has been introduced to the types of transactions eligible for hedge accounting. The Company and its subsidiaries have assessed that its current hedge relationships will qualify as continuing hedges upon the adoption of IFRS 9 and therefore it expects that the accounting for its hedging relationships will not be significantly impacted.

(ii) IFRS 15, Revenue from contracts with customers

IFRS 15 establishes a comprehensive framework for recognising revenue from contracts with customers. IFRS 15 will replace the existing revenue standards, IAS 18, Revenue, which covers revenue arising from sale of goods and rendering of services, and IAS 11, Construction contracts, which specifies the accounting for revenue from construction contracts. IFRS 15, deals with revenue recognition and establishes principles for reporting useful information to users of financial statements about the nature, amount, timing and uncertainty of revenue and cash flows arising from an entity's contracts with customers. IFRS 15 provides that an entity should recognise revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for the goods or services provided and establishes a five step model to be applied by an entity in evaluating its contracts with customers. Revenue is recognised when a customer obtains control of a good or service and thus has the ability to direct the use and obtain the benefits from the good or service. An entity should adopt IFRS 15 in transition using either modified retrospective approach or cumulative effect method.

During 2017, the Company substantially completed its assessment of the potential impact of the new standard, including performing a review of revenue streams and customer contracts in order to evaluate the effects that this standard may have on the consolidated statement of comprehensive income and consolidated statement of financial position. The Company and its subsidiaries' revenues are substantially generated from the sales of power heat and other goods. Effective 1 January 2018, the Company and its subsidiaries adopted IFRS 15 utilising the cumulative effect method, which results in the Company and its subsidiaries' retaining prior period comparative figures as reported under the previous standards and recognising the cumulative effect of applying IFRS 15 as an adjustment to the opening balance of retained earnings as at the date of initial adoption, and will provide additional disclosures comparing results to previous IFRS in its 2018 consolidated financial statements. The Company and its subsidiaries plan to apply the new revenue standard only to contracts not completed as of the date of initial application, referred to as open contracts. Since the number of open contracts at 31 December is limited, and more than 95% of the Company and its subsidiaries' revenue comprised of contracts with customers from rate-regulated sales of power and heat, where revenue will continue to be recognised upon transmission to the customers, the Company and its subsidiaries expects that the adoption of IFRS 15 will not have material impact on the consolidated financial statements.

(iii) IFRS 16, Lease

As disclosed in Note 2(y), currently the Company and its subsidiaries classify leases into finance leases and operating leases and account for the lease arrangements differently, depending on the classification of the lease. The Company and its subsidiaries enter into some leases as the lessor and others as the lessee.

IFRS 16 is not expected to impact significantly on the way that lessors account for their rights and obligations under a lease. However, once IFRS 16 is adopted, lessees will no longer distinguish between finance leases and operating leases. Instead, subject to practical expedients, lessees will account for all leases in a similar way to current finance lease accounting, i.e. at the commencement date of the lease the lessee will recognise and measure a lease liability at the present value of the minimum future lease payments and will recognise a corresponding "right-of-use" asset. After initial recognition of this asset and liability, the lessee will recognise interest expense accrued on the outstanding balance of the lease liability, and the depreciation of the right-of-use asset, instead of the current policy of recognising rental expenses incurred under operating leases on a systematic basis over the lease term. As a practical expedient, the lessee can elect not to apply this accounting model to short-term leases (i.e. where the lease term is 12 months or less) and to leases of low-value assets, in which case the rental expenses would continue to be recognised on a systematic basis over the lease term.

IFRS 16 will primarily affect the Company and its subsidiaries' accounting as a lessee of leases for properties, plant and equipment which are currently classified as operating leases. The application of the new accounting model is expected to lead to an increase in both assets and liabilities and to impact on the timing of the expense recognition in the statement of profit or loss over the period of the lease. As disclosed in Note 39(b), at 31 December 2017 the Company and its subsidiaries' future minimum lease payments under non-cancellable operating leases amount to RMB1,487 million for property, plant and equipment and land use rights, the majority of which is payable either between 1 and 5 years after the reporting date or in more than 5 years. Some of these amounts may therefore need to be recognised as lease liabilities, with corresponding right-of-use assets, once IFRS 16 is adopted. The Company and its subsidiaries will need to perform a more detailed analysis to determine the amounts of new assets and liabilities arising from operating lease commitments on adoption of IFRS 16, after taking into account the applicability of the practical expedient and adjusting for any leases entered into or terminated between now and the adoption of IFRS 16 and the effects of discounting.

There are no other amendments and new standards that are not yet effective that would be expected to have a material impact on the Company and its subsidiaries' consolidated financial statements.

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Principal accounting policies (Tables)

12 Months Ended

Dec. 31, 2017

Principal accounting policies [abstract]

Estimated useful lives of property plant and equipment

	Estimated useful lives
Dam	8 - 50 years
Port facilities	20 - 40 years
Buildings	8 - 30 years
Electric utility plant in service	5 - 30 years
Transportation facilities	8 - 27 years
Others	5 - 14 years

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Financial and capital risks management (Tables)

12 Months Ended

Dec. 31, 2017

Financial and capital risks management [abstract]

Assets and liabilities measured at fair value

The following table presents the assets and liabilities that are measured at fair value at 31 December 2017.

	Level 1		Level 2		Level 3		Total
Assets
Financial assets at fair value through profit or loss
- Trading derivatives (Note 14)		-		2,726		-		2,726
-Contingent consideration (Note 40)		-		-		859,547		859,547
Derivatives used for hedging (Note 14)		-		330,966		-		330,966
Available-for-sale financial assets- Equity securities (Note 10)		9,223		-		-		9,223
Total assets		9,223		333,692		859,547		1,202,462
Liabilities
Financial liabilities at fair value through profit or loss
- Trading derivatives (Note 14)		-		125		-		125
Derivatives used for hedging (Note 14)		-		210,539		-		210,539
Total liabilities		-		210,664		-		210,664

The following table presents the assets and liabilities that are measured at fair value at 31 December 2016.

	Level 1		Level 2		Level 3		Total
Assets
Financial assets at fair value through profit or loss - Trading derivatives (Note 14)		-		5,881		-		5,881
Derivatives used for hedging (Note 14)		-		372,442		-		372,442
Available-for-sale financial assets - Equity securities (Note 10)		1,820,713		-		-		1,820,713
Total assets		1,820,713		378,323		-		2,199,036
Liabilities
Financial liabilities at fair value through profit or loss
- Trading derivatives (Note 14)		-		619		-		619
Derivatives used for hedging (Note 14)		-		334,119		-		334,119
Total liabilities		-		334,738		-		334,738

Movements during the period in the balance of the Level 3 fair value measurements

	2017
Contingent consideration
Beginning of the year		-
Movement:
Gains on fair value changes		859,547
End of the year		859,547
Total gains for the period included in profit or loss for assets held at the end of the reporting period		859,547

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Revenue and segment information (Tables)

12 Months Ended

Dec. 31, 2017

Revenue and segment information [abstract]

Revenues recognized during the year

	For the year ended 31 December
	2017		2016		2015
Sales of power and heat		148,925,442		112,794,536		127,849,408
Sales of coal		1,143,299		2,909		6,839
Port service		232,360		237,347		211,685
Transportation service		73,830		105,505		104,721
Others		2,084,513		673,939		732,220
Total		152,459,444		113,814,236		128,904,873

Revenue information under PRC GAAP

	(Under PRC GAAP)
	PRC powersegment			Singaporesegment			All othersegments			Total
For the year ended 31 December 2017
Total revenue		142,067,629			10,078,031			694,405			152,840,065
Inter-segment revenue		-			-			(380,621	)		(380,621	)
Revenue from external customers		142,067,629			10,078,031			313,784			152,459,444
Segment results		2,417,073			(577,458	)		302,191			2,141,806
Interest income		126,927			70,756			1,223			198,906
Interest expense		(9,026,064	)		(450,928	)		(145,112	)		(9,622,104	)
Impairment loss		(1,167,751	)		(994	)		(19,742	)		(1,188,487	)
Depreciation and amortization		(18,081,299	)		(856,979	)		(189,764	)		(19,128,042	)
Net loss on disposal of non-current assets		(580,345	)		(995	)		(3	)		(581,343	)
Share of profits less losses of associates and joint ventures		(7,318	)		-			307,923			300,605
Income tax expense		(1,667,234	)		99,150			(5,386	)		(1,573,470	)

							(Under PRC GAAP)
	PRC power segment			Singaporesegment			All other segments			Total
For the year ended 31 December 2016 (Restated*)
Total revenue		129,101,375			8,758,822			634,965			138,495,162
Inter-segment revenue		-			-			(344,866	)		(344,866	)
Revenue from external customers		129,101,375			8,758,822			290,099			138,150,296
Segment results		17,633,734			(282,703	)		(38,433	)		17,312,598
Interest income		102,265			69,672			623			172,560
Interest expense		(7,952,640	)		(481,263	)		(137,825	)		(8,571,728	)
Impairment (loss)/reversal		(1,410,733	)		899			(8,475	)		(1,418,309	)
Depreciation and amortization		(17,320,753	)		(778,426	)		(203,493	)		(18,302,672	)
Net loss on disposal of non-current assets		(693,091	)		(172	)		(14,303	)		(707,566	)
Share of profits less losses of associates and joint ventures		973,982			-			73,415			1,047,397
Income tax expense		(4,610,591	)		44,135			57,489			(4,508,967	)
For the year ended 31 December 2015 (Restated*)
Total revenue		143,679,910			10,143,793			588,266			154,411,969
Inter-segment revenue		-			-			(266,701	)		(266,701	)
Revenue from external customers		143,679,910			10,143,793			321,565			154,145,268
Segment results		27,473,279			(313,253	)		(232,956	)		26,927,070
Interest income		115,378			66,898			501			182,777
Interest expense		(9,526,290	)		(452,034	)		(163,325	)		(10,141,649	)
Impairment (loss)/reversal		(3,112,370	)		1,744			(178,131	)		(3,288,757	)
Depreciation and amortization		(16,719,037	)		(772,003	)		(245,936	)		(17,736,976	)
Net (loss)/gain on disposal of non-current assets		(517,820	)		22,450			(1	)		(495,371	)
Share of profits less losses of associates and joint ventures		1,247,293			-			18,247			1,265,540
Income tax expense		(7,121,207	)		254,772			14,397			(6,852,038	)

Assets and liabilities information under PRC GAAP

				(Under PRC GAAP)
	PRC power segment			Singaporesegment			All other segments			Total
31 December 2017
Segment assets		334,379,104			27,817,680			9,978,885			372,175,669
Including:
Additions to non-current assets (excluding financial assets and deferred income tax assets)		24,447,658			260,240			328,061			25,035,959
Investments in associates		12,577,836			-			2,919,860			15,497,696
Investments in joint ventures		1,457,247			-			1,025,534			2,482,781
Segment liabilities		(264,115,887	)		(14,000,442	)		(3,026,229	)		(281,142,558	)
31 December 2016 (Restated*)
Segment assets		331,939,958			28,141,718			11,789,504			371,871,180
Including:
Additions to non-current assets (excluding financial assets and deferred income tax assets)		27,430,205			230,974			854,484			28,515,663
Investments in associates		12,527,711			-			2,880,368			15,408,079
Investments in joint ventures		2,202,002			-			790,610			2,992,612
Segment liabilities		(246,200,555	)		(14,027,606	)		(5,620,515	)		(265,848,676	)

Reconciliation of revenue from external customers to operating revenue

	For the year ended 31 December
	2017		2016(Restated*)			2015(Restated*)
Revenue from external customers
(PRC GAAP)		152,459,444		138,150,296			154,145,268
Reconciling item:
Impact of restatement under PRC GAAP in relation to business combination under common control*(Note 40)		-		(24,336,060	)		(25,240,395	)
Operating revenue per IFRS consolidated statement of comprehensive income		152,459,444		113,814,236			128,904,873

Reconciliation of segment result to profit before income tax expense

	For the year ended 31 December
	2017			2016(Restated*)			2015(Restated*)
Segment results (PRC GAAP)		2,141,806			17,312,598			26,927,070
Reconciling items:
Loss related to the headquarter		(170,210	)		(699,054	)		(327,262	)
Investment income from China Huaneng Finance Co., Ltd. ("Huaneng Finance")		143,794			132,018			135,971
Dividend income of available-for-sale financial assets		124,918			105,337			99,071
Gains on disposal of available-for-sale financial asset		1,479,732			932,738			4,282
Impact of restatement under PRC GAAP in relation to business combination under common control*(Note 40)		-			(3,417,300	)		(3,454,005	)
Impact of other IFRS adjustments**		(918,307	)		(553,199	)		(427,077	)
Profit before income tax expense per IFRS consolidated statement of comprehensive income		2,801,733			13,813,138			22,958,050

Reportable segments' assets reconciled to total assets

	As at 31 December
	2017		2016(Restated*)
Total segment assets (PRC GAAP)		372,175,669		371,871,180
Reconciling items:
Investment in Huaneng Finance		1,336,777		1,314,603
Deferred income tax assets		2,980,303		2,447,648
Prepaid income tax		150,838		204,182
Available-for-sale financial assets		1,654,993		3,560,928
Corporate assets		395,148		360,854
Impact of restatement under PRC GAAPin relation to business combinationunder common control * (Note 40)		-		(70,341,769	)
Impact of other IFRS adjustments**		17,895,783		5,422,113
Total assets per IFRS consolidated statement offinancial position		396,589,511		314,839,739

Reportable segments' liabilities reconciled to total liabilities

	As at 31 December
	2017			2016(Restated*)
Total segment liabilities (PRC GAAP)		(281,142,558	)		(265,848,676	)
Reconciling items:
Current income tax liabilities		(430,703	)		(572,515	)
Deferred income tax liabilities		(1,283,950	)		(1,429,859	)
Corporate liabilities		(3,632,847	)		(4,717,617	)
Impact of restatement under PRC GAAPin relation to business combinationunder common control * (Note 40)		-			59,917,072
Impact of other IFRS adjustments**		(2,484,849	)		(1,407	)
Total liabilities per IFRS consolidated statement of financial position		(288,974,907	)		(212,653,002	)

Other material items

	Reportable segment total			Headquarters			Investment income from Huaneng Finance		Impact of restatement under PRC GAAP in relation to business combination under common control			Impact of other IFRS adjustments**			Total
For the year ended 31 December 2017
Total revenue		152,459,444			-			-		-			-			152,459,444
Interest expense		(9,622,104	)		(126,900	)		-		-			-			(9,749,004	)
Depreciation and amortization		(19,128,042	)		(38,819	)		-		-			(1,468,972	)		(20,635,833	)
Impairment loss		(1,188,487	)		-			-		-			1,275			(1,187,212	)
Share of profits less losses of associates and joint ventures		300,605			-			143,794		-			(19,184	)		425,215
Net (loss)/gain on disposal of non-current assets		(581,343	)		3,174			-		-			(38,287	)		(616,456	)
Income tax expense		(1,573,470	)		-			-		-			355,944			(1,217,526	)
For the year ended 31 December 2016 (Restated*)
Total revenue		138,150,296			-			-		(24,336,060	)		-			113,814,236
Interest expense		(8,571,728	)		(131,244	)		-		1,885,446			-			(6,817,526	)
Depreciation and amortization		(18,302,672	)		(48,934	)		-		3,533,820			(344,929	)		(15,162,715	)
Impairment loss		(1,418,309	)		-			-		213,351			-			(1,204,958	)
Share of profits less losses of associates and joint ventures		1,047,397			-			132,018		133,694			(14,220	)		1,298,889
Net loss on disposal of non-current assets		(707,566	)		(14	)		-		115,769			1,762			(590,049	)
Income tax expense		(4,508,967	)		-			-		928,854			114,962			(3,465,151	)
For the year ended 31 December 2015 (Restated*)
Total Revenue		154,145,268			-			-		(25,240,395	)		-			128,904,873
Interest expense		(10,141,649	)		(149,259	)		-		2,345,174			-			(7,945,734	)
Depreciation and amortization		(17,736,976	)		(60,236	)		-		3,474,072			(394,473	)		(14,717,613	)
Impairment loss		(3,288,757	)		-			-		198,604			-			(3,090,153	)
Share of profits less losses of associates and joint ventures		1,265,540			-			135,971		180,447			(55,983	)		1,525,975
Net loss on disposal of non-current assets		(495,371	)		(6	)		-		90,534			(33,478	)		(438,321	)
Income tax expense		(6,852,038	)		-			-		1,016,588			136,507			(5,698,943	)

Countries that external revenue generated from

	For the year ended 31 December
	2017		2016		2015
PRC		142,381,413		105,055,414		118,761,080
Singapore		10,078,031		8,758,822		10,143,793
Total		152,459,444		113,814,236		128,904,873

Countries that non-current assets (excluding financial assets and deferred income tax assets) located

	As at 31 December
	2017		2016
PRC		319,534,533		249,155,921
Singapore		23,035,758		23,369,766
Total		342,570,291		272,525,687

Information on sales to major customers

	For the year ended 31 December
	2017					2016					2015
	Amount		Proportion			Amount		Proportion			Amount		Proportion
State Grid Shandong Electric Power Company		28,659,891		19	%		12,649,224		11	%		14,855,655		12	%

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Profit before income tax expense (Tables)

12 Months Ended

Dec. 31, 2017

Profit before income tax expense [abstract]

Profit before income tax expense

	For the year ended 31 December
	2017			2016			2015
Total interest expense on borrowing		10,225,069			7,267,490			8,716,074
Less: amounts capitalized in property, plant and equipment		476,065			449,964			770,340
Interest expenses charged in consolidated statement of comprehensive income		9,749,004			6,817,526			7,945,734
Auditors' remuneration-audit services		64,160			43,610			41,640
Operating leases charge		364,756			331,496			313,723
Fuel		92,737,304			56,617,542			59,242,367
Depreciation of property, plant and equipment		20,180,830			14,815,620			14,411,632
Amortization of land use rights		341,125			225,707			213,206
Amortization of other non-current assets		113,878			121,388			92,775
Impairment loss of property, plant and equipment (Note 7)		1,046,195			1,063,735			1,047,641
Impairment loss of land use rights (Note 11)		108,590			51,981			-
Impairment loss of investment in an associate		-			-			178,131
Impairment loss of mining rights		-			-			760,296
Impairment loss of goodwill		-			-			1,105,649
Impairment loss of other non-current assets		5,008			-			-
Recognition/(reversal) of provision for
doubtful accounts		27,682			89,498			(3,392	)
(Reversal)/recognition of provision for inventory obsolescence		(263	)		(256	)		1,828
Net loss on disposals of non-current assets		616,456			590,049			438,321
Government grants		(421,912	)		(396,467	)		(696,735	)
Gain on a bargain purchase		-			(129,921	)		-
Included in other investment income
-Gains on disposal of available-for-sale financial asset (Note 10)		(1,479,732	)		(932,738	)		-
-Dividends on available-for-sale financial assets		(124,918	)		(103,037	)		(97,696	)
-Gains on disposal of subsidiaries*		(52,330	)		-			-
Included in (gain)/loss on fair value changes of financial assets/liabilities
-Contingent consideration of the business combination (Note 40)		(859,547	)		-			-
-Loss on fair value changes of trading derivatives		2,761			12,986			16,762

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Property, plant and equipment (Tables)

12 Months Ended

Dec. 31, 2017

Property, plant and equipment [abstract]

Detailed information about property, plant and equipment

	Dam			Port facilities			Buildings			Electric utility plant in service			Transport-ation facilities			Others			CIP			Total
As at 1 January 2016
Cost		1,856,144			3,860,009			8,306,471			327,827,738			980,290			5,809,400			23,851,697			372,491,749
Accumulated depreciation		(153,325	)		(436,215	)		(2,508,772	)		(138,852,591	)		(371,226	)		(3,366,838	)		-			(145,688,967	)
Accumulated impairment loss		(268,981	)		-			(68,931	)		(5,968,962	)		-			(81,328	)		(741,510	)		(7,129,712	)
Net book value		1,433,838			3,423,794			5,728,768			183,006,185			609,064			2,361,234			23,110,187			219,673,070
Year ended 31 December 2016
Beginning of the year		1,433,838			3,423,794			5,728,768			183,006,185			609,064			2,361,234			23,110,187			219,673,070
Reclassification		-			1,771			(492,558	)		495,841			759			(5,813	)		-			-
Business combination		-			-			8,098			303,854			-			2,977			4,576			319,505
Additions		-			1,770			127			418,812			-			122,519			18,839,102			19,382,330
Transfer from CIP		20,170			246,712			1,319,019			12,576,736			20,033			296,648			(14,479,318	)		-
Disposals/write-off		-			-			(68,945	)		(495,251	)		(26,477	)		(27,055	)		(193,357	)		(811,085	)
Depreciation charge		(32,987	)		(113,810	)		(255,882	)		(14,004,881	)		(48,720	)		(387,884	)		-			(14,844,164	)
Impairment charge		(41,423	)		-			(2,303	)		(1,005,367	)		-			(6,399	)		(8,243	)		(1,063,735	)
Currency translation differences		-			-			-			404,948			-			782			158			405,888
End of the year		1,379,598			3,560,237			6,236,324			181,700,877			554,659			2,357,009			27,273,105			223,061,809
As at 31 December 2016
Cost		1,876,314			4,116,914			9,056,858			341,195,395			875,630			6,041,783			28,022,858			391,185,752
Accumulated depreciation		(186,312	)		(556,677	)		(2,749,300	)		(152,408,524	)		(320,971	)		(3,596,546	)		-			(159,818,330	)
Accumulated impairment loss		(310,404	)		-			(71,234	)		(7,085,994	)		-			(88,228	)		(749,753	)		(8,305,613	)
Net book value		1,379,598			3,560,237			6,236,324			181,700,877			554,659			2,357,009			27,273,105			223,061,809
Year ended 31 December 2017
Beginning of the year		1,379,598			3,560,237			6,236,324			181,700,877			554,659			2,357,009			27,273,105			223,061,809
Reclassification		49,386			(404	)		52,047			(157,759	)		(4,357	)		61,087			-			-
Business combination (Note 40)		279,169			-			1,944,531			58,379,270			17,243			443,052			2,717,544			63,780,809
Additions		-			-			184			840,991			-			88,160			21,225,980			22,155,315
Transfer from CIP		15,355			114,688			342,285			20,283,508			288,554			145,705			(21,190,095	)		-
Disposals/write-off		-			(14,731	)		(30,837	)		(1,252,829	)		(3,907	)		(28,562	)		-			(1,330,866	)
Disposal of subsidiaries		-			(632,709	)		(101,169	)		(114,542	)		-			(153,096	)		(1,242,210	)		(2,243,726	)
Depreciation charge		(40,200	)		(111,529	)		(339,630	)		(19,155,852	)		(59,022	)		(494,932	)		-			(20,201,165	)
Impairment charge		(45,619	)		-			(1,651	)		(754,753	)		-			(2,503	)		(241,669	)		(1,046,195	)
Currency translation differences		-			-			-			151,249			-			263			600			152,112
End of the year		1,637,689			2,915,552			8,102,084			239,920,160			793,170			2,416,183			28,543,255			284,328,093
As at 31 December 2017
Cost		2,220,224			3,358,811			11,173,669			418,360,698			1,155,392			5,972,688			29,534,677			471,776,159
Accumulated depreciation		(226,512	)		(443,259	)		(3,019,198	)		(170,525,898	)		(362,222	)		(3,523,292	)		-			(178,100,381	)
Accumulated impairment loss		(356,023	)		-			(52,387	)		(7,914,640	)		-			(33,213	)		(991,422	)		(9,347,685	)
Net book value		1,637,689			2,915,552			8,102,084			239,920,160			793,170			2,416,183			28,543,255			284,328,093

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Investments in associates and joint ventures (Tables)

12 Months Ended

Dec. 31, 2017

Investments in associates and joint ventures [abstract]

Summary of investments in associates and joint ventures

	2017			2016
Beginning of the year		19,632,113			19,745,192
Capital injections in associates and joint ventures		301,916			276,118
Business combination (Note 40(a))		1,021,566			-
Transfer from available-for-sale		91,800			-
Transfer to subsidiaries		(736,725	)		-
Share of net profit less loss		425,215			1,298,889
Share of other comprehensive income/(loss)		121,208			(180,572	)
Currency translation differences		(142,226	)		-
Dividends		(835,279	)		(1,507,514	)
Elimination of unrealized profits on transactions with equity-method investees		(361,965	)		-
End of the year		19,517,623			19,632,113

Basic information of material associates and joint ventures

Name	Country of incorporation	Registered capital	Business nature and scope of operation	Percentage of equity interest held
				Direct	Indirect1
Associates:
SECL*	PRC	RMB2,642,994,398	Energy and investment in related industries	25.02%	-
Hebei Hanfeng Power Generation Limited Liability Company ("Hanfeng Power")	PRC	RMB1,975,000,000	Power generation	40%	-
Huaneng Finance	PRC	RMB5,000,000,000	Provision for financial service including fund deposit services, lending, finance lease arrangements, notes discounting and entrusted loans and investment arrangement within Huaneng Group	20%	-
Huaneng Sichuan Hydropower Co., Ltd. ("Sichuan Hydropower")	PRC	RMB1,469,800,000	Development, investment, construction, operation and management of hydropower	49%	-
China Huaneng Group Fuel Co., Ltd. ("Huaneng Group Fuel Company") **	PRC	RMB3,000,000,000	Wholesale of coal, import and export of coal	50%	-
Hainan Nuclear Power Limited Liability Company("Hainan Nuclear")	PRC	RMB4,831,460,000	Construction and operation of nuclear power plants; production and sales of electricity and related products	30%	-
Joint ventures:
Shanghai Time Shipping Co., Ltd. ("Shanghai Time Shipping")	PRC	RMB1,200,000,000	International and domestic sea transportation	50%	-
Jiangsu Nantong Power Generation Co., Ltd.("Jiangsu Nantong Power")	PRC	RMB1,596,000,000	Operation and Management of power generation plants and transportation related projects	-	35%
Huaneng Shandong Ruyi (Hongkong) Energy Co., Ltd ("Ruyi (Hongkong) Energy")***	Hong Kong	10,000 Shares	Investment in electricity and other related energy projects	-	40%
Shandong Luyi Power International Limited Company ("Luyi Power")***	PRC	RMB35,000,000	Contracting overseas projects and international bidding projects, mechanical and electrical equipment installation engineering and electric power engineering	-	40%

Summarized financial information of the material associates

	Sichuan Hydropower						SECL						Huaneng Finance						Hanfeng Power						Huaneng GroupFuel Company						Hainan Nuclear
	2017			2016			2017			2016			2017			2016			2017			2016			2017			2016			2017			2016
Gross amounts of the associates'
Current assets		1,113,579			1,245,157			16,444,934			14,021,440			25,535,504			13,919,342			650,055			806,432			4,327,146			4,642,797			2,497,765			2,608,909
Non-current assets		14,590,921			14,676,021			56,079,321			46,584,060			20,786,497			18,055,386			2,246,412			2,616,639			4,102,426			4,269,520			22,490,989			23,939,921
Current liabilities		(2,477,362	)		(2,410,462	)		(20,447,190	)		(16,564,310	)		(39,588,213	)		(25,344,346	)		(795,815	)		(1,045,876	)		(1,778,075	)		(1,939,210	)		(3,409,360	)		(3,330,581	)
Non-current liabilities		(8,661,852	)		(8,901,599	)		(28,491,540	)		(19,395,060	)		(49,904	)		(57,368	)		(27,443	)		(37,103	)		(3,119,462	)		(3,432,326	)		(17,252,794	)		(18,356,288	)
Equity		4,565,286			4,609,117			23,585,525			24,646,130			6,683,884			6,573,014			2,073,209			2,340,092			3,532,035			3,540,781			4,326,600			4,861,961
-Equity attributable to shareholders		3,400,953			3,449,824			22,285,077			21,610,140			6,683,884			6,573,014			2,073,209			2,340,092			3,400,344			3,378,952			4,326,600			4,861,961
-Non-controlling interests		1,164,333			1,159,293			1,300,448			3,035,990			-			-			-			-			131,691			161,829			-			-
Revenue		2,247,781			2,053,327			13,908,949			11,427,830			1,393,211			1,093,637			2,073,209			2,192,445			17,166,036			14,356,915			2,504,379			1,897,190
Profit/(loss) from continuing operations attributable to shareholders		222,403			173,220			747,657			1,362,028			718,970			660,089			52,361			290,470			48,876			102,363			(535,361	)		18,618
Other comprehensive (loss)/income attributable to shareholders		-			-			521,965			(638,680	)		(28,099	)		(125,840	)		-			-			(6,654	)		8,723			-			-
Total comprehensive income/(loss) attributable to shareholders		222,403			173,220			1,269,622			723,348			690,871			534,249			52,361			290,470			42,222			111,086			(535,361	)		18,618
Dividend received from the associates		132,923			145,392			148,761			198,348			116,000			122,000			127,698			174,366			10,000			10,000			-			-
Reconciled to the interests in the associates
Gross amounts of net assets attributable to shareholders of the associate		3,400,953			3,449,824			22,285,077			21,610,140			6,683,884			6,573,014			2,073,209			2,340,092			3,400,344			3,378,952			4,326,600			4,861,961
The Company's effective interest		49	%		49	%		25.02	%		25.02	%		20	%		20	%		40	%		40	%		50	%		50	%		30	%		30	%
The Company's share of net assets attributable to shareholders of the associate		1,666,467			1,690,414			5,574,612			5,405,776			1,336,777			1,314,603			829,284			936,037			1,700,172			1,689,476			1,297,980			1,458,588
Impact of adjustments		207,586			207,586			1,161,810			1,161,810			-			-			293,082			293,082			16,521			16,521			14,076			14,076
Carrying amount in the consolidated financial statements		1,874,053			1,898,000			6,736,422			6,567,586			1,336,777			1,314,603			1,122,366			1,229,119			1,716,693			1,705,997			1,312,056			1,472,664

Summarized financial information of material joint ventures

	Shanghai Time Shipping						Jiangsu Nantong Power						Pakistan Sahiwal Project Related Investment
	2017			2016			2017			2016			2017
Gross amounts of joint ventures'
Current assets		665,410			883,120			656,720			815,359			3,069,065
Non-current assets		4,663,530			5,335,409			5,739,860			6,075,100			9,775,693
Current liabilities		(3,316,709	)		(3,177,881	)		(2,939,371	)		(2,600,258	)		(1,955,211	)
Non-current liabilities		(617,437	)		(1,506,076	)		(1,374,656	)		(1,931,219	)		(8,738,121	)
Equity		1,394,794			1,534,572			2,082,553			2,358,982			2,151,426
Included in the above assets and liabilities:
Cash and cash equivalents		96,528			203,018			362,214			96,501			618,105
Current financial liabilities (excluding trade and other payables and provisions)		(2,987,937	)		(2,681,857	)		(2,404,331	)		(2,270,601	)		(1,482,269	)
Non-current financial liabilities (excluding trade and other payables and provisions)		(617,437	)		(1,506,076	)		(1,352,000	)		(1,931,219	)		(8,738,121	)
Revenue		3,532,065			3,561,091			3,451,983			3,354,545			2,321,510
(Loss)/profit from continuing operations		(139,780	)		1,212			271,364			608,660			(72,227	)
Other comprehensive loss		-			-			-			-			(284,452	)
Total comprehensive (loss)/income		(139,780	)		1,212			271,364			608,660			(356,679	)
Dividend received in cash from the joint ventures		-			275,000			724,453			-			-
Included in the above profit:
Depreciation and amortization		317,133			340,826			396,500			393,221			63,122
Interest income		1,406			985			1,810			2,313			10
Interest expense		157,851			149,748			130,028			128,224			104,467
Income tax expense		(45,741	)		500			92,294			194,915			224,146
Reconciled to the interest in the joint venture:
Gross amounts of net assets		1,394,794			1,534,572			2,082,553			2,358,982			2,151,426
The Company and its subsidiaries' effective interest		50	%		50	%		50	%		50	%		50	%
The Company and its subsidiaries' share of net assets		697,397			767,286			1,041,277			1,179,491			1,075,713
Impact of adjustments		18,324			18,324			-			-			(361,965	)
Carrying amount in the consolidated financial statements		715,721			785,610			1,041,277			1,179,491			713,748

Aggregated information of individually immaterial associates and joint ventures

	2017		2016
Aggregate carrying amount of individually immaterial associates and joint ventures in the consolidated financial statements		2,948,510		3,479,043
Aggregate amounts of the Company and its subsidiaries' share of those associates and joint ventures Profit from continuing operations		70,965		263,392
Total comprehensive income		70,965		263,392

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Investments in subsidiaries (Tables)

12 Months Ended

Dec. 31, 2017

Investments in subsidiaries [abstract]

Subsidiaries acquired through establishment or investment

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting
Huaneng International Power Fuel Limited Liability Company	PRC	held directly	RMB 200,000,000	Wholesale of coal	100%	100%
Huaneng Shanghai Shidongkou Power Generation Limited Liability Company ("Shidongkou Power")(i)	PRC	held directly	RMB 1,179,000,000	Power generation	50%	100%
Huaneng Nantong Power Generation Limited Liability Company	PRC	held directly	RMB 798,000,000	Power generation	70%	70%
Huaneng Yingkou Co-generation Limited Liability Company	PRC	held directly	RMB 844,030,000	Production and sales of electricity and heat sale of coal ash and lime	100%	100%
Huaneng Hunan Xiangqi Hydropower Co., Ltd.	PRC	held directly	RMB 328,000,000	Construction, operation and management of hydropower plants and related projects	100%	100%
Huaneng Zuoquan Coal-fired Power Generation Limited Liability Company	PRC	held directly	RMB 960,000,000	Construction, operation and management of electricity projects; Development and utilization of clean energy resources	80%	80%
Huaneng Kangbao Wind Power Utilization Limited Liability Company	PRC	held directly	RMB 407,200,000	Construction, operation and management of wind power plants and related projects; solar power generation	100%	100%
Huaneng Jiuquan Wind Power Generation Co., Ltd.	PRC	held directly	RMB 2,600,000,000	Construction, operation and management of wind power generation and related projects	100%	100%
Huaneng Jiuquan II Wind Power Generation Co., Ltd.	PRC	held directly	RMB 10,000,000	Construction, operation and management of wind power generation and related projects	100%	100%
Huaneng Wafangdian Wind Power Generation Co., Ltd.	PRC	held directly	RMB 50,000,000	Construction, operation and management of wind power generation and related projects	100%	100%
Huaneng Changtu Wind Power Generation Co., Ltd.	PRC	held directly	RMB 50,000,000	Construction, operation and management of wind power generation and related projects	100%	100%
Huaneng Rudong Wind Power Generation Co., Ltd.	PRC	held directly	RMB 90,380,000	Operation, management of wind power generation projects	90%	90%
Huaneng Guangdong Haimen Port Limited Liability Company	PRC	held directly	RMB 331,400,000	Loading, warehousing and conveying services, providing facility services and water transportation services	100%	100%
Huaneng Taicang Port Limited Liability Company	PRC	held directly	RMB 600,000,000	Port provision, cargo loading and storage	85%	85%

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng Taicang Power Generation Co., Ltd.	PRC	held directly	RMB 804,146,700	Power generation	75%	75%
Huaneng Huaiyin II Power Generation Limited Company	PRC	held directly	RMB 930,870,000	Power generation	63.64%	63.64%
Huaneng Xindian Power Generation Co., Ltd.	PRC	held directly	RMB 465,600,000	Power generation	95%	95%
Huaneng Shanghai Combined Cycle Power Limited Liability Company	PRC	held directly	RMB 699,700,000	Power generation	70%	70%
Huaneng Yumen Wind Power Generation Co., Ltd.	PRC	held directly	RMB 719,170,000	Construction, operation and management of wind power generation and related projects	100%	100%
Huaneng Qingdao Co-generation Limited Company	PRC	held directly	RMB 214,879,000	Construction, operation and management of co-generation power plants and related projects	100%	100%
Huaneng Tongxiang Combined Cycle Co-generation Co., Ltd.	PRC	held directly	RMB 300,000,000	Production and sales of electricity and heat; investment in combined cycle co-generation industries	95%	95%
Huaneng Eastern Yunnan Energy Mine Construction Co., Ltd.	PRC	held indirectly	RMB 10,000,000	Mine engineering, construction engineering, equipment installation engineering	100%	100%
Huaneng Nanjing Combined Cycle Co-generation Co., Ltd.	PRC	held directly	RMB 582,000,000	Construction, operation and management of power plants and related projects	60%	60%
Huaneng Shantou Haimen Power Generation Limited Liability Company	PRC	held directly	RMB 1,508,000,000	Construction, operation and management of power plants and related projects	80%	80%
Huaneng Chongqing Liangjiang Power Generation Limited Liability Company("Liangjiang Power")	PRC	held directly	RMB 726,600,000	Construction, operation and management of natural gas power plants and related projects	90%	90%
Chongqing Huaqing Energy Co., Ltd. ("Huaqing Energy") (ii)	PRC	held indirectly	RMB 44,420,000	Providing thermal energy and cold energy services; supplying electricity	54%	60%
Huaneng Yunnan Fuyuan Wind Power Generation Co., Ltd.	PRC	held directly	RMB 157,290,000	Wind power project investment, management and sales	100%	100%
Huaneng Guizhou Panxian Wind Power Generation Co., Ltd.	PRC	held directly	RMB 86,500,000	Construction and management of wind power plants and related projects	100%	100%
Huaneng Jiangxi Clean Energy Limited Liability Company	PRC	held directly	RMB 5,000,000	Power generation and supply, development, management and construction of clean energy projects	100%	100%

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng Suzhou Combined Cycle Co-generation Co., Ltd. ("Suzhou Combined Cycle Co-generation") (ix)	PRC	held indirectly	RMB 310,000,000	Construction and management of natural gas power plant and related projects	53.45%	100%
Huaneng Hunan Subaoding Wind Power Generation Co., Ltd.	PRC	held directly	RMB 266,000,000	Construction, operation and management of wind power plants and related projects	100%	100%
Huaneng Suixian Jieshan Wind Power Generation Co., Ltd.	PRC	held directly	RMB 96,500,000	Construction, operation and management of wind power plants and related projects	100%	100%
Huaneng Taiyuan Dongshan Combined Cycle Co-generation Co., Ltd.	PRC	held directly	RMB 600,000,000	Construction and operation of thermal heating network, development and utilization of clean energy resources	100%	100%
Huaneng Xuzhou Tongshan Wind Power Generation Co., Ltd.	PRC	held directly	RMB 2,644,560,000	Wind power generation, electricity engineering design services, maintenance of power supply and control facilities, solar energy power generation	70%	70%
Huaneng Nanjing Co-generation Co., Ltd.	PRC	held directly	RMB 300,000,000	Construction and operation of power plants, thermal heating services	70%	70%
Huaneng Hunan Guidong Wind Power Generation Co., Ltd.	PRC	held directly	RMB 140,000,000	Investment, construction, operation and management of electricity projects; development and utilization of clean energy resources	100%	100%
Huaneng Nanjing Luhe Wind Power Generation Co., Ltd.	PRC	held directly	RMB 63,800,000	Investment, construction, operation, management of electricity projects; development and utilization clean energy resources	100%	100%
Huaneng Luoyuan Power Generation Limited Liability Company	PRC	held directly	RMB 1,000,000,000	Construction, operation and management of power plants and related projects	100%	100%
Huaneng Lingang (Tianjin) Gas Co-generation Co., Ltd.	PRC	held directly	RMB 180,000,000	Providing generation and supply	100%	100%
Huaneng Lingang (Tianjin) Heat Co-generation Co., Ltd.	PRC	held indirectly	RMB 5,000,000	Providing thermal energy and cold energy services, supplying steam and hot water (except portable water), plumbing pipe installation and repair, energy engineering construction	66%	66%
Huaneng Anhui Huaining Wind Power Generation Co., Ltd.	PRC	held directly	RMB 122,000,000	Investment, construction and operation of electricity projects, development and utilization of clean energy resources	100%	100%

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng Mianchi Co-generation Limited Liability Company	PRC	held directly	RMB 570,000,000	Construction, operation and management of coal-fired plants and related projects	60%	60%
Huaneng Yingkou Xianrendao Co-generation Co., Ltd.	PRC	held directly	RMB 277,690,000	Power generation and supply, development and utilization of clean energy resources	100%	100%
Huaneng Nanjing Xingang Comprehensive Energy Co., Ltd.	PRC	held directly	RMB 10,000,000	Thermal generation and supply, power distribution and sales	65%	65%
Huaneng Changxing Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 16,000,000	Construction and operation of distributed photovoltaic power generation plants and related projects	100%	100%
Huaneng Rudong Baxianjiao Offshore Wind Power Generation Co., Ltd.	PRC	held directly	RMB 610,000,000	Infrastructure construction of wind power plants	70%	70%
Huaneng Guilin Gas Distributed Energy Co., Ltd.	PRC	held directly	RMB 267,450,000	Construction, operation and management of power plants thermal management and related projects	80%	80%
Huaneng (Dalian) Co-generation Co., Ltd.	PRC	held directly	RMB 12,500,000	Construction, operation and management of co-generation power plants and related projects	100%	100%
Huaneng Zhongxiang Wind Power Generation Co., Ltd.	PRC	held directly	RMB 10,000,000	Construction, operation and management of wind power plants and related projects	100%	100%
Huaneng Guanyun Co-generation Co., Ltd.	PRC	held directly	RMB 15,000,000	Construction, operation and management of co-generation power plants, heating network and expansion engineering	100%	100%
Huaneng International Power Hongkong Limited Company	HongKong	held directly	100,000 Shares	Development, construction management and operation of power supply, coal projects; related investment and financing businesses	100%	100%
Tuas Power Generation Pte. Ltd. ("TPG")	Singapore	held indirectly	S$ 1,183,000,001	Power generation and related by-products, derivatives, developing power supply resources, operating electricity and power sales	100%	100%
TP Utilities Pte. Ltd.	Singapore	held indirectly	S$ 255,500,001	Provision of energy, power supply, thermal supply, management of industrial water and waste	100%	100%

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

TP-STM Water Resources Pte. Ltd.	Singapore	held indirectly	S$ 4,500,000	Providing desalinated water	60%	60%
Huaneng Shanxi Taihang Power Generation Limited Liability Company	PRC	held directly	RMB 1,086,440,000	Pre-services related to coal-fired generation	60%	60%
Huaneng Mianchi Clean Energy Limited Liability Company	PRC	held directly	RMB 10,000,000	Wind Power generation, new energy development and utilization	100%	100%
Huaneng Zhuolu Clean Energy Limited Liability Company	PRC	held directly	RMB 78,878,100	Construction, operation and management of power plants and related projects	100%	100%
Huaneng Tongwei Wind Power Generation Limited Liability Company	PRC	held directly	RMB 248,000,000	Construction, operation and management of wind power plants and related projects	100%	100%
Huaneng Yizheng Wind Power Generation Limited Liability Company	PRC	held directly	RMB 200,000,000	Wind power plants design, construction, management and maintenance	100%	100%
Huaneng Yancheng Dafeng New Energy Power Generation Limited Liability Company	PRC	held directly	RMB 5,000,000	Construction, operation and management of wind power, photovoltaic power plant	100%	100%
Huaneng Shanyin Power Generation Limited Liability Company	PRC	held directly	RMB 1,573,000,000	Construction, operation and management of power plants and related projects	51%	51%
Huaneng Jiangsu Energy Sales Limited Liability Company	PRC	held directly	RMB 200,000,000	Purchase and sales of electricity and thermal energy, water supply services, construction and operation of electricity distribution network and heating pipe network	100%	100%
Huaneng Liaoning Energy Sales Limited Liability Company	PRC	held directly	RMB 200,000,000	Sales of electricity, thermal energy and circulating hot water	100%	100%
Huaneng Guangdong Energy Sales Limited Liability Company	PRC	held directly	RMB 200,000,000	Power and thermal energy supply, energy conservation technology service, transmission and substation projects contracting	100%	100%
Huaneng Suizhou Power Generation Limited Liability Company	PRC	held directly	RMB 50,000,000	Construction, operation and management of power plants, production and sales of electricity and heating	100%	100%
Huaneng Changle Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 10,000,000	Construction, operation and management of photovoltaic power plants and related projects	100%	100%
Huaneng Longyan Wind Power Generation Limited Liability Company	PRC	held directly	RMB 10,000,000	Construction, operation and management of wind power plants and related projects	100%	100%

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng Yunnan Malong Wind Power Generation Limited Liability Company	PRC	held directly	RMB 10,000,000	Construction, operation and management of wind power plants and related projects	100%	100%
Huaneng Dandong Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 17,720,000	Investment, construction operation and management of electricity projects, development and utilization of clean energy resources	100%	100%
Huaneng Dongguan Combined Cycle Co-generation Limited Liability Company	PRC	held directly	RMB 50,000,000	Investment of electricity projects, thermal power generation and supply, investment in heating pipe network, development and utilization of clean energy resources	100%	100%
Huaneng Yangxi Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 62,500,000	Photovoltaic electric power production and sales	80%	80%
Huaneng Chongqing Fengjie Wind Power Generation Limited Liability Company	PRC	held directly	RMB 10,000,000	Electricity production and supply; development and utilization of clean energy resources	100%	100%
Huaneng Changxing Hongqiao Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 10,000,000	Electricity production and supply; development and utilization of clean energy resources	100%	100%
Huaneng Jingxing Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 100,000	Investment, construction and management of photovoltaic power plants	100%	100%
Huaneng Shanxi Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Electricity supply and sales, investment, construction, operation and repair of regional transmission and distribution network	100%	100%
Huaneng Chongqing Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Operation of natural gas, electric energy and thermal energy products sales	100%	100%
Huaneng Chongqing Luohuang Energy Sales Limited Liability Company	PRC	held indirectly	RMB 210,000,000	Sales and supply of electricity, sales of thermal products	90%	90%
Huaneng Chongqing Tongliang Energy Sales Limited Liability Company	PRC	held indirectly	RMB 210,000,000	Operation of natural gas, sales of electricity supply, sales of thermal products	51%	51%
Huaneng Hunan Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Electricity and thermal energy products sales	100%	100%
Huaneng Jiangxi Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Construction, operation and management of heating and power supply facilities	100%	100%

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng Hebei Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Construction, installation, maintenance and repair of heating and power supply facilities	100%	100%
Huaneng Henan Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Sales of electricity, heating, gas and other energy products	100%	100%
Huaneng Handan Heating Limited Liability Company	PRC	held directly	RMB 100,000,000	Construction, operation and maintenance of heating sources and pipe network	100%	100%
Huaneng (Huzhou Development Zone) Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 10,000,000	Photovoltaic power generation; power supply, purchase and sales	100%	100%
Huaneng Fujian Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Sales of electricity, heating, gas and other energy products	100%	100%
Huaneng Hubei Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Sales of electricity, heating, gas and other energy products	100%	100%
Huaneng (Sanming) Clean Energy Limited Liability Company	PRC	held directly	RMB 500,000	Construction, operation and management of wind power, photovoltaic power station and related projects	100%	100%
Huaneng Yueyang Xingang Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 16,000,000	Construction, operation and management of electricity projects, development and utilization of clean energy	60%	60%
Huaneng Shanghai Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Power supply (except construction and operation of electricity network), technology services in energy conservation and environmental protection	100%	100%
Huaneng Yushe Photovoltaic Power Generation Limited Liability Company	PRC	held directly	RMB 10,000,000	Production and supply of electric power	100%	100%
Huaneng Anhui Energy Sales Limited Liability Company	PRC	held directly	RMB 210,000,000	Sales of electricity, heating gas and other energy products	100%	100%
Huaneng (Shanghai) Power Maintenance Limited Liability Company	PRC	held directly	RMB 200,000,000	Contracting installation and repair of electricity facilities	100%	100%
Huaneng Guanyun Clean Energy Power Limited Liability Company *	PRC	held directly	RMB 26,000,000	Sales of electricity	100%	100%

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng Jianchang Photovoltaic Power Generation Limited Liability Company*	PRC	held directly	RMB 10,000,000	Production and supply of electricity, development and utilization of clean energy resources	100%	100%
Huaneng Chaoyang Photovoltaic Power Generation Limited Liability Company*	PRC	held directly	RMB 10,000,000	Production and supply of electricity, development and utilization of clean energy resources	100%	100%
Huaneng (Luoyuan) Port Limited Company (x) *	PRC	held directly	RMB 169,710,000	Port management, investment and development	100%	100%
Huaneng Shijiazhuang Energy Limited Liability Company *	PRC	held directly	RMB 60,000,000	Production and supply of heating, purchase and sales of electricity	66.60%	66.60%
Huaneng Jiangyin Combined Cycle Co-generation Limited Liability Company*	PRC	held directly	RMB 600,000,000	Production and supply of electricity, production and supply of heating	51%	51%
Huaneng Anyang Energy Limited Liability Company *	PRC	held directly	RMB 10,000,000	Production and supply of electricity, production and supply of heating	100%	100%
Huaneng Shanxi Comprehensive Energy Limited Liability Company *	PRC	held directly	RMB 120,000,000	Production and supply of electricity, production and supply of heating	100%	100%
Huaneng Zhanhua Photovoltaic Power Generation Limited Company ("Zhanhua Photovoltaic Company") (vi)*	PRC	held indirectly	RMB 145,790,000	Photovoltaic power generation	46.40%	58%
Huaneng Weishan New Energy Limited Company ("Weishan New Energy") (vi)*	PRC	held indirectly	RMB 167,000,000	Investment, production and sales of new energy power generation projects	40%	100%
Huaneng Ruyi (Helan) New Energy Limited Company ("Helan New Energy") (vi)*	PRC	held indirectly	RMB 19,000,000	Photovoltaic power generation	40%	100%
Huaneng Dezhou New Energy Limited Company (vi)*	PRC	held indirectly	RMB 2,500,000	Photovoltaic power generation, wind power generation, biomass power generation	80%	100%
Zhaodong Huaneng Dechang Solar Power Generation Limited Company*	PRC	held indirectly	RMB 30,810,000	Solar energy generation and technology promotion, repair electricity facilities	100%	100%
Daqing Huaneng Shuangyu Solar Power Generation Limited Company*	PRC	held indirectly	RMB 20,000,000	Solar energy generation	100%	100%
Huaneng Taizhouwan Juji District Photovoltaic Power Generation Limited Liability Company*	PRC	held directly	RMB 100,000	Production and supply of electricity projects	100%	100%

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng Mingguang Wind Power Generation Limited Liability Company*	PRC	held directly	RMB 10,000,000	Production and supply of electricity; investment,construction, operation and management of electricity projects	100%	100%
Huaneng Guangxi Energy Sales Limited Liability Company*	PRC	held directly	RMB 210,000,000	Power supply, contracting installation and repair of electricity facilities	100%	100%
Huaneng Ruzhou Clean Energy Limited Liability Company*	PRC	held directly	RMB 80,000,000	Production and supply of electricity projects, investment, construction and operation of electricity projects	95%	95%
Huaneng Hunan Lianping Wind Power Generation Limited Liability Company*	PRC	held directly	RMB 173,920,000	Production and supply of electricity	80%	80%
Huaneng Abagaqi Clean Energy Limited Liability Company*	PRC	held directly	RMB 100,000	Production, supply and sales of electricity and thermal energy	100%	100%
Huaneng Jiashan Photovoltaic Power Generation Limited Liability Company*	PRC	held directly	RMB 10,000,000	Production and supply of electricity	100%	100%
Huaneng Zhejiang Energy Sales Limited Liability Company*	PRC	held directly	RMB 210,000,000	New energy technology development, technology consulting, transferring of results	100%	100%
Huaneng Guangdong Shantou Power Generation Limited Liability Company*	PRC	held directly	RMB 10,000,000	Production and supply of electricity and thermal energy	100%	100%
Huaneng Shantou Photovoltaic Power Generation Limited Liability Company*	PRC	held directly	RMB 100,000	Production and supply of electricity	100%	100%
Huaneng Guigang Clean Energy Limited Liability Company*	PRC	held directly	RMB 10,000,000	Production and supply of electricity, investment, construction and operation of electricity projects	100%	100%
Huaneng Changxing Jiapu Photovoltaic Power Generation Limited Liability Company*	PRC	held directly	RMB 10,000,000	Production and supply of electricity, investment in electricity projects	100%	100%
Huaneng Hainan Energy Sales Limited Liability Company*	PRC	held indirectly	RMB 210,000,000	Construction and operation of heat and power supply facilities, operation of heat resources, heat network and power supply facilities	91.80%	91.80%
Huaneng Yangpu Co-generation Limited Company*	PRC	held indirectly	RMB 802,222,000	Investment, construction operation and management of electricity projects and heat pipe network	82.62%	82.62%

Subsidiaries acquired from business combinations under common control

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Huaneng (Suzhou Industrial Park) Power Generation Co., Ltd	PRC	held directly	RMB 632,840,000	Power generation	75%	75%
Huaneng Qinbei Power Generation Co., Ltd. ("Qinbei Power")	PRC	held directly	RMB 1,540,000,000	Power generation	60%	60%
Huaneng Yushe Power Generation Co., Ltd.	PRC	held directly	RMB 615,760,000	Power generation, power distribution, sales of power	60%	60%
Huaneng Hunan Yueyang Power Generation Limited Liability Company	PRC	held directly	RMB 1,935,000,000	Power generation	55%	55%
Huaneng Chongqing Luohuang Power Generation Limited Liability Company ("Luohuang Power")	PRC	held directly	RMB 1,748,310,000	Power generation	60%	60%
Huaneng Pingliang Power Generation Co., Ltd.	PRC	held directly	RMB 924,050,000	Power generation	65%	65%
Huaneng Nanjing Jinling Power Generation Co., Ltd.	PRC	held directly	RMB 1,513,136,000	Power generation	60%	60%
Huaneng Qidong Wind Power Generation Co., Ltd.	PRC	held directly	RMB 391,738,500	Development of wind power projects, production and sales of electricity	65%	65%
Tianjin Huaneng Yangliuqing Co-generation Limited Liability Company ("Yangliuqing Co-generation")	PRC	held directly	RMB 1,537,130,909	Power generation, heat supply, facilities installation, maintenance and related services	55%	55%
Huaneng Beijing Co-generation Limited Liability Company ("Beijing Co-generation") (iii)	PRC	held directly	RMB 3,702,090,000	Construction and operation of power plants and related construction projects	41%	66%
Huaneng Wuhan Power Generation Co., Ltd. ("Wuhan Power")	PRC	held directly	RMB 1,478,461,500	Investment, construction, operation and management of electricity projects, development and utilization of clean energy resources	75%	75%
Huaneng Anyuan Power Generation Co., Ltd. ("Anyuan Power")	PRC	held directly	RMB 1,175,117,300	Construction and operation of power plants and related construction projects, Production of electricity	100%	100%
Huaneng Hualiangting Hydropower Co., Ltd. ("Hualiangting Hydropower")	PRC	held directly	RMB 50,000,000	Generation and transfer of power supply, water supply (irrigation)	100%	100%
Huaneng Chaohu Power Generation Co., Ltd. ("Chaohu Power") (iv)	PRC	held directly	RMB 840,000,000	Construction, operation, management of electricity projects,development and utilization of clean energy resources	60%	70%
Huaneng Jingmen Thermal Power Co., Ltd. ("Jingmen Thermal Power")	PRC	held directly	RMB 780,000,000	Thermal power, power development and other service	100%	100%

Name of subsidiary	Country of incorporation	Type of interest held	Registered capital	Business nature and scope of operations	Percentage of equity interest held
					Interest	Voting

Enshi Qingjiang Dalongtan Hydropower Development Co., Ltd. ("Dalongtan Hydropower")	PRC	held directly	RMB 76,000,000	Hydropower development, production and management of electric power, urban water supply	97%	97%
Huaneng Suzhou Thermal Power Co., Ltd. ("Suzhou Thermal Power") (v)	PRC	held directly	RMB 600,000,000	Construction, operation and management of electricity projects, development and utilization of clean energy	53.45%	100%
Huaneng Hainan Power Generation Limited Company ("Hainan Power")	PRC	held directly	RMB 1,326,419,587	Investment, construction operation of various power plants, regular energy and new energy development	91.80%	91.80%
Huaneng Ruijin Power Generation Co., Ltd. ("Ruijin Power Generation")	PRC	held directly	RMB 536,923,299	Construction, operation, management of electricity projects, development and utilization of clean energy	100%	100%
Huaneng Yingcheng Thermal Power Co., Ltd. ("Yingcheng Thermal Power")	PRC	held directly	RMB 650,000,000	Construction and operation of power plants and production, sales of power and heat	100%	100%
Huaneng Heilongjiang Power Generation Limited Company ("Heilongjiang Power")	PRC	held directly	RMB 783,350,000	Development, investment, construction, production and management of power (thermal) projects	100%	100%
Huaneng Hegang Power Generation Limited Company ("Hegang Power")	PRC	held indirectly	RMB 1,092,550,000	The electricity power construction, energy conservation and development projects, heat production and supply	64%	64%
Huaneng Xinhua Power Generation Limited Liability Company ("Xinhua Power")	PRC	held indirectly	RMB 284,880,000	Power generation, power equipment repair	70%	70%
Huaneng Tongjiang Wind Power Generation Limited Company ("Tongjiang Wind Power")	PRC	held indirectly	RMB 330,000,000	Wind power generation, wind power plants operation, planning and design	82.85%	82.85%
Huaneng Daqing Thermal Power Limited Company ("Daqing Thermal Power")	PRC	held indirectly	RMB 630,000,000	Power generation, thermal production and supply	100%	100%
Daqing Luyuan Wind Power Generation Limited Company ("Luyuan Wind Power")	PRC	held indirectly	RMB 451,000,000	Wind power generation	100%	100%
Huaneng Yichun Thermal Power Limited Company ("Yichun Thermal Power")	PRC	held indirectly	RMB 534,000,000	Power construction, production and sales, thermal production and sales production of heat and hot water	100%	100%
Huaneng Heilongjiang Energy Sales Limited Company ("Heilongjiang Energy Sales")	PRC	held indirectly	RMB 210,000,000	Power supply,	100%	100%

					Percentage of equity interest held
Name of subsidiary	Country of incorporation	Type of Interest held	Registered capital	Business nature and scope of operations	Interest	Voting
Zhaodong Huaneng Thermal Power Limited Company ("Zhaodong Thermal Power")	PRC	held indirectly	RMB 10,000,000	Heating production and supply	100%	100%
Huaneng Jilin Power Generation Limited Company ("Jilin Power")	PRC	held directly	RMB 1,917,130,000	Power (thermal) projects, development of new energy projects investment, construction, production, operation and sales	100%	100%
Huaneng Linjiang Jubao Hydropower Limited Company ("Jubao Hydropower")	PRC	held indirectly	RMB 20,000,000	Hydropower development and operation, construction and operation of photovoltaic power generation	100%	100%
Huaneng Jilin Energy Sales Limited Company ("Jilin Energy Sales-)	PRC	held indirectly	RMB 210,000,000	Thermal (cold) production and supply, power supply	100%	100%
Huaneng Jilin Biological Power Generation Limited Company ("Jilin Biological Power')	PRC	held indirectly	RMB 183,800,000	Biomass power generation	100%	100%
Huaneng Shandong Power Generation Limited Company ("Shandong Power")	PRC	held directly	RMB 4,241,460,000	Power (thermal) project development, investment. construction and management	80%	80%
Huaneng Jining New Energy Limited Company ("Jining New Energy") (vi)	PRC	held indirectly	RMB 38,000,000	investment, construction and management of photovoltaic and wind power projects	80%	100%
Huaneng Zibo Boshan Photovoltaic Power Limited Company ("Zibo Photovoltaic") (vi)	PRC	held indirectly	RMB 22,000.000	Solar power generation, sales	80%	100%
Huaneng Rizhao Thermal Power Limited Company ("Rizhao Thermal Power") (vi)	PRC	held indirectly	RMB 52,000,000	Urban heat construction, maintenance and operation design and construction of heat engineering	80%	100%
Huaneng Laiwu New Energy Limited Company ("Laiwu New Energy") (vi)	PRC	held indirectly	RMB 68,000,000	Photovoltaic power and wind power generation	80%	100%
Huaneng Shandong Sishui New Energy Limited Company ("Sishui New Energy") (vi)	PRC	held indirectly	RMB 36,000,000	Solar energy grid connected generation	80%	100%
Huaneng Shandong Electric And Thermal Power Marketing Limited Company ("Shandong Power Marketing") (vi)	PRC	held indirectly	RMB 200,000,000	Sales and service of power and heating products, investment in power industry	80%	100%
Huaneng Shandong Information Technology Limited Company ("Shandong Power Information Company") (vi)	PRC	held indirectly	RMB 80,000,000	Information technology and management consulting services	80%	100%
Huaneng Penglai Wind Power Generation Limited Company ("Penglai Wind Power") (vi)	PRC	held indirectly	RMB 177,210,000	Development, investment, construction and management of wind power projects	80%	100%

					Percentage of equity interest held
Name of subsidiary	Country of incorporation	Type of Interest held	Registered capital	Business nature and scope of operations	Interest	Voting

Huaneng Zhanhua New Energy Limited Company ("Zhanhua New Energy") (vi)	PRC	held indirectly	RMB 235,298,200	Wind power, photovoltaic power generation	80%	100%
Huaneng Venial Bajiao Thermal Power Limited Company ("Hajino Thermal Power") (vi)	PRC	held indirectly	RMB 540,000,000	Power generation projects preparation	80%	100%
Huaneng Weihai Port Photovoltaic Power Generation Limited Company ("Port Photovoltaic") (vi)	PRC	held indirectly	RMB 24,960,000	Photovoltaic power generation projects development and construction, electricity sales	80%	100%
Huaneng Zibo Baiyanghe Power Generation Limited Company ("Baiyanghe Power") (vi)	PRC	held indirectly	RMB 1,098,567,344	Power production, ongrid sales, thermal production and supply	80%	100%
Huaneng Yantai Power Generation Limited Company ("Venial Power") (vi)	PRC	held indirectly	RMB 547,479,100	Production and sales of electricity power and heat	80%	100%
Huaneng Jinan Huangtai Power Generation Limited Company ("Huangtai Power") (vi)	PRC	held indirectly	RMB 1,391,878,400	Electricity power production, heating management	72%	90%
Huaneng Dezhou Thermal Power Limited Company ("Dezhou Thermal Power") (vi)	PRC	held indirectly	RMB 20,000,000	Urban heat construction, maintenance and operation design and construction of heat engineering	68%	85%
Huaneng Dongying New Energy Limited Company ("Dongying New Energy") (vi)	PRC	held indirectly	RMB 87,906,822	Wind power projects development, wind power generation and sales of electricity	56%	70%
Huaneng Shandong Power Generation Maintenance Technology Limited Company ("Shandong Maintenance Company") (vi)	PRC	held indirectly	RMB 50,000,000	Power engineering design, construction and construction	76.55%	100%
Huaneng Shandong Electric Power Fuel Limited Company ("Shandong Fuel Company') (vi)	PRC	held indirectly	RMB 100,000,000	Wholesale operation of coal	76.55%	100%
Shandong Rizhao Power Generation Limited Company ("Rizhao Power")(vi)	PRC	held indirectly	RMB 1,245,587,900	Heat, engaged in power business	88.80%	100%
Huaneng Laiwu Power Generation Limited Company ("Laiwu Power") (vi)	PRC	held indirectly	RMB 1,800,000,000	Power production	64%	80%
Huaneng Shandong Ruyi Coal Power Limited Company ("Ruyi Coal Power") (vi)	PRC	held indirectly	RMB 1,294,680,000	Development, investment, construction, operation and management of electricity power and coal	40%	100%
Huaneng Jiaxiang Power Generation Limited Company ("Jiaxiang Power") (vi)	PRC	held indirectly	RMB 646,680,000	Power generation, electrical equipment maintenance	40%	100%

					Percentage of equity interest held
Name of subsidiary	Country of incorporation	Type of Interest held	Registered capital	Business nature and scope of operations	Interest	Voting

Huaneng Qufu Co-generation Limited Company ("Qufu Co-generation") (vi)	PRC	held indirectly	RMB 300,932,990	Sales and production of electric power, thermal power	40%	100%
Huaneng Jining Hi-Tech Zone Co-generation Limited Company ("Jining Co-generation") (vi)	PRC	held indirectly	RMB 118,699,760	Heat supply and power generation	40%	100%
Huaneng Shandong (Hongkong) Investment Limited Company ("Hong Kong Investment") (vi)	Hong Kong	held indirectly	10,000 Shares	Investment	80%	100%
Shandong Silk Road International Power Limited Company ("Shandong Silk Road") (vi)	PRC	held indirectly	RMB 35,000,000	Contracting overseas projects and domestic international bidding projects, construction and operation of power projects	80%	100%
Shandong Changdao Wind Power Generation Limited Liability Company ("Changdao Wind Power") (vi)	PRC	held indirectly	RMB 33,500.000	Wind power, on-grid sales	48%	60%
Huaneng Rongcheng New Energy Co., Ltd. ("Rongcheng New Energy'', (vi)	PRC	held indirectly	RMB 36,540,000	Wind power generation	48%	100%
Huaneng Jining Yunhe Power Generation Co., Ltd. ("Yunhe Power") (vi)	PRC	held indirectly	RMB 696,355,300	Electrical (thermal) production and on-grid sales, technology consulting and services	78.68%	98.35%
Huaneng Linyi Power Generation Limited Company ("Linyi Power") (vi)	PRC	held indirectly	RMB 1,093,313,404	Power generation	60%	75%
Liaocheng Changrun National Electric Heating Limited Company ("Liaocheng Changrun") (vi)	PRC	held indirectly	RMB 130,000,000	Heat operation, installation and repair of water, electricity, heating	60%	75%
Linyi Lantian Thermal Power Limited Company ("Lantian Thermal Power") (vi)	PRC	held indirectly	RMB 36,000,000	Heat supply, maintenance of thermal power network, power sales, installation and maintenance of distribution facilities	54.40%	68%
Yantai 500 Heating Limited Company ("Yantai 500") (vi)	PRC	held indirectly	RMB 20,500,000	Central heat services, plumbing and pipe installation services	64%	80%
Huaneng Liaocheng Co-generation Limited Company ("Liaocheng Co-generation) (vi)	PRC	held indirectly	RMB 610,670,000	Power, heat production and sales	60%	100%
Huaneng Henan Zhongyuan Gas Power Generation Co., Ltd. ("Zhongyuan Gas")	PRC	held directly	RMB 400,000,000	Investment, construction, operation and management of power projects. thermal supply, development and utilization of clean energy resources	90%	90%

Subsidiaries acquired from business combinations not under common control

					Percentage of equity interest held
Name of subsidiary	Country of incorporation	Type of Interest held	Registered capital	Business nature and scope of operations	Interest	Voting
Huaneng Weihai Power Generation Limited Liability Company ("Weihai Power")	PRC	held directly	RMB 1,822,176,621	Power generation	60%	60%
Huaneng Huaiyin Power Generation Limited Company	PRC	held directly	RMB 265,000,000	Power generation	100%	100%
Huade County Daditaihong Wind Power Utilization Limited Liability Company	PRC	held directly	RMB 196,400,000	Wind power development and utilization	100%	100%
Huaneng Zhanhua Co-generation Limited Company	PRC	held directly	RMB 190,000,000	Production and sales of electricity and thermal energy	100%	100%
Shandong Hualu Sea Transportation Limited Company	PRC	held directly	RMB 100,000,000	Cargo transportation along domestic coastal areas, goods storage	53%	53%
Huaneng Qingdao Port Limited Company	PRC	held directly	RMB 219,845,000	Loading and conveying warehousing, conveying, water carriage materials supply	51%	51%
Huaneng Yunnan Diandong Energy Limited Liability Company ("Diandong Energy")	PRC	held directly	RMB 3,769,140,000	Electricity projects investment power generation and sales, coal exploitation and investment	100%	100%
Yunnan Diandong Yuwang Energy Limited Company ("Diandong Yuwang")	PRC	held directly	RMB 1,700,740,000	Electricity projects investment power generation and sales, coal exploitation and investment	100%	100%
Huaneng Suzihe Hydropower Development Limited Company	PRC	held directly	RMB 50,000,000	Hydropower, aquaculture, agriculture irrigation	100%	100%
Enshi City Mawei Valley Hydropower Development Co, Ltd.	PRC	held directly	RMB 101,080,000	Hydro-resource development hydropower, aquaculture	100%	100%
Huaneng Luoyang Co-generation Limited Liability Company	PRC	held directly	RMB 600,000,000	Production and sales of electricity and heating	80%	80%
Huaneng Jinling Combined Cycle Co-generation Co., Ltd. ("Jinling CCGT") (vii)	PRC	held directly	RMB 356,350,000	Construction and management of power plants and related projects	51%	72%
Huaneng Zhumadian Wind Power Generation Co, Ltd.	PRC	held directly	RMB 30,000,000	Wind power generation, new energy development and utilization	90%	90%
SinoSing Power	Singapore	held directly	US$ 1,476,420,585	Investment holding	100%	100%
Tuas Power	Singapore	held indirectly	S$ 1,433,550,000	Investment holding	100%	100%
Tuas Power Supply Pte Ltd.	Singapore	held indirectly	S$ 500,000	Power sales	100%	100%
TP Asset Management Pte Ltd.	Singapore	held indirectly	S$ 2	Render of environment engineering services	100%	100%
TPGS Green Energy Pte Ltd.	Singapore	held indirectly	S$ 1,000,000	Provision of utility services	75%	75%
NewEarth Pte Ltd.	Singapore	held indirectly	S$ 10,111,841	Consultancy in waste recycling	100%	100%
NewEarth Singapore Pte Ltd.	Singapore	held indirectly	S$ 17,816,050	Industrial waste management and recycling	100%	100%

					Percentage of equity interest held
Name of subsidiary	Country of incorporation	Type of Interest held	Registered capital	Business nature and scope of operations	Interest	Voting

Xuzhou Tongshan District Xiehe Wind Power Generation Limited Liability Company ("Tongshan Xiehe Wind Power Generation")	PRC	held indirectly	RMB 3,000,000	Wind power generation	100%	100%
Luoyang Yangguang Co-generation Limited Liability Company ("Yangguang Co-generation")	PRC	held indirectly	RMB 250,000,000	Production and supply of electricity and heat power	100%	100%
Shanxi Xiaoyi Economic Development Zone Huaneng Energy Service Co, Ltd. ("Shanxi Xiaoyi Energy") (viii) (Note 40)	PRC	held indirectly	RMB 100,000,000	Electricity sales, sales of raw coal and processed coal	51%	100%
Ruzhou Xuji Wind Power Generation Limited Co. Ltd (Note 40)	PRC	held indirectly	RMB 4,000,000	Wind power and photovoltaic power generation	95%	100%

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Available-for-sale financial assets (Tables)

12 Months Ended

Dec. 31, 2017

Available-for-sale financial assets [abstract]

Available-for-sale financial assets

	As at 31 December
	2017		2016
Listed security (Fair value measurement)
China Yangtze Power Co., Ltd.		-		1,820,255
Others		9,223		458
Subtotal		9,223		1,820,713
Unlisted securities (Cost measurement)
10% of Shanxi Xishan Jinxing Energy Co., Ltd.		531,274		531,274
9.09% of Ganlong Double-track Railway Co., Ltd.		1,000,000		1,000,000
Others		64,496		54,045
Subtotal		1,595,770		1,585,319
Total		1,604,993		3,406,032

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Land use rights (Tables)

12 Months Ended

Dec. 31, 2017

Land use rights [abstract]

Detailed information about land use rights

	2017			2016
Beginning of the year
Cost		10,525,537			10,059,872
Accumulated amortization		(1,792,367	)		(1,530,972	)
Accumulated impairment losses		(276,823	)		(215,134	)
Net book value		8,456,347			8,313,766
Movement:
Business combination (Note 40)		3,182,914			61,027
Addition		331,683			364,280
Amortization charge for the year		(368,898	)		(242,400	)
Impairment charge for the year (Note 7)		(108,590	)		(51,981	)
Disposals		(86,631	)		(1,969	)
Disposal of subsidiaries		(146,922	)		-
Currency translation differences		4,882			13,624
End of the year		11,264,785			8,456,347
Cost		13,775,976			10,525,537
Accumulated amortization		(2,128,752	)		(1,792,367	)
Accumulated impairment losses		(382,439	)		(276,823	)
Net book value		11,264,785			8,456,347

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Power generation licenses (Tables)

12 Months Ended

Dec. 31, 2017

Power generation licenses [abstract]

Detailed information about power generation license

	2017		2016
Beginning of the year		3,849,199		3,679,175
Movement:
Currency translation differences		67,047		170,024
End of the year		3,916,246		3,849,199

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Mining rights (Tables)

12 Months Ended

Dec. 31, 2017

Mining rights [abstract]

Detailed information about mining rights

	2017			2016
Beginning of the year
Cost		2,406,567			2,406,567
Accumulated impairment losses		(760,296	)		(760,296	)
Net book value		1,646,271			1,646,271
Movement:
Addition		-			-
Impairment charge for the year		-			-
End of the year		1,646,271			1,646,271
Cost		2,406,567			2,406,567
Accumulated impairment losses		(760,296	)		(760,296	)
Net book value		1,646,271			1,646,271

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Derivative financial instruments (Tables)

12 Months Ended

Dec. 31, 2017

Derivative financial instruments [abstract]

Details of derivative financial instruments

	As at 31 December
	2017		2016
Derivative financial assets
－Hedging instruments for cash flow hedge (fuel swap contracts)		330,966		264,535
－Hedging instruments for cash flow hedge (exchange forward contracts)		-		107,907
－Financial instruments at fair value through profit or loss (fuel swap contracts)		2,726		5,881
Total		333,692		378,323
Less: non-current portion
－Hedging instruments for cash flow hedge (fuel swap contracts)		75,328		71,341
－Hedging instruments for cash flow hedge (exchange forward contracts)		-		28,380
Total non-current portion		75,328		99,721
Current portion		258,364		278,602
Derivative financial liabilities
－Hedging instruments for cash flow hedge (fuel swap contracts)		11,794		164,464
－Hedging instruments for cash flow hedge (exchange forward contracts)		68,102		454
－Hedging instruments for cash flow hedge (interest rate swap contracts)		130,643		169,201
－Financial instruments at fair value through profit or loss (fuel swap contracts)		125		619
Total		210,664		334,738
Less: non-current portion
－Hedging instruments for cash flow hedge (fuel swap contracts)		2,026		31,673
－Hedging instruments for cash flow hedge (exchange forward contracts)		21,745		295
－Hedging instruments for cash flow hedge (interest rate swap contracts)		124,715		169,201
Total non-current portion		148,486		201,169
Current portion		62,178		133,569

Analysis of contractual cash inflows/ (outflows) of major derivative financial instruments

			Cash flows
	Carrying amounts		Contractual cash flows			Within 1 year			Between 1 and 5 years			After 5 years
As at 31 December 2017 Derivative financial assets Fuel derivatives used for hedging (net settlement)		330,966		330,966			255,638			75,328			-
Fuel derivatives that do not qualify as hedges (net settlement)		2,726		2,726			2,726						-
Derivative financial liabilities
Fuel derivatives used for hedging  (net settlement)		11,794		(11,794	)		(9,768	)		(2,026	)		-
Forward exchange contracts used for hedging
- inflows				2,509,363			2,041,812			467,551			-
- outflows				(2,568,034	)		(2,083,441	)		(484,593	)		-
		68,102		(58,671	)		(41,629	)		(17,042	)		-
Net-settled interest rate swaps used for hedging  - net cash inflows/(outflows)		130,643		(154,367	)		(82,533	)		(71,834	)		-
Fuel derivatives that do not qualify as hedges (net settlement)		125		(125	)		(125	)		-
As at 31 December 2016 derivative financial assets Fuel derivatives used for hedging (net settlement)		264,535		264,535			193,194			71,341			-
Forward exchange contracts used for hedging
- inflows				2,118,946			1,488,071			630,875			--
-  outflows				(2,009,205	)		(1,407,606	)		(601,599	)		-
		107,907		109,741			80,465			29,276			-
Fuel derivatives that do not qualify as hedges (net settlement)		5,881		5,881			5,881			-			-
Derivative financial liabilities
Fuel derivatives used for hedging (net settlement)		164,464		(164,464	)		(132,792	)		(31,672	)		-
Forward exchange contracts used for hedging
- inflows				527,939			475,881			52,058			-
- outflows				(528,454	)		(476,104	)		(52,350	)		-
		454		(515	)		(223	)		(292	)		-
Net―settled interest rate swaps used for hedging - net cash inflows/(outflows)		169,201		(228,905	)		(113,563	)		(115,342	)		-
Fuel derivatives that do not qualify as hedges (net settlement)		619		(619	)		(619	)		-			-

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Goodwill (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill [abstract]

Movements of goodwill

	2017			2016
Beginning of the year
Cost		15,391,642			14,919,930
Accumulated impairment losses		(3,255,913	)		(3,242,748	)
Net book value		12,135,729			11,677,182
Movement:
Business combination (Note 40)		3,167,566			-
Disposal of subsidiary-cost		(309,269	)		-
Disposal of subsidiary-impairment		309,269			-
Currency translation differences-cost		186,015			471,712
Currency translation differences-impairment		(5,190	)		(13,165	)
End of the year		15,484,120			12,135,729
Cost		18,435,954			15,391,642
Accumulated impairment losses		(2,951,834	)		(3,255,913	)
Net book value		15,484,120			12,135,729

Carrying amounts of major goodwill allocated to individual CGUs

	2017		2016
PRC Power segment:
Shandong Power		2,739,818		-
Wuhan Power		518,484		518,484
Hainan Power		506,336		506,336
Heilongjiang Power		265,319		-
Yangliuqing Cogeneration		151,459		151,459
Qinbei Power		109,913		109,913
Jilin Power		109,826		-
Yueyang Power Company		100,907		100,907
Beijing Cogeneration		95,088		95,088
Singapore segment:
Tuas Power		10,561,956		10,381,131

Discount rates used for value-in-use calculations

PRC Power segment	8.51%-13.59	%
Singapore segment	7.30	%

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Other non-current assets (Tables)

12 Months Ended

Dec. 31, 2017

Other non-current assets [abstract]

Details of other non-current assets

	As at 31 December
	2017		2016
VAT recoverable		2,741,604		1,651,891
Prepayments for pre-construction cost		937,161		-
Intangible assets *		697,884		411,308
Finance lease receivables		617,187		563,099
Prepaid territorial water use right **		374,743		777,994
Prepayments for capacity quota		303,399		-
Profit compensation from Huaneng Group (Note 40)		244,533		-
Prepaid connection fees		120,486		108,365
Others		1,659,848		809,288
Total		7,696,845		4,321,945

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Inventories (Tables)

12 Months Ended

Dec. 31, 2017

Inventories [abstract]

Details of inventories

	As at 31 December
	2017		2016
Fuel (coal and oil) for power generation		5,684,824		5,391,068
Material and supplies		1,869,462		1,655,357
		7,554,286		7,046,425
Less: provision for inventory obsolescence		168,875		167,282
Total		7,385,411		6,879,143

Movements of provision for inventory obsolescence during the years

	2017			2016			2015
Beginning of the year		(167,282	)		(162,389	)		(163,458	)
Provision		(1,520	)		(1,134	)		(2,867	)
Reversal		1,782			1,390			1,039
Disposal of subsidiaries		162			-			-
Currency translation differences		(2,017	)		(5,149	)		2,897
End of the year		(168,875	)		(167,282	)		(162,389	)

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Other receivables and assets (Tables)

12 Months Ended

Dec. 31, 2017

Other receivables and assets [abstract]

Other receivables and assets

	As at 31 December
	2017		2016
Prepayments for inventories		387,335		252,389
Prepaid income tax		150,838		141,423
Prepayments for pre-construction cost		-		885,051
Prepayments for capacity quota		-		303,399
Others		181,913		121,810
Total prepayments		720,086		1,704,072
Less: provision for doubtful accounts		4,638		-
Total prepayments, net		715,448		1,704,072
Dividends receivable		273,897		861,408
Receivables from sales of fuel		290,040		-
Others		1,528,855		908,296
Subtotal other receivables		2,092,792		1,769,704
Less: provision for doubtful accounts		29,241		28,961
Total other receivables, net		2,063,551		1,740,743
Profit compensation from Huaneng Group (Note 40)		615,013		-
VAT recoverable		2,607,505		2,008,955
Designated loan to a joint venture		80,000		80,000
Gross total		6,115,396		5,562,731
Net total		6,081,517		5,533,770

Gross amounts of other receivables denominated in currencies

	As at 31 December
	2017		2016
RMB		1,966,971		1,635,051
S$ (RMB equivalent)		76,529		95,816
US$ (RMB equivalent)		49,292		38,837
Total		2,092,792		1,769,704

Movements of other receivables provision for doubtful accounts

	2017			2016			2015
Beginning of the year		(28,961	)		(27,957	)		(29,644	)
Provision		(5,890	)		(1,011	)		(9	)
Reversal/write-off		972			7			1,696
End of the year		(33,879	)		(28,961	)		(27,957	)

Ageing analysis of other receivables fully recoverable

	As at 31 December
	2017		2016
Within 1 year		61,189		42,103
Between 1 to 2 years		1,360		2,683
Between 2 to 3 years		1,130		847
Over 3 years		76,376		67,476
Total		140,055		113,109

Ageing analysis of other receivables not expected to be recovered

	As at 31 December
	2017		2016
Within 1 year		7,535		752
Between 1 to 2 years		10		912
Between 2 to 3 years		463		285
Over 3 years		33,402		34,263
Total		41,410		36,212

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Accounts receivable (Tables)

12 Months Ended

Dec. 31, 2017

Accounts receivable [abstract]

Accounts receivable

	As at 31 December
	2017		2016
Accounts receivable		21,948,753		14,050,096
Notes receivable		3,610,928		2,432,264
		25,559,681		16,482,360
Less: provision for doubtful accounts		112,086		88,889
Total		25,447,595		16,393,471

Gross amounts of account receivables denominated in currencies

	As at 31 December
	2017		2016
RMB		24,633,465		15,586,989
S$ (RMB equivalent)		922,993		876,956
US$ (RMB equivalent)		3,223		18,415
Total		25,559,681		16,482,360

Movements of provision for doubtful accounts

	2017			2016			2015
Beginning of the year		(88,889	)		(2,054	)		(11,809	)
Provision		(23,363	)		(88,818	)		(60	)
Reversal		-			397			1,833
Write-off		167			1,682			-
Transfer from a subsidiary to a joint venture		-			-			8,126
Currency translation differences		(1	)		(96	)		(144	)
End of the year		(112,086	)		(88,889	)		(2,054	)

Ageing analysis of accounts receivable

	As at 31 December
	2017		2016
Within 1 year		24,787,284		16,152,038
Between 1 to 2 years		576,564		279,694
Between 2 to 3 years		155,360		29,123
Over 3 years		40,473		21,505
Total		25,559,681		16,482,360

Ageing analysis of accounts receivable and notes receivable neither individually nor collectively impaired

	As at 31 December
	2017		2016
Neither past due nor impaired		24,936,171		16,063,215
Less than 1 year past due		267,845		248,597
Between 1 to 2 years past due		206,188		63,094
Between 2 to 3 years past due		27,130		17,944
Over 3 years past due		10,261		621
Total		25,447,595		16,393,471

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Share capital (Tables)

12 Months Ended

Dec. 31, 2017

Share capital [abstract]

Share capital

	2017				2016
	Number of shares		Share capital		Number of shares		Share capital
			RMB '000				RMB '000
As at 1 January and 31 December
A shares		10,500,000,000		10,500,000		10,500,000,000		10,500,000
Overseas listed foreign shares		4,700,383,440		4,700,383		4,700,383,440		4,700,383
Total		15,200,383,440		15,200,383		15,200,383,440		15,200,383

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Perpetual corporate bonds (Tables)

12 Months Ended

Dec. 31, 2017

Perpetual corporate bonds [abstract]

Perpetual corporate bonds

Type of Bonds	Issuance Date	Category	Initial Annual Distribution Rates	Issue Price	Number	Par Value	Initial Period	Conversion Condition	Conversion Result
				RMB '000		RMB '000
Bond A	September 2017	Equity Instrument	5.05%	0.1	25,000,000	2,500,000	3 Years	None	None
Bond B	September 2017	Equity Instrument	5.17%	0.1	25,000,000	2,500,000	5 years	None	None
Total						5,000,000

Changes of perpetual corporate bonds

	As at 1 January 2017				Issurance				Cumulative Interests		As at 31 December 2017
Type of Bonds	Number		Amount		Number		Amount				Number		Amount
			RMB '000				RMB '000		RMB '000				RMB '000
Bond A		-		-		25,000,000		2,499,975		33,897		25,000,000		2,533,872
Bond B		-		-		25,000,000		2,499,975		34,703		25,000,000		2,534,678
Total		-		-		50,000,000		4,999,950		68,600		50,000,000		5,068,550

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Surplus reserves (Tables)

12 Months Ended

Dec. 31, 2017

Surplus reserves [abstract]

Surplus reserves

	As at 1 January 2017 and 31 December 2017
Surplus reserves		8,140,030

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Long-term loans (Tables)

12 Months Ended

Dec. 31, 2017

Long-term loans [abstract]

Long-term loans

	As at 31 December
	2017		2016
Loans from Huaneng Group
and its subsidiaries (a)		7,427,183		3,818,807
Bank loans and other loans (b)		117,702,233		70,732,439
		125,129,416		74,551,246
Less: Current portion of long-term loans		18,098,458		9,560,885
Total		107,030,958		64,990,361

Loans from Huaneng Group and its subsidiaries (a)

	As at 31 December 2017
	Original currency		RMB equivalent		Less: Current portion		Non current portion		Annual interest rate
		000
Loans from Huaneng Group
Unsecured
RMB
- Variable rate		665,225		665,225		-		665,225		4.75	%
Loans from Huaneng Finance
Unsecured
RMB
- Variable rate		2,794,780		2,794,780		244,500		2,550,280		4.28%-4.66	%
Loans from Huaneng Tiancheng Financial Leasing Co., Ltd. ("Tiancheng Financial Leasing")
Secured
RMB
- Variable rate		3,967,178		3,967,178		1,878,994		2,088,184		4.06%-4.51	%
Total				7,427,183		2,123,494		5,303,689

	As at 31 December 2016
	Original currency		RMB equivalent		Less: Current portion		Non current portion		Annual interest rate
		000
Loans from Huaneng Group
Unsecured
RMB
- Variable rate		665,015		665,015		640,485		24,530		4.75	%
Loans from HIPDC
Unsecured
RMB
- Variable rate		210		210		-		210		4.75	%
Loans from Huaneng Finance
Unsecured
RMB
- Variable rate		286,000		286,000		60,000		226,000		4.41%-4.75	%
Loans from Huaneng Tiancheng Financial Leasing
Secured
RMB
- Variable rate		2,867,582		2,867,582		154,737		2,712,845		4.42	%
Total				3,818,807		855,222		2,963,585

Bank loans and other loans (b)

	As at 31 December 2017
	Original currency	RMB equivalent	Less: Current portion	Non current portion	Annual interest rate
	000
Secured
RMB
- Fixed rate	7,080,379	7,080,379	1,213,150	5,867,229	4.41%-4.90%
- Variable rate	4,117,055	4,117,055	657,231	3,459,824	4.66%-4.90%
Unsecured
RMB
- Fixed rate	14,981,859	14,981,859	3,179,426	11,802,433	2.00%-5.00%
- Variable rate	76,467,082	76,467,082	10,013,829	66,453,253	1.80%-6.03%
US$
- Variable rate	347,676	2,271,785	418,163	1,853,622	1.74%/2.26%
S$
- Variable rate	2,538,619	12,396,329	419,570	11,976,759	2.73%/4.25%
€
- Fixed rate	30,463	237,680	67,207	170,473	1.30%-2.15%
JPY
- Fixed rate	2,592,661	150,064	6,388	143,676	0.75%
Total		117,702,233	15,974,964	101,727,269

	As at 31 December 2016
	Original currency	RMB equivalent	Less: Current portion	Non current portion	Annual interest rate
	000
Secured
RMB
- Fixed rate	8,305,310	8,305,310	1,202,430	7,102,880	4.41%-4.90%
- Variable rate	760,500	760,500	56,800	703,700	4.66%-4.90%
Unsecured
RMB
- Fixed rate	15,896,017	15,896,017	2,515,343	13,380,674	2.65%-5.00%
- Variable rate	30,095,494	30,095,494	4,270,910	25,824,584	4.17%-5.65%
US$
- Variable rate	409,760	2,842,505	388,925	2,453,580	1.92%
S$
- Variable rate	2,580,522	12,385,213	196,410	12,188,803	2.76%/4.25%
€
- Fixed rate	39,187	286,329	68,271	218,058	2.00%/2.15%
JPY
- Fixed rate	2,702,533	161,071	6,574	154,497	0.75%
Total		70,732,439	8,705,663	62,026,776

Maturity of long-term loans

	Loans from Huaneng Group and its subsidiaries				Bank loans and other loans
	As at 31 December				As at 31 December
	2017		2016		2017		2016
			RMB '000				RMB '000
1 year or less		2,123,494		855,222		15,974,964		8,705,663
More than 1 year but no more than 2 years		1,689,582		715,400		19,039,483		11,420,746
More than 2 years but no more than 3 years		1,281,082		953,082		18,624,576		11,081,242
More than 3 years but no more than 4 years		294,020		928,082		16,388,976		7,769,955
More than 4 years but no more than 5 years		728,225		232,021		11,927,930		7,618,953
More than 5 years		1,310,780		135,000		35,746,304		24,135,880
		7,427,183		3,818,807		117,702,233		70,732,439
Less: amount due within 1 year included under current liabilities		2,123,494		855,222		15,974,964		8,705,663
Total		5,303,689		2,963,585		101,727,269		62,026,776

Interest payment schedule of long-term loans in future years

	As at 31 December
	2017		2016
1 year or less		5,071,743		2,987,045
More than 1 year but not more than 2 years		4,225,736		2,577,363
More than 2 years but not more than 5 years		7,903,397		4,912,222
More than 5 years		4,864,084		3,133,578
Total		22,064,960		13,610,208

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Other non-current liabilities (Tables)

12 Months Ended

Dec. 31, 2017

Other non-current liabilities [abstract]

Other non-current liabilities

	As at 31 December
	2017			2016
Finance lease payables(a)		1,600,106			1,088,846
Government grants
-Environmental subsidies(b)		1,245,810			1,122,406
-Other government grants		179,226			174,216
Other deferred income		1,825,614			379,615
Others		969,052			870,597
Subtotal		5,819,808			3,635,680
Current portion of finance lease payables		(470,985	)		(568,645	)
Current portion of other non-current liabilities		(64,361	)		(247,537	)
Subtotal		(535,346	)		(816,182	)
Total		5,284,462			2,819,498

Obligation under finance leases

	As at 31 December
	2017		2016
Within 1 year		500,790		605,806
After 1 year but within 2 years		312,125		266,792
After 2 years but within 3 years		281,990		82,470
After 3 years		674,256		181,345
		1,769,161		1,136,413
Less: total future interest expense		169,055		47,567
Total		1,600,106		1,088,846

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Accounts payable and other liabilities (Tables)

12 Months Ended

Dec. 31, 2017

Accounts payable and other liabilities [abstract]

Accounts payable and other liabilities

	As at 31 December
	2017		2016
Accounts and notes payable		15,496,475		12,059,004
Payables to contractors for construction		14,491,632		10,832,444
Retention payables to contractors		2,008,106		1,445,383
Amounts received in advance		1,504,926		365,887
Accrued interests		947,302		676,462
Others		4,451,691		3,367,437
Total		38,900,132		28,746,617

Carrying amounts of financial liabilities denominated in currencies

	As at 31 December
	2017		2016
RMB		36,399,243		27,222,632
S$ (RMB equivalent)		556,881		669,797
US$ (RMB equivalent)		436,358		479,179
JPY (RMB equivalent)		2,469		6,917
EUR (RMB equivalent)		255		2,205
Total		37,395,206		28,380,730

Ageing analysis of accounts and notes payable

	As at 31 December
	2017		2016
Within 1 year		15,201,380		11,902,522
Between 1 to 2 years		196,082		100,092
Over 2 years		99,013		56,390
Total		15,496,475		12,059,004

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Taxes payable (Tables)

12 Months Ended

Dec. 31, 2017

Taxes payable [abstract]

Taxes payable

	As at 31 December
	2017		2016
VAT payable		619,329		439,304
Income tax payable		430,703		440,791
Others		252,178		209,010
Total		1,302,210		1,089,105

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Short-term loans (Tables)

12 Months Ended

Dec. 31, 2017

Short-term loans [abstract]

Short-term loans

	As at 31 December 2017							As at 31 December 2016
	Original currency		RMB equivalent		Annual interest rate			Original currency		RMB equivalent		Annual interest rate
	'000							'000
Secured
RMB
- Fixed rate		24,000		24,000		4.71%-5.50	%		13,500		13,500		3.00	%
- Variable rate		-		-					112,034		112,034		2.77%-3.80	%
Unsecured
RMB
- Fixed rate		10,450,248		10,450,248		3.92%-4.35	%		3,319,947		3,319,947		3.70%-4.35	%
- Variable rate		69,777,100		69,777,100		3.74%-4.35	%		54,223,393		54,223,393		3.57%-4.35	%
Total				80,251,348							57,668,874

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Deferred income tax assets and liabilities (Tables)

12 Months Ended

Dec. 31, 2017

Deferred income tax assets and liabilities [abstract]

Deferred income tax assets and liabilities

	As at 31 December
	2017			2016
Deferred income tax assets before offsetting		3,604,577			2,432,552
Offset amount		(1,304,486	)		(1,168,595	)
Deferred income tax assets after offsetting		2,300,091			1,263,957
Deferred income tax liabilities before offsetting		(5,871,166	)		(3,431,347	)
Offset amount		1,304,486			1,168,595
Deferred income tax liabilities after offsetting		(4,566,680	)		(2,262,752	)
		(2,266,589	)		(998,795	)

Gross movement on deferred income tax accounts

	2017			2016			2015
Beginning of the year		(998,795	)		(1,429,752	)		(926,481	)
Business combination (Note 40)		(2,322,513	)		(58,929	)		(1,007,147	)
Disposal of subsidiaries (Note 6)		17,407			-			-
Credited to profit or loss (Note 33)		724,712			440,817			687,206
Charged to other comprehensive income		330,834			87,775			(198,525	)
Currency translation differences		(18,234	)		(38,706	)		15,195
End of the year		(2,266,589	)		(998,795	)		(1,429,752	)

Movements in deferred income tax assets without taking into consideration the offsetting

	Hedging reserve			Amortization of land use rights			Provision for impairment loss			Depreciation			Accrued expenses		VAT refunds on purchases of domestically manufactured equipment			Unused tax losses			Others			Total
As at 1 January 2016		199,876			14,417			399,418			572,379			40,938		230,442			235,984			696,403			2,389,857
Business combination		-			-			66,560			6,840			-		-			-			-			73,400
(Charged)/credited to profit or loss		-			(502	)		140,969			(41,015	)		1,185		(25,433	)		(5,128	)		71,610			141,686
Charged to other comprehensive income		(182,400	)		-			-			-			-		-			-			-			(182,400	)
Currency translation differences		-			-			207			-			-		-			132			9,670			10,009
As at 31 December 2016		17,476			13,915			607,154			538,204			42,123		205,009			230,988			777,683			2,432,552
Business combination(Note 40)		-			-			-			574,600			5,052		-			139,387			414,891			1,133,930
Disposal of subsidiaries(Note 6)		-			-			(10,686	)		(9,962	)		-		-			(5,566	)		(52,270	)		(78,484	)
(Charged)/credited to profit or loss		-			(493	)		(2,593	)		(70,209	)		7,076		(25,433	)		196,613			20,026			124,987
Charged to other comprehensive income		(11,905	)		-			-			-			-		-			-			-			(11,905	)
Currency translation differences		-			-			82			-			-		-			-			3,415			3,497
As at 31 December 2017		5,571			13,422			593,957			1,032,633			54,251		179,576			561,422			1,163,745			3,604,577

Movements in deferred income tax liabilities without taking into consideration the offsetting

	Hedging reserve			Fair value gains			Amortization of land use rights			Depreciation			Power generation license			Mining rights			Territorial water use right			Others			Total
As at 1 January 2016		-			(645,242	)		(904,173	)		(1,291,706	)		(625,460	)		(157,215	)		(74,201	)		(121,612	)		(3,819,609	)
Business combination		-			-			(10,423	)		-			-			-			-			(121,906	)		(132,329	)
Credited to profit or loss		-			-			24,948			169,088			-			27,832			1,769			75,494			299,131
(Charged)/credited to other comprehensive loss		(26,530	)		296,705			-			-			-			-			-			-			270,175
Currency translation differences		8,131			-			(1,507	)		(26,436	)		(28,903	)		-			-			-			(48,715	)
As at 31 December 2016		(18,399	)		(348,537	)		(891,155	)		(1,149,054	)		(654,363	)		(129,383	)		(72,432	)		(168,024	)		(3,431,347	)
Business combination (Note 40)		-			(1,736	)		(148,129	)		(3,209,672	)		-			-			-			(96,906	)		(3,456,443	)
Disposal of subsidiaries(Note 6)		-			-			1,761			22,162			-			-			68,696			3,272			95,891
Credited to profit or loss		-			-			27,457			525,780			-			-			1,327			45,161			599,725
(Charged)/credited to other comprehensive loss		(5,558	)		348,297			-			-			-			-			-			-			342,739
Currency translation differences		(304	)		-			(540	)		(9,490	)		(11,397	)		-			-			-			(21,731	)
As at 31 December 2017		(24,261	)		(1,976	)		(1,010,606	)		(3,820,274	)		(665,760	)		(129,383	)		(2,409	)		(216,497	)		(5,871,166	)

Unrecognized deferred income tax assets in respect of certain deductible temporary differences and accumulated tax losses

	As at 31 December
	2017		2016
Deductible temporary differences		4,672,788		2,957,316
Unused tax losses		8,665,079		6,669,820
Total		13,337,867		9,627,136

Summary of expiry dates of the tax losses for which no deferred income tax assets were recognized

	As at 31 December
	2017		2016
Year of expiry
2017		-		1,841,365
2018		1,557,045		1,122,070
2019		1,579,066		1,195,811
2020		1,524,531		1,061,468
2021		1,558,573		1,449,106
2022		2,445,864		-
Total		8,665,079		6,669,820

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Income tax expense (Tables)

12 Months Ended

Dec. 31, 2017

Income tax expense [abstract]

Income tax expense

	For the year ended 31 December
	2017			2016			2015
Current income tax expense		1,942,238			3,905,968			6,386,149
Deferred income tax (Note 31)		(724,712	)		(440,817	)		(687,206	)
Total		1,217,526			3,465,151			5,698,943

Reconciliation of effective income tax rate from notional income tax rate

	For the year ended 31 December
	2017			2016			2015
Notional tax on profit before income tax expense, calculated at the applicable income tax rates in the countries concerned		26.13	%		25.16	%		25.11	%
Effect of tax losses not recognized		18.45	%		1.58	%		(0.12	%)
Effect of deductible temporary differences not recognized		6.04	%		(0.20	%)		(0.16	%)
Effect of non-taxable income		(12.37	%)		(2.89	%)		(1.77	%)
Effect of non-deductible expenses		7.05	%		1.09	%		1.37	%
Others		(1.84	%)		0.35	%		0.39	%
Effective tax rate		43.46	%		25.09	%		24.82	%

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Earnings per share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings per share [abstract]

Earnings per share

	2017		2016		2015
Consolidated net profit attributable to equity holders of the Company		1,579,836		8,520,427		13,651,933
Less: cumulative distribution of perpetual corporate bonds		68,600		-		-
Consolidated net profit attributable to ordinary Shareholders of the Company		1,511,236		8,520,427		13,651,933
Weighted average number of the Company's outstanding ordinary shares ('000)*		15,200,383		15,200,383		14,485,383
Basic and diluted earnings per share (RMB)		0.10		0.56		0.94

Weighted average number of ordinary shares

	2017		2016		2015
	'000		'000		'000
Issued ordinary shares at 1 January		15,200,383		15,200,383		14,420,383
Effect of share issue		-		-		65,000
Weighted average number of
ordinary shares at 31 December		15,200,383		15,200,383		14,485,383

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Notes to consolidated statement of cash flows (Tables)

12 Months Ended

Dec. 31, 2017

Consolidated Statements of Cash Flows [abstract]

Bank balances and cash

	As at 31 December
	2017		2016		2015
Total bank balances and cash		9,364,823		7,881,630		7,537,813
Less: Restricted cash		82,433		71,129		59,563
Cash and cash equivalents as at year end		9,282,390		7,810,501		7,478,250

Bank balances and cash denominated in currencies

	As at 31 December
	2017		2016		2015
RMB		8,213,100		6,691,911		5,847,363
S$ (RMB equivalent)		835,995		869,591		1,130,356
US$ (RMB equivalent)		315,535		319,944		559,761
JPY (RMB equivalent)		193		184		205
HK$ (RMB equivalent)		-		-		128
Total		9,364,823		7,881,630		7,537,813

Changes in the group's liabilities from financing activities

Items		Loans (Note 24,30)			Bonds (Note 25,29)			Accrued interests (Note 27)			Finance leases payables (Note 26)			Interest rate swaps contracts (liabilities) (Note 14)
As at 1 January 2017			132,220,120			42,788,810			676,462			1,088,846			169,201
(a)	Business combination		47,562,251			-			85,380			521,083			-
(b)	Changes from financing cash flows:
	Proceeds from new bank loans		140,270,455			-			-			-			-
	Repayment of bank loans		(113,769,036	)		-			-			-			-
	Proceeds from new bonds		-			38,788,679			-			-			-
	Repayment of bonds		-			(50,300,000	)		-			-			-
	Capital element of finance lease rentals paid		-			-			-			(636,145	)		-
	Interest element of finance lease rentals paid		-			-			-			(58,874	)		-
	Interest paid		-			(885,000	)		(9,195,102	)		-			-
	Others		(3,135	)		(80,643	)		-			-			-
(c)	Exchange adjustments		82,298			-			2,095			235			-
(d)	Changes in fair value		-			-			-			-			(38,558	)
(e)	Other changes:
	New finance leases		-			-			-			659,895			-
	Interest expenses		-			747,377			8,902,402			99,225			-
	Capitalised borrowing costs		-			-			476,065			-			-
	Disposal of subsidiaries		(1,166,899	)		-			-			-			-
	Others		184,710			-			-			(74,159	)		-
As at 31 December 2017			205,380,764			31,059,223			947,302			1,600,106			130,643

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Related party balances and transactions (Tables)

12 Months Ended

Dec. 31, 2017

Related party balances and transactions [abstract]

Transactions between related parties

Names of related parties	Nature of relationship
Huaneng Group	Ultimate parent company
HIPDC	Parent company
Huaneng Energy & Communications Holdings Co., Ltd. and its subsidiaries	Subsidiaries of Huaneng Group*
Huaneng Property Co., Ltd. and its subsidiaries	Subsidiaries of Huaneng Group
Xi'an Thermal and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Group Technology Innovation Center	A subsidiary of Huaneng Group
Huaneng Hulunbuir Energy Development Company Ltd.and its subsidiaries	Subsidiaries of Huaneng Group
Alltrust Insurance Co., Ltd.	A subsidiary of Huaneng Group
North United Power Co., Ltd. and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Group Clean Energy Technology Research Institute Co., Ltd.	A subsidiary of Huaneng Group
Huaneng Renewables Corporation Limited and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Carbon Assets Management Company Limited	A subsidiary of Huaneng Group
Huaneng Group Hong Kong LimitedCompany	A subsidiary of Huaneng Group
Huaneng Lancangjiang Hydropower Co., Inc. and its subsidiaries	Subsidiaries of Huaneng Group
Changping Huaneng Training Center	A subsidiary of Huaneng Group
Huaneng Hainan Industry Co.,Ltd.	A subsidiary of Huaneng Group
Huaneng Baishan Coal Gangue Power Generation Co., Ltd.	A subsidiary of Huaneng Group
Great Wall Securities Co., Ltd. ("Great Wall Securities")	A subsidiary of Huaneng Group
Huaneng Nuclear Power Development Company Ltd.	A subsidiary of Huaneng Group
Huaneng Tibet Yarlung Zangbo River Hydropower Development & Investment Company Ltd. and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Xining Power Co., Ltd.	A subsidiary of Huaneng Group
Huaneng Coal Business Sector Co., Ltd. and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Integrated Industries Co., Ltd.	A subsidiary of Huaneng Group
Huaneng Ningxia Energy Company Ltd.	A subsidiary of Huaneng Group
Huaneng Shaanxi Power Generation Limited and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Xinjiang Energy Development Company Ltd. and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Gansu Energy Development Company Ltd. and its subsidiaries	Subsidiaries of Huaneng Group
Huaneng Capital Services Co., Ltd.	A subsidiary of Huaneng Group
Huaneng Shaanxi Qinling Power Generation Co., Ltd.	A subsidiary of Huaneng Group
Ningxia Daba Power Generation Co., Ltd.	A subsidiary of Huaneng Group
Huaneng Shandong Shidao Bay Nuclear Power Co., Ltd.	A subsidiary of Huaneng Group
Huangtai #8 Power Plant	An investee with significant influence
Shanghai Time Shipping	A joint venture of the Company
Jiangsu Nantong Power	A joint venture of the Company
Huaneng Yingkou Port Limited Liability Company	A joint venture of the Company
Luyi Power	A joint venture of the Company
Ruyi (Hong Kong) Energy and its subsidiaries	Joint ventures of the Company
Suzhou Sugao Renewables Service Co. Ltd.	A joint venture of the Company
Liaocheng Luxi Fuel Co., Ltd.Company	An associate of the Company
Zhengzhou Airport Xinggang Power Co., Ltd.	An associate of the Company

Names of related parties	Nature of relationship
Chongqing Huaneng Lime Company Limited	An associate of the Company
Hainan Nuclear	An associate of the Company
Sichuan Hydropower	An associate of the Company and also a subsidiary of Huaneng Group
Hanfeng Power	An associate of the Company and also a subsidiary of Huaneng Group
Tiancheng Financial Leasing	An associate of the Company and also a subsidiary of Huaneng Group
Huaneng Shidao Bay Nuclear Power Development Co., Ltd.	An associate of the Company and also a subsidiary of Huaneng Group
Xiapu Nuclear Power Co., Ltd.	An associate of the Company and also a subsidiary of Huaneng Group
Huaneng Finance	An associate of the Company and also a subsidiary of Huaneng Group
Huaneng (Tianjing) Coal Gasification Power Generation Co., Ltd.	An associate of the Company and also a subsidiary of Huaneng Group
Huaneng Group Fuel Company and its subsidiaries	Associates of the Company and also subsidiaries of Huaneng Group
Other government-related enterprises**	Related parties of the Company

Cash deposits in related parties

	As at 31 December
	2017		2016
Deposits in Huaneng Finance
- Savings deposit		7,506,706		5,155,000
Deposits in Great Wall Securities
- Savings deposit		-		2
Total		7,506,706		5,155,002

Balances of accounts receivable, other receivables and assets due from related parties

	As at 31 December
	2017		2016
Due from Huaneng Group		860,941		708
Due from HIPDC		99		-
Due from joint ventures		360,442		806,112
Due from associates		89,083		-
Due from subsidiaries of Huaneng Group		196,621		319,224
Due from Huangtai #8 Power Plant		903,671		-
Total		2,410,857		1,126,044

Balances of accounts payable and other liabilities and other non-current liabilities due to related parties

	As at 31 December
	2017		2016
Due to Huaneng Group		260,306		12,232
Due to HIPDC		16,138		14,183
Due to joint ventures		336,170		325,590
Due to associates		5,751		263,154
Due to subsidiaries of Huaneng Group		4,239,688		4,145,595
Total		4,858,053		4,760,754

Related party transactions, procurement of goods and receiving services

	For the year ended 31 December
	2017		2016		2015
Huaneng Group
Technical services and engineering contracting services		-		-		50
Other purchases		446		451		-
Subsidiaries of Huaneng Group
Purchase of coal and transportation services		19,945,752		17,212,984		16,575,700
Technical services and engineering contracting services		1,024,369		1,055,251		769,176
Purchase of equipment		347,163		483,058		302,387
Purchase of power generation quota		-		195,528		287,779
Other purchases		716		6,472		7,073
Joint ventures of the Company
Purchase of coal and transportation services		2,054,209		2,150,844		1,816,954
Entrusting other parties for power generation		28,953		-		-
An associate of the Company Other purchases		27,732		43,808		44,591

Related party transactions, sales of goods and providing services

	For the year ended 31 December
	2017		2016		2015
Huaneng Group
Service provided		907		-		-
HIPDC
Service provided		520		-		-
Subsidiaries of Huaneng Group
Sales of power generation quota		-		1,165		135,085
Sales of goods		1,114,347		-		-
Other sales		15,247		189,914		40,780
Service provided		25,229		31,135		50,627
Provision of entrusted power generation		58,639		-		-
Joint ventures of the Company
Service provided		319,844		59,049		133,332
Other sales		407,697		9,490		23,003
Other related party
Provision of entrusted power generation		-		-		33,129

Related party transactions, other related party transactions

			For the year ended 31 December
			2017		2016		2015
(1	)	Rental charge on leasehold
		HIPDC		106,885		157,264		161,941
		Subsidiaries of Huaneng Group		141,542		128,932		130,591
		A joint venture of the Company		2,128		-		-
(2	)	Rental income from leasehold
		A joint venture of the Company		7,448		7,750		10,759
		Subsidiaries of Huaneng Group		2,509		5,724		9,115
(3	)	Drawdown of loans
		Subsidiaries of Huaneng Group		15,374,480		4,035,000		2,660,500
		HIPDC		-		210		-
		Huaneng group		665,225		-		-
(4	)	Interest expense on loans
		Huaneng group		33,481		30,514		32,573
		HIPDC		10		13,136		114,687
		Subsidiaries of Huaneng Group		589,012		217,098		158,695
(5	)	Interest income on loans
		A joint venture of the Company		3,329		3,488		4,572
		An associate of the Company		917		-		-
		A Subsidiary of Huaneng Group		4,344		-		-

			For the year ended 31 December
			2017		2016		2015
(6	)	Capital injection from a subsidiary of Huaneng Group
		A subsidiary of Huaneng Group		274,752		-		286,312
(7	)	Capital injection
		A subsidiary of Huaneng Group		-		157,500		683,550
		An associate of the Company		52,200		100,418		206,230
		Joint ventures of the Company		249,716		18,200		-
(8	)	Pre-construction cost paid by
		A subsidiary of Huaneng Group		23,529		765		12,254
		An joint venture of the Company		179		-
(9	)	Finance lease payments received from
		A subsidiary of Huaneng Group		-		2,960,000		100,000
(10	)	Entrusted management fee
		Huaneng Group		13,453		24,950		24,950
(11	)	Trusteeship management income
		Huaneng Group		1,518		1,700		1,700
(12	)	Net proceeds received from investee with significant influence
		Huangtai #8 Power Plant		72,920		-		-
(13	)	Finance lease to investee with significant influence
		Huangtai #8 Power Plant		86,946		-		-
(14	)	Interest income from finance lease
		Huangtai #8 Power Plant		11,626		-		-
(15	)	Acquisition consideration
		In 2017, the Company acquired subsidiaries from Huaneng Group, please refer to Note 40(a) for details of the acquisition consideration.
(16	)	Disposal subsidiaries
		In 2017, the Company disposed Taishan Power Limited Company to a subsidiary of Huaneng Group, please refer to Note 6 for details.

Guarantees

			As at 31 December
			2017		2016
(i	)	Long-term loans guaranteed by
		- Huaneng Group		1,675,147		565,992
		- HIPDC		2,099,600		2,142,000
(ii	)	Long-term bonds guaranteed by
		- HIPDC		4,000,000		4,000,000
		- Government-related banks		-		3,300,000

Pre-tax benefits and social insurance of key management personnel

	For the year ended 31 December
	2017		2016		2015
Salaries		7,676		8,225		9,064
Pension		1,511		1,521		1,470
Total		9,187		9,746		10,534

Related party capital commitments

	As at 31 December
	2017		2016
Subsidiaries of Huaneng Group		290,041		439,571

Related party fuel purchase and transportation commitments

	As at 31 December
	2017		2016
Subsidiaries of Huaneng Group		1,111,649		963,306
A joint venture of the Company		279,408		291,032
Total		1,391,057		1,254,338

Related party operating lease commitments

	As at 31 December
	2017		2016
Subsidiaries of Huaneng Group		171,804		286,340
HIPDC		76,202		65,554
Total		248,006		351,894

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Directors', supervisors' and senior management's emoluments (Tables)

12 Months Ended

Dec. 31, 2017

Directors', supervisors' and senior management's emoluments [abstract]

Pre-tax benefits and social insurance of directors and supervisors

The remuneration of every director and supervisor of the Company for the year ended 31 December 2017 is set out below:

	Fees	Basic salaries	Performance salaries	Pension	Total
Name of director
Mr. Cao Peixi	-	-	-	-	-
Mr. Guo Junming1	-	-	-	-	-
Mr. Liu Guoyue	-	-	-	-	-
Mr. Fan Xiaxia2	-	-	-	-	-
Mr. Li Shiqi3	-	-	-	-	-
Mr. Huang Jian	-	-	-	-	-
Mr. Wang Yongxiang4	-	-	-	-	-
Mr. Mi Dabin	24	-	-	-	24
Mr. Guo Hongbo	-	-	-	-	-
Mr. Zhu Yousheng3	24	-	-	-	24
Ms. Li Song3	24	-	-	-	24
Mr. Cheng Heng4	-	-	-	-	-
Mr. Lin Chong4	-	-	-	-	-
Mr. Li Zhensheng3	37	-	-	-	37
Mr. Yue Heng	74	-	-	-	74
Mr. Geng Jianxin3	37	-	-	-	37
Mr. Xia Qing3	37	-	-	-	37
Mr. Xu Mengzhou	74	-	-	-	74
Mr. Liu Jizhen4	37	-	-	-	37
Mr. Xu Haifeng4	37	-	-	-	37
Mr. Zhang Xianzhi4	37	-	-	-	37
Sub-total	442	-	-	-	442
Name of supervisor
Mr. Ye Xiangdong	-	-	-	-	-
Mr. Mu Xuan	24	-	-	-	24
Ms. Zhang Mengjiao	-	-	-	-	-
Mr. Gu Jianguo	24	-	-	-	24
Ms. Zhang Xiaojun	-	137	466	124	727
Mr. Zhu Daqing	-	135	464	123	722
Sub-total	48	272	930	247	1,497
Total	490	272	930	247	1,939

The remuneration of every director and supervisor of the Company for the year ended 31 December 2016 is set out below:

	Fees	Basic salaries	Performance salaries	Pension	Total
Name of director
Mr. Cao Peixi	-	-	-	-	-
Mr. Guo Junming	-	-	-	-	-
Mr. Liu Guoyue	-	-	-	-	-
Mr. Li Shiqi	-	-	-	-	-
Mr. Huang Jian	-	-	-	-	-
Mr. Fan Xiaxia	-	327	396	122	845
Mr. Mi Dabin	48	-	-	-	48
Mr. Guo Hongbo	-	-	-	-	-
Mr. Zhu Yousheng	48	-	-	-	48
Ms. Li Song	48	-	-	-	48
Mr. Li Zhensheng	74	-	-	-	74
Mr. Zhang Shouwen	37	-	-	-	37
Mr. Yue Heng	74	-	-	-	74
Mr. Geng Jianxin	74	-	-	-	74
Mr. Xia Qing	74	-	-	-	74
Mr. Xu Mengzhou	37	-	-	-	37
Sub-total	514	327	396	122	1,359
Name of supervisor
Mr. Ye Xiangdong	-	-	-	-	-
Mr. Mu Xuan	48	-	-	-	48
Ms. Zhang Mengjiao	-	-	-	-	-
Mr. Gu Jianguo	48	-	-	-	48
Mr. Wang Zhaobin	-	51	-	-	51
Ms. Zhang Ling	-	69	-	-	69
Ms. Zhang Xiaojun	-	92	314	89	495
Mr. Zhu Daqing	-	90	313	88	491
Sub-total	96	302	627	177	1,202
Total	610	629	1,023	299	2,561

The remuneration of every director and supervisor of the Company for the year ended 31 December 2015 is set out below:

	Fees	Basic salaries	Performance salaries	Pension	Total
Name of director
Mr. Cao Peixi	-	-	-	-	-
Mr. Guo Junming	-	-	-	-	-
Mr. Liu Guoyue	-	143	663	123	929
Mr. Li Shiqi	-	-	-	-	-
Mr. Huang Jian	-	-	-	-	-
Mr. Fan Xiaxia	-	356	494	131	981
Mr. Mi Dabin	65	-	-	-	65
Mr. Guo Hongbo	12	-	-	-	12
Mr. Zhu Yousheng	24	-	-	-	24
Mr. Xu Zujian	24	-	-	-	24
Ms. Li Song	65	-	-	-	65
Mr. Li Zhensheng	74	-	-	-	74
Mr. Qi Yudong	6	-	-	-	6
Mr. Zhang Shouwen	74	-	-	-	74
Mr. Yue Heng	100	-	-	-	100
Ms. Zhang Lizi	30	-	-	-	30
Mr. Geng Jianxin	37	-	-	-	37
Mr. Xia Qing	37	-	-	-	37
Sub-total	548	499	1,157	254	2,458
Name of supervisor
Mr. Ye Xiangdong	-	-	-	-	-
Mr. Mu Xuan	65	-	-	-	65
Ms. Zhang Mengjiao	-	-	-	-	-
Mr. Gu Jianguo	49	-	-	-	49
Mr. Wang Zhaobin	-	298	385	103	786
Ms. Zhang Ling	-	133	263	53	449
Sub-total	114	431	648	156	1,349
Total	662	930	1,805	410	3,807

Five highest paid individuals

	As at 31 December
	2017		2016		2015
Basic salaries		1,524		1,213		910
Performance salaries		1,800		1,440		1,260
Pension		648		502		365
		3,972		3,155		2,535

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Commitments (Tables)

12 Months Ended

Dec. 31, 2017

Commitments [abstract]

Capital commitments

	As at 31 December
	2017		2016
Contracted but not provided		16,985,439		18,603,559

Total future minimum lease payments under non-cancelable operating leases

	As at 31 December
	2017		2016
Land and buildings
- not later than 1 year		196,870		181,441
- later than 1 year and not later than 2 years		118,272		144,088
- later than 2 years and not later than 5 years		143,628		133,984
- later than 5 years		1,028,014		970,896
Total		1,486,784		1,430,409

Fuel purchase commitments

			As at 31 December 2017
	Periods		Purchase quantities	Estimated unit costs (RMB)
A government-related enterprise		2018-2039	2.8 million m3/day*		2.21/ m	3
A government-related enterprise		2018-2023	541 million m3/year*		2.06/ m	3
		2018-2023	450 million m3/year*		2.06/ m	3
		2018-2023	541 million m3/year*		2.10/ m	3
		2018-2023	450 million m3/year*		2.27/ m	3
A government-related enterprise		2018-2026	200 million m3/year*		2.38/ m	3
Other suppliers		2018-2019	243 BBtu**/day	approximately 67,000/BBtu
		2020-2021	242 BBtu**/day	approximately 67,000/BBtu
		2022	248 BBtu**/day	approximately 67,000/BBtu
		2023	247.5~256.6BBtu**/day	approximately 67,000/BBtu
		2024-2028	49.9-81.5BBtu**/day	approximately 69,000/BBtu
			As at 31 December 2016
	Periods		Purchase quantities	Estimated unit costs (RMB)
A government-related enterprise		2017-2039	2.8 million m3/day*		2.31/ m	3
A government-related enterprise		2017-2023	541 million m3/year*		2.16/ m	3
		2017-2023	450 million m3/year*		2.16/ m	3
Other suppliers		2017-2022	248BBtu**/day	approximately 63,000/BBtu
		2023	247.5-256.6BBtu**/day	approximately 63,000/BBtu
		2024-2028	49.9-59.0BBtu**/day	approximately 70,000/BBtu

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Business combinations (Tables)

12 Months Ended

Dec. 31, 2017

Business combinations [abstract]

Consideration for acquisition from Huaneng Group

	Acquisition Date
Total consideration		15,500,770
Non-controlling interests		6,292,577
Fair value of pre-existing interest in a subsidiary of Shandong Power		690,967
Less: Fair value of total identifiable net assets		19,316,748
Goodwill		3,167,566
Total consideration		15,500,770
Less: Net settlement of the receivables due from Huaneng Group		2,361,871
Bank balances and cash of acquirees		2,342,766
Less: Restricted cash		(20,974	)
Cash consideration paid for acquisition of subsidiaries, net of cash acquired		10,817,107

Assets and liabilities arising from the acquisitions from Huaneng Group

	Shandong Power (consolidated) Fair value	Jilin Power (consolidated) Fair value	Heilongjiang Power (consolidated) Fair value	Zhongyuan Gas Fair value
Property, plant and equipment	41,366,757	8,496,028	12,525,071	1,381,060
Investment in associates and joint ventures	1,021,566	-	-	-
Available-for-sale financial assets	4,000	100,895	-	-
Land use rights	2,272,181	228,173	655,485	27,075
Deferred income tax assets	334,055	323,522	10,404	-
Other non-current assets	1,285,838	213,589	210,965	48
Bank balances and cash	1,621,276	103,045	385,295	222,939
Inventories	952,510	89,333	123,889	1,136
Trade receivables	2,509,641	293,455	127,219	124,636
Other receivables and other current assets	2,992,094	2,393,835	889,392	119,974
Long-term borrowings	(15,647,367)	(8,330,929)	(6,742,580)	(1,200,000)
Deferred income tax liabilities	(2,447,672)	(214,642)	(280,945)	(47,235)
Other non-current liabilities	(1,688,306)	(10,291)	(253,671)	-
Short-term borrowings	(8,082,200)	(600,000)	(1,920,000)	-
Tax payables	(270,531)	(10,311)	(54,302)	(419)
Dividends payables	(136,955)	-	-	-
Salary and welfare payables	(41,667)	(2,969)	(22,462)	(717)
Payables and other liabilities	(9,725,591)	(2,668,626)	(3,083,130)	(606,115)
Total identifiable net assets	16,319,629	404,107	2,570,630	22,382

Acquisition information of transfers from joint ventures to subsidiaries

	Acquisition Date
Non-controlling interests		10
Fair value of pre-existing interest in Shanxi Xiaoyi Energy		10,200
Less: Fair value of total identifiable net assets		10,210
Goodwill		-

Financial information of acquirees from acquisition due to transfers from joint ventures to subsidiaries

	From acquisition date to 31 December 2017 acquiree's
	Revenue		Net Profit
Shanxi Xiaoyi Energy		704		228

Identifiable assets and liabilities of acquirees as at the acquisition date due to transfers from joint ventures to subsidiaries

	Fair Value
Bank balances and cash		10,211
Accounts payable and other liabilities		(1	)
Total identifiable net assets		10,210

Consideration for acquisition of Ruzhou Xuji Wind Power Generation Co., Ltd.

	Acquisition Date
Consideration		4,000
Less: Fair value of total identifiable net assets		4,000
Goodwill		-

Financial information of acquirees from acquisition not under common control

	From acquisition date to 31 December 2017 acquiree's
	Revenue		Net Profit
Xuji Wind Power		-		-

Identifiable assets and liabilities of acquirees as at the acquisition date not under common control

	Fair Value
Other receivables and assets		16,080
Property, plant and equipment		11,893
Accounts payable and other liabilities		(23,973	)
Total identifiable net assets		4,000

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Non-controlling interests (Tables)

12 Months Ended

Dec. 31, 2017

Non-controlling interests [abstract]

Information relating to each of the Company and subsidiaries that have material non-controlling interests ("NCI")

	Qinbei Power			Beijing Cogeneration			Luohuang Power			Weihai Power			Jinling Power			Yueyang Power			Shidongkou Power			Yangliuqing Cogeneration			Shandong Power			Other individually immaterial subsidiaries			Total
NCI percentage		40%			59%			40%			40%			40%			45%			50%			45%			20%
31 December 2017
Non-current assets		10,553,775			6,841,918			4,055,507			4,664,868			5,049,079			4,875,004			3,712,623			2,541,803			47,665,952
Current assets		1,738,000			1,257,485			887,225			633,012			494,312			987,812			494,073			497,441			6,891,086
Non-current liabilities		(3,053,535	)		(394,590	)		(242,944	)		(81,048	)		(1,541,444	)		(1,042,093	)		(731,640	)		(205,205	)		(19,681,891	)
Current liabilities		(5,821,543	)		(2,501,516	)		(2,064,897	)		(2,462,363	)		(1,854,441	)		(2,590,470	)		(1,919,701	)		(869,071	)		(18,695,005	)
Net assets		3,416,697			5,203,297			2,634,891			2,754,469			2,147,506			2,230,253			1,555,355			1,964,968			16,180,142
Carrying amount of NCI		1,380,594			3,050,283			1,032,938			1,101,787			859,024			1,019,016			777,678			883,340			4,697,283			5,171,095			19,973,038
Revenue		4,587,612			4,262,547			2,303,079			3,421,115			3,423,688			3,149,190			2,117,052			2,010,872			22,566,737
Net (loss)/profit		(169,261	)		541,602			(60,758	)		324,335			269,949			47,224			164,557			121,853			(800,622	)
Total comprehensive (loss)/income		(169,261	)		541,602			(60,758	)		324,335			269,949			47,224			164,557			121,853			(943,860	)
(Loss)/profit allocated to NCI		(67,704	)		319,545			(24,303	)		129,734			107,980			21,251			82,278			54,834			(287,923	)		(331,321	)		4,371
Other comprehensive (loss)/income allocated to NCI		-			-			-			-			-			-			-			-			(28,648	)		152			(28,496	)
Cash flow from operating activities		970,585			1,071,888			195,282			681,568			731,714			426,437			311,668			334,842			3,848,712
Cash flow from investment activities		(252,441	)		(1,190,093	)		(383,004	)		(231,142	)		(47,518	)		(242,288	)		(93,434	)		(64,179	)		(3,967,060	)
Cash flow from financing activities		(613,010	)		70,299			156,483			(405,196	)		(680,226	)		(191,231	)		(384,317	)		(288,299	)		(282,625	)
Net increase/ (decrease) in cash and cash equivalents		105,134			(49,605	)		(31,239	)		45,230			3,970			(7,082	)		(166,083	)		(17,586	)		(402,950	)
Dividends paid to NCI		150,000			532,966			-			160,000			179,023			65,675			133,700			71,103			220,321

	Qinbei Power			Beijing Cogeneration			Luohuang Power			Weihai Power			Jinling Power			Yueyang Power			Shidongkou Power			Yangliuqing Cogeneration			Other individually immaterial subsidiaries		Total
NCI percentage		40%			59%			40%			40%			40%			45%			50%			45%
31 December 2016
Non-current assets		11,210,604			5,821,110			3,966,880			4,988,112			5,426,759			4,958,325			3,917,340			2,654,085
Current assets		1,472,192			1,041,957			864,069			508,493			649,446			826,089			380,641			563,023
Non-current liabilities		(2,206,586	)		(152,911	)		(284,064	)		(104,952	)		(1,773,332	)		(1,150,021	)		(1,055,640	)		(224,373	)
Current liabilities		(6,475,340	)		(1,665,750	)		(1,601,236	)		(2,504,410	)		(1,835,090	)		(1,828,581	)		(1,584,142	)		(991,614	)
Net assets		4,000,870			5,044,406			2,945,649			2,887,243			2,467,783			2,805,812			1,658,199			2,001,121
Carrying amount of NCI		1,614,264			2,928,015			1,157,242			1,154,897			987,135			1,260,591			829,099			899,609			5,352,890		16,183,742
Revenue		5,006,349			4,476,729			2,436,586			3,217,209			3,734,108			2,716,817			1,915,915			1,773,869
Net profit		457,311			788,899			122,508			507,900			655,568			243,913			297,211			177,447
Total comprehensive income		457,311			788,899			122,508			507,900			655,568			243,913			297,211			177,447
Profit allocated to NCI		182,924			465,450			49,003			203,160			262,227			109,761			148,606			79,851			326,578		1,827,560
Other comprehensive income allocated to NCI		-			-			-			-			-			-			-			-			484		484
Cash flow from operating activities		1,400,042			973,352			550,346			1,045,828			1,293,565			568,379			890,615			295,547
Cash flow from investment activities		(312,604	)		(540,151	)		(189,599	)		(273,117	)		(37,274	)		(62,622	)		(258,892	)		(197,600	)
Cash flow from financing activities		(1,247,836	)		(344,718	)		(319,643	)		(786,471	)		(1,255,955	)		(521,249	)		(462,075	)		(58,293	)
Net (decrease)/increase in cash and cash equivalents		(160,398	)		88,518			41,104			(13,760	)		336			(15,492	)		169,648			39,616
Dividends paid to NCI		433,090			687,679			120,000			366,983			308,923			-			273,900			128,857

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Principal accounting policies (Basis of preparation) (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Principal accounting policies [abstract]
Net current liabilities	¥ 107,413	¥ 93,230
Expected operating cash flows and the undrawn available banking facilities	¥ 241,900

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Principal accounting policies (Property, plant and equipment) (Detail)	12 Months Ended
	Dec. 31, 2017
Dam [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives of property plant and equipment	8 - 50 years
Port facilities [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives of property plant and equipment	20 - 40 years
Buildings [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives of property plant and equipment	8 - 30 years
Electric utility plant in service [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives of property plant and equipment	5 - 30 years
Transportation facilities [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives of property plant and equipment	8 - 27 years
Others [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives of property plant and equipment	5 - 14 years

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Principal accounting policies (Taxation) (Detail)	6 Months Ended		12 Months Ended
	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2017
Sales of power [member] | PRC [member]
Taxation [line items]
Tax rate of VAT			17.00%
Sales of power [member] | Singapore [member]
Taxation [line items]
Tax rate of goods and service tax			7.00%
Sales of heat [member] | PRC [member]
Taxation [line items]
Tax rate of VAT	11.00%	13.00%
Sales of goods [member] | PRC [member]
Taxation [line items]
Tax rate of VAT			17.00%
Lease of tangible movable properties [member] | PRC [member]
Taxation [line items]
Tax rate of VAT			17.00%
Transportation industry [member] | PRC [member]
Taxation [line items]
Tax rate of VAT			11.00%
Other modern services industry [member] | PRC [member]
Taxation [line items]
Tax rate of VAT			6.00%
Construction services [member] | PRC [member]
Taxation [line items]
Tax rate of VAT			11.00%
Lease of immovables [member] | PRC [member]
Taxation [line items]
Tax rate of VAT			11.00%
Sale of immovables [member] | PRC [member]
Taxation [line items]
Tax rate of VAT			11.00%
Transfer of land use rights [member] | PRC [member]
Taxation [line items]
Tax rate of VAT			11.00%
Financial services [member] | PRC [member]
Taxation [line items]
Tax rate of VAT			6.00%
Living services [member] | PRC [member]
Taxation [line items]
Tax rate of VAT			6.00%

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Principal accounting policies (Standards and amendments to published standards that are not yet effective but relevant to Company and its subsidiaries) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Principal accounting policies [abstract]
Minimum proportion of the Company and its subsidiaries' revenue comprised of contracts with customers from rate-regulated sales of power and heat	95.00%
Future minimum lease payments under non-cancellable operating leases	¥ 1,486,784	¥ 1,430,409

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Financial and capital risks management (Foreign exchange risk) (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Presented currency weakened by 5% against foreign currency [member] | Presented currency RMB to foreign currency USD [member]
Financial and capital risks management [line items]
Adjusted amount of exchange gain/loss to be further recognized	¥ (112)	¥ (142)
Presented currency strengthened by 5% against foreign currency [member] | Presented currency RMB to foreign currency USD [member]
Financial and capital risks management [line items]
Adjusted amount of exchange gain/loss to be further recognized	112	142
Presented currency weakened by 3% against foreign currency [member] | Presented currency RMB to foreign currency EUR [member]
Financial and capital risks management [line items]
Adjusted amount of exchange gain/loss to be further recognized	(7)	(9)
Presented currency strengthened by 3% against foreign currency [member] | Presented currency RMB to foreign currency EUR [member]
Financial and capital risks management [line items]
Adjusted amount of exchange gain/loss to be further recognized	7	9
Presented currency weakened by 10% against foreign currency [member] | Presented currency SGD to foreign currency USD [member]
Financial and capital risks management [line items]
Adjusted amount of exchange gain/loss to be further recognized	30	(10)
Presented currency strengthened by 10% against foreign currency [member] | Presented currency SGD to foreign currency USD [member]
Financial and capital risks management [line items]
Adjusted amount of exchange gain/loss to be further recognized	¥ (30)	¥ 10

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Financial and capital risks management (Cash flow interest rate risk) (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
50 basis points higher of interest rates on borrowings [member] | RMB [member]
Financial and capital risks management [line items]
Interest expense for the year higher/lower	¥ 789	¥ 520
50 basis points higher of interest rates on borrowings [member] | US$ [member]
Financial and capital risks management [line items]
Interest expense for the year higher/lower	6	7
50 basis points lower of interest rates on borrowings [member] | RMB [member]
Financial and capital risks management [line items]
Interest expense for the year higher/lower	(789)	(520)
50 basis points lower of interest rates on borrowings [member] | US$ [member]
Financial and capital risks management [line items]
Interest expense for the year higher/lower	(6)	(7)
100 basis points higher of interest rates on borrowings [member] | S$ [member]
Financial and capital risks management [line items]
Interest expense for the year higher/lower	72	59
100 basis points lower of interest rates on borrowings [member] | S$ [member]
Financial and capital risks management [line items]
Interest expense for the year higher/lower	¥ (72)	¥ (59)

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Financial and capital risks management (Credit risk) (Detail) - Singapore segment [member] ¥ in Thousands	12 Months Ended
	Dec. 31, 2017 CNY (¥) kWh	Dec. 31, 2016 CNY (¥)
Financial and capital risks management [line items]
Minimum monthly consumption of electricity of retail customer | kWh	2,000
Cash deposits held by Singapore subsidiaries | ¥	¥ 161,370	¥ 175,860

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Financial and capital risks management (Fair value measurements) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Financial and capital risks management [line items]
Assets	¥ 396,589,511	¥ 314,839,739	[1]
Liabilities	288,974,907	212,653,002	[1]
At fair value [member]
Financial and capital risks management [line items]
Assets	1,202,462	2,199,036
Liabilities	210,664	334,738
At fair value [member] | Financial liabilities at fair value through profit or loss, Trading derivatives (Note 14) [member]
Financial and capital risks management [line items]
Liabilities	125	619
At fair value [member] | Derivatives used for hedging (Note 14) [member]
Financial and capital risks management [line items]
Liabilities	210,539	334,119
At fair value [member] | Financial assets at fair value through profit or loss, Trading derivatives (Note 14) [member]
Financial and capital risks management [line items]
Assets	2,726	5,881
At fair value [member] | Financial assets at fair value through profit or loss, Contingent consideration (Note 40) [member]
Financial and capital risks management [line items]
Assets	859,547
At fair value [member] | Derivatives used for hedging (Note 14) [member]
Financial and capital risks management [line items]
Assets	330,966	372,442
At fair value [member] | Available-for-sale financial assets, Equity securities (Note 10) [member]
Financial and capital risks management [line items]
Assets	9,223	1,820,713
At fair value [member] | Level 1 [member]
Financial and capital risks management [line items]
Assets	9,223	1,820,713
Liabilities	0	0
At fair value [member] | Level 1 [member] | Financial liabilities at fair value through profit or loss, Trading derivatives (Note 14) [member]
Financial and capital risks management [line items]
Liabilities	0	0
At fair value [member] | Level 1 [member] | Derivatives used for hedging (Note 14) [member]
Financial and capital risks management [line items]
Liabilities	0	0
At fair value [member] | Level 1 [member] | Financial assets at fair value through profit or loss, Trading derivatives (Note 14) [member]
Financial and capital risks management [line items]
Assets	0	0
At fair value [member] | Level 1 [member] | Financial assets at fair value through profit or loss, Contingent consideration (Note 40) [member]
Financial and capital risks management [line items]
Assets	0
At fair value [member] | Level 1 [member] | Derivatives used for hedging (Note 14) [member]
Financial and capital risks management [line items]
Assets	0	0
At fair value [member] | Level 1 [member] | Available-for-sale financial assets, Equity securities (Note 10) [member]
Financial and capital risks management [line items]
Assets	9,223	1,820,713
At fair value [member] | Level 2 [member]
Financial and capital risks management [line items]
Assets	333,692	378,323
Liabilities	210,664	334,738
At fair value [member] | Level 2 [member] | Financial liabilities at fair value through profit or loss, Trading derivatives (Note 14) [member]
Financial and capital risks management [line items]
Liabilities	125	619
At fair value [member] | Level 2 [member] | Derivatives used for hedging (Note 14) [member]
Financial and capital risks management [line items]
Liabilities	210,539	334,119
At fair value [member] | Level 2 [member] | Financial assets at fair value through profit or loss, Trading derivatives (Note 14) [member]
Financial and capital risks management [line items]
Assets	2,726	5,881
At fair value [member] | Level 2 [member] | Financial assets at fair value through profit or loss, Contingent consideration (Note 40) [member]
Financial and capital risks management [line items]
Assets	0
At fair value [member] | Level 2 [member] | Derivatives used for hedging (Note 14) [member]
Financial and capital risks management [line items]
Assets	330,966	372,442
At fair value [member] | Level 2 [member] | Available-for-sale financial assets, Equity securities (Note 10) [member]
Financial and capital risks management [line items]
Assets	0	0
At fair value [member] | Level 3 [member]
Financial and capital risks management [line items]
Assets	859,547	0
Liabilities	0	0
At fair value [member] | Level 3 [member] | Financial liabilities at fair value through profit or loss, Trading derivatives (Note 14) [member]
Financial and capital risks management [line items]
Liabilities	0	0
At fair value [member] | Level 3 [member] | Derivatives used for hedging (Note 14) [member]
Financial and capital risks management [line items]
Liabilities	0	0
At fair value [member] | Level 3 [member] | Financial assets at fair value through profit or loss, Trading derivatives (Note 14) [member]
Financial and capital risks management [line items]
Assets	0	0
At fair value [member] | Level 3 [member] | Financial assets at fair value through profit or loss, Contingent consideration (Note 40) [member]
Financial and capital risks management [line items]
Assets	859,547	0
At fair value [member] | Level 3 [member] | Derivatives used for hedging (Note 14) [member]
Financial and capital risks management [line items]
Assets	0	0
At fair value [member] | Level 3 [member] | Available-for-sale financial assets, Equity securities (Note 10) [member]
Financial and capital risks management [line items]
Assets	¥ 0	¥ 0

[1] Restated. The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

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Financial and capital risks management (Transfer between levels of fair value hierarchy) (Detail)	12 Months Ended
	Dec. 31, 2017 CNY (¥)
Financial and capital risks management [abstract]
Transfers out of Level 1 into Level 2 of fair value hierarchy, assets held at end of reporting period	¥ 0
Transfers out of Level 2 into Level 1 of fair value hierarchy, assets held at end of reporting period	0
Transfers into Level 3 of fair value hierarchy, assets	0
Transfers out of Level 3 of fair value hierarchy, assets	0
Transfers out of Level 1 into Level 2 of fair value hierarchy, liabilities held at end of reporting period	0
Transfers out of Level 2 into Level 1 of fair value hierarchy, liabilities held at end of reporting period	0
Transfers into Level 3 of fair value hierarchy, liabilities	0
Transfers out of Level 3 of fair value hierarchy, liabilities	¥ 0

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Financial and capital risks management (Movements of Level 3 fair value measurements) (Detail) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017 CNY (¥)
Financial and capital risks management [line items]
Beginning of the year	¥ 314,839,739	[1]
Movement:
End of the year	396,589,511
At fair value [member]
Financial and capital risks management [line items]
Beginning of the year	2,199,036
Movement:
End of the year	1,202,462
At fair value [member] | Contingent consideration [member]
Movement:
End of the year	859,547
At fair value [member] | Level 3 [member]
Financial and capital risks management [line items]
Beginning of the year	0
Movement:
End of the year	859,547
At fair value [member] | Level 3 [member] | Contingent consideration [member]
Financial and capital risks management [line items]
Beginning of the year	0
Movement:
Gains on fair value changes	859,547
End of the year	859,547
Total gains for the period included in profit or loss for assets held at the end of the reporting period	¥ 859,547

[1] Restated. The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

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Financial and capital risks management (Fair value disclosures) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Financial and capital risks management [line items]
Liabilities	¥ 288,974,907	¥ 212,653,002	[1]
Long-term loans [member]
Financial and capital risks management [line items]
Liabilities	125,130,000	74,550,000
Long-term bonds [member]
Financial and capital risks management [line items]
Liabilities	19,990,000	15,480,000
At fair value [member]
Financial and capital risks management [line items]
Liabilities	210,664	334,738
At fair value [member] | Long-term loans [member]
Financial and capital risks management [line items]
Liabilities	125,000,000	74,480,000
At fair value [member] | Long-term bonds [member]
Financial and capital risks management [line items]
Liabilities	¥ 19,810,000	¥ 15,710,000

[1] Restated. The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

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Financial and capital risks management (Capital risk management) (Detail)	Dec. 31, 2017	Dec. 31, 2016
Financial and capital risks management [abstract]
Debt ratio of the Company and its subsidiaries	72.86%	67.54%

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Critical accounting estimates and judgments (Detail) ¥ in Millions	12 Months Ended
	Dec. 31, 2017 CNY (¥)
Decrease 1% from management's estimates of tariff [member]
Disclosure of changes in accounting estimates [line items]
Impairment against goodwill to be recognized by the Company and its subsidiaries	¥ 681
Impairment against property, plant and equipment and land use rights to be recognized by the Company and its subsidiaries	165
Decrease 5% from management's estimates of tariff [member]
Disclosure of changes in accounting estimates [line items]
Impairment against goodwill to be recognized by the Company and its subsidiaries	3,879
Impairment against property, plant and equipment and land use rights to be recognized by the Company and its subsidiaries	1,165
Increase 1% from management's estimates of fuel price [member]
Disclosure of changes in accounting estimates [line items]
Impairment against goodwill to be recognized by the Company and its subsidiaries	320
Impairment against property, plant and equipment, land use rights and mining rights to be recognized by the Company and its subsidiaries	45
Increase 5% from management's estimates of fuel price [member]
Disclosure of changes in accounting estimates [line items]
Impairment against goodwill to be recognized by the Company and its subsidiaries	2,535
Impairment against property, plant and equipment, land use rights and mining rights to be recognized by the Company and its subsidiaries	¥ 478

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Revenue and segment information (Revenues recognized during year) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015
Revenue and segment information [abstract]
Sales of power and heat	¥ 148,925,442	¥ 112,794,536		¥ 127,849,408
Sales of coal	1,143,299	2,909		6,839
Port service	232,360	237,347		211,685
Transportation service	73,830	105,505		104,721
Others	2,084,513	673,939		732,220
Total revenue	¥ 152,459,444	¥ 113,814,236	[1]	¥ 128,904,873	[1]

[1] Restated. The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

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Revenue and segment information (Revenue information under PRC GAAP) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015
Disclosure of operating segments [line items]
Revenue	¥ 152,459,444	¥ 113,814,236	[1]	¥ 128,904,873	[1]
Segment results	2,801,733	13,813,138	[1]	22,958,050	[1]
Interest income	198,906	147,063		160,723
Interest expense	(9,749,004)	(6,817,526)	[1]	(7,945,734)	[1]
Impairment (loss) /reversal	(1,187,212)	(1,204,958)	[1]	(3,090,153)	[1]
Depreciation and amortization	(20,635,833)	(15,162,715)	[1]	(14,717,613)	[1]
Net (loss) /gain on disposal of non-current assets	(616,456)	(590,049)	[1]	(438,321)	[1]
Share of profits less losses of associates and joint ventures	425,215	1,298,889	[1]	1,525,975	[1]
Income tax expense	(1,217,526)	(3,465,151)	[1]	(5,698,943)	[1]
PRC GAAP [member] | From external customers [member]
Disclosure of operating segments [line items]
Revenue	152,459,444	138,150,296	[1]	154,145,268	[1]
Segment results	2,141,806	17,312,598	[1]	26,927,070	[1]
Interest income	198,906	172,560	[1]	182,777	[1]
Interest expense	(9,622,104)	(8,571,728)	[1]	(10,141,649)	[1]
Impairment (loss) /reversal	(1,188,487)	(1,418,309)	[1]	(3,288,757)	[1]
Depreciation and amortization	(19,128,042)	(18,302,672)	[1]	(17,736,976)	[1]
Net (loss) /gain on disposal of non-current assets	(581,343)	(707,566)	[1]	(495,371)	[1]
Share of profits less losses of associates and joint ventures	300,605	1,047,397	[1]	1,265,540	[1]
Income tax expense	(1,573,470)	(4,508,967)	[1]	(6,852,038)	[1]
PRC GAAP [member] | Total [member]
Disclosure of operating segments [line items]
Revenue	152,840,065	138,495,162	[1]	154,411,969	[1]
PRC GAAP [member] | Inter-segment [member]
Disclosure of operating segments [line items]
Revenue	(380,621)	(344,866)	[1]	(266,701)	[1]
PRC power segment [member] | PRC GAAP [member] | From external customers [member]
Disclosure of operating segments [line items]
Revenue	142,067,629	129,101,375	[1]	143,679,910	[1]
Segment results	2,417,073	17,633,734	[1]	27,473,279	[1]
Interest income	126,927	102,265	[1]	115,378	[1]
Interest expense	(9,026,064)	(7,952,640)	[1]	(9,526,290)	[1]
Impairment (loss) /reversal	(1,167,751)	(1,410,733)	[1]	(3,112,370)	[1]
Depreciation and amortization	(18,081,299)	(17,320,753)	[1]	(16,719,037)	[1]
Net (loss) /gain on disposal of non-current assets	(580,345)	(693,091)	[1]	(517,820)	[1]
Share of profits less losses of associates and joint ventures	(7,318)	973,982	[1]	1,247,293	[1]
Income tax expense	(1,667,234)	(4,610,591)	[1]	(7,121,207)	[1]
PRC power segment [member] | PRC GAAP [member] | Total [member]
Disclosure of operating segments [line items]
Revenue	142,067,629	129,101,375	[1]	143,679,910	[1]
PRC power segment [member] | PRC GAAP [member] | Inter-segment [member]
Disclosure of operating segments [line items]
Revenue	0	0	[1]	0	[1]
Singapore segment [member] | PRC GAAP [member] | From external customers [member]
Disclosure of operating segments [line items]
Revenue	10,078,031	8,758,822	[1]	10,143,793	[1]
Segment results	(577,458)	(282,703)	[1]	(313,253)	[1]
Interest income	70,756	69,672	[1]	66,898	[1]
Interest expense	(450,928)	(481,263)	[1]	(452,034)	[1]
Impairment (loss) /reversal	(994)	899	[1]	1,744	[1]
Depreciation and amortization	(856,979)	(778,426)	[1]	(772,003)	[1]
Net (loss) /gain on disposal of non-current assets	(995)	(172)	[1]	22,450	[1]
Share of profits less losses of associates and joint ventures	0	0	[1]	0	[1]
Income tax expense	99,150	44,135	[1]	254,772	[1]
Singapore segment [member] | PRC GAAP [member] | Total [member]
Disclosure of operating segments [line items]
Revenue	10,078,031	8,758,822	[1]	10,143,793	[1]
Singapore segment [member] | PRC GAAP [member] | Inter-segment [member]
Disclosure of operating segments [line items]
Revenue	0	0	[1]	0	[1]
All other segments [member] | PRC GAAP [member] | From external customers [member]
Disclosure of operating segments [line items]
Revenue	313,784	290,099	[1]	321,565	[1]
Segment results	302,191	(38,433)	[1]	(232,956)	[1]
Interest income	1,223	623	[1]	501	[1]
Interest expense	(145,112)	(137,825)	[1]	(163,325)	[1]
Impairment (loss) /reversal	(19,742)	(8,475)	[1]	(178,131)	[1]
Depreciation and amortization	(189,764)	(203,493)	[1]	(245,936)	[1]
Net (loss) /gain on disposal of non-current assets	(3)	(14,303)	[1]	(1)	[1]
Share of profits less losses of associates and joint ventures	307,923	73,415	[1]	18,247	[1]
Income tax expense	(5,386)	57,489	[1]	14,397	[1]
All other segments [member] | PRC GAAP [member] | Total [member]
Disclosure of operating segments [line items]
Revenue	694,405	634,965	[1]	588,266	[1]
All other segments [member] | PRC GAAP [member] | Inter-segment [member]
Disclosure of operating segments [line items]
Revenue	¥ (380,621)	¥ (344,866)	[1]	¥ (266,701)	[1]

[1] Restated. The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

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Revenue and segment information (Assets and liabilities information under PRC GAAP) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	[1]
Disclosure of operating segments [line items]
Segment assets	¥ 396,589,511	¥ 314,839,739
Including:
Segment liabilities	(288,974,907)	(212,653,002)
PRC GAAP [member] | Reportable segment total [member]
Disclosure of operating segments [line items]
Segment assets	372,175,669	371,871,180
Including:
Additions to non-current assets (excluding financial assets and deferred income tax assets)	25,035,959	28,515,663
Investments in associates	15,497,696	15,408,079
Investments in joint ventures	2,482,781	2,992,612
Segment liabilities	(281,142,558)	(265,848,676)
PRC power segment [member] | PRC GAAP [member] | Reportable segment total [member]
Disclosure of operating segments [line items]
Segment assets	334,379,104	331,939,958
Including:
Additions to non-current assets (excluding financial assets and deferred income tax assets)	24,447,658	27,430,205
Investments in associates	12,577,836	12,527,711
Investments in joint ventures	1,457,247	2,202,002
Segment liabilities	(264,115,887)	(246,200,555)
Singapore segment [member] | PRC GAAP [member] | Reportable segment total [member]
Disclosure of operating segments [line items]
Segment assets	27,817,680	28,141,718
Including:
Additions to non-current assets (excluding financial assets and deferred income tax assets)	260,240	230,974
Investments in associates	0	0
Investments in joint ventures	0	0
Segment liabilities	(14,000,442)	(14,027,606)
All other segments [member] | PRC GAAP [member] | Reportable segment total [member]
Disclosure of operating segments [line items]
Segment assets	9,978,885	11,789,504
Including:
Additions to non-current assets (excluding financial assets and deferred income tax assets)	328,061	854,484
Investments in associates	2,919,860	2,880,368
Investments in joint ventures	1,025,534	790,610
Segment liabilities	¥ (3,026,229)	¥ (5,620,515)

[1] Restated. The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

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Revenue and segment information (Reconciliation of revenue from external customers to operating revenue) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	[1]	Dec. 31, 2015	[1]
Reconciliation of revenue from external customers to operating revenue [line items]
Revenue	¥ 152,459,444	¥ 113,814,236		¥ 128,904,873
PRC GAAP [member] | From external customers [member]
Reconciliation of revenue from external customers to operating revenue [line items]
Revenue	152,459,444	138,150,296		154,145,268
Impact of restatement under PRC GAAP in relation to business combination under common control (Note 40) [member]
Reconciliation of revenue from external customers to operating revenue [line items]
Revenue	¥ 0	¥ (24,336,060)		¥ (25,240,395)

[1] Restated. The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

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Revenue and segment information (Reconciliation of segment result to profit before income tax expense) (Detail) - CNY (¥) ¥ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	[1]	Dec. 31, 2015	[1]
Reconciliation of segment result to profit before income tax expense [line items]
Profit before income tax expense		¥ 2,801,733	¥ 13,813,138		¥ 22,958,050
PRC GAAP [member] | Reportable segment total [member]
Reconciliation of segment result to profit before income tax expense [line items]
Profit before income tax expense		2,141,806	17,312,598		26,927,070
PRC GAAP [member] | Loss related to the headquarter [member]
Reconciliation of segment result to profit before income tax expense [line items]
Profit before income tax expense		(170,210)	(699,054)		(327,262)
PRC GAAP [member] | Investment income from China Huaneng Finance Co., Ltd. ("Huaneng Finance") [member]
Reconciliation of segment result to profit before income tax expense [line items]
Profit before income tax expense		143,794	132,018		135,971
PRC GAAP [member] | Dividend income of available-for-sale financial assets [member]
Reconciliation of segment result to profit before income tax expense [line items]
Profit before income tax expense		124,918	105,337		99,071
PRC GAAP [member] | Gains on disposal of available-for-sale financial asset [member]
Reconciliation of segment result to profit before income tax expense [line items]
Profit before income tax expense		1,479,732	932,738		4,282
Impact of restatement under PRC GAAP in relation to business combination under common control (Note 40) [member]
Reconciliation of segment result to profit before income tax expense [line items]
Profit before income tax expense		0	(3,417,300)		(3,454,005)
Impact of other IFRS adjustments [member]
Reconciliation of segment result to profit before income tax expense [line items]
Profit before income tax expense	[2]	¥ (918,307)	¥ (553,199)		¥ (427,077)

[1] Restated. The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

[2] Other GAAP adjustments above primarily represented the classification adjustments and other adjustments. Other than the classification adjustments, the differences will be gradually eliminated following subsequent depreciation and amortization of related assets or the extinguishment of liabilities.

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Revenue and segment information (Reportable segments' assets reconciled to total assets) (Detail) - CNY (¥) ¥ in Thousands		Dec. 31, 2017	Dec. 31, 2016	[1]
Reportable segments' assets [line items]
Segment assets		¥ 396,589,511	¥ 314,839,739
PRC GAAP [member] | Reportable segment total [member]
Reportable segments' assets [line items]
Segment assets		372,175,669	371,871,180
PRC GAAP [member] | Investment in Huaneng Finance [member]
Reportable segments' assets [line items]
Segment assets		1,336,777	1,314,603
PRC GAAP [member] | Deferred income tax assets [member]
Reportable segments' assets [line items]
Segment assets		2,980,303	2,447,648
PRC GAAP [member] | Prepaid income tax [member]
Reportable segments' assets [line items]
Segment assets		150,838	204,182
PRC GAAP [member] | Available-for-sale financial assets [member]
Reportable segments' assets [line items]
Segment assets		1,654,993	3,560,928
PRC GAAP [member] | Corporate assets [member]
Reportable segments' assets [line items]
Segment assets		395,148	360,854
Impact of restatement under PRC GAAP in relation to business combination under common control (Note 40) [member]
Reportable segments' assets [line items]
Segment assets		0	(70,341,769)
Impact of other IFRS adjustments [member]
Reportable segments' assets [line items]
Segment assets	[2]	¥ 17,895,783	¥ 5,422,113

[1] Restated. The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

[2] Other GAAP adjustments above primarily represented the classification adjustments and other adjustments. Other than the classification adjustments, the differences will be gradually eliminated following subsequent depreciation and amortization of related assets or the extinguishment of liabilities.

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Revenue and segment information (Reportable segments' liabilities reconciled to total liabilities) (Detail) - CNY (¥) ¥ in Thousands		Dec. 31, 2017	Dec. 31, 2016	[1]
Reportable segments' liabilities [line items]
Segment liabilities		¥ (288,974,907)	¥ (212,653,002)
PRC GAAP [member] | Reportable segment total [member]
Reportable segments' liabilities [line items]
Segment liabilities		(281,142,558)	(265,848,676)
PRC GAAP [member] | Current income tax liabilities [member]
Reportable segments' liabilities [line items]
Segment liabilities		(430,703)	(572,515)
PRC GAAP [member] | Deferred income tax liabilities [member]
Reportable segments' liabilities [line items]
Segment liabilities		(1,283,950)	(1,429,859)
PRC GAAP [member] | Corporate liabilities [member]
Reportable segments' liabilities [line items]
Segment liabilities		(3,632,847)	(4,717,617)
Impact of restatement under PRC GAAP in relation to business combination under common control (Note 40) [member]
Reportable segments' liabilities [line items]
Segment liabilities		0	59,917,072
Impact of other IFRS adjustments [member]
Reportable segments' liabilities [line items]
Segment liabilities	[2]	¥ (2,484,849)	¥ (1,407)

[1] Restated. The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

[2] Other GAAP adjustments above primarily represented the classification adjustments and other adjustments. Other than the classification adjustments, the differences will be gradually eliminated following subsequent depreciation and amortization of related assets or the extinguishment of liabilities.

XML

Revenue and segment information (Other material items) (Detail) - CNY (¥) ¥ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	[1]	Dec. 31, 2015	[1]
Other material items [line items]
Revenue		¥ 152,459,444	¥ 113,814,236		¥ 128,904,873
Interest expense		(9,749,004)	(6,817,526)		(7,945,734)
Depreciation and amortization		(20,635,833)	(15,162,715)		(14,717,613)
Impairment loss		(1,187,212)	(1,204,958)		(3,090,153)
Share of profits less losses of associates and joint ventures		425,215	1,298,889		1,525,975
Net (loss) /gain on disposal of non-current assets		(616,456)	(590,049)		(438,321)
Income tax expense		(1,217,526)	(3,465,151)		(5,698,943)
PRC GAAP [member] | Reportable segment total [member]
Other material items [line items]
Revenue		152,459,444	138,150,296		154,145,268
Interest expense		(9,622,104)	(8,571,728)		(10,141,649)
Depreciation and amortization		(19,128,042)	(18,302,672)		(17,736,976)
Impairment loss		(1,188,487)	(1,418,309)		(3,288,757)
Share of profits less losses of associates and joint ventures		300,605	1,047,397		1,265,540
Net (loss) /gain on disposal of non-current assets		(581,343)	(707,566)		(495,371)
Income tax expense		(1,573,470)	(4,508,967)		(6,852,038)
PRC GAAP [member] | Headquarters [member]
Other material items [line items]
Revenue		0	0		0
Interest expense		(126,900)	(131,244)		(149,259)
Depreciation and amortization		(38,819)	(48,934)		(60,236)
Impairment loss		0	0		0
Share of profits less losses of associates and joint ventures		0	0		0
Net (loss) /gain on disposal of non-current assets		3,174	(14)		(6)
Income tax expense		0	0		0
PRC GAAP [member] | Investment income from Huaneng Finance [member]
Other material items [line items]
Revenue		0	0		0
Interest expense		0	0		0
Depreciation and amortization		0	0		0
Impairment loss		0	0		0
Share of profits less losses of associates and joint ventures		143,794	132,018		135,971
Net (loss) /gain on disposal of non-current assets		0	0		0
Income tax expense		0	0		0
Impact of restatement under PRC GAAP in relation to business combination under common control [member]
Other material items [line items]
Revenue		0	(24,336,060)		(25,240,395)
Interest expense		0	1,885,446		2,345,174
Depreciation and amortization		0	3,533,820		3,474,072
Impairment loss		0	213,351		198,604
Share of profits less losses of associates and joint ventures		0	133,694		180,447
Net (loss) /gain on disposal of non-current assets		0	115,769		90,534
Income tax expense		0	928,854		1,016,588
Impact of other IFRS adjustments [member]
Other material items [line items]
Revenue	[2]	0	0		0
Interest expense	[2]	0	0		0
Depreciation and amortization	[2]	(1,468,972)	(344,929)		(394,473)
Impairment loss	[2]	1,275	0		0
Share of profits less losses of associates and joint ventures	[2]	(19,184)	(14,220)		(55,983)
Net (loss) /gain on disposal of non-current assets	[2]	(38,287)	1,762		(33,478)
Income tax expense	[2]	¥ 355,944	¥ 114,962		¥ 136,507

[1] Restated. The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

[2] Other GAAP adjustments above primarily represented the classification adjustments and other adjustments. Other than the classification adjustments, the differences will be gradually eliminated following subsequent depreciation and amortization of related assets or the extinguishment of liabilities.

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Revenue and segment information (Geographical information (Under IFRS)) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015
Geographical information (Under IFRS) [line items]
Revenue from external customers	¥ 152,459,444	¥ 113,814,236	[1]	¥ 128,904,873	[1]
Non-current assets (excluding financial assets and deferred income tax assets)	342,570,291	272,525,687
PRC [member]
Geographical information (Under IFRS) [line items]
Revenue from external customers	142,381,413	105,055,414		118,761,080
Non-current assets (excluding financial assets and deferred income tax assets)	319,534,533	249,155,921
Singapore [member]
Geographical information (Under IFRS) [line items]
Revenue from external customers	10,078,031	8,758,822		¥ 10,143,793
Non-current assets (excluding financial assets and deferred income tax assets)	¥ 23,035,758	¥ 23,369,766

[1] Restated. The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

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Revenue and segment information (Information on sales to major customers) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015
Information on sales to major customers [line items]
Minimum proportion of sales to major customers at amount against external revenue	10.00%	10.00%		10.00%
Revenue	¥ 152,459,444	¥ 113,814,236	[1]	¥ 128,904,873	[1]
State Grid Shandong Electric Power Company [member]
Information on sales to major customers [line items]
Revenue	¥ 28,659,891	¥ 12,649,224		¥ 14,855,655
Proportion	19.00%	11.00%		12.00%
Grid companies under common control of State Grid Corporation of China [member]
Information on sales to major customers [line items]
Proportion	76.00%	74.00%		81.00%

[1] Restated. The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

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Profit before income tax expense (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Profit before income tax expense [abstract]
Total interest expense on borrowing	¥ 10,225,069		¥ 7,267,490		¥ 8,716,074
Less: amounts capitalized in property, plant and equipment	476,065		449,964		770,340
Interest expenses charged in consolidated statement of comprehensive income	9,749,004		6,817,526	[1]	7,945,734	[1]
Auditors' remuneration-audit services	64,160		43,610		41,640
Operating leases charge	364,756		331,496		313,723
Fuel	92,737,304		56,617,542		59,242,367
Depreciation of property, plant and equipment	20,180,830		14,815,620		14,411,632
Amortization of land use rights	341,125		225,707		213,206
Amortization of other non-current assets	113,878		121,388		92,775
Impairment loss of property, plant and equipment	1,046,195		1,063,735		1,047,641
Impairment losses for land use rights	108,590		51,981		0
Impairment loss of investment in an associate	0		0		178,131
Impairment loss of mining rights	0		0		760,296
Impairment loss of goodwill	0		0		1,105,649
Impairment loss of other non-current assets	5,008		0		0
Recognition/ (reversal) of provision for doubtful accounts	27,682		89,498		(3,392)
(Reversal) /recognition of provision for inventory obsolescence	(263)		(256)		1,828
Net loss on disposals of non-current assets	616,456		590,049	[1]	438,321	[1]
Government grants	(421,912)		(396,467)		(696,735)
Gain on a bargain purchase	0		(129,921)		0
Included in other investment income [abstract]
Gains on disposal of available-for-sale financial asset (Note 10)	(1,479,732)		(932,738)		0
Dividends on available-for-sale financial assets	(124,918)		(103,037)		(97,696)
Gains on disposal of subsidiaries	(52,330)	[2]	0		0
Included in (gain) /loss on fair value changes of financial assets/liabilities
Contingent consideration of the business combination (Note 40)	(859,547)		0		0
Loss on fair value changes of trading derivatives	¥ 2,761		¥ 12,986		¥ 16,762

[1] Restated. The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

[2] For the disposals of Taishan Power Limited Company and Huaneng (Fujian) Harbour Limited Company with no interest being retained. The Company received consideration of RMB781 million and RMB222 Million respectively. The investment income of 52 million was recognized and the related non-controlling interests of RMB681 million and RMB186 million with the subsidiaries were derecognized.

XML

Profit before income tax expense (Narrative) (Detail) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017 CNY (¥)
Disclosure of detailed information about disposal of subsidiaries [line items]
Related non-controlling interests derecognized	¥ 866,859
Non-controlling interests [member]
Disclosure of detailed information about disposal of subsidiaries [line items]
Related non-controlling interests derecognized	¥ 866,859
Taishan Power Limited Company [member]
Disclosure of detailed information about disposal of subsidiaries [line items]
Proportion of interest retained after disposal of subsidiaries	0.00%
Consideration received by the Company	¥ 781,000
Taishan Power Limited Company [member] | Non-controlling interests [member]
Disclosure of detailed information about disposal of subsidiaries [line items]
Related non-controlling interests derecognized	¥ 681,000
Huaneng (Fujian) Harbour Limited Company [member]
Disclosure of detailed information about disposal of subsidiaries [line items]
Proportion of interest retained after disposal of subsidiaries	0.00%
Consideration received by the Company	¥ 222,000
Huaneng (Fujian) Harbour Limited Company [member] | Non-controlling interests [member]
Disclosure of detailed information about disposal of subsidiaries [line items]
Related non-controlling interests derecognized	¥ 186,000

XML

Property, plant and equipment (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	¥ 223,061,809	¥ 219,673,070
Reclassification	0	0
Business combination (Note 40)	63,780,809	319,505
Additions	22,155,315	19,382,330
Transfer from CIP	0	0
Disposals/write-off	(1,330,866)	(811,085)
Disposal of subsidiaries	(2,243,726)
Depreciation charge	(20,201,165)	(14,844,164)
Impairment charge	(1,046,195)	(1,063,735)	¥ (1,047,641)
Currency translation differences	152,112	405,888
End of the year	284,328,093	223,061,809	219,673,070
Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	391,185,752	372,491,749
End of the year	471,776,159	391,185,752	372,491,749
Accumulated depreciation [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	(159,818,330)	(145,688,967)
End of the year	(178,100,381)	(159,818,330)	(145,688,967)
Accumulated impairment loss [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	(8,305,613)	(7,129,712)
End of the year	(9,347,685)	(8,305,613)	(7,129,712)
Dam [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	1,379,598	1,433,838
Reclassification	49,386	0
Business combination (Note 40)	279,169	0
Additions	0	0
Transfer from CIP	15,355	20,170
Disposals/write-off	0	0
Disposal of subsidiaries	0
Depreciation charge	(40,200)	(32,987)
Impairment charge	(45,619)	(41,423)
Currency translation differences	0	0
End of the year	1,637,689	1,379,598	1,433,838
Dam [member] | Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	1,876,314	1,856,144
End of the year	2,220,224	1,876,314	1,856,144
Dam [member] | Accumulated depreciation [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	(186,312)	(153,325)
End of the year	(226,512)	(186,312)	(153,325)
Dam [member] | Accumulated impairment loss [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	(310,404)	(268,981)
End of the year	(356,023)	(310,404)	(268,981)
Port facilities [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	3,560,237	3,423,794
Reclassification	(404)	1,771
Business combination (Note 40)	0	0
Additions	0	1,770
Transfer from CIP	114,688	246,712
Disposals/write-off	(14,731)	0
Disposal of subsidiaries	(632,709)
Depreciation charge	(111,529)	(113,810)
Impairment charge	0	0
Currency translation differences	0	0
End of the year	2,915,552	3,560,237	3,423,794
Port facilities [member] | Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	4,116,914	3,860,009
End of the year	3,358,811	4,116,914	3,860,009
Port facilities [member] | Accumulated depreciation [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	(556,677)	(436,215)
End of the year	(443,259)	(556,677)	(436,215)
Port facilities [member] | Accumulated impairment loss [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	0	0
End of the year	0	0	0
Buildings [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	6,236,324	5,728,768
Reclassification	52,047	(492,558)
Business combination (Note 40)	1,944,531	8,098
Additions	184	127
Transfer from CIP	342,285	1,319,019
Disposals/write-off	(30,837)	(68,945)
Disposal of subsidiaries	(101,169)
Depreciation charge	(339,630)	(255,882)
Impairment charge	(1,651)	(2,303)
Currency translation differences	0	0
End of the year	8,102,084	6,236,324	5,728,768
Buildings [member] | Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	9,056,858	8,306,471
End of the year	11,173,669	9,056,858	8,306,471
Buildings [member] | Accumulated depreciation [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	(2,749,300)	(2,508,772)
End of the year	(3,019,198)	(2,749,300)	(2,508,772)
Buildings [member] | Accumulated impairment loss [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	(71,234)	(68,931)
End of the year	(52,387)	(71,234)	(68,931)
Electric utility plant in service [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	181,700,877	183,006,185
Reclassification	(157,759)	495,841
Business combination (Note 40)	58,379,270	303,854
Additions	840,991	418,812
Transfer from CIP	20,283,508	12,576,736
Disposals/write-off	(1,252,829)	(495,251)
Disposal of subsidiaries	(114,542)
Depreciation charge	(19,155,852)	(14,004,881)
Impairment charge	(754,753)	(1,005,367)
Currency translation differences	151,249	404,948
End of the year	239,920,160	181,700,877	183,006,185
Electric utility plant in service [member] | Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	341,195,395	327,827,738
End of the year	418,360,698	341,195,395	327,827,738
Electric utility plant in service [member] | Accumulated depreciation [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	(152,408,524)	(138,852,591)
End of the year	(170,525,898)	(152,408,524)	(138,852,591)
Electric utility plant in service [member] | Accumulated impairment loss [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	(7,085,994)	(5,968,962)
End of the year	(7,914,640)	(7,085,994)	(5,968,962)
Transportation facilities [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	554,659	609,064
Reclassification	(4,357)	759
Business combination (Note 40)	17,243	0
Additions	0	0
Transfer from CIP	288,554	20,033
Disposals/write-off	(3,907)	(26,477)
Disposal of subsidiaries	0
Depreciation charge	(59,022)	(48,720)
Impairment charge	0	0
Currency translation differences	0	0
End of the year	793,170	554,659	609,064
Transportation facilities [member] | Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	875,630	980,290
End of the year	1,155,392	875,630	980,290
Transportation facilities [member] | Accumulated depreciation [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	(320,971)	(371,226)
End of the year	(362,222)	(320,971)	(371,226)
Transportation facilities [member] | Accumulated impairment loss [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	0	0
End of the year	0	0	0
Others [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	2,357,009	2,361,234
Reclassification	61,087	(5,813)
Business combination (Note 40)	443,052	2,977
Additions	88,160	122,519
Transfer from CIP	145,705	296,648
Disposals/write-off	(28,562)	(27,055)
Disposal of subsidiaries	(153,096)
Depreciation charge	(494,932)	(387,884)
Impairment charge	(2,503)	(6,399)
Currency translation differences	263	782
End of the year	2,416,183	2,357,009	2,361,234
Others [member] | Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	6,041,783	5,809,400
End of the year	5,972,688	6,041,783	5,809,400
Others [member] | Accumulated depreciation [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	(3,596,546)	(3,366,838)
End of the year	(3,523,292)	(3,596,546)	(3,366,838)
Others [member] | Accumulated impairment loss [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	(88,228)	(81,328)
End of the year	(33,213)	(88,228)	(81,328)
CIP [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	27,273,105	23,110,187
Reclassification	0	0
Business combination (Note 40)	2,717,544	4,576
Additions	21,225,980	18,839,102
Transfer from CIP	(21,190,095)	(14,479,318)
Disposals/write-off	0	(193,357)
Disposal of subsidiaries	(1,242,210)
Depreciation charge	0	0
Impairment charge	(241,669)	(8,243)
Currency translation differences	600	158
End of the year	28,543,255	27,273,105	23,110,187
CIP [member] | Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	28,022,858	23,851,697
End of the year	29,534,677	28,022,858	23,851,697
CIP [member] | Accumulated depreciation [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	0	0
End of the year	0	0	0
CIP [member] | Accumulated impairment loss [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning of the year	(749,753)	(741,510)
End of the year	¥ (991,422)	¥ (749,753)	¥ (741,510)

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Property, plant and equipment (Interest capitalization) (Detail) - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Property, plant and equipment [abstract]
Interest expense arising on borrowings	¥ 476	¥ 450
Weighted average capitalization rate	4.54%	4.52%

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Property, plant and equipment (Impairment) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of detailed information about property, plant and equipment [line items]
Impairment loss of property, plant and equipment	¥ 1,046,195	¥ 1,063,735	¥ 1,047,641
Impairment losses for land use rights	¥ 108,590	¥ 51,981	¥ 0
Coal-fired power plant one [member]
Disclosure of detailed information about property, plant and equipment [line items]
Discount rates	9.50%	8.06%
Coal-fired power plant two [member]
Disclosure of detailed information about property, plant and equipment [line items]
Discount rates	9.98%	8.97%
Coal-fired power plant three [member]
Disclosure of detailed information about property, plant and equipment [line items]
Discount rates	9.89%
Coal-fired power plant four [member]
Disclosure of detailed information about property, plant and equipment [line items]
Discount rates	14.74%
Hydropower plant one [member]
Disclosure of detailed information about property, plant and equipment [line items]
Discount rates	9.14%	8.12%
Coal-fired power project in construction [member]
Disclosure of detailed information about property, plant and equipment [line items]
Impairment loss of property, plant and equipment	¥ 242,000

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Property, plant and equipment (Property, plant and equipment held under finance leases) (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2017	Dec. 31, 2016
Property, plant and equipment [abstract]
Original cost	¥ 3,312	¥ 2,075

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Property, plant and equipment (Buildings without ownership certificate) (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2017	Dec. 31, 2016
Property, plant and equipment [abstract]
Aggregate net book value	¥ 10,800	¥ 7,871

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Investments in associates and joint ventures (Summary of investments in associates and joint ventures) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Investments in associates and joint ventures [abstract]
Beginning of the year	¥ 19,632,113	¥ 19,745,192
Capital injections in associates and joint ventures	301,916	276,118
Business combination (Note 40(a))	1,021,566	0
Transfer from available-for-sale	91,800	0
Transfer to subsidiaries	(736,725)	0
Share of net profit less loss	425,215	1,298,889
Share of other comprehensive income/ (loss)	121,208	(180,572)
Currency translation differences	(142,226)	0
Dividends	(835,279)	(1,507,514)
Elimination of unrealized profits on transactions with equity-method investees	(361,965)	0
End of the year	¥ 19,517,623	¥ 19,632,113

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Investments in associates and joint ventures (Basic information of material associates and joint ventures) (Detail) - CNY (¥)		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016
SECL [member]
Summarized financial information of investments in associates and joint ventures [line items]
Country of incorporation	[1]	PRC
Registered capital	[1]	¥ 2,642,994,398
Business nature and scope of operation	[1]	Energy and investment in related industries
Percentage of equity interest held, Direct	[1]	25.02%
Percentage of equity interest held, Indirect	[1],[2]	0.00%
The fair value of the Company's shares		¥ 6,010,000,000	¥ 6,813,000,000
Hebei Hanfeng Power Generation Limited Liability Company ("Hanfeng Power") [member]
Summarized financial information of investments in associates and joint ventures [line items]
Country of incorporation		PRC
Registered capital		¥ 1,975,000,000
Business nature and scope of operation		Power generation
Percentage of equity interest held, Direct		40.00%
Percentage of equity interest held, Indirect	[2]	0.00%
Huaneng Finance [member]
Summarized financial information of investments in associates and joint ventures [line items]
Country of incorporation		PRC
Registered capital		¥ 5,000,000,000
Business nature and scope of operation		Provision for financial service including fund deposit services, lending, finance lease arrangements, notes discounting and entrusted loans and investment arrangement within Huaneng Group
Percentage of equity interest held, Direct		20.00%
Percentage of equity interest held, Indirect	[2]	0.00%
Huaneng Sichuan Hydropower Co., Ltd. ("Sichuan Hydropower") [member]
Summarized financial information of investments in associates and joint ventures [line items]
Country of incorporation		PRC
Registered capital		¥ 1,469,800,000
Business nature and scope of operation		Development, investment, construction, operation and management of hydropower
Percentage of equity interest held, Direct		49.00%
Percentage of equity interest held, Indirect	[2]	0.00%
China Huaneng Group Fuel Co., Ltd. ("Huaneng Group Fuel Company") [member]
Summarized financial information of investments in associates and joint ventures [line items]
Country of incorporation	[3]	PRC
Registered capital	[3]	¥ 3,000,000,000
Business nature and scope of operation	[3]	Wholesale of coal, import and export of coal
Percentage of equity interest held, Direct	[3]	50.00%
Percentage of equity interest held, Indirect	[2],[3]	0.00%
Hainan Nuclear Power Limited Liability Company ("Hainan Nuclear") [member]
Summarized financial information of investments in associates and joint ventures [line items]
Country of incorporation		PRC
Registered capital		¥ 4,831,460,000
Business nature and scope of operation		Construction and operation of nuclear power plants; production and sales of electricity and related products
Percentage of equity interest held, Direct		30.00%
Percentage of equity interest held, Indirect	[2]	0.00%
Shanghai Time Shipping Co., Ltd. ("Shanghai Time Shipping") [member]
Summarized financial information of investments in associates and joint ventures [line items]
Country of incorporation		PRC
Registered capital		¥ 1,200,000,000
Business nature and scope of operation		International and domestic sea transportation
Percentage of equity interest held, Direct		50.00%
Percentage of equity interest held, Indirect	[2]	0.00%
Jiangsu Nantong Power Generation Co., Ltd. ("Jiangsu Nantong Power") [member]
Summarized financial information of investments in associates and joint ventures [line items]
Country of incorporation		PRC
Registered capital		¥ 1,596,000,000
Business nature and scope of operation		Operation and Management of power generation plants and transportation related projects
Percentage of equity interest held, Direct		0.00%
Percentage of equity interest held, Indirect	[2]	35.00%
Huaneng Shandong Ruyi (Hongkong) Energy Co., Ltd. ("Ruyi (Hongkong) Energy") [member]
Summarized financial information of investments in associates and joint ventures [line items]
Country of incorporation	[4]	Hong Kong
Registered capital	[4]	10,000
Business nature and scope of operation	[4]	Investment in electricity and other related energy projects
Percentage of equity interest held, Direct	[4]	0.00%
Percentage of equity interest held, Indirect	[2],[4]	40.00%
Shandong Luyi Power International Limited Company ("Luyi Power") [member]
Summarized financial information of investments in associates and joint ventures [line items]
Country of incorporation	[4]	PRC
Registered capital	[4]	¥ 35,000,000
Business nature and scope of operation	[4]	Contracting overseas projects and international bidding projects, mechanical and electrical equipment installation engineering and electric power engineering
Percentage of equity interest held, Direct	[4]	0.00%
Percentage of equity interest held, Indirect	[2],[4]	40.00%

[1] As at 31 December 2017, the fair value of the Company's shares in SECL was RMB6,010 million (2016: RMB6,813 million).

[2] The indirect percentage of equity interest held represents the effective ownership interest of the Company and its subsidiaries.

[3] In accordance with the articles of the association of the investee, the Company could only exercise significant influence on the investee and therefore accounts for the investment under the equity method.

[4] Ruyi (Hongkong) Energy and Luyi Power were established for Pakistan Sahiwal Project, which are jointly controlled by Huaneng Shandong Power Generation Co., Ltd. and Shandong Ruyi Technology Group Co., Ltd.

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Investments in associates and joint ventures (Summarized financial information of material associates) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015		Dec. 31, 2014
Gross amounts of the associates'
Current assets	¥ 48,537,710	¥ 36,966,616
Non-current assets	348,051,801	277,873,123
Current liabilities	(155,950,488)	(130,196,251)
Non-current liabilities	(133,024,419)	(82,456,751)
Equity	107,614,604	102,186,737		¥ 101,693,689		¥ 84,782,706
Equity attributable to shareholders	87,641,566	86,002,995
Non-controlling interests	19,973,038	16,183,742
Revenue	152,459,444	113,814,236	[1]	128,904,873	[1]
Profit/ (loss) from continuing operations attributable to shareholders	1,579,836	8,520,427		13,651,933
Total comprehensive income/ (loss) attributable to shareholders	1,023,118	9,005,227		¥ 14,807,889
Sichuan Hydropower [member]
Gross amounts of the associates'
Current assets	1,113,579	1,245,157
Non-current assets	14,590,921	14,676,021
Current liabilities	(2,477,362)	(2,410,462)
Non-current liabilities	(8,661,852)	(8,901,599)
Equity	4,565,286	4,609,117
Equity attributable to shareholders	3,400,953	3,449,824
Non-controlling interests	1,164,333	1,159,293
Revenue	2,247,781	2,053,327
Profit/ (loss) from continuing operations attributable to shareholders	222,403	173,220
Other comprehensive (loss) /income attributable to shareholders	0	0
Total comprehensive income/ (loss) attributable to shareholders	222,403	173,220
Dividend received from the associates	132,923	145,392
Reconciled to the interests in the associates
Gross amounts of net assets attributable to shareholders of the associate	¥ 3,400,953	¥ 3,449,824
The Company's effective interest	49.00%	49.00%
The Company's share of net assets attributable to shareholders of the associate	¥ 1,666,467	¥ 1,690,414
Impact of adjustments	207,586	207,586
Carrying amount in the consolidated financial statements	1,874,053	1,898,000
SECL [member]
Gross amounts of the associates'
Current assets	16,444,934	14,021,440
Non-current assets	56,079,321	46,584,060
Current liabilities	(20,447,190)	(16,564,310)
Non-current liabilities	(28,491,540)	(19,395,060)
Equity	23,585,525	24,646,130
Equity attributable to shareholders	22,285,077	21,610,140
Non-controlling interests	1,300,448	3,035,990
Revenue	13,908,949	11,427,830
Profit/ (loss) from continuing operations attributable to shareholders	747,657	1,362,028
Other comprehensive (loss) /income attributable to shareholders	521,965	(638,680)
Total comprehensive income/ (loss) attributable to shareholders	1,269,622	723,348
Dividend received from the associates	148,761	198,348
Reconciled to the interests in the associates
Gross amounts of net assets attributable to shareholders of the associate	¥ 22,285,077	¥ 21,610,140
The Company's effective interest	25.02%	25.02%
The Company's share of net assets attributable to shareholders of the associate	¥ 5,574,612	¥ 5,405,776
Impact of adjustments	1,161,810	1,161,810
Carrying amount in the consolidated financial statements	6,736,422	6,567,586
Huaneng Finance [member]
Gross amounts of the associates'
Current assets	25,535,504	13,919,342
Non-current assets	20,786,497	18,055,386
Current liabilities	(39,588,213)	(25,344,346)
Non-current liabilities	(49,904)	(57,368)
Equity	6,683,884	6,573,014
Equity attributable to shareholders	6,683,884	6,573,014
Non-controlling interests	0	0
Revenue	1,393,211	1,093,637
Profit/ (loss) from continuing operations attributable to shareholders	718,970	660,089
Other comprehensive (loss) /income attributable to shareholders	(28,099)	(125,840)
Total comprehensive income/ (loss) attributable to shareholders	690,871	534,249
Dividend received from the associates	116,000	122,000
Reconciled to the interests in the associates
Gross amounts of net assets attributable to shareholders of the associate	¥ 6,683,884	¥ 6,573,014
The Company's effective interest	20.00%	20.00%
The Company's share of net assets attributable to shareholders of the associate	¥ 1,336,777	¥ 1,314,603
Impact of adjustments	0	0
Carrying amount in the consolidated financial statements	1,336,777	1,314,603
Hanfeng Power [member]
Gross amounts of the associates'
Current assets	650,055	806,432
Non-current assets	2,246,412	2,616,639
Current liabilities	(795,815)	(1,045,876)
Non-current liabilities	(27,443)	(37,103)
Equity	2,073,209	2,340,092
Equity attributable to shareholders	2,073,209	2,340,092
Non-controlling interests	0	0
Revenue	2,073,209	2,192,445
Profit/ (loss) from continuing operations attributable to shareholders	52,361	290,470
Other comprehensive (loss) /income attributable to shareholders	0	0
Total comprehensive income/ (loss) attributable to shareholders	52,361	290,470
Dividend received from the associates	127,698	174,366
Reconciled to the interests in the associates
Gross amounts of net assets attributable to shareholders of the associate	¥ 2,073,209	¥ 2,340,092
The Company's effective interest	40.00%	40.00%
The Company's share of net assets attributable to shareholders of the associate	¥ 829,284	¥ 936,037
Impact of adjustments	293,082	293,082
Carrying amount in the consolidated financial statements	1,122,366	1,229,119
Huaneng Group Fuel Company [member]
Gross amounts of the associates'
Current assets	4,327,146	4,642,797
Non-current assets	4,102,426	4,269,520
Current liabilities	(1,778,075)	(1,939,210)
Non-current liabilities	(3,119,462)	(3,432,326)
Equity	3,532,035	3,540,781
Equity attributable to shareholders	3,400,344	3,378,952
Non-controlling interests	131,691	161,829
Revenue	17,166,036	14,356,915
Profit/ (loss) from continuing operations attributable to shareholders	48,876	102,363
Other comprehensive (loss) /income attributable to shareholders	(6,654)	8,723
Total comprehensive income/ (loss) attributable to shareholders	42,222	111,086
Dividend received from the associates	10,000	10,000
Reconciled to the interests in the associates
Gross amounts of net assets attributable to shareholders of the associate	¥ 3,400,344	¥ 3,378,952
The Company's effective interest	50.00%	50.00%
The Company's share of net assets attributable to shareholders of the associate	¥ 1,700,172	¥ 1,689,476
Impact of adjustments	16,521	16,521
Carrying amount in the consolidated financial statements	1,716,693	1,705,997
Hainan Nuclear [member]
Gross amounts of the associates'
Current assets	2,497,765	2,608,909
Non-current assets	22,490,989	23,939,921
Current liabilities	(3,409,360)	(3,330,581)
Non-current liabilities	(17,252,794)	(18,356,288)
Equity	4,326,600	4,861,961
Equity attributable to shareholders	4,326,600	4,861,961
Non-controlling interests	0	0
Revenue	2,504,379	1,897,190
Profit/ (loss) from continuing operations attributable to shareholders	(535,361)	18,618
Other comprehensive (loss) /income attributable to shareholders	0	0
Total comprehensive income/ (loss) attributable to shareholders	(535,361)	18,618
Dividend received from the associates	0	0
Reconciled to the interests in the associates
Gross amounts of net assets attributable to shareholders of the associate	¥ 4,326,600	¥ 4,861,961
The Company's effective interest	30.00%	30.00%
The Company's share of net assets attributable to shareholders of the associate	¥ 1,297,980	¥ 1,458,588
Impact of adjustments	14,076	14,076
Carrying amount in the consolidated financial statements	¥ 1,312,056	¥ 1,472,664

[1] Restated. The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

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Investments in associates and joint ventures (Summarized financial information of material joint ventures) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015		Dec. 31, 2014
Gross amounts of joint ventures'
Current assets	¥ 48,537,710	¥ 36,966,616
Non-current assets	348,051,801	277,873,123
Current liabilities	(155,950,488)	(130,196,251)
Non-current liabilities	(133,024,419)	(82,456,751)
Equity	107,614,604	102,186,737		¥ 101,693,689		¥ 84,782,706
Included in the above assets and liabilities:
Cash and cash equivalents	9,282,390	7,810,501		7,478,250		¥ 12,238,367
Revenue	152,459,444	113,814,236	[1]	128,904,873	[1]
Total comprehensive (loss) /income	998,993	10,833,271		18,414,967
Included in the above profit:
Depreciation and amortization	20,635,833	15,162,715	[1]	14,717,613	[1]
Interest income	198,906	147,063		160,723
Interest expense	9,749,004	6,817,526	[1]	7,945,734	[1]
Income tax expense	1,217,526	3,465,151	[1]	¥ 5,698,943	[1]
Shanghai Time Shipping [member]
Gross amounts of joint ventures'
Current assets	665,410	883,120
Non-current assets	4,663,530	5,335,409
Current liabilities	(3,316,709)	(3,177,881)
Non-current liabilities	(617,437)	(1,506,076)
Equity	1,394,794	1,534,572
Included in the above assets and liabilities:
Cash and cash equivalents	96,528	203,018
Current financial liabilities (excluding trade and other payables and provisions)	(2,987,937)	(2,681,857)
Non-current financial liabilities (excluding trade and other payables and provisions)	(617,437)	(1,506,076)
Revenue	3,532,065	3,561,091
(Loss) /profit from continuing operations	(139,780)	1,212
Other comprehensive (loss) /income attributable to shareholders	0	0
Total comprehensive (loss) /income	(139,780)	1,212
Dividend received in cash from the joint ventures	0	275,000
Included in the above profit:
Depreciation and amortization	317,133	340,826
Interest income	1,406	985
Interest expense	157,851	149,748
Income tax expense	(45,741)	500
Reconciled to the interests in the joint venture:
Gross amounts of net assets	¥ 1,394,794	¥ 1,534,572
The Company and its subsidiaries' effective interest	50.00%	50.00%
The Company and its subsidiaries' share of net assets	¥ 697,397	¥ 767,286
Impact of adjustments	18,324	18,324
Carrying amount in the consolidated financial statements	715,721	785,610
Jiangsu Nantong Power [member]
Gross amounts of joint ventures'
Current assets	656,720	815,359
Non-current assets	5,739,860	6,075,100
Current liabilities	(2,939,371)	(2,600,258)
Non-current liabilities	(1,374,656)	(1,931,219)
Equity	2,082,553	2,358,982
Included in the above assets and liabilities:
Cash and cash equivalents	362,214	96,501
Current financial liabilities (excluding trade and other payables and provisions)	(2,404,331)	(2,270,601)
Non-current financial liabilities (excluding trade and other payables and provisions)	(1,352,000)	(1,931,219)
Revenue	3,451,983	3,354,545
(Loss) /profit from continuing operations	271,364	608,660
Other comprehensive (loss) /income attributable to shareholders	0	0
Total comprehensive (loss) /income	271,364	608,660
Dividend received in cash from the joint ventures	724,453	0
Included in the above profit:
Depreciation and amortization	396,500	393,221
Interest income	1,810	2,313
Interest expense	130,028	128,224
Income tax expense	92,294	194,915
Reconciled to the interests in the joint venture:
Gross amounts of net assets	¥ 2,082,553	¥ 2,358,982
The Company and its subsidiaries' effective interest	50.00%	50.00%
The Company and its subsidiaries' share of net assets	¥ 1,041,277	¥ 1,179,491
Impact of adjustments	0	0
Carrying amount in the consolidated financial statements	1,041,277	¥ 1,179,491
Pakistan Sahiwal Project Related Investment [member]
Gross amounts of joint ventures'
Current assets	3,069,065
Non-current assets	9,775,693
Current liabilities	(1,955,211)
Non-current liabilities	(8,738,121)
Equity	2,151,426
Included in the above assets and liabilities:
Cash and cash equivalents	618,105
Current financial liabilities (excluding trade and other payables and provisions)	(1,482,269)
Non-current financial liabilities (excluding trade and other payables and provisions)	(8,738,121)
Revenue	2,321,510
(Loss) /profit from continuing operations	(72,227)
Other comprehensive (loss) /income attributable to shareholders	(284,452)
Total comprehensive (loss) /income	(356,679)
Dividend received in cash from the joint ventures	0
Included in the above profit:
Depreciation and amortization	63,122
Interest income	10
Interest expense	104,467
Income tax expense	224,146
Reconciled to the interests in the joint venture:
Gross amounts of net assets	¥ 2,151,426
The Company and its subsidiaries' effective interest	50.00%
The Company and its subsidiaries' share of net assets	¥ 1,075,713
Impact of adjustments	(361,965)
Carrying amount in the consolidated financial statements	¥ 713,748

[1] Restated. The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

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Investments in associates and joint ventures (Disclosure of aggregated information of individually immaterial associates and joint ventures) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Aggregate amounts of the Company and its subsidiaries' share of those associates and joint ventures
Unrecognized further losses	¥ 185,000	¥ 163,000
Individually immaterial associates and joint ventures [member]
Summarized financial information of investments in associates and joint ventures [line items]
Aggregate carrying amount of individually immaterial associates and joint ventures in the consolidated financial statements	2,948,510	3,479,043
Aggregate amounts of the Company and its subsidiaries' share of those associates and joint ventures
Profit from continuing operations	70,965	263,392
Total comprehensive income	¥ 70,965	¥ 263,392

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Investments in subsidiaries (Subsidiaries acquired through establishment or investment) (Detail)	12 Months Ended
	Dec. 31, 2017 CNY (¥) shares		Dec. 31, 2017 SGD ($) shares
Huaneng International Power Fuel Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 200,000,000
Business nature and scope of operations	Wholesale of coal
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Shanghai Shidongkou Power Generation Limited Liability Company ("Shidongkou Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[1]
Type of interest held	held directly	[1]
Registered capital	¥ 1,179,000,000	[1]
Business nature and scope of operations	Power generation	[1]
Percentage of equity interest held, Interest	50.00%	[1]
Percentage of equity interest held, Voting	100.00%	[1]
Huaneng Nantong Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 798,000,000
Business nature and scope of operations	Power generation
Percentage of equity interest held, Interest	70.00%
Percentage of equity interest held, Voting	70.00%
Huaneng Yingkou Co-generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 844,030,000
Business nature and scope of operations	Production and sales of electricity and heat sale of coal ash and lime
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Hunan Xiangqi Hydropower Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 328,000,000
Business nature and scope of operations	Construction, operation and management of hydropower plants and related projects
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Zuoquan Coal-fired Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 960,000,000
Business nature and scope of operations	Construction, operation and management of electricity projects; Development and utilization of clean energy resources
Percentage of equity interest held, Interest	80.00%
Percentage of equity interest held, Voting	80.00%
Huaneng Kangbao Wind Power Utilization Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 407,200,000
Business nature and scope of operations	Construction, operation and management of wind power plants and related projects; solar power generation
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Jiuquan Wind Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 2,600,000,000
Business nature and scope of operations	Construction, operation and management of wind power generation and related projects
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Jiuquan II Wind Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 10,000,000
Business nature and scope of operations	Construction, operation and management of wind power generation and related projects
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Wafangdian Wind Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 50,000,000
Business nature and scope of operations	Construction, operation and management of wind power generation and related projects
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Changtu Wind Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 50,000,000
Business nature and scope of operations	Construction, operation and management of wind power generation and related projects
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Rudong Wind Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 90,380,000
Business nature and scope of operations	Operation, management of wind power generation projects
Percentage of equity interest held, Interest	90.00%
Percentage of equity interest held, Voting	90.00%
Huaneng Guangdong Haimen Port Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 331,400,000
Business nature and scope of operations	Loading, warehousing and conveying services, providing facility services and water transportation services
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Taicang Port Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 600,000,000
Business nature and scope of operations	Port provision, cargo loading and storage
Percentage of equity interest held, Interest	85.00%
Percentage of equity interest held, Voting	85.00%
Huaneng Taicang Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 804,146,700
Business nature and scope of operations	Power generation
Percentage of equity interest held, Interest	75.00%
Percentage of equity interest held, Voting	75.00%
Huaneng Huaiyin II Power Generation Limited Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 930,870,000
Business nature and scope of operations	Power generation
Percentage of equity interest held, Interest	63.64%
Percentage of equity interest held, Voting	63.64%
Huaneng Xindian Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 465,600,000
Business nature and scope of operations	Power generation
Percentage of equity interest held, Interest	95.00%
Percentage of equity interest held, Voting	95.00%
Huaneng Shanghai Combined Cycle Power Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 699,700,000
Business nature and scope of operations	Power generation
Percentage of equity interest held, Interest	70.00%
Percentage of equity interest held, Voting	70.00%
Huaneng Yumen Wind Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 719,170,000
Business nature and scope of operations	Construction, operation and management of wind power generation and related projects
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Qingdao Co-generation Limited Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 214,879,000
Business nature and scope of operations	Construction, operation and management of co-generation power plants and related projects
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Tongxiang Combined Cycle Co-generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 300,000,000
Business nature and scope of operations	Production and sales of electricity and heat; investment in combined cycle co-generation industries
Percentage of equity interest held, Interest	95.00%
Percentage of equity interest held, Voting	95.00%
Huaneng Eastern Yunnan Energy Mine Construction Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held indirectly
Registered capital	¥ 10,000,000
Business nature and scope of operations	Mine engineering, construction engineering, equipment installation engineering
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Nanjing Combined Cycle Co-generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 582,000,000
Business nature and scope of operations	Construction, operation and management of power plants and related projects
Percentage of equity interest held, Interest	60.00%
Percentage of equity interest held, Voting	60.00%
Huaneng Shantou Haimen Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 1,508,000,000
Business nature and scope of operations	Construction, operation and management of power plants and related projects
Percentage of equity interest held, Interest	80.00%
Percentage of equity interest held, Voting	80.00%
Huaneng Chongqing Liangjiang Power Generation Limited Liability Company ("Liangjiang Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 726,600,000
Business nature and scope of operations	Construction, operation and management of natural gas power plants and related projects
Percentage of equity interest held, Interest	90.00%
Percentage of equity interest held, Voting	90.00%
Chongqing Huaqing Energy Co., Ltd. ("Huaqing Energy") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[2]
Type of interest held	held indirectly	[2]
Registered capital	¥ 44,420,000	[2]
Business nature and scope of operations	Providing thermal energy and cold energy services; supplying electricity	[2]
Percentage of equity interest held, Interest	54.00%	[2]
Percentage of equity interest held, Voting	60.00%	[2]
Huaneng Yunnan Fuyuan Wind Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 157,290,000
Business nature and scope of operations	Wind power project investment, management and sales
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Guizhou Panxian Wind Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 86,500,000
Business nature and scope of operations	Construction and management of wind power plants and related projects
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Jiangxi Clean Energy Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 5,000,000
Business nature and scope of operations	Power generation and supply, development, management and construction of clean energy projects
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Suzhou Combined Cycle Co-generation Co., Ltd. ("Suzhou Combined Cycle Co-generation") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[3]
Type of interest held	held indirectly	[3]
Registered capital	¥ 310,000,000	[3]
Business nature and scope of operations	Construction and management of natural gas power plant and related projects	[3]
Percentage of equity interest held, Interest	53.45%	[3]
Percentage of equity interest held, Voting	100.00%	[3]
Huaneng Hunan Subaoding Wind Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 266,000,000
Business nature and scope of operations	Construction, operation and management of wind power plants and related projects
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Suixian Jieshan Wind Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 96,500,000
Business nature and scope of operations	Construction, operation and management of wind power plants and related projects
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Taiyuan Dongshan Combined Cycle Co-generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 600,000,000
Business nature and scope of operations	Construction and operation of thermal heating network, development and utilization of clean energy resources
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Xuzhou Tongshan Wind Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 2,644,560,000
Business nature and scope of operations	Wind power generation, electricity engineering design services, maintenance of power supply and control facilities, solar energy power generation
Percentage of equity interest held, Interest	70.00%
Percentage of equity interest held, Voting	70.00%
Huaneng Nanjing Co-generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 300,000,000
Business nature and scope of operations	Construction and operation of power plants, thermal heating services
Percentage of equity interest held, Interest	70.00%
Percentage of equity interest held, Voting	70.00%
Huaneng Hunan Guidong Wind Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 140,000,000
Business nature and scope of operations	Investment, construction, operation and management of electricity projects; development and utilization of clean energy resources
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Nanjing Luhe Wind Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 63,800,000
Business nature and scope of operations	Investment, construction, operation, management of electricity projects; development and utilization clean energy resources
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Luoyuan Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 1,000,000,000
Business nature and scope of operations	Construction, operation and management of power plants and related projects
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Lingang (Tianjin) Gas Co-generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 180,000,000
Business nature and scope of operations	Providing generation and supply
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Lingang (Tianjin) Heat Co-generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held indirectly
Registered capital	¥ 5,000,000
Business nature and scope of operations	Providing thermal energy and cold energy services, supplying steam and hot water(except portable water), plumbing pipe installation and repair, energy engineering construction
Percentage of equity interest held, Interest	66.00%
Percentage of equity interest held, Voting	66.00%
Huaneng Anhui Huaining Wind Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 122,000,000
Business nature and scope of operations	Investment, construction and operation of electricity projects, development and utilization of clean energy resources
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Mianchi Co-generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 570,000,000
Business nature and scope of operations	Construction, operation and management of coal-fired plants and related projects
Percentage of equity interest held, Interest	60.00%
Percentage of equity interest held, Voting	60.00%
Huaneng Yingkou Xianrendao Co-generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 277,690,000
Business nature and scope of operations	Power generation and supply, development and utilization of clean energy resources
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Nanjing Xingang Comprehensive Energy Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 10,000,000
Business nature and scope of operations	Thermal generation and supply, power distribution and sales
Percentage of equity interest held, Interest	65.00%
Percentage of equity interest held, Voting	65.00%
Huaneng Changxing Photovoltaic Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 16,000,000
Business nature and scope of operations	Construction and operation of distributed photovoltaic power generation plants and related projects
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Rudong Baxianjiao Offshore Wind Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 610,000,000
Business nature and scope of operations	Infrastructure construction of wind power plants
Percentage of equity interest held, Interest	70.00%
Percentage of equity interest held, Voting	70.00%
Huaneng Guilin Gas Distributed Energy Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 267,450,000
Business nature and scope of operations	Construction, operation and management of power plants thermal management and related projects
Percentage of equity interest held, Interest	80.00%
Percentage of equity interest held, Voting	80.00%
Huaneng (Dalian) Co-generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 12,500,000
Business nature and scope of operations	Construction, operation and management of co-generation power plants and related projects
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Zhongxiang Wind Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 10,000,000
Business nature and scope of operations	Construction, operation and management of wind power plants and related projects
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Guanyun Co-generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 15,000,000
Business nature and scope of operations	Construction, operation and management of co-generation power plants, heating network and expansion engineering
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng International Power Hongkong Limited Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	Hong Kong
Type of interest held	held directly
Registered capital | shares	100,000		100,000
Business nature and scope of operations	Development, construction management and operation of power supply, coal projects; related investment and financing businesses
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Tuas Power Generation Pte. Ltd. ("TPG") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	Singapore
Type of interest held	held indirectly
Registered capital | $			$ 1,183,000,001
Business nature and scope of operations	Power generation and related by-products, derivatives, developing power supply resources, operating electricity and power sales
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
TP Utilities Pte. Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	Singapore
Type of interest held	held indirectly
Registered capital | $			255,500,001
Business nature and scope of operations	Provision of energy, power supply, thermal supply, management of industrial water and waste
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
TP-STM Water Resources Pte. Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	Singapore
Type of interest held	held indirectly
Registered capital | $			$ 4,500,000
Business nature and scope of operations	Providing desalinated water
Percentage of equity interest held, Interest	60.00%
Percentage of equity interest held, Voting	60.00%
Huaneng Shanxi Taihang Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 1,086,440,000
Business nature and scope of operations	Pre-services related to coal-fired generation
Percentage of equity interest held, Interest	60.00%
Percentage of equity interest held, Voting	60.00%
Huaneng Mianchi Clean Energy Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 10,000,000
Business nature and scope of operations	Wind Power generation, new energy development and utilization
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Zhuolu Clean Energy Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 78,878,100
Business nature and scope of operations	Construction, operation and management of power plants and related projects
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Tongwei Wind Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 248,000,000
Business nature and scope of operations	Construction, operation and management of wind power plants and related projects
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Yizheng Wind Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 200,000,000
Business nature and scope of operations	Wind power plants design, construction, management and maintenance
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Yancheng Dafeng New Energy Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 5,000,000
Business nature and scope of operations	Construction, operation and management of wind power, photovoltaic power plant
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Shanyin Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 1,573,000,000
Business nature and scope of operations	Construction, operation and management of power plants and related projects
Percentage of equity interest held, Interest	51.00%
Percentage of equity interest held, Voting	51.00%
Huaneng Jiangsu Energy Sales Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 200,000,000
Business nature and scope of operations	Purchase and sales of electricity and thermal energy, water supply services, construction and operation of electricity distribution network and heating pipe network
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Liaoning Energy Sales Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 200,000,000
Business nature and scope of operations	Sales of electricity, thermal energy and circulating hot water
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Guangdong Energy Sales Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 200,000,000
Business nature and scope of operations	Power and thermal supply, energy conservation energy technology service, transmission and substation projects contracting
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Suizhou Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 50,000,000
Business nature and scope of operations	Construction, operation and management of power plants, production and sales of electricity and heating
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Changle Photovoltaic Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 10,000,000
Business nature and scope of operations	Construction, operation and management of photovoltaic power plants and related projects
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Longyan Wind Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 10,000,000
Business nature and scope of operations	Construction, operation and management of wind power plants and related projects
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Yunnan Malong Wind Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 10,000,000
Business nature and scope of operations	Construction, operation and management of wind power plants and related projects
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Dandong Photovoltaic Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 17,720,000
Business nature and scope of operations	Investment, construction operation and management of electricity projects, development and utilization of clean energy resources
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Dongguan Combined Cycle Co-generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 50,000,000
Business nature and scope of operations	Investment of electricity projects, thermal power generation and supply, investment in heating pipe network, development and utilization of clean energy resources
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Yangxi Photovoltaic Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 62,500,000
Business nature and scope of operations	Photovoltaic electric power production and sales
Percentage of equity interest held, Interest	80.00%
Percentage of equity interest held, Voting	80.00%
Huaneng Chongqing Fengjie Wind Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 10,000,000
Business nature and scope of operations	Electricity production and supply; development and utilization of clean energy resources
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Changxing Hongqiao Photovoltaic Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 10,000,000
Business nature and scope of operations	Electricity production and supply; development and utilization of clean energy resources
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Jingxing Photovoltaic Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 100,000
Business nature and scope of operations	Investment, construction and management of photovoltaic power plants
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Shanxi Energy Sales Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 210,000,000
Business nature and scope of operations	Electricity supply and sales, investment, construction, operation and repair of regional transmission and distribution network
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Chongqing Energy Sales Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 210,000,000
Business nature and scope of operations	Operation of natural gas, electric energy and thermal energy products sales
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Chongqing Luohuang Energy Sales Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held indirectly
Registered capital	¥ 210,000,000
Business nature and scope of operations	Sales and supply of electricity, sales of thermal products
Percentage of equity interest held, Interest	90.00%
Percentage of equity interest held, Voting	90.00%
Huaneng Chongqing Tongliang Energy Sales Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held indirectly
Registered capital	¥ 210,000,000
Business nature and scope of operations	Operation of natural gas, sales of electricity supply, sales of thermal products
Percentage of equity interest held, Interest	51.00%
Percentage of equity interest held, Voting	51.00%
Huaneng Hunan Energy Sales Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 210,000,000
Business nature and scope of operations	Electricity and thermal energy products sales
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Jiangxi Energy Sales Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 210,000,000
Business nature and scope of operations	Construction, operation and management of heating and power supply facilities
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Hebei Energy Sales Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 210,000,000
Business nature and scope of operations	Construction, installation, maintenance and repair of heating and power supply facilities
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Henan Energy Sales Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 210,000,000
Business nature and scope of operations	Sales of electricity, heating, gas and other energy products
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Handan Heating Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 100,000,000
Business nature and scope of operations	Construction, operation and maintenance of heating sources and pipe network
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng (Huzhou Development Zone) Photovoltaic Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 10,000,000
Business nature and scope of operations	Photovoltaic power generation; power supply, purchase and sales
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Fujian Energy Sales Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 210,000,000
Business nature and scope of operations	Sales of electricity, heating, gas and other energy products
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Hubei Energy Sales Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 210,000,000
Business nature and scope of operations	Sales of electricity, heating, gas and other energy products
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng (Sanming) Clean Energy Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 500,000
Business nature and scope of operations	Construction, operation and management of wind power, photovoltaic power station and related projects
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Yueyang Xingang Photovoltaic Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 16,000,000
Business nature and scope of operations	Construction, operation and management of electricity projects, development and utilization of clean energy
Percentage of equity interest held, Interest	60.00%
Percentage of equity interest held, Voting	60.00%
Huaneng Shanghai Energy Sales Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 210,000,000
Business nature and scope of operations	Power supply (except construction and operation of electricity network), technology services in energy conservation and environmental protection
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Yushe Photovoltaic Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 10,000,000
Business nature and scope of operations	Production and supply of electric power
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Anhui Energy Sales Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 210,000,000
Business nature and scope of operations	Sales of electricity, heating gas and other energy products
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng (Shanghai) Power Maintenance Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 200,000,000
Business nature and scope of operations	Contracting installation and repair of electricity facilities
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Guanyun Clean Energy Power Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held directly	[4]
Registered capital	¥ 26,000,000	[4]
Business nature and scope of operations	Sales of electricity	[4]
Percentage of equity interest held, Interest	100.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Jianchang Photovoltaic Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held directly	[4]
Registered capital	¥ 10,000,000	[4]
Business nature and scope of operations	Production and supply of electricity, development and utilization of clean energy resources	[4]
Percentage of equity interest held, Interest	100.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Chaoyang Photovoltaic Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held directly	[4]
Registered capital	¥ 10,000,000	[4]
Business nature and scope of operations	Production and supply of electricity, development and utilization of clean energy resources	[4]
Percentage of equity interest held, Interest	100.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng (Luoyuan) Port Limited Company (x) [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4],[5]
Type of interest held	held directly	[4],[5]
Registered capital	¥ 169,710,000	[4],[5]
Business nature and scope of operations	Port management, investment and development	[4],[5]
Percentage of equity interest held, Interest	100.00%	[4],[5]
Percentage of equity interest held, Voting	100.00%	[4],[5]
Huaneng Shijiazhuang Energy Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held directly	[4]
Registered capital	¥ 60,000,000	[4]
Business nature and scope of operations	Production and supply of heating, purchase and sales of electricity	[4]
Percentage of equity interest held, Interest	66.60%	[4]
Percentage of equity interest held, Voting	66.60%	[4]
Huaneng Jiangyin Combined Cycle Co-generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held directly	[4]
Registered capital	¥ 600,000,000	[4]
Business nature and scope of operations	Production and supply of electricity, production and supply of heating	[4]
Percentage of equity interest held, Interest	51.00%	[4]
Percentage of equity interest held, Voting	51.00%	[4]
Huaneng Anyang Energy Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held directly	[4]
Registered capital	¥ 10,000,000	[4]
Business nature and scope of operations	Production and supply of electricity, production and supply of heating	[4]
Percentage of equity interest held, Interest	100.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Shanxi Comprehensive Energy Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held directly	[4]
Registered capital	¥ 120,000,000	[4]
Business nature and scope of operations	Production and supply of electricity, production and supply of heating	[4]
Percentage of equity interest held, Interest	100.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Zhanhua Photovoltaic Power Generation Limited Company ("Zhanhua Photovoltaic Company") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4],[6]
Type of interest held	held indirectly	[4],[6]
Registered capital	¥ 145,790,000	[4],[6]
Business nature and scope of operations	Photovoltaic power generation	[4],[6]
Percentage of equity interest held, Interest	46.40%	[4],[6]
Percentage of equity interest held, Voting	58.00%	[4],[6]
Huaneng Weishan New Energy Limited Company ("Weishan New Energy") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4],[6]
Type of interest held	held indirectly	[4],[6]
Registered capital	¥ 167,000,000	[4],[6]
Business nature and scope of operations	Investment, production and sales of new energy power generation projects	[4],[6]
Percentage of equity interest held, Interest	40.00%	[4],[6]
Percentage of equity interest held, Voting	100.00%	[4],[6]
Huaneng Ruyi (Helan) New Energy Limited Company ("Helan New Energy") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4],[6]
Type of interest held	held indirectly	[4],[6]
Registered capital	¥ 19,000,000	[4],[6]
Business nature and scope of operations	Photovoltaic power generation	[4],[6]
Percentage of equity interest held, Interest	40.00%	[4],[6]
Percentage of equity interest held, Voting	100.00%	[4],[6]
Huaneng Dezhou New Energy Limited Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4],[6]
Type of interest held	held indirectly	[4],[6]
Registered capital	¥ 2,500,000	[4],[6]
Business nature and scope of operations	Photovoltaic power generation, wind power generation, biomass power generation	[4],[6]
Percentage of equity interest held, Interest	80.00%	[4],[6]
Percentage of equity interest held, Voting	100.00%	[4],[6]
Zhaodong Huaneng Dechang Solar Power Generation Limited Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 30,810,000	[4]
Business nature and scope of operations	Solar energy generation and technology promotion, repair electricity facilities	[4]
Percentage of equity interest held, Interest	100.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Daqing Huaneng Shuangyu Solar Power Generation Limited Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 20,000,000	[4]
Business nature and scope of operations	Solar energy generation	[4]
Percentage of equity interest held, Interest	100.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Taizhouwan Juji District Photovoltaic Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held directly	[4]
Registered capital	¥ 100,000	[4]
Business nature and scope of operations	Production and supply of electricity projects	[4]
Percentage of equity interest held, Interest	100.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Mingguang Wind Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held directly	[4]
Registered capital	¥ 10,000,000	[4]
Business nature and scope of operations	Production and supply of electricity; investment, construction, operation and management of electricity projects	[4]
Percentage of equity interest held, Interest	100.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Guangxi Energy Sales Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held directly	[4]
Registered capital	¥ 210,000,000	[4]
Business nature and scope of operations	Power supply, contracting installation and repair of electricity facilities	[4]
Percentage of equity interest held, Interest	100.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Ruzhou Clean Energy Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held directly	[4]
Registered capital	¥ 80,000,000	[4]
Business nature and scope of operations	Production and supply of investment, electricity projects, construction and operation of electricity projects	[4]
Percentage of equity interest held, Interest	95.00%	[4]
Percentage of equity interest held, Voting	95.00%	[4]
Huaneng Hunan Lianping Wind Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held directly	[4]
Registered capital	¥ 173,920,000	[4]
Business nature and scope of operations	Production and supply of electricity	[4]
Percentage of equity interest held, Interest	80.00%	[4]
Percentage of equity interest held, Voting	80.00%	[4]
Huaneng Abagaqi Clean Energy Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held directly	[4]
Registered capital	¥ 100,000	[4]
Business nature and scope of operations	Production, supply and sales of electricity and thermal energy	[4]
Percentage of equity interest held, Interest	100.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Jiashan Photovoltaic Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held directly	[4]
Registered capital	¥ 10,000,000	[4]
Business nature and scope of operations	Production and supply of electricity	[4]
Percentage of equity interest held, Interest	100.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Zhejiang Energy Sales Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held directly	[4]
Registered capital	¥ 210,000,000	[4]
Business nature and scope of operations	New energy technology development, technology consulting, transferring of results	[4]
Percentage of equity interest held, Interest	100.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Guangdong Shantou Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held directly	[4]
Registered capital	¥ 10,000,000	[4]
Business nature and scope of operations	Production and supply of electricity and thermal energy	[4]
Percentage of equity interest held, Interest	100.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Shantou Photovoltaic Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held directly	[4]
Registered capital	¥ 100,000	[4]
Business nature and scope of operations	Production and supply of electricity	[4]
Percentage of equity interest held, Interest	100.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Guigang Clean Energy Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held directly	[4]
Registered capital	¥ 10,000,000	[4]
Business nature and scope of operations	Production and supply of electricity, investment, construction and operation of electricity projects	[4]
Percentage of equity interest held, Interest	100.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Changxing Jiapu Photovoltaic Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held directly	[4]
Registered capital	¥ 10,000,000	[4]
Business nature and scope of operations	Production and supply of electricity, investment in electricity projects	[4]
Percentage of equity interest held, Interest	100.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Hainan Energy Sales Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 210,000,000	[4]
Business nature and scope of operations	Construction and operation of heat and power supply facilities, operation of heat resources, heat network and power supply facilities	[4]
Percentage of equity interest held, Interest	91.80%	[4]
Percentage of equity interest held, Voting	91.80%	[4]
Huaneng Yangpu Co-generation Limited Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 802,222,000	[4]
Business nature and scope of operations	Investment, construction operation and management of electricity projects and heat pipe network	[4]
Percentage of equity interest held, Interest	82.62%	[4]
Percentage of equity interest held, Voting	82.62%	[4]

[1] According to its article of association, the other shareholder who holds the remaining equity interests of Shidongkou Power entrusts the Company to exercise all its voting rights in relation to the operation and financial policies of Shidongkou Power. Accordingly, the Company has control over Shidongkou Power.

[2] The Company holds 90% interest in Liangjiang Power, and Liangjiang Power holds 60% interest in Huaqing Energy. Therefore, the company indirectly holds 54% equity interest in Huaqing Energy.

[3] Suzhou Combined Cycle Co-generation Limited Company was acquired by Suzhou Thermal Power, another subsidiary of the Company, which was accounted for as an equity transaction, resulting in reclassification of RMB28 million from non-controlling interest to reserve.

[4] These companies were newly established in 2017.

[5] The Company acquired 49% non-controlling interests of Huaneng (Luoyuan) Port Limited Company from the other equity holder, which was accounted for as equity transaction, with the difference of RMB4 million between consideration paid and derecognised non-controlling interest recorded in reserve.

[6] These companies are subsidiaries of Shandong Power. The Company holds 80% interest in Shandong Power. Thus, the Company indirectly holds 80% interest in these companies through their parent company. Zhanhua Photovoltaic Company is a newly established subsidiary of Shandong Power in 2017. Zhanhua New Energy, a wholly-owned subsidiary of Shandong Power, holds 58% equity interests in Zhanhua Photovoltaic Company. Thus, the Company indirectly holds 46.4% equity interests in Zhanhua Photovoltaic Company. Weishan New Energy and Helan New Energy are wholly-owned subsidiaries of Ruyi Coal Power, a 50% owned subsidiary of Shandong Power. As a result, the Company indirectly holds 40% interest in Weishan New Energy and Helan New Energy. Shandong Power directly holds 58% interest in Shandong Fuel Company and Shandong Maintenance Company; meanwhile, Shandong Power indirectly holds a total of 37.68% equity interests in Shandong Fuel Company and Shandong Maintenance Company respectively through its own subsidiaries: Baiyanghe Power, Huangtai Power, Yantai Power, Linyi Power, Liaocheng Co-generation and Yunhe Power. Thus, the Company indirectly holds 76.55% interest in Shandong Maintenance Company and Shandong Fuel Company respectively. The Company directly holds 44% equity interests in Rizhao Power and Shandong Power directly holds 56% interest in Rizhao Power; Thus, the Company holds 88.8% interest in Rizhao Power; Jiaxiang Power, Qufu Co-generation, Jining Co-generation are wholly-owned subsidiaries of Ruyi Coal Power. Thus, the Company indirectly holds 40% interest in Ruyi Coal Power, Jiaxiang Power, Qufu Co-generation and Jining Co-generation; In according to the voting in concert agreement entered into among the Shandong Power and other equity holders of Laiwu Power, Ruyi Coal Power, Rongcheng New Energy, Liaocheng Co-generation, the other equity holders agreed to vote the same in respect of significant financial and operating decisions made by the Shandong Power. As a result, the Company has control over these companies.

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Investments in subsidiaries (Subsidiaries acquired from business combinations under common control) (Detail)	12 Months Ended
	Dec. 31, 2017 CNY (¥) shares
Huaneng (Suzhou Industrial Park) Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 632,840,000
Business nature and scope of operation	Power generation
Percentage of equity interest held, Interest	75.00%
Percentage of equity interest held, Voting	75.00%
Huaneng Qinbei Power Generation Co., Ltd. ("Qinbei Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 1,540,000,000
Business nature and scope of operation	Power generation
Percentage of equity interest held, Interest	60.00%
Percentage of equity interest held, Voting	60.00%
Huaneng Yushe Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 615,760,000
Business nature and scope of operation	Power generation, power distribution, sales of power
Percentage of equity interest held, Interest	60.00%
Percentage of equity interest held, Voting	60.00%
Huaneng Hunan Yueyang Power Generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 1,935,000,000
Business nature and scope of operation	Power generation
Percentage of equity interest held, Interest	55.00%
Percentage of equity interest held, Voting	55.00%
Huaneng Chongqing Luohuang Power Generation Limited Liability Company ("Luohuang Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 1,748,310,000
Business nature and scope of operation	Power generation
Percentage of equity interest held, Interest	60.00%
Percentage of equity interest held, Voting	60.00%
Huaneng Pingliang Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 924,050,000
Business nature and scope of operation	Power generation
Percentage of equity interest held, Interest	65.00%
Percentage of equity interest held, Voting	65.00%
Huaneng Nanjing Jinling Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 1,513,136,000
Business nature and scope of operation	Power generation
Percentage of equity interest held, Interest	60.00%
Percentage of equity interest held, Voting	60.00%
Huaneng Qidong Wind Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 391,738,500
Business nature and scope of operation	Development of wind power projects, production and sales of electricity
Percentage of equity interest held, Interest	65.00%
Percentage of equity interest held, Voting	65.00%
Tianjin Huaneng Yangliuqing Co-generation Limited Liability Company ("Yangliuqing Co-generation") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 1,537,130,909
Business nature and scope of operation	Power generation, heat supply, facilities installation, maintenance and related services
Percentage of equity interest held, Interest	55.00%
Percentage of equity interest held, Voting	55.00%
Huaneng Beijing Co-generation Limited Liability Company ("Beijing Co-generation") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[1]
Type of interest held	held directly	[1]
Registered capital	¥ 3,702,090,000	[1]
Business nature and scope of operation	Construction and operation of power plants and related construction projects	[1]
Percentage of equity interest held, Interest	41.00%	[1]
Percentage of equity interest held, Voting	66.00%	[1]
Huaneng Wuhan Power Generation Co., Ltd. ("Wuhan Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 1,478,461,500
Business nature and scope of operation	Investment, construction, operation and management of electricity projects, development and utilization of clean energy resources
Percentage of equity interest held, Interest	75.00%
Percentage of equity interest held, Voting	75.00%
Huaneng Anyuan Power Generation Co., Ltd. ("Anyuan Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 1,175,117,300
Business nature and scope of operation	Construction and operation of power plants and related construction projects, Production of electricity
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Hualiangting Hydropower Co., Ltd. ("Hualiangting Hydropower") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 50,000,000
Business nature and scope of operation	Generation and transfer of power supply, water supply (irrigation)
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Chaohu Power Generation Co., Ltd. ("Chaohu Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[2]
Type of interest held	held directly	[2]
Registered capital	¥ 840,000,000	[2]
Business nature and scope of operation	Construction, operation, management of electricity projects, development and utilization of clean energy resources	[2]
Percentage of equity interest held, Interest	60.00%	[2]
Percentage of equity interest held, Voting	70.00%	[2]
Huaneng Jingmen Thermal Power Co., Ltd. ("Jingmen Thermal Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 780,000,000
Business nature and scope of operation	Thermal power, power development and other service
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Enshi Qingjiang Dalongtan Hydropower Development Co., Ltd. ("Dalongtan Hydropower") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 76,000,000
Business nature and scope of operation	Hydropower development, production and management of electric power, urban water supply
Percentage of equity interest held, Interest	97.00%
Percentage of equity interest held, Voting	97.00%
Huaneng Suzhou Thermal Power Co., Ltd. ("Suzhou Thermal Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[3]
Type of interest held	held directly	[3]
Registered capital	¥ 600,000,000	[3]
Business nature and scope of operation	Construction, operation and management of electricity projects, development and utilization of clean energy	[3]
Percentage of equity interest held, Interest	53.45%	[3]
Percentage of equity interest held, Voting	100.00%	[3]
Huaneng Hainan Power Generation Limited Company ("Hainan Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 1,326,419,587
Business nature and scope of operation	Investment, construction operation of various power plants, regular energy and new energy development
Percentage of equity interest held, Interest	91.80%
Percentage of equity interest held, Voting	91.80%
Huaneng Ruijin Power Generation Co., Ltd. ("Ruijin Power Generation") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 536,923,299
Business nature and scope of operation	Construction, operation, management of electricity projects, development and utilization of clean energy
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Yingcheng Thermal Power Co., Ltd. ("Yingcheng Thermal Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 650,000,000
Business nature and scope of operation	Construction and operation of power plants and production, sales of power and heat
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Heilongjiang Power Generation Limited Company ("Heilongjiang Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 783,350,000
Business nature and scope of operation	Development, investment, construction, production and management of power (thermal) projects
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Hegang Power Generation Limited Company ("Hegang Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held indirectly
Registered capital	¥ 1,092,550,000
Business nature and scope of operation	The electricity power construction, energy conservation and development projects, heat production and supply
Percentage of equity interest held, Interest	64.00%
Percentage of equity interest held, Voting	64.00%
Huaneng Xinhua Power Generation Limited Liability Company ("Xinhua Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held indirectly
Registered capital	¥ 284,880,000
Business nature and scope of operation	Power generation, power equipment repair
Percentage of equity interest held, Interest	70.00%
Percentage of equity interest held, Voting	70.00%
Huaneng Tongjiang Wind Power Generation Limited Company ("Tongjiang Wind Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held indirectly
Registered capital	¥ 330,000,000
Business nature and scope of operation	Wind power generation, wind power plants operation, planning and design
Percentage of equity interest held, Interest	82.85%
Percentage of equity interest held, Voting	82.85%
Huaneng Daqing Thermal Power Limited Company ("Daqing Thermal Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held indirectly
Registered capital	¥ 630,000,000
Business nature and scope of operation	Power generation, thermal production and supply
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Daqing Luyuan Wind Power Generation Limited Company ("Luyuan Wind Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held indirectly
Registered capital	¥ 451,000,000
Business nature and scope of operation	Wind power generation
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Yichun Thermal Power Limited Company ("Yichun Thermal Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held indirectly
Registered capital	¥ 534,000,000
Business nature and scope of operation	Power construction, production and sales, thermal production and sales
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Heilongjiang Energy Sales Limited Company ("Heilongjiang Energy Sales") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held indirectly
Registered capital	¥ 210,000,000
Business nature and scope of operation	Power supply, production of heat and hot water
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Zhaodong Huaneng Thermal Power Limited Company ("Zhaodong Thermal Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held indirectly
Registered capital	¥ 10,000,000
Business nature and scope of operation	Heating production and supply
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Jilin Power Generation Limited Company ("Jilin Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 1,917,130,000
Business nature and scope of operation	Power (thermal) projects, development of new energy projects investment, construction, production, operation and sales
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Linjiang Jubao Hydropower Limited Company ("Jubao Hydropower") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held indirectly
Registered capital	¥ 20,000,000
Business nature and scope of operation	Hydropower development and operation, construction and operation of photovoltaic power generation
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Jilin Energy Sales Limited Company ("Jilin Energy Sales") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held indirectly
Registered capital	¥ 210,000,000
Business nature and scope of operation	Thermal (cold) production and supply, power supply
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Jilin Biological Power Generation Limited Company ("Jilin Biological Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held indirectly
Registered capital	¥ 183,800,000
Business nature and scope of operation	Biomass power generation
Percentage of equity interest held, Interest	100.00%
Percentage of equity interest held, Voting	100.00%
Huaneng Shandong Power Generation Limited Company ("Shandong Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 4,241,460,000
Business nature and scope of operation	Power (thermal) project development, investment, construction and management
Percentage of equity interest held, Interest	80.00%
Percentage of equity interest held, Voting	80.00%
Huaneng Jining New Energy Limited Company ("Jining New Energy") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 38,000,000	[4]
Business nature and scope of operation	Investment, construction and management of photovoltaic and wind power projects	[4]
Percentage of equity interest held, Interest	80.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Zibo Boshan Photovoltaic Power Limited Company ("Zibo Photovoltaic") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 22,000,000	[4]
Business nature and scope of operation	Solar power generation, sales	[4]
Percentage of equity interest held, Interest	80.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Rizhao Thermal Power Limited Company ("Rizhao Thermal Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 52,000,000	[4]
Business nature and scope of operation	Urban heat construction, maintenance and operation design and construction of heat engineering	[4]
Percentage of equity interest held, Interest	80.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Laiwu New Energy Limited Company ("Laiwu New Energy") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 68,000,000	[4]
Business nature and scope of operation	Photovoltaic power and wind power generation	[4]
Percentage of equity interest held, Interest	80.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Shandong Sishui New Energy Limited Company ("Sishui New Energy") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 36,000,000	[4]
Business nature and scope of operation	Solar energy grid connected generation	[4]
Percentage of equity interest held, Interest	80.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Shandong Electric And Thermal Power Marketing Limited Company ("Shandong Power Marketing") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 200,000,000	[4]
Business nature and scope of operation	Sales and service of power and heating products, investment in power industry	[4]
Percentage of equity interest held, Interest	80.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Shandong Information Technology Limited Company ("Shandong Power Information Company") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 80,000,000	[4]
Business nature and scope of operation	Information technology and management consulting services	[4]
Percentage of equity interest held, Interest	80.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Penglai Wind Power Generation Limited Company ("Penglai Wind Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 177,210,000	[4]
Business nature and scope of operation	Development, investment, construction and management of wind power projects	[4]
Percentage of equity interest held, Interest	80.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Zhanhua New Energy Limited Company ("Zhanhua New Energy") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 235,298,200	[4]
Business nature and scope of operation	Wind power, photovoltaic power generation	[4]
Percentage of equity interest held, Interest	80.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Yantai Bajiao Thermal Power Limited Company ("Bajiao Thermal Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 540,000,000	[4]
Business nature and scope of operation	Power generation projects preparation	[4]
Percentage of equity interest held, Interest	80.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Weihai Port Photovoltaic Power Generation Limited Company ("Port Photovoltaic") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 24,960,000	[4]
Business nature and scope of operation	Photovoltaic power generation projects development and construction, electricity sales	[4]
Percentage of equity interest held, Interest	80.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Zibo Baiyanghe Power Generation Limited Company ("Baiyanghe Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 1,098,567,344	[4]
Business nature and scope of operation	Power production, on-grid sales, thermal production and supply	[4]
Percentage of equity interest held, Interest	80.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Yantai Power Generation Limited Company ("Yantai Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 547,479,100	[4]
Business nature and scope of operation	Production and sales of electricity power and heat	[4]
Percentage of equity interest held, Interest	80.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Jinan Huangtai Power Generation Limited Company ("Huangtai Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 1,391,878,400	[4]
Business nature and scope of operation	Electricity power production, heating management	[4]
Percentage of equity interest held, Interest	72.00%	[4]
Percentage of equity interest held, Voting	90.00%	[4]
Huaneng Dezhou Thermal Power Limited Company ("Dezhou Thermal Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 20,000,000	[4]
Business nature and scope of operation	Urban heat construction, maintenance and operation design and construction of heat engineering	[4]
Percentage of equity interest held, Interest	68.00%	[4]
Percentage of equity interest held, Voting	85.00%	[4]
Huaneng Dongying New Energy Limited Company ("Dongying New Energy") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 87,906,822	[4]
Business nature and scope of operation	Wind power projects development, wind power generation and sales of electricity	[4]
Percentage of equity interest held, Interest	56.00%	[4]
Percentage of equity interest held, Voting	70.00%	[4]
Huaneng Shandong Power Generation Maintenance Technology Limited Company ("Shandong Maintenance Company") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 50,000,000	[4]
Business nature and scope of operation	Power engineering design, construction and construction	[4]
Percentage of equity interest held, Interest	76.55%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Shandong Electric Power Fuel Limited Company ("Shandong Fuel Company") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 100,000,000	[4]
Business nature and scope of operation	Wholesale operation of coal	[4]
Percentage of equity interest held, Interest	76.55%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Shandong Rizhao Power Generation Limited Company ("Rizhao Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 1,245,587,900	[4]
Business nature and scope of operation	Heat, engaged in power business	[4]
Percentage of equity interest held, Interest	88.80%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Laiwu Power Generation Limited Company ("Laiwu Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 1,800,000,000	[4]
Business nature and scope of operation	Power production	[4]
Percentage of equity interest held, Interest	64.00%	[4]
Percentage of equity interest held, Voting	80.00%	[4]
Huaneng Shandong Ruyi Coal Power Limited Company ("Ruyi Coal Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 1,294,680,000	[4]
Business nature and scope of operation	Development, investment, construction, operation and management of electricity power and coal	[4]
Percentage of equity interest held, Interest	40.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Jiaxiang Power Generation Limited Company ("Jiaxiang Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 646,680,000
Business nature and scope of operation	Power generation, electrical equipment maintenance	[4]
Percentage of equity interest held, Interest	40.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Qufu Co-generation Limited Company ("Qufu Co-generation") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 300,932,990	[4]
Business nature and scope of operation	Sales and production of electric power, thermal power	[4]
Percentage of equity interest held, Interest	40.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Jining Hi-Tech Zone Co-generation Limited Company ("Jining Co-generation") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 118,699,760	[4]
Business nature and scope of operation	Heat supply and power generation	[4]
Percentage of equity interest held, Interest	40.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Shandong (Hongkong) Investment Limited Company ("Hong Kong Investment") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	Hong Kong	[4]
Type of interest held	held indirectly	[4]
Registered capital | shares	10,000	[4]
Business nature and scope of operation	Investment	[4]
Percentage of equity interest held, Interest	80.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Shandong Silk Road International Power Limited Company ("Shandong Silk Road") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 35,000,000	[4]
Business nature and scope of operation	Contracting overseas projects and domestic international bidding projects, construction and operation of power project	[4]
Percentage of equity interest held, Interest	80.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Shandong Changdao Wind Power Generation Limited Liability Company ("Changdao Wind Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 33,500,000	[4]
Business nature and scope of operation	Wind power, on-grid sales	[4]
Percentage of equity interest held, Interest	48.00%	[4]
Percentage of equity interest held, Voting	60.00%	[4]
Huaneng Rongcheng New Energy Co., Ltd. ("Rongcheng New Energy") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 36,540,000	[4]
Business nature and scope of operation	Wind power generation	[4]
Percentage of equity interest held, Interest	48.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Jining Yunhe Power Generation Co., Ltd. ("Yunhe Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 696,355,300	[4]
Business nature and scope of operation	Electrical (thermal) production and on-grid sales, technology consulting and services	[4]
Percentage of equity interest held, Interest	78.68%	[4]
Percentage of equity interest held, Voting	98.35%	[4]
Huaneng Linyi Power Generation Limited Company ("Linyi Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 1,093,313,400	[4]
Business nature and scope of operation	Power generation	[4]
Percentage of equity interest held, Interest	60.00%	[4]
Percentage of equity interest held, Voting	75.00%	[4]
Liaocheng Changrun National Electric Heating Limited Company ("Liaocheng Changrun") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 130,000,000	[4]
Business nature and scope of operation	Heat operation, installation and repair of water, electricity, heating	[4]
Percentage of equity interest held, Interest	60.00%	[4]
Percentage of equity interest held, Voting	75.00%	[4]
Linyi Lantian Thermal Power Limited Company ("Lantian Thermal Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 36,000,000	[4]
Business nature and scope of operation	Heat supply, maintenance of thermal power network, power sales, installation and maintenance of distribution facilities	[4]
Percentage of equity interest held, Interest	54.40%	[4]
Percentage of equity interest held, Voting	68.00%	[4]
Yantai 500 Heating Limited Company ("Yantai 500") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 20,500,000	[4]
Business nature and scope of operation	Central heat services, plumbing and pipe installation services	[4]
Percentage of equity interest held, Interest	64.00%	[4]
Percentage of equity interest held, Voting	80.00%	[4]
Huaneng Liaocheng Co-generation Limited Company ("Liaocheng Co-generation) [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC	[4]
Type of interest held	held indirectly	[4]
Registered capital	¥ 610,670,000	[4]
Business nature and scope of operation	Power, heat production and sales	[4]
Percentage of equity interest held, Interest	60.00%	[4]
Percentage of equity interest held, Voting	100.00%	[4]
Huaneng Henan Zhongyuan Gas Power Generation Co., Ltd. ("Zhongyuan Gas") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	PRC
Type of interest held	held directly
Registered capital	¥ 400,000,000
Business nature and scope of operation	Investment, construction, operation and management of power projects, thermal supply, development and utilization of clean energy resources
Percentage of equity interest held, Interest	90.00%
Percentage of equity interest held, Voting	90.00%

[1] Pursuant to an agreement entered into between the Company and another shareholder, the Company is entrusted to vote the 25% voting rights held by the other shareholder as long as the Company remains as the largest shareholder of Beijing Co-generation. Thus, the Company has majority voting rights required by the article of association to control the operation and financial policies of Beijing Co-generation. Accordingly, the Company has control over Beijing Co-generation.

[2] According to the voting in concert agreement entered into between the Company and one shareholder with 10% equity interests in Chaohu Power, the shareholder agreed to vote the same in respect of significant financial and operating decisions made by the Company. As a result, the Company has control over Chaohu Power.

[3] According to the voting in concert agreement entered into between the Company and the other two shareholders in Suzhou Thermal Power, the shareholders agreed to vote the same in respect of significant financial and operating decisions made by the Company. As a result, the Company has control over Suzhou Thermal Power.

[4] These companies are subsidiaries of Shandong Power. The Company holds 80% interest in Shandong Power. Thus, the Company indirectly holds 80% interest in these companies through their parent company. Zhanhua Photovoltaic Company is a newly established subsidiary of Shandong Power in 2017. Zhanhua New Energy, a wholly-owned subsidiary of Shandong Power, holds 58% equity interests in Zhanhua Photovoltaic Company. Thus, the Company indirectly holds 46.4% equity interests in Zhanhua Photovoltaic Company. Weishan New Energy and Helan New Energy are wholly-owned subsidiaries of Ruyi Coal Power, a 50% owned subsidiary of Shandong Power. As a result, the Company indirectly holds 40% interest in Weishan New Energy and Helan New Energy. Shandong Power directly holds 58% interest in Shandong Fuel Company and Shandong Maintenance Company; meanwhile, Shandong Power indirectly holds a total of 37.68% equity interests in Shandong Fuel Company and Shandong Maintenance Company respectively through its own subsidiaries: Baiyanghe Power, Huangtai Power, Yantai Power, Linyi Power, Liaocheng Co-generation and Yunhe Power. Thus, the Company indirectly holds 76.55% interest in Shandong Maintenance Company and Shandong Fuel Company respectively. The Company directly holds 44% equity interests in Rizhao Power and Shandong Power directly holds 56% interest in Rizhao Power; Thus, the Company holds 88.8% interest in Rizhao Power; Jiaxiang Power, Qufu Co-generation, Jining Co-generation are wholly-owned subsidiaries of Ruyi Coal Power. Thus, the Company indirectly holds 40% interest in Ruyi Coal Power, Jiaxiang Power, Qufu Co-generation and Jining Co-generation; In according to the voting in concert agreement entered into among the Shandong Power and other equity holders of Laiwu Power, Ruyi Coal Power, Rongcheng New Energy, Liaocheng Co-generation, the other equity holders agreed to vote the same in respect of significant financial and operating decisions made by the Shandong Power. As a result, the Company has control over these companies.

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Investments in subsidiaries (Subsidiaries acquired from business combinations not under common control) (Detail) - 12 months ended Dec. 31, 2017		CNY (¥)	USD ($)	SGD ($)
Huaneng Weihai Power Generation Limited Liability Company ("Weihai Power") [member]
Disclosure of subsidiaries [line items]
Country of incorporation		PRC
Type of interest held		held directly
Registered capital		¥ 1,822,176,621
Business nature and scope of operation		Power generation
Percentage of equity interest held, Interest		60.00%
Percentage of equity interest held, Voting		60.00%
Huaneng Huaiyin Power Generation Limited Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation		PRC
Type of interest held		held directly
Registered capital		¥ 265,000,000
Business nature and scope of operation		Power generation
Percentage of equity interest held, Interest		100.00%
Percentage of equity interest held, Voting		100.00%
Huade County Daditaihong Wind Power Utilization Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation		PRC
Type of interest held		held directly
Registered capital		¥ 196,400,000
Business nature and scope of operation		Wind power development and utilization
Percentage of equity interest held, Interest		100.00%
Percentage of equity interest held, Voting		100.00%
Huaneng Zhanhua Co-generation Limited Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation		PRC
Type of interest held		held directly
Registered capital		¥ 190,000,000
Business nature and scope of operation		Production and sales of electricity and thermal energy
Percentage of equity interest held, Interest		100.00%
Percentage of equity interest held, Voting		100.00%
Shandong Hualu Sea Transportation Limited Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation		PRC
Type of interest held		held directly
Registered capital		¥ 100,000,000
Business nature and scope of operation		Cargo transportation along domestic coastal areas, goods storage
Percentage of equity interest held, Interest		53.00%
Percentage of equity interest held, Voting		53.00%
Huaneng Qingdao Port Limited Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation		PRC
Type of interest held		held directly
Registered capital		¥ 219,845,000
Business nature and scope of operation		Loading and conveying warehousing, conveying, water carriage materials supply
Percentage of equity interest held, Interest		51.00%
Percentage of equity interest held, Voting		51.00%
Huaneng Yunnan Diandong Energy Limited Liability Company ("Diandong Energy") [member]
Disclosure of subsidiaries [line items]
Country of incorporation		PRC
Type of interest held		held directly
Registered capital		¥ 3,769,140,000
Business nature and scope of operation		Electricity projects investment power generation and sales, coal exploitation and investment
Percentage of equity interest held, Interest		100.00%
Percentage of equity interest held, Voting		100.00%
Yunnan Diandong Yuwang Energy Limited Company ("Diandong Yuwang") [member]
Disclosure of subsidiaries [line items]
Country of incorporation		PRC
Type of interest held		held directly
Registered capital		¥ 1,700,740,000
Business nature and scope of operation		Electricity projects investment power generation and sales, coal exploitation and investment
Percentage of equity interest held, Interest		100.00%
Percentage of equity interest held, Voting		100.00%
Huaneng Suzihe Hydropower Development Limited Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation		PRC
Type of interest held		held directly
Registered capital		¥ 50,000,000
Business nature and scope of operation		Hydropower, aquaculture, agriculture irrigation
Percentage of equity interest held, Interest		100.00%
Percentage of equity interest held, Voting		100.00%
Enshi City Mawei Valley Hydropower Development Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation		PRC
Type of interest held		held directly
Registered capital		¥ 101,080,000
Business nature and scope of operation		Hydro-resource development hydropower, aquaculture
Percentage of equity interest held, Interest		100.00%
Percentage of equity interest held, Voting		100.00%
Huaneng Luoyang Co-generation Limited Liability Company [member]
Disclosure of subsidiaries [line items]
Country of incorporation		PRC
Type of interest held		held directly
Registered capital		¥ 600,000,000
Business nature and scope of operation		Production and sales of electricity and heating
Percentage of equity interest held, Interest		80.00%
Percentage of equity interest held, Voting		80.00%
Huaneng Jinling Combined Cycle Co-generation Co., Ltd. ("Jinling CCGT") [member]
Disclosure of subsidiaries [line items]
Country of incorporation	[1]	PRC
Type of interest held	[1]	held directly
Registered capital	[1]	¥ 356,350,000
Business nature and scope of operation	[1]	Construction and management of power plants and related projects
Percentage of equity interest held, Interest	[1]	51.00%
Percentage of equity interest held, Voting	[1]	72.00%
Huaneng Zhumadian Wind Power Generation Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation		PRC
Type of interest held		held directly
Registered capital		¥ 30,000,000
Business nature and scope of operation		Wind power generation, new energy development and utilization
Percentage of equity interest held, Interest		90.00%
Percentage of equity interest held, Voting		90.00%
SinoSing Power [member]
Disclosure of subsidiaries [line items]
Country of incorporation		Singapore
Type of interest held		held directly
Registered capital | $			$ 1,476,420,585
Business nature and scope of operation		Investment holding
Percentage of equity interest held, Interest		100.00%
Percentage of equity interest held, Voting		100.00%
Tuas Power [member]
Disclosure of subsidiaries [line items]
Country of incorporation		Singapore
Type of interest held		held indirectly
Registered capital | $				$ 1,433,550,000
Business nature and scope of operation		Investment holding
Percentage of equity interest held, Interest		100.00%
Percentage of equity interest held, Voting		100.00%
Tuas Power Supply Pte. Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation		Singapore
Type of interest held		held indirectly
Registered capital | $				500.000
Business nature and scope of operation		Power sales
Percentage of equity interest held, Interest		100.00%
Percentage of equity interest held, Voting		100.00%
TP Asset Management Pte. Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation		Singapore
Type of interest held		held indirectly
Registered capital | $				2
Business nature and scope of operation		Render of environment engineering services
Percentage of equity interest held, Interest		100.00%
Percentage of equity interest held, Voting		100.00%
TPGS Green Energy Pte. Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation		Singapore
Type of interest held		held indirectly
Registered capital | $				1,000,000
Business nature and scope of operation		Provision of utility services
Percentage of equity interest held, Interest		75.00%
Percentage of equity interest held, Voting		75.00%
NewEarth Pte. Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation		Singapore
Type of interest held		held indirectly
Registered capital | $				10,111,841
Business nature and scope of operation		Consultancy in waste recycling
Percentage of equity interest held, Interest		100.00%
Percentage of equity interest held, Voting		100.00%
NewEarth Singapore Pte. Ltd. [member]
Disclosure of subsidiaries [line items]
Country of incorporation		Singapore
Type of interest held		held indirectly
Registered capital | $				$ 17,816,050
Business nature and scope of operation		Industrial waste management and recycling
Percentage of equity interest held, Interest		100.00%
Percentage of equity interest held, Voting		100.00%
Xuzhou Tongshan District Xiehe Wind Power Generation Limited Liability Company ("Tongshan Xiehe Wind Power Generation") [member]
Disclosure of subsidiaries [line items]
Country of incorporation		PRC
Type of interest held		held indirectly
Registered capital		¥ 3,000,000
Business nature and scope of operation		Wind power generation
Percentage of equity interest held, Interest		100.00%
Percentage of equity interest held, Voting		100.00%
Luoyang Yangguang Co-generation Limited Liability Company ("Yangguang Co-generation") [member]
Disclosure of subsidiaries [line items]
Country of incorporation		PRC
Type of interest held		held indirectly
Registered capital		¥ 250,000,000
Business nature and scope of operation		Production and supply of electricity and heat power
Percentage of equity interest held, Interest		100.00%
Percentage of equity interest held, Voting		100.00%
Shanxi Xiaoyi Economic Development Zone Huaneng Energy Service Co., Ltd. ("Shanxi Xiaoyi Energy") (Note 40) [member]
Disclosure of subsidiaries [line items]
Country of incorporation	[2]	PRC
Type of interest held	[2]	held indirectly
Registered capital	[2]	¥ 100,000,000
Business nature and scope of operation	[2]	Electricity sales, sales of raw coal and processed coal
Percentage of equity interest held, Interest	[2]	51.00%
Percentage of equity interest held, Voting	[2]	100.00%
Ruzhou Xuji Wind Power Generation Limited Co., Ltd. (Note 40) [member]
Disclosure of subsidiaries [line items]
Country of incorporation		PRC
Type of interest held		held indirectly
Registered capital		¥ 4,000,000
Business nature and scope of operation		Wind power and photovoltaic power generation
Percentage of equity interest held, Interest		95.00%
Percentage of equity interest held, Voting		100.00%

[1] According to the voting in concert agreement entered into between the Company and one shareholder with 21% equity interests in Jinling CCGT, the shareholder agreed to vote the same in respect of significant financial and operating decisions made by the Company under the circumstances that its legitimate entitlements are guaranteed. As a result, the Company has control over Jinling CCGT.

[2] In 2016, the Company accounted for the investment in Shanxi Xiaoyi Energy as a joint venture. On 15 February 2017, the Company entered into an agreement with other shareholder with 49% equity interests in Shanxi Xiaoyi Energy who agreed to vote the same in respect of significant financial and operating decisions made by the Company. As a result, the Company has control over Shanxi Xiaoyi Energy since February 2017.

XML

Investments in subsidiaries (Detail information of equity interests held) (Detail)		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016
Huaqing Energy [member]
Disclosure of subsidiaries [line items]
Percentage of interest held by the Company	[1]	54.00%
Huaqing Energy [member] | Liangjiang Power [member]
Disclosure of subsidiaries [line items]
Percentage of interest held by the Company		60.00%
Beijing Cogeneration [member]
Disclosure of subsidiaries [line items]
Percentage of interest held by the Company	[2]	41.00%
Percentage of voting rights acquired through supplemental agreements		25.00%
Proportion of ownership interests held by non-controlling interests		59.00%	59.00%
Chaohu Power [member]
Disclosure of subsidiaries [line items]
Percentage of interest held by the Company	[3]	60.00%
Proportion of ownership interests held by non-controlling interests		10.00%
Zhanhua Photovoltaic Company [member]
Disclosure of subsidiaries [line items]
Percentage of interest held by the Company	[4],[5]	46.40%
Zhanhua Photovoltaic Company [member] | Zhanhua New Energy [member]
Disclosure of subsidiaries [line items]
Percentage of interest held by the Company		58.00%
Ruyi Coal Power [member]
Disclosure of subsidiaries [line items]
Percentage of interest held by the Company	[4]	40.00%
Ruyi Coal Power [member] | Shandong Power [member]
Disclosure of subsidiaries [line items]
Percentage of interest held by the Company		50.00%
Shandong Fuel Company [member]
Disclosure of subsidiaries [line items]
Percentage of interest held by the Company	[4]	76.55%
Shandong Fuel Company [member] | Shandong Power [member]
Disclosure of subsidiaries [line items]
Percentage of interest directly held by the Company		58.00%
Percentage of interest indirectly held by the Company		37.68%
Shandong Maintenance Company [member]
Disclosure of subsidiaries [line items]
Percentage of interest held by the Company	[4]	76.55%
Shandong Maintenance Company [member] | Shandong Power [member]
Disclosure of subsidiaries [line items]
Percentage of interest directly held by the Company		58.00%
Percentage of interest indirectly held by the Company		37.68%
Rizhao Power [member]
Disclosure of subsidiaries [line items]
Percentage of interest held by the Company	[4]	88.80%
Percentage of interest directly held by the Company		44.00%
Rizhao Power [member] | Shandong Power [member]
Disclosure of subsidiaries [line items]
Percentage of interest directly held by the Company		56.00%
Jinling CCGT [member]
Disclosure of subsidiaries [line items]
Percentage of interest held by the Company	[6]	51.00%
Proportion of ownership interests held by non-controlling interests		21.00%
Shanxi Xiaoyi Energy [member]
Disclosure of subsidiaries [line items]
Percentage of interest held by the Company	[7]	51.00%
Proportion of ownership interests held by non-controlling interests		49.00%

[1] The Company holds 90% interest in Liangjiang Power, and Liangjiang Power holds 60% interest in Huaqing Energy. Therefore, the company indirectly holds 54% equity interest in Huaqing Energy.

[2] Pursuant to an agreement entered into between the Company and another shareholder, the Company is entrusted to vote the 25% voting rights held by the other shareholder as long as the Company remains as the largest shareholder of Beijing Co-generation. Thus, the Company has majority voting rights required by the article of association to control the operation and financial policies of Beijing Co-generation. Accordingly, the Company has control over Beijing Co-generation.

[3] According to the voting in concert agreement entered into between the Company and one shareholder with 10% equity interests in Chaohu Power, the shareholder agreed to vote the same in respect of significant financial and operating decisions made by the Company. As a result, the Company has control over Chaohu Power.

[4] These companies are subsidiaries of Shandong Power. The Company holds 80% interest in Shandong Power. Thus, the Company indirectly holds 80% interest in these companies through their parent company. Zhanhua Photovoltaic Company is a newly established subsidiary of Shandong Power in 2017. Zhanhua New Energy, a wholly-owned subsidiary of Shandong Power, holds 58% equity interests in Zhanhua Photovoltaic Company. Thus, the Company indirectly holds 46.4% equity interests in Zhanhua Photovoltaic Company. Weishan New Energy and Helan New Energy are wholly-owned subsidiaries of Ruyi Coal Power, a 50% owned subsidiary of Shandong Power. As a result, the Company indirectly holds 40% interest in Weishan New Energy and Helan New Energy. Shandong Power directly holds 58% interest in Shandong Fuel Company and Shandong Maintenance Company; meanwhile, Shandong Power indirectly holds a total of 37.68% equity interests in Shandong Fuel Company and Shandong Maintenance Company respectively through its own subsidiaries: Baiyanghe Power, Huangtai Power, Yantai Power, Linyi Power, Liaocheng Co-generation and Yunhe Power. Thus, the Company indirectly holds 76.55% interest in Shandong Maintenance Company and Shandong Fuel Company respectively. The Company directly holds 44% equity interests in Rizhao Power and Shandong Power directly holds 56% interest in Rizhao Power; Thus, the Company holds 88.8% interest in Rizhao Power; Jiaxiang Power, Qufu Co-generation, Jining Co-generation are wholly-owned subsidiaries of Ruyi Coal Power. Thus, the Company indirectly holds 40% interest in Ruyi Coal Power, Jiaxiang Power, Qufu Co-generation and Jining Co-generation; In according to the voting in concert agreement entered into among the Shandong Power and other equity holders of Laiwu Power, Ruyi Coal Power, Rongcheng New Energy, Liaocheng Co-generation, the other equity holders agreed to vote the same in respect of significant financial and operating decisions made by the Shandong Power. As a result, the Company has control over these companies.

[5] These companies were newly established in 2017.

[6] According to the voting in concert agreement entered into between the Company and one shareholder with 21% equity interests in Jinling CCGT, the shareholder agreed to vote the same in respect of significant financial and operating decisions made by the Company under the circumstances that its legitimate entitlements are guaranteed. As a result, the Company has control over Jinling CCGT.

[7] In 2016, the Company accounted for the investment in Shanxi Xiaoyi Energy as a joint venture. On 15 February 2017, the Company entered into an agreement with other shareholder with 49% equity interests in Shanxi Xiaoyi Energy who agreed to vote the same in respect of significant financial and operating decisions made by the Company. As a result, the Company has control over Shanxi Xiaoyi Energy since February 2017.

XML

Investments in subsidiaries (Detail information of subsidiaries disposal or acquirement) (Detail) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017 CNY (¥)
Disclosure of subsidiaries [line items]
Reclassification from non-controlling interest to reserve due to equity transaction	¥ 0
Difference between consideration paid and derecognised non-controlling interest recorded in reserve	866,859
Capital surplus [member]
Disclosure of subsidiaries [line items]
Reclassification from non-controlling interest to reserve due to equity transaction	28,054
Difference between consideration paid and derecognised non-controlling interest recorded in reserve	0
Suzhou Combined Cycle Co-generation [member]
Disclosure of subsidiaries [line items]
Reclassification from non-controlling interest to reserve due to equity transaction	¥ 28,000
Huaneng (Luoyuan) Port Limited Company [member]
Disclosure of subsidiaries [line items]
Percentage of equity interest acquired	49.00%
Huaneng (Luoyuan) Port Limited Company [member] | Capital surplus [member]
Disclosure of subsidiaries [line items]
Difference between consideration paid and derecognised non-controlling interest recorded in reserve	¥ 4,000

XML

Available-for-sale financial assets (Detail) - CNY (¥) shares in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Available-for-sale financial assets [line items]
Available-for-sale financial assets	¥ 1,604,993,000	¥ 3,406,032,000
Impairment provisions	0	0
Other comprehensive income reclassified to profit or loss	¥ 1,135,356,000	741,648,000	¥ 0
China Yangtze Power Co., Ltd. [member]
Available-for-sale financial assets [line items]
Shares of disposal	143,780
Cash consideration	¥ 2,191,000,000
Investment income	1,480,000,000
Other comprehensive income reclassified to profit or loss	1,135,000,000
Fair value measurement [member] | Listed security [member]
Available-for-sale financial assets [line items]
Available-for-sale financial assets	9,223,000	1,820,713,000
Fair value measurement [member] | China Yangtze Power Co., Ltd. [member]
Available-for-sale financial assets [line items]
Available-for-sale financial assets	0	1,820,255,000
Fair value measurement [member] | Others [member]
Available-for-sale financial assets [line items]
Available-for-sale financial assets	9,223,000	458,000
Cost measurement [member] | Unlisted securities [member]
Available-for-sale financial assets [line items]
Available-for-sale financial assets	1,595,770,000	1,585,319,000
Cost measurement [member] | 10% of Shanxi Xishan Jinxing Energy Co., Ltd. [member]
Available-for-sale financial assets [line items]
Available-for-sale financial assets	531,274,000	531,274,000
Cost measurement [member] | 9.09% of Ganlong Double-track Railway Co., Ltd. [member]
Available-for-sale financial assets [line items]
Available-for-sale financial assets	1,000,000,000	1,000,000,000
Cost measurement [member] | Others [member]
Available-for-sale financial assets [line items]
Available-for-sale financial assets	¥ 64,496,000	¥ 54,045,000

XML

Land use rights (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of detailed information about land use rights [line items]
Beginning of the year	¥ 8,456,347	¥ 8,313,766
Movement:
Business combination (Note 40)	3,182,914	61,027
Addition	331,683	364,280
Amortization charge for the year	(368,898)	(242,400)
Impairment charge for the year (Note 7)	(108,590)	(51,981)
Disposals	(86,631)	(1,969)
Disposal of subsidiaries	(146,922)	0
Currency translation differences	4,882	13,624
End of the year	11,264,785	8,456,347
Land use rights without ownership certificate [abstract]
Aggregate net book value	1,246,000	792,000
Cost [member]
Disclosure of detailed information about land use rights [line items]
Beginning of the year	10,525,537	10,059,872
Movement:
End of the year	13,775,976	10,525,537
Accumulated amortization [member]
Disclosure of detailed information about land use rights [line items]
Beginning of the year	(1,792,367)	(1,530,972)
Movement:
End of the year	(2,128,752)	(1,792,367)
Accumulated impairment losses [member]
Disclosure of detailed information about land use rights [line items]
Beginning of the year	(276,823)	(215,134)
Movement:
End of the year	¥ (382,439)	¥ (276,823)

XML

Power generation licenses (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Power generation licenses [abstract]
Beginning of the year	¥ 3,849,199	¥ 3,679,175
Movement:
Currency translation differences	67,047	170,024
End of the year	¥ 3,916,246	¥ 3,849,199
Period of power generation license	30 years

XML

Power generation license (Narrative) (Detail) - CNY (¥)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Impairment test of power generation license [line items]
Growth rates on average	3.00%
Growth rates of cash flows beyond the terminal year	2.00%
Tuas Power [member]
Impairment test of power generation license [line items]
Discount rates	7.30%	7.54%
Power generation license [member]
Impairment test of power generation license [line items]
Impairment provided for the power generation license	¥ 0
Absolute increase in discount rate of 0.5% [member] | Tuas Power [member]
Impairment test of power generation license [line items]
Recoverable amount of the CGU	¥ (2,043,000,000)	¥ (1,899,000,000)

XML

Mining rights (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of detailed information about mining rights [line items]
Beginning of the year	¥ 1,646,271	¥ 1,646,271
Movement:
Addition	0	0
Impairment charge for the year	0	0
End of the year	1,646,271	1,646,271
Cost [member]
Disclosure of detailed information about mining rights [line items]
Beginning of the year	2,406,567	2,406,567
Movement:
End of the year	2,406,567	2,406,567
Accumulated impairment losses [member]
Disclosure of detailed information about mining rights [line items]
Beginning of the year	(760,296)	(760,296)
Movement:
End of the year	¥ (760,296)	¥ (760,296)

XML

Derivative financial instruments (Details of derivative financial assets) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Details of derivative financial instruments [line items]
Derivative financial assets	¥ 333,692	¥ 378,323
Less: non-current portion	75,328	99,721
Current portion	258,364	278,602
Hedging instruments for cash flow hedge (fuel swap contracts) [member]
Details of derivative financial instruments [line items]
Derivative financial assets	330,966	264,535
Less: non-current portion	75,328	71,341
Hedging instruments for cash flow hedge (exchange forward contracts) [member]
Details of derivative financial instruments [line items]
Derivative financial assets	0	107,907
Less: non-current portion	0	28,380
Financial instruments at fair value through profit or loss (fuel swap contracts) [member]
Details of derivative financial instruments [line items]
Derivative financial assets	¥ 2,726	¥ 5,881

XML

Derivative financial instruments (Details of derivative financial liabilities) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Details of derivative financial instruments [line items]
Derivative financial liabilities	¥ 210,664	¥ 334,738
Less: non-current portion	148,486	201,169
Current portion	62,178	133,569
Hedging instruments for cash flow hedge (fuel swap contracts) [member]
Details of derivative financial instruments [line items]
Derivative financial liabilities	11,794	164,464
Less: non-current portion	2,026	31,673
Hedging instruments for cash flow hedge (exchange forward contracts) [member]
Details of derivative financial instruments [line items]
Derivative financial liabilities	68,102	454
Less: non-current portion	21,745	295
Hedging instruments for cash flow hedge (interest rate swap contracts) [member]
Details of derivative financial instruments [line items]
Derivative financial liabilities	130,643	169,201
Less: non-current portion	124,715	169,201
Financial instruments at fair value through profit or loss (fuel swap contracts) [member]
Details of derivative financial instruments [line items]
Derivative financial liabilities	¥ 125	¥ 619

XML

Derivative financial instruments (Narrative) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2017 CNY (¥)	Dec. 31, 2016 CNY (¥)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Details of derivative financial instruments [line items]
Material ineffective portion recognized in the profit or loss arising from cash flow hedges	¥ 0	¥ 0
Derivative financial liabilities	210,664,000	334,738,000
The Company [member] | Interest rate swap contract [member]
Details of derivative financial instruments [line items]
Notional amount	¥ 1,150,000,000	1,443,000,000	$ 176	$ 208
Annual fixed interest	4.40%
Original annual floating interest	6-month LIBOR+1%
TPG [member] | Interest rate swap contract [member]
Details of derivative financial instruments [line items]
Notional amount	¥ 5,220,000,000	6,522,000,000	$ 1,069	$ 1,359
Original annual floating interest	6-month SOR
Derivative financial liabilities	¥ 108,000,000	¥ 99,000,000

XML

Derivative financial instruments (Analysis of contractual cash inflows (outflows) of major derivative financial instruments) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Details of derivative financial instruments [line items]
Derivative financial assets, Carrying amounts	¥ 333,692	¥ 378,323
Derivative financial liabilities, Carrying amounts	210,664	334,738
Fuel derivatives used for hedging [member]
Details of derivative financial instruments [line items]
Derivative financial assets, Carrying amounts	330,966	264,535
Derivative financial liabilities, Carrying amounts	11,794	164,464
Derivative financial assets (net settlement), Contractual cash flows	330,966	264,535
Derivative financial liabilities (net settlement), Contractual cash flows	(11,794)	(164,464)
Forward exchange contracts used for hedging [member]
Details of derivative financial instruments [line items]
Derivative financial assets, Carrying amounts	0	107,907
Derivative financial liabilities, Carrying amounts	68,102	454
Derivative financial assets - inflows, Contractual cash flows		2,118,946
Derivative financial assets - outflows, Contractual cash flows		(2,009,205)
Derivative financial assets (net settlement), Contractual cash flows		109,741
Derivative financial liabilities - inflows, Contractual cash flows	2,509,363	527,939
Derivative financial liabilities - outflows, Contractual cash flows	(2,568,034)	(528,454)
Derivative financial liabilities (net settlement), Contractual cash flows	(58,671)	(515)
Fuel derivatives that do not qualify as hedges [member]
Details of derivative financial instruments [line items]
Derivative financial assets, Carrying amounts	2,726	5,881
Derivative financial liabilities, Carrying amounts	125	619
Derivative financial assets (net settlement), Contractual cash flows	2,726	5,881
Derivative financial liabilities (net settlement), Contractual cash flows	(125)	(619)
Net-settled interest rate swaps used for hedging [member]
Details of derivative financial instruments [line items]
Derivative financial liabilities, Carrying amounts	130,643	169,201
Derivative financial liabilities (net settlement), Contractual cash flows	(154,367)	(228,905)
Within 1 year [member] | Fuel derivatives used for hedging [member]
Details of derivative financial instruments [line items]
Derivative financial assets (net settlement), Contractual cash flows	255,638	193,194
Derivative financial liabilities (net settlement), Contractual cash flows	(9,768)	(132,792)
Within 1 year [member] | Forward exchange contracts used for hedging [member]
Details of derivative financial instruments [line items]
Derivative financial assets - inflows, Contractual cash flows		1,488,071
Derivative financial assets - outflows, Contractual cash flows		(1,407,606)
Derivative financial assets (net settlement), Contractual cash flows		80,465
Derivative financial liabilities - inflows, Contractual cash flows	2,041,812	475,881
Derivative financial liabilities - outflows, Contractual cash flows	(2,083,441)	(476,104)
Derivative financial liabilities (net settlement), Contractual cash flows	(41,629)	(223)
Within 1 year [member] | Fuel derivatives that do not qualify as hedges [member]
Details of derivative financial instruments [line items]
Derivative financial assets (net settlement), Contractual cash flows	2,726	5,881
Derivative financial liabilities (net settlement), Contractual cash flows	(125)	(619)
Within 1 year [member] | Net-settled interest rate swaps used for hedging [member]
Details of derivative financial instruments [line items]
Derivative financial liabilities (net settlement), Contractual cash flows	(82,533)	(113,563)
Cash flows, Between 1 and 5 years [member] | Fuel derivatives used for hedging [member]
Details of derivative financial instruments [line items]
Derivative financial assets (net settlement), Contractual cash flows	75,328	71,341
Derivative financial liabilities (net settlement), Contractual cash flows	(2,026)	(31,672)
Cash flows, Between 1 and 5 years [member] | Forward exchange contracts used for hedging [member]
Details of derivative financial instruments [line items]
Derivative financial assets - inflows, Contractual cash flows		630,875
Derivative financial assets - outflows, Contractual cash flows		(601,599)
Derivative financial assets (net settlement), Contractual cash flows		29,276
Derivative financial liabilities - inflows, Contractual cash flows	467,551	52,058
Derivative financial liabilities - outflows, Contractual cash flows	(484,593)	(52,350)
Derivative financial liabilities (net settlement), Contractual cash flows	(17,042)	(292)
Cash flows, Between 1 and 5 years [member] | Fuel derivatives that do not qualify as hedges [member]
Details of derivative financial instruments [line items]
Derivative financial assets (net settlement), Contractual cash flows	0	0
Derivative financial liabilities (net settlement), Contractual cash flows	0	0
Cash flows, Between 1 and 5 years [member] | Net-settled interest rate swaps used for hedging [member]
Details of derivative financial instruments [line items]
Derivative financial liabilities (net settlement), Contractual cash flows	(71,834)	(115,342)
Cash flows, After 5 years [member] | Fuel derivatives used for hedging [member]
Details of derivative financial instruments [line items]
Derivative financial assets (net settlement), Contractual cash flows	0	0
Derivative financial liabilities (net settlement), Contractual cash flows	0	0
Cash flows, After 5 years [member] | Forward exchange contracts used for hedging [member]
Details of derivative financial instruments [line items]
Derivative financial assets - inflows, Contractual cash flows		0
Derivative financial assets - outflows, Contractual cash flows		0
Derivative financial assets (net settlement), Contractual cash flows		0
Derivative financial liabilities - inflows, Contractual cash flows	0	0
Derivative financial liabilities - outflows, Contractual cash flows	0	0
Derivative financial liabilities (net settlement), Contractual cash flows	0	0
Cash flows, After 5 years [member] | Fuel derivatives that do not qualify as hedges [member]
Details of derivative financial instruments [line items]
Derivative financial assets (net settlement), Contractual cash flows	0	0
Derivative financial liabilities (net settlement), Contractual cash flows	0	0
Cash flows, After 5 years [member] | Net-settled interest rate swaps used for hedging [member]
Details of derivative financial instruments [line items]
Derivative financial liabilities (net settlement), Contractual cash flows	¥ 0	¥ 0

XML

Goodwill (Movements of goodwill) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of reconciliation of changes in goodwill [line items]
Beginning of the year	¥ 12,135,729	¥ 11,677,182
Movement:
Business combination (Note 40)	3,167,566	0
End of the year	15,484,120	12,135,729
Cost [member]
Disclosure of reconciliation of changes in goodwill [line items]
Beginning of the year	15,391,642	14,919,930
Movement:
Disposal of subsidiary	(309,269)	0
Currency translation differences	186,015	471,712
End of the year	18,435,954	15,391,642
Accumulated impairment losses [member]
Disclosure of reconciliation of changes in goodwill [line items]
Beginning of the year	(3,255,913)	(3,242,748)
Movement:
Disposal of subsidiary	309,269	0
Currency translation differences	(5,190)	(13,165)
End of the year	¥ (2,951,834)	¥ (3,255,913)

XML

Goodwill (Impairment test for goodwill) (Carrying amounts of major goodwill allocated to individual CGUs) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Impairment test for goodwill [line items]
Major Goodwill allocated to individual CGUs	¥ 15,484,120	¥ 12,135,729	¥ 11,677,182
Shandong Power [member]
Impairment test for goodwill [line items]
Major Goodwill allocated to individual CGUs	2,739,818	0
Wuhan Power [member]
Impairment test for goodwill [line items]
Major Goodwill allocated to individual CGUs	518,484	518,484
Hainan Power [member]
Impairment test for goodwill [line items]
Major Goodwill allocated to individual CGUs	506,336	506,336
Heilongjiang Power [member]
Impairment test for goodwill [line items]
Major Goodwill allocated to individual CGUs	265,319	0
Yangliuqing Cogeneration [member]
Impairment test for goodwill [line items]
Major Goodwill allocated to individual CGUs	151,459	151,459
Qinbei Power [member]
Impairment test for goodwill [line items]
Major Goodwill allocated to individual CGUs	109,913	109,913
Jilin Power [member]
Impairment test for goodwill [line items]
Major Goodwill allocated to individual CGUs	109,826	0
Yueyang Power Company [member]
Impairment test for goodwill [line items]
Major Goodwill allocated to individual CGUs	100,907	100,907
Beijing Cogeneration [member]
Impairment test for goodwill [line items]
Major Goodwill allocated to individual CGUs	95,088	95,088
Tuas Power [member]
Impairment test for goodwill [line items]
Major Goodwill allocated to individual CGUs	¥ 10,561,956	¥ 10,381,131

XML

Goodwill (Impairment test for goodwill) (Rates used for value-in-use calculations) (Detail)	Dec. 31, 2017
Impairment test for goodwill [line items]
Growth rates on average	3.00%
Growth rates of cash flows beyond the terminal year	2.00%
PRC power segment [member] | Bottom of range [member]
Impairment test for goodwill [line items]
Discount rates	8.51%
PRC power segment [member] | Top of range [member]
Impairment test for goodwill [line items]
Discount rates	13.59%
Singapore segment [member]
Impairment test for goodwill [line items]
Discount rates	7.30%

XML

Other non-current assets (Details of other non-current assets) (Detail) - CNY (¥)		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016
Other non-current assets [abstract]
VAT recoverable		¥ 2,741,604,000	¥ 1,651,891,000
Prepayments for pre-construction cost		937,161,000	0
Intangible assets	[1]	697,884,000	411,308,000
Finance lease receivables		617,187,000	563,099,000
Prepaid territorial water use right	[2]	374,743,000	777,994,000
Prepayments for capacity quota		303,399,000	0
Profit compensation from Huaneng Group (Note 40)		244,533,000	0
Prepaid connection fees		120,486,000	108,365,000
Others		1,659,848,000	809,288,000
Total		7,696,845,000	4,321,945,000
Impairment provided for the intangible assets		¥ 0	¥ 0
Contractual period of amortization, prepaid territorial water use right		50 years

[1] The intangible assets primarily consist of software, patented technologies and etc. In 2017, there is no impairment provided for the intangible assets (2016: RMB nil).

[2] The prepaid territorial water use right are amortized over the contractual period of 50 years.

XML

Inventories (Details of inventories) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Inventories [abstract]
Fuel (coal and oil) for power generation	¥ 5,684,824	¥ 5,391,068
Material and supplies	1,869,462	1,655,357
Gross amounts of inventories	7,554,286	7,046,425
Less: provision for inventory obsolescence	168,875	167,282	¥ 162,389	¥ 163,458
Total	¥ 7,385,411	¥ 6,879,143

XML

Inventories (Movements of provision for inventory obsolescence during years) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Inventories [abstract]
Beginning of the year	¥ (167,282)	¥ (162,389)	¥ (163,458)
Provision	(1,520)	(1,134)	(2,867)
Reversal	1,782	1,390	1,039
Disposal of subsidiaries	162	0	0
Currency translation differences	(2,017)	(5,149)	2,897
End of the year	¥ (168,875)	¥ (167,282)	¥ (162,389)

XML

Other receivables and assets (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Other receivables and assets [abstract]
Prepayments for inventories	¥ 387,335	¥ 252,389
Prepaid income tax	150,838	141,423
Prepayments for pre-construction cost	0	885,051
Prepayments for capacity quota	0	303,399
Others	181,913	121,810
Total prepayments	720,086	1,704,072
Less: provision for doubtful accounts	4,638	0
Total prepayments, net	715,448	1,704,072
Dividends receivable	273,897	861,408
Receivables from sales of fuel	290,040	0
Others	1,528,855	908,296
Subtotal other receivables	2,092,792	1,769,704
Less: provision for doubtful accounts	29,241	28,961
Total other receivables, net	2,063,551	1,740,743
Profit compensation from Huaneng Group (Note 40)	615,013	0
VAT recoverable	2,607,505	2,008,955
Designated loan to a joint venture	80,000	80,000
Gross total	6,115,396	5,562,731
Net total	¥ 6,081,517	¥ 5,533,770

XML

Other receivables and assets (Gross amount of other receivables denominated) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Gross amounts of other receivables denominated [line items]
Gross amounts of other receivables	¥ 2,092,792	¥ 1,769,704
RMB [member]
Gross amounts of other receivables denominated [line items]
Gross amounts of other receivables	1,966,971	1,635,051
S$ [member]
Gross amounts of other receivables denominated [line items]
Gross amounts of other receivables	76,529	95,816
US$ [member]
Gross amounts of other receivables denominated [line items]
Gross amounts of other receivables	¥ 49,292	¥ 38,837

XML

Other receivables and assets (Movements of other receivables provision for doubtful accounts) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other receivables and assets [abstract]
Beginning of the year	¥ (28,961)	¥ (27,957)	¥ (29,644)
Provision	(5,890)	(1,011)	(9)
Reversal/write-off	972	7	1,696
End of the year	¥ (33,879)	¥ (28,961)	¥ (27,957)

XML

Other receivables and assets (Ageing analysis of other receivables) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Ageing analysis of other receivables [line items]
Other receivables	¥ 2,092,792	¥ 1,769,704
Financial assets past due but not impaired [member]
Ageing analysis of other receivables [line items]
Other receivables	140,055	113,109
Financial assets past due but not impaired [member] | Within 1 year [member]
Ageing analysis of other receivables [line items]
Other receivables	61,189	42,103
Financial assets past due but not impaired [member] | Between 1 to 2 years [member]
Ageing analysis of other receivables [line items]
Other receivables	1,360	2,683
Financial assets past due but not impaired [member] | Between 2 to 3 years [member]
Ageing analysis of other receivables [line items]
Other receivables	1,130	847
Financial assets past due but not impaired [member] | Over 3 years [member]
Ageing analysis of other receivables [line items]
Other receivables	76,376	67,476
Financial assets impaired [member]
Ageing analysis of other receivables [line items]
Other receivables	41,410	36,212
Financial assets impaired [member] | Within 1 year [member]
Ageing analysis of other receivables [line items]
Other receivables	7,535	752
Financial assets impaired [member] | Between 1 to 2 years [member]
Ageing analysis of other receivables [line items]
Other receivables	10	912
Financial assets impaired [member] | Between 2 to 3 years [member]
Ageing analysis of other receivables [line items]
Other receivables	463	285
Financial assets impaired [member] | Over 3 years [member]
Ageing analysis of other receivables [line items]
Other receivables	¥ 33,402	¥ 34,263

XML

Accounts receivable (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounts receivable [abstract]
Accounts receivable	¥ 21,948,753	¥ 14,050,096
Notes receivable	3,610,928	2,432,264
Gross amounts of account receivables	25,559,681	16,482,360
Less: provision for doubtful accounts	112,086	88,889	¥ 2,054	¥ 11,809
Total	¥ 25,447,595	¥ 16,393,471

XML

Accounts receivable (Denominations of gross amounts of account receivable) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Gross amounts of account receivables denominated [line items]
Gross amounts of account receivables	¥ 25,559,681	¥ 16,482,360
RMB [member]
Gross amounts of account receivables denominated [line items]
Gross amounts of account receivables	24,633,465	15,586,989
S$ [member]
Gross amounts of account receivables denominated [line items]
Gross amounts of account receivables	922,993	876,956
US$ [member]
Gross amounts of account receivables denominated [line items]
Gross amounts of account receivables	¥ 3,223	¥ 18,415

XML

Accounts receivable (Movements of provision for doubtful accounts) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accounts receivable [abstract]
Beginning of the year	¥ (88,889)	¥ (2,054)	¥ (11,809)
Provision	(23,363)	(88,818)	(60)
Reversal	0	397	1,833
Write-off	167	1,682	0
Transfer from a subsidiary to a joint venture	0	0	8,126
Currency translation differences	(1)	(96)	(144)
End of the year	¥ (112,086)	¥ (88,889)	¥ (2,054)

XML

Accounts receivable (Ageing analysis of accounts receivable) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Ageing analysis of accounts receivable and notes receivable [line items]
Accounts receivable	¥ 25,559,681	¥ 16,482,360
Within 1 year [member]
Ageing analysis of accounts receivable and notes receivable [line items]
Accounts receivable	24,787,284	16,152,038
Between 1 to 2 years [member]
Ageing analysis of accounts receivable and notes receivable [line items]
Accounts receivable	576,564	279,694
Between 2 to 3 years [member]
Ageing analysis of accounts receivable and notes receivable [line items]
Accounts receivable	155,360	29,123
Over 3 years [member]
Ageing analysis of accounts receivable and notes receivable [line items]
Accounts receivable	¥ 40,473	¥ 21,505

XML

Accounts receivable (Ageing analysis of accounts receivable and notes receivable neither individually nor collectively impaired) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Ageing analysis of accounts receivable and notes receivable [line items]
Accounts receivable	¥ 25,559,681	¥ 16,482,360
Financial assets not impaired [member]
Ageing analysis of accounts receivable and notes receivable [line items]
Accounts receivable	25,447,595	16,393,471
Financial assets neither past due nor impaired [member]
Ageing analysis of accounts receivable and notes receivable [line items]
Accounts receivable	24,936,171	16,063,215
Financial assets past due but not impaired [member] | Within 1 year [member]
Ageing analysis of accounts receivable and notes receivable [line items]
Accounts receivable	267,845	248,597
Financial assets past due but not impaired [member] | Between 1 to 2 years [member]
Ageing analysis of accounts receivable and notes receivable [line items]
Accounts receivable	206,188	63,094
Financial assets past due but not impaired [member] | Between 2 to 3 years [member]
Ageing analysis of accounts receivable and notes receivable [line items]
Accounts receivable	27,130	17,944
Financial assets past due but not impaired [member] | Over 3 years [member]
Ageing analysis of accounts receivable and notes receivable [line items]
Accounts receivable	¥ 10,261	¥ 621

XML

Accounts receivable (Narrative) (Detail) - CNY (¥)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of detailed information about accounts receivable [line items]
Accounts receivable secured to banks as collateral against loans	¥ 0	¥ 0
The maturity period of the notes receivable	from 1 to 12 months	from 1 to 12 months
The Company and its subsidiaries except for SinoSing Power [member]
Disclosure of detailed information about accounts receivable [line items]
Credit period	one month from the end of the month in which the sales are made
SinoSing Power [member]
Disclosure of detailed information about accounts receivable [line items]
Credit period	from 5 to 60 days from the dates of billings

XML

Share capital (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
As at 1 January and 31 December
Number of shares	15,200,383,440	15,200,383,440	15,200,383,440	14,420,383,000
Share capital	¥ 15,200,383	¥ 15,200,383	¥ 15,200,383
A shares [member]
As at 1 January and 31 December
Number of shares	10,500,000,000	10,500,000,000	10,500,000,000
Share capital	¥ 10,500,000	¥ 10,500,000	¥ 10,500,000
Overseas listed foreign shares [member]
As at 1 January and 31 December
Number of shares	4,700,383,440	4,700,383,440	4,700,383,440
Share capital	¥ 4,700,383	¥ 4,700,383	¥ 4,700,383

XML

Perpetual Corporate Bonds (Detail) - CNY (¥) ¥ / shares in Units, ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of information about perpetual corporate bonds [line items]
Aggregate net proceeds from issuing perpetual corporate bonds	¥ 4,999,950	¥ 0	¥ 0
Application distribution rate	sum of the applicable benchmark interest rate, the initial spread and 300 basis points per annum
Profit	¥ 1,584,207	¥ 10,347,987	¥ 17,259,107
Perpetual corporate bonds [member]
Disclosure of information about perpetual corporate bonds [line items]
Number	50,000,000	0
Par value	¥ 5,000,000
Profit	¥ 69,000
Bond A [member]
Disclosure of information about perpetual corporate bonds [line items]
Issuance Date	September 2017
Category	Equity Instrument
Initial annual distribution rate	5.05%
Issue Price	¥ 100
Number	25,000,000	0
Par value	¥ 2,500,000
Initial Period	3 Years
Conversion Condition	None
Conversion Result	None
Bond B [member]
Disclosure of information about perpetual corporate bonds [line items]
Issuance Date	September 2017
Category	Equity Instrument
Initial annual distribution rate	5.17%
Issue Price	¥ 100
Number	25,000,000	0
Par value	¥ 2,500,000
Initial Period	5 years
Conversion Condition	None
Conversion Result	None

XML

Perpetual Corporate Bonds (Changes of perpetual corporate bonds) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of information about perpetual corporate bonds [line items]
Amount, at the beginning of period	¥ 0
Amount, Issuance	4,999,950
Cumulative interests	68,600	¥ 0	¥ 0
Amount, at the end of period	¥ 5,068,550	¥ 0
Perpetual corporate bonds [member]
Disclosure of information about perpetual corporate bonds [line items]
Number, at the beginning of period	0
Amount, at the beginning of period	¥ 0
Number, Issuance	50,000,000
Amount, Issuance	¥ 4,999,950
Cumulative interests	¥ 68,600
Number, at the end of period	50,000,000	0
Amount, at the end of period	¥ 5,068,550	¥ 0
Perpetual corporate bond A [member]
Disclosure of information about perpetual corporate bonds [line items]
Number, at the beginning of period	0
Amount, at the beginning of period	¥ 0
Number, Issuance	25,000,000
Amount, Issuance	¥ 2,499,975
Cumulative interests	¥ 33,897
Number, at the end of period	25,000,000	0
Amount, at the end of period	¥ 2,533,872	¥ 0
Perpetual corporate bond B [member]
Disclosure of information about perpetual corporate bonds [line items]
Number, at the beginning of period	0
Amount, at the beginning of period	¥ 0
Number, Issuance	25,000,000
Amount, Issuance	¥ 2,499,975
Cumulative interests	¥ 34,703
Number, at the end of period	25,000,000	0
Amount, at the end of period	¥ 2,534,678	¥ 0

XML

Surplus reserves (Detail) - CNY (¥)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Surplus reserves [abstract]
Surplus reserves	¥ 8,140,030,000	¥ 8,140,030,000
Provision made for statutory surplus reserve	0
Provision made to discretionary surplus reserve	¥ 0	¥ 0

XML

Surplus reserves (Disclosure of retained earnings) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Disclosure of information of retained earnings [line items]
Retained earnings	¥ 35,793,257	¥ 38,690,132
PRC GAAP [member]
Disclosure of information of retained earnings [line items]
Retained earnings	¥ 31,965,000

XML

Dividends (Detail) - CNY (¥) ¥ / shares in Units, ¥ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Dividends [abstract]
Cash dividend per share	¥ 0.1	¥ 0.29	¥ 0.47
Total cash dividend	¥ 1,520	¥ 4,408	¥ 7,144

XML

Long-term loans (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Disclosure of long-term loans [line items]
Long-term loans	¥ 125,129,416	¥ 74,551,246
Less: Current portion	18,098,458	9,560,885
Non-current portion	107,030,958	64,990,361
Huaneng Group and its subsidiaries (a) [member]
Disclosure of long-term loans [line items]
Long-term loans	7,427,183	3,818,807
Less: Current portion	2,123,494	855,222
Non-current portion	5,303,689	2,963,585
Bank loans and other loans (b) [member]
Disclosure of long-term loans [line items]
Long-term loans	117,702,233	70,732,439
Less: Current portion	15,974,964	8,705,663
Non-current portion	¥ 101,727,269	¥ 62,026,776

XML

Long-term loans (Loans from Huaneng Group and its subsidiaries) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of long-term loans [line items]
Long-term loans	¥ 125,129,416	¥ 74,551,246
Less: Current portion	18,098,458	9,560,885
Non-current portion	107,030,958	64,990,361
Huaneng Group and its subsidiaries [member]
Disclosure of long-term loans [line items]
Long-term loans	7,427,183	3,818,807
Less: Current portion	2,123,494	855,222
Non-current portion	5,303,689	2,963,585
Huaneng Group [member] | Unsecured [member] | RMB [member] | Variable rate [member]
Disclosure of long-term loans [line items]
Long-term loans	665,225	665,015
Less: Current portion	0	640,485
Non-current portion	¥ 665,225	¥ 24,530
Annual interest rate	4.75%	4.75%
HIPDC [member] | Unsecured [member] | RMB [member] | Variable rate [member]
Disclosure of long-term loans [line items]
Long-term loans		¥ 210
Less: Current portion		0
Non-current portion		¥ 210
Annual interest rate		4.75%
Huaneng Finance [member] | Unsecured [member] | RMB [member] | Variable rate [member]
Disclosure of long-term loans [line items]
Long-term loans	¥ 2,794,780	¥ 286,000
Less: Current portion	244,500	60,000
Non-current portion	¥ 2,550,280	¥ 226,000
Annual interest rate	4.28%-4.66%	4.41%-4.75%
Huaneng Tiancheng Financial Leasing Co., Ltd. ("Tiancheng Financial Leasing") [member] | Secured [member] | RMB [member] | Variable rate [member]
Disclosure of long-term loans [line items]
Long-term loans	¥ 3,967,178	¥ 2,867,582
Less: Current portion	1,878,994	154,737
Non-current portion	¥ 2,088,184	¥ 2,712,845
Annual interest rate	4.06%-4.51%	4.42%

XML

Long-term loans (Bank loans and other loans) (Detail) € in Thousands, ¥ in Thousands, ¥ in Thousands, $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017 CNY (¥)	Dec. 31, 2016 CNY (¥)	Dec. 31, 2017 USD ($)	Dec. 31, 2017 SGD ($)	Dec. 31, 2017 EUR (€)	Dec. 31, 2017 JPY (¥)	Dec. 31, 2016 USD ($)	Dec. 31, 2016 SGD ($)	Dec. 31, 2016 EUR (€)	Dec. 31, 2016 JPY (¥)
Disclosure of long-term loans [line items]
Long-term loans	¥ 125,129,416	¥ 74,551,246
Less: Current portion	18,098,458	9,560,885
Non-current portion	107,030,958	64,990,361
Bank loans and other loans [member]
Disclosure of long-term loans [line items]
Long-term loans	117,702,233	70,732,439
Less: Current portion	15,974,964	8,705,663
Non-current portion	101,727,269	62,026,776
Bank loans and other loans [member] | Secured [member] | RMB [member] | Fixed rate [member]
Disclosure of long-term loans [line items]
Long-term loans	7,080,379	8,305,310
Less: Current portion	1,213,150	1,202,430
Non-current portion	¥ 5,867,229	¥ 7,102,880
Annual interest rate	4.41%-4.90%	4.41%-4.90%
Bank loans and other loans [member] | Secured [member] | RMB [member] | Variable rate [member]
Disclosure of long-term loans [line items]
Long-term loans	¥ 4,117,055	¥ 760,500
Less: Current portion	657,231	56,800
Non-current portion	¥ 3,459,824	¥ 703,700
Annual interest rate	4.66%-4.90%	4.66%-4.90%
Bank loans and other loans [member] | Unsecured [member] | RMB [member] | Fixed rate [member]
Disclosure of long-term loans [line items]
Long-term loans	¥ 14,981,859	¥ 15,896,017
Less: Current portion	3,179,426	2,515,343
Non-current portion	¥ 11,802,433	¥ 13,380,674
Annual interest rate	2.00%-5.00%	2.65%-5.00%
Bank loans and other loans [member] | Unsecured [member] | RMB [member] | Variable rate [member]
Disclosure of long-term loans [line items]
Long-term loans	¥ 76,467,082	¥ 30,095,494
Less: Current portion	10,013,829	4,270,910
Non-current portion	¥ 66,453,253	¥ 25,824,584
Annual interest rate	1.80%-6.03%	4.17%-5.65%
Bank loans and other loans [member] | Unsecured [member] | US$ [member] | Variable rate [member]
Disclosure of long-term loans [line items]
Long-term loans	¥ 2,271,785	¥ 2,842,505	$ 347,676				$ 409,760
Less: Current portion	418,163	388,925
Non-current portion	¥ 1,853,622	¥ 2,453,580
Annual interest rate	1.74%/2.26%	1.92%
Bank loans and other loans [member] | Unsecured [member] | S$ [member] | Variable rate [member]
Disclosure of long-term loans [line items]
Long-term loans	¥ 12,396,329	¥ 12,385,213		$ 2,538,619				$ 2,580,522
Less: Current portion	419,570	196,410
Non-current portion	¥ 11,976,759	¥ 12,188,803
Annual interest rate	2.73%/4.25%	2.76%/4.25%
Bank loans and other loans [member] | Unsecured [member] | EUR [member] | Fixed rate [member]
Disclosure of long-term loans [line items]
Long-term loans	¥ 237,680	¥ 286,329			€ 30,463				€ 39,187
Less: Current portion	67,207	68,271
Non-current portion	¥ 170,473	¥ 218,058
Annual interest rate	1.30%-2.15%	2.00%/2.15%
Bank loans and other loans [member] | Unsecured [member] | JPY [member] | Fixed rate [member]
Disclosure of long-term loans [line items]
Long-term loans	¥ 150,064	¥ 161,071				¥ 2,592,661				¥ 2,702,533
Less: Current portion	6,388	6,574
Non-current portion	¥ 143,676	¥ 154,497
Annual interest rate	0.75%	0.75%

XML

Long-term loans (Narrative) (Detail) - CNY (¥)	Dec. 31, 2017	Dec. 31, 2016
Disclosure of long-term loans [line items]
Long-term loans	¥ 125,129,416,000	¥ 74,551,246,000
Secured [member] | Property, plant and equipment [member]
Disclosure of long-term loans [line items]
Long-term loans	4,605,000,000	2,902,000,000
Net book value of property, plant and equipment	5,167,000,000	3,105,000,000
Secured [member] | Future electricity and heat revenue [member]
Disclosure of long-term loans [line items]
Long-term loans	10,559,000,000	9,032,000,000
Tiancheng Financial Leasing [member] | Secured [member] | Property, plant and equipment [member]
Disclosure of long-term loans [line items]
Long-term loans	3,697,000,000	2,868,000,000
Nominal price of buy back when lease term expires	1
Net book value of property, plant and equipment	4,064,000,000	2,999,000,000
Other financial leasing companies [member] | Secured [member] | Property, plant and equipment [member]
Disclosure of long-term loans [line items]
Long-term loans	638,000,000	0
Nominal price of buy back when lease term expires	1
Net book value of property, plant and equipment	¥ 1,103,000,000	¥ 0

XML

Long-term loans (Maturity of long-term loans) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Disclosure of long-term loans [line items]
Long-term loans	¥ 125,129,416	¥ 74,551,246
Less: amount due within 1 year included under current liabilities	18,098,458	9,560,885
Non-current portion	107,030,958	64,990,361
Huaneng Group and its subsidiaries [member]
Disclosure of long-term loans [line items]
Long-term loans	7,427,183	3,818,807
Less: amount due within 1 year included under current liabilities	2,123,494	855,222
Non-current portion	5,303,689	2,963,585
Bank loans and other loans [member]
Disclosure of long-term loans [line items]
Long-term loans	117,702,233	70,732,439
Less: amount due within 1 year included under current liabilities	15,974,964	8,705,663
Non-current portion	101,727,269	62,026,776
1 year or less [member] | Huaneng Group and its subsidiaries [member]
Disclosure of long-term loans [line items]
Long-term loans	2,123,494	855,222
1 year or less [member] | Bank loans and other loans [member]
Disclosure of long-term loans [line items]
Long-term loans	15,974,964	8,705,663
More than 1 year but no more than 2 years [member] | Huaneng Group and its subsidiaries [member]
Disclosure of long-term loans [line items]
Long-term loans	1,689,582	715,400
More than 1 year but no more than 2 years [member] | Bank loans and other loans [member]
Disclosure of long-term loans [line items]
Long-term loans	19,039,483	11,420,746
More than 2 years but no more than 3 years [member] | Huaneng Group and its subsidiaries [member]
Disclosure of long-term loans [line items]
Long-term loans	1,281,082	953,082
More than 2 years but no more than 3 years [member] | Bank loans and other loans [member]
Disclosure of long-term loans [line items]
Long-term loans	18,624,576	11,081,242
More than 3 years but no more than 4 years [member] | Huaneng Group and its subsidiaries [member]
Disclosure of long-term loans [line items]
Long-term loans	294,020	928,082
More than 3 years but no more than 4 years [member] | Bank loans and other loans [member]
Disclosure of long-term loans [line items]
Long-term loans	16,388,976	7,769,955
More than 4 years but no more than 5 years [member] | Huaneng Group and its subsidiaries [member]
Disclosure of long-term loans [line items]
Long-term loans	728,225	232,021
More than 4 years but no more than 5 years [member] | Bank loans and other loans [member]
Disclosure of long-term loans [line items]
Long-term loans	11,927,930	7,618,953
More than 5 years [member] | Huaneng Group and its subsidiaries [member]
Disclosure of long-term loans [line items]
Long-term loans	1,310,780	135,000
More than 5 years [member] | Bank loans and other loans [member]
Disclosure of long-term loans [line items]
Long-term loans	¥ 35,746,304	¥ 24,135,880

XML

Long-term loans (Interest payment schedule of long-term loans in future years) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Disclosure of long-term loans [line items]
The interest payment of long-term loans in the future years	¥ 22,064,960	¥ 13,610,208
1 year or less [member]
Disclosure of long-term loans [line items]
The interest payment of long-term loans in the future years	5,071,743	2,987,045
More than 1 year but no more than 2 years [member]
Disclosure of long-term loans [line items]
The interest payment of long-term loans in the future years	4,225,736	2,577,363
More than 2 year but no more than 5 years [member]
Disclosure of long-term loans [line items]
The interest payment of long-term loans in the future years	7,903,397	4,912,222
More than 5 years [member]
Disclosure of long-term loans [line items]
The interest payment of long-term loans in the future years	¥ 4,864,084	¥ 3,133,578

XML

Long-term bonds (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of long-term bonds [line items]
Total actual proceeds received	¥ 7,800,000	¥ 4,200,000	¥ 0
Bonds issued in December 2007 [member]
Disclosure of long-term bonds [line items]
Total actual proceeds received	¥ 5,885,000
Bonds with maturity of 5 years issued in December 2007 [member]
Disclosure of long-term bonds [line items]
Maturity	5 years
Face value	¥ 1,000,000
Annual interest rate	5.67%
Annual effective interest rates	6.13%
Interest paid per annum	¥ 57,000
Bonds with maturity of 7 years issued in December 2007 [member]
Disclosure of long-term bonds [line items]
Maturity	7 years
Face value	¥ 1,700,000
Annual interest rate	5.75%
Annual effective interest rates	6.10%
Interest paid per annum	¥ 98,000
Bonds with maturity of 10 years issued in December 2007 [member]
Disclosure of long-term bonds [line items]
Maturity	10 years
Face value	¥ 3,300,000
Annual interest rate	5.90%
Annual effective interest rates	6.17%
Interest paid per annum	¥ 195,000
Bonds with maturity of 10 years issued in May 2008 [member]
Disclosure of long-term bonds [line items]
Maturity	10 years
Face value	¥ 4,000,000
Annual interest rate	5.20%
Total actual proceeds received	¥ 3,933,000
Annual effective interest rates	5.42%
Interest paid per annum	¥ 208,000
Interest payable	¥ 135,060	135,060
Medium-term notes with maturity of 5 years issued in July 2014 [member]
Disclosure of long-term bonds [line items]
Maturity	5 years
Face value	¥ 4,000,000
Annual interest rate	5.30%
Total actual proceeds received	¥ 3,988,000
Annual effective interest rates	5.37%
Interest paid per annum	¥ 212,000
Interest payable	99,320	99,320
Corporate bonds issued in June 2016 [member]
Disclosure of long-term bonds [line items]
Total actual proceeds received	¥ 4,200,000
Corporate bonds with maturity of 5 years issued in June 2016 [member]
Disclosure of long-term bonds [line items]
Maturity	5 years
Face value	¥ 3,000,000
Annual interest rate	3.48%
Annual effective interest rates	3.48%
Interest paid per annum	¥ 104,400
Interest payable	¥ 57,780	57,780
Corporate bonds with maturity of 10 years issued in June 2016 [member]
Disclosure of long-term bonds [line items]
Maturity	10 years
Face value	¥ 1,200,000
Annual interest rate	3.98%
Annual effective interest rates	3.98%
Interest paid per annum	¥ 47,760
Interest payable	¥ 26,430	¥ 26,430
Medium-term notes with maturity of 5 years issued in July 2017 [member]
Disclosure of long-term bonds [line items]
Maturity	5 years
Face value	¥ 5,000,000
Annual interest rate	4.69%
Total actual proceeds received	¥ 5,000,000
Annual effective interest rates	4.69%
Interest paid per annum	¥ 234,500
Interest payable	¥ 111,150
Debt financing instrument with maturity of 3 years issued in July 2017 [member]
Disclosure of long-term bonds [line items]
Maturity	3 years
Face value	¥ 500,000
Annual interest rate	4.75%
Total actual proceeds received	¥ 499,000
Annual effective interest rates	4.82%
Interest paid per annum	¥ 23,750
Interest payable	¥ 11,020
Corporate bonds with maturity of 3 years issued in November 2017 [member]
Disclosure of long-term bonds [line items]
Maturity	3 years
Face value	¥ 2,300,000
Annual interest rate	4.99%
Total actual proceeds received	¥ 2,299,000
Annual effective interest rates	4.99%
Interest paid per annum	¥ 114,770
Interest payable	¥ 17,610

XML

Other non-current liabilities (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Other non-current liabilities [abstract]
Finance lease payables (a)	¥ 1,600,106	¥ 1,088,846
Government grants - Environmental subsidies (b)	1,245,810	1,122,406
Government grants - Other government grants	179,226	174,216
Other deferred income	1,825,614	379,615
Others	969,052	870,597
Subtotal	5,819,808	3,635,680
Current portion of finance lease payables	(470,985)	(568,645)
Current portion of other non-current liabilities	(64,361)	(247,537)
Subtotal	(535,346)	(816,182)
Total	¥ 5,284,462	¥ 2,819,498

XML

Other non-current liabilities (Obligation under finance leases) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of other non-current liabilities [line items]
Non-current finance lease liabilities	¥ 1,769,161	¥ 1,136,413
Less: total future interest expense	169,055	47,567
Total	1,600,106	1,088,846
Asset-related government grants credited to the statement of comprehensive income	140,130	102,210
Within 1 year [member]
Disclosure of other non-current liabilities [line items]
Non-current finance lease liabilities	500,790	605,806
More than 1 year but no more than 2 years [member]
Disclosure of other non-current liabilities [line items]
Non-current finance lease liabilities	312,125	266,792
More than 2 years but no more than 3 years [member]
Disclosure of other non-current liabilities [line items]
Non-current finance lease liabilities	281,990	82,470
After 3 years [member]
Disclosure of other non-current liabilities [line items]
Non-current finance lease liabilities	¥ 674,256	¥ 181,345

XML

Accounts payable and other liabilities (Detail) - CNY (¥)	Dec. 31, 2017	Dec. 31, 2016
Accounts payable and other liabilities [abstract]
Accounts and notes payable	¥ 15,496,475,000	¥ 12,059,004,000
Payables to contractors for construction	14,491,632,000	10,832,444,000
Retention payables to contractors	2,008,106,000	1,445,383,000
Amounts received in advance	1,504,926,000	365,887,000
Accrued interests	947,302,000	676,462,000
Others	4,451,691,000	3,367,437,000
Total	38,900,132,000	28,746,617,000
Notes payable secured by notes receivable	¥ 0	¥ 0

XML

Accounts payable and other liabilities (Carrying amounts of financial liabilities) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Carrying amounts of financial liabilities [line items]
Carrying amounts of financial liabilities (excluding amounts received in advance) included in accounts payable and other liabilities	¥ 37,395,206	¥ 28,380,730
RMB [member]
Carrying amounts of financial liabilities [line items]
Carrying amounts of financial liabilities (excluding amounts received in advance) included in accounts payable and other liabilities	36,399,243	27,222,632
S$ [member]
Carrying amounts of financial liabilities [line items]
Carrying amounts of financial liabilities (excluding amounts received in advance) included in accounts payable and other liabilities	556,881	669,797
US$ [member]
Carrying amounts of financial liabilities [line items]
Carrying amounts of financial liabilities (excluding amounts received in advance) included in accounts payable and other liabilities	436,358	479,179
JPY [member]
Carrying amounts of financial liabilities [line items]
Carrying amounts of financial liabilities (excluding amounts received in advance) included in accounts payable and other liabilities	2,469	6,917
EUR [member]
Carrying amounts of financial liabilities [line items]
Carrying amounts of financial liabilities (excluding amounts received in advance) included in accounts payable and other liabilities	¥ 255	¥ 2,205

XML

Accounts payable and other liabilities (Ageing analysis of accounts and notes payable) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
The ageing analysis of accounts and notes payable [line items]
Accounts and notes payable	¥ 15,496,475	¥ 12,059,004
Within 1 year [member]
The ageing analysis of accounts and notes payable [line items]
Accounts and notes payable	15,201,380	11,902,522
Between 1 to 2 years [member]
The ageing analysis of accounts and notes payable [line items]
Accounts and notes payable	196,082	100,092
Over 2 years [member]
The ageing analysis of accounts and notes payable [line items]
Accounts and notes payable	¥ 99,013	¥ 56,390

XML

Taxes payable (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Taxes payable [abstract]
VAT payable	¥ 619,329	¥ 439,304
Income tax payable	430,703	440,791
Others	252,178	209,010
Total	¥ 1,302,210	¥ 1,089,105

XML

Short-term bonds (Detail) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017 CNY (¥)
Unsecured super short-term bond with maturity of 365 days issued in August 2016 [member]
Disclosure of short-term bonds [line items]
Face value	¥ 3,000,000
Annual interest rate	2.50%
Maturity	365 days
Annual effective interest rates	2.91%
Unsecured super short-term bond with maturity of 365 days issued in October 2016 [member]
Disclosure of short-term bonds [line items]
Face value	¥ 3,000,000
Annual interest rate	2.60%
Maturity	365 days
Annual effective interest rates	3.01%
Unsecured super short-term bond one with maturity of 270 days issued in April 2016 [member]
Disclosure of short-term bonds [line items]
Face value	¥ 4,000,000
Annual interest rate	2.42%
Maturity	270 days
Annual effective interest rates	2.73%
Unsecured super short-term bond two with maturity of 270 days issued in April 2016 [member]
Disclosure of short-term bonds [line items]
Face value	¥ 3,000,000
Annual interest rate	2.62%
Maturity	270 days
Annual effective interest rates	2.93%
Unsecured super short-term bond with maturity of 270 days issued in May 2016 [member]
Disclosure of short-term bonds [line items]
Face value	¥ 3,000,000
Annual interest rate	2.73%
Maturity	270 days
Annual effective interest rates	3.04%
Unsecured super short-term bond with maturity of 270 days issued in July 2016 [member]
Disclosure of short-term bonds [line items]
Face value	¥ 4,000,000
Annual interest rate	2.50%
Maturity	270 days
Annual effective interest rates	2.81%
Unsecured super short-term bond with maturity of 270 days issued in November 2016 [member]
Disclosure of short-term bonds [line items]
Face value	¥ 2,000,000
Annual interest rate	2.79%
Maturity	270 days
Annual effective interest rates	3.10%
Unsecured super short-term bond with maturity of 180 days issued in November 2016 [member]
Disclosure of short-term bonds [line items]
Face value	¥ 3,000,000
Annual interest rate	2.98%
Maturity	180 days
Annual effective interest rates	3.19%
Unsecured super short-term bond with maturity of 270 days issued in December 2016 [member]
Disclosure of short-term bonds [line items]
Face value	¥ 2,000,000
Annual interest rate	3.45%
Maturity	270 days
Annual effective interest rates	3.78%
Unsecured super short-term bond with maturity of 270 days issued in January 2017 [member]
Disclosure of short-term bonds [line items]
Face value	¥ 4,000,000
Annual interest rate	3.40%
Maturity	270 days
Annual effective interest rates	3.85%
Unsecured super short-term bond with maturity of 270 days issued in February 2017 [member]
Disclosure of short-term bonds [line items]
Face value	¥ 3,000,000
Annual interest rate	3.67%
Maturity	270 days
Annual effective interest rates	3.76%
Unsecured super short-term bond with maturity of 180 days issued in March 2017 [member]
Disclosure of short-term bonds [line items]
Face value	¥ 3,000,000
Annual interest rate	3.60%
Maturity	180 days
Annual effective interest rates	3.76%
Unsecured super short-term bond with maturity of 90 days issued in April 2017 [member]
Disclosure of short-term bonds [line items]
Face value	¥ 4,000,000
Annual interest rate	3.60%
Maturity	90 days
Annual effective interest rates	3.68%
Unsecured super short-term bond with maturity of 150 days issued in June 2017 [member]
Disclosure of short-term bonds [line items]
Face value	¥ 2,000,000
Annual interest rate	4.19%
Maturity	150 days
Annual effective interest rates	4.24%
Unsecured super short-term bond with maturity of 60 days issued in August 2017 [member]
Disclosure of short-term bonds [line items]
Face value	¥ 4,000,000
Annual interest rate	3.96%
Maturity	60 days
Annual effective interest rates	4.00%
Unsecured super short-term bond with maturity of 180 days issued in October 2017 [member]
Disclosure of short-term bonds [line items]
Face value	¥ 4,000,000
Annual interest rate	4.10%
Maturity	180 days
Annual effective interest rates	4.22%
Interest payables	¥ 33,700
Unsecured super short-term bond one with maturity of 180 days issued in November 2017 [member]
Disclosure of short-term bonds [line items]
Face value	¥ 2,000,000
Annual interest rate	4.19%
Maturity	180 days
Annual effective interest rates	4.35%
Interest payables	¥ 10,800
Unsecured super short-term bond two with maturity of 180 days issued in November 2017 [member]
Disclosure of short-term bonds [line items]
Face value	¥ 1,000,000
Annual interest rate	4.17%
Maturity	180 days
Annual effective interest rates	4.19%
Interest payables	¥ 4,570
Unsecured super short-term bond with maturity of 90 days issued in December 2017 [member]
Disclosure of short-term bonds [line items]
Face value	¥ 4,000,000
Annual interest rate	4.17%
Maturity	90 days
Annual effective interest rates	4.35%
Interest payables	¥ 14,170

XML

Short-term loans (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of short-term loans [line items]
Short-term loans	¥ 80,251,348	¥ 57,668,874
Secured [member] | RMB [member] | Fixed rate [member]
Disclosure of short-term loans [line items]
Short-term loans	¥ 24,000	¥ 13,500
Annual interest rate	4.71%-5.50%	3.00%
Secured [member] | RMB [member] | Variable rate [member]
Disclosure of short-term loans [line items]
Short-term loans	¥ 0	¥ 112,034
Annual interest rate		2.77%-3.80%
Unsecured [member] | RMB [member] | Fixed rate [member]
Disclosure of short-term loans [line items]
Short-term loans	¥ 10,450,248	¥ 3,319,947
Annual interest rate	3.92%-4.35%	3.70%-4.35%
Unsecured [member] | RMB [member] | Variable rate [member]
Disclosure of short-term loans [line items]
Short-term loans	¥ 69,777,100	¥ 54,223,393
Annual interest rate	3.74%-4.35%	3.57%-4.35%

XML

Short-term loans (Narrative) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Conditions of short-term loans [line items]
Short-term loans represented the notes receivable that were discounted with resource	¥ 24,000	¥ 126,000
Short-term loans	80,251,348	57,668,874
Xi'an Thermal Power Research Institute Co., Ltd. ("Xi'an Thermal") [member]
Conditions of short-term loans [line items]
Short-term loans	¥ 100,000	¥ 100,000
Annual interest rate	4.13%	3.92%
Huaneng Finance [member]
Conditions of short-term loans [line items]
Short-term loans	¥ 6,505,000	¥ 3,355,000
Annual interest rate	from 3.92% to 4.35%	from 3.92% to 4.13%
A subsidiary of Huaneng Energy & Communications Holdings Co., Ltd. [member]
Conditions of short-term loans [line items]
Short-term loans	¥ 753,000	¥ 0
Annual interest rate	from 3.92% to 4.13%

XML

Deferred income tax assets and liabilities (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Deferred income tax assets and liabilities [abstract]
Deferred income tax assets before offsetting	¥ 3,604,577	¥ 2,432,552	¥ 2,389,857
Offset amount	(1,304,486)	(1,168,595)
Deferred income tax assets after offsetting	2,300,091	1,263,957
Deferred income tax liabilities before offsetting	(5,871,166)	(3,431,347)	(3,819,609)
Offset amount	1,304,486	1,168,595
Deferred income tax liabilities after offsetting	(4,566,680)	(2,262,752)
Net deferred income tax assets and liabilities	¥ (2,266,589)	¥ (998,795)	¥ (1,429,752)	¥ (926,481)

XML

Deferred income tax assets and liabilities (Gross movement on deferred income tax accounts) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Deferred income tax assets and liabilities [abstract]
Beginning of the year	¥ (998,795)	¥ (1,429,752)	¥ (926,481)
Business combination (Note 40)	(2,322,513)	(58,929)	(1,007,147)
Disposal of subsidiaries (Note 6)	17,407	0	0
Credited to profit or loss (Note 33)	724,712	440,817	687,206
Charged to other comprehensive income	330,834	87,775	(198,525)
Currency translation differences	(18,234)	(38,706)	15,195
End of the year	¥ (2,266,589)	¥ (998,795)	¥ (1,429,752)

XML

Deferred income tax assets and liabilities (Movements in deferred income tax assets without taking into consideration offsetting) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of deferred income tax assets and liabilities [line items]
Beginning of the year	¥ 2,432,552	¥ 2,389,857
Business combination	1,133,930	73,400
Disposal of subsidiaries (Note 6)	(78,484)
Credited to profit or loss	124,987	141,686
(Charged) /credited to other comprehensive income	(11,905)	(182,400)
Currency translation differences	3,497	10,009
End of the year	3,604,577	2,432,552
Hedging reserve [member]
Disclosure of deferred income tax assets and liabilities [line items]
Beginning of the year	17,476	199,876
Business combination	0	0
Disposal of subsidiaries (Note 6)	0
Credited to profit or loss	0	0
(Charged) /credited to other comprehensive income	(11,905)	(182,400)
Currency translation differences	0	0
End of the year	5,571	17,476
Amortization of land use rights [member]
Disclosure of deferred income tax assets and liabilities [line items]
Beginning of the year	13,915	14,417
Business combination	0	0
Disposal of subsidiaries (Note 6)	0
Credited to profit or loss	(493)	(502)
(Charged) /credited to other comprehensive income	0	0
Currency translation differences	0	0
End of the year	13,422	13,915
Provision for impairment loss [member]
Disclosure of deferred income tax assets and liabilities [line items]
Beginning of the year	607,154	399,418
Business combination	0	66,560
Disposal of subsidiaries (Note 6)	(10,686)
Credited to profit or loss	(2,593)	140,969
(Charged) /credited to other comprehensive income	0	0
Currency translation differences	82	207
End of the year	593,957	607,154
Depreciation [member]
Disclosure of deferred income tax assets and liabilities [line items]
Beginning of the year	538,204	572,379
Business combination	574,600	6,840
Disposal of subsidiaries (Note 6)	(9,962)
Credited to profit or loss	(70,209)	(41,015)
(Charged) /credited to other comprehensive income	0	0
Currency translation differences	0	0
End of the year	1,032,633	538,204
Accrued expenses [member]
Disclosure of deferred income tax assets and liabilities [line items]
Beginning of the year	42,123	40,938
Business combination	5,052	0
Disposal of subsidiaries (Note 6)	0
Credited to profit or loss	7,076	1,185
(Charged) /credited to other comprehensive income	0	0
Currency translation differences	0	0
End of the year	54,251	42,123
VAT refunds on purchases of domestically manufactured equipment [member]
Disclosure of deferred income tax assets and liabilities [line items]
Beginning of the year	205,009	230,442
Business combination	0	0
Disposal of subsidiaries (Note 6)	0
Credited to profit or loss	(25,433)	(25,433)
(Charged) /credited to other comprehensive income	0	0
Currency translation differences	0	0
End of the year	179,576	205,009
Unused tax losses [member]
Disclosure of deferred income tax assets and liabilities [line items]
Beginning of the year	230,988	235,984
Business combination	139,387	0
Disposal of subsidiaries (Note 6)	(5,566)
Credited to profit or loss	196,613	(5,128)
(Charged) /credited to other comprehensive income	0	0
Currency translation differences	0	132
End of the year	561,422	230,988
Others [member]
Disclosure of deferred income tax assets and liabilities [line items]
Beginning of the year	777,683	696,403
Business combination	414,891	0
Disposal of subsidiaries (Note 6)	(52,270)
Credited to profit or loss	20,026	71,610
(Charged) /credited to other comprehensive income	0	0
Currency translation differences	3,415	9,670
End of the year	¥ 1,163,745	¥ 777,683

XML

Deferred income tax assets and liabilities (Movements in deferred income tax liabilities without taking into consideration offsetting) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of deferred income tax assets and liabilities [line items]
Beginning of the year	¥ (3,431,347)	¥ (3,819,609)
Business combination (Note 40)	(3,456,443)	(132,329)
Disposal of subsidiaries (Note 6)	95,891
Credited to profit or loss	599,725	299,131
(Charged) /credited to other comprehensive loss	342,739	270,175
Currency translation differences	(21,731)	(48,715)
End of the year	(5,871,166)	(3,431,347)
Hedging reserve [member]
Disclosure of deferred income tax assets and liabilities [line items]
Beginning of the year	(18,399)	0
Business combination (Note 40)	0	0
Disposal of subsidiaries (Note 6)	0
Credited to profit or loss	0	0
(Charged) /credited to other comprehensive loss	(5,558)	(26,530)
Currency translation differences	(304)	8,131
End of the year	(24,261)	(18,399)
Fair value gains [member]
Disclosure of deferred income tax assets and liabilities [line items]
Beginning of the year	(348,537)	(645,242)
Business combination (Note 40)	(1,736)	0
Disposal of subsidiaries (Note 6)	0
Credited to profit or loss	0	0
(Charged) /credited to other comprehensive loss	348,297	296,705
Currency translation differences	0	0
End of the year	(1,976)	(348,537)
Amortization of land use rights [member]
Disclosure of deferred income tax assets and liabilities [line items]
Beginning of the year	(891,155)	(904,173)
Business combination (Note 40)	(148,129)	(10,423)
Disposal of subsidiaries (Note 6)	1,761
Credited to profit or loss	27,457	24,948
(Charged) /credited to other comprehensive loss	0	0
Currency translation differences	(540)	(1,507)
End of the year	(1,010,606)	(891,155)
Depreciation [member]
Disclosure of deferred income tax assets and liabilities [line items]
Beginning of the year	(1,149,054)	(1,291,706)
Business combination (Note 40)	(3,209,672)	0
Disposal of subsidiaries (Note 6)	22,162
Credited to profit or loss	525,780	169,088
(Charged) /credited to other comprehensive loss	0	0
Currency translation differences	(9,490)	(26,436)
End of the year	(3,820,274)	(1,149,054)
Power generation license [member]
Disclosure of deferred income tax assets and liabilities [line items]
Beginning of the year	(654,363)	(625,460)
Business combination (Note 40)	0	0
Disposal of subsidiaries (Note 6)	0
Credited to profit or loss	0	0
(Charged) /credited to other comprehensive loss	0	0
Currency translation differences	(11,397)	(28,903)
End of the year	(665,760)	(654,363)
Mining rights [member]
Disclosure of deferred income tax assets and liabilities [line items]
Beginning of the year	(129,383)	(157,215)
Business combination (Note 40)	0	0
Disposal of subsidiaries (Note 6)	0
Credited to profit or loss	0	27,832
(Charged) /credited to other comprehensive loss	0	0
Currency translation differences	0	0
End of the year	(129,383)	(129,383)
Territorial water use right [member]
Disclosure of deferred income tax assets and liabilities [line items]
Beginning of the year	(72,432)	(74,201)
Business combination (Note 40)	0	0
Disposal of subsidiaries (Note 6)	68,696
Credited to profit or loss	1,327	1,769
(Charged) /credited to other comprehensive loss	0	0
Currency translation differences	0	0
End of the year	(2,409)	(72,432)
Others [member]
Disclosure of deferred income tax assets and liabilities [line items]
Beginning of the year	(168,024)	(121,612)
Business combination (Note 40)	(96,906)	(121,906)
Disposal of subsidiaries (Note 6)	3,272
Credited to profit or loss	45,161	75,494
(Charged) /credited to other comprehensive loss	0	0
Currency translation differences	0	0
End of the year	¥ (216,497)	¥ (168,024)

XML

Deferred income tax assets and liabilities (Narrative) (Detail) - CNY (¥)	Dec. 31, 2017	Dec. 31, 2016
Disclosure of deferred income tax assets and liabilities [line items]
Deferred tax liabilities	¥ 4,566,680,000	¥ 2,262,752,000
Temporary differences relating to interest in equity method investees [member]
Disclosure of deferred income tax assets and liabilities [line items]
Taxable temporary differences	2,950,000,000	3,390,000,000
Deferred tax liabilities	0	0
Temporary differences relating to the undistributed profit of a wholly-owned foreign subsidiary [member]
Disclosure of deferred income tax assets and liabilities [line items]
Taxable temporary differences	3,060,000,000	3,540,000,000
Deferred tax liabilities	¥ 0	¥ 0

XML

Deferred income tax assets and liabilities (Unrecognized deferred income tax assets in respect of certain deductible temporary differences and accumulated tax losses) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deferred income tax assets and liabilities [abstract]
Deductible temporary differences	¥ 4,672,788	¥ 2,957,316
Unused tax losses	8,665,079	6,669,820
Total	¥ 13,337,867	¥ 9,627,136

XML

Deferred income tax assets and liabilities (Summarized information of expiry dates of tax losses) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Disclosure of deferred income tax assets and liabilities [line items]
The tax losses	¥ 8,665,079	¥ 6,669,820
Not later than one year [member]
Disclosure of deferred income tax assets and liabilities [line items]
The tax losses	1,557,045	1,841,365
Later than one year and not later than two years [member]
Disclosure of deferred income tax assets and liabilities [line items]
The tax losses	1,579,066	1,122,070
Later than two years and not later than three years [member]
Disclosure of deferred income tax assets and liabilities [line items]
The tax losses	1,524,531	1,195,811
Later than three years and not later than four years [member]
Disclosure of deferred income tax assets and liabilities [line items]
The tax losses	1,558,573	1,061,468
Later than four years and not later than five years [member]
Disclosure of deferred income tax assets and liabilities [line items]
The tax losses	¥ 2,445,864	¥ 1,449,106

XML

Additional financial information to consolidated statements of financial position (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2017	Dec. 31, 2016
Additional financial information to consolidated statements of financial position [abstract]
Net current liabilities	¥ 107,413	¥ 93,230
Total assets less current liabilities	¥ 240,639	¥ 184,643

XML

Income tax expense (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015
Income tax expense [abstract]
Current income tax expense	¥ 1,942,238	¥ 3,905,968		¥ 6,386,149
Deferred income tax (Note 31)	(724,712)	(440,817)		(687,206)
Total	¥ 1,217,526	¥ 3,465,151	[1]	¥ 5,698,943	[1]

[1] Restated. The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

XML

Income tax expense (Reconciliation of effective income tax rate from notional income tax rate) (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income tax expense [abstract]
Notional tax on profit before income tax expense, calculated at the applicable income tax rates in the countries concerned	26.13%	25.16%	25.11%
Effect of tax losses not recognized	18.45%	1.58%	(0.12%)
Effect of deductible temporary differences not recognized	6.04%	(0.20%)	(0.16%)
Effect of non-taxable income	(12.37%)	(2.89%)	(1.77%)
Effect of non-deductible expenses	7.05%	1.09%	1.37%
Others	(1.84%)	0.35%	0.39%
Effective tax rate	43.46%	25.09%	24.82%

XML

Income tax expense (Narrative) (Detail) - CNY (¥)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015
Detail of income tax expense [line items]
Profits tax	¥ 1,217,526,000	¥ 3,465,151,000	[1]	¥ 5,698,943,000	[1]
Applicable income tax rate	26.13%	25.16%		25.11%
Hong Kong [member]
Detail of income tax expense [line items]
Profits tax	¥ 0	¥ 0
Estimated assessable profits	¥ 0	¥ 0
PRC [member]
Detail of income tax expense [line items]
Applicable income tax rate	25.00%	25.00%
Singapore [member]
Detail of income tax expense [line items]
Applicable income tax rate	17.00%	17.00%

[1] Restated. The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

XML

Earnings per share (Detail) - CNY (¥) ¥ / shares in Units, ¥ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Earnings per share [abstract]
Profit/ (loss) from continuing operations attributable to shareholders		¥ 1,579,836	¥ 8,520,427	¥ 13,651,933
Less: cumulative distribution of perpetual corporate bonds		68,600	0	0
Consolidated net profit attributable to ordinary Shareholders of the Company		¥ 1,511,236	¥ 8,520,427	¥ 13,651,933
Weighted average number of the Company's outstanding ordinary shares ('000)	[1]	15,200,383,000	15,200,383,000	14,485,383,000
Basic and diluted earnings per share (RMB)		¥ 0.10	¥ 0.56	¥ 0.94
Weighted average number of ordinary shares [abstract]
Issued ordinary shares at the beginning of the year		15,200,383,440	15,200,383,440	14,420,383,000
Effect of share issue		0	0	65,000,000
Weighted average number of ordinary shares at the end of the year	[1]	15,200,383,000	15,200,383,000	14,485,383,000
Dilutive effect on earnings per share		¥ 0	¥ 0
Dilutive potential ordinary		0	0

[1] Weighted average number of ordinary shares: 2017 2016 2015 '000 '000 '000 Issued ordinary shares at 1 January 15,200,383 |15,200,383 |14,420,383 Effect of share issue - | - | 65,000 Weighted average number of ordinary shares at 31 December 15,200,383 |15,200,383 |14,485,383

XML

Notes to consolidated statement of cash flows (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Consolidated Statements of Cash Flows [abstract]
Total bank balances and cash	¥ 9,364,823	¥ 7,881,630	¥ 7,537,813
Less: Restricted cash	82,433	71,129	59,563
Cash and cash equivalents as at year end	¥ 9,282,390	¥ 7,810,501	¥ 7,478,250	¥ 12,238,367

XML

Notes to consolidated statement of cash flows (Currencies of bank balances and cash denominated) (Detail) - CNY (¥)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Currencies of bank balances and cash denominated [line items]
Bank balances and cash	¥ 9,364,823,000	¥ 7,881,630,000	¥ 7,537,813,000
Material non-cash investing and financing transactions	0	0
RMB [member]
Currencies of bank balances and cash denominated [line items]
Bank balances and cash	8,213,100,000	6,691,911,000	5,847,363,000
S$ [member]
Currencies of bank balances and cash denominated [line items]
Bank balances and cash	835,995,000	869,591,000	1,130,356,000
US$ [member]
Currencies of bank balances and cash denominated [line items]
Bank balances and cash	315,535,000	319,944,000	559,761,000
JPY [member]
Currencies of bank balances and cash denominated [line items]
Bank balances and cash	193,000	184,000	205,000
HK$ [member]
Currencies of bank balances and cash denominated [line items]
Bank balances and cash	¥ 0	¥ 0	¥ 128,000

XML

Notes to consolidated statement of cash flows (Changes in group's liabilities from financing activities) (Detail) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017 CNY (¥)
Loans (Note24, 30) [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
The group's liabilities from financing activities at the beginning of the year	¥ 132,220,120
(a) Business combination	47,562,251
(b) Changes from financing cash flows:
Proceeds from new bank loans	140,270,455
Repayment of bank loans	(113,769,036)
Proceeds from new bonds	0
Repayment of bonds	0
Capital element of finance lease rentals paid	0
Interest element of finance lease rentals paid	0
Interest paid	0
Others	(3,135)
(c) Exchange adjustments	82,298
(d) Changes in fair value	0
(e) Other changes:
New finance leases	0
Interest expenses	0
Capitalised borrowing costs	0
Disposal of subsidiaries	(1,166,899)
Others	184,710
The group's liabilities from financing activities at the end of the year	205,380,764
Bonds (Note25, 29) [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
The group's liabilities from financing activities at the beginning of the year	42,788,810
(a) Business combination	0
(b) Changes from financing cash flows:
Proceeds from new bank loans	0
Repayment of bank loans	0
Proceeds from new bonds	38,788,679
Repayment of bonds	(50,300,000)
Capital element of finance lease rentals paid	0
Interest element of finance lease rentals paid	0
Interest paid	(885,000)
Others	(80,643)
(c) Exchange adjustments	0
(d) Changes in fair value	0
(e) Other changes:
New finance leases	0
Interest expenses	747,377
Capitalised borrowing costs	0
Disposal of subsidiaries	0
Others	0
The group's liabilities from financing activities at the end of the year	31,059,223
Accrued interests (Note 27) [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
The group's liabilities from financing activities at the beginning of the year	676,462
(a) Business combination	85,380
(b) Changes from financing cash flows:
Proceeds from new bank loans	0
Repayment of bank loans	0
Proceeds from new bonds	0
Repayment of bonds	0
Capital element of finance lease rentals paid	0
Interest element of finance lease rentals paid	0
Interest paid	(9,195,102)
Others	0
(c) Exchange adjustments	2,095
(d) Changes in fair value	0
(e) Other changes:
New finance leases	0
Interest expenses	8,902,402
Capitalised borrowing costs	476,065
Disposal of subsidiaries	0
Others	0
The group's liabilities from financing activities at the end of the year	947,302
Finance leases payables (Note 26) [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
The group's liabilities from financing activities at the beginning of the year	1,088,846
(a) Business combination	521,083
(b) Changes from financing cash flows:
Proceeds from new bank loans	0
Repayment of bank loans	0
Proceeds from new bonds	0
Repayment of bonds	0
Capital element of finance lease rentals paid	(636,145)
Interest element of finance lease rentals paid	(58,874)
Interest paid	0
Others	0
(c) Exchange adjustments	235
(d) Changes in fair value	0
(e) Other changes:
New finance leases	659,895
Interest expenses	99,225
Capitalised borrowing costs	0
Disposal of subsidiaries	0
Others	(74,159)
The group's liabilities from financing activities at the end of the year	1,600,106
Interest rate swaps contracts (liabilities) (Note 14) [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
The group's liabilities from financing activities at the beginning of the year	169,201
(a) Business combination	0
(b) Changes from financing cash flows:
Proceeds from new bank loans	0
Repayment of bank loans	0
Proceeds from new bonds	0
Repayment of bonds	0
Capital element of finance lease rentals paid	0
Interest element of finance lease rentals paid	0
Interest paid	0
Others	0
(c) Exchange adjustments	0
(d) Changes in fair value	(38,558)
(e) Other changes:
New finance leases	0
Interest expenses	0
Capitalised borrowing costs	0
Disposal of subsidiaries	0
Others	0
The group's liabilities from financing activities at the end of the year	¥ 130,643

XML

Related party balances and transactions (Basic information of related parties) (Detail)	12 Months Ended
	Dec. 31, 2017
Huaneng Group [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	Ultimate parent company
HIPDC [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	Parent company
Huaneng Energy & Communications Holdings Co., Ltd. and its subsidiaries [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	Subsidiaries of Huaneng Group	[1]
Huaneng Property Co., Ltd. and its subsidiaries [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	Subsidiaries of Huaneng Group
Xi'an Thermal and its subsidiaries [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	Subsidiaries of Huaneng Group
Huaneng Group Technology Innovation Center [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	A subsidiary of Huaneng Group
Huaneng Hulunbuir Energy Development Company Ltd. and its subsidiaries [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	Subsidiaries of Huaneng Group
Alltrust Insurance Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	A subsidiary of Huaneng Group
North United Power Co., Ltd. and its subsidiaries [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	Subsidiaries of Huaneng Group
Huaneng Group Clean Energy Technology Research Institute Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	A subsidiary of Huaneng Group
Huaneng Renewables Corporation Limited and its subsidiaries [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	Subsidiaries of Huaneng Group
Huaneng Carbon Assets Management Company Limited [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	A subsidiary of Huaneng Group
Huaneng Group Hong Kong Limited Company [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	A subsidiary of Huaneng Group
Huaneng Lancangjiang Hydropower Co., Inc. and its subsidiaries [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	Subsidiaries of Huaneng Group
Changping Huaneng Training Center [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	A subsidiary of Huaneng Group
Huaneng Hainan Industry Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	A subsidiary of Huaneng Group
Huaneng Baishan Coal Gangue Power Generation Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	A subsidiary of Huaneng Group
Great Wall Securities Co., Ltd. ("Great Wall Securities") [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	A subsidiary of Huaneng Group
Huaneng Nuclear Power Development Company Ltd. [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	A subsidiary of Huaneng Group
Huaneng Tibet Yarlung Zangbo River Hydropower Development & Investment Company Ltd. and its subsidiaries [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	Subsidiaries of Huaneng Group
Huaneng Xining Power Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	A subsidiary of Huaneng Group
Huaneng Coal Business Sector Co., Ltd. and its subsidiaries [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	Subsidiaries of Huaneng Group
Huaneng Integrated Industries Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	A subsidiary of Huaneng Group
Huaneng Ningxia Energy Company Ltd. [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	A subsidiary of Huaneng Group
Huaneng Shaanxi Power Generation Limited and its subsidiaries [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	Subsidiaries of Huaneng Group
Huaneng Xinjiang Energy Development Company Ltd. and its subsidiaries [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	Subsidiaries of Huaneng Group
Huaneng Gansu Energy Development Company Ltd. and its subsidiaries [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	Subsidiaries of Huaneng Group
Huaneng Capital Services Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	A subsidiary of Huaneng Group
Huaneng Shaanxi Qinling Power Generation Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	A subsidiary of Huaneng Group
Ningxia Daba Power Generation Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	A subsidiary of Huaneng Group
Huaneng Shandong Shidao Bay Nuclear Power Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	A subsidiary of Huaneng Group
Huangtai #8 Power Plant [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	An investee with significant influence
Shanghai Time Shipping [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	A joint venture of the Company
Jiangsu Nantong Power [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	A joint venture of the Company
Huaneng Yingkou Port Limited Liability Company [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	A joint venture of the Company
Luyi Power [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	A joint venture of the Company
Ruyi (Hong Kong) Energy and its subsidiaries [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	Joint ventures of the Company
Suzhou Sugao Renewables Service Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	A joint venture of the Company
Liaocheng Luxi Fuel Co., Ltd. Company [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	An associate of the Company
Zhengzhou Airport Xinggang Power Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	An associate of the Company
Chongqing Huaneng Lime Company Limited [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	An associate of the Company
Hainan Nuclear [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	An associate of the Company
Sichuan Hydropower [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	An associate of the Company and also a subsidiary of Huaneng Group
Hanfeng Power [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	An associate of the Company and also a subsidiary of Huaneng Group
Tiancheng Financial Leasing [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	An associate of the Company and also a subsidiary of Huaneng Group
Huaneng Shidao Bay Nuclear Power Development Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	An associate of the Company and also a subsidiary of Huaneng Group
Xiapu Nuclear Power Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	An associate of the Company and also a subsidiary of Huaneng Group
Huaneng Finance [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	An associate of the Company and also a subsidiary of Huaneng Group
Huaneng (Tianjing) Coal Gasification Power Generation Co., Ltd. [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	An associate of the Company and also a subsidiary of Huaneng Group
Huaneng Group Fuel Company and its subsidiaries [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	Associates of the Company and also subsidiaries of Huaneng Group
Other government-related enterprises [member]
Disclosure of transactions between related parties [line items]
Nature of relationship	Related parties of the Company	[2]

[1] Transactions with subsidiaries of Huaneng Group which also are associates of the Company and its subsidiaries are presented as transactions with subsidiaries of Huaneng Group for note 36(a) and 36(b).

[2] Huaneng Group is a state-owned enterprise. In accordance with the revised IAS 24, "Related Party Disclosures", government-related enterprises, other than entities under Huaneng Group, which the PRC government has control, joint control or significant influence over are also considered as related parties of the Company and its subsidiaries ("other government-related enterprises").

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Related party balances and transactions (Related party balances) (Cash deposits in related parties) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of transactions between related parties [line items]
Savings deposit	¥ 7,506,706	¥ 5,155,002
Bottom of range [member]
Disclosure of transactions between related parties [line items]
Annual interest rate	0.35%	0.35%
Top of range [member]
Disclosure of transactions between related parties [line items]
Annual interest rate	1.35%	1.35%
Huaneng Finance [member]
Disclosure of transactions between related parties [line items]
Savings deposit	¥ 7,506,706	¥ 5,155,000
Great Wall Securities [member]
Disclosure of transactions between related parties [line items]
Savings deposit	¥ 0	¥ 2

XML

Related party balances and transactions (Related party balances) (Balances due from related parties) (Detail) - CNY (¥)	Dec. 31, 2017	Dec. 31, 2016
Disclosure of transactions between related parties [line items]
Provision made on receivable balances from related parties	¥ 0	¥ 0
Due from related party	2,410,857,000	1,126,044,000
Huaneng Group [member]
Disclosure of transactions between related parties [line items]
Due from related party	860,941,000	708,000
HIPDC [member]
Disclosure of transactions between related parties [line items]
Due from related party	99,000	0
Joint ventures of the Company [member]
Disclosure of transactions between related parties [line items]
Due from related party	360,442,000	806,112,000
Associates [member]
Disclosure of transactions between related parties [line items]
Due from related party	89,083,000	0
Subsidiaries of Huaneng Group [member]
Disclosure of transactions between related parties [line items]
Due from related party	196,621,000	319,224,000
Huangtai #8 Power Plant [member]
Disclosure of transactions between related parties [line items]
Due from related party	¥ 903,671,000	¥ 0

XML

Related party balances and transactions (Related party balances) (Balances due to related parties) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Disclosure of transactions between related parties [line items]
Due to related party	¥ 4,858,053	¥ 4,760,754
Huaneng Group [member]
Disclosure of transactions between related parties [line items]
Due to related party	260,306	12,232
HIPDC [member]
Disclosure of transactions between related parties [line items]
Due to related party	16,138	14,183
Joint ventures of the Company [member]
Disclosure of transactions between related parties [line items]
Due to related party	336,170	325,590
Associates [member]
Disclosure of transactions between related parties [line items]
Due to related party	5,751	263,154
Subsidiaries of Huaneng Group [member]
Disclosure of transactions between related parties [line items]
Due to related party	¥ 4,239,688	¥ 4,145,595

XML

Related party balances and transactions (Related party balances) (Narrative) (Detail) - CNY (¥) ¥ in Millions	Dec. 31, 2017	Dec. 31, 2016
Other government-related enterprises [member]
Disclosure of transactions between related parties [line items]
Long-term loans (including current portion) and short-term loans	¥ 203,000	¥ 130,000
Subsidiaries of Huaneng Group [member]
Disclosure of transactions between related parties [line items]
Prepayment for construction materials	¥ 21	¥ 67

XML

Related party balances and transactions (Related party transactions) (Procurement of goods and receiving services) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Huaneng Group [member]
Disclosure of transactions between related parties [line items]
Technical services and engineering contracting services	¥ 0	¥ 0	¥ 50
Other purchases	446	451	0
Subsidiaries of Huaneng Group [member]
Disclosure of transactions between related parties [line items]
Purchase of coal and transportation services	19,945,752	17,212,984	16,575,700
Technical services and engineering contracting services	1,024,369	1,055,251	769,176
Purchase of equipment	347,163	483,058	302,387
Purchase of power generation quota	0	195,528	287,779
Other purchases	716	6,472	7,073
Joint ventures of the Company [member]
Disclosure of transactions between related parties [line items]
Purchase of coal and transportation services	2,054,209	2,150,844	1,816,954
Entrusting other parties for power generation	28,953	0	0
An associate of the Company [member]
Disclosure of transactions between related parties [line items]
Other purchases	¥ 27,732	¥ 43,808	¥ 44,591

XML

Related party balances and transactions (Related party transactions) (Sales of goods and providing services) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Huaneng Group [member]
Disclosure of transactions between related parties [line items]
Service provided	¥ 907	¥ 0	¥ 0
HIPDC [member]
Disclosure of transactions between related parties [line items]
Service provided	520	0	0
Subsidiaries of Huaneng Group [member]
Disclosure of transactions between related parties [line items]
Sales of power generation quota	0	1,165	135,085
Sales of goods	1,114,347	0	0
Other sales	15,247	189,914	40,780
Service provided	25,229	31,135	50,627
Provision of entrusted power generation	58,639	0	0
Joint ventures of the Company [member]
Disclosure of transactions between related parties [line items]
Other sales	407,697	9,490	23,003
Service provided	319,844	59,049	133,332
Other related party [member]
Disclosure of transactions between related parties [line items]
Provision of entrusted power generation	¥ 0	¥ 0	¥ 33,129

XML

Related party balances and transactions (Related party transactions) (Other related party transactions) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
HIPDC [member]
Disclosure of transactions between related parties [line items]
Rental charge on leasehold	¥ 106,885	¥ 157,264	¥ 161,941
Drawdown of loans	0	210	0
Interest expense on loans	10	13,136	114,687
Subsidiaries of Huaneng Group [member]
Disclosure of transactions between related parties [line items]
Rental charge on leasehold	141,542	128,932	130,591
Rental income from leasehold	2,509	5,724	9,115
Drawdown of loans	15,374,480	4,035,000	2,660,500
Interest expense on loans	589,012	217,098	158,695
Interest income on loans	4,344	0	0
Capital injection from a subsidiary of Huaneng Group	274,752	0	286,312
Capital injection	0	157,500	683,550
Pre-construction cost paid by	23,529	765	12,254
Finance lease payments received from	0	2,960,000	100,000
A joint venture of the Company [member]
Disclosure of transactions between related parties [line items]
Rental charge on leasehold	2,128	0	0
Rental income from leasehold	7,448	7,750	10,759
Interest income on loans	3,329	3,488	4,572
Capital injection	249,716	18,200	0
Pre-construction cost paid by	179	0	0
Huaneng Group [member]
Disclosure of transactions between related parties [line items]
Drawdown of loans	665,225	0	0
Interest expense on loans	33,481	30,514	32,573
Entrusted management fee	13,453	24,950	24,950
Trusteeship management income	1,518	1,700	1,700
An associate of the Company [member]
Disclosure of transactions between related parties [line items]
Interest income on loans	917	0	0
Capital injection	52,200	100,418	206,230
Huangtai #8 Power Plant [member]
Disclosure of transactions between related parties [line items]
Net proceeds received from investee with significant influence	72,920	0	0
Finance lease to investee with significant influence	86,946	0	0
Interest income from finance lease	¥ 11,626	¥ 0	¥ 0

XML

Related party balances and transactions (Guarantees) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Huaneng Group [member]
Disclosure of transactions between related parties [line items]
Long-term loans guaranteed by related parties	¥ 1,675,147	¥ 565,992
HIPDC [member]
Disclosure of transactions between related parties [line items]
Long-term loans guaranteed by related parties	2,099,600	2,142,000
Long-term bonds guaranteed by related parties	4,000,000	4,000,000
Government-related banks [member]
Disclosure of transactions between related parties [line items]
Long-term bonds guaranteed by related parties	¥ 0	¥ 3,300,000

XML

Related party balances and transactions (Pre-tax benefits and social insurance of key management personnel) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Related party balances and transactions [abstract]
Salaries	¥ 7,676	¥ 8,225	¥ 9,064
Pension	1,511	1,521	1,470
Total	¥ 9,187	¥ 9,746	¥ 10,534

XML

Related party balances and transactions (Related party commitments) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Disclosure of transactions between related parties [line items]
Fuel purchase and transportation commitments	¥ 1,391,057	¥ 1,254,338
Operating lease commitments	248,006	351,894
Subsidiaries of Huaneng Group [member]
Disclosure of transactions between related parties [line items]
Capital commitments	290,041	439,571
Fuel purchase and transportation commitments	1,111,649	963,306
Operating lease commitments	171,804	286,340
A joint venture of the Company [member]
Disclosure of transactions between related parties [line items]
Fuel purchase and transportation commitments	279,408	291,032
HIPDC [member]
Disclosure of transactions between related parties [line items]
Operating lease commitments	¥ 76,202	¥ 65,554

XML

Labor cost (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of labor cost [line items]
Amount of contributions paid by the Company and its subsidiaries charged to profit or loss	¥ 10,590,084	¥ 8,043,406	¥ 7,751,551
Publicly administered retirement plan for PRC employees [member]
Disclosure of labor cost [line items]
Amount of contributions paid by the Company and its subsidiaries	1,156,000	873,000
Amount of contributions paid by the Company and its subsidiaries charged to profit or loss	¥ 1,110,000	¥ 832,000
Publicly administered retirement plan for PRC employees [member] | Bottom of range [member]
Disclosure of labor cost [line items]
Contribution rate of employee benefits to basic salary	14.00%	14.00%
Publicly administered retirement plan for PRC employees [member] | Top of range [member]
Disclosure of labor cost [line items]
Contribution rate of employee benefits to basic salary	22.00%	22.00%
Supplementary defined contribution retirement scheme for PRC employees [member]
Disclosure of labor cost [line items]
Amount of contributions paid by the Company and its subsidiaries	¥ 312,000	¥ 244,000
Amount of contributions paid by the Company and its subsidiaries charged to profit or loss	299,000	233,000
Central provident funds for Singapore employees [member]
Disclosure of labor cost [line items]
Amount of contributions paid by the Company and its subsidiaries	19,920	18,470
Amount of contributions paid by the Company and its subsidiaries charged to profit or loss	¥ 19,920	¥ 18,470
Central provident funds for Singapore employees [member] | Bottom of range [member]
Disclosure of labor cost [line items]
Contribution rate of employee benefits to basic salary	6.50%	6.50%
Central provident funds for Singapore employees [member] | Top of range [member]
Disclosure of labor cost [line items]
Contribution rate of employee benefits to basic salary	16.00%	16.00%
Housing funds for employees [member]
Disclosure of labor cost [line items]
Amount of contributions paid by the Company and its subsidiaries	¥ 784,000	¥ 604,000
Amount of contributions paid by the Company and its subsidiaries charged to profit or loss	748,000	572,000
Social insurance for employees [member]
Disclosure of labor cost [line items]
Amount of contributions paid by the Company and its subsidiaries	901,000	699,000
Amount of contributions paid by the Company and its subsidiaries charged to profit or loss	¥ 857,000	¥ 664,000

XML

Directors', supervisors' and senior management's emoluments (Detail)		12 Months Ended
		Dec. 31, 2017 CNY (¥) employees shares		Dec. 31, 2016 CNY (¥) employees shares	Dec. 31, 2015 CNY (¥)
Pre-tax benefits and social insurance of directors and supervisors [line items]
Pension		¥ 1,511,000		¥ 1,521,000	¥ 1,470,000
Total		¥ 9,187,000		¥ 9,746,000	10,534,000
Option granted to the directors and supervisors | shares		0		0
Emolument as an inducement to join or upon joining the Company or as compensation for loss of office		¥ 0		¥ 0
Number of directors and supervisors waived or agreed to waive emoluments | employees		0		0
Directors and supervisors [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		¥ 490,000		¥ 610,000	662,000
Basic salaries		272,000		629,000	930,000
Performance salaries		930,000		1,023,000	1,805,000
Pension		247,000		299,000	410,000
Total		1,939,000		2,561,000	3,807,000
Name of director [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		442,000		514,000	548,000
Basic salaries		0		327,000	499,000
Performance salaries		0		396,000	1,157,000
Pension		0		122,000	254,000
Total		442,000		1,359,000	2,458,000
Mr. Cao Peixi [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		0		0	0
Basic salaries		0		0	0
Performance salaries		0		0	0
Pension		0		0	0
Total		0		0	0
Mr. Guo Junming [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		0	[1]	0	0
Basic salaries		0	[1]	0	0
Performance salaries		0	[1]	0	0
Pension		0	[1]	0	0
Total		0	[1]	0	0
Mr. Liu Guoyue [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		0		0	0
Basic salaries		0		0	143,000
Performance salaries		0		0	663,000
Pension		0		0	123,000
Total		0		0	929,000
Mr. Fan Xiaxia [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		0	[2]	0	0
Basic salaries		0	[2]	327,000	356,000
Performance salaries		0	[2]	396,000	494,000
Pension		0	[2]	122,000	131,000
Total		0	[2]	845,000	981,000
Mr. Li Shiqi [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		0	[3]	0	0
Basic salaries		0	[3]	0	0
Performance salaries		0	[3]	0	0
Pension		0	[3]	0	0
Total		0	[3]	0	0
Mr. Huang Jian [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		0		0	0
Basic salaries		0		0	0
Performance salaries		0		0	0
Pension		0		0	0
Total		0		0	0
Mr. Wang Yongxiang [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees	[4]	0
Basic salaries	[4]	0
Performance salaries	[4]	0
Pension	[4]	0
Total	[4]	0
Mr. Mi Dabin [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		24,000		48,000	65,000
Basic salaries		0		0	0
Performance salaries		0		0	0
Pension		0		0	0
Total		24,000		48,000	65,000
Mr. Guo Hongbo [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		0		0	12,000
Basic salaries		0		0	0
Performance salaries		0		0	0
Pension		0		0	0
Total		0		0	12,000
Mr. Zhu Yousheng [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		24,000	[3]	48,000	24,000
Basic salaries		0	[3]	0	0
Performance salaries		0	[3]	0	0
Pension		0	[3]	0	0
Total		24,000	[3]	48,000	24,000
Mr. Xu Zujian [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees					24,000
Basic salaries					0
Performance salaries					0
Pension					0
Total					24,000
Ms. Li Song [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		24,000	[3]	48,000	65,000
Basic salaries		0	[3]	0	0
Performance salaries		0	[3]	0	0
Pension		0	[3]	0	0
Total		24,000	[3]	48,000	65,000
Mr. Cheng Heng [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees	[4]	0
Basic salaries	[4]	0
Performance salaries	[4]	0
Pension	[4]	0
Total	[4]	0
Mr. Lin Chong [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees	[4]	0
Basic salaries	[4]	0
Performance salaries	[4]	0
Pension	[4]	0
Total	[4]	0
Mr. Li Zhensheng [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		37,000	[3]	74,000	74,000
Basic salaries		0	[3]	0	0
Performance salaries		0	[3]	0	0
Pension		0	[3]	0	0
Total		37,000	[3]	74,000	74,000
Mr. Qi Yudong [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees					6,000
Basic salaries					0
Performance salaries					0
Pension					0
Total					6,000
Mr. Zhang Shouwen [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees				37,000	74,000
Basic salaries				0	0
Performance salaries				0	0
Pension				0	0
Total				37,000	74,000
Mr. Yue Heng [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		74,000		74,000	100,000
Basic salaries		0		0	0
Performance salaries		0		0	0
Pension		0		0	0
Total		74,000		74,000	100,000
Ms. Zhang Lizi [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees					30,000
Basic salaries					0
Performance salaries					0
Pension					0
Total					30,000
Mr. Geng Jianxin [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		37,000	[3]	74,000	37,000
Basic salaries		0	[3]	0	0
Performance salaries		0	[3]	0	0
Pension		0	[3]	0	0
Total		37,000	[3]	74,000	37,000
Mr. Xia Qing [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		37,000	[3]	74,000	37,000
Basic salaries		0	[3]	0	0
Performance salaries		0	[3]	0	0
Pension		0	[3]	0	0
Total		37,000	[3]	74,000	37,000
Mr. Xu Mengzhou [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		74,000		37,000
Basic salaries		0		0
Performance salaries		0		0
Pension		0		0
Total		74,000		37,000
Mr. Liu Jizhen [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees	[4]	37,000
Basic salaries	[4]	0
Performance salaries	[4]	0
Pension	[4]	0
Total	[4]	37,000
Mr. Xu Haifeng [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees	[4]	37,000
Basic salaries	[4]	0
Performance salaries	[4]	0
Pension	[4]	0
Total	[4]	37,000
Mr. Zhang Xianzhi [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees	[4]	37,000
Basic salaries	[4]	0
Performance salaries	[4]	0
Pension	[4]	0
Total	[4]	37,000
Name of supervisor [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		48,000		96,000	114,000
Basic salaries		272,000		302,000	431,000
Performance salaries		930,000		627,000	648,000
Pension		247,000		177,000	156,000
Total		1,497,000		1,202,000	1,349,000
Mr. Ye Xiangdong [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		0		0	0
Basic salaries		0		0	0
Performance salaries		0		0	0
Pension		0		0	0
Total		0		0	0
Mr. Mu Xuan [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		24,000		48,000	65,000
Basic salaries		0		0	0
Performance salaries		0		0	0
Pension		0		0	0
Total		24,000		48,000	65,000
Ms. Zhang Mengjiao [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		0		0	0
Basic salaries		0		0	0
Performance salaries		0		0	0
Pension		0		0	0
Total		0		0	0
Mr. Gu Jianguo [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		24,000		48,000	49,000
Basic salaries		0		0	0
Performance salaries		0		0	0
Pension		0		0	0
Total		24,000		48,000	49,000
Mr. Wang Zhaobin [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees				0	0
Basic salaries				51,000	298,000
Performance salaries				0	385,000
Pension				0	103,000
Total				51,000	786,000
Ms. Zhang Ling [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees				0	0
Basic salaries				69,000	133,000
Performance salaries				0	263,000
Pension				0	53,000
Total				69,000	¥ 449,000
Ms. Zhang Xiaojun [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		0		0
Basic salaries		137,000		92,000
Performance salaries		466,000		314,000
Pension		124,000		89,000
Total		727,000		495,000
Mr. Zhu Daqing [member]
Pre-tax benefits and social insurance of directors and supervisors [line items]
Fees		0		0
Basic salaries		135,000		90,000
Performance salaries		464,000		313,000
Pension		123,000		88,000
Total		¥ 722,000		¥ 491,000

[1] Resigned on 9 October 2017.

[2] Resigned on 28 February 2018

[3] Resigned on 13 June 2017.

[4] Appointed on 13 June 2017.

XML

Directors', supervisors' and senior management's emoluments (Five highest paid individuals) (Detail) ¥ / employees in Thousands, ¥ in Thousands	12 Months Ended
	Dec. 31, 2017 CNY (¥) ¥ / employees employees	Dec. 31, 2016 CNY (¥) employees	Dec. 31, 2015 CNY (¥)
Five highest paid individuals [line items]
Pension	¥ 1,511	¥ 1,521	¥ 1,470
Total	¥ 9,187	¥ 9,746	10,534
Five highest paid individuals [member]
Five highest paid individuals [line items]
Number of directors | employees	0	1
Number of non-directors | employees	5	4
Basic salaries	¥ 1,524	¥ 1,213	910
Performance salaries	1,800	1,440	1,260
Pension	648	502	365
Total	¥ 3,972	¥ 3,155	¥ 2,535
Five highest paid individuals [member] | Bottom of range [member]
Five highest paid individuals [line items]
Emoluments payable to each person of five highest paid individuals | ¥ / employees	0
Five highest paid individuals [member] | Top of range [member]
Five highest paid individuals [line items]
Emoluments payable to each person of five highest paid individuals | ¥ / employees	790

XML

Commitments (Capital commitments) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Commitments [abstract]
Contracted but not provided	¥ 16,985,439	¥ 18,603,559

XML

Commitments (Operating lease commitments) (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Disclosure of operating lease commitments [line items]
Total future minimum lease payments under non-cancelable operating leases	¥ 1,486,784	¥ 1,430,409
Not later than one year [member]
Disclosure of operating lease commitments [line items]
Total future minimum lease payments under non-cancelable operating leases	196,870	181,441
Later than one year and not later than two years [member]
Disclosure of operating lease commitments [line items]
Total future minimum lease payments under non-cancelable operating leases	118,272	144,088
Later than two years and not later than five years [member]
Disclosure of operating lease commitments [line items]
Total future minimum lease payments under non-cancelable operating leases	143,628	133,984
Later than five years [member]
Disclosure of operating lease commitments [line items]
Total future minimum lease payments under non-cancelable operating leases	¥ 1,028,014	¥ 970,896

XML

Commitments (Operating lease commitments) (Narrative) (Detail) - Land operating lease agreement signed by Huaneng Dezhou Power Plant and Shandong Land Bureau [member] - CNY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of operating lease commitments [line items]
Duration of contracts	30-year
Increment for each rental revision of the previous annual rental amount	30.00%
Original annual rentals	¥ 30
Revised annual rentals	¥ 34	¥ 34

XML

Commitments (Fuel purchase commitments) (Detail)		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016
Government-related enterprise one, agreement one [member]
Disclosure on purchase commitments by suppliers [line items]
Periods		2018-2039	2017-2039
Purchase quantities	[1]	2.8 million m3/day	2.8 million m3/day
Estimated unit costs (RMB)		2.21/ m3	2.31/ m3
Government-related enterprise two, agreement one [member]
Disclosure on purchase commitments by suppliers [line items]
Periods		2018-2023	2017-2023
Purchase quantities	[1]	541 million m3/day	541 million m3/day
Estimated unit costs (RMB)		2.06/ m3	2.16/ m3
Government-related enterprise two, agreement two [member]
Disclosure on purchase commitments by suppliers [line items]
Periods		2018-2023	2017-2023
Purchase quantities	[1]	450 million m3/day	450 million m3/day
Estimated unit costs (RMB)		2.06/ m3	2.16/ m3
Government-related enterprise two, agreement three [member]
Disclosure on purchase commitments by suppliers [line items]
Periods		2018-2023
Purchase quantities	[1]	541 million m3/day
Estimated unit costs (RMB)		2.10/ m3
Government-related enterprise two, agreement four [member]
Disclosure on purchase commitments by suppliers [line items]
Periods		2018-2023
Purchase quantities	[1]	450 million m3/day
Estimated unit costs (RMB)		2.27/ m3
Government-related enterprise three, agreement one [member]
Disclosure on purchase commitments by suppliers [line items]
Periods		2018-2026
Purchase quantities	[1]	200 million m3/day
Estimated unit costs (RMB)		2.38/ m3
Other suppliers, agreement one [member]
Disclosure on purchase commitments by suppliers [line items]
Periods		2018-2019
Purchase quantities	[2]	243 BBtu/day
Estimated unit costs (RMB)		approximately 67,000/BBtu
Other suppliers, agreement two [member]
Disclosure on purchase commitments by suppliers [line items]
Periods		2020-2021
Purchase quantities	[2]	242 BBtu/day
Estimated unit costs (RMB)		approximately 67,000/BBtu
Other suppliers, agreement three [member]
Disclosure on purchase commitments by suppliers [line items]
Periods		2022
Purchase quantities	[2]	248 BBtu/day
Estimated unit costs (RMB)		approximately 67,000/BBtu
Other suppliers, agreement four [member]
Disclosure on purchase commitments by suppliers [line items]
Periods		2023	2023
Purchase quantities	[2]	247.5~256.6 BBtu/day	247.5~256.6 BBtu/day
Estimated unit costs (RMB)		approximately 67,000/BBtu	approximately 63,000/BBtu
Other suppliers, agreement five [member]
Disclosure on purchase commitments by suppliers [line items]
Periods		2024-2028	2024-2028
Purchase quantities	[2]	49.9~81.5 BBtu/day	49.9~59.0 BBtu/day
Estimated unit costs (RMB)		approximately 69,000/BBtu	approximately 70,000/BBtu
Other suppliers, agreement six [member]
Disclosure on purchase commitments by suppliers [line items]
Periods			2017-2022
Purchase quantities	[2]		248 BBtu/day
Estimated unit costs (RMB)			approximately 63,000/BBtu

[1] The quantities represent maximum volume, others represent minimum or forecasted volume if not specified.

[2] BBtu: Billion British Thermal Unit.

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Business combinations (Acquisition from Huaneng Group) (Narrative) (Detail) - CNY (¥)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of detailed information about business combination [line items]
Other receivables and assets recorded for contingent consideration	¥ 615,013,000	¥ 0
Other non-current assets recorded for contingent consideration	244,533,000	0
Acquisition from Huaneng Group [member]
Disclosure of detailed information about business combination [line items]
Revenue	31,207,000,000
Net loss	1,051,000,000
Goodwill expected to be deductible for tax purposes	0
Fair value of contingent consideration from Huaneng Group	860,000,000	¥ 0
Other receivables and assets recorded for contingent consideration	615,000,000
Other non-current assets recorded for contingent consideration	245,000,000
Acquisition related cost	¥ 26,000,000
Shandong Power [member]
Disclosure of detailed information about business combination [line items]
Equity interests acquired by the Company	80.00%
Jilin Power [member]
Disclosure of detailed information about business combination [line items]
Equity interests acquired by the Company	100.00%
Heilongjiang Power [member]
Disclosure of detailed information about business combination [line items]
Equity interests acquired by the Company	100.00%
Zhongyuan Gas [member]
Disclosure of detailed information about business combination [line items]
Equity interests acquired by the Company	90.00%

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Business combinations (Acquisition from Huaneng Group) (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of detailed information about business combination [line items]
Cash consideration paid for acquisition of subsidiaries, net of cash acquired	¥ 10,817,107	¥ (157,421)	¥ 8,887,882
Acquisition from Huaneng Group [member]
Disclosure of detailed information about business combination [line items]
Total consideration	15,500,770
Non-controlling interests	6,292,577
Less: Fair value of total identifiable net assets	19,316,748
Goodwill	3,167,566
Total consideration	15,500,770
Less: Net settlement of the receivables due from Huaneng Group	2,361,871
Bank balances and cash of acquirees	2,342,766
Less: Restricted cash	(20,974)
Cash consideration paid for acquisition of subsidiaries, net of cash acquired	10,817,107
A subsidiary of Shandong Power [member]
Disclosure of detailed information about business combination [line items]
Fair value of pre-existing interest in subsidiaries	¥ 690,967

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Business combinations (Acquisition from Huaneng Group) (Assets and liabilities arising from acquisitions) (Detail) ¥ in Thousands	Dec. 31, 2017 CNY (¥)
Shandong Power [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	¥ 16,319,629
Shandong Power [member] | Property, plant and equipment [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	41,366,757
Shandong Power [member] | Investment in associates and joint ventures [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	1,021,566
Shandong Power [member] | Available-for-sale financial assets [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	4,000
Shandong Power [member] | Land use rights [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	2,272,181
Shandong Power [member] | Deferred income tax assets [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	334,055
Shandong Power [member] | Other non-current assets [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	1,285,838
Shandong Power [member] | Bank balances and cash [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	1,621,276
Shandong Power [member] | Inventories [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	952,510
Shandong Power [member] | Trade receivables [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	2,509,641
Shandong Power [member] | Other receivables and other current assets [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	2,992,094
Shandong Power [member] | Long-term borrowings [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(15,647,367)
Shandong Power [member] | Deferred income tax liabilities [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(2,447,672)
Shandong Power [member] | Other non-current liabilities [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(1,688,306)
Shandong Power [member] | Short-term borrowings [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(8,082,200)
Shandong Power [member] | Tax payables [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(270,531)
Shandong Power [member] | Dividends payables [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(136,955)
Shandong Power [member] | Salary and welfare payables [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(41,667)
Shandong Power [member] | Payables and other liabilities [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(9,725,591)
Jilin Power [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	404,107
Jilin Power [member] | Property, plant and equipment [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	8,496,028
Jilin Power [member] | Investment in associates and joint ventures [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	0
Jilin Power [member] | Available-for-sale financial assets [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	100,895
Jilin Power [member] | Land use rights [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	228,173
Jilin Power [member] | Deferred income tax assets [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	323,522
Jilin Power [member] | Other non-current assets [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	213,589
Jilin Power [member] | Bank balances and cash [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	103,045
Jilin Power [member] | Inventories [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	89,333
Jilin Power [member] | Trade receivables [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	293,455
Jilin Power [member] | Other receivables and other current assets [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	2,393,835
Jilin Power [member] | Long-term borrowings [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(8,330,929)
Jilin Power [member] | Deferred income tax liabilities [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(214,642)
Jilin Power [member] | Other non-current liabilities [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(10,291)
Jilin Power [member] | Short-term borrowings [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(600,000)
Jilin Power [member] | Tax payables [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(10,311)
Jilin Power [member] | Dividends payables [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	0
Jilin Power [member] | Salary and welfare payables [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(2,969)
Jilin Power [member] | Payables and other liabilities [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(2,668,626)
Heilongjiang Power [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	2,570,630
Heilongjiang Power [member] | Property, plant and equipment [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	12,525,071
Heilongjiang Power [member] | Investment in associates and joint ventures [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	0
Heilongjiang Power [member] | Available-for-sale financial assets [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	0
Heilongjiang Power [member] | Land use rights [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	655,485
Heilongjiang Power [member] | Deferred income tax assets [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	10,404
Heilongjiang Power [member] | Other non-current assets [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	210,965
Heilongjiang Power [member] | Bank balances and cash [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	385,295
Heilongjiang Power [member] | Inventories [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	123,889
Heilongjiang Power [member] | Trade receivables [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	127,219
Heilongjiang Power [member] | Other receivables and other current assets [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	889,392
Heilongjiang Power [member] | Long-term borrowings [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(6,742,580)
Heilongjiang Power [member] | Deferred income tax liabilities [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(280,945)
Heilongjiang Power [member] | Other non-current liabilities [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(253,671)
Heilongjiang Power [member] | Short-term borrowings [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(1,920,000)
Heilongjiang Power [member] | Tax payables [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(54,302)
Heilongjiang Power [member] | Dividends payables [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	0
Heilongjiang Power [member] | Salary and welfare payables [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(22,462)
Heilongjiang Power [member] | Payables and other liabilities [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(3,083,130)
Zhongyuan Gas [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	22,382
Zhongyuan Gas [member] | Property, plant and equipment [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	1,381,060
Zhongyuan Gas [member] | Investment in associates and joint ventures [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	0
Zhongyuan Gas [member] | Available-for-sale financial assets [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	0
Zhongyuan Gas [member] | Land use rights [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	27,075
Zhongyuan Gas [member] | Deferred income tax assets [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	0
Zhongyuan Gas [member] | Other non-current assets [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	48
Zhongyuan Gas [member] | Bank balances and cash [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	222,939
Zhongyuan Gas [member] | Inventories [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	1,136
Zhongyuan Gas [member] | Trade receivables [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	124,636
Zhongyuan Gas [member] | Other receivables and other current assets [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	119,974
Zhongyuan Gas [member] | Long-term borrowings [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(1,200,000)
Zhongyuan Gas [member] | Deferred income tax liabilities [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(47,235)
Zhongyuan Gas [member] | Other non-current liabilities [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	0
Zhongyuan Gas [member] | Short-term borrowings [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	0
Zhongyuan Gas [member] | Tax payables [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(419)
Zhongyuan Gas [member] | Dividends payables [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	0
Zhongyuan Gas [member] | Salary and welfare payables [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	(717)
Zhongyuan Gas [member] | Payables and other liabilities [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	¥ (606,115)

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Business combinations (Subsidiary transferred from joint venture) (Detail) - Shanxi Xiaoyi Energy [member] ¥ in Thousands	12 Months Ended
	Dec. 31, 2017 CNY (¥)
Disclosure of detailed information about business combination [line items]
Equity interests held by non-controlling shareholder	49.00%
Non-controlling interests	¥ 10
Fair value of pre-existing interest in subsidiaries	10,200
Less: Fair value of total identifiable net assets	10,210
Goodwill	¥ 0

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Business combinations (Subsidiary transferred from joint venture) (Financial information) (Detail) - Shanxi Xiaoyi Energy [member] ¥ in Thousands	12 Months Ended
	Dec. 31, 2017 CNY (¥)
Disclosure of detailed information about business combination [line items]
Revenue	¥ 704
Net Profit	¥ 228

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Business combinations (Subsidiary transferred from joint venture) (Identifiable assets and liabilities of acquiree as at acquisition date) (Detail) - Shanxi Xiaoyi Energy [member] ¥ in Thousands	Dec. 31, 2017 CNY (¥)
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	¥ 10,210
Bank balances and cash [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	10,211
Accounts payable and other liabilities [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	¥ (1)

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Business combinations (Acquisition of Ruzhou Xuji Wind Power Generation Co., Ltd.) (Narrative) (Detail) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017 CNY (¥)
Huaneng Ruzhou Clean Energy Co., Ltd. ("Ruzhou Clean Energy") [member]
Disclosure of detailed information about business combination [line items]
Contribution committed by the Company for equity of subsidiaries	¥ 76,000
Percentage of interest held by the Company	95.00%	[1]
Proportion of ownership interests held by non-controlling interests	5.00%
Ruzhou Xuji Wind Power Generation [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	¥ 4,000

[1] These companies were newly established in 2017.

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Business combinations (Acquisition of Ruzhou Xuji Wind Power Generation Co., Ltd.) (Detail) - Ruzhou Xuji Wind Power Generation [member] ¥ in Thousands	Dec. 31, 2017 CNY (¥)
Disclosure of detailed information about business combination [line items]
Consideration	¥ 4,000
Less: Fair value of total identifiable net assets	4,000
Goodwill	¥ 0

XML

Business combinations (Acquisition of Ruzhou Xuji Wind Power Generation Co., Ltd.) (Financial information) (Detail) - Ruzhou Xuji Wind Power Generation [member] ¥ in Thousands	12 Months Ended
	Dec. 31, 2017 CNY (¥)
Disclosure of detailed information about business combination [line items]
Revenue	¥ 0
Net Profit	¥ 0

XML

Business combinations (Acquisition of Ruzhou Xuji Wind Power Generation Co., Ltd.) (Identifiable assets and liabilities of acquiree as at acquisition date) (Detail) - Ruzhou Xuji Wind Power Generation [member] ¥ in Thousands	Dec. 31, 2017 CNY (¥)
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	¥ 4,000
Other receivables and assets [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	16,080
Property, plant and equipment [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	11,893
Accounts payable and other liabilities [member]
Disclosure of detailed information about business combination [line items]
Total identifiable net assets, Fair Value	¥ (23,973)

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Non-controlling interests (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015
Disclosure of the information relating to each of the Company and subsidiaries that have material non-controlling interests [line items]
Non-current assets	¥ 348,051,801	¥ 277,873,123
Current assets	48,537,710	36,966,616
Non-current liabilities	(133,024,419)	(82,456,751)
Current liabilities	(155,950,488)	(130,196,251)
Carrying amount of NCI	19,973,038	16,183,742
Revenue	152,459,444	113,814,236	[1]	¥ 128,904,873	[1]
Net (loss) /profit	1,584,207	10,347,987		17,259,107
Total comprehensive (loss) /income	998,993	10,833,271		18,414,967
(Loss) /profit allocated to NCI	4,371	1,827,560		3,607,174
Other comprehensive (loss) /income allocated to NCI	(28,496)	484
Cash flow from operating activities	29,197,363	31,510,824		42,362,708
Cash flow from investment activities	(31,748,825)	(17,649,646)		(33,015,012)
Cash flow from financing activities	4,013,180	(13,601,850)		(14,140,659)
Net increase/ (decrease) in cash and cash equivalents	¥ 1,471,889	¥ 332,251		¥ (4,760,117)
Qinbei Power [member]
Disclosure of the information relating to each of the Company and subsidiaries that have material non-controlling interests [line items]
NCI percentage	40.00%	40.00%
Non-current assets	¥ 10,553,775	¥ 11,210,604
Current assets	1,738,000	1,472,192
Non-current liabilities	(3,053,535)	(2,206,586)
Current liabilities	(5,821,543)	(6,475,340)
Net assets	3,416,697	4,000,870
Carrying amount of NCI	1,380,594	1,614,264
Revenue	4,587,612	5,006,349
Net (loss) /profit	(169,261)	457,311
Total comprehensive (loss) /income	(169,261)	457,311
(Loss) /profit allocated to NCI	(67,704)	182,924
Other comprehensive (loss) /income allocated to NCI	0	0
Cash flow from operating activities	970,585	1,400,042
Cash flow from investment activities	(252,441)	(312,604)
Cash flow from financing activities	(613,010)	(1,247,836)
Net increase/ (decrease) in cash and cash equivalents	105,134	(160,398)
Dividends paid to NCI	¥ 150,000	¥ 433,090
Beijing Cogeneration [member]
Disclosure of the information relating to each of the Company and subsidiaries that have material non-controlling interests [line items]
NCI percentage	59.00%	59.00%
Non-current assets	¥ 6,841,918	¥ 5,821,110
Current assets	1,257,485	1,041,957
Non-current liabilities	(394,590)	(152,911)
Current liabilities	(2,501,516)	(1,665,750)
Net assets	5,203,297	5,044,406
Carrying amount of NCI	3,050,283	2,928,015
Revenue	4,262,547	4,476,729
Net (loss) /profit	541,602	788,899
Total comprehensive (loss) /income	541,602	788,899
(Loss) /profit allocated to NCI	319,545	465,450
Other comprehensive (loss) /income allocated to NCI	0	0
Cash flow from operating activities	1,071,888	973,352
Cash flow from investment activities	(1,190,093)	(540,151)
Cash flow from financing activities	70,299	(344,718)
Net increase/ (decrease) in cash and cash equivalents	(49,605)	88,518
Dividends paid to NCI	¥ 532,966	¥ 687,679
Luohuang Power [member]
Disclosure of the information relating to each of the Company and subsidiaries that have material non-controlling interests [line items]
NCI percentage	40.00%	40.00%
Non-current assets	¥ 4,055,507	¥ 3,966,880
Current assets	887,225	864,069
Non-current liabilities	(242,944)	(284,064)
Current liabilities	(2,064,897)	(1,601,236)
Net assets	2,634,891	2,945,649
Carrying amount of NCI	1,032,938	1,157,242
Revenue	2,303,079	2,436,586
Net (loss) /profit	(60,758)	122,508
Total comprehensive (loss) /income	(60,758)	122,508
(Loss) /profit allocated to NCI	(24,303)	49,003
Other comprehensive (loss) /income allocated to NCI	0	0
Cash flow from operating activities	195,282	550,346
Cash flow from investment activities	(383,004)	(189,599)
Cash flow from financing activities	156,483	(319,643)
Net increase/ (decrease) in cash and cash equivalents	(31,239)	41,104
Dividends paid to NCI	¥ 0	¥ 120,000
Weihai Power [member]
Disclosure of the information relating to each of the Company and subsidiaries that have material non-controlling interests [line items]
NCI percentage	40.00%	40.00%
Non-current assets	¥ 4,664,868	¥ 4,988,112
Current assets	633,012	508,493
Non-current liabilities	(81,048)	(104,952)
Current liabilities	(2,462,363)	(2,504,410)
Net assets	2,754,469	2,887,243
Carrying amount of NCI	1,101,787	1,154,897
Revenue	3,421,115	3,217,209
Net (loss) /profit	324,335	507,900
Total comprehensive (loss) /income	324,335	507,900
(Loss) /profit allocated to NCI	129,734	203,160
Other comprehensive (loss) /income allocated to NCI	0	0
Cash flow from operating activities	681,568	1,045,828
Cash flow from investment activities	(231,142)	(273,117)
Cash flow from financing activities	(405,196)	(786,471)
Net increase/ (decrease) in cash and cash equivalents	45,230	(13,760)
Dividends paid to NCI	¥ 160,000	¥ 366,983
Jinling Power [member]
Disclosure of the information relating to each of the Company and subsidiaries that have material non-controlling interests [line items]
NCI percentage	40.00%	40.00%
Non-current assets	¥ 5,049,079	¥ 5,426,759
Current assets	494,312	649,446
Non-current liabilities	(1,541,444)	(1,773,332)
Current liabilities	(1,854,441)	(1,835,090)
Net assets	2,147,506	2,467,783
Carrying amount of NCI	859,024	987,135
Revenue	3,423,688	3,734,108
Net (loss) /profit	269,949	655,568
Total comprehensive (loss) /income	269,949	655,568
(Loss) /profit allocated to NCI	107,980	262,227
Other comprehensive (loss) /income allocated to NCI	0	0
Cash flow from operating activities	731,714	1,293,565
Cash flow from investment activities	(47,518)	(37,274)
Cash flow from financing activities	(680,226)	(1,255,955)
Net increase/ (decrease) in cash and cash equivalents	3,970	336
Dividends paid to NCI	¥ 179,023	¥ 308,923
Yueyang Power [member]
Disclosure of the information relating to each of the Company and subsidiaries that have material non-controlling interests [line items]
NCI percentage	45.00%	45.00%
Non-current assets	¥ 4,875,004	¥ 4,958,325
Current assets	987,812	826,089
Non-current liabilities	(1,042,093)	(1,150,021)
Current liabilities	(2,590,470)	(1,828,581)
Net assets	2,230,253	2,805,812
Carrying amount of NCI	1,019,016	1,260,591
Revenue	3,149,190	2,716,817
Net (loss) /profit	47,224	243,913
Total comprehensive (loss) /income	47,224	243,913
(Loss) /profit allocated to NCI	21,251	109,761
Other comprehensive (loss) /income allocated to NCI	0	0
Cash flow from operating activities	426,437	568,379
Cash flow from investment activities	(242,288)	(62,622)
Cash flow from financing activities	(191,231)	(521,249)
Net increase/ (decrease) in cash and cash equivalents	(7,082)	(15,492)
Dividends paid to NCI	¥ 65,675	¥ 0
Shidongkou Power [member]
Disclosure of the information relating to each of the Company and subsidiaries that have material non-controlling interests [line items]
NCI percentage	50.00%	50.00%
Non-current assets	¥ 3,712,623	¥ 3,917,340
Current assets	494,073	380,641
Non-current liabilities	(731,640)	(1,055,640)
Current liabilities	(1,919,701)	(1,584,142)
Net assets	1,555,355	1,658,199
Carrying amount of NCI	777,678	829,099
Revenue	2,117,052	1,915,915
Net (loss) /profit	164,557	297,211
Total comprehensive (loss) /income	164,557	297,211
(Loss) /profit allocated to NCI	82,278	148,606
Other comprehensive (loss) /income allocated to NCI	0	0
Cash flow from operating activities	311,668	890,615
Cash flow from investment activities	(93,434)	(258,892)
Cash flow from financing activities	(384,317)	(462,075)
Net increase/ (decrease) in cash and cash equivalents	(166,083)	169,648
Dividends paid to NCI	¥ 133,700	¥ 273,900
Yangliuqing Cogeneration [member]
Disclosure of the information relating to each of the Company and subsidiaries that have material non-controlling interests [line items]
NCI percentage	45.00%	45.00%
Non-current assets	¥ 2,541,803	¥ 2,654,085
Current assets	497,441	563,023
Non-current liabilities	(205,205)	(224,373)
Current liabilities	(869,071)	(991,614)
Net assets	1,964,968	2,001,121
Carrying amount of NCI	883,340	899,609
Revenue	2,010,872	1,773,869
Net (loss) /profit	121,853	177,447
Total comprehensive (loss) /income	121,853	177,447
(Loss) /profit allocated to NCI	54,834	79,851
Other comprehensive (loss) /income allocated to NCI	0	0
Cash flow from operating activities	334,842	295,547
Cash flow from investment activities	(64,179)	(197,600)
Cash flow from financing activities	(288,299)	(58,293)
Net increase/ (decrease) in cash and cash equivalents	(17,586)	39,616
Dividends paid to NCI	¥ 71,103	128,857
Shandong Power [member]
Disclosure of the information relating to each of the Company and subsidiaries that have material non-controlling interests [line items]
NCI percentage	20.00%
Non-current assets	¥ 47,665,952
Current assets	6,891,086
Non-current liabilities	(19,681,891)
Current liabilities	(18,695,005)
Net assets	16,180,142
Carrying amount of NCI	4,697,283
Revenue	22,566,737
Net (loss) /profit	(800,622)
Total comprehensive (loss) /income	(943,860)
(Loss) /profit allocated to NCI	(287,923)
Other comprehensive (loss) /income allocated to NCI	(28,648)
Cash flow from operating activities	3,848,712
Cash flow from investment activities	(3,967,060)
Cash flow from financing activities	(282,625)
Net increase/ (decrease) in cash and cash equivalents	(402,950)
Dividends paid to NCI	220,321
Other individually immaterial subsidiaries [member]
Disclosure of the information relating to each of the Company and subsidiaries that have material non-controlling interests [line items]
Carrying amount of NCI	5,171,095	5,352,890
(Loss) /profit allocated to NCI	(331,321)	326,578
Other comprehensive (loss) /income allocated to NCI	¥ 152	¥ 484

[1] Restated. The Company completed the acquisition of equity interests of four companies from Huaneng Group, see Note 40 for details. As the acquisition is a business combination under common control, the transaction is accounted for under merger accounting method under PRC GAAP. The assets and liabilities acquired in business combinations are measured at the carrying amounts of the acquirees in the consolidated financial statements of the ultimate controlling party on the acquisition date. The operating results for all periods presented are retrospectively restated as if the current structure and operations resulting from the acquisition had been in existence from the date when the acquirees first became under the control of the same ultimate controlling party. Therefore the relevant comparative figures in the segment information were restated under PRC GAAP while the acquisition is accounted for using acquisition method under IFRS.

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Subsequent events (Guarantee agreement) (Detail) $ in Millions	Dec. 31, 2017 USD ($)
Industrial and Commercial Bank of China Limited [member]
Disclosure of non-adjusting events after reporting period [line items]
Amount of guarantee for short-term loans	$ 100

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Subsequent events (Super short-term bonds) (Detail) - Issue super short-term bonds [member] ¥ / shares in Units, ¥ in Billions	1 Months Ended
	Feb. 28, 2018 CNY (¥) ¥ / shares
Super short-term bond with maturity of 90 days issued in February 2018 [member]
Disclosure of non-adjusting events after reporting period [line items]
Face value | ¥	¥ 4
Annual interest rate	4.35%
Maturity	90 days
Par value | ¥ / shares	¥ 100
Super short-term bond with maturity of 90 days issued in March 2018 [member]
Disclosure of non-adjusting events after reporting period [line items]
Face value | ¥	¥ 2
Annual interest rate	4.35%
Maturity	90 days
Par value | ¥ / shares	¥ 100