20-F/A

As filed with the Securities and Exchange Commission on May 30, 2018

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 20-F/A

Amendment no. 1

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2017

Commission file number: 001-14668

COMPANHIA PARANAENSE DE ENERGIA – COPEL

(Exact Name of Registrant as Specified in its Charter)

Energy Company of Paraná (Translation of Registrant’s Name into English) The Federative Republic of Brazil (Jurisdiction of Incorporation or Organization)

Rua Coronel Dulcídio, 800

80420-170 Curitiba, Paraná, Brazil

(Address of Principal Executive Offices)

Jonel Nazareno Iurk

+55 41 3222 2027 – ri@copel.com

Rua Coronel Dulcídio, 800, 3rd floor – 80420.170 Curitiba, Paraná, Brazil

(Name, telephone, e-mail 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
Preferred Class B Shares, without par value*	New York Stock Exchange
American Depositary Shares (as evidenced by American Depositary Receipts), each representing one Preferred Class B Share	New York Stock Exchange

* Not for trading, but only in connection with the listing of American Depositary Shares on the New York Stock Exchange.

Securities registered or to be registered pursuant to Section 12(g) of the Act: None

Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act: None

Indicate the number of outstanding shares of each of the Issuer’s classes of capital or common stock as of December 31, 2017:

145,031,080 Common Shares, without par value

328,627 Class A Preferred Shares, without par value

128,295,668 Class B Preferred Shares, without par value

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

Yes x   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 x

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 x   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).

N/A

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 Securities Exchange Act of 1934. (Check one):

Large accelerated filer x   Accelerated filer ¨

Non-accelerated filer ¨   Emerging growth 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. ¨

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

U.S. GAAP   ¨                                             IFRS               x                                            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.

N/A

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 Securities Exchange Act of 1934).

Yes ¨  No x

EXPLANATORY NOTE

Companhia Paranaense de Energia – Copel (“Copel”) is filing this Amendment No. 1 (the “Form 20-F/A”) to its Annual Report on Form 20-F for the fiscal year ended December 31, 2017 (the “Form 20-F”) to submit the Interactive Data File (as defined in Rule 11 of Regulation S-T) with respect to the audited consolidated financial statements of Copel as Exhibit 101 to the Form 20-F in accordance with Rule 405 of Regulation S-T. Exhibit 101 was omitted from the Form 20-F as originally filed with the Securities and Exchange Commission on May 15, 2018, pursuant to the 30-day grace period provided under Rule 405(a)(2)(ii) of Regulation S-T.

Except as set forth above, this Form 20-F/A does not modify or update any of the disclosures in the Form 20-F. This Form 20-F/A speaks as of the time of filing of the Form 20-F, does not reflect events that may have occurred subsequent to such filing, and does not modify or update in any way disclosures made in the Form 20-F.

Item 19. Exhibits

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 Label Linkbase Document
101.PRE*	XBRL Taxonomy Extension Presentation Linkbase Document

* In accordance with Rule 402 of Regulation S-T, the information in these exhibits shall not be deemed to be “filed” for purposes of Section 18 of the Exchange Act, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Signatures

The registrant hereby certifies that it meets all of the requirements for filing on Form 20-F and that it has duly caused and authorized the undersigned to sign this annual report on its behalf.

Companhia Paranaense De Energia – Copel

By:/s/Jonel Nazareno Iurk                 

Name: Jonel Nazareno Iurk

Title: Chief Executive Officer

By: /s/ Adriano Rudek de Moura                     

Name: Adriano Rudek de Moura

Title: Chief Financial and Investor Relations Officer

Date: May 30, 2018

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Document and Entity Information	12 Months Ended
	Dec. 31, 2017 shares
Statement Line Items [Line Items]
Entity Registrant Name	ENERGY CO OF PARANA
Entity Central Index Key	0001041792
Document Type	20-F
Document Period End Date	Dec. 31, 2017
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Is Entity a Well-known Seasoned Issuer?	No
Is Entity a Voluntary Filer?	No
Is Entity's Reporting Status Current?	No
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding	145,031,080,000
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2017
Class "A" Preferred
Statement Line Items [Line Items]
Entity Preferred Stock, Shares Outstanding	328,627,000
Class "B" Preferred
Statement Line Items [Line Items]
Entity Preferred Stock, Shares Outstanding	128,295,668,000

XML

Consolidated Statements of Financial Position - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
CURRENT ASSETS
Cash and cash equivalents	R$ 1,040,075	R$ 982,073	R$ 1,480,727
Bonds and securities	1,341	136,649	294,514
Collaterals and escrow accounts	59,372	1,294	2,000
Trade accounts receivable	2,733,240	2,217,355	3,032,827
Dividends receivable	80,815	71,758	40,345
CRC transferred to the State Government of Paraná	167,109	0	111,663
Sectorial financial assets	171,609	0	910,759
Accounts receivable related to the concession	149,744	65,595	9,162
Other current receivables	409,351	306,933	474,889
Inventories	110,559	130,637	131,018
Income tax and social contribution	501,685	188,952	194,244
Other current recoverable taxes	198,232	67,931	70,725
Prepaid expenses	39,867	39,096	49,282
Receivable from related parties	38,835	28,968	19,482
Total current assets	5,701,834	4,237,241	6,821,637
NONCURRENT ASSETS
Bonds and securities	218,322	195,096	91,117
Other temporary investments	18,727	408,297	0
Collaterals and escrow accounts	75,665	73,074	86,137
Trade accounts receivable	261,082	270,786	75,062
CRC transferred to the State Government of Paraná	1,349,253	1,522,735	1,271,579
Judicial deposits	582,529	657,603	719,927
Sectorial financial assets	171,609	0	134,903
Accounts receivable related to the concession	4,360,378	3,748,335	1,358,451
Accounts receivable related to the concession compensation	68,859	67,401	219,556
Other noncurrent receivables	149,416	73,551	31,614
Income tax and social contribution	176,480	169,967	94,686
Deferred income tax and social contribution	915,492	814,355	537,562
Other noncurrent recoverable taxes	116,974	131,108	112,902
Prepaid expenses	12,684	25,583	25,493
Related parties	130,156	155,141	192,803
Subtotal	8,607,626	8,313,032	4,951,792
Investments	2,570,643	2,344,512	2,232,484
Property, Plant and Equipment	9,829,450	8,934,303	8,692,682
Intangible Assets	6,452,824	6,459,812	6,145,076
Total noncurrent assets	27,460,543	26,051,659	22,022,034
TOTAL ASSETS	33,162,377	30,288,900	28,843,671
CURRENT LIABILITIES
Payroll, social charges and accruals	313,967	287,797	258,401
Suppliers	1,683,577	1,255,639	1,613,126
Income tax and social contribution payable	86,310	41,454	311,916
Other taxes due	345,487	294,994	340,948
Loans and financing	784,666	1,470,742	308,558
Debentures	1,632,062	1,131,198	924,005
Dividend payable	288,981	266,831	346,007
Post-employment benefits	53,225	47,894	43,323
Customer charges due	150,025	141,712	277,458
Research and Development and Energy Efficiency	282,766	231,513	167,881
Accounts payable related to concession	62,624	66,210	61,786
Sectorial financial liabilities	192,819	155,261	0
Other accounts payable	121,405	264,791	135,709
Provisions for legal claims	112,000	0	0
Total current liabilities	6,109,914	5,656,036	4,789,118
NONCURRENT LIABILITIES
Suppliers	43,469	36,711	5,923
Deferred income tax and social contribution	156,630	178,430	214
Other taxes due	809,576	303,146	257,273
Loans and financing	2,974,839	2,575,551	3,768,502
Debentures	4,438,916	3,659,611	2,759,923
Post-employment benefits	812,878	721,971	551,337
Research and Development and Energy Efficiency	249,709	252,376	231,112
Accounts payable related to concession	492,330	499,332	473,879
Sectorial financial liabilities	90,700	123,731	0
Other accounts payable	72,849	30,525	30,962
Provisions for legal claims	1,400,064	1,273,338	1,494,936
Total noncurrent liabilities	11,541,960	9,654,722	9,574,061
EQUITY
Capital	7,910,000	7,910,000	6,910,000
Equity valuation adjustments	895,601	998,466	1,177,372
Legal reserve	844,398	792,716	744,784
Profit retention reserve	5,557,843	5,016,916	5,330,383
Total equity	15,207,842	14,718,098	14,162,539
Attributable to non-controlling interest	302,661	260,044	317,953
TOTAL EQUITY	15,510,503	14,978,142	14,480,492
TOTAL LIABILITIES & EQUITY	R$ 33,162,377	R$ 30,288,900	R$ 28,843,671

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Consolidated Statements of Income - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Earnings per share [line items]
NET OPERATING REVENUE	R$ 14,024,573	R$ 13,101,753	R$ 14,945,844
OPERATING COSTS	(10,665,890)	(10,234,115)	(11,799,316)
GROSS PROFIT	3,358,683	2,867,638	3,146,528
Operational expenses / income
Selling expenses	(169,050)	(250,448)	(283,397)
General and administrative expenses	(685,675)	(741,145)	(670,606)
Other operational income (expenses)	(464,316)	(53,638)	(158,619)
Equity in earnings of investees	101,739	166,411	87,590
Total operational expenses / income	(1,217,302)	(878,820)	(1,025,032)
PROFIT BEFORE FINANCIAL RESULTS AND TAXES	2,141,381	1,988,818	2,121,496
Financial income	699,310	903,936	769,627
Financial expenses	(1,447,750)	(1,498,592)	(1,197,329)
Total financial results	(748,440)	(594,656)	(427,702)
OPERATING PROFIT	1,392,941	1,394,162	1,693,794
INCOME TAX AND SOCIAL CONTRIBUTION, Current	(379,943)	(589,322)	(698,023)
INCOME TAX AND SOCIAL CONTRIBUTION, Deferred	105,257	69,632	165,794
INCOME TAX AND SOCIAL CONTRIBUTION	(274,686)	(519,690)	(532,229)
NET INCOME	1,118,255	874,472	1,161,565
Attributed to controlling shareholders	1,033,626	895,772	1,109,549
Attributed to non-controlling interest	R$ 84,629	R$ (21,300)	R$ 52,016
BASIC AND DILUTED NET EARNING PER SHARE ATTRIBUTED TO PARENT COMPANY SHAREHOLDERS - EXPRESSED IN BRAZILIAN REAIS
Ordinary shares	R$ 3.60754	R$ 3.12641	R$ 3.87253
Class "A" Preferred
BASIC AND DILUTED NET EARNING PER SHARE ATTRIBUTED TO PARENT COMPANY SHAREHOLDERS - EXPRESSED IN BRAZILIAN REAIS
Ordinary shares	3.96830	3.43906	4.25990
Class "B" Preferred
BASIC AND DILUTED NET EARNING PER SHARE ATTRIBUTED TO PARENT COMPANY SHAREHOLDERS - EXPRESSED IN BRAZILIAN REAIS
Ordinary shares	R$ 3.96830	R$ 3.43906	R$ 4.25979

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Consolidated Statements of Comprehensive Income - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statement of comprehensive income [abstract]
NET INCOME	R$ 1,118,255	R$ 874,472	R$ 1,161,565
Items that will never be reclassified to profit or loss
Gain (losses) on post employment benefits	(46,506)	(88,906)	410,330
Gain (losses) on post employment benefits - equity	0	(852)	19,660
Gain (losses) on taxes on other comprehensive income	16,827	30,174	(139,059)
Items that are or maybe reclassified to profit or loss
Adjustments related to financial assets classified as available for sale	26,138	3,612	628
Taxes on other comprehensive income	(8,888)	(1,229)	(215)
Realization - gain on financial assets, net of taxes	(18,909)	0	0
Total comprehensive income, net of taxes	(31,338)	(57,201)	291,344
TOTAL COMPREHENSIVE INCOME	1,086,917	817,271	1,452,909
Attributed to controlling shareholders	1,002,411	838,506	1,400,398
Attributed to non-controlling interest	R$ 84,506	R$ (21,235)	R$ 52,511

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Consolidated Statements of Changes in Equity - BRL (R$) R$ in Thousands	Capital	Equity Valuation Adjustments: Deemed Cost	Equity Valuation Adjustments: Other Comprehensive Income	Profit Reserves: Legal Reserve	Profit Reserves: Profit Retention Reserve	Profit Reserves: Additional Proposed Dividends	Profit Reserves: Accumulated Profit	Shareholders' Equity	Attributable to Non-Controlling Interests	Total
Balance, beginning at Dec. 31, 2014	R$ 6,910,000	R$ 1,137,104	R$ (160,140)	R$ 685,147	R$ 4,516,825	R$ 241,753	R$ 0	R$ 13,330,689	R$ 352,091	R$ 13,682,780
Net income (loss)							1,109,549	1,109,549	52,016	1,161,565
Other comprehensive income: Gain on financial assets, net of taxes			413					413	0	413
Other comprehensive income: actuarial gain (losses), net of taxes			290,436					290,436	495	290,931
Realization - gain on financial assets, net of taxes										0
Total comprehensive income			290,849				1,109,549	1,400,398	52,511	1,452,909
Realization - deemed cost, net of taxes		(90,441)					90,441	0	0	0
Deliberation of additional dividends proposed						(241,753)		(241,753)	(8,733)	(250,486)
Distribution of dividends with retained earnings								0	(48,601)	(48,601)
Allocation proposed to GSM: Legal reserve				59,637			(59,637)	0	0	0
Allocation proposed to GSM: Interest on own capital							(198,000)	(198,000)	0	(198,000)
Allocation proposed to GSM: Dividends							(128,795)	(128,795)	(29,315)	(158,110)
Allocation proposed to GSM: Profit retention reserve					813,558		(813,558)	0	0	0
Balance, ending at Dec. 31, 2015	6,910,000	1,046,663	130,709	744,784	5,330,383	0	0	14,162,539	317,953	14,480,492
Net income (loss)							895,772	895,772	(21,300)	874,472
Other comprehensive income: Gain on financial assets, net of taxes			2,383					2,383	0	2,383
Other comprehensive income: actuarial gain (losses), net of taxes			(59,649)					(59,649)	65	(59,584)
Realization - gain on financial assets, net of taxes										0
Total comprehensive income			(57,266)				895,772	838,506	(21,235)	817,271
Realization - deemed cost, net of taxes		(101,707)					101,707	0	0	0
Realization - actuarial gain			(19,933)		19,933			0	0	0
Deliberation of additional dividends proposed								0	(23,072)	(23,072)
Distribution of dividends with retained earnings								0	(9,342)	(9,342)
Capital increase	1,000,000				(1,000,000)			0	0	0
Allocation proposed to GSM: Legal reserve				47,932			(47,932)	0	0	0
Allocation proposed to GSM: Interest on own capital							(282,947)	(282,947)	0	(282,947)
Allocation proposed to GSM: Dividends								0	(4,260)	(4,260)
Allocation proposed to GSM: Profit retention reserve					666,600		(666,600)	0	0	0
Balance, ending at Dec. 31, 2016	7,910,000	944,956	53,510	792,716	5,016,916	0	0	14,718,098	260,044	14,978,142
Net income (loss)							1,033,626	1,033,626	84,629	1,118,255
Other comprehensive income: Gain on financial assets, net of taxes			17,250					17,250	0	17,250
Other comprehensive income: actuarial gain (losses), net of taxes			(29,556)					(29,556)	(123)	(29,679)
Realization - gain on financial assets, net of taxes			(18,909)					(18,909)	0	(18,909)
Total comprehensive income			(31,215)				1,033,626	1,002,411	84,506	1,086,917
Realization - deemed cost, net of taxes		(71,650)					71,650	0	0	0
Deliberation of additional dividends proposed								0	(11,053)	(11,053)
Approval of additional dividends in accordance with the 62nd Annual General Meeting					(223,266)			(223,266)	0	(223,266)
Allocation proposed to GSM: Legal reserve				51,682			(51,682)	0	0	0
Allocation proposed to GSM: Interest on own capital							(266,000)	(266,000)	0	(266,000)
Allocation proposed to GSM: Dividends							(23,401)	(23,401)	(30,836)	(54,237)
Allocation proposed to GSM: Profit retention reserve					764,193		(764,193)	0	0	0
Balance, ending at Dec. 31, 2017	R$ 7,910,000	R$ 873,306	R$ 22,295	R$ 844,398	R$ 5,557,843	R$ 0	R$ 0	R$ 15,207,842	R$ 302,661	R$ 15,510,503

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Consolidated Statements of Cash Flows - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
CASH FLOWS FROM OPERATIONAL ACTIVITIES
NET INCOME	R$ 1,118,255	R$ 874,472	R$ 1,161,565
Adjustments to reconcile net income for the period with cash generated from operating activities
Unrealized monetary and cambial variation and debt charges - net	900,610	1,171,228	716,228
Interest - bonus from the grant of concession agreements under the quota system	(82,160)	(96,783)	0
Gain on transmission concession agreement	(129,769)	(98,780)	(110,893)
Reversal of estimated losses on transmission concession agreement	0	(29,025)	0
Gain on remeasurement of the cash flow from the RBSE assets	(361,156)	(809,639)	0
Result of the adoption of the Special Tax Regularization Program	(154,197)	0	0
Income tax and social contribution	379,943	589,322	698,023
Deferred income tax and social contribution	(105,257)	(69,632)	(165,794)
Equity in earnings of investees	(101,739)	(166,411)	(87,590)
Result of renegotiation of hydrological risk - GSF	0	(26,872)	(134,620)
Appropriation of acturial calculation of post-employment benefits	97,511	130,707	143,202
Appropriation of pension and healthcare contributions	153,069	142,735	133,428
Creation for research and development and energy efficiency programs	118,753	101,946	128,898
Recognition of fair value of accounts receivable related to concession	(57,080)	(132,741)	(217,713)
Sectorial financial assets and liabilities result	(767,040)	1,079,662	(858,170)
Depreciation and amortization	731,599	708,296	676,472
Net operating estimated losses, provisions and reversals	365,539	768,696	210,829
Result from the change of the investment valuation method	0	(52,107)	0
Result of disposal of investment	(28,650)	0	0
Impairment of accounts receivable related to concession	17	54	40,757
Loss on disposal of property, plant and equipment	64,508	27,316	41,715
Loss on disposal of intangible assets	42,740	47,434	30,026
Total	2,185,496	4,159,878	2,406,363
Decrease (increase) in assets
Trade accounts receivable	(322,814)	578,116	(1,022,952)
Dividends and interest on own capital received	44,334	154,877	62,070
CRC transferred to the Government of the State of Paraná	97,085	49,425	178,588
Judicial deposits	96,028	62,324	16,326
Sectorial financial assets	0	258,779	975,053
Accounts receivable related to the concession extension	0	0	321,409
Other receivables	(44,193)	15,244	(16,238)
Inventories	20,078	381	19,604
Income tax and social contribution	146,602	(69,989)	(55,241)
Other current taxes recoverable	87,884	(25,608)	49,229
Prepaid expenses	12,128	10,096	(5,814)
Related Parties	(667)	0	(49,911)
Total decrease (increase) in assets	136,465	1,033,645	472,123
Increase (decrease) in liabilities
Payroll, social charges and accruals	26,170	29,396	5,783
Suppliers	275,370	(666,864)	(173,809)
Other taxes	24,795	(62,239)	144,711
Post-employment benefits	(200,848)	(187,143)	(170,258)
Customer charges due	8,313	(135,746)	254,225
Research and development and energy efficiency	(104,512)	(58,831)	(99,729)
Payable related to the concession	(65,871)	(648,593)	(55,346)
Sectorial financial liabilities	419,220	0	0
Other accounts payable	(101,062)	(23,605)	8,377
Provisions for legal claims	(124,395)	(193,197)	(163,684)
Total increase (decrease) in liabilities	157,180	(1,946,822)	(249,730)
CASH GENERATED BY OPERATING ACTIVITIES	2,479,141	3,246,701	2,628,756
Income tax and social contribution paid	(335,087)	(859,784)	(488,289)
Loans and financing - interest due and paid	(532,033)	(362,128)	(452,924)
Debentures - interest due and paid	(622,815)	(547,971)	(366,815)
NET CASH GENERATED FROM OPERATING ACTIVITIES	989,206	1,476,818	1,320,728
CASH FLOWS FROM INVESTMENT ACTIVITIES
Financial investments	48,512	13,664	76,883
Loans and financing granted to related parties	(5,145)	(9,422)	(29,400)
Receipt of loans and financing granted to related parties	24,985	5,112	7,805
Disposal of investments	484,608	0	0
Additions in investments	(248,243)	(505,098)	(528,629)
Capital reduction of investees	0	74,983	0
Additions to property, plant and equipment	(1,205,508)	(1,284,436)	(752,529)
Customers contributions - property, plant and equipment	0	40	0
Additions to intangible assets	(806,240)	(928,727)	(968,802)
Customers contributions - intangible assets	125,858	122,809	243,054
NET CASH USED IN INVESTING ACTIVITIES	(1,581,173)	(2,511,075)	(1,951,618)
CASH FLOWS FROM FINANCING ACTIVITIES
Loans and financing obtained from third parties	800,044	93,806	1,836,190
Issue of Debentures	2,242,521	1,822,965	1,168,633
Payments of principal - loans and financing	(971,187)	(226,973)	(1,170,987)
Payments of principal - debentures	(915,005)	(785,239)	(154,822)
Dividends and interest on own capital paid	(506,404)	(368,956)	(307,528)
NET CASH (USED IN) GENERATED FROM FINANCING ACTIVITIES	649,969	535,603	1,371,486
TOTAL EFFECTS ON CASH AND CASH EQUIVALENTS	58,002	(498,654)	740,596
Cash and cash equivalents at the beginning of the period	982,073	1,480,727	740,131
Cash and cash equivalents at the end of the period	1,040,075	982,073	1,480,727
CHANGE IN CASH AND CASH EQUIVALENTS	R$ 58,002	R$ (498,654)	R$ 740,596

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1. Operations

12 Months Ended

Dec. 31, 2017

Operations

Operations

Companhia Paranaense de Energia (Copel, Company or Parent Company), with its headquarters at Rua Coronel Dulcídio, 800, Curitiba - State of Paraná, is a publicly-held mixed capital company controlled by the State of Paraná and its shares are traded on Corporate Governance Level 1 of the Special Segments Listing of B3 S.A. - Brasil, Bolsa Balcão and also on the New York Stock Exchange (NYSE) and on the Madrid Stock Exchange in the Latin American segment (Latibex).

The core activities of Copel and its subsidiaries, regulated by the Brazilian Electricity Regulatory Agency (Aneel), linked to the Ministry of Mines and Energy (MME), is to research, study, plan, build and explore the production, transformation, distribution and trading of energy in any of its forms, primarily electricity. Furthermore, Copel participates in consortiums and in private sector and mixed-capital companies for the purpose of engaging in activities, primarily in the fields of energy, telecommunications, and natural gas.

1.1      Copel’s equity interests

Copel has direct and indirect interests in subsidiaries (1.1.1), joint ventures (1.1.2), associates (1.1.3) and joint operations (1.1.4). 

1.1.1       Subsidiaries

			Interest
Subsidiaries	Headquarters	Main activities	%	Investor
Copel Geração e Transmissão S.A. (Copel GeT)	Curitiba/PR	Production and transmission of electricity	100.0	Copel
Copel Distribuição S.A. (Copel DIS)	Curitiba/PR	Distribution and marketing of electricity	100.0	Copel
Copel Telecomunicações S.A. (Copel TEL)	Curitiba/PR	Telecommunication and communication	100.0	Copel
Copel Renováveis S.A. (Copel REN) (a)	Curitiba/PR	Control and management of interests	100.0	Copel
Copel Comercialização S.A. (Copel Energia)	Curitiba/PR	Commercialization of electricity	100.0	Copel
Companhia Paranaense de Gás - Compagás	Curitiba/PR	Distribution of pipeline gas	51.0	Copel
Elejor - Centrais Elétricas do Rio Jordão S.A.	Curitiba/PR	Production of electricity	70.0	Copel
Araucária Ltda (UEG)	Curitiba/PR	Production of electricity from natural gas	20.0	Copel
			60.0	Copel GeT
São Bento Energia, Investimentos e Participações S.A. (São Bento)	Curitiba/PR	Control and management of interests	100.0	Copel GeT
Nova Asa Branca I Energias Renováveis S.A.	S. Miguel do Gostoso/RN	Production of electricity from wind sources	100.0	Copel GeT
Nova Asa Branca II Energias Renováveis S.A.	Parazinho/RN	Production of electricity from wind sources	100.0	Copel GeT
Nova Asa Branca III Energias Renováveis S.A.	Parazinho/RN	Production of electricity from wind sources	100.0	Copel GeT
Nova Eurus IV Energias Renováveis S.A.	Touros/RN	Production of electricity from wind sources	100.0	Copel GeT
Santa Maria Energias Renováveis S.A.	Maracanaú/CE	Production of electricity from wind sources	100.0	Copel GeT
Santa Helena Energias Renováveis S.A.	Maracanaú/CE	Production of electricity from wind sources	100.0	Copel GeT
Ventos de Santo Uriel S.A.	João Câmara/RN	Production of electricity from wind sources	100.0	Copel GeT
Cutia Empreendimentos Eólicos S.A. (Cutia)	Curitiba/PR	Control and management of interests	100.0	Copel GeT
GE Olho D’Água S.A.	São Bento do Norte/RN	Production of electricity from wind sources	100.0	São Bento
GE Boa Vista S.A.	São Bento do Norte/RN	Production of electricity from wind sources	100.0	São Bento
GE Farol S.A.	São Bento do Norte/RN	Production of electricity from wind sources	100.0	São Bento
GE São Bento do Norte S.A.	São Bento do Norte/RN	Production of electricity from wind sources	100.0	São Bento
Central Geradora Eólica São Bento do Norte I S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Central Geradora Eólica São Bento do Norte II S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Central Geradora Eólica São Bento do Norte III S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Central Geradora Eólica São Miguel I S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Central Geradora Eólica São Miguel II S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Central Geradora Eólica São Miguel III S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Usina de Energia Eólica Guajiru S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Usina de Energia Eólica Jangada S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Usina de Energia Eólica Potiguar S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Usina de Energia Eólica Cutia S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Usina de Energia Eólica Maria Helena S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Usina de Energia Eólica Esperança do Nordeste S.A.(b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Usina de Energia Eólica Paraíso dos Ventos do Nordeste S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Copel Brisa Potiguar S.A. was incorporated by Copel REN on 12.20.2017
(a) Company management is assessing whether a business purpose change or a closure and transfer of assets to the shareholder is required.
(b) Pre-operating stage.

1.1.2       Joint ventures

			Interest
Joint ventures	Headquarters	Main activity	%	Investor
Voltalia São Miguel do Gostoso I Participações S.A.	São Paulo/SP	Interests in companies	49.0	Copel
Paraná Gás Exploração e Produção S.A. (a)	Curitiba/PR	Exploration of natural gas	30.0	Copel
Costa Oeste Transmissora de Energia S.A.	Curitiba/PR	Transmission of electricity	51.0	Copel GeT
Marumbi Transmissora de Energia S.A.	Curitiba/PR	Transmission of electricity	80.0	Copel GeT
Transmissora Sul Brasileira de Energia S.A.	Florianópolis/SC	Transmission of electricity	20.0	Copel GeT
Caiuá Transmissora de Energia S.A.	Rio de Janeiro/RJ	Transmission of electricity	49.0	Copel GeT
Integração Maranhense Transmissora de Energia S.A.	Rio de Janeiro/RJ	Transmission of electricity	49.0	Copel GeT
Matrinchã Transmissora de Energia (TP NORTE) S.A.	Rio de Janeiro/RJ	Transmission of electricity	49.0	Copel GeT
Guaraciaba Transmissora de Energia (TP SUL) S.A.	Rio de Janeiro/RJ	Transmission of electricity	49.0	Copel GeT
Paranaíba Transmissora de Energia S.A.	Rio de Janeiro/RJ	Transmission of electricity	24.5	Copel GeT
Mata de Santa Genebra Transmissão S.A. (b)	Rio de Janeiro/RJ	Transmission of electricity	50.1	Copel GeT
Cantareira Transmissora de Energia S.A.	Rio de Janeiro/RJ	Transmission of electricity	49.0	Copel GeT
(a) Project activities came to a halt in connection with a Public Class Action. Consortium members have requested the National Oil
Agency (ANP) a release from contractual obligations without encumbrances to bidders, and eventual return of sign-up bonus,
reimbursement of costs incurred and release from guarantees given.
(b) Pre-operating stage.

1.1.3       Associates 

Associated companies	Headquarters	Main activity	Interest
			%	Investor
Dona Francisca Energética S.A.	Agudo/RS	Production of electricity	23.0303	Copel
Foz do Chopim Energética Ltda.(a)	Curitiba/PR	Production of electricity	35.77	Copel
Carbocampel S.A.	Figueira/PR	Coal exploration	49.0	Copel
Dois Saltos Empreendimentos de Geração de Energia Elétrica Ltda. (b)	Curitiba/PR	Production of electricity	30.0	Copel
Copel Amec S/C Ltda. - em liquidação	Curitiba/PR	Services	48.0	Copel
Sercomtel S.A. Telecomunicações (c)	Londrina/PR	Telecommunications	45.0	Copel
Dominó Holdings Ltda. (d)	Curitiba/PR	Interests in companies	49.0	Copel Energia
GBX Tietê II Empreendimentos Participações S.A.	São Paulo/SP	Incorporation of real estate projects	19.31	UEG
(a) In February 2018, the associated Foz do Chopim Energética Ltda. was transferred from Copel to Copel GeT, through an increase in the capital stock.
(b) Pre-operating stage.
(c) Investment reduced to zero due to the impairment tests.
(d) In November 2017, the company was transformed from a corporation into a limited liability company and the investment was changed from a joint venture to an associate.

1.1.4       Joint operations (consortiums)

Joint operations	Interest (%) Copel GeT	Other consortium members
Hydroelectric Power Plant Gov. Jayme Canet Júnior (Mauá)	51.0	Eletrosul Centrais Elétricas S.A.  (49.0%)
Hydroelectric Power Plant Baixo Iguaçu (Note 19.7.1) (a)	30.0	Geração Céu Azul S.A (subsidiary of Neoenergia S.A.) (70%)
(a) Pre-operating stage.

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2. Concessions and Authorizations

12 Months Ended

Dec. 31, 2017

Concessions And Authorizations

Concessions and Authorizations

2.1      Concessions contracts or authorizations obtained by Copel

Copel		Interest %	Maturity
Concession agreement / authorization of the equity
Copel DIS	Contract 046/1999, extended by 5th addendum to the contract	100	07.07.2045
Copel TEL	Authorization Term 54/2003 - Anatel/SVP/PVST	100	Indeterminate
	Authorization Term 305/2012 - Anatel/SVP/PVST	100	Indeterminate
Elejor	Contract 125/2001 - HPP Fundão and Santa Clara	70	05.28.2037
	Authorization - SHP Fundão I and SHP Santa Clara I - 753/2002 and 757/2002	70	12.18.2032
Dona Francisca Energética	Contract 188/1998 - HPP Dona Francisca	23	08.27.2033
Foz do Chopim	Authorization 114/2000 - SHP Arturo Andreoli	36	04.23.2030
UEG Araucária	Authorization 351/1999  - TPP Araucária (60% Copel GET)	20	12.22.2029
Compagás (2.1.1)	Concession gas distribution contract	51	01.20.2019
Dois Saltos (a)	Authorization 5,204/2015	30	04.22.2045
Paraná Gás (1.1.2 - a)	PART-T-300_R12 4861-.0000.99/2014-00 - ANP	30	05.15.2045
Usina de Energia Eólica São João S.A. (b)	MME Ordinance 173 /2012 - WPP São João	49	03.25.2047
Usina de Energia Eólica Carnaúba S.A. (b)	MME Ordinance 204 /2012 - WPP Carnaúbas	49	04.08.2047
Usina de Energia Eólica Reduto S.A. (b)	MME Ordinance 230 /2012 - WPP Reduto	49	04.15.2047
Usina de Energia Eólica Santo Cristo S.A. (b)	MME Ordinance 233/2012 - WPP Santo Cristo	49	04.17.2047
(a) Building under construction.
(b) Subsidiaries of Voltalia São Miguel do Gostoso I Participações S.A.
Hydroelectric Power Plant - HPP
Small Hydroelectric Plant - SHP
Thermal Power Plant - TPP
Wind Power Plant - WPP

 2.1.1       Compagás

Compagás is a party to a concession agreement entered into with the Concession Grantor, the State of Paraná, setting July 6, 2024 as the expiry date of the concession. Such date has always been announced and considered for assessment of the balances of the prior-year financial statements.

On December 7, 2017, the State of Paraná published Supplementary Law 205, introducing a new interpretation of the expiry of the concession, understanding that expiry will be on January 20, 2019. 

The management board of Compagás, its Parent company and other shareholders are evaluating and questioning the effects of the aforesaid law, understanding that they conflict with the provisions of the concession agreement currently in force. However, as by the end of issuance of these financial statements such discussion had not yet been closed and that law continues in force, the effects on the financial statements for 2017 had to be taken into consideration.

Management will continue to make its best efforts to protect the Company interests, aiming to appropriately settle the impacts of the new interpretation given by the Concession Grantor and find alternatives necessary to maintain the concession in a sustainable manner.

The impacts on Compagás financial statements for 2017 by accelerating the expiry of the concession are as follows:

	End of concession in 2024		End of concession
12.31.2017		Effects	in 2019
STATEMENTS OF FINANCIAL POSITION
Noncurrent assets
Accounts receivable related to the concession (Note 10.5)	148,868	154,800	303,668
Intangible assets (Note 20.3)	198,688	(154,800)	43,888
STATEMENTS OF INCOME
Net operating revenue
Fair value of assets from the indemnity for the concession	(197)	41,078	40,881

 2.2      Concession contracts or authorizations obtained by Copel GeT and its investees 

Copel GeT		Interest %	Maturity
ONEROUS CONCESSION BY THE USE OF PUBLIC PROPERTY - UBP
Generation Concession 001/2007 - HPP Gov. Jayme Canet Júnior (Mauá)		51	07.02.2042
Generation concession 001/2011 - HPP Colíder (a)		100	01.16.2046
Ordinance 133/2011 - SHP Cavernoso II		100	02.27.2046
Generation Concession 002/2012 - HPP Baixo Iguaçu (a)		30	09.13.2049
Generation Concession 007/2013
HPP Apucaraninha		100	10.12.2025
HPP Chaminé		100	08.16.2026
HPP Derivação do Rio Jordão		100	11.15.2029
HPP Cavernoso		100	01.07.2031
PUBLIC SERVICE CONCESSIONS
Generation concession 045/1999
TPP Figueira		100	03.26.2019
HPP Gov. Bento Munhoz da Rocha Neto (Foz do Areia)		100	09.17.2023
HPP São Jorge		100	12.03.2024
HPP Guaricana		100	08.16.2026
HPP Gov. Ney Aminthas de Barros Braga (Segredo)		100	11.15.2029
HPP Gov. José Richa (Salto Caxias)		100	05.04.2030
Authorization 278/1999 - WPP Palmas		100	09.28.2029
Dispatch 182/2002 - Hydroelectric Generating Plant - HGP Melissa, HGP Pitangui and
HGP Salto do Vau (only register with ANEEL)		100	-
Generation concession 002/2016 - HPP Gov. Pedro Viriato Parigot de Souza (GPS)		100	01.05.2046
In progress for homologation from ANEEL - HPP Marumbi		100	-
Authorization Aneel 5,373/2015 - HGP Chopim I (only register with ANEEL)		100	-
Concession agreement / authorization of the equity
UEG Araucária	Authorization 351/1999 - TPP Araucária (20% - Copel)	60	12.22.2029
Nova Asa Branca I	MME Ordinance 267/2011 - WPP Asa Branca I	100	04.24.2046
Nova Asa Branca II	MME Ordinance 333/2011 - WPP Asa Branca II	100	05.30.2046
Nova Asa Branca III	MME Ordinance 334/2011 - WPP Asa Branca III	100	05.30.2046
Nova Eurus IV	MME Ordinance 273/2011 -WPP Eurus IV	100	04.26.2046
Santa Maria	MME Ordinance 274/2012 - WPP SM	100	05.07.2047
Santa Helena	MME Ordinance 207/2012 - WPP Santa Helena	100	04.08.2047
Ventos de Santo Uriel	MME Ordinance 201/2012 - WPP Santo Uriel	100	04.08.2047
GE Boa Vista	MME Ordinance 276 /2011 - WPP Dreen Boa Vista	100	04.27.2046
GE Farol	MME Ordinance 263 /2011 - WPP Farol	100	04.19.2046
GE Olho D’Água	MME Ordinance 343 /2011 - WPP Dreen Olho D'Água	100	05.31.2046
GE São Bento do Norte	MME Ordinance 310 /2011 - WPP Dreen São Bento do Norte	100	05.18.2046
Esperança do Nordeste	MME Ordinance 183/2015 - WPP Esperança do Nordeste (a)	100	05.10.2050
Paraíso dos Ventos do Nordeste	MME Ordinance 182/2015 - WPP Paraíso dos Ventos do Nordeste (a)	100	05.10.2050
Usina de Energia Eólica Jangada	Resolution 3,257/2011 - WPP GE Jangada (a)	100	01.04.2042
Maria Helena	Resolution 3,259/2011 - WPP GE Maria Helena (a)	100	01.04.2042
Usina de Energia Eólica Potiguar	MME Ordinance 179/2015 - WPP Potiguar (a)	100	05.10.2050
Usina de Energia Eólica Guajiru	Resolution 3,256/2011 - WPP Dreen Guajiru (a)	100	01.04.2042
Usina de Energia Eólica Cutia	Resolution 3,258/2011 - WPP Dreen Cutia (a)	100	01.04.2042
São Bento do Norte I	Ordinance 349/2015 - WPP São Bento do Norte I (a)	100	08.03.2050
São Bento do Norte II	Ordinance 348/2015 - WPP São Bento do Norte II (a)	100	08.03.2050
São Bento do Norte III	Ordinance 347/2015 - WPP São Bento do Norte III (a)	100	08.03.2050
São Miguel I	Ordinance 352/2015 - WPP São Miguel I (a)	100	08.03.2050
São MigueI lI	Ordinance 351/2015 - WPP São Miguel II (a)	100	08.03.2050
São Miguel III	Ordinance 350/2015 - WPP São Miguel III (a)	100	08.03.2050
(a) Building under construction.

Copel GeT		Interest %	Maturity
Transmission lines and substations concession agreements
Contract 060/2001 (extended by 3rd addendum to the contract) - Transmission facilities – several joint ventures		100	12.31.2042
Contract 075/2001 - Transmission line Bateias - Jaguariaíva		100	08.16.2031
Contract 006/2008 - Transmission line Bateias - Pilarzinho		100	03.16.2038
Contract 027/2009 - Transmission line Foz do Iguaçu - Cascavel Oeste		100	11.18.2039
Contract 010/2010 - Transmission line Araraquara 2 - Taubaté (a)		100	10.05.2040
Contract 015/2010 - Substation Cerquilho III		100	10.05.2040
Contract 022/2012 - Transmission line - Foz do Chopim - Salto Osório C2; Transmission line 230 kV Londrina - Figueira		100	08.26.2042
Contract 002/2013 - Transmission line - Assis - Paraguaçu Paulista II; Substation 230/88 kV Paraguaçu Paulista II		100	02.24.2043
Contract 005/2014 - Transmission line - Bateias - Curitiba Norte; Substation 230/138 kV Curitiba Norte		100	01.28.2044
Contract 021/2014 - Transmission line Foz do Chopim - Realeza; Substation Realeza 230/138 kV - Pátio novo 230 kV		100	09.04.2044
Contract 022/2014 - Transmission line Assis - Londrina		100	09.04.2044
Contract 006/2016 - Transmission line 525kV Curitiba Leste - Blumenau C1 (a)		100	04.06.2046
Contract 006/2016 - Transmission line 230 kV Uberaba - Curitiba Centro C1 e C2 (Underground) (a)
Contract 006/2016 - Substation 230/138 kV Curitiba Centro (SF6) - 230/138 kV - 2 x ATF 150 MVA (a)
Contract 006/2016 - Substation 230/138 kV Medianeira (Pátio novo 230 kV) - 2 x 150 MVA (a)
Contract 006/2016 - Transmission line 230 kV Baixo Iguaçu - Realeza (a)
Contract 006/2016 - Substation 230/138 kV Andirá Leste - 2 x ATR 150 MVA (a)
Concession agreement / authorization of the equity
Costa Oeste Transmissora	Contract 001/2012 - Transmission line Cascavel Oeste - Umuarama; Substation Umuarama 230/20138 kV	51	01.11.2042
Transmissora Sul Brasileira	Contract 004/2012 - Transmission line Nova Santa Rita - Camaquã 3;	20	05.09.2042
	Transmission line 230 kV Camaquã 3 - Quinta; Transmission line 525 kV Salto Santiago - Itá;
	Transmission line 525 kV Itá - Nova Santa Rita; Substation Camaquã 3 230/69/2013,8 kV
Caiuá Transmissora	Contract 007/2012 - Transmission line Umuarama - Guaíra; Transmission line 230 kV Cascavel Oeste - Cascavel Norte;	49	05.09.2042
	Substation Santa Quitéria 230/69-13,8 kV; Substation Cascavel Norte 230/20138-13,8 kV
Marumbi Transmissora	Contract 008/2012 - Transmission line Curitiba - Curitiba Leste; Substation Curitiba Leste 525/230 kV	80	05.09.2042
Integração Maranhense	Contract 011/2012 - Transmission line Açailândia - Miranda II	49	05.09.2042
Matrinchã Transmissora	Contract 012/2012 - Transmission line Paranaíta - Ribeirãozinho; Transmission line 500 kV Paranaíta - Cláudia;	49	05.09.2042
	Substation Cláudia 500 kV; Transmission line 500 kV Cláudia - Paranatinga; Substation Paranatinga 500 kV;
	Transmission line 500 kV Paranatinga - Ribeirãozinho
Guaraciaba Transmissora	Contract 013/2012 - Transmission line Ribeirãozinho - Marimbondo II;	49	05.09.2042
	Transmission line 500 kV Ribeirãozinho - Rio Verde Norte; Transmission line 500 Rio Verde Norte - Marimbondo II;
	Sectioning of Transmission lines 500 kV Marimbondo - Araraquara, at Substation Marimbondo II;
	Substation Marimbondo II 500 kV
Paranaíba Transmissora	Contract 007/2013 - Transmission line - T 500 kV Barreiras II - Rio das Éguas;	24.5	05.01.2043
	Transmission line 500 kV Rio das Éguas - Luziânia; Transmission line 500 kV Luziânia - Pirapora 2
Mata de Santa Genebra	Contract 001/2014 - Transmission line - Itatiba - Bateias (a); Transmission line 500 kV Itatiba - Bateias (a);	50.1	05.13.2044
	Transmission line 500 kV Araraquara 2 - Itatiba (a); Transmission line 500 kV Araraquara 2 - Fernão Dias (a);
	Substation Santa Bárbara D'Oeste 440 kV (a); Substation Itatiba 500 kV (a);
	Substation 500/440 kV Fernão Dias (a)
Cantareira Transmissora	Contract 019/2014 - Transmission line - Estreito - Fernão Dias (a)	49	09.04.2044
(a) Buildings under construction.

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3. Basis of Preparation

12 Months Ended

Dec. 31, 2017

Basis Of Preparation

Basis of Preparation

3.1      Statement of compliance

The consolidated financial statements have been prepared in accordance with International Financial Reporting Standards (IFRS) issued by the International Accounting Standards Board, IASB.

Company's management believes that all the relevant information used in its management is evidenced in the consolidated financial statements.

The issuance of the consolidated financial statements was approved by Management on May 14, 2018.

3.2      Functional and presentation currency

The financial statements are presented in Brazilian Reais, which is the functional currency of the Company. The financial information has been rounded to the nearest thousand, unless otherwise indicated.

3.3      Basis of measurement

The financial statements were prepared based on the historical cost, except for certain financial instruments measured at fair value and investments, as described in the respective accounting policies and notes.

3.4      Use of estimates and judgments

In the preparation of these financial statements, Management used judgments, estimates and assumptions that affect the application of accounting policies and the reported amounts of assets, liabilities, income and expenses of the Company. Actual results may differ from those estimates.

Estimates and assumptions are reviewed on a continuous basis. Reviews of estimates are recognized in the period in which it is revised (prospective basis).

3.4.1       Judgments

Information about judgment referring to the adoption of accounting policies which impacts significantly the amounts recognized in the consolidated financial statements, except those involving estimates, is included in the following notes:

·         Note 4.2 - Basis of consolidation; and

·         Note 4.3 - Financial instruments.

3.4.2       Uncertainties on assumptions and estimates

Information on uncertainties related to assumptions and estimates that pose a significant risk of resulting in a material adjustment within the next financial year is included in the following notes:

·         Notes 4.3.8 and 9 – Net sectorial financial assets and liabilities;

·         Notes 4.5 and 19 - Property, plant and equipment;

·         Notes 4.6 and 20 - Intangible assets; 

·         Notes 4.7 and 19.9 - Impairment of assets;

·         Notes 4.8 and 30 - Provisions for legal claims;

·         Note 4.9.1 - Unbilled revenues;

·         Note 4.9.2 - Interest;

·         Note 4.11 - Power purchase and sales transactions in the Spot Market (Electric Energy Trading Chamber – CCEE);

·         Note 7.3 - Allowance for doubtful accounts;

·         Note 10.4 - Remeasurement of RBSE assets;

·         Note 11 - Accounts receivable related to concession compensation;

·         Note 13.2 - Deferred income tax and social contribution; and

·         Note 25 - Post-employment benefits.

3.5      Management's Judgment on Going Concern

Management has concluded that there are no material uncertainties that cast doubt on the Company’s ability to continue as a going concern. No events or conditions were identified that, individual or in the aggregate, may raise significant doubts on its ability to continue as a going concern.

The main bases of judgment used for such conclusion are: (i) main activities resulting from long-term concessions; (ii) robust shareholders equity; (iii) strong operating cash generation, including financial capacity to settle commitments entered into with financial institutions; (iv) historical series of profits in the last fiscal years; and (v) fulfillment of the objectives and targets set forth in the Company's Strategic Planning, which is approved by Management, monitored and reviewed periodically, seeking the continuity of its activities.

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4. Significant Accounting Policies

12 Months Ended

Dec. 31, 2017

Significant Accounting Policies

Significant Accounting Policies

4.1      Restatement of comparative balances

The Company’s management adjusted the consolidated financial statements at December 31, 2016 and December 31, 2015 as follows: 

4.1.1       Investments

During the preparation of our unaudited consolidated interim financial information as of September 30, 2017, the Company's Management identified an investment by its indirect subsidiary UEG Araucária Ltda. in a Multimarket Investment Fund, which held shares of other investment funds that in turn invested in a private company, whose main asset was a real estate development. As of September 30, 2017, such investment corresponded to R$157,079 and was recognized under “Bonds and Securities”, in current assets, because, according to information delivered by the management of UEG Araucária to the Company’s Management, that investment was made in a wholly-owned fund, whose benchmark was 103.5% of the CDI (Interbank Deposit Certificate) rate and that was composed of shares issued by other investment funds and government bonds, with immediate liquidity and that were available for sale. This investment amounted to R$165,749 as of December 31, 2016 and R$111,760 as of December 31, 2015, and was also recognized under “Bonds and Securities”.

In order to determine the value of such investment and its accounting classification, as well as the extent of any possible impact, the Company's Management used independent appraisers and legal advisers in accordance with best governance practices, including an internal investigation into the circumstances of the investment. The valuation has already been concluded and the investigations are in their final stage. These investigations found that the investment occurred strictly in the UEG Araucária and violated Copel’s investment policy, which authorizes investments in wholly-owned investment funds only to the extent such funds invest exclusively in bonds issued by the Brazilian federal government or by financial institutions controlled by the Brazilian federal government.

Based on the information available during the preparatioan of the consolidated financial statements for 2017, we concluded that it is necessary to recognize a provision for the impairment of the investment in light of its specific characteristics, including the status of its underlying real estate development and the outlook for its future cash flow generation. We also determined that this provision should have been recorded in prior years because the information known during the preparation of those consolidated financial statements was already available at that time and should have been considered in preparing the consolidated financial statements for 2016 and 2015.

In the course of preparing our consolidated financial statements, were analyzed all legal and corporate documents of the investment fund and it was concluded that from July 2015, UEG Araucária started to have significant influence in the private company, even though indirectly. Thus, from July 2015, the remaining balance of the investment, until then classified as a financial instrument measured by its fair value, became measured and disclosed as an associate, and the effects of the change in the asset classification were recorded in the company's profit or loss of that year. 

Supported by a report prepared in March 2018 by independent appraisers engaged by Copel, the Company's Management determined the fair value of the financial instrument as of July 2015, identifying the necessity to reduce the asset by R$99,031, with the corresponding increase in financial expenses. From then on, the remaining balance, became an investment in an associate, was decreased by an additional provision for devaluation of R$4,955, with the corresponding decrease in equity in earnings of investees in the consolidated financial statements for the fiscal year ended December 31, 2015. Accordingly, the total reduction on January 1, 2016 was R$103,986.

In the consolidated financial statements for the fiscal year ended December 31, 2016, additional provision for devaluation of R$52,201, of which R$55,284 was the result of equity in earnings of investees, R$4,300 as financial expense and R$7,383 as financial income.

Hence, the consolidated financial statements at December 31, 2016 and December 31, 2015, presented for comparative purposes, have been restated so that the remaining balances of these investment, in the amounts of R$9,562 at December 31, 2016 and R$7,774 at December 31, 2015 were also reclassified to non-current assets, as Investments. 

4.1.2       Provisions for legal claims - CVA tax regime

In 2017 Copel recognized prior period adjustments to the account of provisions related to tax litigation due to the taxation of the Sectorial financial assets and liabilities currently classified as Sectorial financial assets and liabilities. The impact of these adjustments represents at December 31, 2016 an increase by R$31,995 in Financial expenses versus Provision for legal claims, in noncurrent liabilities, and an increase by R$10,878 in Deferred income tax and social contribution in the income statement versus Deferred taxes, in noncurrent assets. The loss for the year incurred by Copel increased by R$21,117.

4.1.3       Effects of restatement of comparative balances

Based on the guidelines of IAS 8 - Accounting Policies, Changes in Accounting Estimates and Correction of Errors, the Statements of Financial Position and Statements of Income, of Comprehensive Income, of Changes in Equity and of Cash Flows are being restated for comparison purposes: 

12.31.2016	As previously stated	Adjustments	Restated
STATEMENTS OF FINANCIAL POSITION
Assets	30,434,209	(145,309)	30,288,900
Current assets	4,402,990	(165,749)	4,237,241
Bonds and securities	302,398	(165,749)	136,649
Noncurrent assets	26,031,219	20,440	26,051,659
Deferred income tax and social contribution	803,477	10,878	814,355
Investments	2,334,950	9,562	2,344,512
Liabilities	30,434,209	(145,309)	30,288,900
Noncurrent liabilities	9,622,727	31,995	9,654,722
Provisions for legal claims	1,241,343	31,995	1,273,338
Equity	15,155,446	(177,304)	14,978,142
Attributable to controlling shareholder's	14,864,165	(146,067)	14,718,098
Profit retention reserve	5,162,983	(146,067)	5,016,916
Attributable to non-controlling interest	291,281	(31,237)	260,044
STATEMENTS OF INCOME
Operational expenses / income	(823,536)	(55,284)	(878,820)
Equity in earnings of investees	221,695	(55,284)	166,411
Profit before financial results and taxes	2,044,102	(55,284)	1,988,818
Financial results	(565,744)	(28,912)	(594,656)
Financial income	896,553	7,383	903,936
Financial expenses	(1,462,297)	(36,295)	(1,498,592)
Operating profit	1,478,358	(84,196)	1,394,162
Income tax and social contribution	(530,568)	10,878	(519,690)
Deferred income tax and social contribution	58,754	10,878	69,632
Net income	947,790	(73,318)	874,472
Attributed to controlling shareholders	958,650	(62,878)	895,772
Attributed to non-controlling interest	(10,860)	(10,440)	(21,300)
STATEMENTS OF COMPREHENSIVE INCOME
Total comprehensive income, net of taxes	(57,201)	-	(57,201)
Comprehensive income	890,589	(73,318)	817,271
Attributed to controlling shareholders	901,384	(62,878)	838,506
Attributed to non-controlling interest	(10,795)	(10,440)	(21,235)
STATEMENTS OF CHANGES IN EQUITY
Net income	947,790	(73,318)	874,472
Equity	15,155,446	(177,304)	14,978,142
STATEMENTS OF CASH FLOWS
Cash flows from operational activities	1,476,818	-	1,476,818
Net income	947,790	(73,318)	874,472
Unrealized monetary and exchange variations - net	1,142,316	28,912	1,171,228
Deferred income tax and social contribution	(58,754)	(10,878)	(69,632)
Equity in earnings of investees	(221,695)	55,284	(166,411)
Cash flows from investment activities	(2,511,075)	-	(2,511,075)
Cash flows from financing activities	535,603	-	535,603
Change in cash and cash equivalents	(498,654)	-	(498,654)
Basic and diluted earnings per share attributable to
shareholders of parent company:
Common shares	3.34587	(0.21946)	3.12641
Class “A” preferred shares	3.68045	(0.24139)	3.43906
Class “B” preferred shares	3.68045	(0.24139)	3.43906

12.31.2015	As previously stated	Adjustments	Restated
STATEMENTS OF FINANCIAL POSITION
Assets	28,947,657	(103,986)	28,843,671
Current assets	6,933,397	(111,760)	6,821,637
Bonds and securities	406,274	(111,760)	294,514
Noncurrent assets	22,014,260	7,774	22,022,034
Investments	2,224,710	7,774	2,232,484
Liabilities	28,947,657	(103,986)	28,843,671
Equity	14,584,478	(103,986)	14,480,492
Attributable to controlling shareholder's	14,245,728	(83,189)	14,162,539
Profit retention reserve	5,413,572	(83,189)	5,330,383
Attributable to non-controlling interest	338,750	(20,797)	317,953
STATEMENTS OF INCOME
Operational expenses / income	(1,020,077)	(4,955)	(1,025,032)
Equity in earnings of investees	92,545	(4,955)	87,590
Profit before financial results and taxes	2,126,451	(4,955)	2,121,496
Financial results	(328,671)	(99,031)	(427,702)
Financial expenses	(1,098,298)	(99,031)	(1,197,329)
Operating profit	1,797,780	(103,986)	1,693,794
Net income	1,265,551	(103,986)	1,161,565
Attributed to controlling shareholders	1,192,738	(83,189)	1,109,549
Attributed to non-controlling interest	72,813	(20,797)	52,016
STATEMENTS OF COMPREHENSIVE INCOME
Total comprehensive income, net of taxes	291,344	-	291,344
Comprehensive income	1,556,895	(103,986)	1,452,909
Attributed to controlling shareholders	1,483,587	(83,189)	1,400,398
Attributed to non-controlling interest	73,308	(20,797)	52,511
STATEMENTS OF CHANGES IN EQUITY
Net income	1,265,551	(103,986)	1,161,565
Equity	14,584,478	(103,986)	14,480,492
STATEMENTS OF CASH FLOWS
Cash flows from operational activities	1,320,728	-	1,320,728
Net income	1,265,551	(103,986)	1,161,565
Unrealized monetary and exchange variations - net	617,197	99,031	716,228
Equity in earnings of investees	(92,545)	4,955	(87,590)
Cash flows from investment activities	(1,951,618)	-	(1,951,618)
Cash flows from financing activities	1,371,486	-	1,371,486
Change in cash and cash equivalents	740,596	-	740,596
Basic and diluted earnings per share attributable to
shareholders of parent company:
Common shares	4.16287	(0.29034)	3.87253
Class “A” preferred shares	4.57807	(0.31817)	4.25990
Class “B” preferred shares	4.56917	(0.30938)	4.25979

4.2      Basis of consolidation

4.2.1       Calculation of equity in earnings of investees

Payment of dividends decreases the carrying value of investments.

When required, for calculation of equity in earnings of investees, the investees' financial statements are adjusted to adapt their policies to the Parent Company's accounting policies.

4.2.2       Subsidiaries

The subsidiaries are entities to which the investor is exposed to, or has a right over the variable returns arising from its involvement with them and has the ability to affect those returns exerting its power over the entities.

The financial statements of the subsidiaries are included in the consolidated financial statements as from the date they start to be controlled by the Company until the date such control ceases.

The balances of the subsidiaries’ assets and liabilities, and profit or loss, are consolidated and transactions between consolidated companies are eliminated.

4.2.3       Interest of non-controlling shareholders

Non-controlling interest is presented in equity, separately from the equity attributable to the Parent Company's shareholders. Profits, losses and other comprehensive income are also allocated separately from the ones allocated to the Parent Company's shareholders, even if this results in non-controlling interest having a deficit balance.

4.2.4       Joint ventures and associates

Joint ventures are entities over which the Company, subject to an agreement, has the ability to affect returns exerting its power in conjunction with other parties, irrespective of the percentage of interest in the voting capital.

Associates are entities over which the Company exerts significant influence regarding financial and operational decisions, without control.

When the share in losses of a joint venture or associate equals or exceeds the accounting balance of the investor’s equity interest in the investee, the investor should discontinue the recognition of its share in future losses. Additional losses will be considered, and a liability will be recognized, only if the investor incurs legal or constructive obligations, or performs payments on behalf of the investee. Should the investee subsequently determine profits, the investor should resume the recognition of its interest in these profits only after the point at which the portion to which it is entitled to in these subsequent profits equals its share in unrecognized losses.

4.2.5       Joint operations (consortiums)

Joint operation is a joint business according to which parties that jointly control the business have rights on assets and obligations regarding liabilities related to the business.

Joint operations are recorded in the Company which is holding the share, in proportion to the quotas of assets, liabilities and income (loss).

4.3      Financial instruments

The Company does not use derivative financial instruments.

Non-derivative financial instruments are recognized on the trading date, i.e. when the obligation or right arises. They are initially recognized at fair value plus any directly attributable transaction costs.

Fair values are determined based on the market quotation, for financial instruments traded in active markets, and for those with no quotations available on the market, fair values are determined by the present value of expected cash flows method.

After the initial recognition, the non-derivative financial instruments are measured as described below:

Financial assets

4.3.1       Financial instruments at fair value through profit or loss

Financial instruments designated as such upon initial recognition are classified as held for trading and if the Company manages these investments and make purchase or sale decisions based on their fair value in the context of an investment and risk management strategy. After initial recognition, transaction costs and attributable interests, when incurred, are recognized through profit and loss.

4.3.2       Loans and receivables

This category only comprises non-derivative assets with fixed or determinable payments which are not quoted in any active markets. They are measured using the amortized cost or effective interest rate methods.

4.3.3       Financial instruments available-for-sale

The initial and subsequent measurement of financial instruments classified as “available for sale” is based on their fair value. The changes in the fair value resulting from the difference between the market interest rates and the effective interest rates are recognized in other comprehensive income, net of taxes. Interest set at the beginning of the agreement, calculated based on the effective interest rate method, as well as any changes in expected cash flows, are recognized directly in income for the period. At settlement of a financial instrument classified as available for sale, any gains or losses recognized in OCI are reclassified to income for the year.

4.3.4       Financial instruments held to maturity

If the Company is interested in and capable of holding any financial assets until maturity, they are classified as held to maturity. They are measured at amortized cost using the effective interest rate method, deducting any reductions in their recoverable value. 

Financial liabilities and equity instruments

4.3.5       Financial liabilities measured at fair value through profit or loss

Financial liabilities designated as such upon initial recognition are classified as held for trading. They are stated at fair value and related gains or losses are recognized in income. The net losses or gains recognized in the income statement also include interest paid on the financial liability.

4.3.6       Other financial liabilities

Other financial liabilities are measured at amortized cost, using the effective interest method. This method is also used to allocate interest expense of these liabilities for the period. The effective interest rate is the rate that exactly discounts estimated future cash flows (including fees paid or received that form an integral part of the effective interest rate, transaction costs and other premiums or discounts) over the expected life of the financial liability or, when appropriate, over a shorter period, to the net carrying amount of the financial liability.

4.3.7       Derecognition of financial liabilities

The Company derecognizes financial liabilities only when its obligations are discharged, canceled or settled. The difference between the book value of the derecognized financial liability and the corresponding disbursement made or to be made is recorded to income.

Net sectorial financial assets and liabilities and related to the concession

4.3.8       Net sectorial financial assets and liabilities

An amendment to the concession agreement of distribution companies, approved by ANEEL Order No. 4,621/2014, provides that, in the event of termination of the concession for any reason, the residual values of Part A items and other financial components not recovered or returned through tariff are incorporated in the calculation of compensation or deducted from unamortized assets indemnity values, thus protecting rights or obligations of the distribution company to the Granting Authority.

Accordingly, the related sectorial financial assets and liabilities comply with the criteria established by the conceptual framework for Financial Reporting issued by IASB, mandating the recognition of such sector financial assets and liabilities of electricity distribution companies as from the year 2014. Thus, Copel Distribuição recognized the related sector financial assets and liabilities in its statutory financial statements in December 2014. 

The Company accounts for variations in sectorial financial assets and liabilities when there is a probable expectation that future revenue, equivalent to the costs incurred, will be billed and charged, resulting in the direct transfer of costs at an adjusted tariff according to the parametric formula defined in the concession agreement. The balance of these variations is retained and updated until the next tariff adjustment / review, when the Granting Authority authorizes the transfer in the Company’s tariff basis and consequently the transfer to the consumer in the next annual cycle, which occurs as from June 24 of each year.

4.3.9       Accounts receivable related to the concession

Power transmission concession

These refer to receivables in connection with the power transmission concession agreements and include the following amounts: (i) revenues from the construction of transmission infrastructure for use by system users; (ii) the financial return on these revenues guaranteed by the Granting Authority during the concession period.

Revenues under power transmission concession agreements are collected by making infrastructure available to system users and are not subject to demand risk, and are thus considered guaranteed revenues, called Annual Permitted Revenues (Receita Anual Permitida or RAP, in Portuguese) to be received during the concession period. Amounts are billed monthly to the users of this infrastructure, pursuant to reports issued by the National System Operator (Operador Nacional do Sistema or ONS, in Portuguese). Upon expiration of the concession, any uncollected amounts related to the construction of infrastructure shall be received directly from the Granting Authority, as an unconditional right to cash reimbursement pursuant to the concession agreement, as compensation for investments made and not recovered through tariffs (RAP).

These financial assets do not have active market, have fixed and determinable cash flows, and therefore are classified as “loans and receivables”. They are initially estimated based on their respective fair values and later measured according to the amortized cost calculated under the effective interest rate method.

Specifically to the Concession Agreement 060/2001, the subsequent additions, which represents expansion, improvement or enhancement of infrastructure, are recognized as a concession financial asset by virtue of representing the future generation of additional operating cash, according to specific rules from the Granting Authority.

Power distribution service concession

These refer to reimbursements set forth in the public power distribution service concession agreements, which the Company understands as an unconditional right to cash payments from the Granting Authority upon expiration of the concession. These reimbursements are designed to reimburse Copel DIS for the investments made in infrastructure, which have not been recoverable through the collection of tariffs at the end of the concession because of their useful lives being longer than the term of said concession.

Since these financial assets do not have determinable fixed cash flows - as the Company operates under the assumption that the value of the corresponding reimbursements will be based on the replacement cost of the concession assets and as they do not feature the necessary characteristics to be classified under any other category of financial assets – they are classified as “available for sale”. The cash flows related to these assets are determined taking into account the Regulatory Compensation Basis (Base de Remuneração Regulatória or BRR, in Portuguese), defined by the Granting Authority. The methodology of the BRR is based on the replacement cost of the assets that make up the power distribution infrastructure related to the concession. This tariff basis (BRR) is reviewed every four years taking into account several factors. Its goal is to reflect the variation in the prices of physical assets, including write-offs, depreciation, and additions of assets to the concession infrastructure (physical assets).

The return on these financial assets is based on the regulatory Weighted Average Cost of Capital or WACC approved by ANEEL in the periodic rate review process, whose amount is included in the tariffs charged to customers and collected monthly.

1st, 2nd, 3rd and 4th Tariff Readjustment Cycles were conducted every four years and, beginning on the 5th cycle, which started in January 2016, they will be conducted every five years, considering a change introduced by the fifth amendment to the concession agreement.

Gas Concession

Gas concession agreement falls the bifurcated model, where part of the investments made by the concessionaire is paid by users of the public service and the other part is indemnified by the Granting Authority, the State of Paraná, at the end of the concession. This model contemplates the recognition of financial assets and intangible assets.

The amount recognized as a financial asset is the one that will be indemnified by the Granting Authority corresponding to the investments made in the last ten years prior to the end of the concession as foreseen in the agreement and which the Company understands as an unconditional right to cash payments from the Granting Authority upon expiration of the concession.

Since these financial assets do not have determinable fixed cash flows – as the Company operates under the assumption that the value of the corresponding reimbursements will be based on the replacement cost of the concession assets and as they do not feature the necessary characteristics to be classified under any other category of financial assets – they are classified as “available for sale”.

4.3.10     Accounts receivable from concession indemnification

Arises from the residual balance of assets of the power transmission and generation infrastructure not yet depreciated and / or amortized existing at the end of the concession.

The amounts are transferred from Accounts receivable related to the concession, Property, plant and equipment and Intangible assets to the power transmission and generation activities, respectively, with the end of the concession.

At the end of each reporting period, Management evaluates the recoverability of the asset, remeasuring its cash flow based on its best estimate.

4.3.11     Accounts payable related to the concession

Refers to the amounts set forth in the concession agreement in connection with the right to explore hydraulic energy potential (onerous concession), whose agreement is signed as Use of Public Property (Uso do Bem Público or UBP, in Portuguese) agreements. The asset is recognized on the date of signature of the concession agreement, corresponding to the present value of future cash payments for the concession. The liability is then remeasured using the effective interest rate and reduced by contracted payments.

4.4      Inventories (including property, plant and equipment and intangible assets - concession agreement)

Materials and supplies in inventory, classified under current assets and those assigned for investments, classified under property, plant and equipment, and intangible assets – concession agreements, have been recorded at their average acquisition cost. Recorded amounts do not exceed their net realizable value.

4.5      Property, plant and equipment

The assets related to the public service concession agreement are depreciated according to the straight-line method based on annual rates set forth and reviewed periodically by ANEEL, which are used and accepted by the market as representative of the economic useful life of the assets related to concession's infrastructure. Assets related to contracts for the use of public property under the independent electricity producer scheme are depreciated based on annual rates established by ANEEL limited to the concession period. All other fixed assets are depreciated using the straight-line method based on estimates of their useful lives.

Costs directly attributable to construction work as well as interest and financial charges on loans from third parties during construction are recorded under property, plant and equipment in progress, if it is probable that they will result in future economic benefits for the Company.

4.6      Intangible assets

Software acquired from third parties and those internally developed are measured at acquisition cost and depreciated over five years. Intangibles from Concession Agreements are discussed below.

4.6.1       Onerous concession of electric power generation

Corresponds to acquisition of exploration rights on hydropower potential whose contract is signed as Use of Public Property - UBP. 

During construction work, this asset is recognized at the present value of future cash disbursements during the Concession Agreement term. When commercial operation starts, the amount starts to be amortized during the concession period.

4.6.2       Hydrological risk renegotiation (Generation Scaling Factor - GSF)

Asset consisting of the renegotiation of the hydrological risk under the terms of Law No. 13,203/2015, arising from the excess amount between the amounts recovered from the cost with the adjustment of the Energy Reallocation Mechanism - MRE (GSF) subtracted from the total cost of the risk premium to be amortized over the energy supply period in the regulated environment. The amount was transformed by Aneel into an extension of the concession period, which is amortized on a straight-line basis as from January 1, 2016 until the end of the new concession period, according to note 14.1.

4.6.3       Concession agreement – electricity distribution

These comprise the right to control infrastructure, built or acquired by the operator or provided to be used by the operator as part of the electric energy public service concession agreement (the right to charge fees to the users of the public service provided by the operator), in compliance with IAS 38 – Intangible Assets, and IFRIC 12 – Concession Agreements.

Intangible assets are recorded at their fair acquisition and construction value, less accumulated amortization and impairment losses, when applicable.

The amortization of intangible assets reflects the pattern in which it is expected that future economic benefits will flow to Copel DIS during the concession period.

4.6.4       Concession agreement – gas distribution

Intangible assets from the construction of infrastructure and the purchase of assets required for the provision of gas distribution services correspond to the right to charge users for the gas supply.

This intangible asset was initially recognized at acquisition, formation or construction cost, plus interest and other capitalized finance charges. This asset is amortized using the straight-line basis over its estimated useful life, considering the economic benefits generated by intangible assets.

4.6.5       Intangible assets acquired separately

Intangible assets with a defined useful life, acquired separately, are recorded at cost, less accumulated amortization and accumulated impairment losses. Amortization is recognized using the straight-line method based on the estimated useful lives of the corresponding assets. The estimated useful lives and the amortization method are reviewed at the end of each reporting period, with the effect of any changes in estimate being accounted for on a prospective basis. 

4.6.6       Derecognition of intangible assets

An intangible asset is derecognized when no future economic benefits are expected from use or disposal. Gains or losses arising from disposal of an intangible asset are recognized in profit or loss, measured as the difference between net disposal proceeds and the carrying amount of the asset.

4.7      Impairment of assets

Assets are assessed to detect evidence of impairment.

4.7.1       Financial assets

A financial asset not measured at fair value through profit or loss is assessed at each reporting date to determine whether there is objective evidence that it might be impaired. A financial asset is considered to be impaired if objective evidence indicates that a loss event has occurred after the initial recognition of the asset and that the loss event had a negative effect on the estimated future cash flows that can be reliably estimated.

The Company considers evidence of impairment of receivables at both the individual and collective levels. All individually significant receivables are valued for the specific loss of value.

An impairment of a financial asset measured at amortized cost is calculated as the difference between the carrying amount and the present value of estimated future cash flows, discounted at the effective original interest rate of the financial asset. Losses and their reversals are recognized in profit or loss and reflected in an allowance account against receivables.

4.7.2       Non-financial assets

Assets under formation arising from onerous concession and concession rights and / or authorization to generate electricity, classified as intangible assets, are tested along with the other assets of that cash-generating unit.

Whenever there is a loss resulting from situations where an asset’s carrying value exceeds its recoverable value, defined as the greater between the asset’s value in use and its net selling price, this loss is recognized in profit or loss for the year.

For impairment assessment purposes, assets are grouped at the lowest levels for which there are separately identifiable cash flows (Cash Generating Units - CGU).

The amount of the impairment of non-financial assets is reviewed for the analysis of a possible reversal at the reporting date, in case of reversal of loss of prior years, this is recognized in current year's profit or loss. 

4.8      Provision

Provisions are recognized when, and only when: i) the Company has a present obligation (legal or constructive) resulting from a past event, ii) it is probable (i.e., more likely than not) that an outflow of resources embodying economic benefits will be required to settle the obligation, and iii) a reliable estimate can be made of the amount to settle the obligation.

The estimates of outcomes and financial impacts are determined by the Company's management judgment, supplemented by experience of similar transactions and, in some cases, by independent expert reports.

Social-environmental liabilities are recognized as the Company assumes formal obligations before regulatory agencies or becomes aware of potential risks related to socio-environmental issues, which may lead to cash disbursements that are deemed probable and that may be estimated. During the project implementation phase, the accrued amounts are recorded against property, plant and equipment (generation), construction cost (transmission) or intangible assets in progress (distribution). At the start of operations, all costs included in the Operating License, whose programs will be executed during the concession and the respective disbursement has not yet occurred, are measured and adjusted to present value according to the estimated cash flow of disbursements and recorded as social-environmental provisions in counterpart to the assets related to the project, being adjusted periodically.

Once the project enters commercial operation, all costs or expenses incurred with socio-environmental programs related to the project’s operation and maintenance licenses are analyzed according to their nature and recorded directly to profit or loss for the period.

4.9      Revenue recognition

Operating revenues are recognized when: (i) the revenue amount can be reliably measured; (ii) the costs incurred or to be incurred in the transaction are reliably measurable; (iii) it is likely that the economic benefits will be received by the Company; and (iv) the risks and rewards have been fully transferred to the buyer.

Revenue is measured at the fair value of the consideration received or receivable, less discounts and/or bonuses granted and charges on sales.

4.9.1       Unbilled revenues

Refers to revenues from electricity sales to final customers, electricity sales to distributors, use of the main distribution and transmission grid and telecommunication services, from the period between the last billing and the end of each month, by estimate based on the last measurement taken. 

4.9.2       Interest

Revenue from interest is recognized when it is probable that future economic benefits will flow to the Company and the revenue value can be reliably measured. Interest revenue is recognized at the straight-line basis and based on time and effective interest rate on outstanding principal amounts. The effective interest rate is the one that discounts exactly estimated future cash receipts calculated during the estimated life of the financial asset in relation to initial net book value of that asset.

4.10    Construction revenues and costs

Revenue related to construction services for infrastructure in the power transmission and distribution services, and gas distribution, are recognized using the stage of completion method.

Related costs are recognized in the income statement as construction cost.

Given that Copel DIS and Compagás outsource the construction of distribution infrastructure to unrelated parties and works are carried out over short periods, the construction margin to the power and gas distribution activities result in no significant amounts, resulting in the non-recognition of such margin.

The construction margin adopted for the transmission activity for the years 2017 and 2016 was 1.65%, and results from a calculation methodology which takes into account the respective business risk.

4.11    Power purchase and sales transactions in the Spot Market (Electric Energy Trading Chamber - CCEE)

Power purchase and sales transactions in CCEE are recorded on the accrual basis according to the information disclosed by this Trading Chamber or to estimates prepared by the Management of the subsidiaries when public information is not yet available.

4.12    Leases

Leases are classified as finance leases whenever the terms of the lease transfer substantially all the risks and rewards of ownership to the lessee. Other leases are classified as operating.

4.13    New standards that are not yet in effect

A number of new IFRS standards and amendments to the standards and interpretations were issued by the IASB and had not yet come into effect for the year ended December 31, 2017. Consequently, the Company and its subsidiaries has not adopted them in advance.

The new rules that may have an impact on the Company and its subsidiaries are mentioned below:

4.13.1     IFRS 9 - Financial Instruments

IFRS 9 is effective for the financial statements of an entity prepared in accordance with IFRS for annual periods beginning on or after January 1, 2018 and earlier application is permitted. 

This standard establishes new requirements for classification and measurement of financial assets and liabilities. Financial assets are classified into three categories: (i) measured at fair value through profit or loss; (ii) measured at amortized cost, based on the business model within which they are held and the characteristics of their contractual cash flows; and (iii) measured at fair value through other comprehensive income.

With regard to financial liabilities, the main alteration in relation to the requirements already set by IAS 39 defines that any change in fair value of a financial liability designated at fair value through profit or loss attributable to changes in the liability's credit risk to be stated in other comprehensive income and not in the statement of profit or loss, unless such recognition results in a mismatching in the statement of profit or loss.

In relation to the impairment of financial assets, IFRS 9 defines an expected credit loss model, as opposed to an incurred credit loss under IAS 39. The new model requires an entity to account for expected credit losses and changes in those expected credit losses at each reporting date to reflect changes in credit risk since initial recognition. In other words, it is no longer necessary for a credit event to have occurred before credit losses are recognized.

Regarding the modifications related to hedge accounting, IFRS 9 retains three types of mechanisms currently available in IAS 39. Under IFRS 9, greater flexibility has been introduced to the types of transactions that are eligible for hedge accounting, more specifically regarding the types of instruments that qualify as hedging instruments and the types of risk components of nonfinancial items eligible for hedge accounting.

In addition, the effectiveness test has been overhauled and replaced with the principle of an “economic relationship”. Retrospective assessment of hedge effectiveness is also no longer required and enhanced disclosure requirements about an entity’s risk management have also been introduced.

Based on the analysis of the financial assets and liabilities of Copel and its subsidiaries at 12.31.2017, considering the facts and circumstances existing on that date, the Company assessed the impact of IFRS 9 on the consolidated financial statements, as follows:

Classification and measurement

The Company assessed the classification and measurement of financial assets and, in accordance with the model for management of these assets, early identified the change in the classification of the instruments below. The Company’s management believes that the change in the classification will not significantly affect the measurement of items, thus with no effect on retained earnings.

Financial instrument	Actual classification (IAS 39)	New classification IFRS 9
Bonds and securities	Available for sale	Fair value through profit or loss
Collaterals and escrow accounts	Loans and receivables	Amortized cost
Trade accounts receivable	Loans and receivables	Amortized cost
CRC transferred to the State Government of Paraná	Loans and receivables	Amortized cost
Sectorial financial assets	Loans and receivables	Amortized cost
Accounts receivable related to the concession - transmission (amortizable)	Loans and receivables	Amortized cost
Accounts receivable related to the concession - transmission (indemnable)	Loans and receivables	Fair value through profit or loss
Accounts receivable related to the concession - bonus from the grant	Loans and receivables	Amortized cost
Accounts receivable related to the concession - distribution	Available for sale	Fair value through profit or loss
Accounts receivable related to the concession compensation	Available for sale	Fair value through profit or loss
State of Paraná - Government Programs	Loans and receivables	Amortized cost
Other temporary investments	Available for sale	Fair value through profit or loss

Impairment

IFRS 9 requires the Company’s management to carry out an assessment in light of twelve months or throughout the life of the financial asset and record the effects in case of indication of expected credit losses on financial assets.

The Company will apply the simplified approach and will record expected losses throughout the life of financial assets of trade accounts receivable. Based on the assessment made during 2017, the Company understands that the allowance for doubtful accounts (allowance for impairment of trade accounts receivable) should increase between R$25,000 and R$30,000, which will be recognized in the opening balance sheet in the retained earnings account on January 1, 2018, net of taxes.

The Company did not designate nor does it intend to designate financial liabilities as fair value through profit or loss, thus no impact is expected on the classification of financial liabilities, in accordance with the requirements of IFRS 9. 

Transition: The changes in accounting policies arising from the adoption of IFRS 9 are generally applied retrospectively. However, the Company will take advantage of the exemption set forth by item 7.2.15 of the standard, whereby it is authorized not to restate prior period’s comparative information in connection with the changes in classification and measurement of financial instruments.

Moreover, as the Company does not apply hedge accounting, Management concluded that there will not be impact on its financial statements as a result of the amendments to standard.

4.13.2     IFRS 15 - Clarifications to IFRS 15 Revenue from contracts with customers

IFRS 15 provides a single, straightforward model for accounting for contracts with customers, and when it comes into effect, it will supersede the current guide for revenue recognition provided in IAS 18 – Revenue and IAS 11- Construction contracts and related interpretations.

The standard establishes that an entity will recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard introduces a five-step model for revenue recognition: (i) Identify the contract with the customer; (ii) Identify the performance obligations in the contract; (iii) Determine the transaction price; (iv) Allocate the transaction price to the performance obligations in the contract; and (v) Recognize revenue when (or as) the entity satisfies a performance obligation.

Under IFRS 15, an entity recognizes revenue when (or as) the entity satisfies a performance obligation, i.e., when the "control" over the goods and services in a certain operation is transferred to the customer, and will establish a greater level of detail in the disclosures.

In addition to providing broader disclosures on revenue transactions, the Company does expect the application of IFRS 15 to have a significant effect on the equity and financial position and/or performance of its subsidiaries.

The Company’s subsidiaries recognize revenues from the following sources:

Electric power supply and delivery (generation, trading and distribution)

The Company recognizes revenue from electric power supply and delivery at fair value of consideration through the delivery of electric power to the customer. Billed revenue consists of the delivery of bills, evidencing the amount of consumption by customer in a given period, multiplied by the tariff in force, validated by Aneel. Additionally, the Company recognizes unbilled revenue for the period ranging from the last billing to the end of month, on an estimate basis, based on the last metering. 

In accordance with IFRS 15, the Company shall recognize revenue from a contract with the customer whenever the expected receipt is probable, taking into consideration the customer’s intention to pay. Should no receipt be expected, the Company may not recognize revenue upon billings, but instead upon receipt. Based on data available at December 31, 2017, the Company assessed customers with a long history of payment default that, for a number of reasons, did not have their power supply cut, and also the potential effects of IFRS 15, concluding that the impact is not material and that, in light of the Company’s policies, a provision for loss will be set up on such receivables and monthly monitored.

Use of the main distribution and transmission grid

The Company recognizes revenue from the distribution network service made available to captive and free consumers at fair value of consideration, according to the tariff in force and validated by ANEEL.

In the distribution segment, the Company should comply with certain continuity indicators, which will give rise to the calculation of compensation to the consumer, if exceeded. The individual continuity indicators are Individual Interruption Duration - DIC, Individual Interruption Frequency - FIC, Maximum Continuous Interruption Duration - DMIC and Individual Interruption Duration on a critical day - DICRI. They are currently recorded as operating expenses and, in accordance with the assessment, will from January 1, 2018 on be recorded as reducing the revenue from electric network availability. The company assessed that the amount that would be reclassified from operating expenses to revenue deduction amounts to nearly R$22,118, based on amounts of 2017, but without effects in the consolidated financial statements.

This group also includes revenue from operation and maintenance of infrastructure of services for availability of use of the transmission network, corresponding to a percentage of RAP billing. The Company recognizes revenue at fair value of consideration receivable when RAP billing is disclosed. Based on its assessment, the Company does not expect the application of IFRS 15 to have a significant impact on such revenue on its financial statements.

Sale of energy in the spot market - CCEE

The Company recognizes this revenue in accordance with the energy settled in the spot market for the Price of Settlement of Differences - PLD.

The Company assessed the potential effects of the application of IFRS 15 on revenue from sale of spot energy, concluding that there is no impact on its financial statements, except for the requirements of presentation and disclosure, which will be presented in further details beginning 2018.

Revenue from construction

Revenue from construction is recognized over the time based on the percentage of completion of the work at the end of each period and measured in the proportion of costs incurred in relation to total estimated costs of distribution and transmission concession agreements. 

The Company assessed the potential effects of the application of IFRS 15 on revenue from construction, concluding that there are no effects on its financial statements, except for the requirements for presentation and disclosure that will be presented in further details beginning 2018.

Results of sectorial financial assets and liabilities

The Company recognizes revenue from results of sectorial financial assets and liabilities in view of the variation between budget and actual value of non-manageable costs of Tranche A (Offsetting and Variation of Tranche A account - CVA) and other financial components. According to the contractual guarantee, residual amounts, if any, not passed on through tariff will be included in the calculation of compensation, as the concession ceases to exist. 

The Company assessed the potential effects of the application of IFRS 15 on revenue from result of sectorial financial assets and liabilities, concluding that there are no effects on its financial statements, except for the requirements for presentation and disclosure that will be presented in further details beginning 2018.

Revenue from telecommunications

Revenue from telecommunications comprises mainly Connectivity (multimedia communication service), Activation of Customers, Benefits Programs and IT and Communication Services (TIC), which are recognized at fair value of consideration over time.

Revenue from Connectivity is recognized through provision of high speed internet to the customer.

Revenue from Activation is recognized in a specific moment, should the customer opt for non-loyalty to the Connectivity plan. Should the customer opt for loyalty, a discount is given in the amount of provision of service during the plan, and revenue will be deferred over twelve months. The Company assessed that the adjustment of deferred revenue to be recognized in 2018 reaches R$2,961, based on agreements ruling at December 31, 2017.

Revenue from the Benefits Program arises from the availability of exclusive access by third party websites of digital contents by streaming, whose value is included in the connectivity plan. The Company concluded that there is no effect on the financial statements, except for the requirements for presentation and disclosure that will be presented in further details beginning 2018.

Revenue from IT and Communication Services (TIC) is recognized over time, in accordance with the number of hours worked or the fixed value per month in view of the contractual provisions.

The Company assessed the potential effects of the application of IFRS 15, concluding that there are no material effects on its financial statements, except for the requirements for presentation and disclosure that will be presented in further details beginning 2018. 

Piped gas distribution

The Company recognized revenue from sale of gas at fair value of consideration through the delivery of piped gas to the customer.

The Company assessed the potential effects of the application of IFRS 15 on revenue from sale of piped gas, concluding that there are no effects on its financial statements, except for the requirements for presentation and disclosure that will be presented in further details beginning 2018.

Other revenues

The Company has other sources of revenue from the concession of public services inherent to its segments.

The Company assessed the potential effects of the application of IFRS 15 on other revenues, concluding that there are no effects on its financial statements, except for the requirements for presentation and disclosure that will be presented in further details beginning 2018.

Transition

For the revenues impacted by the adoption of IFRS 15, the Company adopted the standard on the date of initial application as an adjustment to the opening balance in shareholders' equity, considering only the contracts that are not completed at the date of initial application, accordingly the Appendix C of IFRS 15, in its items C3(b) and C7.

4.13.3     IFRS 16 - Leases

Issued on January 13, 2016, establishes, in the lessee’s view, a new form for accounting for leases currently classified as operating leases, which are now recognized similarly to leases classified as finance leases. As regards the lessors, it virtually retains the requirements of IAS 17, including only some additional disclosure aspects.

IFRS 16 is effective for annual periods beginning or on after January 1, 2019, and its early adoption is permitted as long as the entities also early adopt IFRS 15 Revenues from contracts with customers. The Company is assessing the potential impacts of the adoption of this new standard.

4.13.4     IFRIC 22 - Foreign Currency Transactions and Advance Consideration

Issued on December 8, 2016, International Financial Reporting Interpretations Committee - IFRIC 22 deals with the exchange rate to be used in transactions that involve the consideration paid or received in advance in foreign exchange transactions.

This IFRIC is effective for annual periods beginning on or after January 1, 2018, and its early adoption is permitted. 

The transactions in foreign currency of the Company are currently restricted to debt instruments with international financial institutions, measured at fair value, and to the acquisition of energy from Itaipu. Since assets and liabilities measured at fair value are not within the scope of the IFRIC and that there are no advance payments on transactions with Itaipu, the Company estimates that IFRIC 22 will not have material impacts on its consolidated financial statements.

4.13.5     Amendments to IAS 40 - Investment Property

Issued on December 8, 2016, the amendments to IAS 40 clarify the requirements relating to transfers from or to investment properties. The amendments are effective for annual periods beginning on or after January 1, 2018, and its early adoption is permitted.

The Company has assessed the potential impacts of the adoption of IAS 40 and the conclusion is that there is no material impact on its financial statements.

4.13.6     Annual Improvements to IFRS 2014 - 2016 Cycle

Every year, IASB discusses and decides on the proposed improvements to IFRS as they arise during the period. Issued on December 8, 2016, the improvements deal with the following subjects:

i) amendments to IFRS 1 - excludes from the standard some exceptions existing for application in the transition period of the entities that are new IFRS adopters.

ii) amendments to IFRS 12 - clarifies the scope of the pronouncement, in respect of interest of entities in other entities that are classified as available for sale or discontinued operations in accordance with IFRS 5.

iii) amendments to IAS 28 - clarifies if an entity has an option of "investment for investment" to measure the investees at fair value in accordance with IAS 28 for a risk capital organization.

Based on a preliminary assessment of the amendments, the Company's management believes that the application of these amendments should not have material impact on the disclosures or amounts recognized in its consolidated financial statements in future periods.

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5. Cash and Cash Equivalents

12 Months Ended

Dec. 31, 2017

Cash and cash equivalents [abstract]

Cash and Cash Equivalents

	12.31.2017	12.31.2016
Cash and bank accounts	157,470	173,020
Financial investments with immediate liquidity	882,605	809,053
	1,040,075	982,073

These comprise cash on hand, deposits with banks and short-term highly liquid investments, which can be redeemed in cash within 90 days from the investment date. Temporary short-term investments are recorded at cost at the reporting date, plus earnings accrued. Cash and cash equivalents are subject to an insignificant risk of change in value.

Financial investments refer to Bank Deposit Certificates - CDBs and Repurchase Agreements, which are the sale of a security with the commitment of the seller (Bank) to repurchase it, and of the purchaser to resell it in the future. Investments are remunerated between 65% and 100% of the rate of change of the Interbank Deposit Certificate (Certificado de Depósito Interbancário - CDI).

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6. Bonds and Securities

12 Months Ended

Dec. 31, 2017

Bonds And Securities

Bonds and Securities

Category	Index	12.31.2017	12.31.2016 Restated	12.31.2015 Restated
Securities available for sale
Quotas in Funds	CDI	107,560	94,268	64,473
Bank Deposit Certificates - CDB	95.0% to 101% of CDI	57,192	50,811	45,996
Committed Operation	96.5% to 100% of CDI	47,052	56,512	48,085
Financial Treasury Bonds - LFT	Selic	687	1,475	2,623
		212,491	203,066	161,177
Securities held for trading
Quotas in Funds	98.1% of CDI	7,172	8,676	100,282
Committed Operation	Fixed rate	-	58,930	88,594
Financial Notes	105.38% of CDI	-	51,384	26,025
Time Deposits with Special Guarantee from the Credit Guarantee Fund (FGC) - DPGE	106.25% of CDI	-	4,785	4,515
National Treasury Bonds - LTN	Selic	-	3,378	2,563
Housing credit	-	-	1,390	2,316
Debentures	105.11% of CDI	-	129	157
Treasury	-	-	7	2
		7,172	128,679	224,454
		219,663	331,745	385,631
	Current	1,341	136,649	294,514
	Noncurrent	218,322	195,096	91,117
Interbank Deposit Certificate - CDI
Interest rate equivalent to the reference rate of the Special System for Settlement and Custody - Selic

Copel has securities that yield variable interest rates. The term of these securities ranges from 1 to 60 months from the end of the reporting period.

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7. Trade Accounts Receivables

12 Months Ended

Dec. 31, 2017

Trade and other receivables [abstract]

Trade Accounts Receivables

	Balances	Overdue	Overdue for	Total	Total
	falling due	up to 90 days	more than 90 days	12.31.2017	12.31.2016
Customers
Residential	308,315	190,376	14,126	512,817	447,345
Industrial	314,817	37,788	76,722	429,327	313,963
Commercial	257,733	56,316	26,533	340,582	267,647
Rural	55,626	19,965	4,940	80,531	68,611
Public Entities	40,358	9,476	5,992	55,826	64,581
Public lighting	37,590	81	13	37,684	28,991
Public service	37,667	1,279	834	39,780	34,391
Unbilled	410,086	-	-	410,086	377,498
Energy installments plan (7.1)	143,720	13,722	32,819	190,261	193,426
Low income subsidy - Eletrobras	14,435	-	-	14,435	12,128
Other receivables	74,762	16,442	66,407	157,611	159,051
	1,695,109	345,445	228,386	2,268,940	1,967,632
Concessionaires and  Permission holder
Energy supplies
Energy purchase agreements in the regulated market - CCEAR	69,413	694	6,406	76,513	116,516
Bilateral contracts	184,793	3,027	7,690	195,510	102,570
CCEE (7.2)	260,981	-	181,560	442,541	354,662
Unbilled	31,671	-	-	31,671	28,873
Quota system and Reimbursement to generators	10,020	49	1,282	11,351	17,415
	556,878	3,770	196,938	757,586	620,036
Charges from using transmission grid	151,204	3,120	7,696	162,020	104,831
Telecommunications	31,069	12,344	22,356	65,769	81,374
Gas distribution	37,195	2,037	10,605	49,837	69,934
Allowance for doubtful accounts (7.3)	(2,984)	(2,945)	(303,901)	(309,830)	(355,666)
	2,468,471	363,771	162,080	2,994,322	2,488,141
Current				2,733,240	2,217,355
Noncurrent				261,082	270,786

7.1      Energy installments plan

The trade accounts receivable renegotiated are discounted to present value, at December 31, 2017, taking into consideration the future value, the maturity dates, the dates of settlement and the discount rate ranging from 0.09% to 3.39% p.m.

7.2      Electricity Trading Chamber - CCEE

Of the balance presented, the main amount of R$230,902 is related to Copel GeT and R$142,872 to Copel DIS.

Of the balance of Copel GeT, R$49,342 were received up to the date of this publication. The remaining balance of R$181,560 derives from sale of energy to be reprocessed by CCEE for the period from January to May 2015, as a result of the request for exemption from responsibility of complying with trading contracts of Colíder Hydroelectric Power Plant for delivery of energy (Note 19.6), of which the contested portion there is a register of estimated losses for doubtful accounts of R$119,665. On March 14, 2017, ANEEL denied the Company's request for reconsideration of ANEEL Order No. 1,580/2016, which had maintained unaltered the implementation schedules and the energy supply schedules related to the plant. Considering that the plant's start-up schedule was impacted by acts of public authorities and unforeseeable or force majeure events occurred during the implementation of the project, the Company referred the matter to the court, succeeding in the total deferral of the request for the prepayment of guardianship in the ordinary share, with the preliminary effect in the reprocessing of the liquidation by the CCEE disclosed at the beginning of May 2018, referring to the jurisdiction in March 2018.

The balance of Copel DIS was fully received.

7.3      Allowance for doubtful accounts

Estimated losses on doubtful accounts, or Current expected credit loss – CECL (PECLD in Portuguese), are recognized in an amount considered sufficient by management to cover losses on accounts receivable from consumers and receivables, the recovery of which is considered improbable.

The consumers’ CECL is set up in view of the parameters recommended by ANEEL, based on the expected receivables from major debtors, on the analysis of large debts under receivership/bankruptcy, on receivables from household consumers overdue for more than 90 days, from business consumers overdue  for more than 180 days, and from industrial, rural, public power, public lighting and public service consumers overdue for more than 360 days, in addition to the experience regarding the history of actual losses.

	Balance as of		Reversal	Balance as of	Additions /	Reversal	Balance as of
	January 1, 2016	Additions	of write offs	December 31, 2016	(reversals)	of write offs	December 31, 2017
Customers
Residential	104,167	69,041	(106,706)	66,502	36,177	(80,147)	22,532
Industrial	42,176	45,552	(21,165)	66,563	26,265	(14,049)	78,779
Commercial	48,385	49,664	(30,974)	67,075	18,101	(25,901)	59,275
Rural	1,827	4,106	(2,803)	3,130	2,997	(3,396)	2,731
Public Entities	10,651	2,424	(94)	12,981	(3,833)	(4,313)	4,835
Public lighting	81	23	-	104	205	(269)	40
Public service	607	504	-	1,111	(653)	(439)	19
	207,894	171,314	(161,742)	217,466	79,259	(128,514)	168,211
Concessionaires and permission holder
CCEE (7.2)	119,665	-	-	119,665	-	-	119,665
concessionaires and permission holder	10,141	3,266	(330)	13,077	1,287	(175)	14,189
	129,806	3,266	(330)	132,742	1,287	(175)	133,854
Telecommunications	191	2,598	(2,255)	534	8,309	(7,332)	1,511
Gas distribution	1,795	3,209	(80)	4,924	1,433	(103)	6,254
	339,686	180,387	(164,407)	355,666	90,288	(136,124)	309,830

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8. CRC Transferred to the State Government of Paraná

12 Months Ended

Dec. 31, 2017

Crc Transferred To State Government Of Paran

CRC Transferred to the State Government of Paraná

By means of a fourth amendment dated January 21, 2005, the Company renegotiated with the State of Paraná the outstanding CRC (Account for Compensation of Income and Losses) balance as of December 31, 2004, in the amount of R$1,197,404, to be paid in 244 installments under the Price amortization system, adjusted according to the IGP-DI inflation index plus interest of 6.65% p.a., which are received monthly, with the first installment due on January 30, 2005 and the others due in subsequent and consecutive months.

The Paraná State Government requested the Novation of the Adjustment Term of CRC, which was approved by the Company’s Board of Directors on June 16, 2016, subject to the consent of the Department of the Treasury. The novation comprises: (i) no principal and interest payments in the period from April to December 2016, and (ii) no payment of principal and monthly payment of interest from January to December 2017. The other clauses were maintained, including the maintenance of the current indexes of correction and interest, thus not affecting the global net present value of referred agreement.

The Company’s management and the State of Paraná formalized on October 31, 2017 the fifth amendment.

The State of Paraná complied with the agreed terms and made monthly interest payments until December 2017. With the end of the grace period, in January 2018 there are remaining 88 monthly installments, which are being paid strictly under contracted conditions.

8.1      Changes in CRC

Balance as of		Monetary		Balance as of		Monetary		Balance as of
January 1, 2016	Interest	variations	Amortizations	December 31, 2016	Interest	variations	Amortizations	December 31, 2017
1,383,242	92,959	95,959	(49,425)	1,522,735	97,085	(6,373)	(97,085)	1,516,362
Current				-				167,109
Noncurrent				1,522,735				1,349,253

8.2      Maturity of noncurrent installments

2019	178,223
2020	190,076
2021	202,717
2022	216,198
2023	230,576
After 2023	331,463
	1,349,253

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9. Net Sectorial Financial Assets and Liabilities

12 Months Ended

Dec. 31, 2017

Net Sectorial Financial Assets And Liabilities

Net Sectorial Financial Assets and Liabilities

Net Sectorial Financial Assets and Liabilities refer to the Variance of Parcel “A” Costs (CVA) and other financial components relating to non-manageable costs incurred in the tariff cycle without adequate tariff coverage.

The CVA, comprised of the costs of power purchase, transmission costs and sector charges, and financial items, which correspond to overcontracting of energy, neutrality of charges, and other rights and obligations included in the tariff, are transferred entirely to the electricity tariff or covered in the manner defined by the Granting Authority, not affecting the distributor's annual result.

The asset or liability balances represent the positive and negative variances between the amounts projected in the tariff and actual amounts, adjusted using a monetary adjustment index. Annually, in the tariff adjustment/ review processes, they are ratified by ANEEL and transferred as components of the power tariff. Monthly, the amounts approved in previous tariff adjustment / review processes are amortized.

The balance as of 12.31.2017 is composed of the previous cycle (2017 tariff adjustment), under amortization, which represents the balance approved by ANEEL already contemplated in the tariff and by the cycle under constitution (2018 tariff adjustment and 2021 periodic tariff review), whose values will be ratified by ANEEL in the next tariff events.

9.1      Composition of net sectorial financial assets and liabilities balances per tariff cycle

		12.31.2017
	Current	Noncurrent
Sectorial financial assets - Electricity rate adjustment recoverable 2018
Portion A
Electricity purchased for resale - CVA Energ	333,412	333,412
Electricity purchased for resale - Itaipu	250,851	250,851
Transport of energy using the transmission system - basic grid	18,056	18,056
Transport of energy purchased from Itaipu	5,063	5,063
System Service Charges - ESS	(211,735)	(211,735)
Energy Development Account - CDE	(28,800)	(28,800)
Proinfa	(33)	(33)
Other financial components
Neutrality	33,319	33,319
Overcontracting	(112,137)	(112,137)
Hydrological risk	(93,964)	(93,964)
Tariff refunds	(21,302)	(21,302)
CVA Angra III Adjustment	(1,121)	(1,121)
	171,609	171,609

		12.31.2017		12.31.2016
	Current	Noncurrent	Current	Noncurrent
Sectorial financial liabilities - Electricity rate adjustment recoverable 2016
Portion A
Electricity purchased for resale - CVA Energ	-	-	(318,905)	-
ESS	-	-	(65,712)	-
Transport of energy using the transmission system - basic grid	-	-	(67)	-
Electricity purchased for resale - Itaipu	-	-	354,651	-
CDE	-	-	146,005	-
Proinfa	-	-	15,179	-
Transport of energy purchased from Itaipu	-	-	3,759	-
Other financial components
Extraordinary Tariff Review	-	-	(257,353)	-
Financial exposure	-	-	(16,250)	-
Overcontracting	-	-	(4,794)	-
Neutrality	-	-	40,564	-
Other	-	-	149	-
	-	-	(102,774)	-
Sectorial financial liabilities - Electricity rate adjustment recoverable 2017
Portion A
Electricity purchased for resale - CVA Energ	(168,939)	-	(108,610)	(108,610)
ESS	(167,938)	-	(103,853)	(103,853)
CDE	(84,293)	-	(37,697)	(37,697)
Proinfa	(5,122)	-	1,057	1,057
Electricity purchased for resale - Itaipu	36,002	-	34,717	34,717
Transport of energy using the transmission system - basic grid	11,127	-	4,239	4,239
Transport of energy purchased from Itaipu	2,797	-	1,972	1,972
Other financial components
Tariff refunds	(12,470)	-	-	-
Overcontracting	87,949	-	80,482	80,482
Neutrality	54,609	-	75,206	75,206
CVA Angra III Adjustment	50,435	-	-	-
Other	3,024	-	-	-
	(192,819)	-	(52,487)	(52,487)
Sectorial financial liabilities - Tariff Review 2021
Financial components
Tariff refunds	-	(90,700)	-	(71,244)
	-	(90,700)	-	(71,244)
	(192,819)	(90,700)	(155,261)	(123,731)

9.2    Changes in net sectorial financial assets and liabilities

	Balance as of January 1, 2017	Operating revenues		Financial results	Rate Flags	Balance as of December 31, 2017
		Constitution	Amortization	Updating
Portion A
Electricity purchased for resale - Itaipu (9.2.1)	424,085	495,889	(420,054)	37,784	-	537,704
Electricity purchased for resale - CVA Energ (9.2.2)	(536,125)	937,324	517,751	(1,845)	(419,220)	497,885
Transport of energy using the transmission system - basic grid	8,411	50,426	(12,275)	677	-	47,239
Transport of energy purchased from Itaipu	7,703	11,067	(7,155)	1,308	-	12,923
ESS (9.2.3)	(273,418)	(529,932)	262,568	(50,626)	-	(591,408)
CDE (9.2.4)	70,611	(158,514)	(60,149)	6,159	-	(141,893)
Proinfa	17,293	(14,677)	(10,423)	2,619	-	(5,188)
Other financial components
Neutrality (9.2.5)	190,976	28,694	(99,593)	1,170	-	121,247
CVA Angra III Adjustment	-	97,426	(54,516)	5,283	-	48,193
Hydrological risk (9.2.6)	-	(183,728)	-	(4,200)	-	(187,928)
Tariff refunds (9.2.7)	(71,244)	(78,254)	13,479	(9,755)	-	(145,774)
Overcontracting (9.2.8)	156,170	(203,797)	(90,272)	1,574	-	(136,325)
Extraordinary Tariff Review	(257,353)	-	257,353	-	-	-
Financial exposure	(16,250)	-	16,250	-	-	-
Others	149	5,570	(3,418)	723	-	3,024
	(278,992)	457,494	309,546	(9,129)	(419,220)	59,699
Current assets	-					171,609
Noncurrent assets	-					171,609
Current liabilities	(155,261)					(192,819)
Noncurrent liabilities	(123,731)					(90,700)
	Balance as of January 1, 2016	Operating revenues		Financial results		Balance as of December 31, 2016
		Constitution	Amortization	Updating	Rate Flags
Portion A
Electricity purchased for resale - Itaipu (9.2.1)	699,408	61,905	(409,894)	72,666	-	424,085
Electricity purchased for resale - CVA Energ (9.2.2)	(14,865)	(255,085)	(37,860)	(39,710)	(188,605)	(536,125)
Transport of energy using the transmission system - basic grid	77,011	(271)	(74,168)	5,839	-	8,411
Transport of energy purchased from Itaipu	7,723	6,340	(7,388)	1,028	-	7,703
ESS (9.2.3)	(339,154)	(124,737)	292,804	(32,157)	(70,174)	(273,418)
CDE (9.2.4)	633,112	(249,476)	(350,600)	37,575	-	70,611
Proinfa	(1,265)	32,382	(16,271)	2,447	-	17,293
Other financial components
Neutrality (9.2.5)	64,644	154,607	(35,958)	7,683	-	190,976
Tariff refunds (9.2.7)	-	(66,043)	-	(5,201)	-	(71,244)
Overcontracting (9.2.8)	120,776	115,791	(73,595)	(6,802)	-	156,170
Extraordinary Tariff Review	(708,609)	21,541	457,942	(28,227)	-	(257,353)
Financial exposure	18,714	(42,000)	7,643	(607)	-	(16,250)
Deferral IRT	467,627	-	(467,627)	-	-	-
Preliminary injunctions CDE	20,456	(19,808)	-	(648)	-	-
Others	84	409	(245)	(99)	-	149
	1,045,662	(364,445)	(715,217)	13,787	(258,779)	(278,992)
Current assets	910,759					-
Noncurrent assets	134,903					-
Current liabilities	-					(155,261)
Noncurrent liabilities	-					(123,731)

9.2.1       Electricity purchased for resale - Itaipu

Power output from the Itaipu hydropower station is sold as quotas to utilities companies in the South, Southeast and Midwest in proportion to their markets. The amount constituted in 2017 refers to the change in the power purchase cost and foreign exchange variance, in relation to that predicted in the last tariff adjustment.

9.2.2       Electricity purchased for resale - CVA Energ

The balance reflects the difference between the average price of payment, related to the effects of contracting for availability (ECD), Angra and Cotas, and the average price of tariff coverage.

The CVA Energ account was offset by funds received from the Rate Tier Pooling Account (CCRBT) or Tariff Flags Account.

On January 26, 2016, ANEEL approved Normative Resolution No. 700/2016, which deals with the methodology for cases of positive balances of the Tariff Flags Account, which provides that the surplus of flags is allocated in the distributor, to be passed on to customers in the subsequent tariff processes, and may be offset in future calculations of the Tariff Flags Account, until the next tariff adjustment.

9.2.3       System Service Charges - ESS

Consist in the costs associated to thermal power dispatching for the maintenance of the system reliability and stability and whose pricing was not considered in the calculation of the PLD. This amount is paid by all agents with consumption measurement registered on the CCEE, in the proportion of the consumption subject to payment of this charge.

These charges include the refund to generation agents of the operation restriction costs, provision of ancillary services, and for reasons of energy security.

9.2.4       Energy Development Account - CDE

The balance of CDE in 2017 is the result of the lower amount of monthly payment quotas, except in this case the CDE discounts resulting from preliminary injunctions, ratified by ANEEL (Note 32.5.1), in relation to the regulatory quota in the electricity tariff.

9.2.5       Neutrality

Refers to the estimated recoverable portion of sector charges not covered by the current tariff (billed revenue) due to the decline in consumption during the period. Neutrality is assured for charges, energy, transport, financial components and unrecoverable revenues. 

9.2.6       Hydrological risk

In the tariff adjustment of Copel DIS the coverage of the hydrological risks associated with plants committed to Contract of Quotas of Assured Power - CCGF for the Itaipu plant and hydropower plants whose energy was contracted within the Regulated Contracting Environment - ACR and that signed the Risk Renegotiation Term in conformity with Law 13,203/2015.

The estimated hydrological risk defined in the tariff review will be reversed in the subsequent tariff review, adjusted at the Selic rate.

9.2.7       Tariff refunds

ANEEL, by means of Order No. 245 of January 28, 2016, in line with the Tariff Regulation Procedures - Proret, sub-module 2.1 - General Procedures, determined that the new amounts resulting from excess demand and surplus of reagents previously recorded as special obligations should be accounted for as of January 1, 2016 as sector financial liabilities, net of taxes levied, of the regulatory percentage of 3.5% of revenue, referring to the excess demand in the transmission grid, and of the unrecoverable revenues, applying the regulatory percentage associated with the industrial consumption class.

9.2.8       Overcontracting

Corresponds to the cost of acquisition of the amount of energy overcontracting in relation to the annual supply charge, as well as the energy cost related to spot market exposure. The balance results from the sale of energy surpluses on the spot market at a price (PLD) higher than the mix of coverage.

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10. Accounts Receivable Related to the Concession

12 Months Ended

Dec. 31, 2017

Accounts Receivable Related To Concession

Accounts Receivable Related to the Concession

	12.31.2017	12.31.2016
Distribution concession agreement (10.1)	684,206	614,806
Bonus from the grant of concession agreements under the quota system (10.2)	606,479	586,706
Transmission concession agreements (10.3)	1,497,399	1,342,055
Remeasurement of RBSE financial assets (10.4)	1,418,370	1,186,985
Concession agreement - gas distribution (10.5)	303,668	83,378
	4,510,122	3,813,930
Current	149,744	65,595
Noncurrent	4,360,378	3,748,335

 10.1    Distribution concession agreement

Balance as of January 1, 2016	424,140
Transfers from intangible assets (Note 20.1)	58,970
Transfers from investments	12
Fair value recognition	131,738
Loss on disposal	(54)
Balance as of December 31, 2016	614,806
Donations and grants received	76
Transfers from intangible assets (Note 20.1)	56,853
Transfers to other receivables (assets held for disposal)	(3,711)
Fair value recognition	16,199
Loss on disposal	(17)
Balance as of December 31, 2017	684,206

On December 9, 2015, the Company signed the Fifth Amendment to Concession Agreement No. 46/1999, extending the concession period to July 7, 2045, in accordance with the Decision of the Ministry of Mines and Energy of November 9, 2015, based on Law No. 12,783/2013, Decree No. 7,805/2012 and Decree No. 8,461/2015.

Accounts Receivable Related to the Concession are measured at fair value and their collection is assured by the Granting Authority through an indemnity upon the reversal of these assets at the end of the concession period.

As a result of the positive result of the tariff review, the amount of R$104,239 was recognized in 2016, and in 2017 the amount of R$785 (complementarily to the report of the 4^th Cycle) which, in addition to the application of the IPCA on the armored base, starting 2016 allowed the recognition of fair value of R$131,738 in 2016 and R$16,199 in 2017.

10.2    Bonus from the grant of concession agreements under the quota system

	Total
Balance as of January 1, 2016	-
Bonus from the grant recognition	574,827
Transfers to electricity grid use charges - customers	(84,904)
Interest (Note 32.2)	96,783
Balance as of December 31, 2016	586,706
Transfers to electricity grid use charges - customers	(62,387)
Interest (Note 32.2)	82,160
Balance as of December 31, 2017	606,479

On January 5, 2016, Copel GeT entered into a 30-year concession agreement of HPP GPS, in accordance with Law No. 12,783/2013, with payment of the Bonus from the Grant - BO to the Granting Authority, amounting to R$574,827, as per ANEEL Invitation to Bid 12/2015.

The electric energy in 2016 was fully sold to the Regulated Contracting Environment - ACR under the Assured Power Quota System - CGF or “quota regime” and, as from 2017 to the end of the concession, in the proportion of 70% of the power on the ACR and 30% on the free environment - ACL.

The amount of the bonus for the grant was recognized as a financial asset due to the Copel GeT’s unconditional right to receive the amount paid with inflation adjustment based on IPCA and interest during the concession period.

10.3    Transmission concession agreement

Balance as of January 1, 2016	929,835
Transfers to electricity grid use charges - customers	(53,851)
Transfers to property, plant and equipment	(5,066)
Transfers to intangible	(150)
Transfers from recognition of RBSE appraisal report adjustment (10.4)	(61,760)
Remuneration	98,780
Reversal of estimated losses	29,025
Construction income	405,242
Balance as of December 31, 2016	1,342,055
Transfers to electricity grid use charges - customers	(81,497)
Transfers to property, plant and equipment	(29,264)
Remuneration	129,769
Construction income	136,336
Balance as of December 31, 2017	1,497,399

10.4    Remeasurement of RBSE assets

Balance as of January 1, 2016	-
Gain on remeasurement of the cash flow from the RBSE assets (Note 32.3)	809,639
Transfer from accounts receivable related to the concession compensation (Note 11)	160,217
Transfers from property, plant and equipment	155,369
Transfers from recognition of RBSE appraisal report adjustment (10.3)	61,760
Balance as of December 31, 2016	1,186,985
Gain on the cash flow from the RBSE assets (Note 32.3)	178,141
Increase in the estimated amount due to the approval of the report on RBSE assets (Note 32.3)	183,015
Transfers to electricity grid use charges - customers	(129,771)
Balance as of December 31, 2017	1,418,370

Copel GeT extended the concession agreement 060/2001, pursuant to Law No. 12,783/2013, and recognized receivables related to the electricity transmission assets of the Existing Basic Network System (RBSE) and the connecting facilities and Other Transmission Facilities (RPC) existing in May 2000 and not yet depreciated or amortized.

On April 20, 2016, MME Ordinance No. 120 was published, determining that the amounts of assets not yet depreciated and/or amortized, shall comprise the Regulatory Remuneration Base (BRR) for electricity transmission concessionaires as of the 2017 tariff review process, in order to define the Annual Permitted Revenue (APR). The Ordinance addressed issues related to updating, remunerating and period for receiving the amounts, which are regulated by ANEEL Normative Resolution No. 762/2017, by means of Public Hearing 068/2016.

On April 12, 2017, ANEEL issued Technical Note No. 61/2017 - SFF, which concluded the audit of the assets appraisal report and recognized the amount of R$667,637 as the net value of the assets at December 31, 2012. ANEEL’s board approved the inspection results on May 9, 2017, with a disallowance of R$214,663 in relation to the amount originally requested of R$882,300, the main disallowance is related to assets of Substation SF6 of Salto Caxias.

Moreover, on June 27, 2017 ANEEL published Resolution No. 2,258 establishing the Annual Permitted Revenue (RAP), for the 2017/2018 tariff cycle, considering a court decision on the injunction of April 11, 2017 related to a lawsuit filed by three business associations, which determines the deduction of the “compensation”, provided for in article 15, paragraph 2 of Law 12,783/2013.

The compensation being challenged in court, related to the cost of equity calculated for the RBSE assets from January 2013 to June 2017 temporarily reduced the RAP of this cycle from R$132,993 to R$121,267, and the amount deducted from the RAP by ANEEL in the eight tariff cycles is R$201,795.

Based on the opinion of its legal counsel, the Company understands that this is a provisional decision and is not against Copel GeT’s right to receive the amounts related to RSBE assets, which are guaranteed by Law. Therefore, the receivables related to the compensation by the cost of equity considered in the receipt flow of this asset are recorded in noncurrent assets.

The remeasurement of RBSE asset base at December 31, 2017 totals R$1,418,370, already considering the amortization for the RAP received, and the changes in the periods were recognized in operating income.

10.5    Concession agreement - gas distribution

Balance as of January 1, 2016	13,638
Transfer from intangible assets	68,737
Fair value recognition	1,003
Balance as of December 31, 2016	83,378
Reclassified from intangible assets (2.1.1)	154,800
Transfer from intangible assets	24,609
Fair value recognition	40,881
Balance as of December 31, 2017	303,668

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11. Accounts Receivable Related to the Concession Compensation

12 Months Ended

Dec. 31, 2017

Accounts Receivable Related To Concession Compensation

Accounts Receivable Related to the Concession Compensation

The balance refers to generation assets and as a result of the expiry of the Rio dos Patos SPP, GPS and Mourão I HPP concessions. Copel GeT depreciated the plants up to the expiry dates of the concessions, and the remaining balance was reclassified to Accounts Receivable Related to Concession Compensation. Although the Granting Authority has not yet disclosed the means of remunerating these assets and there are uncertainties as to the approval of the investments made, Management believes that compensation for these assets indicates the recoverability of the recorded balance, based on the compensation methodology determined by ANEEL.

The variation in the remeasurement of the cash flow from these assets has a corresponding entry in other operating income, and was reflected in the income for 2017 in the amount of R$341 (R$8,137 in 2016).

Copel GeT submitted to ANEEL, in a timely manner, its interest in receiving the indemnifiable amount. Proof of the investments made was formalized with the regulatory agency on December 17, 2015. The new replacement value methodology was used to prepare the information, as defined in ANEEL Normative Resolution No. 596/2013.

11.1    Changes in accounts receivable related to concession compensation

Balance as of January 1, 2016	219,556
Transfer to accounts receivable related to the concession (Note 10.4)	(160,217)
Gain on remeasurement of the cash flow	8,137
(-) Impairment	(75)
Balance as of December 31, 2016	67,401
Gain on remeasurement of the cash flow	341
Reversal of impairment	1,117
Balance as of December 31, 2017	68,859

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12. Other Receivables

12 Months Ended

Dec. 31, 2017

Other Receivables

Other Receivables

	12.31.2017	12.31.2016
Services in progress (a)	141,959	136,085
CDE Transfer (12.1)	136,559	45,929
Credits on sales and purchases of gas (12.2)	77,279	28,313
Decommissioning in progress	44,451	43,602
Advance payments to suppliers (b)	29,016	16,493
Advance payments to employees	25,928	25,916
Advance for severance estate	19,230	11,050
Other receivables	84,345	73,096
	558,767	380,484
Current	409,351	306,933
Noncurrent	149,416	73,551
(a) This item refers to services currently in progress within the Company, most of which are related to the Research and Development
and Energy Efficiency programs, which upon conclusion are offset against the respective liability recorded for this purpose.
(b) Advances to suppliers provided on contractual clauses.

12.1    CDE Transfer

One of the main purpose of the CDE is to provide funds to subsidize discounts applied to tariffs for use of power distribution systems (Note 32.5.1).

The amount transferred to Copel DIS related to discounts on tariffs applicable to users of the public service of electricity distribution between June 2016 and May 2017, ratified by ANEEL Resolution 2,096/2016, was R$25,505 per month. This amount was changed to R$49,304 per month by Resolution 2,255 of June 20, 2017, which ratified the result of Copel DIS’s Annual Tariff Adjustment in 2017, for the period from June 2017 to May 2018. 

12.2    Credits on sales and purchases of gas - Compagás

This balance refers to the gas acquisition contract with Petrobras, relating to the acquisition of contracted and guaranteed volumes, higher than those actually withdrawn and used, and contains a future compensation clause. Compagás has the right to withdraw the gas in subsequent months, and can compensate the volume contracted and not consumed. According to the contractual provisions and consumption perspectives, derived from the review of the projects and scenarios for the next years, Compagás estimates to fully offset the amounts paid in the course of its operation. Should the concession be early terminated for any reason, the agreement with Petrobras sets forth the right for sale of this asset. The expiry date of the concession is in discussion with the Concession Grantor, as described in Note 2.1.1.

In 2017, based on the new conditions for delivery and perspectives of consumption by the market, the Company reversed the accrued impairment in full for R$123,586 (Note 33.4).

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13. Taxes

12 Months Ended

Dec. 31, 2017

Taxes Abstract

Taxes

13.1    Income tax and social contribution

	12.31.2017	12.31.2016
Current assets
IR and CSLL paid in advance	937,663	765,150
IR and CSLL to be offset against liability	(435,978)	(576,198)
	501,685	188,952
Noncurrent assets
IR and CSLL paid in advance	176,480	169,967
	176,480	169,967
Current liabilities
IR and CSLL due	362,307	547,992
IR and CSLL to be offset against asset	(275,997)	(506,538)
	86,310	41,454

The taxation on profit comprises the income tax and social contribution calculated based on the taxable profits (adjusted profit) of each taxable entity at the applicable rates according to prevailing legislation, 15%, plus 10% on the amount exceeding R$240 per year, for income tax and 9% for social contribution. 

Income tax and social contribution losses can be offset against future taxable profits, considering the limit of 30% of the taxable profit for the period, and can be carried forward indefinitely.

13.2    Deferred income tax and social contribution

The Company, based on its profitability history and the expectation of generating future taxable profits, based on its internal projections prepared for reasonable periods of time for its business, sets up a deferred tax asset on temporary differences between the tax bases.

The deferred income tax and social contribution are recognized on temporary differences between the carrying amounts of assets and liabilities in the financial statements and the corresponding tax bases used for tax calculation purposes to the extent that it is probable that there will be sufficient taxable profits against which the temporary differences can be utilized and the tax losses can be offset.

Deferred tax assets and liabilities may be netted if there is a legal right to offset the current tax assets and liabilities and they relate to the same taxing authority.

13.2.1 Changes in deferred income tax and social contribution

	Balance as of January 1, 2016	Recognized in income	Recognized in other comprehensive income	Balance as of December 31, 2016 Restated	Recognized in income	Recognized in other comprehensive income	Balance as of December 31, 2017
Noncurrent assets
Provisions for legal claims	456,316	(17,778)	-	438,538	75,820	-	514,358
Post-employment benefits	201,260	28,634	30,174	260,068	16,716	16,827	293,611
Impairment of assets	252,026	37,591	-	289,617	20,944	-	310,561
Research and development and energy efficiency programs	116,671	25,608	-	142,279	14,046	-	156,325
Provision for energy purchases	184,471	(69,214)	-	115,257	14,620	-	129,877
Allowance for doubtful accounts	125,941	3,697	-	129,638	(16,258)	-	113,380
Tax losses and negative tax basis	6,050	45,063	-	51,113	59,545	-	110,658
Social security contributions - injunction on judicial deposit	36,758	17,992	-	54,750	6,106	-	60,856
Amortization - concession	39,539	4,592	-	44,131	4,591	-	48,722
Concession contracts	38,009	(11,803)	-	26,206	(1,300)	-	24,906
Provision for tax losses	17,426	5,750	-	23,176	739	-	23,915
Provision for profit sharing	25,825	(4,494)	-	21,331	939	-	22,270
Financial instruments	6,316	6,607	-	12,923	2,795	-	15,718
Others	95,875	(4,538)	-	91,337	(33,878)	-	57,459
	1,602,483	67,707	30,174	1,700,364	165,425	16,827	1,882,616
(-) Noncurrent liabilities
Concession contracts	91,359	349,163	-	440,522	95,204	-	535,726
Deemed cost	539,190	(52,395)	-	486,795	(36,911)	-	449,884
Escrow deposits monetary variation	-	62,538	-	62,538	(7,210)	-	55,328
Transaction cost on borrowings and debentures	7,768	1,874	-	9,642	11,896	-	21,538
Deferment of capital gains	11,320	-	-	11,320	-	-	11,320
Capitalization of financial charges	5,357	-	-	5,357	-	-	5,357
Result from the change in the
investment valuation method	-	17,717	-	17,717	(17,717)	-	-
Others	410,141	(380,822)	1,229	30,548	14,906	(853)	44,601
	1,065,135	(1,925)	1,229	1,064,439	60,168	(853)	1,123,754
Net	537,348	69,632	28,945	635,925	105,257	17,680	758,862
Assets presented in the Statement of Financial Position	537,562			814,355			915,492
Liabilities presented in the Statement of Financial Position	(214)			(178,430)			(156,630)

13.2.2     Realization of deferred tax assets

The realization of deferred taxes will occur according to the tax realization of the tax base. The criteria designed for realization of the main items are:

- Amounts set up on post-employment benefits, calculated based on the actuarial provision determined according to an actuarial valuation prepared annually by an independent actuary, will be realized according to the expenses incurred;

- Amounts set up on the provisions for litigation will be realized according to court decisions;

- Amounts set up on the provision for impairment of assets will be realized through the amortization and / or depreciation of the impaired asset;

- Amounts set up on the provision for purchase of energy will be realized in the immediately following period by the recording of the tax document of the purchase;

- Amounts set up on the provisions for R&D and PEE will be realized through the expenses incurred in the projects carried out;

- The other amounts set up will be realized according to the tax realization of each of the tax bases. On April 12, 2018, the Company’s Supervisory Board examined and the Board of Directors approved the technical study which points out to the realization of deferred taxes.

The projected realization of the deferred tax credits is shown below:

	Assets	Liabilities
2018	482,107	(82,039)
2019	268,072	(105,308)
2020	185,597	(71,167)
2021	115,637	(69,403)
2022	80,570	(70,448)
2023 to 2025	193,845	(189,305)
2026 to 2028	556,788	(536,084)
	1,882,616	(1,123,754)

13.2.3     Unrecognized tax credits

As of December 31, 2017, UEG Araucária did not recognize income tax and social contribution credits on tax loss carryforwards and negative bases in the amount of R$23,592 because there is at present no reasonable assurance of generation of future taxable profits sufficient to absorb these assets.

13.3    Other taxes recoverable and other tax obligations

	12.31.2017	12.31.2016
Current assets
Recoverable ICMS (VAT)	68,773	62,934
Recoverable PIS/Pasep and Cofins taxes	133,090	52,240
PIS/Pasep and Cofins to be offset against liabilities	(4,202)	(47,810)
Other recoverable taxes	571	567
	198,232	67,931
Noncurrent assets
Recoverable ICMS (VAT)	36,740	35,659
PIS/Pasep and Cofins taxes	46,858	62,113
Other recoverable taxes	33,376	33,336
	116,974	131,108
Current liabilities
ICMS (VAT) payable	151,928	113,793
PIS/Pasep and Cofins payable	138,797	136,437
PIS/Pasep and Cofins to be offset against assets	(121,165)	(87,629)
IRRF on JSCP	97,065	90,147
IRRF on JSCP to be offset against IR and CSLL assets	(43,018)	(29,841)
Special Tax Regularization Program - Pert (13.3.1)	45,108	-
Ordinary financing of taxes with the federal tax authorities	63,791	59,558
Other taxes	12,981	12,529
	345,487	294,994
Noncurrent liabilities
Social security contributions - injunction on judicial deposit	179,373	161,336
Pert (13.3.1)	488,563	-
Ordinary financing of taxes with the federal tax authorities	85,054	138,969
TCFRH (a)	53,349	-
Other taxes	3,237	2,841
	809,576	303,146
(a) Fee for Control, Monitoring and Inspection of Activities of Exploitation and Use of Water Resources

Sales and services revenues are subject to value-added tax (Imposto sobre Circulação de Mercadorias e Serviços or ICMS, in Portuguese) and service tax (Imposto sobre Serviços or ISS, in Portuguese), at the applicable rates, and to the PIS (Social Integration Program) and COFINS (Contribution for Social Security Funding).

Credits resulting from non-cumulative PIS and COFINS charges are accounted for deducting the operating costs in the statement of income.

Credits arising from non-cumulative ICMS, PIS and COFINS related to the purchase of assets are presented deducting the acquisition cost of these assets.

Prepayments or amounts that can be offset are presented in current and noncurrent assets, according to their expected realization.

13.3.1     Special Tax Regularization Program - Pert

Of the total R$533,671 recognized, R$532,644 are related to the balance of Copel DIS.

In June 2016, the Brazilian Federal Revenue Office - RFB issued an understanding through Private Letter Ruling Cosit No. 101/2016, providing guidance that the CVA, currently classified as Sectorial Financial Assets and Liabilities, should be realized when it was recorded (accrual basis) and not through transfer to tariffs (billing basis). According to the RFB, this understanding is based on the signing of the amendment to the concession agreement in December 2014, which currently assures that any residual balance of Sectorial Financial Assets and Liabilities will be indemnified at the end of the concession.

In this context, due to the RFB’s position, which produces effects since December 2014, the Company, which taxed the CVA operations on a billing basis, assessed the benefits offered by the Special Tax Regularization Program - Pert, established by Provisional Measure - MP No., 783/2017 and regulated by Normative Instruction - IN No. 1711/2017, as well as the effect on its financial results and cash flow, decided to join the program in August 2017, thus changing the taxation regime from CVA to accrual basis.

Based on this decision, Copel DIS rectified all accessory obligations from December 2014 to July 2017.

In October 2017, Law 13,496/2017 was enacted as a result of Provisional Measure 783/2017 passed into law, which modified penalty from 40% to 50% and maintained interest rate cut at 80%.

The underpayments made in the period from December 2014 to March 2017 were included in the Pert, with a declaration to the RFB of a debit of R$557,365 (principal amount), relating to PIS, Cofins, IRPJ and CSLL. Considering the benefits of reduction of fine and interest applied on the remaining balance, after payment of 20% of the value of the consolidated debt, total amount adjusted for inflation through August 2017, program joining date, was R$685,904.

				Consolidated debt	Reduction of fine	Debt balance
Tax	Principal	Fine	Interest	before joining Pert  (1)	and interest  - Pert  (2)	(1) - (2)
PIS	29,432	5,886	8,612	43,930	7,866	36,064
Cofins	135,614	27,123	39,678	202,415	36,242	166,173
IRPJ	286,528	57,306	89,814	433,648	80,404	353,244
CSLL	105,791	21,158	33,159	160,108	29,685	130,423
	557,365	111,473	171,263	840,101	154,197	685,904

The payment of the taxes included in the Pert is made as follows:

·         Cash payment of 20% of the debit (without the reductions provided for in the Pert), in 5 installments of R$33,604, payable from August 2017. From September 2017, this amount started to be adjusted for inflation at the Selic rate.

·         Beginning in January 2018, the payment of the debt balance starts, in 145 installments of R$3,572. The amount of the installment will be adjusted for inflation at the Selic rate.

Thus, the benefits earned by the Company for joining the program totaled R$154,197 relating to reduction of fine and interest.

Regarding overpayments made in the period from December 2014 to July 2017, considering the change of the taxation regime from CVA to the accrual basis, pursuant to Private Letter Ruling Cosit No. 101/2016, Copel DIS declared to RFB credits relating to PIS, Cofins, IRPJ and CSLL, as shown in the table below:

Tax	Principal	Interest	Total
PIS	40,379	6,716	47,095
Cofins	185,134	30,803	215,937
IRPJ	369,900	50,219	420,119
CSLL	164,996	23,310	188,306
	760,409	111,048	871,457

The amounts of these credits have been used for offsets of federal taxes and their balance will be adjusted for inflation monthly by the Selic rate. 

13.4    Reconciliation of provision for income tax (IRPJ) and social contribution (CSLL) 

	12.31.2017	12.31.2016 Restated	12.31.2015 Restated
Income before IRPJ and CSLL	1,392,941	1,394,162	1,693,794
IRPJ and CSLL (34%)	(473,600)	(474,015)	(575,890)
Tax effects on:
Equity in income	36,555	66,899	21,882
Interest on own capital	90,440	96,202	67,320
Dividends	497	838	572
Non deductible expenses	(26,292)	(11,624)	(13,706)
Tax incentives	14,973	16,567	18,757
Unrecognized income and social contribution tax loss carry-forwards	(5,645)	-	-
Setting up and/or offset of income tax and social contribution losses of prior years	90,804	-	(909)
Difference between the calculation bases of deemed profit and taxable profit	(19,680)	(114,149)	(15,302)
Others	17,262	(100,408)	(34,953)
Current IRPJ and CSLL	(379,943)	(589,322)	(698,023)
Deferred IRPJ and CSLL	105,257	69,632	165,794
Effective rate - %	19.7%	37.3%	31.4%

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14. Prepaid Expenses

12 Months Ended

Dec. 31, 2017

Prepaid Expenses

Prepaid Expenses

	12.31.2017	12.31.2016
Risk premium - GSF renegotiation (14.1)	28,033	40,909
Others	24,518	23,770
	52,551	64,679
Current	39,867	39,096
Noncurrent	12,684	25,583

14.1    GSF (Generation Scaling Factor) renegotiation

During 2015, hydropower generation utilities were strongly impacted by the power generation below their physical guarantee due to the low level of the reservoirs affected by the rainfall shortage of the last years, and resulting in the need for liquidation with the CCEE, at the price of the PLD, of the deficit between the generated power and the sold power.

Hydropower generation utilities significantly affected by the low reservoir levels in recent years were benefited by the enactment of Law No. 13,203 by the Concession Authority on 12.08.2015, which allows hydropower generation companies subscribing to the Electricity Reallocation Mechanism (MRE) to reallocate their hydrological risk as from January 1, 2015. 

ANEEL Regulatory Resolution No. 684 of 12.11.2015 establishes the criteria and other conditions for reallocation of hydrological risk by MRE members. In the Regulated Contracting Environment (ACR), hydrological risk was transferred to consumers against payment by the generation company of a risk premium into the Rate Tier Pooling Account (CCRBT). In the Free Contracting Environment (ACL), hydrological risk was reallocated through Reserve Capacity contracts.

On December 23, 2015, following analysis of reallocation conditions in the ACR and ACL, Copel GeT and Elejor filed a request for renegotiation of hydrological risk in ACR of HPPs Mauá, Foz do Areia, Santa Clara and Fundão, which was consented through Decisions No. 84/2016 and 43/2016.

In accordance with Hydrological Risk Renegotiation Term and previously mentioned regulations, the companies acquired the right to partially recover cost with GSF in 2015, in the amount of R$33.55 per average MW for SP100 product class, based on the risk premium contracted by them.

The amounts originally recognized on the renegotiation of the hydrological risk were as follows:

Power Plant	Physical guarantee (Average MW )	Eligible amount of energy (Average MW )	Amortization period of prepaid expenses	Grant extension period (intangible asset)	Asset value to recover as renegotiation of  GSF	Value of prepaid expenses to amortize with future risk premium	Value of intangible assets amortization over the concession period
Mauá	100.827	97.391	01.01.2016 to 06.30.2020	not applicable	28,623	28,623	-
Foz do Areia	576.000	226.705	01.01.2016 to 12.31.2016	05.24.2023 to 09.17.2023	66,628	17,222	49,406
Santa Clara and Fundão	135.400	134.323	01.01.2016 to 04.22.2019	10.25.2036 to 05.28.2037	39,369	30,326	9,043
		458.419			134,620	76,171	58,449

 A breakdown of these items as at 12.31.2017 is presented below:

	Balance as of  January 1, 2016	Amortization	Transfers	Balance as of  December 31, 2016	Amortization	Transfers	Balance as of December 31, 2017
Risk premium - current asset	23,313	(32,679)	24,825	15,459	(12,876)	12,876	15,459
Risk premium - noncurrent asset	25,340	-	110	25,450	-	(12,876)	12,574
Intangible	30,807	(4,493)	26,872	53,186	(7,441)	-	45,745
Liability deduction with CCEE	55,160	(3,353)	(51,807)	-	-	-	-
	134,620	(40,525)	-	94,095	(20,317)	-	73,778
Risk premium to be amortized - prepaid expenses	76,171			40,909			28,033
Grant extension period - intangible	58,449			53,186			45,745

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15. Receivable from Related Parties

12 Months Ended

Dec. 31, 2017

Receivable From Related Parties

Receivable from Related Parties

	12.31.2017	12.31.2016
Controlling shareholders
State of Paraná (15.1)	130,417	155,141
Joint Ventures
Voltalia São Miguel do Gostoso (15.2)	38,169	28,968
Structure sharing	405	-
	168,991	184,109
Current	38,835	28,968
Noncurrent	130,156	155,141

15.1    State of Paraná

15.1.1     Credit related to Luz Fraterna Program, R$115,890 (R$115,890 as of 12.31.2016)

The transfer of the receivables from the Luz Fraterna account (Note 37.a) of Copel DIS to Copel was suspended from the second half of 2015, considering Decree No. 2,789/2015, which created the possibility of using presumed ICMS (VAT tax) credits for the settlement of invoices referring to this program. In addition, State Law No. 18,875, dated 09.27.2016 authorized the State of Paraná to pay in installments the debts due and unpaid to Copel relating to services rendered up to the date of publication of said Law.

On March 23, 2018, the State of Paraná settled the balance of R$115,890. 

15.1.2     Credit referring to 2014 World Cup construction work, R$14,266 (R$14,266 as of 12.31.2016)

Copel’s executive board, through the 2,119th Meeting, of July 28, 2014, approved the transfer of credit rights on costs related to mobility projects for FIFA 2014 World Soccer Cup made by Copel DIS and under the responsibility of the Paraná State government.

ANEEL agreed to the transaction through order No. 3,483/2015 and a Credit Assignment Agreement that transfers Copel DIS rights to Copel was executed.

In addition, State Law No. 18,875, dated September 27, 2016, authorized the State of Paraná to pay debts due and unpaid to Copel relating to services rendered up to the date of publication of said Law. Considering this legal provision, Management is in the negotiation phase to define the terms of the settlement of this balance.

15.1.3     Credit referring to Programa Morar Bem, R$261 (R$24,985 as of 12.31.2016)

Programa Morar Bem Paraná, established by Decree No. 2,845/2011, is an agreement between Paraná State, Companhia de Habitação do Paraná (Cohapar) and Copel DIS, and is managed by Cohapar. Copel DIS main attributions in this agreement are comprised of the construction of electric power distribution networks and housing project consumer unit service connections.

State Law No. 18,875, dated September 27, 2016, authorized the State of Paraná to pay in installments the debts overdue and not paid to Copel DIS relating to services rendered up to the date of publication of said Law. Considering this legal provision, the State of Paraná settled the debt on December 18, 2017. Continuing the provision of services, the balance changed to R$261, fully received in March 2018. 

15.2    Voltalia São Miguel do Gostoso Participações S.A. - Loan

On May 14, 2015, a loan agreement was signed between Copel (lender) and Voltalia São Miguel do Gostoso Participações S.A. (borrower), with retroactive effects as from February 6, 2015, aiming at providing working capital for financing the borrower’s activities and business. The limit of R$29,400 was established, plus IOF and interest of 111.5% of the CDI. The initial term of two years was changed to February 6, 2018, the date on which the contract was settled. Of the limit approved, the borrower used R$27,950 and recognized finance income of R$3,513 in 2017 (R$3,509 in 2016).

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16. Other Temporary Investments

12 Months Ended

Dec. 31, 2017

Other Temporary Investments

Other Temporary Investments

				Stock exchange		Stock exchange
		Shares		quotation		quotation
Investment	Investor	(quantity)	Type	per share (R$)	12.31.2017	per share (R$)	12.31.2016
Companhia de Saneamento do Paraná - Sanepar (16.1)	Copel	36,343,267	Preferred	-	-	10.75	390,690
Other investments	Copel				18,727		17,607
					18,727		408,297

16.1    Joining the Sanepar’s Units Program and public offering of Units

On November 17, 2017, Copel requested the conversion of shares and for joining Sanepar’s Units Program, which occurred on November 21, 2017. The units held by Copel and Copel Energia are composed by one common share and four preferred shares issued by Sanepar.

Copel, holder of 36,343,267 preferred shares issued by Sanepar, requested the conversion of 7,268,655 into common shares and the formation of 7,268,653 Units. Copel Energia, in turn, holder of 7,956,306 common shares issued by Sanepar acquired on March 13, 2017 (Note 18.5), requested the conversion of 6,365,044 into preferred shares and the formation of 1,591,261 Units.

On December 21, 2017, the bookbuilding of the secondary public offering with restricted placement efforts of Units issued by Sanepar was concluded, setting the price to R$55.20 per Unit. Copel and Copel Energia participated as sellers and sold all their Units, consequently receiving cash proceeds of R$484,608.

The settlement of the Restrictive Public Offering occurred on December 18, 2017. The gain from this transaction totaled R$28,650 (Note 33.6).

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17. Judicial Deposits

12 Months Ended

Dec. 31, 2017

Judicial Deposits

Judicial Deposits

	12.31.2017	12.31.2016
Taxes claims	337,909	433,880
Labor claims	120,463	149,968
.
Civil
Suppliers	-	7,680
Civil	110,495	51,482
Easements	6,114	6,679
Customers	2,522	3,197
	119,131	69,038
.
Others	5,026	4,717
	582,529	657,603

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18. Investments

12 Months Ended

Dec. 31, 2017

Investments Abstract

Investments

18.1    Changes in investments

	Balance as of January 1, 2017 Restated	Equity	Investment/ Advance for future capital increase	Amorti- zation	Proposed dividends and JCP	Other (a)	Balance as of December 31, 2017
Joint Ventures (18.3)
Dominó Holdings (18.4)	81,526	(568)	-	-	(5,144)	(75,814)	-
Voltalia São Miguel do Gostoso I	75,563	(565)	-	-	-	-	74,998
Voltalia São Miguel do Gostoso - authorization rights	11,140	-	-	(367)	-	-	10,773
Paraná Gás	37	(34)	-	-	-	-	3
Costa Oeste	37,232	(2,566)	-	-	(1,020)	-	33,646
Marumbi	94,878	(9,537)	-	-	-	-	85,341
Transmissora Sul Brasileira	69,369	(5,009)	-	-	-	-	64,360
Caiuá	60,057	(4,020)	-	-	-	-	56,037
Integração Maranhense	122,253	(8,852)	-	-	-	-	113,401
Matrinchã	792,069	57,376	-	-	(13,626)	-	835,819
Guaraciaba	398,969	25,377	-	-	(6,026)	-	418,320
Paranaíba	147,213	17,020	2,082	-	(4,042)	-	162,273
Mata de Santa Genebra	232,240	19,477	210,920	-	(3,263)	-	459,374
Cantareira	161,855	3,879	35,205	-	(921)	-	200,018
	2,284,401	91,978	248,207	(367)	(34,042)	(75,814)	2,514,363
Associates
Dona Francisca Energética (18.5)	32,766	8,876	-	-	(11,821)	-	29,821
Foz do Chopim Energética (18.5)	13,967	6,645	-	-	(7,528)	-	13,084
Dominó Holdings	-	4	-	-	-	2,453	2,457
Other	12,016	(5,764)	36	2,872	-	396	9,556
	58,749	9,761	36	2,872	(19,349)	2,849	54,918
Investment property	1,362	-	-	-	-	-	1,362
	2,344,512	101,739	248,243	2,505	(53,391)	(72,965)	2,570,643
(a) Of the total amount of R$75,814, R$73,361 refers to capital decrease and R$2,453 refers to the change in the investment of a Joint venture to an Associate.

	Balance as of January 1, 2016 Restated	Equity	Equity valuation adjustments	Investment Advance for future capital increase	Amorti- zation	Proposed dividends and JCP	Other	Balance as of December 31, 2016
Joint Ventures (18.3)
Dominó Holdings (a)	242,652	37,492	(375)	-	-	(123,260)	(74,983)	81,526
Voltalia São Miguel do Gostoso I	72,249	4,345	-	-	-	(1,031)	-	75,563
Voltalia São Miguel do Gostoso - authorization rights	11,507	-	-	-	(367)	-	-	11,140
Paraná Gás	106	(69)	-	-	-	-	-	37
Costa Oeste	32,631	7,372	-	-	-	(2,771)	-	37,232
Marumbi	75,914	16,188	-	3,520	-	(744)	-	94,878
Transmissora Sul Brasileira	67,563	1,806	-	-	-	-	-	69,369
Caiuá	51,271	8,143	-	-	-	643	-	60,057
Integração Maranhense	104,286	15,934	-	1,569	-	464	-	122,253
Matrinchã	697,912	41,910	-	67,345	-	(15,098)	-	792,069
Guaraciaba	298,794	11,194	-	90,564	-	(1,583)	-	398,969
Paranaíba	100,726	12,847	-	36,691	-	(3,051)	-	147,213
Mata de Santa Genebra	26,903	(2,578)	-	207,915	-	-	-	232,240
Cantareira	60,105	5,155	-	97,431	-	(836)	-	161,855
	1,842,619	159,739	(375)	505,035	(367)	(147,267)	(74,983)	2,284,401
Associates
Sanepar (b)	311,679	43,120	(479)	-	-	(19,372)	(334,948)	-
Dona Francisca Energética (18.5)	32,234	7,901	-	-	-	(7,369)	-	32,766
Foz do Chopim Energética (18.5)	15,574	10,675	-	-	-	(12,282)	-	13,967
Other	9,905	(55,024)	-	57,135	-	-	-	12,016
	369,392	6,672	(479)	57,135	-	(39,023)	(334,948)	58,749
Other investments	20,473	-	570	-	-	-	(19,681)	1,362
	2,232,484	166,411	(284)	562,170	(367)	(186,290)	(429,612)	2,344,512
(a) The amount of (R$74,983) refers to the capital reduction of the investee.
(b) Transfer to Other temporary investments at 11.24.2016

	Balance as of January 1, 2015	Equity	Equity valuation adjustments	Investment/ Advance for future capital increase	Proposed dividends and JCP	Amortization	Balance as of December 31, 2015 Restated
Joint Ventures
Dominó Holdings	225,334	24,767	8,625	-	(16,074)	-	242,652
Voltalia São Miguel do Gostoso I	52,421	(99)	-	20,055	(128)	-	72,249
Voltalia São Miguel do Gostoso - authorization rights	11,693	-	-	-	-	(186)	11,507
Paraná Gás	-	(8)	-	114	-	-	106
Costa Oeste	23,924	7,506	-	2,983	(1,782)	-	32,631
Marumbi	63,747	13,056	-	2,211	(3,100)	-	75,914
Transmissora Sul Brasileira	73,291	(6,393)	-	665	-	-	67,563
Caiuá	44,761	8,579	-	-	(2,069)	-	51,271
Integração Maranhense	91,835	14,348	-	2,352	(4,249)	-	104,286
Matrinchã	443,262	327	-	254,323	-	-	697,912
Guaraciaba	145,979	(17,136)	-	169,951	-	-	298,794
Paranaíba	68,308	3,018	-	29,400	-	-	100,726
Mata de Santa Genebra	26,151	(2,004)	-	2,756	-	-	26,903
Cantareira	15,273	1,550	-	43,650	(368)	-	60,105
	1,285,979	47,511	8,625	528,460	(27,770)	(186)	1,842,619
Associates
Sanepar	282,311	34,720	11,035	-	(16,387)	-	311,679
Dona Francisca Energética	53,908	(1,077)	-	-	(20,597)	-	32,234
Foz do Chopim Energética	14,907	11,996	-	-	(11,329)	-	15,574
Other	2,567	(5,560)	-	12,898	-	-	9,905
	353,693	40,079	11,035	12,898	(48,313)	-	369,392
Other investments	20,478	-	(5)	-	-	-	20,473
	1,660,150	87,590	19,655	541,358	(76,083)	(186)	2,232,484

18.2    Subsidiaries with non-controlling interest

18.2.1     Summarized financial information

	Compagás		Elejor		UEG Araucária
	12.31.2017	12.31.2016	12.31.2017	12.31.2016	12.31.2017	12.31.2016 Restated	01.01.2016 Restated
ASSETS	632,910	526,477	675,450	708,688	507,060	529,251	944,521
Current assets	151,966	135,292	77,216	76,231	99,101	162,814	563,018
Noncurrent assets	480,944	391,185	598,234	632,457	407,959	366,437	381,503
LIABILITIES	632,910	526,477	675,450	708,688	507,060	529,251	944,521
Current liabilities	147,743	180,133	164,574	142,222	38,386	62,253	173,420
Noncurrent liabilities	87,409	46,716	449,149	486,765	22,470	20,422	16,847
Equity	397,758	299,628	61,727	79,701	446,204	446,576	754,254
STATEMENT OF INCOME
Operating revenues	515,563	542,822	291,597	263,686	129,084	57,432	1,434,180
Operating costs and expenses	(309,213)	(534,817)	(93,230)	(96,321)	(121,883)	(259,324)	(1,120,473)
Financial results	(25,612)	(1,422)	(54,254)	(93,717)	5,302	18,499	(49,186)
Equity in income of subsidiaries	-	-	-	-	(5,777)	(55,284)	(4,955)
Income tax and social contribution	(66,785)	(1,632)	(47,893)	(24,525)	(7,098)	46,358	(120,692)
Net income (loss)	113,953	4,951	96,220	49,123	(372)	(192,319)	138,874
Other comprehensive income	(251)	132	-	-	-	-	-
Total comprehensive income	113,702	5,083	96,220	49,123	(372)	(192,319)	138,874
STATEMENTS OF CASH FLOWS
Cash flows from operational activities	83,661	32,714	143,911	104,136	(86,840)	65,203	374,658
Cash flows from investiment activities	(14,268)	(25,975)	(1,461)	(1,465)	118,460	21,587	7,904
Cash flows from financing activities	(20,623)	(751)	(143,028)	(105,843)	-	(200,000)	(252,670)
TOTAL EFFECTS ON CASH AND CASH EQUIVALENTS	48,770	5,988	(578)	(3,172)	31,620	(113,210)	129,892
Cash and cash equivalents at the beginning of the year	35,309	29,321	38,483	41,655	19,644	132,854	2,962
Cash and cash equivalents at the end of the year	84,079	35,309	37,905	38,483	51,264	19,644	132,854
CHANGE IN CASH AND CASH EQUIVALENTS	48,770	5,988	(578)	(3,172)	31,620	(113,210)	129,892

18.2.2     Changes in equity attributable to non-controlling shareholders

Participation in capital stock	Compagás: 49%	Elejor: 30%	UEG Araucária: 20%	Consolidated
Balance as of January 1, 2015	136,233	25,445	190,413	352,091
Income for the year	11,304	12,937	27,775	52,016
Other comprehensive income	495	-	-	495
Dividends	(3,128)	(16,182)	(67,339)	(86,649)
Balance as of December 31, 2015- restated	144,904	22,200	150,849	317,953
Income (loss) for the year - restated	2,425	14,736	(38,461)	(21,300)
Other comprehensive income	65	-	-	65
Deliberation of additional dividends proposed	-	-	(23,072)	(23,072)
Distribution of dividends with retained earnings	-	(9,342)	-	(9,342)
Dividends	(576)	(3,684)	-	(4,260)
Balance as of December 31, 2016 - restated	146,818	23,910	89,316	260,044
Income (loss) for the year	55,837	28,866	(74)	84,629
Other comprehensive income	(123)	-	-	(123)
Deliberation of additional dividends proposed	-	(11,053)	-	(11,053)
Dividends	(7,631)	(23,205)	-	(30,836)
Balance as of December 31, 2017	194,901	18,518	89,242	302,661

18.3    Total balances of the groups of assets, liabilities, net income and share in commitments and contingent liabilities of the main joint ventures

	Voltalia	Costa Oeste	Marumbi	Transmissora Sul Brasileira	Caiuá	Integração Maranhense	Matrinchã	Guaraciaba	Paranaíba	Mata de Santa Genebra	Cantareira
12.31.2017
.
ASSETS	155,272	99,028	162,155	659,464	230,743	466,783	2,774,973	1,428,247	1,698,213	1,722,063	952,670
Current assets	2,141	7,791	10,314	56,604	22,895	44,594	297,331	139,920	233,065	107,568	6,046
Cash and cash equivalents	3	2,685	1,949	25,547	1,626	2,224	116,256	34,364	29,066	96,244	5,169
Other current assets	2,138	5,106	8,365	31,057	21,269	42,370	181,075	105,556	203,999	11,324	877
Noncurrent assets	153,131	91,237	151,841	602,860	207,848	422,189	2,477,642	1,288,327	1,465,148	1,614,495	946,624
.
LIABILITIES	155,272	99,028	162,155	659,464	230,743	466,783	2,774,973	1,428,247	1,698,213	1,722,063	952,670
Current liabilities	2,214	3,817	6,386	220,845	23,608	71,563	140,515	71,818	124,764	12,630	9,706
Financial liabilities	-	3,124	5,220	212,618	7,427	13,240	48,686	32,627	53,317	-	-
Other current liabilities	2,214	693	1,166	8,227	16,181	58,323	91,829	39,191	71,447	12,630	9,706
Noncurrent liabilities	-	29,239	49,093	116,818	92,774	163,790	928,706	502,713	911,107	792,519	534,764
Financial liabilities	-	24,751	38,651	106,174	64,081	103,755	712,198	388,806	638,779	703,897	439,192
Other noncurrent liabilities	-	4,488	10,442	10,644	28,693	60,035	216,508	113,907	272,328	88,622	95,572
Equity	153,058	65,972	106,676	321,801	114,361	231,430	1,705,752	853,716	662,342	916,914	408,200
STATEMENT OF INCOME
Net operating income	-	11,837	19,498	53,374	(2,904)	(14,460)	403,891	208,444	320,302	588,123	392,766
Operating costs and expenses	(113)	(15,765)	(29,086)	(63,752)	(5,194)	(4,245)	(183,660)	(93,369)	(150,984)	(434,779)	(347,771)
Financial results	9	(1,841)	(3,140)	(26,994)	(6,017)	(9,070)	(47,331)	(36,981)	(59,132)	(94,512)	(35,207)
Equity in income of subsidiaries	(1,048)	-	-	-	-	-	-	-	-	-	-
Income tax and social contribution	-	737	807	12,330	5,908	9,709	(55,808)	(26,303)	(40,717)	(19,955)	(1,871)
Net income (loss)	(1,152)	(5,032)	(11,921)	(25,042)	(8,207)	(18,066)	117,092	51,791	69,469	38,877	7,917
Other comprehensive income	-	-	-	-	-	-	-	-	-	-	-
Total comprehensive income	(1,152)	(5,032)	(11,921)	(25,042)	(8,207)	(18,066)	117,092	51,791	69,469	38,877	7,917
Investment interest - %	49.0	51.0	80.0	20.0	49.0	49.0	49.0	49.0	24.5	50.1	49.0
Investment book value	74,998	33,646	85,341	64,360	56,037	113,401	835,819	418,320	162,273	459,374	200,018

	Dominó (a)	Voltalia	Costa Oeste	Marumbi	Transmissora Sul Brasileira	Caiuá	Integração Maranhense	Matrinchã	Guaraciaba	Paranaíba	Mata de Santa Genebra	Cantareira
12.31.2016
.
ASSETS	180,049	156,422	112,601	185,888	696,381	255,276	513,186	2,583,118	1,247,036	1,284,733	1,050,330	525,446
Current assets	24,725	2,177	9,892	12,614	51,963	26,820	49,355	273,185	107,429	41,648	59,160	1,242
Cash and cash equivalents	5,340	41	4,323	3,324	23,295	1,435	115	118,196	16,284	3,051	47,792	157
Other current assets	19,385	2,136	5,569	9,290	28,668	25,385	49,240	154,989	91,145	38,597	11,368	1,085
Noncurrent assets	155,324	154,245	102,709	173,274	644,418	228,456	463,831	2,309,933	1,139,607	1,243,085	991,170	524,204
.
LIABILITIES	180,049	156,422	112,601	185,888	696,381	255,276	513,186	2,583,118	1,247,036	1,284,733	1,050,330	525,446
Current liabilities	13,669	2,212	8,003	17,760	33,949	26,776	76,137	120,886	41,099	83,078	523,351	140,759
Financial liabilities	-	-	3,110	5,190	25,153	7,387	13,188	52,625	9,928	45,939	489,017	65,697
Other current liabilities	13,669	2,212	4,893	12,570	8,796	19,389	62,949	68,261	31,171	37,139	34,334	75,062
Noncurrent liabilities	-	-	31,594	49,531	315,589	105,934	187,554	845,764	391,712	600,784	63,427	54,373
Financial liabilities	-	-	27,426	43,171	308,859	70,633	115,732	747,709	378,528	561,700	-	-
Other noncurrent liabilities	-	-	4,168	6,360	6,730	35,301	71,822	98,055	13,184	39,084	63,427	54,373
Equity	166,380	154,210	73,004	118,597	346,843	122,566	249,495	1,616,468	814,225	600,871	463,552	330,314
.
STATEMENT OF INCOME
Net operating income	-	-	20,433	37,559	56,553	38,148	64,428	433,833	310,380	322,855	570,237	337,614
Operating costs and expenses	(969)	(122)	(3,341)	(11,906)	(12,042)	(4,008)	(2,851)	(237,779)	(204,412)	(185,789)	(497,852)	(321,966)
Financial results	(24,062)	5	(1,213)	(3,596)	(32,674)	(6,432)	(10,934)	(66,462)	(73,693)	(58,703)	(80,255)	225
Equity in income of subsidiaries	101,543	8,987	-	-	-	-	-	-	-	-	-	-
Income tax and social contribution	-	-	(1,426)	(1,822)	(2,810)	(11,355)	(18,125)	(44,061)	(9,429)	(25,924)	2,724	(5,354)
Net income	76,512	8,870	14,453	20,235	9,027	16,353	32,518	85,531	22,846	52,439	(5,146)	10,519
Other comprehensive income	(9,669)	-	-	-	-	-	-	-	-	-	-	-
Total comprehensive income	66,843	8,870	14,453	20,235	9,027	16,353	32,518	85,531	22,846	52,439	(5,146)	10,519
Investment interest - %	49.0	49.0	51.0	80.0	20.0	49.0	49.0	49.0	49.0	24.5	50.1	49.0
Investment book value	81,526	75,563	37,232	94,878	69,369	60,057	122,253	792,069	398,969	147,213	232,240	161,855
(a) Balances adjusted to accounting practices.

As at December 31, 2017, Copel's interest in the commitments assumed from its joint ventures is equivalent to R$141,744 (R$503,546 as at December 31, 2016) and in contingent liabilities is equivalent to R$38,218 (R$834 as at December 31, 2016).

18.4    Dominó Holdings S.A.

At the Extraordinary General Meeting held on March 13, 2017, the shareholders approved the capital reduction of Dominó Holding, without cancellation of shares, through the delivery of all common shares issued by Sanepar, owned by Dominó Holdings, in the proportion of its interests. As a consequence, Copel Energia became the direct holder of 7,956,306 common shares of Sanepar, measured at their fair value at R$73,361, determined based on the discounted cash flow method. These shares were settled on December 18, 2017, as per Note 16.1.

18.5    Total balances of the groups of assets, liabilities, net income and share in contingent liabilities of the main associates

	Dona Francisca		Foz do Chopim
	12.31.2017	12.31.2016	12.31.2017	12.31.2016
ASSETS	138,079	151,563	61,163	48,937
Current assets	10,304	19,311	21,553	11,043
Noncurrent assets	127,775	132,252	39,610	37,894
.
LIABILITIES	138,079	151,563	61,163	48,937
Current liabilities	4,144	5,306	1,808	2,336
Noncurrent liabilities	4,443	3,982	22,776	7,553
Equity	129,492	142,275	36,579	39,048
.
STATEMENT OF INCOME
Net operating income	70,716	70,208	40,441	40,762
Operating costs and expenses	(30,379)	(34,074)	(21,124)	(10,130)
Financial income (expense)	835	1,453	809	795
Income tax and social contribution	(2,632)	(3,275)	(1,547)	(1,580)
Net income	38,540	34,312	18,579	29,847
Other comprehensive income	-	-	-	-
Total comprehensive income	38,540	34,312	18,579	29,847
Investment interest - %	23.0303	23.0303	35.77	35.77
Investment book value	29,821	32,766	13,084	13,967

As at December 31, 2017, Copel's interest in the contingent liabilities of its associates is equivalent to R$58,194 (R$55,565 as at December 31, 2016).

XML

19. Property, Plant and Equipment

12 Months Ended

Dec. 31, 2017

Property, plant and equipment [abstract]

Property, Plant and Equipment

The Company records assets used in administrative and commercial facilities for generation of electric power and telecommunication services in property, plant and equipment. Investments in electric power transmission and distribution and in piped gas distribution are recorded in financial assets and/or intangible assets as per IAS 38, IFRIC 12 (Notes 4.3.9 and 4.6).

On initial adoption of IFRS, property, plant and equipment were measured at fair value with recognition of their deemed cost.

Under Articles 63 and 64 of Decree No. 41,019/1957 and Article 19 of Decree No. 2,003/1996, the assets and facilities used mostly in the generation of power are attached to these services and cannot be withdrawn, sold, assigned, or mortgaged without the prior written consent of the regulatory agency. ANEEL Resolution No. 691/2015, however, regulates the release of assets from the concessions of the Public Electric Power Service, granting prior authorization to release the property and other fixed assets not usable by the concession when they are destined for sale, and also determining that the sales proceeds less respective charges be deposited in a restricted bank account to be invested in the concession.

19.1    Property, plant and equipment by asset class

		Accumulated			Accumulated
	Cost	depreciation	12.31.2017	Cost	depreciation	12.31.2016
In service
Reservoirs, dams and aqueducts	6,638,348	(4,071,621)	2,566,727	6,595,895	(3,912,383)	2,683,512
Machinery and equipment	5,320,736	(2,654,801)	2,665,935	5,309,674	(2,645,702)	2,663,972
Buildings	1,500,144	(989,221)	510,923	1,498,841	(954,470)	544,371
Land	277,665	(15,287)	262,378	277,112	(12,351)	264,761
Vehicles and aircraft	59,101	(48,759)	10,342	60,914	(45,243)	15,671
Furniture and tools	16,990	(11,476)	5,514	16,771	(10,989)	5,782
(-) Provision for impairment (19.9)	(4,986)	-	(4,986)	(77,318)	-	(77,318)
(-) Special Obligations	(56)	18	(38)	(56)	10	(46)
	13,807,942	(7,791,147)	6,016,795	13,681,833	(7,581,128)	6,100,705
In progress
Cost	5,023,013	-	5,023,013	3,969,703	-	3,969,703
(-) Provision for impairment (19.9)	(1,210,358)	-	(1,210,358)	(1,136,105)	-	(1,136,105)
	3,812,655	-	3,812,655	2,833,598	-	2,833,598
	17,620,597	(7,791,147)	9,829,450	16,515,431	(7,581,128)	8,934,303

19.2    Changes in property, plant and equipment

	Balance as of  January 1, 2017	Additions /  (Reversal) of   impairment	Depreciation	Loss on  disposal	Transfers	Balance as of  December 31, 2017
In service
Reservoirs, dams and aqueducts	2,683,512	-	(144,484)	(2,160)	29,859	2,566,727
Machinery and equipment	2,663,971	-	(188,988)	(37,685)	228,637	2,665,935
Buildings	544,372	-	(36,347)	(773)	3,671	510,923
Land	264,761	-	(2,935)	(3)	555	262,378
Vehicles and aircraft	15,671	-	(5,492)	(6)	169	10,342
Furniture and tools	5,782	-	(803)	(12)	547	5,514
(-) Provision for impairment (19.9)	(77,318)	72,332	-	-	-	(4,986)
(-) Special Obligations	(46)	-	8	-	-	(38)
	6,100,705	72,332	(379,041)	(40,639)	263,438	6,016,795
In progress
Cost	3,969,703	1,318,336	-	(23,869)	(241,157)	5,023,013
(-) Provision for impairment (19.9)	(1,136,105)	(74,253)	-	-	-	(1,210,358)
	2,833,598	1,244,083	-	(23,869)	(241,157)	3,812,655
	8,934,303	1,316,415	(379,041)	(64,508)	22,281	9,829,450
	Balance as of January 1, 2016	Additions	Depreciation	Loss on disposal	Transfers	Balance as of December 31, 2016
In service
Reservoirs, dams and aqueducts	2,830,290	-	(142,986)	(555)	(3,237)	2,683,512
Machinery and equipment	2,855,110	-	(185,254)	(11,143)	5,259	2,663,972
Buildings	581,554	-	(37,246)	(1,971)	2,034	544,371
Land	267,623	-	(2,935)	(7)	80	264,761
Vehicles and aircraft	20,205	-	(4,861)	(142)	469	15,671
Furniture and tools	6,236	-	(835)	(4)	385	5,782
(-) Provision for impairment (19.9)	(15,095)	(62,223)	-	-	-	(77,318)
(-) Special Obligations	(14)	-	8	-	(40)	(46)
	6,545,909	(62,223)	(374,109)	(13,822)	4,950	6,100,705
In progress
Cost	2,851,078	1,301,856	-	(13,580)	(169,651)	3,969,703
(-) Provision for impairment (19.9)	(704,305)	(431,800)	-	-	-	(1,136,105)
	2,146,773	870,056	-	(13,580)	(169,651)	2,833,598
	8,692,682	807,833	(374,109)	(27,402)	(164,701)	8,934,303

19.3    Effects on property, plant and equipment of the end date and the extension of the electric power generation concessions and the quota regime

Since September 12, 2012, with issuance of Provisional Measure No. 579, enacted into Law No. 12,783/2013, hydroelectric and thermoelectric power generation concessions may be extended, only once, at the discretion of the Granting Authority for a period of up to 30 and 20 years, respectively.

Extension of concessions for hydroelectric power generation is subject to acceptance of certain conditions established by the Granting Authority, such as: (i) change in remuneration to tariff calculated by ANEEL for each plant; (ii) allocation of the plant’s physical power and capacity guarantee shares to concessionaires and licensees of distribution utilities; (iii) submission to service quality standards determined by ANEEL; and (iv) agreement with amounts established as indemnity of assets related to the concession.

With the expiration of SHP Rio dos Patos, HPP GPS and HPP Mourão concessions, investments subject to indemnity were transferred to account “Accounts receivable related to the concession extension”, considering the right to indemnity (Note 11).

Also in relation to current regulation, the concessionaire must request the extension of the concession in advance of up to 60 months before the term end of hydroelectric power generation plants, and of up to 24 months for thermoelectric plants.

Current regulatory framework also determines that, if the concessionaire opts to extend the concession, the Granting Authority may advance the effects of the extension by up to 60 months from the final agreement term or the concession term, defining the initial tariff.

If the concession period is not extended, the Concession Grantor will open an auction or bid for a concession period of up to 30 years, considering as bid winner, the lowest tariff value and the highest offer to pay onerous grant.

Both in cases of early extension as new bid for a new concession term, Management understands it has an assured contractual right to receive an indemnity of the assets related to the public service concessions, based on the new replacement value (VNR), that will consider accumulated depreciation and amortization as of the date of initial operation of the facility.

Decree 9,271, published on January 25, 2018, allows the Federal Government to grant a new concession agreement for an additional 30-years period to the company winning the bid for privatization of electric power public service concession. For this purpose, the project should be privatized at least 60 months before the end of the concession. In addition, the project will have its regime changed from economic operation to Independent Power Generation and will have an amount payable for the Grant Bonus.

19.4    Average depreciation rates

Average rate of depreciation (%)	31.12.2017	31.12.2016
Generation
General equipment	6.33	6.31
Machinery and equipment	3.59	2.29
Generators	3.21	3.04
Reservoirs, dams and ducts	2.11	2.13
Hydraulic turbines	2.61	2.57
Gas and steam turbines	2.30	2.30
Water cooling and treatment	4.00	3.99
Gas conditioner	4.00	3.66
Wind power plant unit	3.85	3.85
Central management
Buildings	3.33	3.33
Machinery and office equipment	6.25	6.25
Furniture and fixtures	6.25	6.25
Vehicles	14.29	14.29
Telecommunications
Transmission equipment	6.36	6.90
Terminal equipment	12.09	13.41
Infrastructure	7.45	7.43

Depreciation of the assets which are part of the original project of Mauá, Colíder, Cavernoso II, Santa Clara and Fundão HPPs

Copel GeT has assets from the original project of Mauá, Colíder and Cavernoso II Hydroelectric Power Plants, and Elejor of Santa Clara and Fundão Hydroelectric Power Plant, for which the Company does not expect to receive full guarantee from the Granting Authority that it will indemnify the Company by the end of the concession period for the residual value of the assets which are part of the original project. This interpretation is based on Law No. 8,987/95 and Decree No. 2,003/96, which regulates the production of electricity by independent producers.

Accordingly, from the date these assets start operations they are depreciated at the rates set by ANEEL (Brazilian Electricity Regulatory Agency), limited to the concession period.

As established on concession agreements, subsequent investments not forecast in the original project, provided that they are approved by the Granting Authority and have not yet been amortized, will be indemnified by the end of concessions. Therefore, these assets will be depreciated at the rates set by ANEEL, from the operating start. 

19.5    Costs of loans, financing and debentures capitalized

The costs of loans, financing and debentures capitalized during 2017 amounted to R$2,297, at an average rate of 0.09% p.a. (R$7,142, at an average rate of 0.26% p.a., during 2016).

19.6    HPP Colíder

On July 30, 2010, at the ANEEL Auction of Power from New Projects 003/10, Copel GeT won the rights to the concession of the Colíder Hydroelectric Power Plant, valid for 35 years from the date of signature of Concession Agreement No. 001/11-MME-HPP Colíder, which took place on January 17, 2011.

This project will comprise a main powerhouse of 300 MW, which is enough to supply approximately one million people. The facility will take advantage of the hydroelectric potential discovered on the Teles Pires River, between the towns of Nova Canaã do Norte and Itaúba, in the northern region of the State of Mato Grosso.

The National Bank for Economic and Social Development (BNDES) approved the classification of the HPP Colíder project for financial support and the signed financing agreement amounted to R$1,041,155 (Note 23). Until December 31, 2017, the financing amount of R$975,108 was released.

Due to acts of God and force majeure, such as fire at the construction site, and public power acts that created difficulties involving environmental licenses, among other setbacks, such as delays in delivery of equipment, in electromechanical assembly services and in the construction of the transmission line of the power plant, the project timeframe was adversely affected, leading to postponement of the commercial generation of the power plant, whose first generating unit is expected to be operational by June 2018, whilst the third and last one is expected by November 2018. As a result of these events, a balance of estimated losses on impairment of assets is recorded as shown in Note 19.9.

The Colíder Hydroelectric Power Plant’s power output was sold at an ANEEL auction at a final price of R$103.40/MWh, as of July 1, 2010, adjusted according to the variation of IPCA inflation index to R$163.41 as of December 31, 2017. 125 averages MW were sold, for supply starting on January 2015, for 30 years. Copel GeT submitted an application to ANEEL to exclude its responsibility, so that the obligation to supply energy could be postponed. In a first judgment, the request was not accepted, Copel GeT filed an application for reconsideration of the decision, which was also denied on March 14, 2017. Not agreeing with the decision, Copel GeT filed again an application for reconsideration, which was definitely denied on July 4, 2017 Copel GeT filled a lawsuit in the court on December 18, 2017, requesting the reversal of the decision of the Agency, and it was granted, in April 2018, the request for the anticipation of guardianship with the preliminary effect for postponement of the supply of energy sold.

Copel GeT has complied with its commitments of energy supply as follows:

·         From January 2015 to May 2016 - with energy surpluses not contracted in its other plants;

·         From June 2016 to December 2018 - with partial reduction, in June 2016, through a bilateral agreement; and from July 2016 to December 2018, with reduction of all supply contracts of the CCEARs - Energy Trading Agreement in the Regulated Environment, through a bilateral agreement and participation in the New Energy and Decrease Clearing Facility (“Mecanismo de Compensação de Sobras e Déficits de Energia Nova - MCSD-EN”). 

On July 14, 2017, the assured power of the project was revised by MME Ordinance No. 213/SPE, going to 178.1 average MW, after full set-up.

At December 31, 2017, the expenditures incurred on HPP Colíder presented a balance of R$2,197,630.

19.7    Joint operations - consortiums

The amounts recorded under property, plant and equipment referring to the participations of Copel GeT in consortiums are shown below:

	Share	Annual average
Joint operations	Copel GeT (%)	depreciation rate  (%)	12.31.2017	12.31.2016
In service
HPP Mauá (Consórcio Energético Cruzeiro do Sul)	51.0		859,917	859,917
(-) Accumulated depreciation		3.43	(147,086)	(117,625)
			712,831	742,292
In progress
HPP Baixo Iguaçu (19.7.1)	30.0		640,178	390,420
			640,178	390,420
			1,353,009	1,132,712

19.7.1     Consórcio Empreendedor Baixo Iguaçu - Cebi

The purpose of the consortium is to build and operate the project known as Baixo Iguaçu Hydroelectric Plant, with minimum installed capacity of 350.20 MW and physical guarantee revised to 171.3 MW. The plant is located on the Iguaçu River between the municipalities of Capanema and Capitão Leônidas Marques, and between the Governador José Richa Hydroelectric Plant and the Iguaçu National Park, in the State of Paraná.

The start of commercial operation of the three units is scheduled for the fourth quarter of 2018. The previous schedule has been changed due to the suspension of the Installation License, as per the decision of the Federal Court of the 4^th Region (TRF-RS), held on June 16, 2014, that stopped the construction work as of July of that year. In March 2015, a decision authorizing the Company to resume construction work was published. However, Instituto Chico Mendes de Conservação da Biodiversidade - ICMBio imposed additional conditions for granting an environmental license to the Company, which prevented it from resuming construction work. Cebi sent IAP - Environmental Institute of Paraná the information necessary for those conditions to be met and in August 2015 the license was issued. Having obtained the IAP license, and after technical and contractual adjustments required due to the long downtime, the works were resumed on February 2, 2016.

On August 23, 2016, the Company signed the 2^nd Amendment to the Concession Agreement with the purpose of formalizing the redefinition of the work schedule, acknowledging in favor of Cebi the exclusion of responsibility for the delay in implementing the project for a period of 756 days, which was considered as an extension of the concession period, which originally was until August 19, 2047 and became September 14, 2049. On November 7, 2017, ANEEL acknowledged through the Authorization No. 3,770 an additional period of 46 days for exclusion of responsibility relating to the recurring invasions of the construction site, between May and October 2016.

The constructions and electromechanical assembly of the powerhouse enabled the installation/positioning of important parts of the turbine-generator set, in October and November 2017. The river diversion to enable the last phase of the construction is scheduled to be carried out in May 2018.

19.8    Cutia wind farm project

The largest Copel wind farm called Cutia is under construction, and is divided into two large complexes:

·         Cutia Complex: composed of seven wind farms (Guajiru, Jangada, Potiguar, Cutia, Maria Helena, Esperança do Nordeste and Paraíso do Ventos do Nordeste) with 180.6 MW of total installed capacity, 71.4 average MW of assured power, all located in the State of Rio Grande do Norte. The power that will be generated by the farms was sold on the 6^th Reserve Auction that was held on October 31, 2014, at an average historical price of R$144.00/MWh, inflation adjusted according to the variation of the IPCA to R$176,64 as of December 31, 2017, and the forecast for commercial generation of these farms is scheduled for July 2018; and 

·         Bento Miguel Complex: composed of six wind farms (São Bento do Norte I, São Bento do Norte II, São Bento do Norte III, São Miguel I, São Miguel II and São Miguel III) with a total installed capacity of 132.3 MW, 58.1 average MW assured power, all also located in the State of Rio Grande do Norte. The power that will be generated by the farms was sold on the 20th New Energy Auction that was held on November 28, 2014, at an average historical price of R$136.97/MWh, inflation adjusted according to the variation of the IPCA to R$167,16 as of December 31, 2017. The initial forecast for commercial generation of these farms is January 2019.

The following are the relevant milestones for the execution of the works from January 2016 to December 2017. In January 2016, the environmental licenses were obtained, beginning the access road runs, bases and assembly platform of the generator set. In April 2016, construction of the Cutia Substation was started, with installed capacity of three 120 MVA transformers and twenty-six 34.0 kV circuits, two circuits for each wind farm. In October 2016, with the advanced stage of construction services in some farms, the first generator sets began to be delivered, and Torres Productive Center began operating, a structure in which precast elements that will constitute the towers of support of the wind turbines are being produced. In January 2017, the process of assembling the towers of the wind turbines began.

As a result of the review of the recoverable amount of these projects, a balance of estimated losses on impairment of assets is recorded as demonstrated in Note 19.9.

19.9    Estimated losses on impairment of generation segment assets

Based on previous indicators of impairment, of assumptions representing the Company management best estimates, of the methodology set forth by IFRIC 12 - Concessions and of measurement of value in use, a number of power plants or cash generating units of the generation segment were tested.

The calculation of the value in use was based on discounted operating cash flows over the time of concessions, maintaining the Company’s current commercial conditions. The rate used to discount the cash flows was set in light of the WACC (Weighted Average Cost of Capital) methodology and CAPM (Capital Asset Pricing Model) methodology for the generation business, considering usual market parameters.

Internal references such as the budget approved by the Company, historical or past data, updating of the timeframe of work and amount of investments for projects in course support the design of key assumptions by Company management. In the same framework, external references such as level of consumption of electric power, expansion of the economic activity in Brasil and the availability of water resources support the key information about estimated cash flows.

Worth noting is that a number of assumptions used by Company management when determining future cash flows can be affected by uncertain events, which, in its turn, may give rise to variation in results. Changes in the political and economic model, for example, may lead to upward trend when projecting country risk-rating, increasing the discount rates used in tests.

All in all, the tests addressed the following key assumptions:

·         Growth compatible with historical data and perspective for the Brazilian economy growth;

·         Specific discount rates (pre-tax and after-tax) for the segments tested, obtained through the methodology usually applied by the market, taking into consideration the weighted average cost of capital;

·         Projected revenue in accordance with the agreements in force, without any expectation for renewal of concession/authorization;

·         Expenses broken into cash generating units, projected in view of the budget approved by the Company; and

·         The Company addressed all its generation projects as independent cash generating units.

The projects with impairment balances recorded at December 31, 2017 are the following:

	Property, Plant and Equipment			Value in use
	Cost	Depreciation	Impairment
Projects
HPP Colíder (a)	2,217,391	(1,859)	(683,021)	1,532,511
Wind power complex Cutia (a)	1,083,474	-	(224,510)	858,964
Wind power complex Bento Miguel (a)	217,121	-	(98,231)	118,890
Consórcio Tapajós (b)	14,464	-	(14,464)	-
Power plants in Paraná (a)	864,761	(59,743)	(195,118)	609,900
	4,397,211	(61,602)	(1,215,344)	3,120,265
(a) Under construction
(b) Project under development

The Company reviewed the recoverable amount of property, plant and equipment and, as a result of these analyses, the impairment suffered the following changes:

	Balance as of	Impairment at the year	Balance as of	Impairment at the year	Balance as of
	January 1, 2016		December 31, 2016		December 31, 2017
In service
UEG Araucária (19.9.1)	-	(69,073)	(69,073)	69,073	-
Power plants in Paraná  (19.9.2)	(15,095)	6,850	(8,245)	3,259	(4,986)
	(15,095)	(62,223)	(77,318)	72,332	(4,986)
In progress
HPP Colíder (19.9.3)	(642,551)	47,062	(595,489)	(87,532)	(683,021)
Wind power complex Cutia (19.9.4)	-	(232,827)	(232,827)	8,317	(224,510)
Wind power complex Bento Miguel (19.9.4)	-	(81,637)	(81,637)	(16,594)	(98,231)
Consórcio Tapajós	-	(14,464)	(14,464)	-	(14,464)
Power plants in Paraná  (19.9.2)	(61,754)	(149,934)	(211,688)	21,556	(190,132)
	(704,305)	(431,800)	(1,136,105)	(74,253)	(1,210,358)
	(719,400)	(494,023)	(1,213,423)	(1,921)	(1,215,344)

19.9.1     UEG Araucária

In 2017 the calculation of value in use considered Company assumptions and budgets, discount rate of 7.66% after tax (8.01% p.a. in 2016), which stems from the WACC methodology for the electric power generation segment, plus additional risk associated with revenue variation. The reversal noted is justified mainly by the review of the discount rate and by the Company’s revised projections as to the expected variable unit cost (CVU) and power delivery.

19.9.2     Power plants of Paraná

In 2017 the calculation of value in use of generation assets in the State of Paraná considered: (i) Company assumptions and budgets; (ii) for power plants in operation, pretax discount rate in constant currency of 8.11% (8.63% p.a. in 2016); and (iii) for power plants under modernization and/or construction, after-tax discount rate in constant currency of 5.35% p.a. (5.70% p.a. in 2016), which stem from the WACC methodology for the electric power generation segment. The reversal noted arises mainly from the review of the discount rate used.

19.9.3     Colíder HPP

In 2017 the calculation of value in use considered Company assumptions and budgets and after-tax discount rate in constant currency of 5.35% p.a. (5.70% p.a. in 2016), which stems from the WACC methodology for the electric power generation segment. This additional provision was recognized mainly in connection with further delays for work completion, as well as increase in CAPEX expected for completion of the project. The current estimate for go-live of the first turbine is June 2018 (in 2016 the tentative date was December 2017).

19.9.4     Cutia and Bento Miguel Wind Farms

In 2017 the calculation of the value in use considered the Company assumptions and budgets and pretax discount rate in constant currency of 7.11% (8.06% p.a. in 2016), which stems from the WACC methodology for the electric power generation segment, adjusted for the specific condition of taxation of those projects. The movements noted are justified mainly by the revision of the discount rate and by the revisions of projections, notably as to the assumption of power available for long-term sale.

As the Cutia Wind Farm is concerned, the reversal noted is justified mainly by the revision of the discount rate and by the revisions of the projected operating costs. The value of the reversal decreased by the change in the expected go-live in July 2018 (in 2016, the tentative date was October 2017).

On the other hand, as the Bento Miguel Wind Farm is concerned, the increase in the provision is driven mainly by the increase in estimated capex for the project. The amount of the provision was reduced by the change in the expectation of go-live beginning October 2018 (in 2016, the tentative date was January 2019). 

19.9.5     Cash generating units with no provision for impairment

Most of power plants with no impairment have a recoverable amount above the carrying amount of the PPE. The table below presents the percentage the recoverable amount (“VR”) exceeds carrying amount (“VC”) of PPE, calculated as follows: (recoverable amount / carrying amount -1). Also, the Company performed a sensitivity analysis, increasing the discount rate by 5% and by 10% for impairment risk assessment for each power plant. Based on such analysis, the sole project with an impairment risk is the Voltalia Wind Farm, as follows:

Cash generating unit			VR/VC-1	VR/VC-1	Impairment Risk
	Discount rate	VR/VC-1	(5% Variation)	(10% Variation)
Complexo EOL São Bento	7.11%	55.28%	50.63%	46.22%	-
Complexo EOL Brisa I	7.11%	37.47%	33.37%	29.47%	-
Complexo EOL Brisa II	7.11%	8.26%	4.32%	0.60%	-
Complexo EOL Voltalia (a)	7.11%	0.95%	-1.99%	-4.80%	10,772
Hydric Assets
Foz do Areia	8.11%	422.35%	416.91%	411.56%	-
Segredo	8.11%	229.15%	222.11%	215.32%	-
Caxias	8.11%	192.16%	185.52%	179.11%	-
Guaricana	8.11%	63.71%	61.10%	58.55%	-
Chaminé	8.11%	87.54%	84.92%	82.36%	-
Chopim I	8.11%	149.27%	142.63%	136.28%	-
São Jorge	8.11%	55.49%	53.29%	51.13%	-
Melissa	8.11%	122.19%	116.80%	111.63%	-
Desvio do Rio Jordão	8.11%	229.15%	222.11%	215.32%	-
Palmas	8.11%	72.85%	67.51%	62.44%	-
Elejor	8.11%	172.07%	165.68%	159.59%	-
(a) Impairment value of the Complex as a whole. The write-off of Copel’s impairment loss consists only of the authorization
rights on acquisition of R$10,772 thousand (balance at December 31, 2017).

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20. Intangible Assets

12 Months Ended

Dec. 31, 2017

Intangible Assets Abstract

Intangible Assets

	12.31.2017	12.31.2016
Distribution concession agreement (20.1)	5,750,873	5,513,381
Generation concession agreements/ authorization (20.2)	619,221	663,712
Concession agreement - gas distribution (20.3)	43,888	238,509
Others (20.4)	38,842	44,210
	6,452,824	6,459,812

20.1    Distribution concession agreement

.
				Special liabilities
	in service	in progress	in service	in progress	Total
Balance as of January 1, 2016	7,230,163	773,107	(2,830,995)	(40,763)	5,131,512
Acquisitions	-	892,693	-	-	892,693
Customers contributions	-	-	-	(122,809)	(122,809)
Provision for claims added to the cost of the works	-	3,430	-	-	3,430
Transfers for accounts receivable related to concession	(2,230)	(56,740)	-	-	(58,970)
Capitalizations for intangible in service	743,351	(743,351)	(135,104)	135,104	-
Amortization of quotas - concession and authorization (a)	(395,255)	-	121,075	-	(274,180)
Amortization of quotas - PIS/Pasep and Cofins credits	(11,270)	-	-	-	(11,270)
Amortization of quotas appropriated in the cost of the work	(292)	292	-	-	-
Loss on disposal	(27,309)	(19,716)	-	-	(47,025)
Balance as of December 31, 2016	7,537,158	849,715	(2,845,024)	(28,468)	5,513,381
Acquisitions	-	757,709	-	-	757,709
Customers contributions	628	-	(579)	(125,983)	(125,934)
Provision for claims added to the cost of the works	-	(1,587)	-	-	(1,587)
Transfers for accounts receivable related to concession (Note 10.1)	-	(56,853)	-	-	(56,853)
Capitalizations for intangible in service	822,472	(822,472)	(128,351)	128,351	-
Amortization of quotas - concession (a)	(411,575)	-	125,740	-	(285,835)
Amortization of quotas - PIS/Pasep and Cofins credits	(11,014)	-	-	-	(11,014)
Loss on disposal	(29,704)	(12,066)	2,776	-	(38,994)
Balance as of December 31, 2017	7,907,965	714,446	(2,845,438)	(26,100)	5,750,873
(a) Amortization during the concession as of the start of commercial operations of the enterprises or based on the useful life of the assets, of the two the shortest.

In accordance with IFRIC 12 - Accounting concessions, the share of infrastructure that will be used during concession was recorded in intangible assets, composed of the assets of the electricity distribution, net of interests of consumers (special obligations).

Special liabilities comprise customers’ contributions, Federal Government grants, federal, state, and municipal funds, and special credits assigned to the investments in facilities related to a concession.

The amortization of the special liabilities is calculated using the average rate of depreciation of assets that comprises the infrastructure, and the balance of special liabilities contained in intangible assets will be fully amortized over the concession period.

Special obligations are not financial liabilities or shareholder’s credits.

20.2    Generation concession agreement

.
	Concession contract (a)		Concession and
	in service	in progress	authorization rights	Total
Balance as of January 1, 2016	242,298	5,557	416,272	664,127
ANEEL grant - use of public property	-	742	-	742
Renegotiation of hydrological risk - GSF	26,872	-	-	26,872
Amortization of quotas - concession and authorization (a)	(14,890)	-	(13,139)	(28,029)
Balance as of December 31, 2016	254,280	6,299	403,133	663,712
ANEEL grant - use of public property	-	678	-	678
Amortization of quotas - concession and authorization (b)	(17,837)	-	(13,139)	(30,976)
Transfers to property, plant and equipment	-	-	(14,193)	(14,193)
Balance as of December 31, 2017	236,443	6,977	375,801	619,221
(a) Includes the balances of use of public asset and hydrological risk renegotiation.
(b) Amortization during the concession/authorization as of the start of commercial operations of the enterprises.

20.3    Concession agreement - gas distribution

.
	in service	in progress	Total
Balance as of January 1, 2016	187,608	119,100	306,708
Acquisitions	-	25,847	25,847
Transfers for accounts receivable related to concession	-	(68,737)	(68,737)
Capitalizations for intangible in service	35,934	(35,934)	-
Amortization of quotas - concession and authorization (a)	(25,251)	-	(25,251)
Loss on disposal	(20)	(38)	(58)
Balance as of December 31, 2016	198,271	40,238	238,509
Acquisitions	-	13,745	13,745
Transfers for accounts receivable related to concession	(154,908)	(24,501)	(179,409)
Capitalizations for intangible in service	10,011	(10,011)	-
Amortization of quotas - concession (a)	(28,753)	-	(28,753)
Loss on disposal	(204)	-	(204)
Balance as of December 31, 2017	24,417	19,471	43,888
(a)  Amortization during the concession as of the start of commercial operations of the enterprises or based on the useful life of the assets, of the two the shortest.

20.4    Other intangible assets

.
	in service	in progress	Total
Balance as of January 1, 2016	22,853	19,876	42,729
Acquisitions	-	10,187	10,187
Transfers from property, plant and equipment	25	341	366
Transfers from investments	-	122	122
Transfers from accounts receivable related to concession	150	-	150
Capitalizations for intangible in service	11,690	(11,690)	-
Amortization of quotas (a)	(8,936)	-	(8,936)
Amortization of quotas - PIS/Pasep and Cofins credits	(57)	-	(57)
Loss on disposal	-	(351)	(351)
Balance as of December 31, 2016	25,725	18,485	44,210
Acquisitions	-	6,932	6,932
Transfers from property, plant and equipment	105	-	105
Capitalizations for intangible in service	5,744	(5,744)	-
Amortization of quotas (a)	(8,809)	-	(8,809)
Amortization of quotas - PIS/Pasep and Cofins credits	(54)	-	(54)
Loss on disposal	(18)	(3,524)	(3,542)
Balance as of December 31, 2017	22,693	16,149	38,842
(a) Annual amortization rate: 20%.

20.5    Costs of loans, financing and debentures capitalized

The costs of loans, financing and debentures capitalized during 2017 amounted to R$4,497, at an average rate of 0.25% p.y. (R$7,608, at an average rate of 0.41% p.y. during 2016 and R$32,579, at an average rate of 1.78% p.y. in 2015).

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21. Payroll, Social Charges and Accruals

12 Months Ended

Dec. 31, 2017

Payroll Social Charges And Accruals

Payroll, Social Charges and Accruals

	12.31.2017	12.31.2016
Social security liabilities
Taxes and social contribution	49,748	50,016
Social security charges on paid vacation and 13th salary	32,686	35,570
	82,434	85,586
Labor liabilities
Payroll, net	1,796	835
Vacation	106,450	111,021
Profit sharing	68,817	64,814
Voluntary termination	38,642	25,532
Profit sharing	15,828	9
	231,533	202,211
	313,967	287,797

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22. Suppliers

12 Months Ended

Dec. 31, 2017

Suppliers Abstract

Suppliers

	12.31.2017	12.31.2016
Energy supplies	986,689	673,442
Materials and supplies	521,969	399,576
Natural gas for resale	101,026	132,985
Charges for use of grid system	117,362	86,347
	1,727,046	1,292,350
Current	1,683,577	1,255,639
Noncurrent	43,469	36,711

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23. Loans and Financing

12 Months Ended

Dec. 31, 2017

Loans And Financing

Loans and Financing

			Issue	Number of	Final	Annual rate p.y.	Finance
	Contracts	Company	Date	installment	maturity	(interest + commission)	charges	Principal	12.31.2017	12.31.2016
Foreign currency
National Treasury Department - STN
(Secretaria do Tesouro Nacional)
(1)	Par Bond	Copel	05.20.1998	1	04.11.2024	6.0% + 0.20%	Half-yearly	17,315	52,768	53,498
(1)	Discount Bond	Copel	05.20.1998	1	04.11.2024	1.1875%+0.20%	Half-yearly	12,082	36,502	37,007
Total foreign currency									89,270	90,505
Local currency
Banco do Brasil
(2)	21/02155-4	Copel DIS	09.10.2010	2	08.15.2018	109.0% of DI	Half-yearly	116,667	60,049	122,713
(3)	21/02248-8	Copel DIS	06.22.2011	2	05.16.2018	109.0% of DI	Half-yearly	150,000	75,601	152,314
(4)	CCB 21/11062X	Copel DIS	08.26.2013	3	07.27.2018	106.0% of DI	Half-yearly	151,000	51,932	151,359
(5)	CCB 330.600.773	Copel DIS	07.11.2014	3	07.11.2019	111.8% of DI	Half-yearly	116,667	80,699	124,170
(6)	CFX 17/35959-7	Copel DIS	05.16.2017	2	05.06.2019	12.0%	Quarterly	75,000	75,291	-
(7)	CCB 21/00851-5	Copel DIS	06.30.2017	2	06.13.2019	11.0%	Quarterly	38,889	38,241	-
(8)	CCB 17/35960-0	Copel DIS	07.27.2017	2	07.17.2019	11.0%	Quarterly	50,333	51,073	-
(9)	CFX 17/35958-9	Copel DIS	08.15.2017	2	08.05.2019	11.0%	Quarterly	58,333	58,636	-
(10)	NCI 330.600.132	Copel	02.28.2007	3	02.28.2019	107.8% of DI	Half-yearly	231,000	157,707	241,312
(11)	NCI 330.600.151	Copel	07.31.2007	3	07.31.2017	111.0% of DI	Half-yearly	18,000	-	6,366
(12)	CCB 306.401.381	Copel	07.21.2017	3	07.21.2020	120.0% of DI	Half-yearly	640,005	660,949	677,177
(13)	NCI 306.401.445	Copel	02.24.2017	2	02.15.2020	124.5% of DI	Half-yearly	77,000	78,186	-
									1,388,364	1,475,411
Eletrobras
(14)	980/95	Copel DIS	12.22.1994	80	11.15.2018	8.0%	Quarterly	11	3	5
(14)	981/95	Copel DIS	12.22.1994	80	08.15.2019	8.0%	Quarterly	1,169	115	180
(14)	982/95	Copel DIS	12.22.1994	80	02.15.2020	8.0%	Quarterly	1,283	48	71
(14)	983/95	Copel DIS	12.22.1994	80	11.15.2020	8.0%	Quarterly	11	77	103
(14)	984/95	Copel DIS	12.22.1994	80	11.15.2020	8.0%	Quarterly	14	33	44
(14)	985/95	Copel DIS	12.22.1994	80	08.15.2021	8.0%	Quarterly	61	23	29
(15)	142/06	Copel DIS	05.11.2006	120	09.30.2018	5.0% + 1.0%	Monthly	74,340	2,730	6,369
(15)	206/07	Copel DIS	03.03.2008	120	08.30.2020	5.0% + 1.0%	Monthly	109,642	23,746	32,648
(15)	273/09	Copel DIS	02.18.2010	120	12.30.2022	5.0% + 1.5%	Monthly	63,944	8,222	9,866
									34,997	49,315
Caixa Econômica Federal
(15)	415.855-22/14	Copel DIS	03.31.2015	120	12.08.2026	6.0%	Monthly	2,844	5,087	5,631
(16)	3153-352	Copel DIS	11.01.2016	36	01.15.2022	5.5 % above TJLP	Quarterly	489	498	-
									5,585	5,631
Finep
(17)	21120105-00	Copel TEL	07.17.2012	81	10.15.2020	4%	Monthly	35,095	8,855	11,983
(17)	21120105-00	Copel TEL	07.17.2012	81	10.15.2020	3.5% + TR	Monthly	17,103	7,482	10,043
									16,337	22,026
BNDES
(18)	820989.1	Copel GeT	03.17.2009	179	01.15.2028	1.63% above TJLP	Monthly	169,500	118,370	128,722
(19)	1120952.1-A	Copel GeT	12.16.2011	168	04.15.2026	1.82% above TJLP	Monthly	42,433	26,078	28,895
(20)	1120952.1-B	Copel GeT	12.16.2011	168	04.15.2026	1.42% above TJLP	Monthly	2,290	1,407	1,559
(21)	1220768.1	Copel GeT	09.28.2012	192	07.15.2029	1.36% above TJLP	Monthly	73,122	55,357	59,493
(22)	13211061	Copel GeT	12.04.2013	192	10.15.2031	1.49% above TJLP	Monthly	1,041,155	871,022	923,982
(23)	13210331	Copel GeT	12.03.2013	168	08.15.2028	1.49% and 1.89%  above TJLP	Monthly	17,644	13,878	15,017
(24)	15206041	Copel GeT	12.28.2015	168	06.15.2030	2.42% above TJLP	Monthly	34,265	25,899	27,666
(25)	15205921	Copel GeT	12.28.2015	168	12.15.2029	2.32% above TJLP	Monthly	21,584	15,734	16,860
(26)	14205611-A	Copel DIS	12.15.2014	72	01.15.2021	2.09% p.y. above TJLP	Monthly	41,583	21,266	27,893
(26)	14205611-B	Copel DIS	12.15.2014	6	02.15.2021	2.09 p.y. above TR BNDES	Annual	17,821	15,384	18,735
(27)	14205611-C	Copel DIS	12.15.2014	113	06.15.2024	6% p.y.	Monthly	78,921	50,949	58,787
(28)	14205611-D	Copel DIS	12.15.2014	57	02.15.2021	TJLP	Monthly	750	29	38
(29)	14212711	Santa Maria	06.01.2015	192	08.15.2031	1.66% p.y. above TJLP	Monthly	59,462	51,578	54,734
(29)	14212721	Santa Helena	06.01.2015	192	08.15.2031	1.66% p.y. above TJLP	Monthly	64,520	55,932	59,355
(30)	11211521	GE Farol	03.19.2012	192	06.15.2030	2.34% p.y. above TJLP	Monthly	54,100	48,742	52,053
(30)	11211531	GE Boa Vista	03.19.2012	192	06.15.2030	2.34% p.y. above TJLP	Monthly	40,050	36,034	38,482
(30)	11211541	GE S.B. do Norte	03.19.2012	192	06.15.2030	2.34% p.y. above TJLP	Monthly	90,900	81,723	87,275
(30)	11211551	GE Olho D'Água	03.19.2012	192	06.15.2030	2.34% p.y. above TJLP	Monthly	97,000	87,278	93,229
									1,576,660	1,692,775
(31)	Promissory notes	Copel GeT	12.29.2015	1	12.18.2017	117% of DI	Single installment	500,000	-	581,909
(32)	Promissory notes	Copel GeT	05.12.2017	1	05.12.2019	117% of DI	Single installment	500,000	529,919	-
									529,919	581,909
Banco do Brasil
BNDES Transfer
(33)	21/02000-0	Copel GeT	04.16.2009	179	01.15.2028	2.13% above TJLP	Monthly	169,500	118,373	128,721
									118,373	128,721
Total local currency									3,670,235	3,955,788
									3,759,505	4,046,293
								Current	784,666	1,470,742
								Noncurrent	2,974,839	2,575,551

Allocation:

(1) The restructuring of medium and long-term debt in connection with the financing received under Law No. 4,131/1962.

(2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) Working capital.

(14) National Program for Watering - Proni.

(15) Rural Electricity Program - Luz para Todos.

(16)  Operation for the acquisition of machinery and/or equipment and IT and automation equipment.

(17) BEL project - ultra wide band intranet service (Ultra Wide Band - UWB).

(18) (33) Construction of the Mauá Hydroelectric Power Plant and its transmission system, in consortium with Eletrosul.

(19) Implementation of transmission line between substations Foz do Iguaçu and Cascavel Oeste.

(20) Purchase of machinery and equipment for implementation of the transmission line described above.

(21) Implementation of Cavernoso II SHP.

(22) Implementation of HPP Colíder and associated transmission system.

(23) Implementation of the 230/138kV Cerquilho III Substation.

(24) Implementation of transmission line Assis – Paraguaçu Paulista II.

(25) Implementation of transmission lines Londrina – Figueira and Salto Osório – Foz do Chopim C2.

(26) Investment in preservation of businesses, improvements, operational support and general investments in expansion.

(27) National machinery and equipment accredited by BNDES.

(28) Implementation, expansion and consolidation of projects and  Enterprises Social Investment Programs (ISE).

(29) (30) Construction and implementation of wind generating plant.

(31) Payment of grant – auction 012/2015, relative to HPP GPS.

(32) Payment of the first installment of Copel’s debentures and working capital improvement of Copel GeT.

Guarantees:

(1) Company’s centralized revenues account. Deposited Collateral (23.1).

(2) (3) Pledge until 360 days.

(2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (20) Credit assignment.

(14) (15) Own revenue, supported by power of attorney granted by a public instrument, and the issue of promissory notes and commercial duplicates equal to the number of installments falling due.

(16) Fiduciary assignment of trade notes.

(17) Withhold the amounts from the checking account in which revenues are deposited.

(18) (21) (33) Total revenue from the sale and/or transaction of CCEAR energy, related to the project, through Concession Agreement of
Attachment of Revenues, Account Management and Other Covenants.

(19) (20) Fiduciary assignment of rights under the Concession Agreement No. 027/2009-ANEEL, Transmission Service Provision Contract No.
09/2010-ONS and contracts for use of Transmission System, signed by the ONS, the Dealerships and the Transmission System users, including the total income from the provision of transmission services.

(22) Fiduciary assignment of rights under the Concession Agreement No. 01/2011MME-HPP Colíder and fiduciary assignment due to the Purchase and Sale of Energy (CCVEE) between Copel and BRF - Brasil Foods S.A.

(23) Fiduciary assignment of rights under the Public Service Concession Agreement for Electric Power Transmission No. 015/2010-ANEEL, signed between Copel and the Federal Government.

(24) Assignment of credit rights deriving from Concession Agreement No. 002/2013 - ANEEL.

(25) Assignment of credit rights deriving from Concession Agreement No. 022/2012 - ANEEL.

(26) (27) (28) Surety of Companhia Paranaense de Energia; fiduciary assignment of income and indemnity rights of the concession.

(29) Guarantee from Companhia Paranaense de Energia; pledge of shares; assignment of credit rights deriving from Electricity Agreement Reservation No. 153/2011; assignment of revenues arising from the project.

(30) Pledge of shares (GE Farol, GE Boa Vista, GE São Bento do Norte and GE Olho D'Água); assignment of receivables arising from the sale of electricity produced by the project; assignment of machinery and equipment assembled or built with the funds pegged to it.

(31) (32) Surety of Companhia Paranaense de Energia.

23.1    Collateral and escrow deposits - STN

Guarantees provided in the form of Par Bonds for R$44,548 (R$42,988 at December 31, 2016), and Discount Bonds in the amount of R$31,117 (R$30,086 at December 31, 2016), to be used to repay amounts of principal corresponding to STN contracts, when these payments are due on April 11, 2.024. The amounts are updated by applying the weighted average percentage changes of United States Treasury Zero Coupon bond prices, by the share of each series of the instrument in the portfolio of collateral for principal, provided in the context of the Brazilian Financing Plan from 1992.

23.2    Breakdown of loans and financing by currency and index

		12.31.2017	%	12.31.2016	%
Foreign currency - change in currencies in the period (%)
U.S. Dollar	(1.32)	89,270	2.37	90,505	2.24
		89,270	2.37	90,505	2.24
Local currency - accumulated index in the period (%)
CDI	6.89	1,695,042	45.09	2,057,320	50.84
TJLP	7.00	1,629,198	43.34	1,743,974	43.10
TR	0.00	22,866	0.61	28,778	0.71
Without indexer	-	323,129	8.59	125,716	3.11
		3,670,235	97.63	3,955,788	97.76
		3,759,505	100.00	4,046,293	100.00

23.3    Maturity of noncurrent installments

12.31.2017	Foreign currency	Local currency	Total
2019	-	1,219,313	1,219,313
2020	-	407,504	407,504
2021	-	141,144	141,144
2022	-	136,801	136,801
2023	-	135,156	135,156
After 2023	88,485	846,436	934,921
	88,485	2,886,354	2,974,839

23.4    Changes in loans and financing

	Foreign currency	Local currency	Total
Balance as of January 1, 2016	104,434	3,972,626	4,077,060
Funding	-	93,806	93,806
Charges	3,909	448,161	452,070
Monetary and exchange variations	(13,878)	26,336	12,458
Amortization - principal	-	(226,973)	(226,973)
Payment - charges	(3,960)	(358,168)	(362,128)
Balance as of December 31, 2016	90,505	3,955,788	4,046,293
Funding	-	800,044	800,044
Charges	3,868	395,081	398,949
Monetary and exchange variations	(1,184)	18,623	17,439
Amortization - principal	-	(971,187)	(971,187)
Payment - charges	(3,919)	(528,114)	(532,033)
Balance as of December 31, 2017	89,270	3,670,235	3,759,505

23.5    Covenants

The Company signed loan and financing agreements containing covenants that require economic and financial ratios to remain within pre-determined parameters, requiring annual fulfillment and other conditions to be observed, such as not promote any alteration to the Company’s shareholdings in the capital stock of subsidiaries that would alter control without prior consent. Failing to fulfill these conditions may lead to accelerated debt repayment and/or fines.

At December 31, 2017, all the conditions agreed had been fulfilled.

The financial covenants contained in the loan and financing agreements are presented below:

Company	Contract	Financial index	Limit
Copel GeT	BNDES Finem No. 820989.1 - Mauá	EBITDA /  Net financial results	≥ 1.3
	Banco do Brasil No. 21/02000-0 - Mauá
	3rd issue of Promissory Notes	Consolidated net debt / Consolidated EBITDA	≤ 3.5
		Debt service coverage ratio	≥ 1.5
Copel DIS	BNDES Finem No. 14205611	Financial indebtedness / adjusted EBITIDA	≤ 5.0
Santa Maria	BNDES Finem No. 14212711	Debt service coverage ratio	≥ 1.3
Santa Helena	BNDES Finem No. 14212721
São Bento Energia, Investimento e Participações	BNDES Assignment Agreement	Debt service coverage ratio	≥ 1.3
GE Boa Vista S.A.	BNDES Finem No. 11211531
GE Farol S.A.	BNDES Finem No. 11211521
GE Olho D´Água S.A.	BNDES Finem No. 11211551
GE São Bento do Norte S.A.	BNDES Finem No. 11211541
Financing for businesses - Finem

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24. Debentures

12 Months Ended

Dec. 31, 2017

Debentures Abstract

Debentures

		Issue	Number of	Maturity		Annual rate p.y.
Issue	Company	Date	installment	initial	final	(interest)	Principal	12.31.2017	12.31.2016
(1)   5th	Copel	05.13.2014	3	05.13.2017	05.13.2019	111.5% of DI	1,000,000	672,537	1,017,099
(2)   6th	Copel	06.29.2017	1	-	06.28.2019	117.0% of DI	520,000	542,944	-
(3)   1st	Copel GeT	05.15.2015	3	05.15.2018	05.15.2020	113.0% of DI	1,000,000	1,059,822	1,094,731
(4)   2nd	Copel GeT	07.13.2016	2	07.13.2018	07.13.2019	121.0% of DI	1,000,000	1,037,570	1,060,613
(5)   3rd	Copel GeT	10.20.2017	3	10.20.2020	10.20.2022	126.0% of  DI	1,000,000	999,442	-
(6)   1st	Copel DIS	10.30.2012	2	10.30.2016	10.30.2017	DI + Spread 0.99% p.y.	1,000,000	-	511,525
(7)   2nd	Copel DIS	10.27.2016	2	10.27.2018	10.27.2019	124.0% of DI	500,000	502,179	504,699
(8)   3rd	Copel DIS	10.20.2017	2	10.20.2021	10.20.2022	126.0% of  DI	500,000	501,810	-
(9)   1st	Copel TEL	10.15.2015	5	10.15.2020	10.15.2024	IPCA + 7.9633% p.y.	160,000	184,506	174,184
(10)  2nd	Copel TEL	07.15.2017	1	-	07.15.2022	IPCA + 5.4329	220,000	215,675	-
(11)  2nd	(a)	03.24.2016	192	08.15.2016	07.15.2032	TJLP + 2.02% p.y.	147,575	135,662	143,407
(12)  2nd	(a)	03.24.2016	192	08.15.2016	07.15.2032	IPCA + 9.87% p.y.	153,258	145,786	151,781
(13)  2nd	Elejor	09.26.2013	60	10.26.2013	09.26.2018	DI + Spread 1.00% p.y.	203,000	30,370	70,984
(14)  1st	Compagás	06.15.2013	40	09.15.2015	12.15.2018	TJLP+1.7% p.y.+1.0% p.y.	62,626	19,214	38,018
(15)  2nd	Compagás	04.15.2016	57	07.15.2017	12.15.2021	TJLP/Selic + 2.17% p.y.	33,620	23,461	23,768
								6,070,978	4,790,809
							Current	1,632,062	1,131,198
							Noncurrent	4,438,916	3,659,611
(a)  Nova Asa Branca I, Nova Asa Branca II, Nova Asa Branca III, Nova Eurus IV e Ventos de Santo Uriel.
Characteristics:
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (13) Simple debentures, single series, not convertible into shares, unsecured, for public distribution
with restricted placement efforts, according to CVM No. 476.
(11) Simple debentures, 1st serie, issued privately and not convertible into shares.
(12) Simple debentures, 2nd serie, issued privately and not convertible into shares.
(14) (15) Simple floating debentures, issued privately in a single series and not convertible into shares.
Finance charges:
(1) Half-yearly interest - May and November.
(2) Interest on the maturity of the agreement
(3) Annual interest - May.
(4) Annual interest - July.
(5) (6) (8) (9)  Half-yearly interest - April and October.
(7) Annual interest - October.
(10) Half-yearly interest - January and July.
(11) (12) (13) Monthly interest.
(14) (15) Quarterly interest - March, June, September and December.
Allocation:
(1) (2) (3) (4) (5) (6) (7) (8) Working capital or used to make investments in the issuer.
(9) (10) Deployment, expansion and modernization of the telecommunication network.
(11) (12) Implementation of wind farms and associated transmission systems.
(13) Full settlement of the loan agreement with Copel.
(14) (15) Fund investment plan of the issuer.
Collaterals:
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (13) Personal guarantee
(11) (12) Real and personal guarantee and pledge of Copel Geração e Transmissão's shares.
(14) (15) Floating
Guarantor:
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) Copel.
(13) Copel, at the ratio of  70% and Paineira Participações S.A., at the ratio of  30%.
(14) (15)  Compagás.
Trustee:
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (13) Pentágono S.A. DTVM.
(11) (12) None.
(14) (15)  BNDES Participações S.A. - BNDESPAR.

24.1    Maturity of noncurrent installments

12.31.2017
2019	1,973,438
2020	695,598
2021	618,483
2022	867,060
2023	69,247
After 2023	215,090
	4,438,916

24.2    Changes in debentures

Balance as of January 1, 2016	3,683,928
Funding	1,822,965
Charges and monetary variations	617,126
Amortization - principal	(785,239)
Payment - charges	(547,971)
Balance as of December 31, 2016	4,790,809
Funding	2,242,521
Charges and monetary variations	575,468
Amortization - principal	(915,005)
Payment - charges	(622,815)
Balance as of December 31, 2017	6,070,978

24.3    Covenants

Copel issued debentures containing covenants that require certain economic and financial ratios to be kept within pre-determined parameters, requiring annual fulfillment and other conditions to be observed, such as not promote any alteration to the Company’s shareholdings in capital stock that would alter control without prior consent from the debenture holders; not paying out dividends or interest on capital if it is in arrears in relation to honoring any of its financial obligations or not keeping the financial ratios as determined without prior written consent of the debenture holders. Failing to fulfill these conditions may lead to accelerated redemption of debentures and regulatory penalties. 

At December 31, 2017, subsidiary Ventos de Santo Uriel failed to meet the Debt Service Coverage Index - ICSD of 1.3. However, at December 29, 2017 the Company received a letter from BNDES with reference AE/DEENE2 No. 93/2017, waiving it from fulfillment of the obligation to meet the ICSD for 2017.

Except for the previously exposed, at December 31, 2017, all financial ratios had been fulfilled.

The financial covenants contained in the debenture agreements are presented below:

Company	Contract	Financial index	Limit
Copel	5th issue of Debentures	Consolidated net debt / Consolidated EBITDA Debt service coverage ratio	≤  3.5 ≥ 1.5
	6th issue of Debentures
Copel GeT	1st issue of Debentures
	2nd issue of Debentures
	3rd issue of Debentures
Copel DIS	2nd issue of Debentures
	3rd issue of Debentures
Copel TEL	1st issue of Debentures
	2nd issue of Debentures
Elejor	2nd issue of Debentures	Consolidated net debt / Consolidated EBITDA	≤  4.0
		Debt service coverage ratio	≥ 1.2
Compagás	1st issue of Debentures	Consolidated net debt / Consolidated EBITDA	≤  3.5
	2nd issue of Debentures	General Indebtedness	≤  0.7
Nova Asa Branca I	2nd issue of Debentures	Debt service coverage ratio	≥ 1.3
Nova Asa Branca II
Nova Asa Branca III
Nova Eurus IV
Ventos de Santo Uriel

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25. Post-Employment Benefits

12 Months Ended

Dec. 31, 2017

Post-employment Benefits

Post-Employment Benefits

The Company sponsors private retirement and pension plans (Unified Plan and Plan III) and Healthcare Plan for medical and dental care (“ProSaúde II” and “ProSaúde III” Plans) for their active employees and their dependents. The lifetime sponsorship of the Healthcare Plan for retirees, pensioners and legal dependents is only applied to “Prosaúde II” plan participants.

The amounts of these actuarial obligations (contributions, costs, liabilities, and/or assets) are calculated annually by an independent actuary at year end. 

The benefits plan assets are valued at market values (mark-to-market).

The amount of the net assistance liability is recognized at the present value of the actuarial liability, less the fair value of the plan assets.

The adoption of the projected credit unit method adds each year of service as the source of an additional benefit unit, adding up to the calculation of the final liability.

Other actuarial assumptions are used which take into account biometric and economic tables in addition to historical data from the benefits plans, obtained from the manager of these plans, Fundação Copel de Previdência e Assistência Social.

Actuarial gains or losses caused by changes in assumptions and/or actuarial adjustments are recognized in other comprehensive income.

25.1    Benefit Pension Plan

The Unified Plan is a Defined Benefit plan - BD in which the income is predetermined, according to each individual’s salary. This plan is closed plan for new participants since 1998.

The Plan III is a Variable Contribution plan - CV, being the only plan available for new participants.

The costs assumed by the sponsors for these plans are recognized according to the actuarial valuation prepared annually by independent actuaries in accordance with IAS 19 (R1) and IFRIC 14. The economic and financial assumptions for purposes of the actuarial valuation are discussed with the independent actuaries and approved by the sponsor’s management.

25.2    Healthcare Plan

The Company allocates resources for the coverage of healthcare expenses incurred by their employees and their dependents, within rules, limits, and conditions set in “ProSaúde II” and “ProSaúde III” Plans’ regulations. Coverage includes periodic medical exams in both plans and is only extended to all retirees and pensioners for life in the “ProSaúde II” plan.

25.3    Statement of financial position and statement of income

Amounts recognized in liabilities, under Post-employment Benefits, are summarized below:

	12.31.2017	12.31.2016
Pension plans	1,069	1,252
Healthcare plans	865,034	768,613
	866,103	769,865
Current	53,225	47,894
Noncurrent	812,878	721,971

Amounts recognized in the statement of income are shown below:

	12.31.2017	12.31.2016	12.31.2015
Employees
Pension plans	78,680	75,407	65,878
Healthcare plan - post-employment	97,511	129,647	143,236
Healthcare plan - active employees	81,617	75,578	61,927
(-) Transfers to construction in progress	(21,901)	(22,268)	(19,094)
	235,907	258,364	251,947
Management
Pension plans	1,500	1,175	2,241
Healthcare plan	190	228	139
	1,690	1,403	2,380
	237,597	259,767	254,327

25.4    Changes in post-employment benefits

	Total
Balance as of January 1, 2016	594,660
Appropriation of actuarial calculation	130,707
Pension and healthcare contributions	142,735
Adjustment related to actuarial gains (loss)	88,906
Amortizations	(187,143)
Balance as of December 31, 2016	769,865
Appropriation of actuarial calculation	97,511
Appropriation of pension and healthcare contributions	153,069
Adjustment related to actuarial gains (loss)	46,506
Amortizations	(200,848)
Balance as of December 31, 2017	866,103

25.5    Actuarial valuation in accordance with IAS 19

25.5.1     Actuarial assumptions

The actuarial assumptions used to determine the amounts of liabilities and costs for 2017 and 2016 are shown below:

		2017		2016
	Real	Nominal	Real	Nominal
Economic
Inflation p.y.	-	4.50%	-	5.15%
Expected rate of discount/return p.y.
Unified Plan	5.11%	9.84%	5.91%	11.37%
Plan III	5.24%	9.97%	5.89%	11.34%
Assistance Plan	5.20%	9.94%	5.89%	11.35%
Salary growth Unified Plan p.y.	2.00%	6.59%	2.00%	7.25%
Salary growth Plan III p.y.	1.50%	6.07%	2.00%	7.25%
Demographic
Mortality Table		AT - 2000		AT - 2000
Mortality table of individuals with permanent disability		WINKLEVOSS		WINKLEVOSS
Table of new disability benefit vested		TASA 1927		A. VINDAS

25.5.2     Number of participants and beneficiaries

	Social Security Plans
	Unified Plan		Plan III		Assistance Plan
	12.31.2017	12.31.2016	12.31.2017	12.31.2016	12.31.2017	12.31.2016
Number of active participants	37	39	8,540	8,663	8,172	8,456
Number of Inactive participants	4,435	4,463	3,509	3,363	7,703	7,546
Number of dependent people	-	-	-	-	23,081	23,745
Total	4,472	4,502	12,049	12,026	38,956	39,747

25.5.3     Life expectancy from the average age - Annuity Table AT-2000 (in years)

	Unified Plan	Plan III
As of 12.31.2017
Retired participants	14.92	23.01
Pensioner participants	16.37	27.99
As of 12.31.2016
Retired participants	15.62	23.75
Pensioner participants	16.59	28.89

The average age of inactive participants of the healthcare and pension plans of the Company is 64.4 years.

25.5.4     Actuarial evaluation

Based on the review of the assumptions, the values of the Unified Plan and Plan III as of December 31, 2017 amounted, respectively, surplus of R$481,678 and R$86,487, while the position at December 31, 2016, was, respectively, R$527,723 and R$228,396. The current applicable legislation does not permit any significant reduction in contributions or reimbursements to the Company based on the current surplus in this plan. For this reason, the Company did not record assets on its December 31, 2017 balance sheet that reflect any such right to reduce contributions or refund surplus or other amounts.

	Unified Plan	Plan III	Assistance Plan	12.31.2017	12.31.2016
Total liabilities or partially covered	5,352,894	1,734,568	1,035,957	8,123,419	7,450,113
Fair value of the plan assets	(5,834,572)	(1,821,055)	(170,923)	(7,826,550)	(7,437,619)
Plan coverage status	(481,678)	(86,487)	865,034	296,869	12,494
Unrecognized asset	481,678	86,487	-	568,165	756,119
	-	-	865,034	865,034	768,613

The Company made adjustments to their assistance liabilities through the actuarial report issued on December 31, 2017, when an actuarial gain of R$46,506 was recorded in other comprehensive income.

25.5.5     Changes in actuarial liabilities

	Unified Plan	Plan III	Assistance Plan
Present value of net actuarial obligations as of January 1, 2015	4,379,430	1,181,893	1,047,284
Cost of services	471	8,275	34,802
Cost of interest	559,366	146,595	127,622
Benefits paid	(345,288)	(93,670)	(74,722)
Actuarial (gain) losses	(419,094)	(72,565)	(378,704)
Present value of net actuarial obligations as of December 31, 2015	4,174,885	1,170,528	756,282
Cost of services	203	10,174	44,942
Cost of interest	601,259	170,531	108,465
Benefits paid	(381,274)	(109,146)	(88,259)
Actuarial (gain) losses	556,005	323,034	112,484
Present value of net actuarial obligations as of December 31, 2016	4,951,078	1,565,121	933,914
Cost of services	329	10,502	9,225
Cost of interest	563,257	176,878	105,987
Benefits paid	(406,023)	(122,841)	(7)
Actuarial (gain) losses	244,253	104,908	(13,162)
Present value of net actuarial obligations as of December 31, 2017	5,352,894	1,734,568	1,035,957

25.5.6     Changes in actuarial assets

	Unified Plan	Plan III	Assistance Plan
Fair value of the Plan's assets as of January 1, 2015	4,562,547	1,201,802	149,696
Return estimated for assets	564,872	146,592	19,223
Contributions and distributions	36,294	8,275	-
Benefits paid	(345,288)	(93,670)	-
Actuarial gain (losses)	(330,875)	(100,030)	(6,289)
Fair value of the Plan's assets as of December 31, 2015	4,487,550	1,162,969	162,630
Return estimated for assets	637,541	169,429	23,749
Contributions and distributions	25,724	10,174	-
Benefits paid	(381,274)	(109,146)	-
Actuarial gain (losses)	709,261	560,090	(21,078)
Fair value of the Plan's assets as of December 31, 2016	5,478,802	1,793,516	165,301
Return estimated for assets	546,699	202,691	23,934
Contributions and distributions	30,520	10,505	-
Benefits paid	(406,023)	(122,841)	-
Actuarial gain (losses)	184,574	(62,816)	(18,312)
Fair value of the Plan's assets as of December 31, 2017	5,834,572	1,821,055	170,923

25.5.7     Estimated costs

The estimated net periodic plan costs (gains) for 2018 for each plan are shown below:

	Unified Plan	Plan III	Assistance Plan	2018
Cost of current service	589	9,644	11,633	21,866
Estimated cost of interest	533,202	196,009	102,916	832,127
Expected return on plan assets	(531,448)	(205,782)	(16,579)	(753,809)
Expected employee contributions	(248)	(9,644)	-	(9,892)
Costs (income or loss)	2,095	(9,773)	97,970	90,292

25.5.8     Sensitivity analysis

The following tables feature a sensitivity analysis, which shows the effect of a one percent increase or decrease in the assumed rates of change in care costs, in the aggregate of the cost of service and cost of interest components of the net care costs and the accumulated post-employment benefit obligation.

.	Projected scenarios
	Increase by 1%	Decrease in 1%
Sensitivity of long-term interest rate
Impacts on the obligations of the pension	(444,891)	450,899
Impacts on the obligations of healthcare program	(178,133)	181,222
Sensitivity of growth rate of the medical costs
Impacts on the obligations of healthcare program	72,077	(67,341)
Impact on cost of service for the following financial year of healthcare program	793	(741)
Sensitivity of the service cost
Impacts on the obligations of the pension	(49)	50
Impacts on the obligations of healthcare program	(1,961)	1,995

25.5.9     Benefits payable

The estimated benefits to be paid by the Company in the next five years and the total benefits for the following fiscal years are shown below:

	Unified Plan	Plan III	Assistance Plan	Total
2018	395,584	128,975	41,454	566,013
2019	379,182	181,726	46,407	607,315
2020	362,032	184,824	45,972	592,828
2021	345,456	186,267	45,301	577,024
2022	329,172	186,851	44,509	560,532
2023 to 2057	3,271,908	2,945,247	590,068	6,807,223

25.5.10  Asset allocation and investment strategy

The asset allocation for the Company pension and healthcare plans at the end of 2017 and the allocation goal for 2018, by asset category, are shown below:

	Goal for 2018	2017
Fixed income	87.5%	89.3%
Variable income	6.2%	6.5%
Loans	1.1%	1.3%
Real estate	1.5%	1.7%
Investment structuring	3.7%	1.2%
	100.0%	100.0%

Below are the limits set by the Fund management:

	Unified Plan		Plan III
	target (%)(*)	minimum (%)	target (%)	minimum (%)
Fixed income	91.5%	77.0%	81.0%	59.0%
Variable income	3.0%	1.0%	11.0%	7.0%
Loans	0.5%	0.0%	2.0%	1.0%
Real estate	2.0%	1.0%	1.0%	0.0%
Investment structuring	3.0%	0.0%	5.0%	0.0%
(*) Target based on the total investment of each plan.
Management of Fundação Copel decided to keep a more conservative approach investing in variable income in relation to the allowed legal limit, which is 70%.

As of December 31, 2017 and 2016, the pension plan assets included the following securities issued by Copel:

	Social Security Plans
	Unified Plan		Plan III
	12.31.2017	12.31.2016	12.31.2017	12.31.2016
Shares	-	66	-	186
	-	66	-	186

25.5.11  Additional information

The Company made contributions to Plan III (variable contribution plan) for all active employees at December 31, 2017 and December 31, 2016 in the amounts of R$80,727 and R$75,679, respectively.

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26. Customer Charges Due

12 Months Ended

Dec. 31, 2017

Customer Charges Due

Customer Charges Due

	12.31.2017	12.31.2016
Energy Development Account - CDE (a)	121,912	136,450
Tariff flags	22,427	-
Global Reversal Reserve - RGR	5,686	5,262
	150,025	141,712
(a) Aneel published Resolutions No. 2,002/2017, No. 2,204/2017 and No. 2,231/2017.

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27. Research and Development and Energy Efficiency

12 Months Ended

Dec. 31, 2017

Research And Development And Energy Efficiency

Research and Development and Energy Efficiency

In accordance with Law No. 9,991/2000, concessionaires and licensees of electric power generation and transmission are required to allocate annually the percentage of 1% of their net operating regulatory revenue to research and development of the electricity sector, and the electric power distribution concessionaires must segregate this same percentage into the research and development and energy efficiency programs of the electricity sector, according to ANEEL Normative Resolutions No. 504/2012 and 556/2013, and updated by Sub-module 5.6 - Research and Development - R&D and Energy Efficiency - EE Approved by RN ANEEL No. 737/2016.

27.1    Balances recognized for investment in Research and Development (R&D) and the Energy Efficiency Program (EEP)

	Amounts payable, before any related prepayments	Amounts payable to regulatory agencies	Other amounts payable	Balance as of	Balance as of
				12.31.2017	12.31.2016
Research and Development - R&D
National Fund for Scientific and Technological Development - FNDCT	-	5,232	-	5,232	4,603
MME	-	2,616	-	2,616	2,302
R&D	103,617	-	212,504	316,121	294,088
	103,617	7,848	212,504	323,969	300,993
Energy efficiency program  - EEP
National Program of Electricity Conservation - Procel	-	6,041	-	6,041	4,932
EEP	22,854	-	179,611	202,465	177,964
	22,854	6,041	179,611	208,506	182,896
	126,471	13,889	392,115	532,475	483,889
			Current	282,766	231,513
			Noncurrent	249,709	252,376

27.2    Changes in R&D and EEP balances

	FNDCT	MME	P&D	Procel	PEE	Total
Balance as of January 1, 2016	5,762	2,882	252,828	-	137,521	398,993
Additions	25,535	12,768	25,534	4,804	31,398	100,039
Performance agreement	-	-	-	-	1,907	1,907
Selic interest rate (Note 34)	-	-	25,861	128	15,792	41,781
Payments	(26,694)	(13,348)	-	-	-	(40,042)
Concluded projects	-	-	(10,135)	-	(8,654)	(18,789)
Balance as of December 31, 2016	4,603	2,302	294,088	4,932	177,964	483,889
Additions	29,956	14,978	29,956	8,500	34,000	117,390
Performance agreement	-	-	-	-	1,363	1,363
Selic interest rate (Note 34)	-	-	19,544	(128)	14,929	34,345
Payments	(29,327)	(14,664)	-	(7,263)	-	(51,254)
Concluded projects	-	-	(27,467)	-	(25,791)	(53,258)
Balance as of December 31, 2017	5,232	2,616	316,121	6,041	202,465	532,475

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28. Accounts Payable Related to Concession

12 Months Ended

Dec. 31, 2017

Accounts Payable Related To Concession

Accounts Payable Related to Concession

					Discount	Annual
	Company	Grant	Signature	Closing	Rate	Adjustment	12.31.2017	12.31.2016
(1) HPP Mauá	Copel GeT	06.29.2007	07.03.2007	07.2042	5.65% p.y.	IPCA	16,384	16,235
(2) HPP Colider	Copel GeT	12.29.2010	01.17.2011	01.2046	7.74% p.y.	IPCA	23,188	22,783
(3) HPP Baixo Iguaçu	Copel GeT	07.19.2012	08.20.2012	01.2047	7.74% p.y.	IPCA	6,977	6,299
(4) SHP Cavernoso	Copel GeT	07.11.2013	07.11.2013	07.2018	7.74% p.y.	IPCA	27	66
(5) HPP Apucaraninha	Copel GeT	07.11.2013	07.11.2013	07.2018	7.74% p.y.	IPCA	185	460
(6) HPP Chaminé	Copel GeT	07.11.2013	07.11.2013	07.2018	7.74% p.y.	IPCA	320	795
(7) HPP Derivação Rio Jordão	Copel GeT	07.11.2013	02.24.2014	02.2019	7.74% p.y.	IPCA	313	532
(8) HPP Fundão e HPP Santa Clara	Elejor	10.23.2001	10.25.2001	10.2036	11.00% p.y.	IGPM	507,560	518,372
							554,954	565,542
						Current	62,624	66,210
						Noncurrent	492,330	499,332
Discount rate applied to calculate present value:
Actual net discount rate, in line with the estimated long-term rate. It bears no relationship with the expected project return.
Payment to the federal government:
Monthly installments equivalent to 1/12 of the annual payment restated, as defined in the concession agreement.

28.1    Nominal value and present value of accounts payable related to concession

	Nominal value	Present value
2018	62,779	62,624
2019	62,246	56,079
2020	62,199	50,597
2021	62,199	45,689
After 2021	1,024,162	339,965
	1,273,585	554,954

28.2    Changes in accounts payable related to concession

Balance as of January 1, 2016	535,665
Additions	575,569
Adjust to present value	(483)
Monetary variations	103,384
Payments	(648,593)
Balance as of December 31, 2016	565,542
Additions	678
Adjust to present value	1,432
Monetary variations	53,173
Payments	(65,871)
Balance as of December 31, 2017	554,954

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29. Other Accounts Payable

12 Months Ended

Dec. 31, 2017

Other Accounts Payable

Other Accounts Payable

	12.31.2017	12.31.2016
Customers	33,380	32,283
Public lighting rate collected	24,101	27,565
Aneel Order No. 084/2017 provision	22,132	20,542
Financial offset for the use of water resources	21,467	28,880
Investment acquisition	12,307	9,595
Pledges in guarantee	8,837	8,067
Reimbursements to customer contributions	5,481	10,894
Agreement Ivaí Engenharia (a)	-	122,068
Other liabilities	66,549	35,422
	194,254	295,316
Current	121,405	264,791
Noncurrent	72,849	30,525
(a) The agreement covers the discussions on economic - financial balance of contract and extinguishes the judicial process.

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30. Provisions for Legal Claims

12 Months Ended

Dec. 31, 2017

Provisions For Legal Claims

Provisions for Legal Claims

The Company is defendants in various judicial and administrative proceedings before different courts. Based on assessments made by the Company’s legal counsel, Management makes provisions for actions in which losses are rated probable, thus meeting the criteria for recognition of provisioning described in Note 4.8. to the financial statements at December 31, 2017.

The Company’s management believes that, at the time of preparation of financial statements, it is not practicable to provide information regarding the expected timing of any cash outflows resulting from these legal actions in which the Company is involved, due to the slow pace and unpredictability of Brazilian legal, tax and regulatory systems, and since final resolution of the proceedings for which a provision has been registered depends on the conclusions of court proceedings. Therefore, this information is not being provided.

30.1    Provisions for legal claims

30.1.1 Changes in provisions for litigation in actions rated as probable losses

		Income			Additions to
	Balances as of	Provision		Construction	fixed assets
	January 1, 2017	for litigations		cost	in progress			Balances as of
	Restated	Additions	Reversals	Additions	Additions	Discharges	Transfers	December 31, 2017
Tax
Cofins (a)	93,892	8,888	(23,032)	-	-	-	-	79,748
Others (b)	142,985	21,890	(113,739)	-	-	(433)	8,090	58,793
	236,877	30,778	(136,771)	-	-	(433)	8,090	138,541
Labors (c)	458,901	122,992	(18,518)	-	-	(87,744)	-	475,631
Employee benefits (d)	42,366	61,765	(7,194)	-	-	(7,498)	-	89,439
Civil
Civil and administrative claims (e)	295,484	255,280	(3,240)	-	-	(28,074)	8,163	527,613
Easements (f)	99,380	4,593	-	4,503	2,641	(181)	-	110,936
Expropriations and property (g)	65,712	848	(701)	24,285	5,499	(16)	-	95,627
Customers (h)	5,228	3,884	(286)	-	-	(449)	-	8,377
	465,804	264,605	(4,227)	28,788	8,140	(28,720)	8,163	742,553
Environmental (i)	1,432	960	(808)	-	-	-	-	1,584
Regulatory (j)	67,958	1,648	(5,290)	-	-	-	-	64,316
	1,273,338	482,748	(172,808)	28,788	8,140	(124,395)	16,253	1,512,064
							Current	112,000
							Noncurrent	1,400,064
		Income			Additions to
		Provision		Construction	fixed assets
		for litigations		cost	in progress			Balances as of
	Balances as of				Additions /			December 31, 2016
	January 1, 2016	Additions	Reversals	Additions	(Reversals)	Discharges	Transfers	Restated
Tax
Cofins (a)	258,715	28,563	(193,386)	-	-	-	-	93,892
Others (b)	68,333	118,357	(9,630)	-	-	(1,758)	(32,317)	142,985
	327,048	146,920	(203,016)	-	-	(1,758)	(32,317)	236,877
Labors (c)	408,133	168,352	(9,824)	-	-	(107,760)	-	458,901
Employee benefits (d)	104,480	7,583	(69,334)	-	-	(363)	-	42,366
Civil
Civil and administrative claims (e)	325,217	99,205	(53,965)	-	-	(74,973)	-	295,484
Easements (f)	62,869	1,786	(17,141)	49,842	2,575	(551)	-	99,380
Expropriations and property (g)	196,895	26,764	(943)	1,980	(5,197)	(1,537)	(152,250)	65,712
Customers (h)	13,656	-	(2,195)	-	-	(6,233)	-	5,228
	598,637	127,755	(74,244)	51,822	(2,622)	(83,294)	(152,250)	465,804
Environmental (i)	868	564	-	-	-	-	-	1,432
Regulatory (j)	55,770	12,211	(1)	-	-	(22)	-	67,958
	1,494,936	463,385	(356,419)	51,822	(2,622)	(193,197)	(184,567)	1,273,338

30.1.2     Description of nature and/or details of the principal actions

a)    Contribution for Social Security Funding (COFINS)

Plaintiff: Federal Tax Authority

Cofins payables and respective interest and fines from August 1995 to December 1996 due to the termination of a judicial decision that had recognized the Company’s exemption from Cofins.

Current status: awaiting judgment.

b)    Other tax provisions

Actions relating to federal, state and municipal taxes, fees and other charges: The principal action is described below:

Defendant: Federal Tax Authority

By the case 5037809-14.2015.4.04.7000, Copel GeT required payment in installments of the balance owed on the annual adjustment of corporate income tax (IRPJ) and social contribution (CSLL) for the fiscal year 2014. The Federal Tax Authority consolidated the amount and applied the maximum fine. An injunction was filed against this decision since the Federal Tax Authority failed to obey the limit established in legislation.

Current status: awaiting judgment of the Special Appeal. On December 31, 2016, the amount of R$24,230 was transferred to Other Tax Liabilities (Note 13.3). 

c)    Labor

Labor claims comprise claims filed by employees and former employees of Copel and its subsidiaries in connection with the payment of overtime, hazardous working conditions, transfer bonuses, salary equality/reclassification, and other matters, and also claims by former employees of contractors and third- parties (secondary responsibility) involving indemnity and other matters.

d)    Employee benefits

Labor claims comprise claims filed by retired former employees of the Company and its wholly owned subsidiaries against the Copel Foundation, which will have consequential impact on the Company and its wholly owned subsidiaries, since additional contributions will be required.

e)    Civil and administrative claims

Actions involving billing, irregular procedure, administrative contracts and contractual fine, indemnity for accidents with the electric power grid or vehicles.

The balance also contains the amount being discussed by arbitration and under secrecy and confidentiality, in the discovery phase, without no decision being handed down.

The main lawsuits are as follows:

Plaintiff: Tradener Ltda.     Estimated amount: R$115,559

Class action No. 588/2006 has already been rendered final and unappealable, and the ruling recognized as valid commissions payable by the Company to Tradener. In the civil public action No. 0000219- 78.2003.8.16.0004, filed by the Prosecution Office, a decision has also been rendered ruling on the absence of irregularities in the electric power purchase agreement. Therefore, Tradener brought recovery lawsuits, seeking to receive its commissions.

Current status: Case record 0005990.22.2012.8.16.0004 - the Company was ordered to pay the amount of R$107,955, which is the value updated by the (INPC/IBGE) from the maturity of the commissions, plus default interest of 1% per month, as of the date of notification (October 31, 2012), as well as attorneys’ fees. The Company filed an appeal against this decision, however, on November 8, 2016, by majority votes, the Court dismissed the appeal. Copel filed a request for Amendment of Judgment, which was partially granted to resolve obscurity, although without changing the result of the appeal. Copel filed a Special Appeal with the Superior Court of Justice.

Plaintiff: Compensation to third parties Estimated amount: R$92,663

Lawsuit for compensation of supposed loss to the plaintiff due to work and implementation of the hydroelectric project.  Low court judgment declaring the lawsuit has no grounds and being appealed by the grounded claim of the plaintiff, and the amount of damages should be determined subsequently.

Current status: in the phase of closing of case.

f)     Easements

Lawsuits are filed when there is a difference between the amount determined by Copel for payment and the amount claimed by the owner and/or when the owner's paper title may not be registered (probate proceedings are underway, properties have no registry number, etc.).

They may also involve third-party interventions for adverse possession, whether from owners or occupants of contiguous properties or even in cases of properties where right of way easements is required to preserve limits and boundaries of these areas.

g)    Expropriations and property

Lawsuits are filed challenging expropriation when there is a difference between the amount determined by Copel for payment and the amount claimed by the owner and/or when the owner's paper title may not be registered (probate proceedings are underway, properties have no registry number, etc.).

Possessory case actions include those for repossession of property owned by the concessionaire. Litigation arises when there is a need to repossess properties invaded or occupied by third parties in areas owned by the Company. Cases may also arise from intervention in third-party adverse possession, or owners or occupants of contiguous properties or even in cases of properties to preserve limits and boundaries of expropriated areas.

h)    Consumers

Lawsuits seeking compensation for damages caused in household appliances, lawsuits claiming damages for pain and suffering caused by service interruption and lawsuits filed by industrial consumers challenging the lawfulness of the increase in electricity prices while Plano Cruzado (anti-inflation plan) was in effect and claiming reimbursement for the amounts paid by the Company.

i)     Environmental

Class actions whose purpose is to obstruct the progress of environmental licensing for new projects or to recover permanent preservation areas located around the hydroelectric power plant dams unlawfully used by private individuals. If the outcome of the lawsuits is unfavorable to the Company, management estimates only the cost to prepare new environmental studies and to recover the areas owned by Copel GeT.

They also contemplate the “Termos de Ajuste de Conduta -TAC”, which refers to the commitments agreed upon and approved between the Company and the competent bodies for noncompliance with any condition contained in the Installation and Operation Licenses. As they are considered liabilities, these amounts are recorded as "obligations" in current and noncurrent liabilities and the balancing items in property, plant and equipment (construction cost).

j)     Regulatory

The Company is challenging, both at the administrative and judicial levels, notifications issued by the Regulatory Agency of alleged violations against regulations. The principal action is described below:

Plaintiffs: Companhia Estadual de Energia Elétrica - CEEE and Dona Francisca Energética S.A.

Estimated amount: R$49,397

Copel, Copel GeT and Copel DIS are challenging lawsuits filed against ANEEL's decision No. 288/2002 involving these companies.

Current status: awaiting judgment.

30.2    Contingent liabilities

30.2.1     Classification of actions rated as possible losses

Contingent liabilities are present obligations arising from past events for which no provisions are recognized because it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation. The following information concerns the nature of the Company’s contingent liabilities and potential losses arising thereof.

	12.31.2017	12.31.2016
Tax (a)	858,082	752,625
Labor (b)	360,322	423,495
Employee benefits (c)	20,262	23,631
Civil (d)	1,091,122	594,220
Regulatory (e)	793,720	765,906
	3,123,508	2,559,877

30.2.2     Description of nature and/or details of the principal actions

a)    Tax

Actions relating to federal, state and municipal taxes, fees and other charges in which the Company challenges their applicability, calculation bases and amounts due to be collected. The main lawsuits are as follows:

Plaintiff: Social Security National Institute (INSS)       Estimated amount: R$325,750

Tax claims against Copel related to social security contribution on assignment of manpower (lawsuit No. 5003583-56.2010.404.7000); it is worth emphasizing that the case has already been judged favorably to the Company at two court levels, awaiting judgment by the Superior Court of Justice (STJ).

Current status: awaiting judgment.

Plaintiff: Social Security National Institute (INSS) Estimated amount: R$27,845

Tax collections against Copel consisting of social security contribution imposed on the assignment of labor (NFLD - 35.273.876-6). The case has been at Carf (Brazilian Administrative Tax Court) for judgment since 2010. The assessment of risk as possible is due to the existence of several legal arguments to defend the Company, particularly (a) the fact that no services were provided and no labor was assigned and (b) the fact that service providers classified into the Simples (lower taxation) category are not required to withhold that contribution.

Current status: awaiting judgment.

Plaintiff: State Tax Authority (SEFAZ) Estimated amount: R$69,528

Copel DIS received tax deficiency notice 6.587.156-4 from the State of Paraná for allegedly failing to pay ICMS (VAT) tax on the ‘metered demand’ line in the electricity bills issued to a major consumer between May 2011 and December 2013.

Copel DIS maintains its illegitimacy to appear in the taxable position of this tax assessment, since it was not included in the judicial process, cannot suffer the effects of the judicial decision pronounced in it.

b)    Labor

Labor claims comprise claims filed by employees and former employees of Copel and its subsidiaries in connection with the payment of overtime, hazardous working conditions, transfer bonuses, salary equality/reclassification, and other matters, and also claims by former employees of contractors and third- parties (secondary responsibility) involving indemnity and other matters.

c)    Employee benefits

Labor claims comprise claims filed by retired former employees of the Company and its wholly owned subsidiaries against the Copel Foundation, which will have consequential impact on the Company and its wholly owned subsidiaries, since additional contributions will be required.

d)    Civil

Actions involving billing, irregular procedure, administrative contracts and contractual fine, indemnity for accidents with the electric power grid and vehicles.

The balance also contains the amount being discussed by arbitration and under secrecy and confidentiality, in the discovery phase, without no decision being handed down.

The main lawsuits are as follows: 

Plaintiff: Mineradora Tibagiana Ltda.        Estimated amount: R$156,398

Action claiming compensation for alleged losses when this mining company was involved in the construction of the Mauá plant by the Energético Cruzeiro do Sul consortium in which Copel GeT has a 51% stake. The action challenges the validity of the mining permit granted by Mineradora Tibagiana for the Mauá job site and the indemnifying effects arising thereof.

Current status: action awaiting judgment in lower court.

Plaintiffs: franchises of the Agency / Copel store Estimated amount: R$54,114

Filing of two individual claims against Copel Distribuição regarding the franchise contracts of Copel branches/stores, with the main petition claiming an extension of the term of the contract and secondary petition to recognize the existence of a sub concession, with transfer of the services provided and full pass- through of the fees, amongst other amounts, currently have appeals awaiting trial.

Current status: awaiting judgment.

e)    Regulatory

The Company is challenging, both at the administrative and judicial levels, notifications issued by the Regulatory Agency of alleged violations against regulations. The main lawsuits are as follows:

Plaintiff: ANEEL  Estimated amount: R$18,922

Copel DIS filed an appeal against a decision by ANEEL's Director-General under Resolution No. 3,959 from December 8, 2015 imposing an inefficiency penalty on Copel DIS due to over-contracting for use of the distribution system (MUSD) with the National Power Network Operator (ONS), obtaining an injunction to suspend the requirement of such penalty.

Current status: awaiting judgment.

Plaintiff: Energia Sustentável do Brasil S.A. - ESBR Estimated amount: R$729,609

ESBR brought Ordinary Action No. 10426-71.2013.4.01.4100 against ANEEL in the federal courts of Rondônia, the decision on which: (i) excludes liability for the 535-day schedule overrun in the construction of the Jirau Hydropower Station; (ii) declares any obligations, penalties and costs imposed on ESBR as a result of the schedule overrun to be unenforceable, and (iii) annuls ANEEL Resolution No. 1,732/2013, which recognized a schedule overrun of only 52 days. An appeal has been brought by ANEEL, in progress at the TRF of the 1^st Region.

The practical outcome of the decision is that, by exempting ESBR, it exposed the distribution utilities with which it had concluded regulated power trading contracts (CCEARs)  including Copel DIS  to the spot market and spot prices during the period. The reason is that electricity trading rules require that all electricity consumed be covered by a contract.

The risk of loss in this case is rated ‘possible’, considering the amount of R$729,609, on December 31, 2017. If the actions are judged unfavorably, the amount will be classified as Sectorial Financial Asset to be recovered through tariff rates.

Current status: awaiting judgment.

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31. Equity

12 Months Ended

Dec. 31, 2017

EQUITY

Equity

31.1    Capital

Capital consists of common and preferred shares. Each common share entitles its holder to one vote in the general shareholders’ meetings. Preferred shares do not have voting rights and have two classes “A” and “B”.

According to Article 17 and following paragraphs of Federal Law No. 6,404/76, dividends paid to preferred shares must be at least 10% higher than those paid on common shares.

Class “A” preferred shares have priority in the reimbursement of capital and in the distribution of minimum dividends of 10% p.y. (non-cumulative), calculated based on the capital represented by this class of shares.

Class “B” preferred shares have priority in the reimbursement of capital and the right to the distribution of dividends, calculated as 25% of adjusted net income, pursuant to the corporate legislation and to the Company’s by-laws, calculated proportionately to the capital represented by the shares of this class. Dividends for Class “B” have priority only over the common shares and are only paid out of the remaining profits, following payment of priority dividends of class “A” shares.

The paid-in share capital is R$7,910,000. The different classes of shares (with no par value) and main shareholders are detailed below:

	Number of shares in units
Shareholders	Common		Class "A” Preferred		Class “B” preferred		Total
	in share	%	in share	%	in share	%	in share	%
State of Paraná	85,028,598	58.63	-	-	-	-	85,028,598	31.07
BNDES	38,298,775	26.41	-	-	27,282,006	21.26	65,580,781	23.96
Eletrobrás	1,530,774	1.06	-	-	-	-	1,530,774	0.56
Free float:
B3	18,691,826	12.89	76,763	23.36	68,879,476	53.69	87,648,065	32.03
NYSE	1,144,316	0.79	-	-	31,957,198	24.91	33,101,514	12.10
Latibex	-	-	-	-	128,231	0.10	128,231	0.05
Municipalities	178,393	0.12	9,326	2.84	3,471	-	191,190	0.07
Other shareholders	158,398	0.10	242,538	73.80	45,286	0.04	446,222	0.16
	145,031,080	100.00	328,627	100.00	128,295,668	100.00	273,655,375	100.00

31.2    Equity valuation adjustments

Fair values of fixed assets - deemed costs - were recognized on the first-time adoption of IFRS. The account “Equity value adjustments” was the balancing item of this adjustment, net of deferred income tax and social contribution, including under the equity method. The realization of such adjustments is recorded in the retained earnings account, to the extent of the depreciation or possible write-off of the valued items.

Adjustments arising from the changes in fair value involving financial assets available for sale, as well as actuarial gains and losses, are also recorded in this account.

	Equity Valuation Adjustments	Accumulated Other Comprehensive Income	Total
As of 01.01.2015	1,141,485	(164,521)	976,964
Adjustments to financial assets available for sale
Financial investments	-	633	633
Taxes on adjustments	-	(216)	(216)
Equity interest investments	-	(5)	(5)
Taxes on adjustments	-	(1)	(1)
Adjustments related to actuarial liabilities
Post-employment benefits	-	410,330	410,330
Taxes on adjustments	-	(139,059)	(139,059)
Post-employment benefits -  equity	-	19,660	19,660
Realization of equity evaluation adjustment
Deemed cost of fixed assets	(137,031)	-	(137,031)
Taxes on the adjustments	46,590	-	46,590
Attributed to non-controlling interest	-	(495)	(495)
As of 12.31.2015	1,051,044	126,328	1,177,372
Adjustments to financial assets available for sale
Financial investments	-	(2)	(2)
Equity interest investments	-	3,614	3,614
Taxes on adjustments	-	(1,229)	(1,229)
Adjustments related to actuarial liabilities
Post-employment benefits	-	(88,906)	(88,906)
Taxes on adjustments	-	30,174	30,174
Post-employment benefits -  equity	-	(852)	(852)
Realization of equity evaluation adjustment
Deemed cost of fixed assets	(154,102)	-	(154,102)
Taxes on the adjustments	52,395	-	52,395
Actuarial liabilities - investment realization	(19,933)	-	(19,933)
Attributed to non-controlling interest	-	(65)	(65)
As of 12.31.2016	929,404	69,062	998,466
Adjustments to financial assets available for sale
Financial investments	-	3	3
Taxes on adjustments	-	(1)	(1)
Equity interest investments	-	26,135	26,135
Taxes on adjustments	-	(8,887)	(8,887)
Adjustments related to actuarial liabilities
Post-employment benefits	-	(46,506)	(46,506)
Taxes on adjustments	-	16,827	16,827
Realization of equity evaluation adjustment
Deemed cost of fixed assets	(108,561)	-	(108,561)
Taxes on the adjustments	36,911	-	36,911
Gains on Investments in equity investments (Note 16.1)	-	(28,650)	(28,650)
Taxes on adjustments	-	9,741	9,741
Attributed to non-controlling interest	-	123	123
As of 12.31.2017	857,754	37,847	895,601

31.3    Legal reserve and profit retention reserve

5% of the net income for the year is allocated to the legal reserve, before any other allocation, limited to 20% of capital.

The profit retention reserve is designed to cover the Company's investment program, according to Article 196 of Law No. 6,404/1976. It is funded by retaining any remaining net profit after legal reserve constitution and interest on capital and dividends proposition.

31.4    Proposed dividend distribution

	12.31.2017	12.31.2016	12.31.2015
(1)  Calculation of minimum mandatory dividend (25%)
Net income (loss) for the year (a)	1,033,626	958,650	1,192,738
Legal Reserve (5%)	(51,681)	(47,933)	(59,637)
Realization of equity evaluation adjustment	71,650	101,707	90,441
Calculation basis for minimum mandatory dividends	1,053,595	1,012,424	1,223,542
	263,399	253,106	305,885
(2)  Total proposed distribution  (3 + 5)	289,401	282,947	326,795
(3)  Interest on own capital, net	266,000	282,947	198,000
Tax on interest on own capital	(26,002)	(29,841)	(20,910)
(4)  Interest on own capital, net	239,998	253,106	177,090
(5)  Dividends proposed	23,401	-	128,795
(6)  Total proposed distribution, net  (4 + 5)	263,399	253,106	305,885
Gross value of dividends per share:
Ordinary shares	1.00801	0.98539	1.13716
Class “A” preferred shares	2.89050	2.89050	2.52507
Class “B” preferred shares	1.10883	1.08410	1.25473
Gross amount of dividends per class of shares:
Ordinary shares	146,193	142,912	164,924
Class “A” preferred shares	950	949	960
Class “B” preferred shares	142,258	139,086	160,911
(a) The legal reserve, proposed dividends and other corporate impacts recorded in Equity of the financial statements for the years ended December 31, 2016 and 2015 were originally made based on the profit disclosed in those financial statements and did not change due to the restatement mentioned in Note 4.1 since the information available at the time indicated that the corporate impacts would be those approved by the appropriate bodies.

In accordance with legal and statutory requirements in effect, the basis for calculating the minimum mandatory dividends is obtained from the net income for the year, less the portion that will fund the legal reserve. However, Management decided to include in this basis the amount related to the realization of the equity value adjustments, specifically to compensate the effects coming from the increase of the depreciation expense arriving from the adoption of the new accounting standards. This procedure reflects the policy to distribute dividends to Company’s shareholders, which will be effective during the realization of the entire asset/liability valuation adjustments account.

The distribution of the minimum mandatory dividend is recognized as a liability in the Company’s financial statements at year-end.

The tax benefit of interest on capital is recorded in the statement of income in the moment of its recognition in accounts payable. 

31.5    Earnings per share - basic and diluted

	12.31.2017	12.31.2016 Restated	12.31.2015 Restated
Basic and diluted numerator
Basic and diluted earnings allocated by classes of shares, allocated
to controlling shareholders
Common shares	523,206	453,427	561,637
Class “A” preferred shares	1,304	1,197	1,620
Class “B” preferred shares	509,116	441,148	546,292
	1,033,626	895,772	1,109,549
Basic and diluted denominator
Weighted average of shares (in thousands):
Common shares	145,031,080	145,031,080	145,031,080
Class “A” preferred shares	328,627	348,531	380,291
Class “B” preferred shares	128,295,668	128,275,764	128,244,004
	273,655,375	273,655,375	273,655,375
Basic and diluted earnings per share attributable to shareholders of
parent company:
Common shares	3.60754	3.12641	3.87253
Class “A” preferred shares	3.96830	3.43906	4.25990
Class “B” preferred shares	3.96830	3.43906	4.25979

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32. Net Operating Revenue

12 Months Ended

Dec. 31, 2017

Net Operating Revenue

Net Operating Revenue

	Gross	PIS/Pasep		Regulatory	Service tax	Net revenues
	revenues	and Cofins	ICMS (VAT)	charges (32.2)	(ISSQN)	12.31.2017
Electricity sales to final customers	8,689,516	(749,683)	(2,039,245)	(1,219,055)	-	4,681,533
Residential	2,829,626	(242,916)	(771,902)	(433,080)	-	1,381,728
Industrial	2,382,314	(208,226)	(433,088)	(252,531)	-	1,488,469
Trade, services and other activities	1,908,426	(163,834)	(548,328)	(291,798)	-	904,466
Rural	772,465	(66,314)	(75,137)	(119,645)	-	511,369
Public entities	236,719	(20,322)	(46,506)	(36,418)	-	133,473
Public lighting	244,381	(20,979)	(70,811)	(37,359)	-	115,232
Public service	315,585	(27,092)	(93,473)	(48,224)	-	146,796
Electricity sales to distributors	3,529,770	(300,003)	-	(53,413)	-	3,176,354
Bilateral contracts	1,947,862	(203,994)	-	(30,656)	-	1,713,212
Electric Energy Trade Chamber - CCEE	1,077,943	(45,889)	-	(16,966)	-	1,015,088
CCEAR (auction)	367,970	(38,537)	-	(5,791)	-	323,642
Interest (Note 10.2)	82,160	-	-	-	-	82,160
Quota system	53,835	(11,583)	-	-	-	42,252
Use of the main distribution and transmission grid	6,442,761	(588,291)	(1,488,323)	(748,206)	-	3,617,941
Residential	2,025,400	(189,915)	(572,269)	(252,690)	-	1,010,526
Industrial	1,076,613	(96,059)	(385,725)	(126,842)	-	467,987
Trade, services and other activities	1,310,903	(122,168)	(386,320)	(162,367)	-	640,048
Rural	342,195	(32,056)	(25,811)	(43,365)	-	240,963
Public entities	174,427	(16,355)	(33,384)	(21,922)	-	102,766
Public lighting	167,907	(15,744)	(48,668)	(20,935)	-	82,560
Public service	126,795	(11,889)	(36,146)	(15,816)	-	62,944
Free consumers	663,248	(62,190)	-	(84,633)	-	516,425
Basic network, BN connections, and connection grid	1,387	(130)	-	(177)	-	1,080
Operating and maintenance income - O&M	113,324	(16,733)	-	(7,793)	-	88,798
Interest income (a)	440,562	(25,051)	-	(11,666)	-	403,845
Construction income	868,001	-	-	-	-	868,001
Fair value of assets from the indemnity for the concession	57,080	-	-	-	-	57,080
Telecommunications	426,773	(15,854)	(99,460)	-	(2,507)	308,952
Distribution of piped gas	621,992	(58,959)	(107,912)	-	(306)	454,815
Sectorial financial assets and liabilities result	767,040	(48,214)	-	-	-	718,826
Other operating revenue	171,356	(27,710)	-	-	(2,575)	141,071
Leasing and rent (32.1)	109,230	(17,664)	-	-	-	91,566
Income from rendering of services	30,247	(4,891)	-	-	(2,575)	22,781
Charged service	15,981	(2,584)	-	-	-	13,397
Other income	15,898	(2,571)	-	-	-	13,327
	21,574,289	(1,788,714)	(3,734,940)	(2,020,674)	(5,388)	14,024,573
CCEAR - Agreements for Power Trade on the Regulated Market
(a) Of the total gross revenue from Interest income, R$361,156 refers to the gain on RBSE assets (Note 10.4).

	Gross	PIS/Pasep		Regulatory	Service tax	Net revenues
	revenues	and Cofins	ICMS (VAT)	charges (32.2)	(ISSQN)	12.31.2016
Electricity sales to final customers	9,606,133	(884,681)	(2,426,940)	(1,063,007)	-	5,231,505
Residential	2,841,218	(298,659)	(790,401)	(380,973)	-	1,371,185
Industrial	3,029,411	(273,901)	(674,630)	(284,922)	-	1,795,958
Trade, services and other activities	2,130,228	(194,630)	(622,946)	(247,449)	-	1,065,203
Rural	815,079	(48,216)	(120,854)	(61,557)	-	584,452
Public entities	236,550	(21,881)	(48,148)	(27,986)	-	138,535
Public lighting	229,182	(21,199)	(66,481)	(26,962)	-	114,540
Public service	324,465	(26,195)	(103,480)	(33,155)	-	161,635
Electricity sales to distributors	2,963,349	(239,531)	-	(47,746)	-	2,676,072
Bilateral contracts	1,366,552	(134,439)	-	(23,361)	-	1,208,752
Electric Energy Trade Chamber - CCEE	753,392	(23,116)	-	(12,879)	-	717,397
CCEAR (auction)	673,154	(66,223)	-	(11,508)	-	595,423
Interest (Note 10.2)	96,783	-	-	-	-	96,783
Quota system	73,468	(15,753)	-	-	-	57,715
Use of the main distribution and transmission grid	6,974,829	(575,166)	(1,511,601)	(911,479)	-	3,976,583
Residential	2,060,305	(192,823)	(584,025)	(306,096)	-	977,361
Industrial	1,246,575	(112,443)	(391,804)	(177,993)	-	564,335
Trade, services and other activities	1,409,771	(131,352)	(402,233)	(208,471)	-	667,715
Rural	339,438	(31,752)	(15,451)	(51,196)	-	241,039
Public entities	168,823	(15,800)	(33,369)	(25,224)	-	94,430
Public lighting	167,255	(15,653)	(48,489)	(24,839)	-	78,274
Public service	125,928	(11,786)	(36,230)	(18,703)	-	59,209
Free consumers	398,024	(37,251)	-	(60,242)	-	300,531
Basic network, BN connections, and connection grid	1,494	(140)	-	(226)	-	1,128
Operating and maintenance income - O&M	151,984	(5,456)	-	(8,026)	-	138,502
Interest income (a)	905,232	(20,710)	-	(30,461)	-	854,061
Construction income	1,279,642	-	-	-	-	1,279,642
Fair value of assets from the indemnity for the concession	132,741	-	-	-	-	132,741
Telecommunications	357,361	(13,872)	(79,582)	-	(2,326)	261,581
Distribution of piped gas	647,579	(62,037)	(113,657)	-	-	471,885
Sectorial financial assets and liabilities result	(1,079,662)	-	-	-	-	(1,079,662)
Other operating revenue	179,820	(26,072)	-	-	(2,342)	151,406
Leasing and rent (32.1)	103,793	(15,049)	-	-	-	88,744
Income from rendering of services	32,575	(4,723)	-	-	(2,342)	25,510
Charged service	10,148	(1,471)	-	-	-	8,677
Other income	33,304	(4,829)	-	-	-	28,475
	21,061,792	(1,801,359)	(4,131,780)	(2,022,232)	(4,668)	13,101,753
(a) Of the total gross revenue from Interest income, R$809,639 refers to the gain on RBSE assets (Note 10.4).

	Gross	PIS/Pasep		Regulatory	Service tax	Net revenues
	revenues	and Cofins	ICMS (VAT)	charges (32.2)	(ISSQN)	12.31.2015
Electricity sales to final customers	11,289,201	(1,045,529)	(2,784,289)	(1,712,463)	-	5,746,920
Residential	3,554,995	(330,341)	(850,197)	(569,767)	-	1,804,690
Industrial	3,829,081	(352,086)	(910,291)	(517,248)	-	2,049,456
Trade, services and other activities	2,511,750	(233,626)	(720,302)	(401,855)	-	1,155,967
Rural	546,685	(50,800)	(68,351)	(88,196)	-	339,338
Public entities	273,120	(25,379)	(54,202)	(43,876)	-	149,663
Public lighting	271,036	(25,185)	(79,645)	(43,302)	-	122,904
Public service	302,534	(28,112)	(101,301)	(48,219)	-	124,902
Electricity sales to distributors	4,130,184	(350,796)	-	(71,947)	-	3,707,441
Bilateral contracts	1,160,503	(196,524)	-	(20,301)	-	943,678
Electric Energy Trade Chamber - CCEE	2,159,431	(18,079)	-	(37,774)	-	2,103,578
CCEAR (auction)	793,036	(134,295)	-	(13,872)	-	644,869
Quota system	17,214	(1,898)	-	-	-	15,316
Use of the main distribution and transmission grid	5,879,729	(547,565)	(1,420,129)	(1,523,530)	-	2,388,505
Residential	1,961,163	(183,621)	(547,296)	(523,264)	-	706,982
Industrial	1,280,283	(117,076)	(370,565)	(333,412)	-	459,230
Trade, services and other activities	1,399,336	(130,688)	(388,512)	(372,433)	-	507,703
Rural	300,297	(28,116)	(5,890)	(80,913)	-	185,378
Public entities	161,275	(15,100)	(31,870)	(43,164)	-	71,141
Public lighting	153,826	(14,402)	(44,553)	(41,027)	-	53,844
Public service	111,539	(10,443)	(31,443)	(29,757)	-	39,896
Free consumers	282,241	(26,426)	-	(76,104)	-	179,711
Basic network, BN connections, and connection grid	1,352	(127)	-	(365)	-	860
Operating and maintenance income - O&M	91,772	(11,643)	-	(12,466)	-	67,663
Interest income (a)	136,645	(9,923)	-	(10,627)	-	116,095
Construction income	1,196,324	-	-	-	-	1,196,324
Fair value of assets from the indemnity for the concession	217,713	-	-	-	-	217,713
Telecommunications	277,876	(10,760)	(55,038)	-	(2,151)	209,927
Distribution of piped gas	704,625	(66,877)	(111,349)	-	-	526,399
Sectorial financial assets and liabilities result	858,170	-	-	-	-	858,170
Other operating revenue	119,402	(22,545)	-	-	(2,412)	94,445
Leasing and rent (32.1)	88,008	(16,618)	-	-	-	71,390
Income from rendering of services	17,203	(3,248)	-	-	(2,412)	11,543
Charged service	8,773	(1,656)	-	-	-	7,117
Other income	5,418	(1,023)	-	-	-	4,395
	24,673,224	(2,044,072)	(4,370,805)	(3,307,940)	(4,563)	14,945,844

32.1    Leasing and rent

32.1.1     Revenues from leases and rentals

	12.31.2017	12.31.2016	12.31.2015
Equipment and framework	106,790	103,490	87,190
Facilities sharing	2,159	248	547
Real estate	281	55	271
	109,230	103,793	88,008

32.1.2     Receivables from non-cancelable leases

	Less than		Over	Total
	1 year	1 to 5 years	5 years	12.31.2017
Facilities sharing	1,079	5,396	13,622	20,097

32.2    Regulatory charges

	12.31.2017	12.31.2016	12.31.2015
Energy Development Account - "CDE Energia" (32.2.1)	718,154	790,117	497,667
Energy Development Account - "CDE Uso" (32.2.1)	708,555	876,361	1,494,630
Other charges - rate flags	420,027	203,671	1,120,218
Research and development and energy efficiency - R&D and EEP	117,390	100,039	126,656
Global Reversion Reserve - RGR quota	46,825	42,887	62,554
Inspection fee	9,723	9,157	6,215
	2,020,674	2,022,232	3,307,940

32.2.1     Energy Development Account - CDE

The primary objectives of the Energy Development Account (CDE) created by Law No. 10,438/2002 and amended by Law No. 12,783/2013, are: (i) universalization of the electric power service; (ii) subsidy to the low income residential subclass; (iii) Fuel Consumption Account - CCC; (iv) amortization of financial operations associated with the compensation upon the reversal of concessions or to meet the purposes of moderateness of tariffs; (v) competitiveness of the power produced by national mineral coal in the areas served by interlinked systems; (vi) competitiveness of the power produced by wind sources, small hydroelectric power plants, biomass, natural gas and other renewable sources; (vii) subsidy for tariff discounts to the distributors due to the loss of revenue from discounted granted on tariffs of use of electric power systems; (viii) administrative funding grants for management of CDE, CCC and RGR by CCEE; and (ix) compensation to the rural electrification cooperatives, concessionaires or permission holders by the tariff impact from the reduced density of load in relation to the supplying concessionaire. 

CDE’s quotas were originally defined based on the CCC figures for the 2001 Interconnected Systems, the values of which were adjusted annually starting in 2002 in proportion to the market growth of each agent, and in 2004 also by the IPCA. As of Law 12,783/2013, the system is changed and quotas are defined based on the resources needed to achieve its purposes and other revenues related to the CDE. The CDE charge incorporates:

i) annual quota of “CDE-Uso”: this quota is allocated to the financing of the objectives of the CDE, set forth in its annual budget, defined by the Federal Government, as provided in §§ 2 and 3 of art. 13 of Law 10,438/2002, with wording given by Law No. 12,783/2013.

ANEEL Resolution No. 2202/2017 defined the CDE-Uso quota, in the monthly amount of R$53,329 as of January 2017. However, as of February of the same year, the monthly amount of the quota was changed to R$61,159, established by ANEEL Resolution No. 2,204/2017;

ii) annual quota “CDE - Energia” (ACR account): this quota is intended for the discharge of credit operations contracted by CCEE in the management of the Regulated Contracting Environment - ACR Account, in compliance with Decree No. 8,222/2014, and pursuant to ANEEL Normative Resolution No. 612/2014.

The purpose of the ACR Account is to cover costs relating to involuntary spot market exposure and the costs of thermal power dispatching in 2014.

Resolution No. 1,863/2015 defined the value of the CDE quota (ACR Account) at R$46,638, as of June 2015. Beginning June 2016, by means of Resolution No. 2,004/2015, the amount of the quota was updated to R$49,362. In April 2017, the quota was reduced to R$37,907 until March 2018, and from April 2018 to March 2020, the quota will be R$49,362, as approved by Resolution No. 2,231/2017. These installments are updated annually, in accordance with the conditions contracted by CCEE for each of the loans made with the participating financial institutions; and

iii) annual quota CDE-Energia: destined to the return of the resources received by the distribution concessionaires, from January 2013 to January 2014, to cover costs relating to involuntary spot market exposure and the hydrological risk of the plants contracted on a regime of quotas, and the costs of thermal power dispatching for reasons of energy security, in compliance with Decree 7,895/2013 and Decree 8,203/2014.

From June 2016 to May 2017, the monthly amount of the CDE-Energia quota was established at R$18,947 by ANEEL Resolution No. 2,077/2016. From June 2017, the monthly quota was changed to R$20,138, by Resolution No. 2,204/2017.

Preliminary injunctions

As a result of preliminary injunctions in favor of the Brazilian Association of Large Industrial Consumers and Free Consumers - Abrace, and of the National Association of Energy Consumers - Anace and other associates, which challenge at court the tariff components of CDE-Uso and CDE-Energia, ANEEL, through Resolutions 1,967/2015, 1,986/2015 and 2,083/2016, ratified the tariff calculation deducting these charges from associates of those entities, as long as the preliminary injunctions granted in Judicial Proceedings No. 24648-39.2015.4.01.3400 and No. 0069262-32.2015.4.01.3400 / 16^th Federal Court are in effect.

On the other hand, by the preliminary injunction in favor of Abradee, the associated distributors are guaranteed the right of non-transfer, deducting from the portion of CDE-Uso and CDE-Energia the amounts not collected due to the effects of the preliminary injunction. This deduction, which covers all preliminary injunctions, was approved by ANEEL by Order No. 1,576/2016.

Moreover, in compliance with the preliminary injunction granted in the Judicial Proceedings No. 0028882 -30.2016.4.01.3400 of the 2^nd Federal Court, ANEEL, through Order No. 2,634/2016, ratified, regarding the 2016 tariff process, new Tariffs for Use of Distribution Systems - Tusd for Abrace members, effective as of June 29, 2016 for as long as the effects of the preliminary injunction relief remain. In addition to the Abrace and Anace associates, other companies have also obtained favorable injunctions, with publication of new tariffs.

By means of Resolution No. 2,255 of 06.20.2017, Article 14, the tariff components of the Energy Tariff (TE) in R$/MWh, which must be applied in compliance with the injunctions granted in lawsuits that remain for the 2017 tariff process. As shown in table 11 to this Resolution, the customer units included in injunctions 0069262-32.2015.4.01.3400, of the National Association of Energy Consumers - Anace, and No. 0028996- 66.2016.4.01.3400, of the Labor Union of Cement Industry - SNIC, currently totaling 7 customer units, will continue to benefit from the reduced tariffs.

Accordingly, Copel DIS has been carrying out the deduction of the payment of the CDE quota from the unbilled amounts resulting from these injunctions, thus not impacting the distributor’s result. The differences between the rate coverage for this charge and the amount actually paid, from the beginning of the preliminary injunction to December 2017, represent the amount of R$111,912 for CDE Uso and R$14,105 for CDE Energy.

32.3    Copel DIS periodic tariff adjustment

The annual tariff adjustment, which occurs between tariff reviews, is approved by ANEEL based on a formula defined in the concession agreement and on regulations established in Proret, which consider for unmanageable costs (Portion A) the variations incurred in the period and for manageable costs (Portion B) the IPCA variation, adjusted by applying the Factor X.

ANEEL’s Resolution No. 2,255 of June 20, 2017 approved the result of Copel DIS Annual Tariff Review and authorized a 5.85% average adjustment to be perceived by consumers, consisting of: -0.73% related to the inclusion of financial components; 1.07% from updating Portion B; 2.78% from adjusting Portion A; and 2.73% reflecting the withdrawal of the financial components from the previous tariff process.

This adjustment was fully applied to Copel DIS tariffs as of June 24, 2017.

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33. Operating Costs and Expenses

12 Months Ended

Dec. 31, 2017

Operating Costs And Expenses

Operating Costs and Expenses

	Operational costs	Selling expenses	General and administrative expenses	Other operating expenses, net	12.31.2017
Electricity purchased for resale (33.1)	(6,165,450)	-	-	-	(6,165,450)
Charge of the main distribution and transmission grid	(712,030)	-	-	-	(712,030)
Personnel and management (33.2)	(984,011)	(20,435)	(338,898)	-	(1,343,344)
Pension and healthcare plans (Note 25.3)	(175,479)	(2,424)	(59,694)	-	(237,597)
Materials and supplies	(71,535)	(968)	(10,621)	-	(83,124)
Materials and supplies for power electricity	(97,360)	-	-	-	(97,360)
Natural gas and supplies for gas business	(309,542)	-	-	-	(309,542)
Third-party services (33.3)	(386,435)	(18,826)	(116,254)	-	(521,515)
Depreciation and amortization	(686,007)	(16)	(32,070)	(13,506)	(731,599)
Estimated losses, provisions and reversals  (33.4)	122,782	(90,478)	-	(397,843)	(365,539)
Construction cost (33.5)	(1,003,881)	-	-	-	(1,003,881)
Other operating costs and expenses, net (33.6)	(196,942)	(35,903)	(128,138)	(52,967)	(413,950)
	(10,665,890)	(169,050)	(685,675)	(464,316)	(11,984,931)
	Operational costs	Selling expenses	General and administrative expenses	Other operating expenses, net	12.31.2016
Electricity purchased for resale (33.1)	(4,685,604)	-	-	-	(4,685,604)
Charge of the main distribution and transmission grid	(866,243)	-	-	-	(866,243)
Personnel and management (33.2)	(976,027)	(17,314)	(311,077)	-	(1,304,418)
Pension and healthcare plans (Note 25.3)	(192,880)	(2,616)	(64,271)	-	(259,767)
Materials and supplies	(71,747)	(851)	(8,865)	-	(81,463)
Materials and supplies for power electricity	(33,352)	-	-	-	(33,352)
Natural gas and supplies for gas business	(325,413)	-	-	-	(325,413)
Third-party services (33.3)	(369,442)	(53,659)	(127,392)	-	(550,493)
Depreciation and amortization	(664,470)	(31)	(30,290)	(13,505)	(708,296)
Estimated losses, provisions and reversals  (33.4)	(567,112)	(184,610)	-	(16,974)	(768,696)
Construction cost (33.5)	(1,280,745)	-	-	-	(1,280,745)
Other operating costs and expenses, net (33.6)	(201,080)	8,633	(199,250)	(23,159)	(414,856)
	(10,234,115)	(250,448)	(741,145)	(53,638)	(11,279,346)
			General and	Other
	Operational	Selling	administrative	operating
	costs	expenses	expenses	expenses, net	12.31.2015
Electricity purchased for resale (33.1)	(6,032,916)	-	-	-	(6,032,916)
Charge of the main distribution and transmission grid	(919,788)	-	-	-	(919,788)
Personnel and management (33.2)	(863,406)	(15,617)	(289,827)	-	(1,168,850)
Pension and healthcare plans (Note 25.3)	(196,238)	(2,388)	(55,701)	-	(254,327)
Materials and supplies	(66,968)	(748)	(8,986)	-	(76,702)
Materials and supplies for power electricity	(199,323)	-	-	-	(199,323)
Natural gas and supplies for gas business	(1,176,090)	-	-	-	(1,176,090)
Third-party services (33.3)	(365,745)	(41,876)	(111,882)	-	(519,503)
Depreciation and amortization	(600,240)	(35)	(68,558)	(7,639)	(676,472)
Estimated losses, provisions and reversals  (33.4)	66,029	(226,837)	-	(50,021)	(210,829)
Construction cost (33.5)	(1,251,004)	-	-	-	(1,251,004)
Other operating costs and expenses, net (33.6)	(193,627)	4,104	(135,652)	(100,959)	(426,134)
	(11,799,316)	(283,397)	(670,606)	(158,619)	(12,911,938)

33.1    Electricity purchased for resale

	12.31.2017	12.31.2016	12.31.2015
Purchase of Energy in the Regulated Environment - CCEAR	2,693,976	3,219,900	3,812,509
Electric Energy Trade Chamber - CCEE	1,766,091	535,656	982,388
Itaipu Binacional	1,117,957	1,089,804	1,567,844
Bilateral contracts	766,803	20,006	30,557
Program for incentive to alternative energy sources - Proinfa	217,646	242,910	177,946
Micro and mini generators and repurchase of customers	3,892	561	-
(-) PIS/Pasep/Cofins taxes on electricity purchased for resale	(400,915)	(423,233)	(538,328)
	6,165,450	4,685,604	6,032,916

33.2    Personnel and management

	12.31.2017	12.31.2016	12.31.2015
Personnel
Wages and salaries	806,119	801,789	735,072
Social charges on payroll	266,183	257,519	227,667
Meal assistance and education allowance	119,881	109,999	98,367
Provisions for profit sharing (a)	68,817	64,814	78,462
Compensation - Voluntary termination program/retirement	53,468	44,276	5,443
	1,314,468	1,278,397	1,145,011
Management
Wages and salaries	22,895	20,639	19,027
Social charges on payroll	5,635	5,136	4,645
Other expenses	346	246	167
	28,876	26,021	23,839
	1,343,344	1,304,418	1,168,850
(a) According to Federal Law No. 10,101/2000, State Decree No. 1,978/2007 and State Law No. 16,560/2010.

33.3    Third party services

	12.31.2017	12.31.2016	12.31.2015
Maintenance of electrical system	135,265	160,720	160,564
Maintenance of facilities	95,176	90,451	85,192
Communication, processing and transmission of data	94,230	61,317	72,042
Meter reading and bill delivery	49,647	49,462	44,399
Consumer service	29,789	21,000	20,478
Consulting and audit	21,589	41,396	19,120
Other services	95,819	126,147	117,708
	521,515	550,493	519,503

33.4    Estimated losses, provisions and reversals

	12.31.2017	12.31.2016	12.31.2015
Provision (reversal) for litigations	386,373	(21,408)	48,499
Provision of impairment of assets
Accounts receivable related to the concession compensation (Note 11.1)	(1,117)	75	-
Credits on sales and purchases of gas (Note 12.2)	(123,586)	87,479	-
Property, plant and equipment (Note 19.9)	1,921	494,023	(66,029)
Allowance for doubtful accounts (Client and Other credits)	90,589	179,908	226,838
Tax credits estimated losses	11,470	23,917	1,521
Estimated losses (reversion) in consortiums	(111)	4,702	-
	365,539	768,696	210,829

33.5    Construction cost

	12.31.2017	12.31.2016	12.31.2015
Third party services	437,788	495,309	504,197
Materials and supplies	387,278	588,414	574,132
Personnel	143,266	135,272	100,299
Others	35,549	61,750	72,376
	1,003,881	1,280,745	1,251,004

33.6    Other operating costs and expenses, net

	12.31.2017	12.31.2016	12.31.2015
Financial offset for the use of water resources	110,971	183,014	155,147
Taxes	87,759	29,443	24,237
Losses in the decommissioning and disposal of assets	58,569	43,496	53,266
Compensation	45,712	89,531	50,541
Leasing and rent (33.6.1)	32,037	35,453	33,961
Advertising and publicity	27,768	37,451	25,867
Result of the change in the investment valuation method	-	(52,107)	-
Result of disposal of investment (Note 16.1)	(28,650)	-	-
Other net costs and expenses	79,784	48,575	83,115
	413,950	414,856	426,134

33.6.1     Leases and rents

	12.31.2017	12.31.2016	12.31.2015
Real estate	29,749	29,911	27,830
Others	3,588	6,919	7,434
(-) PIS and Cofins credits	(1,300)	(1,377)	(1,303)
	32,037	35,453	33,961

33.6.2     Commitments from non-cancelable leases and rents

	Less than		Over	Total
	1 year	1 to 5 years	5 years	31.12.2017
Rental of wind farm lands	4,600	29,323	183,141	217,064

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34. Financial Results

12 Months Ended

Dec. 31, 2017

Financial Results

Financial Results

	12.31.2017	12.31.2016 Restated	12.31.2015 Restated
Financial income
Arrears charges on bills	191,554	221,673	168,796
Interest and monetary variation of CRC transfer (Note 8.1)	141,923	194,153	217,722
Return on financial investments held for trading	95,221	182,750	139,056
Remuneration of net sectorial assets and liabilities (Note 9.2)	20,493	27,734	121,401
Monetary variation over the Itaipu power purchase	17,777	39,283	25,198
Monetary variation and adjust to present value of accounts
payable related to the concession	10,813	1,116	2,122
Return on financial investments held for sale	19,302	13,497	16,160
Other financial income	202,227	223,730	79,172
	699,310	903,936	769,627
( - ) Financial expenses
Monetary and cambial variation and debt charges	993,970	1,072,875	751,524
Monetary variation and adjust to present value of accounts
payable related to the concession	65,418	90,480	101,072
Interest and monetary variation of CRC transfer (Note 8.1)	51,211	5,235	-
PIS/Pasep/Cofins taxes on interest on capital	45,196	40,607	42,627
Interest on R&D and EEP (Note 27.2)	34,345	41,781	34,060
Remuneration of net sectorial assets and liabilities (Note 9.2)	29,622	13,947	-
Monetary variation over the Itaipu power purchase	12,264	20,597	96,162
Provision for impairment of financial assets	5,372	4,300	99,031
Other financial expenses	210,352	208,770	72,853
	1,447,750	1,498,592	1,197,329
Net	(748,440)	(594,656)	(427,702)

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35. Operating Segments

12 Months Ended

Dec. 31, 2017

Operating Segments

Operating Segments

Operating segments are business activities that generate revenues and incur expenses, whose operating results are regularly reviewed by the executive boards of the Company and by key strategic decision makers responsible for allocating funds and assessing performance.

35.1    Products and services from which we generate revenues from the reportable segments

The Company operates in reportable segments identified by management, through the chief officers of each business area, taking into consideration the regulatory environments, the strategic business units, and the different products and services. These segments are managed separately, since each business and each company requires different technologies and strategies.

In 2017, 2016 and 2015, all sales have been to customers within Brazilian territory, as well as all noncurrent assets are located in national territory.

The Company did not identify any customer who individually accounts for more than 10% of total net revenues in 2017. 

The Company evaluates the performance of each segment based on information derived from accounting records.

The accounting policies of the operating segments are the same as those described in Note 4.

35.2    The Company’s reportable segments

The reportable segments of the Company, in accordance with IFRS 8 are:

Power generation and transmission (GET) - this segment comprises the generation of electric energy from hydraulic, wind, and thermal projects (GER) and the transport and transformation of the power generated by the Company, and the construction, operation, and maintenance of all power transmission substations and lines (TRA). For managers, the assets and liabilities of the generation and transmission segments are shown on an aggregate basis while their result is shown separately;

Power distribution (DIS) - this segment comprises the distribution of electric energy, the operation and maintenance of the distribution infrastructure, and related services.

Telecommunications (TEL) - this segment comprises telecommunications and general communications services.

GAS - this segment comprises the public service of piped natural gas distribution.

Power sale (COM) - this segment comprises the sale of electric energy, and related services; and

Holding Company (HOL) - this segment comprises participation in other companies.

35.3    Assets per reportable segment

ASSETS	Electric Energy		TEL	GAS	COM (a)	HOL	Intersegment operations	Total
12.31.2017	GET	DIS
TOTAL ASSETS	17,110,518	11,529,588	1,054,741	632,910	208,369	3,211,162	(584,911)	33,162,377
CURRENT ASSETS	1,461,512	3,609,663	102,002	151,966	187,966	1,035,545	(846,820)	5,701,834
NON-CURRENT ASSETS	15,649,006	7,919,925	952,739	480,944	20,403	2,175,617	261,909	27,460,543
Long term assets	4,037,312	2,167,690	69,543	437,056	17,703	2,019,192	(140,870)	8,607,626
Investments	2,424,081	1,362	-	-	2,457	115,765	26,978	2,570,643
Property, plant and equipment	8,924,508	-	866,489	-	57	38,396	-	9,829,450
Intangible assets	263,105	5,750,873	16,707	43,888	186	2,264	375,801	6,452,824
(a) In 2017, the sale of electric energy became a reportable segment.

ASSETS	Electric Energy		TEL	GAS	HOL	Intersegment operations	Total
12.31.2016 - Restated	GET	DIS
TOTAL ASSETS	15,433,988	10,085,455	856,510	526,477	3,351,656	(373,483)	29,880,603
CURRENT ASSETS	1,122,399	2,588,602	89,471	135,292	941,761	(640,284)	4,237,241
NON-CURRENT ASSETS	14,311,589	7,496,853	767,039	391,185	2,409,895	266,801	25,643,362
Long term assets	3,680,669	1,982,110	79,853	152,676	2,145,759	(136,332)	7,904,735
Investments	2,125,701	1,362	-	-	217,449	-	2,344,512
Property, plant and equipment	8,223,951	-	667,443	-	42,909	-	8,934,303
Intangible assets	281,268	5,513,381	19,743	238,509	3,778	403,133	6,459,812
ASSETS	Electric Energy		TEL	GAS	HOL	Intersegment  operations	Total
01.01.2016 - Restated	GET	DIS
TOTAL ASSETS	13,626,886	10,715,266	769,317	481,303	3,641,088	(390,189)	28,843,671
CURRENT ASSETS	2,126,024	4,155,554	179,898	103,579	873,169	(616,587)	6,821,637
NON-CURRENT ASSETS	11,500,862	6,559,712	589,419	377,724	2,767,919	226,398	22,022,034
Long term assets	1,568,330	1,426,826	59,031	71,016	2,016,463	(189,874)	4,951,792
Investments	1,525,356	1,374	-	-	705,754	-	2,232,484
Property, plant and equipment	8,138,199	-	512,068	-	42,415	-	8,692,682
Intangible assets	268,977	5,131,512	18,320	306,708	3,287	416,272	6,145,076

35.4    Statement of income per reportable segment 

STATEMENT OF INCOME	Electric Energy			TEL	GAS	COM (a)	HOL	Intersegment operations	Total
	GET		DIS
12.31.2017	GER	TRA
NET OPERATING REVENUES	3,176,811	819,623	9,358,664	380,550	515,563	664,495	-	(891,133)	14,024,573
Net operating revenues - third-parties	2,851,644	640,199	9,324,633	306,473	510,010	664,495	-	(272,881)	14,024,573
Net operating revenues - between segments	325,167	179,424	34,031	74,077	5,553	-	-	(618,252)	-
OPERATING COSTS AND EXPENSES	(1,868,390)	(546,510)	(9,071,359)	(286,363)	(309,213)	(654,445)	(139,784)	891,133	(11,984,931)
Energy purchased for resale	(390,019)	-	(5,717,970)	-	-	(654,026)	-	596,565	(6,165,450)
Charges for use of the main transmission grid	(352,958)	-	(554,805)	-	-	-	-	195,733	(712,030)
Personnel and management	(218,456)	(122,515)	(822,963)	(107,874)	(35,761)	(12,993)	(22,782)	-	(1,343,344)
Pension and healthcare plans	(38,782)	(22,733)	(154,285)	(14,800)	(3,577)	(1,415)	(2,005)	-	(237,597)
Materials and supplies	(12,463)	(4,732)	(60,320)	(2,978)	(1,936)	(27)	(668)	-	(83,124)
Raw materials and supplies for generation	(102,719)	-	-	-	-	-	-	5,359	(97,360)
Natural gas and supplies for gas business	-	-	-	-	(309,542)	-	-	-	(309,542)
Third party services	(120,993)	(24,609)	(347,393)	(67,612)	(22,670)	(1,280)	(15,089)	78,131	(521,515)
Depreciation and amortization	(368,987)	(7,201)	(285,835)	(39,553)	(28,753)	(9)	(1,261)	-	(731,599)
Provision/reversal for litigations	(39,733)	(81,210)	(168,600)	(3,648)	854	(156)	(93,880)	-	(386,373)
Impairment of assets	3,886	-	-	-	123,586	-	(4,690)	-	122,782
Other estimated losses, provisions and reversals	(9,397)	1,107	(83,916)	(8,309)	(1,433)	-	-	-	(101,948)
Construction cost	-	(272,216)	(717,351)	-	(14,314)	-	-	-	(1,003,881)
Other operating costs and expenses, net	(217,769)	(12,401)	(157,921)	(41,589)	(15,667)	15,461	591	15,345	(413,950)
EQUITY IN EARNINGS OF INVESTEES	(5,777)	93,145	-	-	-	(564)	14,935	-	101,739
PROFIT (LOSS) BEFORE FINANCIAL INCOME AND TAX	1,302,644	366,258	287,305	94,187	206,350	9,486	(124,849)	-	2,141,381
Financial income	73,433	13,313	380,597	11,828	38,821	6,515	186,660	(11,857)	699,310
Financial expenses	(565,837)	(123,707)	(343,540)	(30,691)	(64,433)	(322)	(331,077)	11,857	(1,447,750)
OPERATING PROFIT (LOSS)	810,240	255,864	324,362	75,324	180,738	15,679	(269,266)	-	1,392,941
Income Tax and Social Contribution	(191,899)	(30,515)	22,893	(21,272)	(66,785)	(2,638)	15,530	-	(274,686)
NET INCOME (LOSS)	618,341	225,349	347,255	54,052	113,953	13,041	(253,736)	-	1,118,255
(a) In 2017, the sale of electric energy became a reportable segment.

STATEMENT OF INCOME	Electric Energy			TEL	GAS	HOL	Intersegment operations	Total
	GET		DIS
12.31.2016 - Restated	GER	TRA
NET OPERATING REVENUES	2,927,680	1,491,547	8,344,765	325,115	542,822	6,238	(536,414)	13,101,753
Net operating revenues - third-parties	2,618,869	1,406,335	8,313,141	258,794	498,376	6,238	-	13,101,753
Net operating revenues - between segments	308,811	85,212	31,624	66,321	44,446	-	(536,414)	-
OPERATING COSTS AND EXPENSES	(2,032,767)	(605,202)	(8,502,377)	(241,848)	(534,817)	101,251	536,414	(11,279,346)
Energy purchased for resale	(92,050)	-	(4,893,230)	-	-	(9,119)	308,795	(4,685,604)
Charges for use of the main transmission grid	(322,849)	-	(642,753)	-	-	-	99,359	(866,243)
Personnel and management	(208,887)	(116,966)	(804,974)	(101,397)	(32,765)	(39,429)	-	(1,304,418)
Pension and healthcare plans	(43,251)	(24,171)	(163,329)	(18,827)	(3,596)	(6,593)	-	(259,767)
Materials and supplies	(12,768)	(5,017)	(59,178)	(2,044)	(1,768)	(688)	-	(81,463)
Raw materials and supplies for generation	(77,797)	-	-	-	-	-	44,445	(33,352)
Natural gas and supplies for gas business	-	-	-	-	(325,413)	-	-	(325,413)
Third party services	(157,602)	(24,030)	(348,479)	(46,552)	(20,082)	(26,755)	73,007	(550,493)
Depreciation and amortization	(369,352)	(3,697)	(274,180)	(34,645)	(25,251)	(1,171)	-	(708,296)
Provision/reversal for litigations	(1,086)	(9,234)	(128,899)	(4,653)	(1,036)	166,316	-	21,408
Impairment of assets	(494,098)	-	-	-	(87,479)	-	-	(581,577)
Other estimated losses, provisions and reversals	(30,700)	(975)	(171,045)	(2,598)	(3,209)	-	-	(208,527)
Construction cost	-	(406,345)	(849,275)	-	(25,125)	-	-	(1,280,745)
Other operating costs and expenses, net	(222,327)	(14,767)	(167,035)	(31,132)	(9,093)	18,690	10,808	(414,856)
EQUITY IN EARNINGS OF INVESTEES	(55,284)	117,970	-	-	-	103,725	-	166,411
PROFIT (LOSS) BEFORE FINANCIAL INCOME AND TAX	894,913	1,004,315	(157,612)	83,267	8,005	211,214	-	2,044,102
Financial income	130,077	21,339	396,880	13,489	13,551	331,646	(3,046)	903,936
Financial expenses	(617,341)	(108,538)	(401,863)	(23,100)	(14,973)	(335,823)	3,046	(1,498,592)
OPERATING PROFIT (LOSS)	407,649	917,116	(162,595)	73,656	6,583	207,037	-	1,449,446
Income Tax and Social Contribution	(205,027)	(220,512)	(17,851)	(15,324)	(1,632)	(59,344)	-	(519,690)
NET INCOME (LOSS)	202,622	696,604	(180,446)	58,332	4,951	147,693	-	929,756

STATEMENT OF INCOME	Electric Energy			TEL	GAS	HOL	Intersegment operations	Total
	GET		DIS
01.01.2016 - Restated	GER	TRA
NET OPERATING REVENUES	4,264,197	501,387	9,797,855	272,247	1,391,474	-	(1,281,316)	14,945,844
Net operating revenues - third-parties	3,954,296	420,451	9,770,086	207,091	593,920	-	-	14,945,844
Net operating revenues - between segments	309,901	80,936	27,769	65,156	797,554	-	(1,281,316)	-
OPERATING COSTS AND EXPENSES	(2,580,045)	(394,015)	(9,516,397)	(203,878)	(1,360,357)	(138,672)	1,281,426	(12,911,938)
Energy purchased for resale	(309,682)	-	(6,007,222)	-	-	-	283,988	(6,032,916)
Charges for use of the main transmission grid	(294,660)	-	(706,680)	-	-	-	81,552	(919,788)
Personnel and management	(186,385)	(79,873)	(699,891)	(87,393)	(30,715)	(84,593)	-	(1,168,850)
Pension and healthcare plans	(40,325)	(18,477)	(165,635)	(17,516)	(3,264)	(9,110)	-	(254,327)
Materials and supplies	(12,502)	(3,399)	(55,531)	(2,745)	(1,937)	(588)	-	(76,702)
Raw materials and supplies for generation	(996,679)	-	-	-	-	-	797,356	(199,323)
Natural gas and supplies for gas business	-	-	-	-	(1,176,090)	-	-	(1,176,090)
Third party services	(184,228)	(20,476)	(353,773)	(35,900)	(20,282)	(15,472)	110,628	(519,503)
Depreciation and amortization	(369,778)	(3,399)	(243,645)	(31,510)	(21,532)	(6,608)	-	(676,472)
Provision/reversal for litigations	89,726	35,061	(164,615)	(3,742)	(7,744)	2,813	-	(48,501)
Impairment of assets	66,029	-	-	-	-	-	-	66,029
Other estimated losses, provisions and reversals	(122,700)	-	(104,121)	(987)	(549)	(7)	7	(228,357)
Construction cost	-	(287,247)	(896,924)	-	(66,833)	-	-	(1,251,004)
Other operating costs and expenses, net	(218,861)	(16,205)	(118,360)	(24,085)	(31,411)	(25,107)	7,895	(426,134)
EQUITY IN EARNINGS OF INVESTEES	(4,955)	22,853	-	-	-	69,692	-	87,590
PROFIT (LOSS) BEFORE FINANCIAL INCOME AND TAX	1,679,197	130,225	281,458	68,369	31,117	(68,980)	110	2,121,496
Financial income	114,767	33,198	354,626	5,939	14,968	248,350	(2,221)	769,627
Financial expenses	(513,822)	(9,583)	(340,439)	(6,459)	(13,898)	(315,252)	2,124	(1,197,329)
OPERATING PROFIT (LOSS)	1,280,142	153,840	295,645	67,849	32,187	(135,882)	13	1,693,794
Income Tax and Social Contribution	(392,507)	(30,966)	(89,591)	(13,205)	(9,119)	3,159	-	(532,229)
NET INCOME (LOSS)	887,635	122,874	206,054	54,644	23,068	(132,723)	13	1,161,565

35.5    Additions to noncurrent assets by reportable segment

	Electric Energy		TEL	GAS	COM (a)	HOL	TOTAL
12.31.2017	GET	DIS
Property, plant and equipment
Additions	1,077,088	-	238,944	-	7	376	1,316,415
Intangible assets
Additions	3,996	757,709	2,200	13,745	101	635	778,386
(a) In 2017, the sale of electric energy became a reportable segment.

	Electric Energy		TEL	GAS	HOL	TOTAL
12.31.2016	GET	DIS
Property, plant and equipment
Additions	619,964	-	187,313	-	556	807,833
Intangible assets
Additions	3,207	892,693	6,447	25,847	533	928,727

	Electric Energy		TEL	GAS	HOL	TOTAL
01.01.2016	GET	DIS
Property, plant and equipment
Additions	724,538	-	100,998	-	186	825,722
Reversal of estimated losses	56,405	-	-	-	-	56,405
	780,943	-	100,998	-	186	882,127
Intangible assets
Additions	5,343	888,906	4,427	69,592	534	968,802

XML

36. Financial Instruments

12 Months Ended

Dec. 31, 2017

Financial Instruments

Financial Instruments

36.1    Categories and determination of fair value of financial instruments 

	Note	Level	12.31.2017		12.31.2016 - Restated		01.01.2016 - Restated
			Book value	Fair value	Book value	Fair value	Book value	Fair value
Financial assets
Fair value through profit or loss
Cash and cash equivalents (a)	5	1	1,040,075	1,040,075	982,073	982,073	1,480,727	1,480,727
Bonds and securities (b)	6	1	-	-	3,385	3,385	2,565	2,565
Bonds and securities (b)	6	2	7,172	7,172	125,294	125,294	221,889	221,889
			1,047,247	1,047,247	1,110,752	1,110,752	1,705,181	1,705,181
Loans and receivables
Pledges and restricted deposits linked (a)		1	59,372	59,372	1,294	1,294	2,000	2,000
Trade accounts receivable (a)	7	1	2,994,322	2,994,322	2,488,141	2,488,141	3,107,889	3,107,889
CRC Transferred to the State Government of Paraná (d)	8	2	1,516,362	1,620,212	1,522,735	1,610,269	1,383,242	1,343,497
Sectorial financial assets (a)	9	1	343,218	343,218	-	-	1,045,662	1,045,662
Accounts receivable related to the concession (e)	10	1	3,219,437	3,219,437	2,612,418	2,612,418	943,473	943,473
Accounts receivable related to the concession - bonus from the grant (f)	10	2	606,479	694,463	586,706	673,545	-	-
State of Paraná - Government Programs (a)	15.1	1	130,417	130,417	155,141	155,141	187,048	187,048
Mutual - related parties	15.2	1	38,169	38,169	28,968	28,968	-	-
Collaterals and escrow accounts STN (c)	23.1	2	75,665	57,188	73,074	47,166	86,137	51,414
			8,983,441	9,156,798	7,468,477	7,616,942	6,755,451	6,680,983
Available for sale
Bonds and securities (b)	6	1	687	687	1,567	1,567	2,728	2,728
Bonds and securities (b)	6	2	211,804	211,804	201,499	201,499	158,449	158,449
Accounts receivable related to the concession (g)	10	3	684,206	684,206	614,806	614,806	424,140	424,140
Accounts receivable related to the concession compensation (h)	11	3	68,859	68,859	67,401	67,401	219,556	219,556
Other temporary investments (i)	16	1	8,958	8,958	408,297	408,297	17,626	17,626
Other temporary investments (i)	16	2	9,769	9,769	-	-	-	-
			984,283	984,283	1,293,570	1,293,570	822,499	822,499
Total financial assets			11,014,971	11,188,328	9,872,799	10,021,264	9,283,131	9,208,663
Financial liabilities
Other financial liabilities
Sectorial financial liabilities (a)	9	1	283,519	283,519	278,992	278,992	-	-
Ordinary financing of taxes with the federal tax authorities (c)	13.3	2	148,845	142,702	198,527	183,573	193,739	171,119
Special Tax Regularization Program - Pert (c)	13.3	2	533,671	431,036	-	-	-	-
Suppliers (a)	22	1	1,727,046	1,727,046	1,292,350	1,292,350	1,619,049	1,619,049
Loans and financing (c)	23	2	3,759,505	3,569,856	4,046,293	3,677,926	4,077,060	3,539,257
Debentures (j)	24	1	6,070,978	6,070,978	4,790,809	4,790,809	3,683,928	3,683,928
Payable related to concession (k)	28	3	554,954	645,904	565,542	640,839	535,665	651,403
Total financial liabilities			13,078,518	12,871,041	11,172,513	10,864,489	10,109,441	9,664,756
Different levels are defined as follow s:
Level 1: Obtained from quoted prices (not adjusted) in active markets for identical assets and liabilities;
Level 2: obtained through other variables in addition to quoted prices included in Level 1, which are observable for the assets or liabilities;
Level 3: obtained through assessment techniques which include variables for the assets or liabilities, which however are not based on observable market data.

Determining fair values 

a)	Equivalent to their respective carrying values due to their nature and terms of realization.
b)	Calculated according to information made available by the financial agents and to the market values of the bonds issued by the Brazilian government.
c)	Calculated based on the cost of the last issue by the Company, 126.0% of the CDI for discount of the expected payment flows.
d)		The Company based its calculation on the comparison with a long-term and post-fixed National Treasury Bond (NTN-B) maturing on August 15, 2024, which yields approximately 4.47% p.y. plus the IPCA inflation index.
e)		Criteria and assumptions disclosed in note 4.3.9.
f)		Receivables related to the concession agreement for providing electricity generation services under quota arrangements at their fair value calculated by expected cash inflows discounted at the rate established in ANEEL auction notice 12/2015 (9.04%).
g)		Criteria and assumptions disclosed in Note 4.3.9 to the financial statements for the year ended December 31, 2017. The changes in 2017 are shown in Note 10.1.
h)		The fair values of generation assets approximate their book values, according to Note 4.3.10.
i)		Calculated according to the price quotations published in an active market, for assets classified as level 1, and determined in view of the comparative assessment model for assets classified as level 2.
j)		Calculated from the Unit Price quotation (PU) for December 29, 2017, obtained from the Brazilian Association of Financial and Capital Markets (Anbima), net of financial cost to amortize.
k)		Real net discount rate of 8.11% p.a., in line with the Company's estimated rate for long-term projects.

36.2    Financial risk management

The Company's business activities are exposed to the following risks arising from financial instruments:

36.2.1     Credit risk

Credit risk is the risk of the Company incurring losses due to a customer or financial instrument counterpart, resulting from failure in complying with contract obligations.

Exposure to credit risk	12.31.2017	12.31.2016 Restated	01.01.2016 Restated
Cash and cash equivalents (a)	1,040,075	982,073	1,480,727
Bonds and securities (a)	219,663	331,745	385,631
Pledges and restricted deposits linked (a)	135,037	74,368	88,137
Trade accounts receivable (b)	2,994,322	2,488,141	3,107,889
CRC Transferred to the State Government of Paraná (c)	1,516,362	1,522,735	1,383,242
Sectorial financial assets (d)	343,218	-	1,045,662
Accounts receivable related to the concession (e)	3,903,643	3,227,224	1,367,613
Accounts receivable related to the concession - Bonus from the grant (f)	606,479	586,706	-
Accounts receivable related to the concession compensation (g)	68,859	67,401	219,556
State of Paraná - Government Programs (h)	130,417	155,141	187,048
Mutual - related parties	38,169	28,968	-
Other temporary investments (i)	18,727	408,297	17,626
	11,014,971	9,872,799	9,283,131

a)	The Company’s Management manages the credit risk of its assets in accordance with the Group's policy of investing virtually all of its funds in federal banking institutions. As a result of legal and/or regulatory requirements, in exceptional circumstances the Company may invest funds in prime private banks.
b)	The risk arises from the possibility that the Company might incur in losses resulting from difficulties to receive its billings to customers. This risk is closely related to internal and external factors of Copel. To mitigate this type of risk the Company manages its accounts receivable, detecting customer groups that pose the greatest risk of default, cutting off energy supplies and implementing specific collection policies.
c)	Management believes this credit risk is low because repayments are secured by funds from dividends.
d)	Management believes this risk is very low because these contracts assure an unconditional right to be paid in cash by the concession Granting Authority at the end of the concession period for any infrastructure investments not recovered through tariffs.
e)	Management believes this risk is very low because these contracts assure an unconditional right to be paid in cash by the concession Granting Authority at the end of the concession period for any infrastructure investments not recovered through tariffs by the end of the period, specifically for the transmission business, since RAP is guaranteed revenue that does not involve demand risk. For investments made in infrastructure and that were not recovered through tariff until the end of the concession, the agreements assure the right to receive cash until the end of the concession to be paid by the Granting Authority. For the amount relating to RBSE assets existing on May 31, 2000, ANEEL published Normative Resolution 589/2013, which defines criteria for calculating the New Replacement Value (VNR). Given that on April 20, 2016, through MME Ordinance 120, the Granting Authority defined the means and period for receiving this asset regulated by. ANEEL Normative Resolution 762/2017, Management considers the risk of this credit to be low, even considering the injunctions that temporarily reduced the RAP receivable, regarding the cost of equity determined in RSBE’s assets from January 2013 to June 2017, as described in Note 10.4.
f)	Management considers the risk of this credit to be very low, as the contract for the sale of energy by quota guarantees the receipt of an Annual Generation Revenue - RAG guaranteed which includes the annual amortization of this amount during the concession term.
g)	For the generation concession assets, ANEEL published Normative Resolution 596/2013, which defines criteria for calculating the New Replacement Value (VNR), for indemnity purposes. Although the Granting Authority has not yet disclosed the means of remunerating these assets and there are uncertainties as to approval or ratification of investments made in this respect, Management believes that compensation for these assets indicates the recoverability of the recorded balance.

h) Management believes this credit risk is very low because these are specific programs together with the State Government to highlight the Luz Fraterna program (Note 37.a).

i)  The risk arises from the possibility that the Company might incur losses resulting from the volatility on the stock market. This type of risk involves external factors and has been managed through periodic assessment of the variations occurred in the market.

36.2.2 Liquidity risk

The Company's liquidity risk consists of the possibility of insufficient funds, cash or other financial asset to settle obligations on scheduled dates.

The Company manages liquidity risk relying on a set of methodologies, procedures and instruments applied for a permanent control over financial processes to ensure a proper management of risks.

Investments are financed by incurring medium and long-term debt with financial institutions and capital markets.

Short, medium and long-term business projections are made and submitted to management bodies for evaluation. The budget for the next fiscal year is annually approved.

Medium and long-term business projections cover monthly periods over the next five years. Short-term projections consider daily periods covering only the next 90 days.

The Company permanently monitors the volume of funds to be settled by controlling cash flows to reduce funding costs, the risk involved in the renewal of loan agreements and compliance with the financial investment policy, while at the same time keeping minimum cash levels.

The following table shows the expected undiscounted settlement amounts in each time range. Projections were based on financial indicators linked to the related financial instruments and forecast according to average market expectations as disclosed on the Central Bank of Brazil's Focus Report, which provides the average expectations of market analysts for these indicators for the current year and the following year. From 2021, 2020 indicators are repeated through the forecast period.

	Interest (a)	Less than	1 to 3	3 months		Over	Total
		1 month	months	to 1 year	1 to 5 years	5 years	liabilities
12.31.2017
Loans and financing	Note 23	67,457	150,634	775,871	2,429,424	1,340,528	4,763,914
Debentures	Note 24	16,985	22,149	1,923,880	5,160,164	453,807	7,576,985
Payable related to concession	Rate of return +
use of public property	IGP-M and IPCA	5,429	10,859	49,777	293,984	1,455,541	1,815,590
Suppliers	-	1,305,653	174,478	143,558	103,357	-	1,727,046
Ordinary financing of taxes
with the federal tax authorities	Selic	5,535	11,141	51,261	89,860	-	157,797
Pert	Selic	3,693	7,445	34,469	214,111	509,027	768,745
Sectorial financial liabilities	Selic	16,159	32,583	151,095	100,805	-	300,642
		1,420,911	409,289	3,129,911	8,391,705	3,758,903	17,110,719
12.31.2016
Loans and financing	Note 23	90,265	164,214	1,588,764	1,873,952	1,556,703	5,273,898
Debentures	Note 24	8,725	19,929	1,545,694	4,147,064	583,869	6,305,281
Payable related to concession	Rate of return +
use of public property	IGP-M and IPCA	5,494	10,988	50,331	300,343	1,850,518	2,217,674
Suppliers	-	1,106,430	21,619	124,060	40,239	2	1,292,350
Ordinary financing of taxes
with the federal tax authorities	Selic	5,133	10,392	48,578	161,534	-	225,637
Sectorial financial liabilities	Selic	13,071	26,537	125,315	144,590	-	309,513
		1,229,118	253,679	3,482,742	6,667,722	3,991,092	15,624,353
(a) Effective interest rate - weighted average.

As at December 31, 2017, Copel recorded a negative net working capital of R$408,080 (R$1,418,795 as at December 31, 2016). The Company's Management has been monitoring the liquidity and taking actions to balance the short-term financial capacity, preserving the Company's investment programs, as well as seeking debt extension, as described in Note 36.3.

As disclosed in Notes 23.5 and 24.3, the Company has loans and financing agreements and debentures with covenants that if breached may have their payment accelerated.

36.2.3     Market risk

Market risk it is the risk that fair value or the future cash flows of a financial instrument shall oscillate due to changes in market prices, such as currency rates, interest rates and stock price. The purpose of managing this risk is to control exposures within acceptable limits, while optimizing return.

a)    Foreign currency risk (US Dollar)

This risk comprises the possibility of losses due to fluctuations in exchange rates, which may reduce assets or increase liabilities denominated in foreign currencies.

The Company’s foreign currency indebtedness is not significant and it is not exposed to foreign exchange derivatives. The Company monitors all relevant exchange rates.

The effect of the exchange rate variation resulting from the power purchase agreement with Eletrobras (Itaipu) is passed on to customers in Copel DIS's next tariff adjustment.

The exchange rate risk posed by the purchase of gas arises from the possibility of Compagas reporting losses on the fluctuations in exchange rates, increasing the amount in Reais of the accounts payable related to the gas acquired from Petrobras. This risk is mitigated by the monitoring and transfer of the price fluctuation through tariff, when possible. Compagas monitors these fluctuations on an ongoing basis.

Sensitivity analysis of foreign currency risk

The Company has developed a sensitivity analysis in order to measure the impact of the devaluation of the U.S. dollar on its loans and financing subject to exchange risk.

The baseline takes into account the existing balances in each account as of December 31, 2017 and the probable scenario assumes a variation in the exchange rate - end of period (R$/US$3.30) based on the median market expectation for 2018 reported in the Central Bank’s Focus report of February 2, 2018. For the scenarios 1 and 2, deteriorations of 25% and 50%, respectively, were considered for the main risk factor for the financial instrument compared to the rate used in the probable scenario.

.		Baseline	Projected scenarios - Dec.2018
Foreign exchange risk	Risk	12.31.2017	Probable	Scenario 1	Scenario 2
.
Financial assets
Collaterals and escrow accounts - STN	USD depreciation	75,665	(183)	(19,053)	(37,924)
.		75,665	(183)	(19,053)	(37,924)
Financial liabilities
Loans and financing - STN	USD appreciation	(89,270)	216	(22,048)	(44,311)
Suppliers
Eletrobras (Itaipu)	USD appreciation	(215,761)	522	(53,288)	(107,098)
Acquisition of gas	USD appreciation	(27,001)	65	(6,669)	(13,403)
		(332,032)	803	(82,005)	(164,812)

In addition to the sensitivity analysis required by CVM Resolution No. 475/2008, the Company evaluates its financial instruments considering the possible effects on profit and loss and equity of the risks evaluated by Company management on the reporting date for the financial instruments, as recommended by IFRS 7 - Financial Instruments. Disclosure. Based on the equity position and the notional value of the financial instruments held as of December 31, 2017, it is estimated that these effects will approximate the amounts stated in the above table in the column for the forecast probable scenario, since the assumptions used by the Company are similar to those previously described.

b)    Interest rate and monetary variation risk

This risk comprises the possibility of losses due to fluctuations in interest rates or other indicators, which may reduce financial income or financial expenses or increase the financial expenses related to the assets and liabilities raised in the market.

The Company has not engaged in transactions with derivatives to cover this risk, but it has continually monitored interest rates and market indicators, in order to assess the potential need for such transactions.

Sensitivity analysis of interest rate and monetary variation risk

The Company has developed a sensitivity analysis in order to measure the impact of variable interest rates and monetary variations on its financial assets and liabilities subject to these risks.

The baseline scenario takes into account the existing balances in each account as of December 31, 2017 while the ‘probable’ scenario assumes balances reflecting varying indicators as follows: CDI/Selic - 6.75%, IPCA - 3.94%, IGP DI - 4.50%, IGP-M - 4.56% and TJLP - 6.75%, estimated as market average projections for 2018 according to the Focus Report issued by the Central Bank of Brazil as of February 2, 2018, except TJLP that considers the rate set by the National Monetary Council for the first quarter of 2018.

For the scenarios 1 and 2, deteriorations of 25% and 50%, respectively, were considered for the main risk factor for the financial instrument compared to the rate used in the probable scenario.

	Risk	Baseline 12.31.2017	Projected scenarios - Dec.2018
Interest rate risk and monetary variation			Probable	Scenario 1	Scenario 2
.
Financial assets
Bonds and securities	Low CDI/SELIC	219,663	14,827	11,115	7,424
Collaterals and escrow accounts	Low CDI/SELIC	59,372	4,008	3,005	2,006
CRC transferred to the State Government of Paraná	Low IGP-DI	1,516,362	68,236	51,177	34,118
Sectorial financial assets	Low Selic	343,218	23,167	17,375	11,584
Accounts receivable related to the concession	Low IPCA	4,510,122	169,981	127,486	84,991
Accounts receivable related to the concession compensation	Undefined (a)	68,859	-	-	-
State of Paraná - Government Programs	No risk	130,417	-	-	-
Mutual - related parties	No risk	38,169	-	-	-
		6,886,182	280,219	210,158	140,123
Financial liabilities
Loans and financing
Banco do Brasil	High CDI	(1,165,123)	(78,646)	(98,307)	(117,969)
BNDES	High TJLP	(1,510,327)	(101,947)	(127,434)	(152,921)
Promissory notes	High CDI	(529,919)	(35,770)	(44,712)	(53,654)
Banco do Brasil - Distribution of Funds from BNDES	High TJLP	(118,373)	(7,990)	(9,988)	(11,985)
Caixa Econômica Federal	High TJLP	(498)	(34)	(42)	(50)
Other	No risk	(345,995)	-	-	-
Debentures	High CDI/SELIC	(5,358,247)	(361,682)	(452,102)	(542,523)
Debentures	High IPCA	(545,967)	(21,511)	(26,889)	(32,267)
Debentures	High TJLP	(166,764)	(11,257)	(14,071)	(16,885)
Suppliers - renegotiation of gas	High IGP-M	(73,076)	(3,332)	(4,165)	(4,998)
Sectorial financial liabilities	High Selic	(283,519)	(19,138)	(23,922)	(28,706)
Ordinary financing of taxes with the federal tax authorities	High Selic	(148,845)	(10,079)	(12,599)	(15,118)
Pert	High Selic	(533,671)	(35,991)	(44,989)	(53,986)
Payable related to concession	High IGP-M	(507,560)	(23,145)	(28,931)	(34,717)
Payable related to concession	High IPCA	(47,394)	(1,867)	(2,334)	(2,801)
.		(11,335,278)	(712,389)	(890,485)	(1,068,580)
(a) Risk assessment still requires ruling by the Granting Authority.

In addition to the sensitivity analysis required by CVM Resolution No. 475/2008, the Company evaluates its financial instruments considering the possible effects on profit and loss and equity of the risks evaluated by Company management on the reporting date for the financial instruments, as recommended by IFRS 7 - Financial Instruments. Based on the equity position and the notional value of the financial instruments held as of December 31, 2017, it is estimated that these effects will approximate the amounts stated in the above table in the column for the forecast probable scenario, since the assumptions used by the Company are similar to those previously described. 

36.2.4     Electricity shortage risk

Approximately 64% of installed capacity in the country currently comes from hydroelectric generation, as informed by the Generation Information Bank of ANEEL, which makes Brazil and the geographic region in which we operate subject to hydrological conditions that are unpredictable, due to non-cyclical deviations of mean precipitation. Unsatisfactory hydrological conditions may cause, among other things, the implementation of comprehensive programs of electricity savings, such as rationalization or even a mandatory reduction of consumption, which is the case of rationing.

From 2014, the reservoirs of the Southeast/Midwest, North and Northeast regions have been subject to adverse climate situations, leading agencies responsible for this industry to adopt water resources optimization measures to guarantee full compliance with load.

The economic crisis that the country is going through has had a significant impact on the consumption of electricity, practically stagnating its growth in the last 4 years, being decisive to avoid a greater difficulty in the full service of the market.

Regarding short-term risk, the Electric Power Industry Monitoring Committee - CMSE has been reporting a balance between energy supply and demand, and indices have been kept within safety margins. The same position is adopted by ONS regarding the risk of deficit in the medium term, as stated in the 2018-2022 Energy Operation Plan.

Although dam storage levels are not ideal, from the standpoint of regulatory agencies, when combined with other variables they are sufficient to keep the risk of deficit within the safety margin established by the National Energy Policy Council - CNPE (maximum risk of 5%) in all subsystems.

36.2.5     Risk of GSF impacts

The Energy Reallocation Mechanism (MRE) is a system of redistribution of electric power generated, characteristic of the Brazilian electric sector, which has its existence by the understanding, at the time, of the need for a centralized operation associated with a centrally calculated optimum price known as PLD. Since generators have no control over their production, each plant receives a certain amount of virtual energy which can be compromised through contracts. This value, which enables the registration of bilateral contracts, is known as Physical Guarantee - GF and is also calculated centrally. Unlike PLD, which is calculated on a weekly basis, GF, as required by Law, is recalculated every five years, with a limit of increase or decrease, restricted to 5% by revision or 10% in the concession period.

The contracts need to be backed. This is done, especially, through the allocation of power generated received from the MRE or purchase. The GSF is the ratio of the entire hydroelectric generation of the MRE participants to the GF sum of all the MRE plants. Basically, the GSF is used to calculate how much each plant will receive from generation to back up its GF. Thus, knowing the GSF of a given month the company will be able to know if it will need to back up its contracts through purchases. 

Whenever GF multiplied by GF is less than the sum of contracts, the company will need to buy the difference in the spot market. However, whenever GSF multiplied by GF is greater than the total contracts, the company will receive the difference to the PLD.

The low inflows recorded since 2014 as well as problems with delays in the expansion of the transmission system have resulted in low GSF values, resulting in heavy losses for the companies holding MRE participating hydroelectric projects.

For plants with contracts in the Free Contracting Environment - ACL, the main way to manage the low GSF risk is not to compromise the entire GF with contracts, approach currently adopted by Copel.

For the contracts in the ACR, Law 13,203/2015, allowed the generators to contract insurance of the load, by means of payment of a risk premium. Copel adopted this approach to protect contracts related to energy produced by Mauá, Foz do Areia, Santa Clara, Fundão, Baixo Iguaçu and Cavernoso II Thermoelectric Plants.

For the distribution segment, the effects of the GSF are perceived in the costs of the contracts for availability, as well as in the costs associated with quota of Itaipu, of Angra and the plants whose concessions were renewed in accordance with Law 12,783/2013. This is a financial risk, however, since it guarantees the neutrality of energy purchase expenses through a tariff transfer.

36.2.6     Risk of non-renewal of concessions - generation and transmission

Currently, the extension of generation, transmission and distribution concessions covered by Articles 17, 19 and 22 of Law No. 9,074/1995 is governed by Law 12,783/2013. However, extension is permitted after express acceptance of conditions of that Law, such as: (i) distribution and transmission revenue determined according to criteria established by ANEEL; (ii) submission to service quality standards defined by ANEEL; (iii) change from price remuneration to tariff calculated by ANEEL for each plant; and (iv) allocation of plant energy and capacity physical guarantee shares to concessionaires and permission holders of distribution public utilities.

Concessions of hydroelectric power generation, electric power transmission and distribution may be extended at the discretion of the Concession Grantor, one single time, for a period of up to 30 years. However, for concessions of thermoelectric power generation, extension period is limited to 20 years. Decree 9,187 of November 1, 2017 regulates the extension of the thermoelectric power generation concessions set forth in Law 12,783.

Current regulation also defines that the concessionaire should request extension of concession of up to 60 months before the final contract date or after granting of concessions to hydroelectric power generation and electric power transmission and distribution plants, and of up to 24 months for thermoelectric plants.

It was also defined that, if the concessionaire opts to extend its concession, the Concession Grantor may advance effects of extension by up to 60 months counted as of contract or grant date, and may also define initial tariff or revenue.

On March 24, 2017 Copel GeT filed with ANEEL its intention to extend the granting of the Figueira Hydroelectric Plant generation concession, emphasizing, however, that it will sign the necessary contracts and / or amendments only after knowing and accepting the contractual terms and the rules that will govern any process related to the extension of the grant. For the other plants of Copel GeT with concessions ending within a term of ten years, the deadlines for the Company to inform about the extension or not of the generation concessions are shown below:

Plant	Deadline for manifestation
HPP Gov. Bento Munhoz da Rocha Neto (Foz do Areia)	09.17.2018
HPP Apucaraninha	10.12.2020
HPP Chaminé	08.16.2021
HPP Guaricana	08.16.2021

These five plants represent a Physical Guarantee of an average 620.69 MW.

The Company will make analyses in the future to decide on whether or not concessions should be extended in view of conditions imposed by the Concession Grantor, aiming at preserving its profitability levels.

In case extension is not brought forward, the Concession Grantor will open a tender bid process for concessions of the auction or competition type, for up to 30 years, considering, for tender bid judgment, the lowest tariff value and the highest offer to pay grant bonus.

Copel GeT does not have any transmission concession ending in the next ten years.

36.2.7     Risk of non-renewal of concessions - distribution of electricity

On December 9, 2015, pursuant to the term of Concession Agreement Amendment No. 46/1999 of Copel DIS, concession was extended, provided that quality and efficiency parameters for provision of distribution services are met, measured by indicators that consider duration and frequency of service interruptions (DECi and FECi) and efficiency in the Company’s economic and financial management.

The fifth amendment to the concession agreement imposes indexes of economic and financial efficiency and quality. Failure to comply with the indexes for two consecutive years or any limits at the end of the first five years will result in the termination of the concession (clause 18, sub clause 1), observing the agreement terms, specifically the right to full defense and reconsideration. Non-compliance with the global electricity supply quality indicators (DEC and FEC) for two consecutive years or three times in five years, depending on ANEEL’s regulation, may limit the payment of dividends or interest on capital (clause 2, sub clause 8), while the breach of the economic and financial sustainability indicators may require a capital contribution from the controlling shareholders (clause 13, sub clause 4). From the sixth year following the signing of the agreement, the breach of quality criteria for three consecutive years or of economic and financial management criteria for two consecutive years will result in the opening of an expiration process (clause 12, sub clause 14), causing the end of the concession.

The following table sets out the targets set for Copel DIS in the first five years of the renewal:

		Quality (Limit Established) (a)		Quality (Performed)
Year	Economic and Financial Management	DECi (b)	FECi (b)	DECi (c)	FECi (c)
2016		13.61	9.24	10.80	7.14
2017	EBITDA ≥ 0	12.54	8.74	10.41	6.79
2018	EBITDA (-) QRR ≥ 0 (d)	11.23	8.24	-	-
2019	{Net Debt / [EBITDA (-) QRR]} ≤ 1 / (0.8 * SELIC) (d) (e)	10.12	7.74	-	-
2020	{Net Debt / [EBITDA (-) QRR]} ≤ 1 / (1.11 * SELIC) (d) (e)	9.83	7.24	-	-
(a) According to Aneel’s Technical Note No. 0335/2015.
(b) DECi - Equivalent Time of Interruption Caused by Internal Source per Consumer Unit; and FECi - Equivalent Frequency of Interruption Caused by Internal Source per Consumer Unit.
(c) The DECi and FECi indicators are calculated by ANEEL and the performed data were not officially released for the year 2017
(d) QRR: Regulatory Reintegration Quota or Regulatory Depreciation Expense. This is the value defined in the most recent Periodical Tariff Review (RTP), plus the General Market Price Index (IGP-M) between the month preceding the RTP and the month preceding the twelve-month period of the economic and financial sustainability measurement.
(e) Selic: limited to 12.87% p.y.

36.2.8     Risk of non-extension of the gas distribution concession

As presented in Note 2.1.1, the expiration date of the gas distribution concession of the subsidiary Compagás is under discussion with the concession grantor.  

In the event of non-extension of the concession, Compagás will be entitled to compensation for investments made in the last 10 years prior to the end of the concession at their depreciated replacement value, according to the contractual clause.

36.2.9     Risk of overcontracting and undercontracting of electricity

In the current regulatory model, the agreement for purchase of electric power by distributors is regulated by Law No. 10,484/2014 and Decree No. 5,163/2004, which determine that distributors must purchase the volume required to serve 100% of their market through auctions on the Regulated Contacting Environment - ACR.

The contracting of the total output available in the market is verified by observing the period comprising the calendar year, and the difference between the costs remunerated by the tariff and those actually incurred on the power purchase are fully passed on to captive consumers as long as the Distributor presents a contracting level between 100% and 105% of its market. However, if distributors determine contracting levels lower or higher than the regulatory limits, there is the assurance of neutrality if it is identified that such violation derives from extraordinary and unforeseen events that are not manageable by the buyer.

In the last years, the distribution segment has been exposed to a general overcontracting scenario, as most companies determined contracting levels higher than 105%. Considering that several factors that have contributed to this situation are extraordinary and unavoidable by the distributors, such as the involuntary allocation of physical guarantee quotas and the broad migration of consumers to the free market, the ANEEL and the MME implemented a series of measures aiming at the migration of overcontracting. Between the years 2015 and 2016, we highlight:

• Normative Resolution No. 700/2016, which regulated the recognition of involuntary overcontracting arising from the reallocation of assured power quota of plants renewed pursuant Law 12,783/2013;

• Normative Resolutions No. 693/2015 and 727/2016, which regulated the New Energy and Decrease Clearing Facility (“Mecanismo de Compensação de Sobras e Déficits - MCSD-EN”), for the contracts arising from new generation projects, which enabled the reallocation of energy between distributors and generators; and

• Normative Resolution No. 711/2016, which established criteria and conditions for bilateral agreements between distributors and generators, under the temporary, total or partial reduction in the contracted power, permanent reduction, however partial, and also the contractual restriction.

In 2017, there were changes in the regulation for sale of electric energy, established by Decree 5,163/2014. On August 22, 2017, Decree 9,143/2017 was published, which, among other measures, changes Decree 5,163/2014, recognizing: i) the involuntary contractual exposures arising from the migration of special consumers to the free market, provided that the evaluation of the maximum effort by distributors is considered by ANEEL; and ii) the contractual right to the reduction of existing power auctions, by the amounts related to the migration of special consumers to the free market. Eligible contracts are those arising from power auctions held after June 2016, pursuant to Normative Resolution No. 726/2016.

On November 30, 2017, ANEEL initiated Public Hearing 70/2017, aiming at obtaining support for the regulation of mechanism for sale of contractual surplus, by free market distributors, pursuant to Law 13,360/2016, specifically to free consumers, sellers, generators and self-producers. The discussions will continue in 2018, but there is already an expectation that the mechanism can be used as an important tool for managing contracting by distributors.

Copel DIS underwent an overcontracting scenario in 2017, which required mitigation measures. All tools available were used to manage the contracting, seeking to meet the requirement to put forth its maximum effort to adjust its contracting level to regulatory limits. In this context, the distributor:

a) returned fully, in monthly MCSD, the amounts of energy not contracted by potential free consumers and distributors;

b) established agreements with generators for contract reduction, entering into bilateral agreements in accordance with Normative Resolution No. 711/2016;

c) reported its surpluses, in Free Changes and New Energy MCSD, related to exceeding amounts of energy of physical guarantee quotas and not contracted by special consumers. There were three New Energy MCSD processes during 2017, where the participation of Copel DIS in these mechanisms was essential to mitigate part of the energy overcontracted during the period.

In accordance with current market data, Copel DIS projected to end 2017 with a contracting level of 105.8%. Nevertheless, if the involuntary overcontracting is not recognized, Copel DIS should receive a bonus arising from the sale of the amount that exceeds the regulatory limit higher than 105% of PLD, whose amounts, mainly in the second half of 2017, exceeded their average purchase price.

36.2.10  Gas shortage risk

This risk involves potential periods of shortage of natural gas supply to meet the Company’s gas distribution and thermal generation business requirements.

Long periods of gas shortage could result in losses due to lower revenues by subsidiaries Compagas and UEG Araucária.

The natural gas supply contract between Brazil and Bolivia is effective for twenty years, ending in 2019. In the event of non-renewal of this contract, currently centralized at Petrobras, the direct consumers or state distributors shall negotiate directly with Transportadora Brasileira Gasoduto Bolívia-Brasil (TBG).

On the other hand, the volume of natural gas produced in the pre-salt has increased. The Brazilian’s current net output is 67 million m³/day and with growing trend.

In addition to the gas from Bolivia and from the pre-salt, there is the alternative of importing the Liquified Natural Gas (LNG). Currently Petrobras has tree regasification stations with total capacity of 41 million m³/day.

There are still projects of new regasification stations in all Brazilian regions, and the stations located in the South have capacity to meet the consumption of this region of the country.

In the international market, the natural gas price has remained stable, indicating a balance between supply and demand.

In this scenario, the natural gas shortage risk can be considered low.

36.3    Capital management

The Company seeks to maintain a strong capital base to maintain the trust of investors, creditors and market and ensure the future development of the business. Management also strives to maintain a balance between the highest possible returns with more adequate levels of loans and the advantages and the assurance afforded by a healthy capital position. Thus, it maximizes the return for all interested parties in its operations, optimizing the balance of debts and equity.

For this, we have the example of utilization of third-party capital in the Company's activities and, at the same time, search for the extension of the debt profile and improvement of the Net Working Capital - CCL, in the operation carried out recently, described in Note 41.2.

The Company monitors capital by using an index represented by adjusted consolidated net debt divided by adjusted consolidated EBITDA (Earnings before interest, taxes, depreciation and amortization), for the last twelve months. Corporate goal established in strategic planning provides for maintenance of index below 3.5 while any expectation of failing to meet this target will prompt Management to take steps to correct its course by the end of each reporting period.

As of December 31, 2017, the index performed is shown below: 

	12.31.2017	12.31.2016 Restated	12.31.2015 Restated
Loans and financing	3,759,505	4,046,293	4,077,060
Debentures	6,070,978	4,790,809	3,683,928
Ordinary financing of taxes with the federal tax authorities	-	-	193,739
Endorsement and securities	-	1,373,064	1,282,290
(-) Cash and cash equivalents	(1,040,075)	(982,073)	(1,480,727)
(-) Bonds and securities (current)	(1,341)	(136,649)	(294,514)
Collaterals and escrow accounts	-	-	2,000
(-) Bonds and securities - held for sale and held for trading (noncurrent)	(112,604)	(188,461)	(43,138)
(-) Collaterals and escrow accounts STN	(75,665)	(73,074)	(86,137)
Adjusted net debt	8,600,798	8,829,909	7,334,501
Net income	1,118,255	874,472	1,161,565
Equity in earnings of investees	(101,739)	-	(87,590)
Deferred IRPJ and CSLL	(105,257)	(69,632)	(165,794)
Provision for IRPJ and CSLL	379,943	589,322	698,023
Financial expenses (income), net	748,440	594,656	427,702
Depreciation and amortization	731,599	708,296	676,472
Adjusted ebitda	2,771,241	2,697,114	2,710,378
Adjusted net debt / Adjusted ebitda	3.10	3.27	2.71

36.3.1     The equity indebtedness is shown below:

Indebtedness	12.31.2017	12.31.2016 Restated	01.01.2016 Restated
Loans and financing	3,759,505	4,046,293	4,077,060
Debentures	6,070,978	4,790,809	3,683,928
(-) Cash and cash equivalents	1,040,075	982,073	1,480,727
(-) Bonds and securities (current)	1,341	136,649	294,514
Net debt	8,789,067	7,718,380	5,985,747
Equity	15,510,503	14,978,142	14,480,492
Equity indebtedness	0.57	0.52	0.41

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37. Related Party Transactions

12 Months Ended

Dec. 31, 2017

Related party transactions [abstract]

Related Party Transactions

	Assets		Liabilities		Revenue			Cost / Expense
Related parties / Nature of operation	12.31.2017	12.31.2016	12.31.2017	12.31.2016	12.31.2017	12.31.2016	12.31.2015	12.31.2017	12.31.2016	12.31.2015
Controlling shareholder
State of Paraná - dividends payable	-	-	85,710	83,786	-	-	-	-	-	-
CRC Transfer (Note 8)	1,516,362	1,522,735	-	-	90,712	188,918	217,722	-	-	-
"Luz Fraterna" Program (a)	168,405	167,674	-	-	-	-	-	-	-	-
2014 World Cup construction work (Note 15.1.2)	14,266	14,266	-	-	-	-	-	-	-	-
Morar Bem Paraná Program (Note 15.1.3)	261	24,985	-	-	1,165	5,502	19,482	-	-	-
Remuneration and employ social security charges assigned (b)	56	302	-	-	-	-	-	-	-	-
Telecommunication services (c)	28,750	48,794	-	-	40,396	29,763	29,456	-	-	-
Sistema Meteorológico do Paraná - Simepar (d)	-	-	-	164	-	-	-	(1,752)	(1,799)	-
.
Entities with significant influence
BNDES and BNDESPAR - dividends payable (e)	-	-	59,366	57,218	-	-	-	-	-	-
Financing (Note 23)	-	-	1,576,660	1,692,775	-	-	-	(140,537)	(149,794)	(120,982)
Debentures - Compagás (Note 24)	-	-	42,675	61,786	-	-	-	(5,242)	(2,883)	(3,347)
Debentures - wind farms (f)	-	-	281,448	295,188	-	-	-	(30,540)	(14,415)	-
State of Paraná investee
Sanepar (c) (g)	24	32	-	-	3,699	3,319	2,886	(1,783)	(1,455)	(1,409)
Dividends	12,095	16,817	-	-	-	-		-	-	-
Joint ventures
Voltalia São Miguel do Gostoso - mutual (Note 15.2)	38,169	28,968	-	-	3,513	3,509	3,260	-	-	-
Dividends	1,032	1,032	-	-	-	-	-	-	-	-
Costa Oeste Transmissora de Energia (h) (i) (j) (n)	206	72	59	73	1,034	848	726	(2,136)	(3,072)	(3,815)
Marumbi Transmissora de Energia  (h) (j) (n)	500	285	37	55	3,690	4,085	1,264	(756)	(900)	(346)
					-			-
Caiuá Transmissora de Energia  (h) (i) (j)	320	308	271	356	3,792	2,066	914	(13,700)	(15,595)	(14,481)
Dividends	1,991	1,991	-	-	-	-	-	-	-	-
Integração Maranhense Transmissora (h) (j)	-	-	43	76	-	-	-	(1,468)	(1,910)	(1,878)
Dividends	4,012	4,012	-	-	-	-	-	-	-	-
Matrinchã Transmissora de Energia (h) (j)	-	-	220	326	-	-	-	(6,636)	(4,043)	(444)
Dividends	36,840	23,213	-	-	-	-	-	-	-	-
Transmissora Sul Brasileira (h) (j)	-	-	72	149	-	-	-	(2,590)	(3,593)	(2,952)
Guaraciaba Transmissora de Energia (h) (j)	-	-	74	173	-	-	-	(3,202)	(966)
Dividends	11,541	5,512	-	-	-	-	-	-	-	-
Paranaíba Transmissora de Energia (j)	-	-	159	-	-	-	-	(3,642)	(283)	-
Dividends	7,093	3,051	-	-	-	-	-	-	-	-
Cantareira Transmissora de Energia  - dividends	2,146	1,224	-	-	-	-	-	-	-	-
Mata de Santa Genebra Transmissão - dividends	3,264	-	-	-	-	-	-	-	-	-
Associates
Dona Francisca Energética S.A. (k)	-	-	1,436	1,436	-	-	-	(17,031)	(16,949)	(30,556)
.
Foz do Chopim Energética Ltda. (c) (h)	163	161	-	-	2,063	2,178	1,913	-	-	-
Sercomtel S.A. Telecomunicações (c) (l)	3,778	3,430	-	-	8,153	8,210	5,788	(4)	(6)	(6)
.
Key management staff
Fees and social security charges (Note 33.2)	-	-	-	-	-	-	-	(28,876)	(26,021)	(23,839)
Pension and healthcare plans (Note 25)	-	-	-	-	-	-	-	(1,690)	(1,403)	(2,380)
Other related parties
Fundação Copel  (c)	38	52	-	-	316	305	292	-	-	-
Administrative property rental	-	-	349	340	-	-	-	(16,347)	(13,519)	(15,390)
Pension and healthcare plans (Note 25)	-	-	866,103	769,865	-	-	-	-	-	-
.
Lactec (m)	-	-	1,762	1,743	-	-	-	(15,912)	(12,911)	(14,752)

a)     The Luz Fraterna Program, created under Law No. 491/2013 and No. 17,639/2013, allows the State Government to pay for the electricity bills of low income families in Paraná - which have duly applied for the program - provided their consumption does not exceed 120 kWh a month. This benefit is available to residential customers with single-phase connections, rural customers with single-phase connections or two-phase connections with circuit breakers of up to 50 amperes. Applicants must not have more than one electricity bill under their names and must not have any pending debts to the Company.

In the balance at December 31, 2017, the amount of R$115,890, recognized in the Parent Company, was settled, as described in Note 15.1.1. Of the remaining balance, recognized in Copel DIS, R$43,384 was settled on March 23, 2018.

b)     Reimbursement of wages and social charges for employees transferred to the Paraná State Government. The balances shown are net of allowance for loan losses in the amount of R$1,193 as of December 31, 2017 (R$1,749 as of December 31, 2016).

c)     Revenue of Copel TEL from telecommunications services and lease of equipment and infrastructure.

d)     The Meteorological System of Paraná - Simepar is a supplementary unit of the Independent Social Service Paraná Technology, linked to the State Department of Science, Technology and Higher Education. Simepar had contracts with Copel, effective until November 6, 2017, for services of weather forecast, meteorological reports, ampacity analysis, mapping and analyses of winds and atmospheric discharges.

e)     BNDES is the parent company of BNDES Participações S.A. - BNDESPAR, which has significant influence over Copel (Note 31.1).

f)      BNDES and BNDESPAR acquired all the debentures issued by the subsidiaries Nova Asa Branca I, Nova Asa Branca II, Nova Asa Branca III, Nova Eurus IV and Ventos de Santo Uriel (Note 24).

g)     Basic sanitation provided by Sanepar.

h)     Charges for the use of the Transmission System and revenue from operating and maintenance contracts and rendering of engineering services with Copel GeT.

i)      Copel DIS has transmission system connection contracts (CCT) with two companies - Costa Oeste Transmissora de Energia and Caiuá Transmissora de Energia - expiring upon the termination of the distribution or transmission concession, whichever occurs first.

j)      Copel DIS maintains a Contract for the Use of Transmission System (Cust) with ONS and power transmission concessionaires whose object is the contracting of Transmission System Use Amount (Must). Contracting is permanent and is regulated by ANEEL Normative Resolution No. 666/2015. Amounts are defined for four subsequent years, with annual reviews.

k)     Power purchase and sale agreement signed by Dona Francisca Energética and Copel GeT, expiring on March 31, 2025.

l)      Light pole sharing agreement, signed between Sercomtel S.A. Telecomunicações and Copel DIS, expiring on December 28, 2018.

m)    The Institute of Technology for Development (Lactec) is a Public Interest Civil Society Organization (OSCIP), in which Copel is an associated. Lactec has service and R&D contracts with Copel GeT and Copel DIS, which are subject to prior or later control and approval by ANEEL. The asset balances refer to Energy Efficiency and R&D programs, recorded under current assets, in service in progress, until the respective projects are concluded, pursuant to ANEEL.

n)     Personnel cost-sharing agreement entered into with Copel and its subsidiaries.

The values resulting from operating activities of Copel DIS with related parties are billed at the rates approved by ANEEL.

37.1    Guarantees and endorsements awarded to related parties

Sureties and guarantees granted by Copel to its subsidiaries for financing and debentures are informed in Notes 23 and 24.

Copel provided financial guarantees, in the form of corporate bond, for power purchase agreements made by Copel GeT, in the total amount of R$3,645 and made by Copel Energia, in the amount of R$49,584.

Sureties and guarantees granted by Copel and Copel GeT for financing, debentures and insurance contracts of joint ventures are shown below:

								Amount
			Date	Final	Amount	Balance	Interest	endorsement/
	Company	Operation	issued	maturity	approved	12.31.2017	%	security
(1)	Caiuá Transmissora	Financing	12.23.2013	02.15.2029	84,600	71,508	49.0	35,039
(2)	Guaraciaba Transmissora	Financing	09.28.2016	01.15.2031	440,000	421,433	49.0	206,502
(3)	Integração Maranhense	Financing	12.30.2013	02.15.2029	142,150	116,995	49.0	57,328
(4)	Mata de Santa Genebra	Financing	11.30.2017	07.15.2033	1,018,500	703,897	50.1	352,652
(5)	Matrinchã Transmissora	Financing	12.27.2013	05.15.2029	691,440	567,796	49.0	278,220
(6)	Matrinchã Transmissora	Debentures	05.15.2016	06.15.2029	180,000	193,088	49.0	94,613
(7)	Paranaíba Transmissora	Financing	10.21.2015	10.15.2030	606,241	582,452	24.5	142,701
(8)	Paranaíba Transmissora	Debentures	01.15.2017	03.15.2028	120,000	109,644	24.5	26,863
(9)	Voltalia São Miguel do Gostoso Part. S.A. (a)	Debentures	01.15.2016	12.15.2028	57,000	53,328	49.0	26,131
(10)	Usina de Energia Eólica Carnaúba S.A. (a)	Financing	08.24.2015	11.15.2031	74,000	53,975	49.0	26,448
(11)	Usina de Energia Eólica Reduto S.A. (a)	Financing	08.24.2015	11.15.2031	70,000	53,969	49.0	26,445
(12)	Usina de Energia Eólica Santo Cristo S.A. (a)	Financing	08.24.2015	11.15.2031	74,000	50,605	49.0	24,796
(13)	Usina de Energia Eólica São João S.A. (a)	Financing	08.24.2015	11.15.2031	68,000	51,425	49.0	25,198
(14)	Cantareira Transmissora de Energia	Financing	12.28.2016	09.15.2032	426,834	439,192	49.0	215,204
								1,538,140
(a) Subsidiaries of Voltália São Miguel do Gostoso I Participações S.A.
Financial institution (fund provider):
BNDES: (1) (2) (3) (4) (5) (7) (10) (11) (12) (13) (14)
Allocation:
Investment Program and/or Working capital.
Endorsement/Security:
Provided by Copel Geração e Transmissão: (1) (3);
Provided by Copel: (2) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14)
Securities offered for the transaction:
Pledge of shares of Copel Geração e Transmissão proportional to the interest in projects.

Performance bond	Final	Amount	% endorsement	Amount
Company	maturity	Insured	Copel GeT	endorsement
Matrinchã Transmissora	03.31.2019	90,000	49.0	44,100
Guaraciaba Transmissora	04.30.2019	47,000	49.0	23,030
Paranaíba Transmissora	07.26.2018	48,000	24.5	11,760
Mata de Santa Genebra	05.26.2018	78,300	50.1	39,228
Cantareira Transmissora	11.30.2018	31,200	49.0	15,288
				133,406

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38. Commitments

12 Months Ended

Dec. 31, 2017

Commitments

Commitments

Commitments related to long-term contracts not yet incurred, and therefore not recognized in the financial statements, are as follows:

	12.31.2017
Energy purchase and transportation contracts	118,588,046
Additions to property, plant and equipment
Construction of transmission lines and substations	292,601
Construction of HPP Colíder power plant	42,653
Construction of HPP Baixo Iguaçu	193,156
Construction of Cutia wind farm	701,191
Telecommunications works	131,557
Additions to intangible assets	161,337
Gas purchase contracts	54,670

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39. Insurance

12 Months Ended

Dec. 31, 2017

Insurance

Insurance

Details by risk type and effectiveness date of the main policies can be seen below.

	End	Insured
Policy	of term	amount
Nominated Risks	08.24.2018	2,172,442
Operational risks - HPP Governador Jayme Canet Junior	11.23.2018	799,290
Operational risks - UEG Araucária (a)	05.31.2018	725,286
Operational risks - Brisa Potiguar	06.27.2018	720,713
Fire - Company - owned and rented facilities	08.24.2018	597,716
Operational risks - São Bento	06.27.2018	449,928
Legal guarantee - Office of the General Counsel to the National Treasury	05.11.2018	291,396
Multi-risk - Elejor	03.11.2019	197,800
D&O Insurance (a)	03.28.2019	82,700
Aviation insurance (hull and civil liability) (a)	01.30.2019	80,197
(a)  The values of the insured of operating risks - UEG Araucária and Seguro Aeronáutico have been translated from USD into BRL,
with the current rate R$3.3080, as of 12.31.2017.

In addition to the related insurance, the Company contract other insurance policies with lower values, such as: general civil liability, payment guarantee, several risks, national and international transportation and life insurance.

The guarantee insurance contracted by the subsidiaries, joint ventures and associates have Copel and/or Copel GeT as guarantor, within the limits of their participation in each project.

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40. Additional Information to the Statement of Cash Flows

12 Months Ended

Dec. 31, 2017

Additional Information To Statement Of Cash Flows

Additional Information to the Statement of Cash Flows

40.1    Non-cash transactions

The balance of other temporary investments increased significantly in its movement due to the transfer from investments - jointly-controlled enterprises. Such increase arose from the accounting reclassification of Sanepar’s common shares, owned by Copel Energia, assessed at R$73,361, in accordance with NE 18.4.

As presented in Note 19.2, the additions to property, plant and equipment reached R$1,318,336. Of this amount, R$123,268 (R$35,474 in 2016 and R$19,961 in 2015), represent the portion of installment purchases not settled through the end of the year. Such amount also comprises R$14,122 related to capital increases paid up through projects, in special purpose entities controlled by Cutia Empreendimentos Eólicos S.A.

 In turn, as mentioned in Notes 20.1, 20.3 and 20.4, the additions to intangible assets totaled R$778,386. Of this amount, R$30,312 (R$58,165 in 2016 and R$48,611 in 2015), is equivalent to the installment of term purchases and has not yet been paid until the end of the year.

The mentioned transactions did not involve cash and, for this reason, are not being presented in the statement of cash flows.

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41. Subsequent Events

12 Months Ended

Dec. 31, 2017

Subsequent Events

Subsequent Events

41.1    Cantareira Transmissora de Energia S.A.

On February 3, 2018 transmission line Estreito - Fernão Dias (500 kV) became operational one month in advance of the expected go-live. This project is owned by SPE Cantareira (49% Copel GeT).

The line, initially expected to become operational in March 2018, is 342 kilometers long and runs through the states of São Paulo and Minas Gerais, and more than 29 cities. The project will allow a further exchange of power, contributing to the operating security and reliability of the national electric system. 

41.2    Debentures

On January 19, 2018 Copel completed the 7^th issue of simple non-convertible unsecured debentures in a single series, for public distribution, pursuant to CVM Ruling 476/2009, in the total amount of R$600,000. The Company issued 600,000 debentures, with a par value of R$1 each, maturing within three years from the date of issue and amortization, in two annual installments - on January 15, 2020 and on January 15, 2021. The debentures will earn interest of accumulated variation of 119.0%, of daily average rates of Interbank Deposits - DI. Funds raised will be used to strengthen the issuer’s capital structure.

41.3    Surety provided to related parties

Copel provided surety for issue of debentures of jointly-controlled project Cantareira Transmissora de Energia on January 9, 2018. The Company issued 100,000 non-convertible debentures at a par value of R$1, in the total amount of R$100,000, with final maturity on August 15, 2032, amortization and interest in 28 bi-annual installments beginning February 15, 2019. Debentures will earn bi-annual interest corresponding to the change in IPCA, plus surtax of 6.9094% p.a. Funds raised will be used to implement the project.

41.4    UEG Araucária - Execution of gas agreement

On January 31, 2018 a fuel supply agreement was entered into by and between Petróleo Brasileiro S.A. - Petrobras and UEG Araucária Ltda. The agreement will be effective until December 31, 2018 and provides for supply of up to 2,190,000 cubic meters of natural gas a day, with no take-or-pay requirement. Therefore, UTE Araucária is again available to the National Interlinked System - SIN and can be delivered at ONS discretion. Gas will be distributed by Compagás.

41.5    Revision of physical guarantee

The Concession Grantor revised the Physical Guarantee of the following power plants through MME Ordinance 178 of May 3, 2017 with effects from January 1, 2018:

				Installed	Physical guarantee	Physical guarantee
	Installed	Physical		power	(proportional	(proportional
	power	guarantee		(proportional	average MW)	average MW)
Projects	(MW)	(average MW)	Ownership	average MW)	up to 12.31.2017	as from 2018
HPP Gov. José Richa (Salto Caxias)	1240.0	605.6	100%	1240.0	605.0	605.6
HPP Gov. Ney Aminthas de Barros Braga (Segredo)	1260.0	578.5	100%	1260.0	603.0	578.5
HPP Gov. Bento Munhoz da Rocha Netto (Foz do Areia)	1676.0	603.0	100%	1676.0	576.0	603.3
HPP Dona Francisca	125.0	76.0	23%	28.8	18.0	17.5
HPP Santa Clara e HPP Fundão	240.3	133.0	70%	168.2	94.8	93.1
					Net efect	1.2

41.6    Recognition of tax credit

On February 14, 2018 the Brazilian Federal Revenue Office recognized tax credit for the restated amount of R$80,226 in favor of the Company regarding the discussion of tax levy on Pasep from July 1988 to July 1995, in connection with the effects of Federal Senate Resolution 49, of October 9, 1995, which suspended the effects of Decree-Laws 2,445/1988 and 2,449/1988, deemed to be unconstitutional by the Federal Supreme Court. 

41.7      Promissory Notes

On May 11, 2018, Copel GeT carried out the fourth issuance of Promissory Notes, for public distribution according to CVM Instruction No. 566/2015, Law No. 6,385/1976, CVM Instruction No. 476/2009 and other legal and regulatory applicable resolutions. Were issued 100 Promissory Notes, with par value of R$6,000, in the total amount of R$600,000. and maturity at 11.11.2018. The Promissory Notes will earn interest corresponding to the accumulated variation of 114.5% of the daily average rates of the Interbank Deposits - DI. A Copel corporate guarantee was provided for this transaction. The amounts raised will be used in refinancing the debts and reinforcement of working capital of Copel GeT.

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42. Condensed Unconsolidated Financial Information of Companhia Paranaense de Energia – Copel

12 Months Ended

Dec. 31, 2017

Condensed Unconsolidated Financial Information Of Companhia Paranaense De Energia Copel

Condensed Unconsolidated Financial Information of Companhia Paranaense de Energia – Copel

Since the condensed unconsolidated financial information required by Rule 12-04 of Regulation S-X is not required under IFRS issued by the International Accounting Standards Board - IASB, such information was not included in the original financial statements filed with the Brazilian Securities and Exchange Commissions – CVM in April 12, 2017. In order to attend the specific requirements of the Securities and Exchange Commission (the “SEC”), Management has incorporated the condensed unconsolidated information in these financial statements as part of the Form 20-F. The condensed unconsolidated financial information of Companhia Paranaense de Energia - Copel, as of December 31, 2017 and 2016 and for each of the two years in the period ending on December 31, 2017, presented herein were prepared considering the same accounting policies as described in Note 3 and 4 to Company’s consolidated financial statements.

(a) Condensed statements of financial position as of December 31, 2017 and 2016

ASSETS	12.31.2017	12.31.2016 Restated	12.31.2015 Restated
Current assets
Cash and cash equivalents	56,833	46,096	25,653
Bonds and securities	90	149	168
Collaterals and escrow accounts	129	128	132
Dividends receivables	459,464	485,263	488,187
CRC transferred to the State Government of Paraná	167,109	-	111,663
Other current receivables	8,287	8,736	13,018
Income tax and social contribution	14,055	41,899	154,077
Other current recoverable taxes	276	197	-
Related parties	292,051	116,020	447
	998,294	698,488	793,345
Noncurrent assets
Other temporary investments	18,727	408,297	-
CRC transferred to the State Government of Paraná	1,349,253	1,522,735	1,271,579
Judicial deposits	119,167	153,932	267,411
Income Tax and Social Contribution	158,808	153,216	79,144
Deferred income tax and social contribution	102,236	47,462	100,919
Other noncurrent recoverable taxes	15	15	15
Related parties	219,426	220,661	297,237
	1,967,632	2,506,318	2,016,305
Investments	14,987,607	13,965,892	14,057,384
Property, Plant and Equipment, net	830	630	455
Intangible Assets	1,603	3,168	3,046
	16,957,672	16,476,008	16,077,190
TOTAL ASSETS	17,955,966	17,174,496	16,870,535
LIABILITIES	12.31.2017	12.31.2016 Restated	12.31.2015 Restated
Current liabilities
Payroll, social charges and accruals	6,977	5,573	15,436
Related parties	3,936	-	-
Suppliers	2,096	2,225	2,602
Income tax and social contribution payable	2,467	-	-
Other taxes due	476	412	32,617
Loans and financing	322,092	453,288	61,788
Debentures	339,341	351,148	19,497
Dividends payable	267,988	256,426	310,020
Post-employment benefits	57	188	21
Other accounts payable	249	579	232
Provisions for legal claims	112,000	-	-
	1,057,679	1,069,839	442,213
Noncurrent liabilities
Other taxes due	2,365	2,075	1,466
Loans and financing	664,020	562,072	969,412
Debentures	876,140	665,951	996,590
Post-employment benefits	3,995	3,517	7,795
Other accounts payable	830	-	-
Provisions for legal claims	143,095	152,944	290,520
	1,690,445	1,386,559	2,265,783
Equity
Attributable to controlling shareholder's
Share capital	7,910,000	7,910,000	6,910,000
Equity valuation adjustments	895,601	998,466	1,177,372
Legal reserves	844,398	792,716	744,784
Retained earnings	5,557,843	5,016,916	5,330,383
	15,207,842	14,718,098	14,162,539
Total liabilities and equity	17,955,966	17,174,496	16,870,535

(b) Condensed statements of operations for the years ended December 31, 2017, 2016 and 2015

	12.31.2017	12.31.2016	12.31.2015
		Restated	Restated
Other operating revenues (expenses)
General and administrative expenses	(59,601)	(107,761)	(123,717)
Other operating income	(68,788)	231,651	(3,586)
Equity in earnings of investees	1,291,434	839,853	1,302,435
	1,163,045	963,743	1,175,132
PROFIT BEFORE FINANCIAL RESULTS AND TAXES	1,163,045	963,743	1,175,132
Financial income (expenses)
Financial income	181,312	321,056	245,347
Financial expenses	(327,855)	(334,113)	(314,101)
	(146,543)	(13,057)	(68,754)
Operating profit	1,016,502	950,686	1,106,378
Income tax and social contribution
Income tax and social contribution	(36,803)	(4,882)	(217)
Deferred income tax and social contribution	53,927	(50,032)	3,388
	17,124	(54,914)	3,171
Net income for the period	1,033,626	895,772	1,109,549
Basic and diluted net earning per share attributed do parent company shareholders - in reais
Common shares	3.6075	3.1265	3.8726
Class A preferred shares	3.9683	3.4390	4.2599
Class B preferred shares	3.9683	3.4390	4.2597

(c) Condensed statement of comprehensive income for the years ended December 31, 2017, 2016 and 2015

	12.31.2017	12.31.2016 Restated	12.31.2015 Restated
NET INCOME	1,033,626	895,772	1,109,549
Other comprehensive income
Items that will never be reclassified to profit or loss
Gain (losses) on actuarial liabilities
Post-employment benefits	18	6,460	2,050
Post-employment benefits - equity	(29,567)	(63,913)	289,082
Taxes on other comprehensive income	(7)	(2,196)	(696)
Items that may be reclassified to profit or loss
Adjustments related to financial assets classified as available for sale	11,661	3,612	412
Adjustments related to financial assets classified as available for sale - equity	9,554	-	-
Taxes on other comprehensive income	(3,965)	(1,229)	1
Realization - gain on financial assets, net of taxes	(9,355)	-	-
Realization - gain on financial assets - equity	(9,554)	-	-
Total comprehensive income, net of taxes	(31,215)	(57,266)	290,849
TOTAL COMPREHENSIVE INCOME	1,002,411	838,506	1,400,398

(d) Condensed statements of cash flows for the years ended December 31, 2017, 2016 and 2015

	12.31.2017	12.31.2016	12.31.2015
Net cash generated from operating activities	440,406	1,905,189	1,455,819
Cash flow from investing activities
Financial investments	24	23	(148)
Loans and financing granted to related parties	(251,856)	(87,272)	(36,800)
Receipt of loans and financing granted to related parties	124,122	5,112	15,359
Disposal of investments	397,572	-	-
Additions in investments	(574,347)	(1,489,563)	(1,235,576)
Capital reduction of investees.	170,000	-	-
Additions to property, plant and equipment	(282)	(224)	(134)
Additions to intangible	(499)	(122)	(292)
Net cash generated from (used in) investing activities	(135,266)	(1,572,046)	(1,257,591)
Cash flow from financing activities
Loans and financing obtained from third parties	77,000	-	640,005
Issue of Debentures	520,000	-	-
Amortization of principal - loans and financing	(83,000)	(6,000)	(606,000)
Amortization of principal - debentures	(333,300)	-	-
Dividends and interest on capital paid	(475,103)	(306,700)	(241,442)
Net cash used in financing activities	(294,403)	(312,700)	(207,437)
Total effects on cash and cash equivalents	10,737	20,443	(9,209)
Cash and cash equivalents at the beginning of the period	46,096	25,653	34,862
Cash and cash equivalents at the end of the period	56,833	46,096	25,653
Change in cash and cash equivalents	10,737	20,443	(9,209)

(e) Restatement of comparative balances

The impact of the restatement described in note 4.1 above in the Holding’s condensed financial statements was the decrease in “Investments”, recognized in “Equity in Earnings of Investees”.

Based on the guidelines of IAS 8 - Accounting Policies, Changes in Accounting Estimates and Correction of Errors, the Statements of financial position, Statements of operations and of Comprehensive income are being restated for comparison purposes:

12.31.2016	As previously stated	Adjustments	Restated
STATEMENTS OF FINANCIAL POSITION
Assets	17,320,563	(146,067)	17,174,496
Noncurrent assets	16,622,075	(146,067)	16,476,008
Investments	14,111,959	(146,067)	13,965,892
Liabilities	17,320,563	(146,067)	17,174,496
Equity	14,864,165	(146,067)	14,718,098
Attributable to controlling shareholder's	14,864,165	(146,067)	14,718,098
Profit retention reserve	5,162,983	(146,067)	5,016,916
STATEMENTS OF INCOME
Operational expenses / income	1,026,621	(62,878)	963,743
Equity in earnings of investees	902,731	(62,878)	839,853
Profit before financial results and taxes	1,026,621	(62,878)	963,743
Financial results	(13,057)	-	(13,057)
Operating profit	1,013,564	(62,878)	950,686
Income tax and social contribution	(54,914)	-	(54,914)
Net income	958,650	(62,878)	895,772
STATEMENTS OF COMPREHENSIVE INCOME
Total comprehensive income, net of taxes	(57,266)	-	(57,266)
comprehensive income	901,384	(62,878)	838,506

12.31.2015	As previously stated	Adjustments	Restated
STATEMENTS OF FINANCIAL POSITION
Assets	16,953,724	(83,189)	16,870,535
Noncurrent assets	16,160,379	(83,189)	16,077,190
Investments	14,140,573	(83,189)	14,057,384
Liabilities	16,953,724	(83,189)	16,870,535
Equity	14,245,728	(83,189)	14,162,539
Attributable to controlling shareholder's	14,245,728	(83,189)	14,162,539
Profit retention reserve	5,413,572	(83,189)	5,330,383
STATEMENTS OF INCOME
Operational expenses / income	1,258,321	(83,189)	1,175,132
Equity in earnings of investees	1,385,624	(83,189)	1,302,435
Profit before financial results and taxes	1,258,321	(83,189)	1,175,132
Financial results	(68,754)	-	(68,754)
Operating profit	1,189,567	(83,189)	1,106,378
Net income	1,192,738	(83,189)	1,109,549
STATEMENTS OF COMPREHENSIVE INCOME
Total comprehensive income, net of taxes	290,849	-	290,849
comprehensive income	1,483,587	(83,189)	1,400,398

During the years ended December 31, 2017, 2016 and 2015, we received R$669,179, R$2,006,220 and R$1,738,989, respectively, from dividends and interest on own capital paid by our investees. Additional disclosures relating to Companhia Paranaense de Energia - Copel unconsolidated condensed financial information presented above are as follows:

• Related Parties: The Company has the following balances outstanding with related parties:

	12.31.2017	12.31.2016
Noncurrent assets
Estado do Paraná	130,156	130,156
Copel Distribuição	89,296	90,640
Copel Telecomunicações	5,189	85,421
Eólicas	221,327	-
Structure sharing	27,273	1,496
Voltalia	38,169	28,968
Structure sharing	67	-
Total	511,477	336,681

• Investments - As of December 31, 2017, 2016 and 2015, investments in subsidiaries are comprised as follows:

	12.31.2017	12.31.2016	01.01.2016
		Restated	Restated
Copel Geração e Transmissão	8,409,370	7,966,750	6,843,029
Copel Distribuição	5,452,703	4,805,981	5,603,673
Copel Telecomunicações	483,195	446,155	508,874
Copel Energia	133,511	269,870	252,074
Compagas	202,857	152,811	150,851
UEG Araucária	89,240	89,314	151,471
Other investments	85,549	99,084	84,959
	14,856,425	13,829,965	13,594,931

The information regarding joint ventures, associates and other investments are presented in note 18.1 – Changes in investments.

• Dividends receivable - The dividends receivable are comprised as follows:

	12.31.2017	12.31.2016
Investees and subsidiaries
Copel Geração e Transmissão	297,500	261,686
Copel Distribuição	98,967	149,500
Copel Telecomunicações	15,405	28,910
Copel Comercialização	3,717	6,763
Compagas	7,942	600
Elejor	16,838	8,596
UEG Araucária	6,143	6,143
Nova Asa Branca I	114	114
Nova Asa Branca II	157	157
Nova Asa Branca III	75	75
Nova Eurus IV	48	48
Santa Maria	186	186
Santa Helena	214	214
Ventos de Santo Uriel	235	235
Joint Ventures
Voltália	1,032	1,032
Other investments
Sanepar	10,087	20,275
Other investments	804	729
	459,464	485,263

• Reserve for risks - Companhia Paranaense de Energia - Copel recorded reserves for risks mainly related to Cofins and PIS/PASEP. The provisions for risks are shown below:

	12.31.2017	12.31.2016
Regulatory	15,042	15,121
Labor	518	18
Civil	135,422	20,578
Tax Claim	104,113	117,227
	255,095	152,944

• Restriction of transfer of funds from subsidiaries - The subsidiaries described below qualify as either concessionaires of public services or independent power producers. As such, any transfer of funds to the respective parent company, in the form of loans or advances, requires approval by Aneel. This regulatory restriction does not apply to cash dividends determined in accordance with the Brazilian Corporate Law.

In addition, Copel GeT has certain financing agreements with the Brazilian National Development Bank (“BNDES”) under which BNDES approval is required for Copel GeT to pay cash dividends exceeding 30% of its net profit. Since BNDES has always approved Copel GeT’s requests to pay cash dividends in excess of 30% of its net profit and this restriction has not affected Copel GeT’s ability to pay cash dividends or parent company’s ability to meet its cash obligations, management deemed it to be a perfunctory clause. 

As of December 31, 2017, total restricted subsidiaries net assets amount to R$14,370,004 composed as follows:

	12.31.2017	12.31.2016	01.01.2016
		Restated	Restated
Copel Geração e Transmissão S.A.	8,409,370	7,966,750	6,843,029
Copel Distribuição S.A.	5,452,703	4,805,981	5,603,673
UEG Araucária Ltda.	446,204	446,576	754,254
Centrais Elétricas Rio Jordão - Elejor	61,727	79,701	74,000
Total	14,370,004	13,299,008	13,274,956

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4. Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2017

Significant Accounting Policies Policies

Restatement of Comparative Balances

The Company’s management adjusted the consolidated financial statements at December 31, 2016 and December 31, 2015 as follows: 

4.1.1       Investments

During the preparation of our unaudited consolidated interim financial information as of September 30, 2017, the Company's Management identified an investment by its indirect subsidiary UEG Araucária Ltda. in a Multimarket Investment Fund, which held shares of other investment funds that in turn invested in a private company, whose main asset was a real estate development. As of September 30, 2017, such investment corresponded to R$157,079 and was recognized under “Bonds and Securities”, in current assets, because, according to information delivered by the management of UEG Araucária to the Company’s Management, that investment was made in a wholly-owned fund, whose benchmark was 103.5% of the CDI (Interbank Deposit Certificate) rate and that was composed of shares issued by other investment funds and government bonds, with immediate liquidity and that were available for sale. This investment amounted to R$165,749 as of December 31, 2016 and R$111,760 as of December 31, 2015, and was also recognized under “Bonds and Securities”.

In order to determine the value of such investment and its accounting classification, as well as the extent of any possible impact, the Company's Management used independent appraisers and legal advisers in accordance with best governance practices, including an internal investigation into the circumstances of the investment. The valuation has already been concluded and the investigations are in their final stage. These investigations found that the investment occurred strictly in the UEG Araucária and violated Copel’s investment policy, which authorizes investments in wholly-owned investment funds only to the extent such funds invest exclusively in bonds issued by the Brazilian federal government or by financial institutions controlled by the Brazilian federal government.

Based on the information available during the preparatioan of the consolidated financial statements for 2017, we concluded that it is necessary to recognize a provision for the impairment of the investment in light of its specific characteristics, including the status of its underlying real estate development and the outlook for its future cash flow generation. We also determined that this provision should have been recorded in prior years because the information known during the preparation of those consolidated financial statements was already available at that time and should have been considered in preparing the consolidated financial statements for 2016 and 2015.

In the course of preparing our consolidated financial statements, were analyzed all legal and corporate documents of the investment fund and it was concluded that from July 2015, UEG Araucária started to have significant influence in the private company, even though indirectly. Thus, from July 2015, the remaining balance of the investment, until then classified as a financial instrument measured by its fair value, became measured and disclosed as an associate, and the effects of the change in the asset classification were recorded in the company's profit or loss of that year. 

Supported by a report prepared in March 2018 by independent appraisers engaged by Copel, the Company's Management determined the fair value of the financial instrument as of July 2015, identifying the necessity to reduce the asset by R$99,031, with the corresponding increase in financial expenses. From then on, the remaining balance, became an investment in an associate, was decreased by an additional provision for devaluation of R$4,955, with the corresponding decrease in equity in earnings of investees in the consolidated financial statements for the fiscal year ended December 31, 2015. Accordingly, the total reduction on January 1, 2016 was R$103,986.

In the consolidated financial statements for the fiscal year ended December 31, 2016, additional provision for devaluation of R$52,201, of which R$55,284 was the result of equity in earnings of investees, R$4,300 as financial expense and R$7,383 as financial income.

Hence, the consolidated financial statements at December 31, 2016 and December 31, 2015, presented for comparative purposes, have been restated so that the remaining balances of these investment, in the amounts of R$9,562 at December 31, 2016 and R$7,774 at December 31, 2015 were also reclassified to non-current assets, as Investments. 

4.1.2       Provisions for legal claims - CVA tax regime

In 2017 Copel recognized prior period adjustments to the account of provisions related to tax litigation due to the taxation of the Sectorial financial assets and liabilities currently classified as Sectorial financial assets and liabilities. The impact of these adjustments represents at December 31, 2016 an increase by R$31,995 in Financial expenses versus Provision for legal claims, in noncurrent liabilities, and an increase by R$10,878 in Deferred income tax and social contribution in the income statement versus Deferred taxes, in noncurrent assets. The loss for the year incurred by Copel increased by R$21,117.

4.1.3       Effects of restatement of comparative balances

Based on the guidelines of IAS 8 - Accounting Policies, Changes in Accounting Estimates and Correction of Errors, the Statements of Financial Position and Statements of Income, of Comprehensive Income, of Changes in Equity and of Cash Flows are being restated for comparison purposes: 

12.31.2016	As previously stated	Adjustments	Restated
STATEMENTS OF FINANCIAL POSITION
Assets	30,434,209	(145,309)	30,288,900
Current assets	4,402,990	(165,749)	4,237,241
Bonds and securities	302,398	(165,749)	136,649
Noncurrent assets	26,031,219	20,440	26,051,659
Deferred income tax and social contribution	803,477	10,878	814,355
Investments	2,334,950	9,562	2,344,512
Liabilities	30,434,209	(145,309)	30,288,900
Noncurrent liabilities	9,622,727	31,995	9,654,722
Provisions for legal claims	1,241,343	31,995	1,273,338
Equity	15,155,446	(177,304)	14,978,142
Attributable to controlling shareholder's	14,864,165	(146,067)	14,718,098
Profit retention reserve	5,162,983	(146,067)	5,016,916
Attributable to non-controlling interest	291,281	(31,237)	260,044
STATEMENTS OF INCOME
Operational expenses / income	(823,536)	(55,284)	(878,820)
Equity in earnings of investees	221,695	(55,284)	166,411
Profit before financial results and taxes	2,044,102	(55,284)	1,988,818
Financial results	(565,744)	(28,912)	(594,656)
Financial income	896,553	7,383	903,936
Financial expenses	(1,462,297)	(36,295)	(1,498,592)
Operating profit	1,478,358	(84,196)	1,394,162
Income tax and social contribution	(530,568)	10,878	(519,690)
Deferred income tax and social contribution	58,754	10,878	69,632
Net income	947,790	(73,318)	874,472
Attributed to controlling shareholders	958,650	(62,878)	895,772
Attributed to non-controlling interest	(10,860)	(10,440)	(21,300)
STATEMENTS OF COMPREHENSIVE INCOME
Total comprehensive income, net of taxes	(57,201)	-	(57,201)
Comprehensive income	890,589	(73,318)	817,271
Attributed to controlling shareholders	901,384	(62,878)	838,506
Attributed to non-controlling interest	(10,795)	(10,440)	(21,235)
STATEMENTS OF CHANGES IN EQUITY
Net income	947,790	(73,318)	874,472
Equity	15,155,446	(177,304)	14,978,142
STATEMENTS OF CASH FLOWS
Cash flows from operational activities	1,476,818	-	1,476,818
Net income	947,790	(73,318)	874,472
Unrealized monetary and exchange variations - net	1,142,316	28,912	1,171,228
Deferred income tax and social contribution	(58,754)	(10,878)	(69,632)
Equity in earnings of investees	(221,695)	55,284	(166,411)
Cash flows from investment activities	(2,511,075)	-	(2,511,075)
Cash flows from financing activities	535,603	-	535,603
Change in cash and cash equivalents	(498,654)	-	(498,654)
Basic and diluted earnings per share attributable to
shareholders of parent company:
Common shares	3.34587	(0.21946)	3.12641
Class “A” preferred shares	3.68045	(0.24139)	3.43906
Class “B” preferred shares	3.68045	(0.24139)	3.43906

12.31.2015	As previously stated	Adjustments	Restated
STATEMENTS OF FINANCIAL POSITION
Assets	28,947,657	(103,986)	28,843,671
Current assets	6,933,397	(111,760)	6,821,637
Bonds and securities	406,274	(111,760)	294,514
Noncurrent assets	22,014,260	7,774	22,022,034
Investments	2,224,710	7,774	2,232,484
Liabilities	28,947,657	(103,986)	28,843,671
Equity	14,584,478	(103,986)	14,480,492
Attributable to controlling shareholder's	14,245,728	(83,189)	14,162,539
Profit retention reserve	5,413,572	(83,189)	5,330,383
Attributable to non-controlling interest	338,750	(20,797)	317,953
STATEMENTS OF INCOME
Operational expenses / income	(1,020,077)	(4,955)	(1,025,032)
Equity in earnings of investees	92,545	(4,955)	87,590
Profit before financial results and taxes	2,126,451	(4,955)	2,121,496
Financial results	(328,671)	(99,031)	(427,702)
Financial expenses	(1,098,298)	(99,031)	(1,197,329)
Operating profit	1,797,780	(103,986)	1,693,794
Net income	1,265,551	(103,986)	1,161,565
Attributed to controlling shareholders	1,192,738	(83,189)	1,109,549
Attributed to non-controlling interest	72,813	(20,797)	52,016
STATEMENTS OF COMPREHENSIVE INCOME
Total comprehensive income, net of taxes	291,344	-	291,344
Comprehensive income	1,556,895	(103,986)	1,452,909
Attributed to controlling shareholders	1,483,587	(83,189)	1,400,398
Attributed to non-controlling interest	73,308	(20,797)	52,511
STATEMENTS OF CHANGES IN EQUITY
Net income	1,265,551	(103,986)	1,161,565
Equity	14,584,478	(103,986)	14,480,492
STATEMENTS OF CASH FLOWS
Cash flows from operational activities	1,320,728	-	1,320,728
Net income	1,265,551	(103,986)	1,161,565
Unrealized monetary and exchange variations - net	617,197	99,031	716,228
Equity in earnings of investees	(92,545)	4,955	(87,590)
Cash flows from investment activities	(1,951,618)	-	(1,951,618)
Cash flows from financing activities	1,371,486	-	1,371,486
Change in cash and cash equivalents	740,596	-	740,596
Basic and diluted earnings per share attributable to
shareholders of parent company:
Common shares	4.16287	(0.29034)	3.87253
Class “A” preferred shares	4.57807	(0.31817)	4.25990
Class “B” preferred shares	4.56917	(0.30938)	4.25979

Basis of Consolidation

4.2.1       Calculation of equity in earnings of investees

Payment of dividends decreases the carrying value of investments.

When required, for calculation of equity in earnings of investees, the investees' financial statements are adjusted to adapt their policies to the Parent Company's accounting policies.

4.2.2       Subsidiaries

The subsidiaries are entities to which the investor is exposed to, or has a right over the variable returns arising from its involvement with them and has the ability to affect those returns exerting its power over the entities.

The financial statements of the subsidiaries are included in the consolidated financial statements as from the date they start to be controlled by the Company until the date such control ceases.

The balances of the subsidiaries’ assets and liabilities, and profit or loss, are consolidated and transactions between consolidated companies are eliminated.

4.2.3       Interest of non-controlling shareholders

Non-controlling interest is presented in equity, separately from the equity attributable to the Parent Company's shareholders. Profits, losses and other comprehensive income are also allocated separately from the ones allocated to the Parent Company's shareholders, even if this results in non-controlling interest having a deficit balance.

4.2.4       Joint ventures and associates

Joint ventures are entities over which the Company, subject to an agreement, has the ability to affect returns exerting its power in conjunction with other parties, irrespective of the percentage of interest in the voting capital.

Associates are entities over which the Company exerts significant influence regarding financial and operational decisions, without control.

When the share in losses of a joint venture or associate equals or exceeds the accounting balance of the investor’s equity interest in the investee, the investor should discontinue the recognition of its share in future losses. Additional losses will be considered, and a liability will be recognized, only if the investor incurs legal or constructive obligations, or performs payments on behalf of the investee. Should the investee subsequently determine profits, the investor should resume the recognition of its interest in these profits only after the point at which the portion to which it is entitled to in these subsequent profits equals its share in unrecognized losses.

4.2.5       Joint operations (consortiums)

Joint operation is a joint business according to which parties that jointly control the business have rights on assets and obligations regarding liabilities related to the business.

Joint operations are recorded in the Company which is holding the share, in proportion to the quotas of assets, liabilities and income (loss).

Financial Instruments

The Company does not use derivative financial instruments.

Non-derivative financial instruments are recognized on the trading date, i.e. when the obligation or right arises. They are initially recognized at fair value plus any directly attributable transaction costs.

Fair values are determined based on the market quotation, for financial instruments traded in active markets, and for those with no quotations available on the market, fair values are determined by the present value of expected cash flows method.

After the initial recognition, the non-derivative financial instruments are measured as described below:

Financial assets

4.3.1       Financial instruments at fair value through profit or loss

Financial instruments designated as such upon initial recognition are classified as held for trading and if the Company manages these investments and make purchase or sale decisions based on their fair value in the context of an investment and risk management strategy. After initial recognition, transaction costs and attributable interests, when incurred, are recognized through profit and loss.

4.3.2       Loans and receivables

This category only comprises non-derivative assets with fixed or determinable payments which are not quoted in any active markets. They are measured using the amortized cost or effective interest rate methods.

4.3.3       Financial instruments available-for-sale

The initial and subsequent measurement of financial instruments classified as “available for sale” is based on their fair value. The changes in the fair value resulting from the difference between the market interest rates and the effective interest rates are recognized in other comprehensive income, net of taxes. Interest set at the beginning of the agreement, calculated based on the effective interest rate method, as well as any changes in expected cash flows, are recognized directly in income for the period. At settlement of a financial instrument classified as available for sale, any gains or losses recognized in OCI are reclassified to income for the year.

4.3.4       Financial instruments held to maturity

If the Company is interested in and capable of holding any financial assets until maturity, they are classified as held to maturity. They are measured at amortized cost using the effective interest rate method, deducting any reductions in their recoverable value. 

Financial liabilities and equity instruments

4.3.5       Financial liabilities measured at fair value through profit or loss

Financial liabilities designated as such upon initial recognition are classified as held for trading. They are stated at fair value and related gains or losses are recognized in income. The net losses or gains recognized in the income statement also include interest paid on the financial liability.

4.3.6       Other financial liabilities

Other financial liabilities are measured at amortized cost, using the effective interest method. This method is also used to allocate interest expense of these liabilities for the period. The effective interest rate is the rate that exactly discounts estimated future cash flows (including fees paid or received that form an integral part of the effective interest rate, transaction costs and other premiums or discounts) over the expected life of the financial liability or, when appropriate, over a shorter period, to the net carrying amount of the financial liability.

4.3.7       Derecognition of financial liabilities

The Company derecognizes financial liabilities only when its obligations are discharged, canceled or settled. The difference between the book value of the derecognized financial liability and the corresponding disbursement made or to be made is recorded to income.

Net sectorial financial assets and liabilities and related to the concession

4.3.8       Net sectorial financial assets and liabilities

An amendment to the concession agreement of distribution companies, approved by ANEEL Order No. 4,621/2014, provides that, in the event of termination of the concession for any reason, the residual values of Part A items and other financial components not recovered or returned through tariff are incorporated in the calculation of compensation or deducted from unamortized assets indemnity values, thus protecting rights or obligations of the distribution company to the Granting Authority.

Accordingly, the related sectorial financial assets and liabilities comply with the criteria established by the conceptual framework for Financial Reporting issued by IASB, mandating the recognition of such sector financial assets and liabilities of electricity distribution companies as from the year 2014. Thus, Copel Distribuição recognized the related sector financial assets and liabilities in its statutory financial statements in December 2014. 

The Company accounts for variations in sectorial financial assets and liabilities when there is a probable expectation that future revenue, equivalent to the costs incurred, will be billed and charged, resulting in the direct transfer of costs at an adjusted tariff according to the parametric formula defined in the concession agreement. The balance of these variations is retained and updated until the next tariff adjustment / review, when the Granting Authority authorizes the transfer in the Company’s tariff basis and consequently the transfer to the consumer in the next annual cycle, which occurs as from June 24 of each year.

4.3.9       Accounts receivable related to the concession

Power transmission concession

These refer to receivables in connection with the power transmission concession agreements and include the following amounts: (i) revenues from the construction of transmission infrastructure for use by system users; (ii) the financial return on these revenues guaranteed by the Granting Authority during the concession period.

Revenues under power transmission concession agreements are collected by making infrastructure available to system users and are not subject to demand risk, and are thus considered guaranteed revenues, called Annual Permitted Revenues (Receita Anual Permitida or RAP, in Portuguese) to be received during the concession period. Amounts are billed monthly to the users of this infrastructure, pursuant to reports issued by the National System Operator (Operador Nacional do Sistema or ONS, in Portuguese). Upon expiration of the concession, any uncollected amounts related to the construction of infrastructure shall be received directly from the Granting Authority, as an unconditional right to cash reimbursement pursuant to the concession agreement, as compensation for investments made and not recovered through tariffs (RAP).

These financial assets do not have active market, have fixed and determinable cash flows, and therefore are classified as “loans and receivables”. They are initially estimated based on their respective fair values and later measured according to the amortized cost calculated under the effective interest rate method.

Specifically to the Concession Agreement 060/2001, the subsequent additions, which represents expansion, improvement or enhancement of infrastructure, are recognized as a concession financial asset by virtue of representing the future generation of additional operating cash, according to specific rules from the Granting Authority.

Power distribution service concession

These refer to reimbursements set forth in the public power distribution service concession agreements, which the Company understands as an unconditional right to cash payments from the Granting Authority upon expiration of the concession. These reimbursements are designed to reimburse Copel DIS for the investments made in infrastructure, which have not been recoverable through the collection of tariffs at the end of the concession because of their useful lives being longer than the term of said concession.

Since these financial assets do not have determinable fixed cash flows - as the Company operates under the assumption that the value of the corresponding reimbursements will be based on the replacement cost of the concession assets and as they do not feature the necessary characteristics to be classified under any other category of financial assets – they are classified as “available for sale”. The cash flows related to these assets are determined taking into account the Regulatory Compensation Basis (Base de Remuneração Regulatória or BRR, in Portuguese), defined by the Granting Authority. The methodology of the BRR is based on the replacement cost of the assets that make up the power distribution infrastructure related to the concession. This tariff basis (BRR) is reviewed every four years taking into account several factors. Its goal is to reflect the variation in the prices of physical assets, including write-offs, depreciation, and additions of assets to the concession infrastructure (physical assets).

The return on these financial assets is based on the regulatory Weighted Average Cost of Capital or WACC approved by ANEEL in the periodic rate review process, whose amount is included in the tariffs charged to customers and collected monthly.

1st, 2nd, 3rd and 4th Tariff Readjustment Cycles were conducted every four years and, beginning on the 5th cycle, which started in January 2016, they will be conducted every five years, considering a change introduced by the fifth amendment to the concession agreement.

Gas Concession

Gas concession agreement falls the bifurcated model, where part of the investments made by the concessionaire is paid by users of the public service and the other part is indemnified by the Granting Authority, the State of Paraná, at the end of the concession. This model contemplates the recognition of financial assets and intangible assets.

The amount recognized as a financial asset is the one that will be indemnified by the Granting Authority corresponding to the investments made in the last ten years prior to the end of the concession as foreseen in the agreement and which the Company understands as an unconditional right to cash payments from the Granting Authority upon expiration of the concession.

Since these financial assets do not have determinable fixed cash flows – as the Company operates under the assumption that the value of the corresponding reimbursements will be based on the replacement cost of the concession assets and as they do not feature the necessary characteristics to be classified under any other category of financial assets – they are classified as “available for sale”.

4.3.10     Accounts receivable from concession indemnification

Arises from the residual balance of assets of the power transmission and generation infrastructure not yet depreciated and / or amortized existing at the end of the concession.

The amounts are transferred from Accounts receivable related to the concession, Property, plant and equipment and Intangible assets to the power transmission and generation activities, respectively, with the end of the concession.

At the end of each reporting period, Management evaluates the recoverability of the asset, remeasuring its cash flow based on its best estimate.

4.3.11     Accounts payable related to the concession

Refers to the amounts set forth in the concession agreement in connection with the right to explore hydraulic energy potential (onerous concession), whose agreement is signed as Use of Public Property (Uso do Bem Público or UBP, in Portuguese) agreements. The asset is recognized on the date of signature of the concession agreement, corresponding to the present value of future cash payments for the concession. The liability is then remeasured using the effective interest rate and reduced by contracted payments.

Inventories (including property, plant and equipment and intangible assets - concession agreement)

Materials and supplies in inventory, classified under current assets and those assigned for investments, classified under property, plant and equipment, and intangible assets – concession agreements, have been recorded at their average acquisition cost. Recorded amounts do not exceed their net realizable value.

Property, Plant and Equipment

The assets related to the public service concession agreement are depreciated according to the straight-line method based on annual rates set forth and reviewed periodically by ANEEL, which are used and accepted by the market as representative of the economic useful life of the assets related to concession's infrastructure. Assets related to contracts for the use of public property under the independent electricity producer scheme are depreciated based on annual rates established by ANEEL limited to the concession period. All other fixed assets are depreciated using the straight-line method based on estimates of their useful lives.

Costs directly attributable to construction work as well as interest and financial charges on loans from third parties during construction are recorded under property, plant and equipment in progress, if it is probable that they will result in future economic benefits for the Company.

Intangible Assets

Software acquired from third parties and those internally developed are measured at acquisition cost and depreciated over five years. Intangibles from Concession Agreements are discussed below.

4.6.1       Onerous concession of electric power generation

Corresponds to acquisition of exploration rights on hydropower potential whose contract is signed as Use of Public Property - UBP. 

During construction work, this asset is recognized at the present value of future cash disbursements during the Concession Agreement term. When commercial operation starts, the amount starts to be amortized during the concession period.

4.6.2       Hydrological risk renegotiation (Generation Scaling Factor - GSF)

Asset consisting of the renegotiation of the hydrological risk under the terms of Law No. 13,203/2015, arising from the excess amount between the amounts recovered from the cost with the adjustment of the Energy Reallocation Mechanism - MRE (GSF) subtracted from the total cost of the risk premium to be amortized over the energy supply period in the regulated environment. The amount was transformed by Aneel into an extension of the concession period, which is amortized on a straight-line basis as from January 1, 2016 until the end of the new concession period, according to note 14.1.

4.6.3       Concession agreement – electricity distribution

These comprise the right to control infrastructure, built or acquired by the operator or provided to be used by the operator as part of the electric energy public service concession agreement (the right to charge fees to the users of the public service provided by the operator), in compliance with IAS 38 – Intangible Assets, and IFRIC 12 – Concession Agreements.

Intangible assets are recorded at their fair acquisition and construction value, less accumulated amortization and impairment losses, when applicable.

The amortization of intangible assets reflects the pattern in which it is expected that future economic benefits will flow to Copel DIS during the concession period.

4.6.4       Concession agreement – gas distribution

Intangible assets from the construction of infrastructure and the purchase of assets required for the provision of gas distribution services correspond to the right to charge users for the gas supply.

This intangible asset was initially recognized at acquisition, formation or construction cost, plus interest and other capitalized finance charges. This asset is amortized using the straight-line basis over its estimated useful life, considering the economic benefits generated by intangible assets.

4.6.5       Intangible assets acquired separately

Intangible assets with a defined useful life, acquired separately, are recorded at cost, less accumulated amortization and accumulated impairment losses. Amortization is recognized using the straight-line method based on the estimated useful lives of the corresponding assets. The estimated useful lives and the amortization method are reviewed at the end of each reporting period, with the effect of any changes in estimate being accounted for on a prospective basis. 

4.6.6       Derecognition of intangible assets

An intangible asset is derecognized when no future economic benefits are expected from use or disposal. Gains or losses arising from disposal of an intangible asset are recognized in profit or loss, measured as the difference between net disposal proceeds and the carrying amount of the asset.

Impairment of Assets

Assets are assessed to detect evidence of impairment.

4.7.1       Financial assets

A financial asset not measured at fair value through profit or loss is assessed at each reporting date to determine whether there is objective evidence that it might be impaired. A financial asset is considered to be impaired if objective evidence indicates that a loss event has occurred after the initial recognition of the asset and that the loss event had a negative effect on the estimated future cash flows that can be reliably estimated.

The Company considers evidence of impairment of receivables at both the individual and collective levels. All individually significant receivables are valued for the specific loss of value.

An impairment of a financial asset measured at amortized cost is calculated as the difference between the carrying amount and the present value of estimated future cash flows, discounted at the effective original interest rate of the financial asset. Losses and their reversals are recognized in profit or loss and reflected in an allowance account against receivables.

4.7.2       Non-financial assets

Assets under formation arising from onerous concession and concession rights and / or authorization to generate electricity, classified as intangible assets, are tested along with the other assets of that cash-generating unit.

Whenever there is a loss resulting from situations where an asset’s carrying value exceeds its recoverable value, defined as the greater between the asset’s value in use and its net selling price, this loss is recognized in profit or loss for the year.

For impairment assessment purposes, assets are grouped at the lowest levels for which there are separately identifiable cash flows (Cash Generating Units - CGU).

The amount of the impairment of non-financial assets is reviewed for the analysis of a possible reversal at the reporting date, in case of reversal of loss of prior years, this is recognized in current year's profit or loss. 

Provision

Provisions are recognized when, and only when: i) the Company has a present obligation (legal or constructive) resulting from a past event, ii) it is probable (i.e., more likely than not) that an outflow of resources embodying economic benefits will be required to settle the obligation, and iii) a reliable estimate can be made of the amount to settle the obligation.

The estimates of outcomes and financial impacts are determined by the Company's management judgment, supplemented by experience of similar transactions and, in some cases, by independent expert reports.

Social-environmental liabilities are recognized as the Company assumes formal obligations before regulatory agencies or becomes aware of potential risks related to socio-environmental issues, which may lead to cash disbursements that are deemed probable and that may be estimated. During the project implementation phase, the accrued amounts are recorded against property, plant and equipment (generation), construction cost (transmission) or intangible assets in progress (distribution). At the start of operations, all costs included in the Operating License, whose programs will be executed during the concession and the respective disbursement has not yet occurred, are measured and adjusted to present value according to the estimated cash flow of disbursements and recorded as social-environmental provisions in counterpart to the assets related to the project, being adjusted periodically.

Once the project enters commercial operation, all costs or expenses incurred with socio-environmental programs related to the project’s operation and maintenance licenses are analyzed according to their nature and recorded directly to profit or loss for the period.

Revenue Recognition

Operating revenues are recognized when: (i) the revenue amount can be reliably measured; (ii) the costs incurred or to be incurred in the transaction are reliably measurable; (iii) it is likely that the economic benefits will be received by the Company; and (iv) the risks and rewards have been fully transferred to the buyer.

Revenue is measured at the fair value of the consideration received or receivable, less discounts and/or bonuses granted and charges on sales.

4.9.1       Unbilled revenues

Refers to revenues from electricity sales to final customers, electricity sales to distributors, use of the main distribution and transmission grid and telecommunication services, from the period between the last billing and the end of each month, by estimate based on the last measurement taken. 

4.9.2       Interest

Revenue from interest is recognized when it is probable that future economic benefits will flow to the Company and the revenue value can be reliably measured. Interest revenue is recognized at the straight-line basis and based on time and effective interest rate on outstanding principal amounts. The effective interest rate is the one that discounts exactly estimated future cash receipts calculated during the estimated life of the financial asset in relation to initial net book value of that asset.

Construction Revenues and Costs

Revenue related to construction services for infrastructure in the power transmission and distribution services, and gas distribution, are recognized using the stage of completion method.

Related costs are recognized in the income statement as construction cost.

Given that Copel DIS and Compagás outsource the construction of distribution infrastructure to unrelated parties and works are carried out over short periods, the construction margin to the power and gas distribution activities result in no significant amounts, resulting in the non-recognition of such margin.

The construction margin adopted for the transmission activity for the years 2017 and 2016 was 1.65%, and results from a calculation methodology which takes into account the respective business risk.

Power Purchase and Sales Transactions in the Spot Market (Electric Energy Trading Chamber - CCEE)

Power purchase and sales transactions in CCEE are recorded on the accrual basis according to the information disclosed by this Trading Chamber or to estimates prepared by the Management of the subsidiaries when public information is not yet available.

Leases

Leases are classified as finance leases whenever the terms of the lease transfer substantially all the risks and rewards of ownership to the lessee. Other leases are classified as operating.

New Standards that are Not Yet in Effect

A number of new IFRS standards and amendments to the standards and interpretations were issued by the IASB and had not yet come into effect for the year ended December 31, 2017. Consequently, the Company and its subsidiaries has not adopted them in advance.

The new rules that may have an impact on the Company and its subsidiaries are mentioned below:

4.13.1     IFRS 9 - Financial Instruments

IFRS 9 is effective for the financial statements of an entity prepared in accordance with IFRS for annual periods beginning on or after January 1, 2018 and earlier application is permitted. 

This standard establishes new requirements for classification and measurement of financial assets and liabilities. Financial assets are classified into three categories: (i) measured at fair value through profit or loss; (ii) measured at amortized cost, based on the business model within which they are held and the characteristics of their contractual cash flows; and (iii) measured at fair value through other comprehensive income.

With regard to financial liabilities, the main alteration in relation to the requirements already set by IAS 39 defines that any change in fair value of a financial liability designated at fair value through profit or loss attributable to changes in the liability's credit risk to be stated in other comprehensive income and not in the statement of profit or loss, unless such recognition results in a mismatching in the statement of profit or loss.

In relation to the impairment of financial assets, IFRS 9 defines an expected credit loss model, as opposed to an incurred credit loss under IAS 39. The new model requires an entity to account for expected credit losses and changes in those expected credit losses at each reporting date to reflect changes in credit risk since initial recognition. In other words, it is no longer necessary for a credit event to have occurred before credit losses are recognized.

Regarding the modifications related to hedge accounting, IFRS 9 retains three types of mechanisms currently available in IAS 39. Under IFRS 9, greater flexibility has been introduced to the types of transactions that are eligible for hedge accounting, more specifically regarding the types of instruments that qualify as hedging instruments and the types of risk components of nonfinancial items eligible for hedge accounting.

In addition, the effectiveness test has been overhauled and replaced with the principle of an “economic relationship”. Retrospective assessment of hedge effectiveness is also no longer required and enhanced disclosure requirements about an entity’s risk management have also been introduced.

Based on the analysis of the financial assets and liabilities of Copel and its subsidiaries at 12.31.2017, considering the facts and circumstances existing on that date, the Company assessed the impact of IFRS 9 on the consolidated financial statements, as follows:

Classification and measurement

The Company assessed the classification and measurement of financial assets and, in accordance with the model for management of these assets, early identified the change in the classification of the instruments below. The Company’s management believes that the change in the classification will not significantly affect the measurement of items, thus with no effect on retained earnings.

Financial instrument	Actual classification (IAS 39)	New classification IFRS 9
Bonds and securities	Available for sale	Fair value through profit or loss
Collaterals and escrow accounts	Loans and receivables	Amortized cost
Trade accounts receivable	Loans and receivables	Amortized cost
CRC transferred to the State Government of Paraná	Loans and receivables	Amortized cost
Sectorial financial assets	Loans and receivables	Amortized cost
Accounts receivable related to the concession - transmission (amortizable)	Loans and receivables	Amortized cost
Accounts receivable related to the concession - transmission (indemnable)	Loans and receivables	Fair value through profit or loss
Accounts receivable related to the concession - bonus from the grant	Loans and receivables	Amortized cost
Accounts receivable related to the concession - distribution	Available for sale	Fair value through profit or loss
Accounts receivable related to the concession compensation	Available for sale	Fair value through profit or loss
State of Paraná - Government Programs	Loans and receivables	Amortized cost
Other temporary investments	Available for sale	Fair value through profit or loss

Impairment

IFRS 9 requires the Company’s management to carry out an assessment in light of twelve months or throughout the life of the financial asset and record the effects in case of indication of expected credit losses on financial assets.

The Company will apply the simplified approach and will record expected losses throughout the life of financial assets of trade accounts receivable. Based on the assessment made during 2017, the Company understands that the allowance for doubtful accounts (allowance for impairment of trade accounts receivable) should increase between R$25,000 and R$30,000, which will be recognized in the opening balance sheet in the retained earnings account on January 1, 2018, net of taxes.

The Company did not designate nor does it intend to designate financial liabilities as fair value through profit or loss, thus no impact is expected on the classification of financial liabilities, in accordance with the requirements of IFRS 9. 

Transition: The changes in accounting policies arising from the adoption of IFRS 9 are generally applied retrospectively. However, the Company will take advantage of the exemption set forth by item 7.2.15 of the standard, whereby it is authorized not to restate prior period’s comparative information in connection with the changes in classification and measurement of financial instruments.

Moreover, as the Company does not apply hedge accounting, Management concluded that there will not be impact on its financial statements as a result of the amendments to standard.

4.13.2     IFRS 15 - Clarifications to IFRS 15 Revenue from contracts with customers

IFRS 15 provides a single, straightforward model for accounting for contracts with customers, and when it comes into effect, it will supersede the current guide for revenue recognition provided in IAS 18 – Revenue and IAS 11- Construction contracts and related interpretations.

The standard establishes that an entity will recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard introduces a five-step model for revenue recognition: (i) Identify the contract with the customer; (ii) Identify the performance obligations in the contract; (iii) Determine the transaction price; (iv) Allocate the transaction price to the performance obligations in the contract; and (v) Recognize revenue when (or as) the entity satisfies a performance obligation.

Under IFRS 15, an entity recognizes revenue when (or as) the entity satisfies a performance obligation, i.e., when the "control" over the goods and services in a certain operation is transferred to the customer, and will establish a greater level of detail in the disclosures.

In addition to providing broader disclosures on revenue transactions, the Company does expect the application of IFRS 15 to have a significant effect on the equity and financial position and/or performance of its subsidiaries.

The Company’s subsidiaries recognize revenues from the following sources:

Electric power supply and delivery (generation, trading and distribution)

The Company recognizes revenue from electric power supply and delivery at fair value of consideration through the delivery of electric power to the customer. Billed revenue consists of the delivery of bills, evidencing the amount of consumption by customer in a given period, multiplied by the tariff in force, validated by Aneel. Additionally, the Company recognizes unbilled revenue for the period ranging from the last billing to the end of month, on an estimate basis, based on the last metering. 

In accordance with IFRS 15, the Company shall recognize revenue from a contract with the customer whenever the expected receipt is probable, taking into consideration the customer’s intention to pay. Should no receipt be expected, the Company may not recognize revenue upon billings, but instead upon receipt. Based on data available at December 31, 2017, the Company assessed customers with a long history of payment default that, for a number of reasons, did not have their power supply cut, and also the potential effects of IFRS 15, concluding that the impact is not material and that, in light of the Company’s policies, a provision for loss will be set up on such receivables and monthly monitored.

Use of the main distribution and transmission grid

The Company recognizes revenue from the distribution network service made available to captive and free consumers at fair value of consideration, according to the tariff in force and validated by ANEEL.

In the distribution segment, the Company should comply with certain continuity indicators, which will give rise to the calculation of compensation to the consumer, if exceeded. The individual continuity indicators are Individual Interruption Duration - DIC, Individual Interruption Frequency - FIC, Maximum Continuous Interruption Duration - DMIC and Individual Interruption Duration on a critical day - DICRI. They are currently recorded as operating expenses and, in accordance with the assessment, will from January 1, 2018 on be recorded as reducing the revenue from electric network availability. The company assessed that the amount that would be reclassified from operating expenses to revenue deduction amounts to nearly R$22,118, based on amounts of 2017, but without effects in the consolidated financial statements.

This group also includes revenue from operation and maintenance of infrastructure of services for availability of use of the transmission network, corresponding to a percentage of RAP billing. The Company recognizes revenue at fair value of consideration receivable when RAP billing is disclosed. Based on its assessment, the Company does not expect the application of IFRS 15 to have a significant impact on such revenue on its financial statements.

Sale of energy in the spot market - CCEE

The Company recognizes this revenue in accordance with the energy settled in the spot market for the Price of Settlement of Differences - PLD.

The Company assessed the potential effects of the application of IFRS 15 on revenue from sale of spot energy, concluding that there is no impact on its financial statements, except for the requirements of presentation and disclosure, which will be presented in further details beginning 2018.

Revenue from construction

Revenue from construction is recognized over the time based on the percentage of completion of the work at the end of each period and measured in the proportion of costs incurred in relation to total estimated costs of distribution and transmission concession agreements. 

The Company assessed the potential effects of the application of IFRS 15 on revenue from construction, concluding that there are no effects on its financial statements, except for the requirements for presentation and disclosure that will be presented in further details beginning 2018.

Results of sectorial financial assets and liabilities

The Company recognizes revenue from results of sectorial financial assets and liabilities in view of the variation between budget and actual value of non-manageable costs of Tranche A (Offsetting and Variation of Tranche A account - CVA) and other financial components. According to the contractual guarantee, residual amounts, if any, not passed on through tariff will be included in the calculation of compensation, as the concession ceases to exist. 

The Company assessed the potential effects of the application of IFRS 15 on revenue from result of sectorial financial assets and liabilities, concluding that there are no effects on its financial statements, except for the requirements for presentation and disclosure that will be presented in further details beginning 2018.

Revenue from telecommunications

Revenue from telecommunications comprises mainly Connectivity (multimedia communication service), Activation of Customers, Benefits Programs and IT and Communication Services (TIC), which are recognized at fair value of consideration over time.

Revenue from Connectivity is recognized through provision of high speed internet to the customer.

Revenue from Activation is recognized in a specific moment, should the customer opt for non-loyalty to the Connectivity plan. Should the customer opt for loyalty, a discount is given in the amount of provision of service during the plan, and revenue will be deferred over twelve months. The Company assessed that the adjustment of deferred revenue to be recognized in 2018 reaches R$2,961, based on agreements ruling at December 31, 2017.

Revenue from the Benefits Program arises from the availability of exclusive access by third party websites of digital contents by streaming, whose value is included in the connectivity plan. The Company concluded that there is no effect on the financial statements, except for the requirements for presentation and disclosure that will be presented in further details beginning 2018.

Revenue from IT and Communication Services (TIC) is recognized over time, in accordance with the number of hours worked or the fixed value per month in view of the contractual provisions.

The Company assessed the potential effects of the application of IFRS 15, concluding that there are no material effects on its financial statements, except for the requirements for presentation and disclosure that will be presented in further details beginning 2018. 

Piped gas distribution

The Company recognized revenue from sale of gas at fair value of consideration through the delivery of piped gas to the customer.

The Company assessed the potential effects of the application of IFRS 15 on revenue from sale of piped gas, concluding that there are no effects on its financial statements, except for the requirements for presentation and disclosure that will be presented in further details beginning 2018.

Other revenues

The Company has other sources of revenue from the concession of public services inherent to its segments.

The Company assessed the potential effects of the application of IFRS 15 on other revenues, concluding that there are no effects on its financial statements, except for the requirements for presentation and disclosure that will be presented in further details beginning 2018.

Transition

For the revenues impacted by the adoption of IFRS 15, the Company adopted the standard on the date of initial application as an adjustment to the opening balance in shareholders' equity, considering only the contracts that are not completed at the date of initial application, accordingly the Appendix C of IFRS 15, in its items C3(b) and C7.

4.13.3     IFRS 16 - Leases

Issued on January 13, 2016, establishes, in the lessee’s view, a new form for accounting for leases currently classified as operating leases, which are now recognized similarly to leases classified as finance leases. As regards the lessors, it virtually retains the requirements of IAS 17, including only some additional disclosure aspects.

IFRS 16 is effective for annual periods beginning or on after January 1, 2019, and its early adoption is permitted as long as the entities also early adopt IFRS 15 Revenues from contracts with customers. The Company is assessing the potential impacts of the adoption of this new standard.

4.13.4     IFRIC 22 - Foreign Currency Transactions and Advance Consideration

Issued on December 8, 2016, International Financial Reporting Interpretations Committee - IFRIC 22 deals with the exchange rate to be used in transactions that involve the consideration paid or received in advance in foreign exchange transactions.

This IFRIC is effective for annual periods beginning on or after January 1, 2018, and its early adoption is permitted. 

The transactions in foreign currency of the Company are currently restricted to debt instruments with international financial institutions, measured at fair value, and to the acquisition of energy from Itaipu. Since assets and liabilities measured at fair value are not within the scope of the IFRIC and that there are no advance payments on transactions with Itaipu, the Company estimates that IFRIC 22 will not have material impacts on its consolidated financial statements.

4.13.5     Amendments to IAS 40 - Investment Property

Issued on December 8, 2016, the amendments to IAS 40 clarify the requirements relating to transfers from or to investment properties. The amendments are effective for annual periods beginning on or after January 1, 2018, and its early adoption is permitted.

The Company has assessed the potential impacts of the adoption of IAS 40 and the conclusion is that there is no material impact on its financial statements.

4.13.6     Annual Improvements to IFRS 2014 - 2016 Cycle

Every year, IASB discusses and decides on the proposed improvements to IFRS as they arise during the period. Issued on December 8, 2016, the improvements deal with the following subjects:

i) amendments to IFRS 1 - excludes from the standard some exceptions existing for application in the transition period of the entities that are new IFRS adopters.

ii) amendments to IFRS 12 - clarifies the scope of the pronouncement, in respect of interest of entities in other entities that are classified as available for sale or discontinued operations in accordance with IFRS 5.

iii) amendments to IAS 28 - clarifies if an entity has an option of "investment for investment" to measure the investees at fair value in accordance with IAS 28 for a risk capital organization.

Based on a preliminary assessment of the amendments, the Company's management believes that the application of these amendments should not have material impact on the disclosures or amounts recognized in its consolidated financial statements in future periods.

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1. Operations (Tables)

12 Months Ended

Dec. 31, 2017

Operations Tables

Subsidiaries

			Interest
Subsidiaries	Headquarters	Main activities	%	Investor
Copel Geração e Transmissão S.A. (Copel GeT)	Curitiba/PR	Production and transmission of electricity	100.0	Copel
Copel Distribuição S.A. (Copel DIS)	Curitiba/PR	Distribution and marketing of electricity	100.0	Copel
Copel Telecomunicações S.A. (Copel TEL)	Curitiba/PR	Telecommunication and communication	100.0	Copel
Copel Renováveis S.A. (Copel REN) (a)	Curitiba/PR	Control and management of interests	100.0	Copel
Copel Comercialização S.A. (Copel Energia)	Curitiba/PR	Commercialization of electricity	100.0	Copel
Companhia Paranaense de Gás - Compagás	Curitiba/PR	Distribution of pipeline gas	51.0	Copel
Elejor - Centrais Elétricas do Rio Jordão S.A.	Curitiba/PR	Production of electricity	70.0	Copel
Araucária Ltda (UEG)	Curitiba/PR	Production of electricity from natural gas	20.0	Copel
			60.0	Copel GeT
São Bento Energia, Investimentos e Participações S.A. (São Bento)	Curitiba/PR	Control and management of interests	100.0	Copel GeT
Nova Asa Branca I Energias Renováveis S.A.	S. Miguel do Gostoso/RN	Production of electricity from wind sources	100.0	Copel GeT
Nova Asa Branca II Energias Renováveis S.A.	Parazinho/RN	Production of electricity from wind sources	100.0	Copel GeT
Nova Asa Branca III Energias Renováveis S.A.	Parazinho/RN	Production of electricity from wind sources	100.0	Copel GeT
Nova Eurus IV Energias Renováveis S.A.	Touros/RN	Production of electricity from wind sources	100.0	Copel GeT
Santa Maria Energias Renováveis S.A.	Maracanaú/CE	Production of electricity from wind sources	100.0	Copel GeT
Santa Helena Energias Renováveis S.A.	Maracanaú/CE	Production of electricity from wind sources	100.0	Copel GeT
Ventos de Santo Uriel S.A.	João Câmara/RN	Production of electricity from wind sources	100.0	Copel GeT
Cutia Empreendimentos Eólicos S.A. (Cutia)	Curitiba/PR	Control and management of interests	100.0	Copel GeT
GE Olho D’Água S.A.	São Bento do Norte/RN	Production of electricity from wind sources	100.0	São Bento
GE Boa Vista S.A.	São Bento do Norte/RN	Production of electricity from wind sources	100.0	São Bento
GE Farol S.A.	São Bento do Norte/RN	Production of electricity from wind sources	100.0	São Bento
GE São Bento do Norte S.A.	São Bento do Norte/RN	Production of electricity from wind sources	100.0	São Bento
Central Geradora Eólica São Bento do Norte I S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Central Geradora Eólica São Bento do Norte II S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Central Geradora Eólica São Bento do Norte III S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Central Geradora Eólica São Miguel I S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Central Geradora Eólica São Miguel II S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Central Geradora Eólica São Miguel III S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Usina de Energia Eólica Guajiru S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Usina de Energia Eólica Jangada S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Usina de Energia Eólica Potiguar S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Usina de Energia Eólica Cutia S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Usina de Energia Eólica Maria Helena S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Usina de Energia Eólica Esperança do Nordeste S.A.(b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Usina de Energia Eólica Paraíso dos Ventos do Nordeste S.A. (b)	São Bento do Norte/RN	Production of electricity from wind sources	100.0	Cutia
Copel Brisa Potiguar S.A. was incorporated by Copel REN on 12.20.2017
(a) Company management is assessing whether a business purpose change or a closure and transfer of assets to the shareholder is required.
(b) Pre-operating stage.

Joint Ventures

			Interest
Joint ventures	Headquarters	Main activity	%	Investor
Voltalia São Miguel do Gostoso I Participações S.A.	São Paulo/SP	Interests in companies	49.0	Copel
Paraná Gás Exploração e Produção S.A. (a)	Curitiba/PR	Exploration of natural gas	30.0	Copel
Costa Oeste Transmissora de Energia S.A.	Curitiba/PR	Transmission of electricity	51.0	Copel GeT
Marumbi Transmissora de Energia S.A.	Curitiba/PR	Transmission of electricity	80.0	Copel GeT
Transmissora Sul Brasileira de Energia S.A.	Florianópolis/SC	Transmission of electricity	20.0	Copel GeT
Caiuá Transmissora de Energia S.A.	Rio de Janeiro/RJ	Transmission of electricity	49.0	Copel GeT
Integração Maranhense Transmissora de Energia S.A.	Rio de Janeiro/RJ	Transmission of electricity	49.0	Copel GeT
Matrinchã Transmissora de Energia (TP NORTE) S.A.	Rio de Janeiro/RJ	Transmission of electricity	49.0	Copel GeT
Guaraciaba Transmissora de Energia (TP SUL) S.A.	Rio de Janeiro/RJ	Transmission of electricity	49.0	Copel GeT
Paranaíba Transmissora de Energia S.A.	Rio de Janeiro/RJ	Transmission of electricity	24.5	Copel GeT
Mata de Santa Genebra Transmissão S.A. (b)	Rio de Janeiro/RJ	Transmission of electricity	50.1	Copel GeT
Cantareira Transmissora de Energia S.A.	Rio de Janeiro/RJ	Transmission of electricity	49.0	Copel GeT
(a) Project activities came to a halt in connection with a Public Class Action. Consortium members have requested the National Oil
Agency (ANP) a release from contractual obligations without encumbrances to bidders, and eventual return of sign-up bonus,
reimbursement of costs incurred and release from guarantees given.
(b) Pre-operating stage.

Associates

Associated companies	Headquarters	Main activity	Interest
			%	Investor
Dona Francisca Energética S.A.	Agudo/RS	Production of electricity	23.0303	Copel
Foz do Chopim Energética Ltda.(a)	Curitiba/PR	Production of electricity	35.77	Copel
Carbocampel S.A.	Figueira/PR	Coal exploration	49.0	Copel
Dois Saltos Empreendimentos de Geração de Energia Elétrica Ltda. (b)	Curitiba/PR	Production of electricity	30.0	Copel
Copel Amec S/C Ltda. - em liquidação	Curitiba/PR	Services	48.0	Copel
Sercomtel S.A. Telecomunicações (c)	Londrina/PR	Telecommunications	45.0	Copel
Dominó Holdings Ltda. (d)	Curitiba/PR	Interests in companies	49.0	Copel Energia
GBX Tietê II Empreendimentos Participações S.A.	São Paulo/SP	Incorporation of real estate projects	19.31	UEG
(a) In February 2018, the associated Foz do Chopim Energética Ltda. was transferred from Copel to Copel GeT, through an increase in the capital stock.
(b) Pre-operating stage.
(c) Investment reduced to zero due to the impairment tests.
(d) In November 2017, the company was transformed from a corporation into a limited liability company and the investment was changed from a joint venture to an associate.

Joint Operations (Consortiums)

Joint operations	Interest (%) Copel GeT	Other consortium members
Hydroelectric Power Plant Gov. Jayme Canet Júnior (Mauá)	51.0	Eletrosul Centrais Elétricas S.A.  (49.0%)
Hydroelectric Power Plant Baixo Iguaçu (Note 19.7.1) (a)	30.0	Geração Céu Azul S.A (subsidiary of Neoenergia S.A.) (70%)
(a) Pre-operating stage.

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2. Concessions and Authorizations (Tables)

12 Months Ended

Dec. 31, 2017

Concessions And Authorizations Tables

Concessions Contracts or Authorizations Obtained

Copel		Interest %	Maturity
Concession agreement / authorization of the equity
Copel DIS	Contract 046/1999, extended by 5th addendum to the contract	100	07.07.2045
Copel TEL	Authorization Term 54/2003 - Anatel/SVP/PVST	100	Indeterminate
	Authorization Term 305/2012 - Anatel/SVP/PVST	100	Indeterminate
Elejor	Contract 125/2001 - HPP Fundão and Santa Clara	70	05.28.2037
	Authorization - SHP Fundão I and SHP Santa Clara I - 753/2002 and 757/2002	70	12.18.2032
Dona Francisca Energética	Contract 188/1998 - HPP Dona Francisca	23	08.27.2033
Foz do Chopim	Authorization 114/2000 - SHP Arturo Andreoli	36	04.23.2030
UEG Araucária	Authorization 351/1999  - TPP Araucária (60% Copel GET)	20	12.22.2029
Compagás (2.1.1)	Concession gas distribution contract	51	01.20.2019
Dois Saltos (a)	Authorization 5,204/2015	30	04.22.2045
Paraná Gás (1.1.2 - a)	PART-T-300_R12 4861-.0000.99/2014-00 - ANP	30	05.15.2045
Usina de Energia Eólica São João S.A. (b)	MME Ordinance 173 /2012 - WPP São João	49	03.25.2047
Usina de Energia Eólica Carnaúba S.A. (b)	MME Ordinance 204 /2012 - WPP Carnaúbas	49	04.08.2047
Usina de Energia Eólica Reduto S.A. (b)	MME Ordinance 230 /2012 - WPP Reduto	49	04.15.2047
Usina de Energia Eólica Santo Cristo S.A. (b)	MME Ordinance 233/2012 - WPP Santo Cristo	49	04.17.2047
(a) Building under construction.
(b) Subsidiaries of Voltalia São Miguel do Gostoso I Participações S.A.
Hydroelectric Power Plant - HPP
Small Hydroelectric Plant - SHP
Thermal Power Plant - TPP
Wind Power Plant - WPP

Copel GeT		Interest %	Maturity
ONEROUS CONCESSION BY THE USE OF PUBLIC PROPERTY - UBP
Generation Concession 001/2007 - HPP Gov. Jayme Canet Júnior (Mauá)		51	07.02.2042
Generation concession 001/2011 - HPP Colíder (a)		100	01.16.2046
Ordinance 133/2011 - SHP Cavernoso II		100	02.27.2046
Generation Concession 002/2012 - HPP Baixo Iguaçu (a)		30	09.13.2049
Generation Concession 007/2013
HPP Apucaraninha		100	10.12.2025
HPP Chaminé		100	08.16.2026
HPP Derivação do Rio Jordão		100	11.15.2029
HPP Cavernoso		100	01.07.2031
PUBLIC SERVICE CONCESSIONS
Generation concession 045/1999
TPP Figueira		100	03.26.2019
HPP Gov. Bento Munhoz da Rocha Neto (Foz do Areia)		100	09.17.2023
HPP São Jorge		100	12.03.2024
HPP Guaricana		100	08.16.2026
HPP Gov. Ney Aminthas de Barros Braga (Segredo)		100	11.15.2029
HPP Gov. José Richa (Salto Caxias)		100	05.04.2030
Authorization 278/1999 - WPP Palmas		100	09.28.2029
Dispatch 182/2002 - Hydroelectric Generating Plant - HGP Melissa, HGP Pitangui and
HGP Salto do Vau (only register with ANEEL)		100	-
Generation concession 002/2016 - HPP Gov. Pedro Viriato Parigot de Souza (GPS)		100	01.05.2046
In progress for homologation from ANEEL - HPP Marumbi		100	-
Authorization Aneel 5,373/2015 - HGP Chopim I (only register with ANEEL)		100	-
Concession agreement / authorization of the equity
UEG Araucária	Authorization 351/1999 - TPP Araucária (20% - Copel)	60	12.22.2029
Nova Asa Branca I	MME Ordinance 267/2011 - WPP Asa Branca I	100	04.24.2046
Nova Asa Branca II	MME Ordinance 333/2011 - WPP Asa Branca II	100	05.30.2046
Nova Asa Branca III	MME Ordinance 334/2011 - WPP Asa Branca III	100	05.30.2046
Nova Eurus IV	MME Ordinance 273/2011 -WPP Eurus IV	100	04.26.2046
Santa Maria	MME Ordinance 274/2012 - WPP SM	100	05.07.2047
Santa Helena	MME Ordinance 207/2012 - WPP Santa Helena	100	04.08.2047
Ventos de Santo Uriel	MME Ordinance 201/2012 - WPP Santo Uriel	100	04.08.2047
GE Boa Vista	MME Ordinance 276 /2011 - WPP Dreen Boa Vista	100	04.27.2046
GE Farol	MME Ordinance 263 /2011 - WPP Farol	100	04.19.2046
GE Olho D’Água	MME Ordinance 343 /2011 - WPP Dreen Olho D'Água	100	05.31.2046
GE São Bento do Norte	MME Ordinance 310 /2011 - WPP Dreen São Bento do Norte	100	05.18.2046
Esperança do Nordeste	MME Ordinance 183/2015 - WPP Esperança do Nordeste (a)	100	05.10.2050
Paraíso dos Ventos do Nordeste	MME Ordinance 182/2015 - WPP Paraíso dos Ventos do Nordeste (a)	100	05.10.2050
Usina de Energia Eólica Jangada	Resolution 3,257/2011 - WPP GE Jangada (a)	100	01.04.2042
Maria Helena	Resolution 3,259/2011 - WPP GE Maria Helena (a)	100	01.04.2042
Usina de Energia Eólica Potiguar	MME Ordinance 179/2015 - WPP Potiguar (a)	100	05.10.2050
Usina de Energia Eólica Guajiru	Resolution 3,256/2011 - WPP Dreen Guajiru (a)	100	01.04.2042
Usina de Energia Eólica Cutia	Resolution 3,258/2011 - WPP Dreen Cutia (a)	100	01.04.2042
São Bento do Norte I	Ordinance 349/2015 - WPP São Bento do Norte I (a)	100	08.03.2050
São Bento do Norte II	Ordinance 348/2015 - WPP São Bento do Norte II (a)	100	08.03.2050
São Bento do Norte III	Ordinance 347/2015 - WPP São Bento do Norte III (a)	100	08.03.2050
São Miguel I	Ordinance 352/2015 - WPP São Miguel I (a)	100	08.03.2050
São MigueI lI	Ordinance 351/2015 - WPP São Miguel II (a)	100	08.03.2050
São Miguel III	Ordinance 350/2015 - WPP São Miguel III (a)	100	08.03.2050
(a) Building under construction.

Copel GeT		Interest %	Maturity
Transmission lines and substations concession agreements
Contract 060/2001 (extended by 3rd addendum to the contract) - Transmission facilities – several joint ventures		100	12.31.2042
Contract 075/2001 - Transmission line Bateias - Jaguariaíva		100	08.16.2031
Contract 006/2008 - Transmission line Bateias - Pilarzinho		100	03.16.2038
Contract 027/2009 - Transmission line Foz do Iguaçu - Cascavel Oeste		100	11.18.2039
Contract 010/2010 - Transmission line Araraquara 2 - Taubaté (a)		100	10.05.2040
Contract 015/2010 - Substation Cerquilho III		100	10.05.2040
Contract 022/2012 - Transmission line - Foz do Chopim - Salto Osório C2; Transmission line 230 kV Londrina - Figueira		100	08.26.2042
Contract 002/2013 - Transmission line - Assis - Paraguaçu Paulista II; Substation 230/88 kV Paraguaçu Paulista II		100	02.24.2043
Contract 005/2014 - Transmission line - Bateias - Curitiba Norte; Substation 230/138 kV Curitiba Norte		100	01.28.2044
Contract 021/2014 - Transmission line Foz do Chopim - Realeza; Substation Realeza 230/138 kV - Pátio novo 230 kV		100	09.04.2044
Contract 022/2014 - Transmission line Assis - Londrina		100	09.04.2044
Contract 006/2016 - Transmission line 525kV Curitiba Leste - Blumenau C1 (a)		100	04.06.2046
Contract 006/2016 - Transmission line 230 kV Uberaba - Curitiba Centro C1 e C2 (Underground) (a)
Contract 006/2016 - Substation 230/138 kV Curitiba Centro (SF6) - 230/138 kV - 2 x ATF 150 MVA (a)
Contract 006/2016 - Substation 230/138 kV Medianeira (Pátio novo 230 kV) - 2 x 150 MVA (a)
Contract 006/2016 - Transmission line 230 kV Baixo Iguaçu - Realeza (a)
Contract 006/2016 - Substation 230/138 kV Andirá Leste - 2 x ATR 150 MVA (a)
Concession agreement / authorization of the equity
Costa Oeste Transmissora	Contract 001/2012 - Transmission line Cascavel Oeste - Umuarama; Substation Umuarama 230/20138 kV	51	01.11.2042
Transmissora Sul Brasileira	Contract 004/2012 - Transmission line Nova Santa Rita - Camaquã 3;	20	05.09.2042
	Transmission line 230 kV Camaquã 3 - Quinta; Transmission line 525 kV Salto Santiago - Itá;
	Transmission line 525 kV Itá - Nova Santa Rita; Substation Camaquã 3 230/69/2013,8 kV
Caiuá Transmissora	Contract 007/2012 - Transmission line Umuarama - Guaíra; Transmission line 230 kV Cascavel Oeste - Cascavel Norte;	49	05.09.2042
	Substation Santa Quitéria 230/69-13,8 kV; Substation Cascavel Norte 230/20138-13,8 kV
Marumbi Transmissora	Contract 008/2012 - Transmission line Curitiba - Curitiba Leste; Substation Curitiba Leste 525/230 kV	80	05.09.2042
Integração Maranhense	Contract 011/2012 - Transmission line Açailândia - Miranda II	49	05.09.2042
Matrinchã Transmissora	Contract 012/2012 - Transmission line Paranaíta - Ribeirãozinho; Transmission line 500 kV Paranaíta - Cláudia;	49	05.09.2042
	Substation Cláudia 500 kV; Transmission line 500 kV Cláudia - Paranatinga; Substation Paranatinga 500 kV;
	Transmission line 500 kV Paranatinga - Ribeirãozinho
Guaraciaba Transmissora	Contract 013/2012 - Transmission line Ribeirãozinho - Marimbondo II;	49	05.09.2042
	Transmission line 500 kV Ribeirãozinho - Rio Verde Norte; Transmission line 500 Rio Verde Norte - Marimbondo II;
	Sectioning of Transmission lines 500 kV Marimbondo - Araraquara, at Substation Marimbondo II;
	Substation Marimbondo II 500 kV
Paranaíba Transmissora	Contract 007/2013 - Transmission line - T 500 kV Barreiras II - Rio das Éguas;	24.5	05.01.2043
	Transmission line 500 kV Rio das Éguas - Luziânia; Transmission line 500 kV Luziânia - Pirapora 2
Mata de Santa Genebra	Contract 001/2014 - Transmission line - Itatiba - Bateias (a); Transmission line 500 kV Itatiba - Bateias (a);	50.1	05.13.2044
	Transmission line 500 kV Araraquara 2 - Itatiba (a); Transmission line 500 kV Araraquara 2 - Fernão Dias (a);
	Substation Santa Bárbara D'Oeste 440 kV (a); Substation Itatiba 500 kV (a);
	Substation 500/440 kV Fernão Dias (a)
Cantareira Transmissora	Contract 019/2014 - Transmission line - Estreito - Fernão Dias (a)	49	09.04.2044
(a) Buildings under construction.

Impact to financials from accelerating expiry

	End of concession in 2024		End of concession
12.31.2017		Effects	in 2019
STATEMENTS OF FINANCIAL POSITION
Noncurrent assets
Accounts receivable related to the concession (Note 10.5)	148,868	154,800	303,668
Intangible assets (Note 20.3)	198,688	(154,800)	43,888
STATEMENTS OF INCOME
Net operating revenue
Fair value of assets from the indemnity for the concession	(197)	41,078	40,881

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4. Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Significant Accounting Policies Tables

Restatement of Comparative Balances

12.31.2016	As previously stated	Adjustments	Restated
STATEMENTS OF FINANCIAL POSITION
Assets	30,434,209	(145,309)	30,288,900
Current assets	4,402,990	(165,749)	4,237,241
Bonds and securities	302,398	(165,749)	136,649
Noncurrent assets	26,031,219	20,440	26,051,659
Deferred income tax and social contribution	803,477	10,878	814,355
Investments	2,334,950	9,562	2,344,512
Liabilities	30,434,209	(145,309)	30,288,900
Noncurrent liabilities	9,622,727	31,995	9,654,722
Provisions for legal claims	1,241,343	31,995	1,273,338
Equity	15,155,446	(177,304)	14,978,142
Attributable to controlling shareholder's	14,864,165	(146,067)	14,718,098
Profit retention reserve	5,162,983	(146,067)	5,016,916
Attributable to non-controlling interest	291,281	(31,237)	260,044
STATEMENTS OF INCOME
Operational expenses / income	(823,536)	(55,284)	(878,820)
Equity in earnings of investees	221,695	(55,284)	166,411
Profit before financial results and taxes	2,044,102	(55,284)	1,988,818
Financial results	(565,744)	(28,912)	(594,656)
Financial income	896,553	7,383	903,936
Financial expenses	(1,462,297)	(36,295)	(1,498,592)
Operating profit	1,478,358	(84,196)	1,394,162
Income tax and social contribution	(530,568)	10,878	(519,690)
Deferred income tax and social contribution	58,754	10,878	69,632
Net income	947,790	(73,318)	874,472
Attributed to controlling shareholders	958,650	(62,878)	895,772
Attributed to non-controlling interest	(10,860)	(10,440)	(21,300)
STATEMENTS OF COMPREHENSIVE INCOME
Total comprehensive income, net of taxes	(57,201)	-	(57,201)
Comprehensive income	890,589	(73,318)	817,271
Attributed to controlling shareholders	901,384	(62,878)	838,506
Attributed to non-controlling interest	(10,795)	(10,440)	(21,235)
STATEMENTS OF CHANGES IN EQUITY
Net income	947,790	(73,318)	874,472
Equity	15,155,446	(177,304)	14,978,142
STATEMENTS OF CASH FLOWS
Cash flows from operational activities	1,476,818	-	1,476,818
Net income	947,790	(73,318)	874,472
Unrealized monetary and exchange variations - net	1,142,316	28,912	1,171,228
Deferred income tax and social contribution	(58,754)	(10,878)	(69,632)
Equity in earnings of investees	(221,695)	55,284	(166,411)
Cash flows from investment activities	(2,511,075)	-	(2,511,075)
Cash flows from financing activities	535,603	-	535,603
Change in cash and cash equivalents	(498,654)	-	(498,654)
Basic and diluted earnings per share attributable to
shareholders of parent company:
Common shares	3.34587	(0.21946)	3.12641
Class “A” preferred shares	3.68045	(0.24139)	3.43906
Class “B” preferred shares	3.68045	(0.24139)	3.43906

12.31.2015	As previously stated	Adjustments	Restated
STATEMENTS OF FINANCIAL POSITION
Assets	28,947,657	(103,986)	28,843,671
Current assets	6,933,397	(111,760)	6,821,637
Bonds and securities	406,274	(111,760)	294,514
Noncurrent assets	22,014,260	7,774	22,022,034
Investments	2,224,710	7,774	2,232,484
Liabilities	28,947,657	(103,986)	28,843,671
Equity	14,584,478	(103,986)	14,480,492
Attributable to controlling shareholder's	14,245,728	(83,189)	14,162,539
Profit retention reserve	5,413,572	(83,189)	5,330,383
Attributable to non-controlling interest	338,750	(20,797)	317,953
STATEMENTS OF INCOME
Operational expenses / income	(1,020,077)	(4,955)	(1,025,032)
Equity in earnings of investees	92,545	(4,955)	87,590
Profit before financial results and taxes	2,126,451	(4,955)	2,121,496
Financial results	(328,671)	(99,031)	(427,702)
Financial expenses	(1,098,298)	(99,031)	(1,197,329)
Operating profit	1,797,780	(103,986)	1,693,794
Net income	1,265,551	(103,986)	1,161,565
Attributed to controlling shareholders	1,192,738	(83,189)	1,109,549
Attributed to non-controlling interest	72,813	(20,797)	52,016
STATEMENTS OF COMPREHENSIVE INCOME
Total comprehensive income, net of taxes	291,344	-	291,344
Comprehensive income	1,556,895	(103,986)	1,452,909
Attributed to controlling shareholders	1,483,587	(83,189)	1,400,398
Attributed to non-controlling interest	73,308	(20,797)	52,511
STATEMENTS OF CHANGES IN EQUITY
Net income	1,265,551	(103,986)	1,161,565
Equity	14,584,478	(103,986)	14,480,492
STATEMENTS OF CASH FLOWS
Cash flows from operational activities	1,320,728	-	1,320,728
Net income	1,265,551	(103,986)	1,161,565
Unrealized monetary and exchange variations - net	617,197	99,031	716,228
Equity in earnings of investees	(92,545)	4,955	(87,590)
Cash flows from investment activities	(1,951,618)	-	(1,951,618)
Cash flows from financing activities	1,371,486	-	1,371,486
Change in cash and cash equivalents	740,596	-	740,596
Basic and diluted earnings per share attributable to
shareholders of parent company:
Common shares	4.16287	(0.29034)	3.87253
Class “A” preferred shares	4.57807	(0.31817)	4.25990
Class “B” preferred shares	4.56917	(0.30938)	4.25979

Effect of new accounting standards

Financial instrument	Actual classification (IAS 39)	New classification IFRS 9
Bonds and securities	Available for sale	Fair value through profit or loss
Collaterals and escrow accounts	Loans and receivables	Amortized cost
Trade accounts receivable	Loans and receivables	Amortized cost
CRC transferred to the State Government of Paraná	Loans and receivables	Amortized cost
Sectorial financial assets	Loans and receivables	Amortized cost
Accounts receivable related to the concession - transmission (amortizable)	Loans and receivables	Amortized cost
Accounts receivable related to the concession - transmission (indemnable)	Loans and receivables	Fair value through profit or loss
Accounts receivable related to the concession - bonus from the grant	Loans and receivables	Amortized cost
Accounts receivable related to the concession - distribution	Available for sale	Fair value through profit or loss
Accounts receivable related to the concession compensation	Available for sale	Fair value through profit or loss
State of Paraná - Government Programs	Loans and receivables	Amortized cost
Other temporary investments	Available for sale	Fair value through profit or loss

XML

5. Cash and Cash Equivalents (Tables)

12 Months Ended

Dec. 31, 2017

Cash And Cash Equivalents Tables

Cash and Cash Equivalents

	12.31.2017	12.31.2016
Cash and bank accounts	157,470	173,020
Financial investments with immediate liquidity	882,605	809,053
	1,040,075	982,073

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6. Bonds and Securities (Tables)

12 Months Ended

Dec. 31, 2017

Bonds And Securities Tables

Bonds and Securities

Category	Index	12.31.2017	12.31.2016 Restated	12.31.2015 Restated
Securities available for sale
Quotas in Funds	CDI	107,560	94,268	64,473
Bank Deposit Certificates - CDB	95.0% to 101% of CDI	57,192	50,811	45,996
Committed Operation	96.5% to 100% of CDI	47,052	56,512	48,085
Financial Treasury Bonds - LFT	Selic	687	1,475	2,623
		212,491	203,066	161,177
Securities held for trading
Quotas in Funds	98.1% of CDI	7,172	8,676	100,282
Committed Operation	Fixed rate	-	58,930	88,594
Financial Notes	105.38% of CDI	-	51,384	26,025
Time Deposits with Special Guarantee from the Credit Guarantee Fund (FGC) - DPGE	106.25% of CDI	-	4,785	4,515
National Treasury Bonds - LTN	Selic	-	3,378	2,563
Housing credit	-	-	1,390	2,316
Debentures	105.11% of CDI	-	129	157
Treasury	-	-	7	2
		7,172	128,679	224,454
		219,663	331,745	385,631
	Current	1,341	136,649	294,514
	Noncurrent	218,322	195,096	91,117
Interbank Deposit Certificate - CDI
Interest rate equivalent to the reference rate of the Special System for Settlement and Custody - Selic

XML

7. Trade Accounts Receivables (Tables)

12 Months Ended

Dec. 31, 2017

Trade Accounts Receivables Tables

Trade Accounts Receivable

	Balances	Overdue	Overdue for	Total	Total
	falling due	up to 90 days	more than 90 days	12.31.2017	12.31.2016
Customers
Residential	308,315	190,376	14,126	512,817	447,345
Industrial	314,817	37,788	76,722	429,327	313,963
Commercial	257,733	56,316	26,533	340,582	267,647
Rural	55,626	19,965	4,940	80,531	68,611
Public Entities	40,358	9,476	5,992	55,826	64,581
Public lighting	37,590	81	13	37,684	28,991
Public service	37,667	1,279	834	39,780	34,391
Unbilled	410,086	-	-	410,086	377,498
Energy installments plan (7.1)	143,720	13,722	32,819	190,261	193,426
Low income subsidy - Eletrobras	14,435	-	-	14,435	12,128
Other receivables	74,762	16,442	66,407	157,611	159,051
	1,695,109	345,445	228,386	2,268,940	1,967,632
Concessionaires and  Permission holder
Energy supplies
Energy purchase agreements in the regulated market - CCEAR	69,413	694	6,406	76,513	116,516
Bilateral contracts	184,793	3,027	7,690	195,510	102,570
CCEE (7.2)	260,981	-	181,560	442,541	354,662
Unbilled	31,671	-	-	31,671	28,873
Quota system and Reimbursement to generators	10,020	49	1,282	11,351	17,415
	556,878	3,770	196,938	757,586	620,036
Charges from using transmission grid	151,204	3,120	7,696	162,020	104,831
Telecommunications	31,069	12,344	22,356	65,769	81,374
Gas distribution	37,195	2,037	10,605	49,837	69,934
Allowance for doubtful accounts (7.3)	(2,984)	(2,945)	(303,901)	(309,830)	(355,666)
	2,468,471	363,771	162,080	2,994,322	2,488,141
Current				2,733,240	2,217,355
Noncurrent				261,082	270,786

Allowance for Doubtful Accounts

	Balance as of		Reversal	Balance as of	Additions /	Reversal	Balance as of
	January 1, 2016	Additions	of write offs	December 31, 2016	(reversals)	of write offs	December 31, 2017
Customers
Residential	104,167	69,041	(106,706)	66,502	36,177	(80,147)	22,532
Industrial	42,176	45,552	(21,165)	66,563	26,265	(14,049)	78,779
Commercial	48,385	49,664	(30,974)	67,075	18,101	(25,901)	59,275
Rural	1,827	4,106	(2,803)	3,130	2,997	(3,396)	2,731
Public Entities	10,651	2,424	(94)	12,981	(3,833)	(4,313)	4,835
Public lighting	81	23	-	104	205	(269)	40
Public service	607	504	-	1,111	(653)	(439)	19
	207,894	171,314	(161,742)	217,466	79,259	(128,514)	168,211
Concessionaires and permission holder
CCEE (7.2)	119,665	-	-	119,665	-	-	119,665
concessionaires and permission holder	10,141	3,266	(330)	13,077	1,287	(175)	14,189
	129,806	3,266	(330)	132,742	1,287	(175)	133,854
Telecommunications	191	2,598	(2,255)	534	8,309	(7,332)	1,511
Gas distribution	1,795	3,209	(80)	4,924	1,433	(103)	6,254
	339,686	180,387	(164,407)	355,666	90,288	(136,124)	309,830

XML

8. CRC Transferred to the State Government of Paraná (Tables)

12 Months Ended

Dec. 31, 2017

Crc Transferred To State Government Of Paran Tables

Changes in CRC

Balance as of		Monetary		Balance as of		Monetary		Balance as of
January 1, 2016	Interest	variations	Amortizations	December 31, 2016	Interest	variations	Amortizations	December 31, 2017
1,383,242	92,959	95,959	(49,425)	1,522,735	97,085	(6,373)	(97,085)	1,516,362
Current				-				167,109
Noncurrent				1,522,735				1,349,253

Maturity of Noncurrent Installments

2019	178,223
2020	190,076
2021	202,717
2022	216,198
2023	230,576
After 2023	331,463
	1,349,253

XML

9. Net Sectorial Financial Assets and Liabilities (Tables)

12 Months Ended

Dec. 31, 2017

Net Sectorial Financial Assets And Liabilities Tables

Net Sectorial Financial Assets and Liabilities

		12.31.2017
	Current	Noncurrent
Sectorial financial assets - Electricity rate adjustment recoverable 2018
Portion A
Electricity purchased for resale - CVA Energ	333,412	333,412
Electricity purchased for resale - Itaipu	250,851	250,851
Transport of energy using the transmission system - basic grid	18,056	18,056
Transport of energy purchased from Itaipu	5,063	5,063
System Service Charges - ESS	(211,735)	(211,735)
Energy Development Account - CDE	(28,800)	(28,800)
Proinfa	(33)	(33)
Other financial components
Neutrality	33,319	33,319
Overcontracting	(112,137)	(112,137)
Hydrological risk	(93,964)	(93,964)
Tariff refunds	(21,302)	(21,302)
CVA Angra III Adjustment	(1,121)	(1,121)
	171,609	171,609

		12.31.2017		12.31.2016
	Current	Noncurrent	Current	Noncurrent
Sectorial financial liabilities - Electricity rate adjustment recoverable 2016
Portion A
Electricity purchased for resale - CVA Energ	-	-	(318,905)	-
ESS	-	-	(65,712)	-
Transport of energy using the transmission system - basic grid	-	-	(67)	-
Electricity purchased for resale - Itaipu	-	-	354,651	-
CDE	-	-	146,005	-
Proinfa	-	-	15,179	-
Transport of energy purchased from Itaipu	-	-	3,759	-
Other financial components
Extraordinary Tariff Review	-	-	(257,353)	-
Financial exposure	-	-	(16,250)	-
Overcontracting	-	-	(4,794)	-
Neutrality	-	-	40,564	-
Other	-	-	149	-
	-	-	(102,774)	-
Sectorial financial liabilities - Electricity rate adjustment recoverable 2017
Portion A
Electricity purchased for resale - CVA Energ	(168,939)	-	(108,610)	(108,610)
ESS	(167,938)	-	(103,853)	(103,853)
CDE	(84,293)	-	(37,697)	(37,697)
Proinfa	(5,122)	-	1,057	1,057
Electricity purchased for resale - Itaipu	36,002	-	34,717	34,717
Transport of energy using the transmission system - basic grid	11,127	-	4,239	4,239
Transport of energy purchased from Itaipu	2,797	-	1,972	1,972
Other financial components
Tariff refunds	(12,470)	-	-	-
Overcontracting	87,949	-	80,482	80,482
Neutrality	54,609	-	75,206	75,206
CVA Angra III Adjustment	50,435	-	-	-
Other	3,024	-	-	-
	(192,819)	-	(52,487)	(52,487)
Sectorial financial liabilities - Tariff Review 2021
Financial components
Tariff refunds	-	(90,700)	-	(71,244)
	-	(90,700)	-	(71,244)
	(192,819)	(90,700)	(155,261)	(123,731)

Changes in Net Sectorial Financial Assets and Liabilities

	Balance as of January 1, 2017	Operating revenues		Financial results	Rate Flags	Balance as of December 31, 2017
		Constitution	Amortization	Updating
Portion A
Electricity purchased for resale - Itaipu (9.2.1)	424,085	495,889	(420,054)	37,784	-	537,704
Electricity purchased for resale - CVA Energ (9.2.2)	(536,125)	937,324	517,751	(1,845)	(419,220)	497,885
Transport of energy using the transmission system - basic grid	8,411	50,426	(12,275)	677	-	47,239
Transport of energy purchased from Itaipu	7,703	11,067	(7,155)	1,308	-	12,923
ESS (9.2.3)	(273,418)	(529,932)	262,568	(50,626)	-	(591,408)
CDE (9.2.4)	70,611	(158,514)	(60,149)	6,159	-	(141,893)
Proinfa	17,293	(14,677)	(10,423)	2,619	-	(5,188)
Other financial components
Neutrality (9.2.5)	190,976	28,694	(99,593)	1,170	-	121,247
CVA Angra III Adjustment	-	97,426	(54,516)	5,283	-	48,193
Hydrological risk (9.2.6)	-	(183,728)	-	(4,200)	-	(187,928)
Tariff refunds (9.2.7)	(71,244)	(78,254)	13,479	(9,755)	-	(145,774)
Overcontracting (9.2.8)	156,170	(203,797)	(90,272)	1,574	-	(136,325)
Extraordinary Tariff Review	(257,353)	-	257,353	-	-	-
Financial exposure	(16,250)	-	16,250	-	-	-
Others	149	5,570	(3,418)	723	-	3,024
	(278,992)	457,494	309,546	(9,129)	(419,220)	59,699
Current assets	-					171,609
Noncurrent assets	-					171,609
Current liabilities	(155,261)					(192,819)
Noncurrent liabilities	(123,731)					(90,700)
	Balance as of January 1, 2016	Operating revenues		Financial results		Balance as of December 31, 2016
		Constitution	Amortization	Updating	Rate Flags
Portion A
Electricity purchased for resale - Itaipu (9.2.1)	699,408	61,905	(409,894)	72,666	-	424,085
Electricity purchased for resale - CVA Energ (9.2.2)	(14,865)	(255,085)	(37,860)	(39,710)	(188,605)	(536,125)
Transport of energy using the transmission system - basic grid	77,011	(271)	(74,168)	5,839	-	8,411
Transport of energy purchased from Itaipu	7,723	6,340	(7,388)	1,028	-	7,703
ESS (9.2.3)	(339,154)	(124,737)	292,804	(32,157)	(70,174)	(273,418)
CDE (9.2.4)	633,112	(249,476)	(350,600)	37,575	-	70,611
Proinfa	(1,265)	32,382	(16,271)	2,447	-	17,293
Other financial components
Neutrality (9.2.5)	64,644	154,607	(35,958)	7,683	-	190,976
Tariff refunds (9.2.7)	-	(66,043)	-	(5,201)	-	(71,244)
Overcontracting (9.2.8)	120,776	115,791	(73,595)	(6,802)	-	156,170
Extraordinary Tariff Review	(708,609)	21,541	457,942	(28,227)	-	(257,353)
Financial exposure	18,714	(42,000)	7,643	(607)	-	(16,250)
Deferral IRT	467,627	-	(467,627)	-	-	-
Preliminary injunctions CDE	20,456	(19,808)	-	(648)	-	-
Others	84	409	(245)	(99)	-	149
	1,045,662	(364,445)	(715,217)	13,787	(258,779)	(278,992)
Current assets	910,759					-
Noncurrent assets	134,903					-
Current liabilities	-					(155,261)
Noncurrent liabilities	-					(123,731)

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10. Accounts Receivable Related to the Concession (Tables)

12 Months Ended

Dec. 31, 2017

Accounts Receivable Related To Concession Tables

Accounts Receivable Related to the Concession

	12.31.2017	12.31.2016
Distribution concession agreement (10.1)	684,206	614,806
Bonus from the grant of concession agreements under the quota system (10.2)	606,479	586,706
Transmission concession agreements (10.3)	1,497,399	1,342,055
Remeasurement of RBSE financial assets (10.4)	1,418,370	1,186,985
Concession agreement - gas distribution (10.5)	303,668	83,378
	4,510,122	3,813,930
Current	149,744	65,595
Noncurrent	4,360,378	3,748,335

Distribution Concession Agreement

Balance as of January 1, 2016	424,140
Transfers from intangible assets (Note 20.1)	58,970
Transfers from investments	12
Fair value recognition	131,738
Loss on disposal	(54)
Balance as of December 31, 2016	614,806
Donations and grants received	76
Transfers from intangible assets (Note 20.1)	56,853
Transfers to other receivables (assets held for disposal)	(3,711)
Fair value recognition	16,199
Loss on disposal	(17)
Balance as of December 31, 2017	684,206

Bonus from the Grant of Concession Agreements

	Total
Balance as of January 1, 2016	-
Bonus from the grant recognition	574,827
Transfers to electricity grid use charges - customers	(84,904)
Interest (Note 32.2)	96,783
Balance as of December 31, 2016	586,706
Transfers to electricity grid use charges - customers	(62,387)
Interest (Note 32.2)	82,160
Balance as of December 31, 2017	606,479

Transmission Concession Agreement

Balance as of January 1, 2016	929,835
Transfers to electricity grid use charges - customers	(53,851)
Transfers to property, plant and equipment	(5,066)
Transfers to intangible	(150)
Transfers from recognition of RBSE appraisal report adjustment (10.4)	(61,760)
Remuneration	98,780
Reversal of estimated losses	29,025
Construction income	405,242
Balance as of December 31, 2016	1,342,055
Transfers to electricity grid use charges - customers	(81,497)
Transfers to property, plant and equipment	(29,264)
Remuneration	129,769
Construction income	136,336
Balance as of December 31, 2017	1,497,399

Remeasurement of RBSE Financial Assets

Balance as of January 1, 2016	-
Gain on remeasurement of the cash flow from the RBSE assets (Note 32.3)	809,639
Transfer from accounts receivable related to the concession compensation (Note 11)	160,217
Transfers from property, plant and equipment	155,369
Transfers from recognition of RBSE appraisal report adjustment (10.3)	61,760
Balance as of December 31, 2016	1,186,985
Gain on the cash flow from the RBSE assets (Note 32.3)	178,141
Increase in the estimated amount due to the approval of the report on RBSE assets (Note 32.3)	183,015
Transfers to electricity grid use charges - customers	(129,771)
Balance as of December 31, 2017	1,418,370

Concession Agreement - Gas Distribution

Balance as of January 1, 2016	13,638
Transfer from intangible assets	68,737
Fair value recognition	1,003
Balance as of December 31, 2016	83,378
Reclassified from intangible assets (2.1.1)	154,800
Transfer from intangible assets	24,609
Fair value recognition	40,881
Balance as of December 31, 2017	303,668

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11. Accounts Receivable Related to the Concession Compensation (Tables)

12 Months Ended

Dec. 31, 2017

Accounts Receivable Related To Concession Compensation Tables

Changes in Accounts Receivable Related to Concession Compensation

Balance as of January 1, 2016	219,556
Transfer to accounts receivable related to the concession (Note 10.4)	(160,217)
Gain on remeasurement of the cash flow	8,137
(-) Impairment	(75)
Balance as of December 31, 2016	67,401
Gain on remeasurement of the cash flow	341
Reversal of impairment	1,117
Balance as of December 31, 2017	68,859

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12. Other Receivables (Tables)

12 Months Ended

Dec. 31, 2017

Other Receivables Tables

Other Receivables

	12.31.2017	12.31.2016
Services in progress (a)	141,959	136,085
CDE Transfer (12.1)	136,559	45,929
Credits on sales and purchases of gas (12.2)	77,279	28,313
Decommissioning in progress	44,451	43,602
Advance payments to suppliers (b)	29,016	16,493
Advance payments to employees	25,928	25,916
Advance for severance estate	19,230	11,050
Other receivables	84,345	73,096
	558,767	380,484
Current	409,351	306,933
Noncurrent	149,416	73,551
(a) This item refers to services currently in progress within the Company, most of which are related to the Research and Development
and Energy Efficiency programs, which upon conclusion are offset against the respective liability recorded for this purpose.
(b) Advances to suppliers provided on contractual clauses.

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13. Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Taxes Tables

Income Tax and Social Contribution

	12.31.2017	12.31.2016
Current assets
IR and CSLL paid in advance	937,663	765,150
IR and CSLL to be offset against liability	(435,978)	(576,198)
	501,685	188,952
Noncurrent assets
IR and CSLL paid in advance	176,480	169,967
	176,480	169,967
Current liabilities
IR and CSLL due	362,307	547,992
IR and CSLL to be offset against asset	(275,997)	(506,538)
	86,310	41,454

Changes in Deferred Income Tax and Social Contribution

	Balance as of January 1, 2016	Recognized in income	Recognized in other comprehensive income	Balance as of December 31, 2016 Restated	Recognized in income	Recognized in other comprehensive income	Balance as of December 31, 2017
Noncurrent assets
Provisions for legal claims	456,316	(17,778)	-	438,538	75,820	-	514,358
Post-employment benefits	201,260	28,634	30,174	260,068	16,716	16,827	293,611
Impairment of assets	252,026	37,591	-	289,617	20,944	-	310,561
Research and development and energy efficiency programs	116,671	25,608	-	142,279	14,046	-	156,325
Provision for energy purchases	184,471	(69,214)	-	115,257	14,620	-	129,877
Allowance for doubtful accounts	125,941	3,697	-	129,638	(16,258)	-	113,380
Tax losses and negative tax basis	6,050	45,063	-	51,113	59,545	-	110,658
Social security contributions - injunction on judicial deposit	36,758	17,992	-	54,750	6,106	-	60,856
Amortization - concession	39,539	4,592	-	44,131	4,591	-	48,722
Concession contracts	38,009	(11,803)	-	26,206	(1,300)	-	24,906
Provision for tax losses	17,426	5,750	-	23,176	739	-	23,915
Provision for profit sharing	25,825	(4,494)	-	21,331	939	-	22,270
Financial instruments	6,316	6,607	-	12,923	2,795	-	15,718
Others	95,875	(4,538)	-	91,337	(33,878)	-	57,459
	1,602,483	67,707	30,174	1,700,364	165,425	16,827	1,882,616
(-) Noncurrent liabilities
Concession contracts	91,359	349,163	-	440,522	95,204	-	535,726
Deemed cost	539,190	(52,395)	-	486,795	(36,911)	-	449,884
Escrow deposits monetary variation	-	62,538	-	62,538	(7,210)	-	55,328
Transaction cost on borrowings and debentures	7,768	1,874	-	9,642	11,896	-	21,538
Deferment of capital gains	11,320	-	-	11,320	-	-	11,320
Capitalization of financial charges	5,357	-	-	5,357	-	-	5,357
Result from the change in the
investment valuation method	-	17,717	-	17,717	(17,717)	-	-
Others	410,141	(380,822)	1,229	30,548	14,906	(853)	44,601
	1,065,135	(1,925)	1,229	1,064,439	60,168	(853)	1,123,754
Net	537,348	69,632	28,945	635,925	105,257	17,680	758,862
Assets presented in the Statement of Financial Position	537,562			814,355			915,492
Liabilities presented in the Statement of Financial Position	(214)			(178,430)			(156,630)

Realization of Deferred Tax Credits

	Assets	Liabilities
2018	482,107	(82,039)
2019	268,072	(105,308)
2020	185,597	(71,167)
2021	115,637	(69,403)
2022	80,570	(70,448)
2023 to 2025	193,845	(189,305)
2026 to 2028	556,788	(536,084)
	1,882,616	(1,123,754)

Other Recoverable Taxes and Other Taxes Due

	12.31.2017	12.31.2016
Current assets
Recoverable ICMS (VAT)	68,773	62,934
Recoverable PIS/Pasep and Cofins taxes	133,090	52,240
PIS/Pasep and Cofins to be offset against liabilities	(4,202)	(47,810)
Other recoverable taxes	571	567
	198,232	67,931
Noncurrent assets
Recoverable ICMS (VAT)	36,740	35,659
PIS/Pasep and Cofins taxes	46,858	62,113
Other recoverable taxes	33,376	33,336
	116,974	131,108
Current liabilities
ICMS (VAT) payable	151,928	113,793
PIS/Pasep and Cofins payable	138,797	136,437
PIS/Pasep and Cofins to be offset against assets	(121,165)	(87,629)
IRRF on JSCP	97,065	90,147
IRRF on JSCP to be offset against IR and CSLL assets	(43,018)	(29,841)
Special Tax Regularization Program - Pert (13.3.1)	45,108	-
Ordinary financing of taxes with the federal tax authorities	63,791	59,558
Other taxes	12,981	12,529
	345,487	294,994
Noncurrent liabilities
Social security contributions - injunction on judicial deposit	179,373	161,336
Pert (13.3.1)	488,563	-
Ordinary financing of taxes with the federal tax authorities	85,054	138,969
TCFRH (a)	53,349	-
Other taxes	3,237	2,841
	809,576	303,146
(a) Fee for Control, Monitoring and Inspection of Activities of Exploitation and Use of Water Resources

Debt balance after joining Pert

				Consolidated debt	Reduction of fine	Debt balance
Tax	Principal	Fine	Interest	before joining Pert  (1)	and interest  - Pert  (2)	(1) - (2)
PIS	29,432	5,886	8,612	43,930	7,866	36,064
Cofins	135,614	27,123	39,678	202,415	36,242	166,173
IRPJ	286,528	57,306	89,814	433,648	80,404	353,244
CSLL	105,791	21,158	33,159	160,108	29,685	130,423
	557,365	111,473	171,263	840,101	154,197	685,904

Tax credits

Tax	Principal	Interest	Total
PIS	40,379	6,716	47,095
Cofins	185,134	30,803	215,937
IRPJ	369,900	50,219	420,119
CSLL	164,996	23,310	188,306
	760,409	111,048	871,457

Reconciliation of Provision for Income Tax (IRPJ) and Social Contribution (CSLL)

	12.31.2017	12.31.2016 Restated	12.31.2015 Restated
Income before IRPJ and CSLL	1,392,941	1,394,162	1,693,794
IRPJ and CSLL (34%)	(473,600)	(474,015)	(575,890)
Tax effects on:
Equity in income	36,555	66,899	21,882
Interest on own capital	90,440	96,202	67,320
Dividends	497	838	572
Non deductible expenses	(26,292)	(11,624)	(13,706)
Tax incentives	14,973	16,567	18,757
Unrecognized income and social contribution tax loss carry-forwards	(5,645)	-	-
Setting up and/or offset of income tax and social contribution losses of prior years	90,804	-	(909)
Difference between the calculation bases of deemed profit and taxable profit	(19,680)	(114,149)	(15,302)
Others	17,262	(100,408)	(34,953)
Current IRPJ and CSLL	(379,943)	(589,322)	(698,023)
Deferred IRPJ and CSLL	105,257	69,632	165,794
Effective rate - %	19.7%	37.3%	31.4%

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14. Prepaid Expenses (Tables)

12 Months Ended

Dec. 31, 2017

Prepaid Expenses Tables

Prepaid Expenses

	12.31.2017	12.31.2016
Risk premium - GSF renegotiation (14.1)	28,033	40,909
Others	24,518	23,770
	52,551	64,679
Current	39,867	39,096
Noncurrent	12,684	25,583

Recovery of Power Purchase Cost through Renegotiation

Power Plant	Physical guarantee (Average MW )	Eligible amount of energy (Average MW )	Amortization period of prepaid expenses	Grant extension period (intangible asset)	Asset value to recover as renegotiation of  GSF	Value of prepaid expenses to amortize with future risk premium	Value of intangible assets amortization over the concession period
Mauá	100.827	97.391	01.01.2016 to 06.30.2020	not applicable	28,623	28,623	-
Foz do Areia	576.000	226.705	01.01.2016 to 12.31.2016	05.24.2023 to 09.17.2023	66,628	17,222	49,406
Santa Clara and Fundão	135.400	134.323	01.01.2016 to 04.22.2019	10.25.2036 to 05.28.2037	39,369	30,326	9,043
		458.419			134,620	76,171	58,449

CCEE liabilities

	Balance as of  January 1, 2016	Amortization	Transfers	Balance as of  December 31, 2016	Amortization	Transfers	Balance as of December 31, 2017
Risk premium - current asset	23,313	(32,679)	24,825	15,459	(12,876)	12,876	15,459
Risk premium - noncurrent asset	25,340	-	110	25,450	-	(12,876)	12,574
Intangible	30,807	(4,493)	26,872	53,186	(7,441)	-	45,745
Liability deduction with CCEE	55,160	(3,353)	(51,807)	-	-	-	-
	134,620	(40,525)	-	94,095	(20,317)	-	73,778
Risk premium to be amortized - prepaid expenses	76,171			40,909			28,033
Grant extension period - intangible	58,449			53,186			45,745

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15. Receivable from Related Parties (Tables)

12 Months Ended

Dec. 31, 2017

Receivable From Related Parties Tables

Receivable from Related Parties

	12.31.2017	12.31.2016
Controlling shareholders
State of Paraná (15.1)	130,417	155,141
Joint Ventures
Voltalia São Miguel do Gostoso (15.2)	38,169	28,968
Structure sharing	405	-
	168,991	184,109
Current	38,835	28,968
Noncurrent	130,156	155,141

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16. Other Temporary Investments (Tables)

12 Months Ended

Dec. 31, 2017

Other Temporary Investments Tables

Other Temporary Investments

				Stock exchange		Stock exchange
		Shares		quotation		quotation
Investment	Investor	(quantity)	Type	per share (R$)	12.31.2017	per share (R$)	12.31.2016
Companhia de Saneamento do Paraná - Sanepar (16.1)	Copel	36,343,267	Preferred	-	-	10.75	390,690
Other investments	Copel				18,727		17,607
					18,727		408,297

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17. Judicial Deposits (Tables)

12 Months Ended

Dec. 31, 2017

Judicial Deposits Tables

Judicial Deposits

	12.31.2017	12.31.2016
Taxes claims	337,909	433,880
Labor claims	120,463	149,968
.
Civil
Suppliers	-	7,680
Civil	110,495	51,482
Easements	6,114	6,679
Customers	2,522	3,197
	119,131	69,038
.
Others	5,026	4,717
	582,529	657,603

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18. Investments (Tables)

12 Months Ended

Dec. 31, 2017

Investments Tables

Changes in Investments

	Balance as of January 1, 2017 Restated	Equity	Investment/ Advance for future capital increase	Amorti- zation	Proposed dividends and JCP	Other (a)	Balance as of December 31, 2017
Joint Ventures (18.3)
Dominó Holdings (18.4)	81,526	(568)	-	-	(5,144)	(75,814)	-
Voltalia São Miguel do Gostoso I	75,563	(565)	-	-	-	-	74,998
Voltalia São Miguel do Gostoso - authorization rights	11,140	-	-	(367)	-	-	10,773
Paraná Gás	37	(34)	-	-	-	-	3
Costa Oeste	37,232	(2,566)	-	-	(1,020)	-	33,646
Marumbi	94,878	(9,537)	-	-	-	-	85,341
Transmissora Sul Brasileira	69,369	(5,009)	-	-	-	-	64,360
Caiuá	60,057	(4,020)	-	-	-	-	56,037
Integração Maranhense	122,253	(8,852)	-	-	-	-	113,401
Matrinchã	792,069	57,376	-	-	(13,626)	-	835,819
Guaraciaba	398,969	25,377	-	-	(6,026)	-	418,320
Paranaíba	147,213	17,020	2,082	-	(4,042)	-	162,273
Mata de Santa Genebra	232,240	19,477	210,920	-	(3,263)	-	459,374
Cantareira	161,855	3,879	35,205	-	(921)	-	200,018
	2,284,401	91,978	248,207	(367)	(34,042)	(75,814)	2,514,363
Associates
Dona Francisca Energética (18.5)	32,766	8,876	-	-	(11,821)	-	29,821
Foz do Chopim Energética (18.5)	13,967	6,645	-	-	(7,528)	-	13,084
Dominó Holdings	-	4	-	-	-	2,453	2,457
Other	12,016	(5,764)	36	2,872	-	396	9,556
	58,749	9,761	36	2,872	(19,349)	2,849	54,918
Investment property	1,362	-	-	-	-	-	1,362
	2,344,512	101,739	248,243	2,505	(53,391)	(72,965)	2,570,643
(a) Of the total amount of R$75,814, R$73,361 refers to capital decrease and R$2,453 refers to the change in the investment of a Joint venture to an Associate.

	Balance as of January 1, 2016 Restated	Equity	Equity valuation adjustments	Investment Advance for future capital increase	Amorti- zation	Proposed dividends and JCP	Other	Balance as of December 31, 2016
Joint Ventures (18.3)
Dominó Holdings (a)	242,652	37,492	(375)	-	-	(123,260)	(74,983)	81,526
Voltalia São Miguel do Gostoso I	72,249	4,345	-	-	-	(1,031)	-	75,563
Voltalia São Miguel do Gostoso - authorization rights	11,507	-	-	-	(367)	-	-	11,140
Paraná Gás	106	(69)	-	-	-	-	-	37
Costa Oeste	32,631	7,372	-	-	-	(2,771)	-	37,232
Marumbi	75,914	16,188	-	3,520	-	(744)	-	94,878
Transmissora Sul Brasileira	67,563	1,806	-	-	-	-	-	69,369
Caiuá	51,271	8,143	-	-	-	643	-	60,057
Integração Maranhense	104,286	15,934	-	1,569	-	464	-	122,253
Matrinchã	697,912	41,910	-	67,345	-	(15,098)	-	792,069
Guaraciaba	298,794	11,194	-	90,564	-	(1,583)	-	398,969
Paranaíba	100,726	12,847	-	36,691	-	(3,051)	-	147,213
Mata de Santa Genebra	26,903	(2,578)	-	207,915	-	-	-	232,240
Cantareira	60,105	5,155	-	97,431	-	(836)	-	161,855
	1,842,619	159,739	(375)	505,035	(367)	(147,267)	(74,983)	2,284,401
Associates
Sanepar (b)	311,679	43,120	(479)	-	-	(19,372)	(334,948)	-
Dona Francisca Energética (18.5)	32,234	7,901	-	-	-	(7,369)	-	32,766
Foz do Chopim Energética (18.5)	15,574	10,675	-	-	-	(12,282)	-	13,967
Other	9,905	(55,024)	-	57,135	-	-	-	12,016
	369,392	6,672	(479)	57,135	-	(39,023)	(334,948)	58,749
Other investments	20,473	-	570	-	-	-	(19,681)	1,362
	2,232,484	166,411	(284)	562,170	(367)	(186,290)	(429,612)	2,344,512
(a) The amount of (R$74,983) refers to the capital reduction of the investee.
(b) Transfer to Other temporary investments at 11.24.2016

	Balance as of January 1, 2015	Equity	Equity valuation adjustments	Investment/ Advance for future capital increase	Proposed dividends and JCP	Amortization	Balance as of December 31, 2015 Restated
Joint Ventures
Dominó Holdings	225,334	24,767	8,625	-	(16,074)	-	242,652
Voltalia São Miguel do Gostoso I	52,421	(99)	-	20,055	(128)	-	72,249
Voltalia São Miguel do Gostoso - authorization rights	11,693	-	-	-	-	(186)	11,507
Paraná Gás	-	(8)	-	114	-	-	106
Costa Oeste	23,924	7,506	-	2,983	(1,782)	-	32,631
Marumbi	63,747	13,056	-	2,211	(3,100)	-	75,914
Transmissora Sul Brasileira	73,291	(6,393)	-	665	-	-	67,563
Caiuá	44,761	8,579	-	-	(2,069)	-	51,271
Integração Maranhense	91,835	14,348	-	2,352	(4,249)	-	104,286
Matrinchã	443,262	327	-	254,323	-	-	697,912
Guaraciaba	145,979	(17,136)	-	169,951	-	-	298,794
Paranaíba	68,308	3,018	-	29,400	-	-	100,726
Mata de Santa Genebra	26,151	(2,004)	-	2,756	-	-	26,903
Cantareira	15,273	1,550	-	43,650	(368)	-	60,105
	1,285,979	47,511	8,625	528,460	(27,770)	(186)	1,842,619
Associates
Sanepar	282,311	34,720	11,035	-	(16,387)	-	311,679
Dona Francisca Energética	53,908	(1,077)	-	-	(20,597)	-	32,234
Foz do Chopim Energética	14,907	11,996	-	-	(11,329)	-	15,574
Other	2,567	(5,560)	-	12,898	-	-	9,905
	353,693	40,079	11,035	12,898	(48,313)	-	369,392
Other investments	20,478	-	(5)	-	-	-	20,473
	1,660,150	87,590	19,655	541,358	(76,083)	(186)	2,232,484

Subsidiaries with Non-Controlling Interest Summarized Financial Information

	Compagás		Elejor		UEG Araucária
	12.31.2017	12.31.2016	12.31.2017	12.31.2016	12.31.2017	12.31.2016 Restated	01.01.2016 Restated
ASSETS	632,910	526,477	675,450	708,688	507,060	529,251	944,521
Current assets	151,966	135,292	77,216	76,231	99,101	162,814	563,018
Noncurrent assets	480,944	391,185	598,234	632,457	407,959	366,437	381,503
LIABILITIES	632,910	526,477	675,450	708,688	507,060	529,251	944,521
Current liabilities	147,743	180,133	164,574	142,222	38,386	62,253	173,420
Noncurrent liabilities	87,409	46,716	449,149	486,765	22,470	20,422	16,847
Equity	397,758	299,628	61,727	79,701	446,204	446,576	754,254
STATEMENT OF INCOME
Operating revenues	515,563	542,822	291,597	263,686	129,084	57,432	1,434,180
Operating costs and expenses	(309,213)	(534,817)	(93,230)	(96,321)	(121,883)	(259,324)	(1,120,473)
Financial results	(25,612)	(1,422)	(54,254)	(93,717)	5,302	18,499	(49,186)
Equity in income of subsidiaries	-	-	-	-	(5,777)	(55,284)	(4,955)
Income tax and social contribution	(66,785)	(1,632)	(47,893)	(24,525)	(7,098)	46,358	(120,692)
Net income (loss)	113,953	4,951	96,220	49,123	(372)	(192,319)	138,874
Other comprehensive income	(251)	132	-	-	-	-	-
Total comprehensive income	113,702	5,083	96,220	49,123	(372)	(192,319)	138,874
STATEMENTS OF CASH FLOWS
Cash flows from operational activities	83,661	32,714	143,911	104,136	(86,840)	65,203	374,658
Cash flows from investiment activities	(14,268)	(25,975)	(1,461)	(1,465)	118,460	21,587	7,904
Cash flows from financing activities	(20,623)	(751)	(143,028)	(105,843)	-	(200,000)	(252,670)
TOTAL EFFECTS ON CASH AND CASH EQUIVALENTS	48,770	5,988	(578)	(3,172)	31,620	(113,210)	129,892
Cash and cash equivalents at the beginning of the year	35,309	29,321	38,483	41,655	19,644	132,854	2,962
Cash and cash equivalents at the end of the year	84,079	35,309	37,905	38,483	51,264	19,644	132,854
CHANGE IN CASH AND CASH EQUIVALENTS	48,770	5,988	(578)	(3,172)	31,620	(113,210)	129,892

Changes in Equity Attributable to Non-Controlling Shareholders

Participation in capital stock	Compagás: 49%	Elejor: 30%	UEG Araucária: 20%	Consolidated
Balance as of January 1, 2015	136,233	25,445	190,413	352,091
Income for the year	11,304	12,937	27,775	52,016
Other comprehensive income	495	-	-	495
Dividends	(3,128)	(16,182)	(67,339)	(86,649)
Balance as of December 31, 2015- restated	144,904	22,200	150,849	317,953
Income (loss) for the year - restated	2,425	14,736	(38,461)	(21,300)
Other comprehensive income	65	-	-	65
Deliberation of additional dividends proposed	-	-	(23,072)	(23,072)
Distribution of dividends with retained earnings	-	(9,342)	-	(9,342)
Dividends	(576)	(3,684)	-	(4,260)
Balance as of December 31, 2016 - restated	146,818	23,910	89,316	260,044
Income (loss) for the year	55,837	28,866	(74)	84,629
Other comprehensive income	(123)	-	-	(123)
Deliberation of additional dividends proposed	-	(11,053)	-	(11,053)
Dividends	(7,631)	(23,205)	-	(30,836)
Balance as of December 31, 2017	194,901	18,518	89,242	302,661

Assets, Liabilities and Profit or Loss of the Main Joint Ventures

	Voltalia	Costa Oeste	Marumbi	Transmissora Sul Brasileira	Caiuá	Integração Maranhense	Matrinchã	Guaraciaba	Paranaíba	Mata de Santa Genebra	Cantareira
12.31.2017
.
ASSETS	155,272	99,028	162,155	659,464	230,743	466,783	2,774,973	1,428,247	1,698,213	1,722,063	952,670
Current assets	2,141	7,791	10,314	56,604	22,895	44,594	297,331	139,920	233,065	107,568	6,046
Cash and cash equivalents	3	2,685	1,949	25,547	1,626	2,224	116,256	34,364	29,066	96,244	5,169
Other current assets	2,138	5,106	8,365	31,057	21,269	42,370	181,075	105,556	203,999	11,324	877
Noncurrent assets	153,131	91,237	151,841	602,860	207,848	422,189	2,477,642	1,288,327	1,465,148	1,614,495	946,624
.
LIABILITIES	155,272	99,028	162,155	659,464	230,743	466,783	2,774,973	1,428,247	1,698,213	1,722,063	952,670
Current liabilities	2,214	3,817	6,386	220,845	23,608	71,563	140,515	71,818	124,764	12,630	9,706
Financial liabilities	-	3,124	5,220	212,618	7,427	13,240	48,686	32,627	53,317	-	-
Other current liabilities	2,214	693	1,166	8,227	16,181	58,323	91,829	39,191	71,447	12,630	9,706
Noncurrent liabilities	-	29,239	49,093	116,818	92,774	163,790	928,706	502,713	911,107	792,519	534,764
Financial liabilities	-	24,751	38,651	106,174	64,081	103,755	712,198	388,806	638,779	703,897	439,192
Other noncurrent liabilities	-	4,488	10,442	10,644	28,693	60,035	216,508	113,907	272,328	88,622	95,572
Equity	153,058	65,972	106,676	321,801	114,361	231,430	1,705,752	853,716	662,342	916,914	408,200
STATEMENT OF INCOME
Net operating income	-	11,837	19,498	53,374	(2,904)	(14,460)	403,891	208,444	320,302	588,123	392,766
Operating costs and expenses	(113)	(15,765)	(29,086)	(63,752)	(5,194)	(4,245)	(183,660)	(93,369)	(150,984)	(434,779)	(347,771)
Financial results	9	(1,841)	(3,140)	(26,994)	(6,017)	(9,070)	(47,331)	(36,981)	(59,132)	(94,512)	(35,207)
Equity in income of subsidiaries	(1,048)	-	-	-	-	-	-	-	-	-	-
Income tax and social contribution	-	737	807	12,330	5,908	9,709	(55,808)	(26,303)	(40,717)	(19,955)	(1,871)
Net income (loss)	(1,152)	(5,032)	(11,921)	(25,042)	(8,207)	(18,066)	117,092	51,791	69,469	38,877	7,917
Other comprehensive income	-	-	-	-	-	-	-	-	-	-	-
Total comprehensive income	(1,152)	(5,032)	(11,921)	(25,042)	(8,207)	(18,066)	117,092	51,791	69,469	38,877	7,917
Investment interest - %	49.0	51.0	80.0	20.0	49.0	49.0	49.0	49.0	24.5	50.1	49.0
Investment book value	74,998	33,646	85,341	64,360	56,037	113,401	835,819	418,320	162,273	459,374	200,018

	Dominó (a)	Voltalia	Costa Oeste	Marumbi	Transmissora Sul Brasileira	Caiuá	Integração Maranhense	Matrinchã	Guaraciaba	Paranaíba	Mata de Santa Genebra	Cantareira
12.31.2016
.
ASSETS	180,049	156,422	112,601	185,888	696,381	255,276	513,186	2,583,118	1,247,036	1,284,733	1,050,330	525,446
Current assets	24,725	2,177	9,892	12,614	51,963	26,820	49,355	273,185	107,429	41,648	59,160	1,242
Cash and cash equivalents	5,340	41	4,323	3,324	23,295	1,435	115	118,196	16,284	3,051	47,792	157
Other current assets	19,385	2,136	5,569	9,290	28,668	25,385	49,240	154,989	91,145	38,597	11,368	1,085
Noncurrent assets	155,324	154,245	102,709	173,274	644,418	228,456	463,831	2,309,933	1,139,607	1,243,085	991,170	524,204
.
LIABILITIES	180,049	156,422	112,601	185,888	696,381	255,276	513,186	2,583,118	1,247,036	1,284,733	1,050,330	525,446
Current liabilities	13,669	2,212	8,003	17,760	33,949	26,776	76,137	120,886	41,099	83,078	523,351	140,759
Financial liabilities	-	-	3,110	5,190	25,153	7,387	13,188	52,625	9,928	45,939	489,017	65,697
Other current liabilities	13,669	2,212	4,893	12,570	8,796	19,389	62,949	68,261	31,171	37,139	34,334	75,062
Noncurrent liabilities	-	-	31,594	49,531	315,589	105,934	187,554	845,764	391,712	600,784	63,427	54,373
Financial liabilities	-	-	27,426	43,171	308,859	70,633	115,732	747,709	378,528	561,700	-	-
Other noncurrent liabilities	-	-	4,168	6,360	6,730	35,301	71,822	98,055	13,184	39,084	63,427	54,373
Equity	166,380	154,210	73,004	118,597	346,843	122,566	249,495	1,616,468	814,225	600,871	463,552	330,314
.
STATEMENT OF INCOME
Net operating income	-	-	20,433	37,559	56,553	38,148	64,428	433,833	310,380	322,855	570,237	337,614
Operating costs and expenses	(969)	(122)	(3,341)	(11,906)	(12,042)	(4,008)	(2,851)	(237,779)	(204,412)	(185,789)	(497,852)	(321,966)
Financial results	(24,062)	5	(1,213)	(3,596)	(32,674)	(6,432)	(10,934)	(66,462)	(73,693)	(58,703)	(80,255)	225
Equity in income of subsidiaries	101,543	8,987	-	-	-	-	-	-	-	-	-	-
Income tax and social contribution	-	-	(1,426)	(1,822)	(2,810)	(11,355)	(18,125)	(44,061)	(9,429)	(25,924)	2,724	(5,354)
Net income	76,512	8,870	14,453	20,235	9,027	16,353	32,518	85,531	22,846	52,439	(5,146)	10,519
Other comprehensive income	(9,669)	-	-	-	-	-	-	-	-	-	-	-
Total comprehensive income	66,843	8,870	14,453	20,235	9,027	16,353	32,518	85,531	22,846	52,439	(5,146)	10,519
Investment interest - %	49.0	49.0	51.0	80.0	20.0	49.0	49.0	49.0	49.0	24.5	50.1	49.0
Investment book value	81,526	75,563	37,232	94,878	69,369	60,057	122,253	792,069	398,969	147,213	232,240	161,855
(a) Balances adjusted to accounting practices.

Assets, Liabilities and Profit or Loss of the Main Associates

	Dona Francisca		Foz do Chopim
	12.31.2017	12.31.2016	12.31.2017	12.31.2016
ASSETS	138,079	151,563	61,163	48,937
Current assets	10,304	19,311	21,553	11,043
Noncurrent assets	127,775	132,252	39,610	37,894
.
LIABILITIES	138,079	151,563	61,163	48,937
Current liabilities	4,144	5,306	1,808	2,336
Noncurrent liabilities	4,443	3,982	22,776	7,553
Equity	129,492	142,275	36,579	39,048
.
STATEMENT OF INCOME
Net operating income	70,716	70,208	40,441	40,762
Operating costs and expenses	(30,379)	(34,074)	(21,124)	(10,130)
Financial income (expense)	835	1,453	809	795
Income tax and social contribution	(2,632)	(3,275)	(1,547)	(1,580)
Net income	38,540	34,312	18,579	29,847
Other comprehensive income	-	-	-	-
Total comprehensive income	38,540	34,312	18,579	29,847
Investment interest - %	23.0303	23.0303	35.77	35.77
Investment book value	29,821	32,766	13,084	13,967

XML

19. Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2017

Property Plant And Equipment Tables

Property, Plant and Equipment

		Accumulated			Accumulated
	Cost	depreciation	12.31.2017	Cost	depreciation	12.31.2016
In service
Reservoirs, dams and aqueducts	6,638,348	(4,071,621)	2,566,727	6,595,895	(3,912,383)	2,683,512
Machinery and equipment	5,320,736	(2,654,801)	2,665,935	5,309,674	(2,645,702)	2,663,972
Buildings	1,500,144	(989,221)	510,923	1,498,841	(954,470)	544,371
Land	277,665	(15,287)	262,378	277,112	(12,351)	264,761
Vehicles and aircraft	59,101	(48,759)	10,342	60,914	(45,243)	15,671
Furniture and tools	16,990	(11,476)	5,514	16,771	(10,989)	5,782
(-) Provision for impairment (19.9)	(4,986)	-	(4,986)	(77,318)	-	(77,318)
(-) Special Obligations	(56)	18	(38)	(56)	10	(46)
	13,807,942	(7,791,147)	6,016,795	13,681,833	(7,581,128)	6,100,705
In progress
Cost	5,023,013	-	5,023,013	3,969,703	-	3,969,703
(-) Provision for impairment (19.9)	(1,210,358)	-	(1,210,358)	(1,136,105)	-	(1,136,105)
	3,812,655	-	3,812,655	2,833,598	-	2,833,598
	17,620,597	(7,791,147)	9,829,450	16,515,431	(7,581,128)	8,934,303

Changes in Property, Plant and Equipment

	Balance as of  January 1, 2017	Additions /  (Reversal) of   impairment	Depreciation	Loss on  disposal	Transfers	Balance as of  December 31, 2017
In service
Reservoirs, dams and aqueducts	2,683,512	-	(144,484)	(2,160)	29,859	2,566,727
Machinery and equipment	2,663,971	-	(188,988)	(37,685)	228,637	2,665,935
Buildings	544,372	-	(36,347)	(773)	3,671	510,923
Land	264,761	-	(2,935)	(3)	555	262,378
Vehicles and aircraft	15,671	-	(5,492)	(6)	169	10,342
Furniture and tools	5,782	-	(803)	(12)	547	5,514
(-) Provision for impairment (19.9)	(77,318)	72,332	-	-	-	(4,986)
(-) Special Obligations	(46)	-	8	-	-	(38)
	6,100,705	72,332	(379,041)	(40,639)	263,438	6,016,795
In progress
Cost	3,969,703	1,318,336	-	(23,869)	(241,157)	5,023,013
(-) Provision for impairment (19.9)	(1,136,105)	(74,253)	-	-	-	(1,210,358)
	2,833,598	1,244,083	-	(23,869)	(241,157)	3,812,655
	8,934,303	1,316,415	(379,041)	(64,508)	22,281	9,829,450
	Balance as of January 1, 2016	Additions	Depreciation	Loss on disposal	Transfers	Balance as of December 31, 2016
In service
Reservoirs, dams and aqueducts	2,830,290	-	(142,986)	(555)	(3,237)	2,683,512
Machinery and equipment	2,855,110	-	(185,254)	(11,143)	5,259	2,663,972
Buildings	581,554	-	(37,246)	(1,971)	2,034	544,371
Land	267,623	-	(2,935)	(7)	80	264,761
Vehicles and aircraft	20,205	-	(4,861)	(142)	469	15,671
Furniture and tools	6,236	-	(835)	(4)	385	5,782
(-) Provision for impairment (19.9)	(15,095)	(62,223)	-	-	-	(77,318)
(-) Special Obligations	(14)	-	8	-	(40)	(46)
	6,545,909	(62,223)	(374,109)	(13,822)	4,950	6,100,705
In progress
Cost	2,851,078	1,301,856	-	(13,580)	(169,651)	3,969,703
(-) Provision for impairment (19.9)	(704,305)	(431,800)	-	-	-	(1,136,105)
	2,146,773	870,056	-	(13,580)	(169,651)	2,833,598
	8,692,682	807,833	(374,109)	(27,402)	(164,701)	8,934,303

Average Depreciation Rates

Average rate of depreciation (%)	31.12.2017	31.12.2016
Generation
General equipment	6.33	6.31
Machinery and equipment	3.59	2.29
Generators	3.21	3.04
Reservoirs, dams and ducts	2.11	2.13
Hydraulic turbines	2.61	2.57
Gas and steam turbines	2.30	2.30
Water cooling and treatment	4.00	3.99
Gas conditioner	4.00	3.66
Wind power plant unit	3.85	3.85
Central management
Buildings	3.33	3.33
Machinery and office equipment	6.25	6.25
Furniture and fixtures	6.25	6.25
Vehicles	14.29	14.29
Telecommunications
Transmission equipment	6.36	6.90
Terminal equipment	12.09	13.41
Infrastructure	7.45	7.43

Joint Operations Property, Plant and Equipment

	Share	Annual average
Joint operations	Copel GeT (%)	depreciation rate  (%)	12.31.2017	12.31.2016
In service
HPP Mauá (Consórcio Energético Cruzeiro do Sul)	51.0		859,917	859,917
(-) Accumulated depreciation		3.43	(147,086)	(117,625)
			712,831	742,292
In progress
HPP Baixo Iguaçu (19.7.1)	30.0		640,178	390,420
			640,178	390,420
			1,353,009	1,132,712

Impairment balances

	Property, Plant and Equipment			Value in use
	Cost	Depreciation	Impairment
Projects
HPP Colíder (a)	2,217,391	(1,859)	(683,021)	1,532,511
Wind power complex Cutia (a)	1,083,474	-	(224,510)	858,964
Wind power complex Bento Miguel (a)	217,121	-	(98,231)	118,890
Consórcio Tapajós (b)	14,464	-	(14,464)	-
Power plants in Paraná (a)	864,761	(59,743)	(195,118)	609,900
	4,397,211	(61,602)	(1,215,344)	3,120,265
(a) Under construction
(b) Project under development

Impairment of Property, Plant and Equipment

	Balance as of	Impairment at the year	Balance as of	Impairment at the year	Balance as of
	January 1, 2016		December 31, 2016		December 31, 2017
In service
UEG Araucária (19.9.1)	-	(69,073)	(69,073)	69,073	-
Power plants in Paraná  (19.9.2)	(15,095)	6,850	(8,245)	3,259	(4,986)
	(15,095)	(62,223)	(77,318)	72,332	(4,986)
In progress
HPP Colíder (19.9.3)	(642,551)	47,062	(595,489)	(87,532)	(683,021)
Wind power complex Cutia (19.9.4)	-	(232,827)	(232,827)	8,317	(224,510)
Wind power complex Bento Miguel (19.9.4)	-	(81,637)	(81,637)	(16,594)	(98,231)
Consórcio Tapajós	-	(14,464)	(14,464)	-	(14,464)
Power plants in Paraná  (19.9.2)	(61,754)	(149,934)	(211,688)	21,556	(190,132)
	(704,305)	(431,800)	(1,136,105)	(74,253)	(1,210,358)
	(719,400)	(494,023)	(1,213,423)	(1,921)	(1,215,344)

Impairment risk

Cash generating unit			VR/VC-1	VR/VC-1	Impairment Risk
	Discount rate	VR/VC-1	(5% Variation)	(10% Variation)
Complexo EOL São Bento	7.11%	55.28%	50.63%	46.22%	-
Complexo EOL Brisa I	7.11%	37.47%	33.37%	29.47%	-
Complexo EOL Brisa II	7.11%	8.26%	4.32%	0.60%	-
Complexo EOL Voltalia (a)	7.11%	0.95%	-1.99%	-4.80%	10,772
Hydric Assets
Foz do Areia	8.11%	422.35%	416.91%	411.56%	-
Segredo	8.11%	229.15%	222.11%	215.32%	-
Caxias	8.11%	192.16%	185.52%	179.11%	-
Guaricana	8.11%	63.71%	61.10%	58.55%	-
Chaminé	8.11%	87.54%	84.92%	82.36%	-
Chopim I	8.11%	149.27%	142.63%	136.28%	-
São Jorge	8.11%	55.49%	53.29%	51.13%	-
Melissa	8.11%	122.19%	116.80%	111.63%	-
Desvio do Rio Jordão	8.11%	229.15%	222.11%	215.32%	-
Palmas	8.11%	72.85%	67.51%	62.44%	-
Elejor	8.11%	172.07%	165.68%	159.59%	-
(a) Impairment value of the Complex as a whole. The write-off of Copel’s impairment loss consists only of the authorization
rights on acquisition of R$10,772 thousand (balance at December 31, 2017).

XML

20. Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2017

Intangible Assets Tables

Inangible assets

	12.31.2017	12.31.2016
Distribution concession agreement (20.1)	5,750,873	5,513,381
Generation concession agreements/ authorization (20.2)	619,221	663,712
Concession agreement - gas distribution (20.3)	43,888	238,509
Others (20.4)	38,842	44,210
	6,452,824	6,459,812

Changes in Intangible Assets

20.1    Distribution concession agreement

.
				Special liabilities
	in service	in progress	in service	in progress	Total
Balance as of January 1, 2016	7,230,163	773,107	(2,830,995)	(40,763)	5,131,512
Acquisitions	-	892,693	-	-	892,693
Customers contributions	-	-	-	(122,809)	(122,809)
Provision for claims added to the cost of the works	-	3,430	-	-	3,430
Transfers for accounts receivable related to concession	(2,230)	(56,740)	-	-	(58,970)
Capitalizations for intangible in service	743,351	(743,351)	(135,104)	135,104	-
Amortization of quotas - concession and authorization (a)	(395,255)	-	121,075	-	(274,180)
Amortization of quotas - PIS/Pasep and Cofins credits	(11,270)	-	-	-	(11,270)
Amortization of quotas appropriated in the cost of the work	(292)	292	-	-	-
Loss on disposal	(27,309)	(19,716)	-	-	(47,025)
Balance as of December 31, 2016	7,537,158	849,715	(2,845,024)	(28,468)	5,513,381
Acquisitions	-	757,709	-	-	757,709
Customers contributions	628	-	(579)	(125,983)	(125,934)
Provision for claims added to the cost of the works	-	(1,587)	-	-	(1,587)
Transfers for accounts receivable related to concession (Note 10.1)	-	(56,853)	-	-	(56,853)
Capitalizations for intangible in service	822,472	(822,472)	(128,351)	128,351	-
Amortization of quotas - concession (a)	(411,575)	-	125,740	-	(285,835)
Amortization of quotas - PIS/Pasep and Cofins credits	(11,014)	-	-	-	(11,014)
Loss on disposal	(29,704)	(12,066)	2,776	-	(38,994)
Balance as of December 31, 2017	7,907,965	714,446	(2,845,438)	(26,100)	5,750,873
(a) Amortization during the concession as of the start of commercial operations of the enterprises or based on the useful life of the assets, of the two the shortest.

20.2    Generation concession agreement

.
	Concession contract (a)		Concession and
	in service	in progress	authorization rights	Total
Balance as of January 1, 2016	242,298	5,557	416,272	664,127
ANEEL grant - use of public property	-	742	-	742
Renegotiation of hydrological risk - GSF	26,872	-	-	26,872
Amortization of quotas - concession and authorization (a)	(14,890)	-	(13,139)	(28,029)
Balance as of December 31, 2016	254,280	6,299	403,133	663,712
ANEEL grant - use of public property	-	678	-	678
Amortization of quotas - concession and authorization (b)	(17,837)	-	(13,139)	(30,976)
Transfers to property, plant and equipment	-	-	(14,193)	(14,193)
Balance as of December 31, 2017	236,443	6,977	375,801	619,221
(a) Includes the balances of use of public asset and hydrological risk renegotiation.
(b) Amortization during the concession/authorization as of the start of commercial operations of the enterprises.

20.3    Concession agreement - gas distribution

.
	in service	in progress	Total
Balance as of January 1, 2016	187,608	119,100	306,708
Acquisitions	-	25,847	25,847
Transfers for accounts receivable related to concession	-	(68,737)	(68,737)
Capitalizations for intangible in service	35,934	(35,934)	-
Amortization of quotas - concession and authorization (a)	(25,251)	-	(25,251)
Loss on disposal	(20)	(38)	(58)
Balance as of December 31, 2016	198,271	40,238	238,509
Acquisitions	-	13,745	13,745
Transfers for accounts receivable related to concession	(154,908)	(24,501)	(179,409)
Capitalizations for intangible in service	10,011	(10,011)	-
Amortization of quotas - concession (a)	(28,753)	-	(28,753)
Loss on disposal	(204)	-	(204)
Balance as of December 31, 2017	24,417	19,471	43,888
(a)  Amortization during the concession as of the start of commercial operations of the enterprises or based on the useful life of the assets, of the two the shortest.

20.4    Other intangible assets

.
	in service	in progress	Total
Balance as of January 1, 2016	22,853	19,876	42,729
Acquisitions	-	10,187	10,187
Transfers from property, plant and equipment	25	341	366
Transfers from investments	-	122	122
Transfers from accounts receivable related to concession	150	-	150
Capitalizations for intangible in service	11,690	(11,690)	-
Amortization of quotas (a)	(8,936)	-	(8,936)
Amortization of quotas - PIS/Pasep and Cofins credits	(57)	-	(57)
Loss on disposal	-	(351)	(351)
Balance as of December 31, 2016	25,725	18,485	44,210
Acquisitions	-	6,932	6,932
Transfers from property, plant and equipment	105	-	105
Capitalizations for intangible in service	5,744	(5,744)	-
Amortization of quotas (a)	(8,809)	-	(8,809)
Amortization of quotas - PIS/Pasep and Cofins credits	(54)	-	(54)
Loss on disposal	(18)	(3,524)	(3,542)
Balance as of December 31, 2017	22,693	16,149	38,842
(a) Annual amortization rate: 20%.

XML

21. Payroll, Social Charges and Accruals (Tables)

12 Months Ended

Dec. 31, 2017

Payroll Social Charges And Accruals Tables

Payroll, Social Charges and Accruals

	12.31.2017	12.31.2016
Social security liabilities
Taxes and social contribution	49,748	50,016
Social security charges on paid vacation and 13th salary	32,686	35,570
	82,434	85,586
Labor liabilities
Payroll, net	1,796	835
Vacation	106,450	111,021
Profit sharing	68,817	64,814
Voluntary termination	38,642	25,532
Profit sharing	15,828	9
	231,533	202,211
	313,967	287,797

XML

22. Suppliers (Tables)

12 Months Ended

Dec. 31, 2017

Suppliers Tables

Suppliers

	12.31.2017	12.31.2016
Energy supplies	986,689	673,442
Materials and supplies	521,969	399,576
Natural gas for resale	101,026	132,985
Charges for use of grid system	117,362	86,347
	1,727,046	1,292,350
Current	1,683,577	1,255,639
Noncurrent	43,469	36,711

XML

23. Loans and Financing (Tables)

12 Months Ended

Dec. 31, 2017

Loans And Financing Tables

Loans and Financing

			Issue	Number of	Final	Annual rate p.y.	Finance
	Contracts	Company	Date	installment	maturity	(interest + commission)	charges	Principal	12.31.2017	12.31.2016
Foreign currency
National Treasury Department - STN
(Secretaria do Tesouro Nacional)
(1)	Par Bond	Copel	05.20.1998	1	04.11.2024	6.0% + 0.20%	Half-yearly	17,315	52,768	53,498
(1)	Discount Bond	Copel	05.20.1998	1	04.11.2024	1.1875%+0.20%	Half-yearly	12,082	36,502	37,007
Total foreign currency									89,270	90,505
Local currency
Banco do Brasil
(2)	21/02155-4	Copel DIS	09.10.2010	2	08.15.2018	109.0% of DI	Half-yearly	116,667	60,049	122,713
(3)	21/02248-8	Copel DIS	06.22.2011	2	05.16.2018	109.0% of DI	Half-yearly	150,000	75,601	152,314
(4)	CCB 21/11062X	Copel DIS	08.26.2013	3	07.27.2018	106.0% of DI	Half-yearly	151,000	51,932	151,359
(5)	CCB 330.600.773	Copel DIS	07.11.2014	3	07.11.2019	111.8% of DI	Half-yearly	116,667	80,699	124,170
(6)	CFX 17/35959-7	Copel DIS	05.16.2017	2	05.06.2019	12.0%	Quarterly	75,000	75,291	-
(7)	CCB 21/00851-5	Copel DIS	06.30.2017	2	06.13.2019	11.0%	Quarterly	38,889	38,241	-
(8)	CCB 17/35960-0	Copel DIS	07.27.2017	2	07.17.2019	11.0%	Quarterly	50,333	51,073	-
(9)	CFX 17/35958-9	Copel DIS	08.15.2017	2	08.05.2019	11.0%	Quarterly	58,333	58,636	-
(10)	NCI 330.600.132	Copel	02.28.2007	3	02.28.2019	107.8% of DI	Half-yearly	231,000	157,707	241,312
(11)	NCI 330.600.151	Copel	07.31.2007	3	07.31.2017	111.0% of DI	Half-yearly	18,000	-	6,366
(12)	CCB 306.401.381	Copel	07.21.2017	3	07.21.2020	120.0% of DI	Half-yearly	640,005	660,949	677,177
(13)	NCI 306.401.445	Copel	02.24.2017	2	02.15.2020	124.5% of DI	Half-yearly	77,000	78,186	-
									1,388,364	1,475,411
Eletrobras
(14)	980/95	Copel DIS	12.22.1994	80	11.15.2018	8.0%	Quarterly	11	3	5
(14)	981/95	Copel DIS	12.22.1994	80	08.15.2019	8.0%	Quarterly	1,169	115	180
(14)	982/95	Copel DIS	12.22.1994	80	02.15.2020	8.0%	Quarterly	1,283	48	71
(14)	983/95	Copel DIS	12.22.1994	80	11.15.2020	8.0%	Quarterly	11	77	103
(14)	984/95	Copel DIS	12.22.1994	80	11.15.2020	8.0%	Quarterly	14	33	44
(14)	985/95	Copel DIS	12.22.1994	80	08.15.2021	8.0%	Quarterly	61	23	29
(15)	142/06	Copel DIS	05.11.2006	120	09.30.2018	5.0% + 1.0%	Monthly	74,340	2,730	6,369
(15)	206/07	Copel DIS	03.03.2008	120	08.30.2020	5.0% + 1.0%	Monthly	109,642	23,746	32,648
(15)	273/09	Copel DIS	02.18.2010	120	12.30.2022	5.0% + 1.5%	Monthly	63,944	8,222	9,866
									34,997	49,315
Caixa Econômica Federal
(15)	415.855-22/14	Copel DIS	03.31.2015	120	12.08.2026	6.0%	Monthly	2,844	5,087	5,631
(16)	3153-352	Copel DIS	11.01.2016	36	01.15.2022	5.5 % above TJLP	Quarterly	489	498	-
									5,585	5,631
Finep
(17)	21120105-00	Copel TEL	07.17.2012	81	10.15.2020	4%	Monthly	35,095	8,855	11,983
(17)	21120105-00	Copel TEL	07.17.2012	81	10.15.2020	3.5% + TR	Monthly	17,103	7,482	10,043
									16,337	22,026
BNDES
(18)	820989.1	Copel GeT	03.17.2009	179	01.15.2028	1.63% above TJLP	Monthly	169,500	118,370	128,722
(19)	1120952.1-A	Copel GeT	12.16.2011	168	04.15.2026	1.82% above TJLP	Monthly	42,433	26,078	28,895
(20)	1120952.1-B	Copel GeT	12.16.2011	168	04.15.2026	1.42% above TJLP	Monthly	2,290	1,407	1,559
(21)	1220768.1	Copel GeT	09.28.2012	192	07.15.2029	1.36% above TJLP	Monthly	73,122	55,357	59,493
(22)	13211061	Copel GeT	12.04.2013	192	10.15.2031	1.49% above TJLP	Monthly	1,041,155	871,022	923,982
(23)	13210331	Copel GeT	12.03.2013	168	08.15.2028	1.49% and 1.89%  above TJLP	Monthly	17,644	13,878	15,017
(24)	15206041	Copel GeT	12.28.2015	168	06.15.2030	2.42% above TJLP	Monthly	34,265	25,899	27,666
(25)	15205921	Copel GeT	12.28.2015	168	12.15.2029	2.32% above TJLP	Monthly	21,584	15,734	16,860
(26)	14205611-A	Copel DIS	12.15.2014	72	01.15.2021	2.09% p.y. above TJLP	Monthly	41,583	21,266	27,893
(26)	14205611-B	Copel DIS	12.15.2014	6	02.15.2021	2.09 p.y. above TR BNDES	Annual	17,821	15,384	18,735
(27)	14205611-C	Copel DIS	12.15.2014	113	06.15.2024	6% p.y.	Monthly	78,921	50,949	58,787
(28)	14205611-D	Copel DIS	12.15.2014	57	02.15.2021	TJLP	Monthly	750	29	38
(29)	14212711	Santa Maria	06.01.2015	192	08.15.2031	1.66% p.y. above TJLP	Monthly	59,462	51,578	54,734
(29)	14212721	Santa Helena	06.01.2015	192	08.15.2031	1.66% p.y. above TJLP	Monthly	64,520	55,932	59,355
(30)	11211521	GE Farol	03.19.2012	192	06.15.2030	2.34% p.y. above TJLP	Monthly	54,100	48,742	52,053
(30)	11211531	GE Boa Vista	03.19.2012	192	06.15.2030	2.34% p.y. above TJLP	Monthly	40,050	36,034	38,482
(30)	11211541	GE S.B. do Norte	03.19.2012	192	06.15.2030	2.34% p.y. above TJLP	Monthly	90,900	81,723	87,275
(30)	11211551	GE Olho D'Água	03.19.2012	192	06.15.2030	2.34% p.y. above TJLP	Monthly	97,000	87,278	93,229
									1,576,660	1,692,775
(31)	Promissory notes	Copel GeT	12.29.2015	1	12.18.2017	117% of DI	Single installment	500,000	-	581,909
(32)	Promissory notes	Copel GeT	05.12.2017	1	05.12.2019	117% of DI	Single installment	500,000	529,919	-
									529,919	581,909
Banco do Brasil
BNDES Transfer
(33)	21/02000-0	Copel GeT	04.16.2009	179	01.15.2028	2.13% above TJLP	Monthly	169,500	118,373	128,721
									118,373	128,721
Total local currency									3,670,235	3,955,788
									3,759,505	4,046,293
								Current	784,666	1,470,742
								Noncurrent	2,974,839	2,575,551

Allocation:

(1) The restructuring of medium and long-term debt in connection with the financing received under Law No. 4,131/1962.

(2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) Working capital.

(14) National Program for Watering - Proni.

(15) Rural Electricity Program - Luz para Todos.

(16)  Operation for the acquisition of machinery and/or equipment and IT and automation equipment.

(17) BEL project - ultra wide band intranet service (Ultra Wide Band - UWB).

(18) (33) Construction of the Mauá Hydroelectric Power Plant and its transmission system, in consortium with Eletrosul.

(19) Implementation of transmission line between substations Foz do Iguaçu and Cascavel Oeste.

(20) Purchase of machinery and equipment for implementation of the transmission line described above.

(21) Implementation of Cavernoso II SHP.

(22) Implementation of HPP Colíder and associated transmission system.

(23) Implementation of the 230/138kV Cerquilho III Substation.

(24) Implementation of transmission line Assis – Paraguaçu Paulista II.

(25) Implementation of transmission lines Londrina – Figueira and Salto Osório – Foz do Chopim C2.

(26) Investment in preservation of businesses, improvements, operational support and general investments in expansion.

(27) National machinery and equipment accredited by BNDES.

(28) Implementation, expansion and consolidation of projects and  Enterprises Social Investment Programs (ISE).

(29) (30) Construction and implementation of wind generating plant.

(31) Payment of grant – auction 012/2015, relative to HPP GPS.

(32) Payment of the first installment of Copel’s debentures and working capital improvement of Copel GeT.

Guarantees:

(1) Company’s centralized revenues account. Deposited Collateral (23.1).

(2) (3) Pledge until 360 days.

(2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (20) Credit assignment.

(14) (15) Own revenue, supported by power of attorney granted by a public instrument, and the issue of promissory notes and commercial duplicates equal to the number of installments falling due.

(16) Fiduciary assignment of trade notes.

(17) Withhold the amounts from the checking account in which revenues are deposited.

(18) (21) (33) Total revenue from the sale and/or transaction of CCEAR energy, related to the project, through Concession Agreement of
Attachment of Revenues, Account Management and Other Covenants.

(19) (20) Fiduciary assignment of rights under the Concession Agreement No. 027/2009-ANEEL, Transmission Service Provision Contract No.
09/2010-ONS and contracts for use of Transmission System, signed by the ONS, the Dealerships and the Transmission System users, including the total income from the provision of transmission services.

(22) Fiduciary assignment of rights under the Concession Agreement No. 01/2011MME-HPP Colíder and fiduciary assignment due to the Purchase and Sale of Energy (CCVEE) between Copel and BRF - Brasil Foods S.A.

(23) Fiduciary assignment of rights under the Public Service Concession Agreement for Electric Power Transmission No. 015/2010-ANEEL, signed between Copel and the Federal Government.

(24) Assignment of credit rights deriving from Concession Agreement No. 002/2013 - ANEEL.

(25) Assignment of credit rights deriving from Concession Agreement No. 022/2012 - ANEEL.

(26) (27) (28) Surety of Companhia Paranaense de Energia; fiduciary assignment of income and indemnity rights of the concession.

(29) Guarantee from Companhia Paranaense de Energia; pledge of shares; assignment of credit rights deriving from Electricity Agreement Reservation No. 153/2011; assignment of revenues arising from the project.

(30) Pledge of shares (GE Farol, GE Boa Vista, GE São Bento do Norte and GE Olho D'Água); assignment of receivables arising from the sale of electricity produced by the project; assignment of machinery and equipment assembled or built with the funds pegged to it.

(31) (32) Surety of Companhia Paranaense de Energia.

Loans and Financing by Currency and Index

		12.31.2017	%	12.31.2016	%
Foreign currency - change in currencies in the period (%)
U.S. Dollar	(1.32)	89,270	2.37	90,505	2.24
		89,270	2.37	90,505	2.24
Local currency - accumulated index in the period (%)
CDI	6.89	1,695,042	45.09	2,057,320	50.84
TJLP	7.00	1,629,198	43.34	1,743,974	43.10
TR	0.00	22,866	0.61	28,778	0.71
Without indexer	-	323,129	8.59	125,716	3.11
		3,670,235	97.63	3,955,788	97.76
		3,759,505	100.00	4,046,293	100.00

Maturity of Noncurrent Installments

12.31.2017	Foreign currency	Local currency	Total
2019	-	1,219,313	1,219,313
2020	-	407,504	407,504
2021	-	141,144	141,144
2022	-	136,801	136,801
2023	-	135,156	135,156
After 2023	88,485	846,436	934,921
	88,485	2,886,354	2,974,839

Changes in Loans and Financing

	Foreign currency	Local currency	Total
Balance as of January 1, 2016	104,434	3,972,626	4,077,060
Funding	-	93,806	93,806
Charges	3,909	448,161	452,070
Monetary and exchange variations	(13,878)	26,336	12,458
Amortization - principal	-	(226,973)	(226,973)
Payment - charges	(3,960)	(358,168)	(362,128)
Balance as of December 31, 2016	90,505	3,955,788	4,046,293
Funding	-	800,044	800,044
Charges	3,868	395,081	398,949
Monetary and exchange variations	(1,184)	18,623	17,439
Amortization - principal	-	(971,187)	(971,187)
Payment - charges	(3,919)	(528,114)	(532,033)
Balance as of December 31, 2017	89,270	3,670,235	3,759,505

Financial Covenants

Company	Contract	Financial index	Limit
Copel GeT	BNDES Finem No. 820989.1 - Mauá	EBITDA /  Net financial results	≥ 1.3
	Banco do Brasil No. 21/02000-0 - Mauá
	3rd issue of Promissory Notes	Consolidated net debt / Consolidated EBITDA	≤ 3.5
		Debt service coverage ratio	≥ 1.5
Copel DIS	BNDES Finem No. 14205611	Financial indebtedness / adjusted EBITIDA	≤ 5.0
Santa Maria	BNDES Finem No. 14212711	Debt service coverage ratio	≥ 1.3
Santa Helena	BNDES Finem No. 14212721
São Bento Energia, Investimento e Participações	BNDES Assignment Agreement	Debt service coverage ratio	≥ 1.3
GE Boa Vista S.A.	BNDES Finem No. 11211531
GE Farol S.A.	BNDES Finem No. 11211521
GE Olho D´Água S.A.	BNDES Finem No. 11211551
GE São Bento do Norte S.A.	BNDES Finem No. 11211541
Financing for businesses - Finem

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24. Debentures (Tables)

12 Months Ended

Dec. 31, 2017

Debentures Tables

Debentures

		Issue	Number of	Maturity		Annual rate p.y.
Issue	Company	Date	installment	initial	final	(interest)	Principal	12.31.2017	12.31.2016
(1)   5th	Copel	05.13.2014	3	05.13.2017	05.13.2019	111.5% of DI	1,000,000	672,537	1,017,099
(2)   6th	Copel	06.29.2017	1	-	06.28.2019	117.0% of DI	520,000	542,944	-
(3)   1st	Copel GeT	05.15.2015	3	05.15.2018	05.15.2020	113.0% of DI	1,000,000	1,059,822	1,094,731
(4)   2nd	Copel GeT	07.13.2016	2	07.13.2018	07.13.2019	121.0% of DI	1,000,000	1,037,570	1,060,613
(5)   3rd	Copel GeT	10.20.2017	3	10.20.2020	10.20.2022	126.0% of  DI	1,000,000	999,442	-
(6)   1st	Copel DIS	10.30.2012	2	10.30.2016	10.30.2017	DI + Spread 0.99% p.y.	1,000,000	-	511,525
(7)   2nd	Copel DIS	10.27.2016	2	10.27.2018	10.27.2019	124.0% of DI	500,000	502,179	504,699
(8)   3rd	Copel DIS	10.20.2017	2	10.20.2021	10.20.2022	126.0% of  DI	500,000	501,810	-
(9)   1st	Copel TEL	10.15.2015	5	10.15.2020	10.15.2024	IPCA + 7.9633% p.y.	160,000	184,506	174,184
(10)  2nd	Copel TEL	07.15.2017	1	-	07.15.2022	IPCA + 5.4329	220,000	215,675	-
(11)  2nd	(a)	03.24.2016	192	08.15.2016	07.15.2032	TJLP + 2.02% p.y.	147,575	135,662	143,407
(12)  2nd	(a)	03.24.2016	192	08.15.2016	07.15.2032	IPCA + 9.87% p.y.	153,258	145,786	151,781
(13)  2nd	Elejor	09.26.2013	60	10.26.2013	09.26.2018	DI + Spread 1.00% p.y.	203,000	30,370	70,984
(14)  1st	Compagás	06.15.2013	40	09.15.2015	12.15.2018	TJLP+1.7% p.y.+1.0% p.y.	62,626	19,214	38,018
(15)  2nd	Compagás	04.15.2016	57	07.15.2017	12.15.2021	TJLP/Selic + 2.17% p.y.	33,620	23,461	23,768
								6,070,978	4,790,809
							Current	1,632,062	1,131,198
							Noncurrent	4,438,916	3,659,611
(a)  Nova Asa Branca I, Nova Asa Branca II, Nova Asa Branca III, Nova Eurus IV e Ventos de Santo Uriel.
Characteristics:
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (13) Simple debentures, single series, not convertible into shares, unsecured, for public distribution
with restricted placement efforts, according to CVM No. 476.
(11) Simple debentures, 1st serie, issued privately and not convertible into shares.
(12) Simple debentures, 2nd serie, issued privately and not convertible into shares.
(14) (15) Simple floating debentures, issued privately in a single series and not convertible into shares.
Finance charges:
(1) Half-yearly interest - May and November.
(2) Interest on the maturity of the agreement
(3) Annual interest - May.
(4) Annual interest - July.
(5) (6) (8) (9)  Half-yearly interest - April and October.
(7) Annual interest - October.
(10) Half-yearly interest - January and July.
(11) (12) (13) Monthly interest.
(14) (15) Quarterly interest - March, June, September and December.
Allocation:
(1) (2) (3) (4) (5) (6) (7) (8) Working capital or used to make investments in the issuer.
(9) (10) Deployment, expansion and modernization of the telecommunication network.
(11) (12) Implementation of wind farms and associated transmission systems.
(13) Full settlement of the loan agreement with Copel.
(14) (15) Fund investment plan of the issuer.
Collaterals:
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (13) Personal guarantee
(11) (12) Real and personal guarantee and pledge of Copel Geração e Transmissão's shares.
(14) (15) Floating
Guarantor:
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) Copel.
(13) Copel, at the ratio of  70% and Paineira Participações S.A., at the ratio of  30%.
(14) (15)  Compagás.
Trustee:
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (13) Pentágono S.A. DTVM.
(11) (12) None.
(14) (15)  BNDES Participações S.A. - BNDESPAR.

Maturity of Noncurrent Installments

12.31.2017
2019	1,973,438
2020	695,598
2021	618,483
2022	867,060
2023	69,247
After 2023	215,090
	4,438,916

Changes in Debentures

Balance as of January 1, 2016	3,683,928
Funding	1,822,965
Charges and monetary variations	617,126
Amortization - principal	(785,239)
Payment - charges	(547,971)
Balance as of December 31, 2016	4,790,809
Funding	2,242,521
Charges and monetary variations	575,468
Amortization - principal	(915,005)
Payment - charges	(622,815)
Balance as of December 31, 2017	6,070,978

Financial Covenants

Company	Contract	Financial index	Limit
Copel	5th issue of Debentures	Consolidated net debt / Consolidated EBITDA Debt service coverage ratio	≤  3.5 ≥ 1.5
	6th issue of Debentures
Copel GeT	1st issue of Debentures
	2nd issue of Debentures
	3rd issue of Debentures
Copel DIS	2nd issue of Debentures
	3rd issue of Debentures
Copel TEL	1st issue of Debentures
	2nd issue of Debentures
Elejor	2nd issue of Debentures	Consolidated net debt / Consolidated EBITDA	≤  4.0
		Debt service coverage ratio	≥ 1.2
Compagás	1st issue of Debentures	Consolidated net debt / Consolidated EBITDA	≤  3.5
	2nd issue of Debentures	General Indebtedness	≤  0.7
Nova Asa Branca I	2nd issue of Debentures	Debt service coverage ratio	≥ 1.3
Nova Asa Branca II
Nova Asa Branca III
Nova Eurus IV
Ventos de Santo Uriel

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25. Post-Employment Benefits (Tables)

12 Months Ended

Dec. 31, 2017

Post-employment Benefits Tables

Liabilities Under Post-Employment Benefits

	12.31.2017	12.31.2016
Pension plans	1,069	1,252
Healthcare plans	865,034	768,613
	866,103	769,865
Current	53,225	47,894
Noncurrent	812,878	721,971

Post-Employment Benefits Recognized in the Statement of Income

	12.31.2017	12.31.2016	12.31.2015
Employees
Pension plans	78,680	75,407	65,878
Healthcare plan - post-employment	97,511	129,647	143,236
Healthcare plan - active employees	81,617	75,578	61,927
(-) Transfers to construction in progress	(21,901)	(22,268)	(19,094)
	235,907	258,364	251,947
Management
Pension plans	1,500	1,175	2,241
Healthcare plan	190	228	139
	1,690	1,403	2,380
	237,597	259,767	254,327

Changes in Post-Employment Benefits

	Total
Balance as of January 1, 2016	594,660
Appropriation of actuarial calculation	130,707
Pension and healthcare contributions	142,735
Adjustment related to actuarial gains (loss)	88,906
Amortizations	(187,143)
Balance as of December 31, 2016	769,865
Appropriation of actuarial calculation	97,511
Appropriation of pension and healthcare contributions	153,069
Adjustment related to actuarial gains (loss)	46,506
Amortizations	(200,848)
Balance as of December 31, 2017	866,103

Actuarial Assumptions

		2017		2016
	Real	Nominal	Real	Nominal
Economic
Inflation p.y.	-	4.50%	-	5.15%
Expected rate of discount/return p.y.
Unified Plan	5.11%	9.84%	5.91%	11.37%
Plan III	5.24%	9.97%	5.89%	11.34%
Assistance Plan	5.20%	9.94%	5.89%	11.35%
Salary growth Unified Plan p.y.	2.00%	6.59%	2.00%	7.25%
Salary growth Plan III p.y.	1.50%	6.07%	2.00%	7.25%
Demographic
Mortality Table		AT - 2000		AT - 2000
Mortality table of individuals with permanent disability		WINKLEVOSS		WINKLEVOSS
Table of new disability benefit vested		TASA 1927		A. VINDAS

Participants and Beneficiaries

	Social Security Plans
	Unified Plan		Plan III		Assistance Plan
	12.31.2017	12.31.2016	12.31.2017	12.31.2016	12.31.2017	12.31.2016
Number of active participants	37	39	8,540	8,663	8,172	8,456
Number of Inactive participants	4,435	4,463	3,509	3,363	7,703	7,546
Number of dependent people	-	-	-	-	23,081	23,745
Total	4,472	4,502	12,049	12,026	38,956	39,747

Life Expectancy

	Unified Plan	Plan III
As of 12.31.2017
Retired participants	14.92	23.01
Pensioner participants	16.37	27.99
As of 12.31.2016
Retired participants	15.62	23.75
Pensioner participants	16.59	28.89

Actuarial Evaluation

	Unified Plan	Plan III	Assistance Plan	12.31.2017	12.31.2016
Total liabilities or partially covered	5,352,894	1,734,568	1,035,957	8,123,419	7,450,113
Fair value of the plan assets	(5,834,572)	(1,821,055)	(170,923)	(7,826,550)	(7,437,619)
Plan coverage status	(481,678)	(86,487)	865,034	296,869	12,494
Unrecognized asset	481,678	86,487	-	568,165	756,119
	-	-	865,034	865,034	768,613

Changes in Actuarial Liabilities

	Unified Plan	Plan III	Assistance Plan
Present value of net actuarial obligations as of January 1, 2015	4,379,430	1,181,893	1,047,284
Cost of services	471	8,275	34,802
Cost of interest	559,366	146,595	127,622
Benefits paid	(345,288)	(93,670)	(74,722)
Actuarial (gain) losses	(419,094)	(72,565)	(378,704)
Present value of net actuarial obligations as of December 31, 2015	4,174,885	1,170,528	756,282
Cost of services	203	10,174	44,942
Cost of interest	601,259	170,531	108,465
Benefits paid	(381,274)	(109,146)	(88,259)
Actuarial (gain) losses	556,005	323,034	112,484
Present value of net actuarial obligations as of December 31, 2016	4,951,078	1,565,121	933,914
Cost of services	329	10,502	9,225
Cost of interest	563,257	176,878	105,987
Benefits paid	(406,023)	(122,841)	(7)
Actuarial (gain) losses	244,253	104,908	(13,162)
Present value of net actuarial obligations as of December 31, 2017	5,352,894	1,734,568	1,035,957

Changes in Actuarial Assets

	Unified Plan	Plan III	Assistance Plan
Fair value of the Plan's assets as of January 1, 2015	4,562,547	1,201,802	149,696
Return estimated for assets	564,872	146,592	19,223
Contributions and distributions	36,294	8,275	-
Benefits paid	(345,288)	(93,670)	-
Actuarial gain (losses)	(330,875)	(100,030)	(6,289)
Fair value of the Plan's assets as of December 31, 2015	4,487,550	1,162,969	162,630
Return estimated for assets	637,541	169,429	23,749
Contributions and distributions	25,724	10,174	-
Benefits paid	(381,274)	(109,146)	-
Actuarial gain (losses)	709,261	560,090	(21,078)
Fair value of the Plan's assets as of December 31, 2016	5,478,802	1,793,516	165,301
Return estimated for assets	546,699	202,691	23,934
Contributions and distributions	30,520	10,505	-
Benefits paid	(406,023)	(122,841)	-
Actuarial gain (losses)	184,574	(62,816)	(18,312)
Fair value of the Plan's assets as of December 31, 2017	5,834,572	1,821,055	170,923

Estimated Net Periodic Plan Costs (Gains)

	Unified Plan	Plan III	Assistance Plan	2018
Cost of current service	589	9,644	11,633	21,866
Estimated cost of interest	533,202	196,009	102,916	832,127
Expected return on plan assets	(531,448)	(205,782)	(16,579)	(753,809)
Expected employee contributions	(248)	(9,644)	-	(9,892)
Costs (income or loss)	2,095	(9,773)	97,970	90,292

Sensitivity Analysis

.	Projected scenarios
	Increase by 1%	Decrease in 1%
Sensitivity of long-term interest rate
Impacts on the obligations of the pension	(444,891)	450,899
Impacts on the obligations of healthcare program	(178,133)	181,222
Sensitivity of growth rate of the medical costs
Impacts on the obligations of healthcare program	72,077	(67,341)
Impact on cost of service for the following financial year of healthcare program	793	(741)
Sensitivity of the service cost
Impacts on the obligations of the pension	(49)	50
Impacts on the obligations of healthcare program	(1,961)	1,995

Benefits Payable

	Unified Plan	Plan III	Assistance Plan	Total
2018	395,584	128,975	41,454	566,013
2019	379,182	181,726	46,407	607,315
2020	362,032	184,824	45,972	592,828
2021	345,456	186,267	45,301	577,024
2022	329,172	186,851	44,509	560,532
2023 to 2057	3,271,908	2,945,247	590,068	6,807,223

Asset Allocation for Pension and Healthcare Plans

	Goal for 2018	2017
Fixed income	87.5%	89.3%
Variable income	6.2%	6.5%
Loans	1.1%	1.3%
Real estate	1.5%	1.7%
Investment structuring	3.7%	1.2%
	100.0%	100.0%

Fund Management Limits

	Unified Plan		Plan III
	target (%)(*)	minimum (%)	target (%)	minimum (%)
Fixed income	91.5%	77.0%	81.0%	59.0%
Variable income	3.0%	1.0%	11.0%	7.0%
Loans	0.5%	0.0%	2.0%	1.0%
Real estate	2.0%	1.0%	1.0%	0.0%
Investment structuring	3.0%	0.0%	5.0%	0.0%
(*) Target based on the total investment of each plan.
Management of Fundação Copel decided to keep a more conservative approach investing in variable income in relation to the allowed legal limit, which is 70%.

Pension Plan Assets

	Social Security Plans
	Unified Plan		Plan III
	12.31.2017	12.31.2016	12.31.2017	12.31.2016
Shares	-	66	-	186
	-	66	-	186

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26. Customer Charges Due (Tables)

12 Months Ended

Dec. 31, 2017

Customer Charges Due Tables

Customer Charges Due

	12.31.2017	12.31.2016
Energy Development Account - CDE (a)	121,912	136,450
Tariff flags	22,427	-
Global Reversal Reserve - RGR	5,686	5,262
	150,025	141,712
(a) Aneel published Resolutions No. 2,002/2017, No. 2,204/2017 and No. 2,231/2017.

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27. Research and Development and Energy Efficiency (Tables)

12 Months Ended

Dec. 31, 2017

Research And Development And Energy Efficiency Tables

Investment in Research and Development (R&D) and the Energy Efficiency Program (EEP)

	Amounts payable, before any related prepayments	Amounts payable to regulatory agencies	Other amounts payable	Balance as of	Balance as of
				12.31.2017	12.31.2016
Research and Development - R&D
National Fund for Scientific and Technological Development - FNDCT	-	5,232	-	5,232	4,603
MME	-	2,616	-	2,616	2,302
R&D	103,617	-	212,504	316,121	294,088
	103,617	7,848	212,504	323,969	300,993
Energy efficiency program  - EEP
National Program of Electricity Conservation - Procel	-	6,041	-	6,041	4,932
EEP	22,854	-	179,611	202,465	177,964
	22,854	6,041	179,611	208,506	182,896
	126,471	13,889	392,115	532,475	483,889
			Current	282,766	231,513
			Noncurrent	249,709	252,376

Changes in Research and Development and the Energy Efficiency Program

	FNDCT	MME	P&D	Procel	PEE	Total
Balance as of January 1, 2016	5,762	2,882	252,828	-	137,521	398,993
Additions	25,535	12,768	25,534	4,804	31,398	100,039
Performance agreement	-	-	-	-	1,907	1,907
Selic interest rate (Note 34)	-	-	25,861	128	15,792	41,781
Payments	(26,694)	(13,348)	-	-	-	(40,042)
Concluded projects	-	-	(10,135)	-	(8,654)	(18,789)
Balance as of December 31, 2016	4,603	2,302	294,088	4,932	177,964	483,889
Additions	29,956	14,978	29,956	8,500	34,000	117,390
Performance agreement	-	-	-	-	1,363	1,363
Selic interest rate (Note 34)	-	-	19,544	(128)	14,929	34,345
Payments	(29,327)	(14,664)	-	(7,263)	-	(51,254)
Concluded projects	-	-	(27,467)	-	(25,791)	(53,258)
Balance as of December 31, 2017	5,232	2,616	316,121	6,041	202,465	532,475

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28. Accounts Payable Related to Concession (Tables)

12 Months Ended

Dec. 31, 2017

Accounts Payable Related To Concession Tables

Concession Charges for use of Public Property

					Discount	Annual
	Company	Grant	Signature	Closing	Rate	Adjustment	12.31.2017	12.31.2016
(1) HPP Mauá	Copel GeT	06.29.2007	07.03.2007	07.2042	5.65% p.y.	IPCA	16,384	16,235
(2) HPP Colider	Copel GeT	12.29.2010	01.17.2011	01.2046	7.74% p.y.	IPCA	23,188	22,783
(3) HPP Baixo Iguaçu	Copel GeT	07.19.2012	08.20.2012	01.2047	7.74% p.y.	IPCA	6,977	6,299
(4) SHP Cavernoso	Copel GeT	07.11.2013	07.11.2013	07.2018	7.74% p.y.	IPCA	27	66
(5) HPP Apucaraninha	Copel GeT	07.11.2013	07.11.2013	07.2018	7.74% p.y.	IPCA	185	460
(6) HPP Chaminé	Copel GeT	07.11.2013	07.11.2013	07.2018	7.74% p.y.	IPCA	320	795
(7) HPP Derivação Rio Jordão	Copel GeT	07.11.2013	02.24.2014	02.2019	7.74% p.y.	IPCA	313	532
(8) HPP Fundão e HPP Santa Clara	Elejor	10.23.2001	10.25.2001	10.2036	11.00% p.y.	IGPM	507,560	518,372
							554,954	565,542
						Current	62,624	66,210
						Noncurrent	492,330	499,332
Discount rate applied to calculate present value:
Actual net discount rate, in line with the estimated long-term rate. It bears no relationship with the expected project return.
Payment to the federal government:
Monthly installments equivalent to 1/12 of the annual payment restated, as defined in the concession agreement.

Nominal and Present Value of Accounts Payable Related to Concession

	Nominal value	Present value
2018	62,779	62,624
2019	62,246	56,079
2020	62,199	50,597
2021	62,199	45,689
After 2021	1,024,162	339,965
	1,273,585	554,954

Changes in Accounts Payable Related to Concession

Balance as of January 1, 2016	535,665
Additions	575,569
Adjust to present value	(483)
Monetary variations	103,384
Payments	(648,593)
Balance as of December 31, 2016	565,542
Additions	678
Adjust to present value	1,432
Monetary variations	53,173
Payments	(65,871)
Balance as of December 31, 2017	554,954

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29. Other Accounts Payable (Tables)

12 Months Ended

Dec. 31, 2017

Other Accounts Payable Tables

Other Accounts Payables

	12.31.2017	12.31.2016
Customers	33,380	32,283
Public lighting rate collected	24,101	27,565
Aneel Order No. 084/2017 provision	22,132	20,542
Financial offset for the use of water resources	21,467	28,880
Investment acquisition	12,307	9,595
Pledges in guarantee	8,837	8,067
Reimbursements to customer contributions	5,481	10,894
Agreement Ivaí Engenharia (a)	-	122,068
Other liabilities	66,549	35,422
	194,254	295,316
Current	121,405	264,791
Noncurrent	72,849	30,525
(a) The agreement covers the discussions on economic - financial balance of contract and extinguishes the judicial process.

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30. Provisions for Legal Claims (Tables)

12 Months Ended

Dec. 31, 2017

Provisions For Legal Claims Tables

Changes in Provisions for Litigation

		Income			Additions to
	Balances as of	Provision		Construction	fixed assets
	January 1, 2017	for litigations		cost	in progress			Balances as of
	Restated	Additions	Reversals	Additions	Additions	Discharges	Transfers	December 31, 2017
Tax
Cofins (a)	93,892	8,888	(23,032)	-	-	-	-	79,748
Others (b)	142,985	21,890	(113,739)	-	-	(433)	8,090	58,793
	236,877	30,778	(136,771)	-	-	(433)	8,090	138,541
Labors (c)	458,901	122,992	(18,518)	-	-	(87,744)	-	475,631
Employee benefits (d)	42,366	61,765	(7,194)	-	-	(7,498)	-	89,439
Civil
Civil and administrative claims (e)	295,484	255,280	(3,240)	-	-	(28,074)	8,163	527,613
Easements (f)	99,380	4,593	-	4,503	2,641	(181)	-	110,936
Expropriations and property (g)	65,712	848	(701)	24,285	5,499	(16)	-	95,627
Customers (h)	5,228	3,884	(286)	-	-	(449)	-	8,377
	465,804	264,605	(4,227)	28,788	8,140	(28,720)	8,163	742,553
Environmental (i)	1,432	960	(808)	-	-	-	-	1,584
Regulatory (j)	67,958	1,648	(5,290)	-	-	-	-	64,316
	1,273,338	482,748	(172,808)	28,788	8,140	(124,395)	16,253	1,512,064
							Current	112,000
							Noncurrent	1,400,064
		Income			Additions to
		Provision		Construction	fixed assets
		for litigations		cost	in progress			Balances as of
	Balances as of				Additions /			December 31, 2016
	January 1, 2016	Additions	Reversals	Additions	(Reversals)	Discharges	Transfers	Restated
Tax
Cofins (a)	258,715	28,563	(193,386)	-	-	-	-	93,892
Others (b)	68,333	118,357	(9,630)	-	-	(1,758)	(32,317)	142,985
	327,048	146,920	(203,016)	-	-	(1,758)	(32,317)	236,877
Labors (c)	408,133	168,352	(9,824)	-	-	(107,760)	-	458,901
Employee benefits (d)	104,480	7,583	(69,334)	-	-	(363)	-	42,366
Civil
Civil and administrative claims (e)	325,217	99,205	(53,965)	-	-	(74,973)	-	295,484
Easements (f)	62,869	1,786	(17,141)	49,842	2,575	(551)	-	99,380
Expropriations and property (g)	196,895	26,764	(943)	1,980	(5,197)	(1,537)	(152,250)	65,712
Customers (h)	13,656	-	(2,195)	-	-	(6,233)	-	5,228
	598,637	127,755	(74,244)	51,822	(2,622)	(83,294)	(152,250)	465,804
Environmental (i)	868	564	-	-	-	-	-	1,432
Regulatory (j)	55,770	12,211	(1)	-	-	(22)	-	67,958
	1,494,936	463,385	(356,419)	51,822	(2,622)	(193,197)	(184,567)	1,273,338

Contingent Liabilities

	12.31.2017	12.31.2016
Tax (a)	858,082	752,625
Labor (b)	360,322	423,495
Employee benefits (c)	20,262	23,631
Civil (d)	1,091,122	594,220
Regulatory (e)	793,720	765,906
	3,123,508	2,559,877

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31. Equity (Tables)

12 Months Ended

Dec. 31, 2017

Equity Tables

Classes of Shares and Main Shareholders

	Number of shares in units
Shareholders	Common		Class "A” Preferred		Class “B” preferred		Total
	in share	%	in share	%	in share	%	in share	%
State of Paraná	85,028,598	58.63	-	-	-	-	85,028,598	31.07
BNDES	38,298,775	26.41	-	-	27,282,006	21.26	65,580,781	23.96
Eletrobrás	1,530,774	1.06	-	-	-	-	1,530,774	0.56
Free float:
B3	18,691,826	12.89	76,763	23.36	68,879,476	53.69	87,648,065	32.03
NYSE	1,144,316	0.79	-	-	31,957,198	24.91	33,101,514	12.10
Latibex	-	-	-	-	128,231	0.10	128,231	0.05
Municipalities	178,393	0.12	9,326	2.84	3,471	-	191,190	0.07
Other shareholders	158,398	0.10	242,538	73.80	45,286	0.04	446,222	0.16
	145,031,080	100.00	328,627	100.00	128,295,668	100.00	273,655,375	100.00

Changes in Equity Value Adjustments

	Equity Valuation Adjustments	Accumulated Other Comprehensive Income	Total
As of 01.01.2015	1,141,485	(164,521)	976,964
Adjustments to financial assets available for sale
Financial investments	-	633	633
Taxes on adjustments	-	(216)	(216)
Equity interest investments	-	(5)	(5)
Taxes on adjustments	-	(1)	(1)
Adjustments related to actuarial liabilities
Post-employment benefits	-	410,330	410,330
Taxes on adjustments	-	(139,059)	(139,059)
Post-employment benefits -  equity	-	19,660	19,660
Realization of equity evaluation adjustment
Deemed cost of fixed assets	(137,031)	-	(137,031)
Taxes on the adjustments	46,590	-	46,590
Attributed to non-controlling interest	-	(495)	(495)
As of 12.31.2015	1,051,044	126,328	1,177,372
Adjustments to financial assets available for sale
Financial investments	-	(2)	(2)
Equity interest investments	-	3,614	3,614
Taxes on adjustments	-	(1,229)	(1,229)
Adjustments related to actuarial liabilities
Post-employment benefits	-	(88,906)	(88,906)
Taxes on adjustments	-	30,174	30,174
Post-employment benefits -  equity	-	(852)	(852)
Realization of equity evaluation adjustment
Deemed cost of fixed assets	(154,102)	-	(154,102)
Taxes on the adjustments	52,395	-	52,395
Actuarial liabilities - investment realization	(19,933)	-	(19,933)
Attributed to non-controlling interest	-	(65)	(65)
As of 12.31.2016	929,404	69,062	998,466
Adjustments to financial assets available for sale
Financial investments	-	3	3
Taxes on adjustments	-	(1)	(1)
Equity interest investments	-	26,135	26,135
Taxes on adjustments	-	(8,887)	(8,887)
Adjustments related to actuarial liabilities
Post-employment benefits	-	(46,506)	(46,506)
Taxes on adjustments	-	16,827	16,827
Realization of equity evaluation adjustment
Deemed cost of fixed assets	(108,561)	-	(108,561)
Taxes on the adjustments	36,911	-	36,911
Gains on Investments in equity investments (Note 16.1)	-	(28,650)	(28,650)
Taxes on adjustments	-	9,741	9,741
Attributed to non-controlling interest	-	123	123
As of 12.31.2017	857,754	37,847	895,601

Proposed Dividend Distribution

	12.31.2017	12.31.2016	12.31.2015
(1)  Calculation of minimum mandatory dividend (25%)
Net income (loss) for the year (a)	1,033,626	958,650	1,192,738
Legal Reserve (5%)	(51,681)	(47,933)	(59,637)
Realization of equity evaluation adjustment	71,650	101,707	90,441
Calculation basis for minimum mandatory dividends	1,053,595	1,012,424	1,223,542
	263,399	253,106	305,885
(2)  Total proposed distribution  (3 + 5)	289,401	282,947	326,795
(3)  Interest on own capital, net	266,000	282,947	198,000
Tax on interest on own capital	(26,002)	(29,841)	(20,910)
(4)  Interest on own capital, net	239,998	253,106	177,090
(5)  Dividends proposed	23,401	-	128,795
(6)  Total proposed distribution, net  (4 + 5)	263,399	253,106	305,885
Gross value of dividends per share:
Ordinary shares	1.00801	0.98539	1.13716
Class “A” preferred shares	2.89050	2.89050	2.52507
Class “B” preferred shares	1.10883	1.08410	1.25473
Gross amount of dividends per class of shares:
Ordinary shares	146,193	142,912	164,924
Class “A” preferred shares	950	949	960
Class “B” preferred shares	142,258	139,086	160,911
(a) The legal reserve, proposed dividends and other corporate impacts recorded in Equity of the financial statements for the years ended December 31, 2016 and 2015 were originally made based on the profit disclosed in those financial statements and did not change due to the restatement mentioned in Note 4.1 since the information available at the time indicated that the corporate impacts would be those approved by the appropriate bodies.

Earnings Per Share - Basic and Diluted

	12.31.2017	12.31.2016 Restated	12.31.2015 Restated
Basic and diluted numerator
Basic and diluted earnings allocated by classes of shares, allocated
to controlling shareholders
Common shares	523,206	453,427	561,637
Class “A” preferred shares	1,304	1,197	1,620
Class “B” preferred shares	509,116	441,148	546,292
	1,033,626	895,772	1,109,549
Basic and diluted denominator
Weighted average of shares (in thousands):
Common shares	145,031,080	145,031,080	145,031,080
Class “A” preferred shares	328,627	348,531	380,291
Class “B” preferred shares	128,295,668	128,275,764	128,244,004
	273,655,375	273,655,375	273,655,375
Basic and diluted earnings per share attributable to shareholders of
parent company:
Common shares	3.60754	3.12641	3.87253
Class “A” preferred shares	3.96830	3.43906	4.25990
Class “B” preferred shares	3.96830	3.43906	4.25979

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32. Net Operating Revenue (Tables)

12 Months Ended

Dec. 31, 2017

Net Operating Revenue Tables

Net Operating Revenue

	Gross	PIS/Pasep		Regulatory	Service tax	Net revenues
	revenues	and Cofins	ICMS (VAT)	charges (32.2)	(ISSQN)	12.31.2017
Electricity sales to final customers	8,689,516	(749,683)	(2,039,245)	(1,219,055)	-	4,681,533
Residential	2,829,626	(242,916)	(771,902)	(433,080)	-	1,381,728
Industrial	2,382,314	(208,226)	(433,088)	(252,531)	-	1,488,469
Trade, services and other activities	1,908,426	(163,834)	(548,328)	(291,798)	-	904,466
Rural	772,465	(66,314)	(75,137)	(119,645)	-	511,369
Public entities	236,719	(20,322)	(46,506)	(36,418)	-	133,473
Public lighting	244,381	(20,979)	(70,811)	(37,359)	-	115,232
Public service	315,585	(27,092)	(93,473)	(48,224)	-	146,796
Electricity sales to distributors	3,529,770	(300,003)	-	(53,413)	-	3,176,354
Bilateral contracts	1,947,862	(203,994)	-	(30,656)	-	1,713,212
Electric Energy Trade Chamber - CCEE	1,077,943	(45,889)	-	(16,966)	-	1,015,088
CCEAR (auction)	367,970	(38,537)	-	(5,791)	-	323,642
Interest (Note 10.2)	82,160	-	-	-	-	82,160
Quota system	53,835	(11,583)	-	-	-	42,252
Use of the main distribution and transmission grid	6,442,761	(588,291)	(1,488,323)	(748,206)	-	3,617,941
Residential	2,025,400	(189,915)	(572,269)	(252,690)	-	1,010,526
Industrial	1,076,613	(96,059)	(385,725)	(126,842)	-	467,987
Trade, services and other activities	1,310,903	(122,168)	(386,320)	(162,367)	-	640,048
Rural	342,195	(32,056)	(25,811)	(43,365)	-	240,963
Public entities	174,427	(16,355)	(33,384)	(21,922)	-	102,766
Public lighting	167,907	(15,744)	(48,668)	(20,935)	-	82,560
Public service	126,795	(11,889)	(36,146)	(15,816)	-	62,944
Free consumers	663,248	(62,190)	-	(84,633)	-	516,425
Basic network, BN connections, and connection grid	1,387	(130)	-	(177)	-	1,080
Operating and maintenance income - O&M	113,324	(16,733)	-	(7,793)	-	88,798
Interest income (a)	440,562	(25,051)	-	(11,666)	-	403,845
Construction income	868,001	-	-	-	-	868,001
Fair value of assets from the indemnity for the concession	57,080	-	-	-	-	57,080
Telecommunications	426,773	(15,854)	(99,460)	-	(2,507)	308,952
Distribution of piped gas	621,992	(58,959)	(107,912)	-	(306)	454,815
Sectorial financial assets and liabilities result	767,040	(48,214)	-	-	-	718,826
Other operating revenue	171,356	(27,710)	-	-	(2,575)	141,071
Leasing and rent (32.1)	109,230	(17,664)	-	-	-	91,566
Income from rendering of services	30,247	(4,891)	-	-	(2,575)	22,781
Charged service	15,981	(2,584)	-	-	-	13,397
Other income	15,898	(2,571)	-	-	-	13,327
	21,574,289	(1,788,714)	(3,734,940)	(2,020,674)	(5,388)	14,024,573
CCEAR - Agreements for Power Trade on the Regulated Market
(a) Of the total gross revenue from Interest income, R$361,156 refers to the gain on RBSE assets (Note 10.4).

	Gross	PIS/Pasep		Regulatory	Service tax	Net revenues
	revenues	and Cofins	ICMS (VAT)	charges (32.2)	(ISSQN)	12.31.2016
Electricity sales to final customers	9,606,133	(884,681)	(2,426,940)	(1,063,007)	-	5,231,505
Residential	2,841,218	(298,659)	(790,401)	(380,973)	-	1,371,185
Industrial	3,029,411	(273,901)	(674,630)	(284,922)	-	1,795,958
Trade, services and other activities	2,130,228	(194,630)	(622,946)	(247,449)	-	1,065,203
Rural	815,079	(48,216)	(120,854)	(61,557)	-	584,452
Public entities	236,550	(21,881)	(48,148)	(27,986)	-	138,535
Public lighting	229,182	(21,199)	(66,481)	(26,962)	-	114,540
Public service	324,465	(26,195)	(103,480)	(33,155)	-	161,635
Electricity sales to distributors	2,963,349	(239,531)	-	(47,746)	-	2,676,072
Bilateral contracts	1,366,552	(134,439)	-	(23,361)	-	1,208,752
Electric Energy Trade Chamber - CCEE	753,392	(23,116)	-	(12,879)	-	717,397
CCEAR (auction)	673,154	(66,223)	-	(11,508)	-	595,423
Interest (Note 10.2)	96,783	-	-	-	-	96,783
Quota system	73,468	(15,753)	-	-	-	57,715
Use of the main distribution and transmission grid	6,974,829	(575,166)	(1,511,601)	(911,479)	-	3,976,583
Residential	2,060,305	(192,823)	(584,025)	(306,096)	-	977,361
Industrial	1,246,575	(112,443)	(391,804)	(177,993)	-	564,335
Trade, services and other activities	1,409,771	(131,352)	(402,233)	(208,471)	-	667,715
Rural	339,438	(31,752)	(15,451)	(51,196)	-	241,039
Public entities	168,823	(15,800)	(33,369)	(25,224)	-	94,430
Public lighting	167,255	(15,653)	(48,489)	(24,839)	-	78,274
Public service	125,928	(11,786)	(36,230)	(18,703)	-	59,209
Free consumers	398,024	(37,251)	-	(60,242)	-	300,531
Basic network, BN connections, and connection grid	1,494	(140)	-	(226)	-	1,128
Operating and maintenance income - O&M	151,984	(5,456)	-	(8,026)	-	138,502
Interest income (a)	905,232	(20,710)	-	(30,461)	-	854,061
Construction income	1,279,642	-	-	-	-	1,279,642
Fair value of assets from the indemnity for the concession	132,741	-	-	-	-	132,741
Telecommunications	357,361	(13,872)	(79,582)	-	(2,326)	261,581
Distribution of piped gas	647,579	(62,037)	(113,657)	-	-	471,885
Sectorial financial assets and liabilities result	(1,079,662)	-	-	-	-	(1,079,662)
Other operating revenue	179,820	(26,072)	-	-	(2,342)	151,406
Leasing and rent (32.1)	103,793	(15,049)	-	-	-	88,744
Income from rendering of services	32,575	(4,723)	-	-	(2,342)	25,510
Charged service	10,148	(1,471)	-	-	-	8,677
Other income	33,304	(4,829)	-	-	-	28,475
	21,061,792	(1,801,359)	(4,131,780)	(2,022,232)	(4,668)	13,101,753
(a) Of the total gross revenue from Interest income, R$809,639 refers to the gain on RBSE assets (Note 10.4).

	Gross	PIS/Pasep		Regulatory	Service tax	Net revenues
	revenues	and Cofins	ICMS (VAT)	charges (32.2)	(ISSQN)	12.31.2015
Electricity sales to final customers	11,289,201	(1,045,529)	(2,784,289)	(1,712,463)	-	5,746,920
Residential	3,554,995	(330,341)	(850,197)	(569,767)	-	1,804,690
Industrial	3,829,081	(352,086)	(910,291)	(517,248)	-	2,049,456
Trade, services and other activities	2,511,750	(233,626)	(720,302)	(401,855)	-	1,155,967
Rural	546,685	(50,800)	(68,351)	(88,196)	-	339,338
Public entities	273,120	(25,379)	(54,202)	(43,876)	-	149,663
Public lighting	271,036	(25,185)	(79,645)	(43,302)	-	122,904
Public service	302,534	(28,112)	(101,301)	(48,219)	-	124,902
Electricity sales to distributors	4,130,184	(350,796)	-	(71,947)	-	3,707,441
Bilateral contracts	1,160,503	(196,524)	-	(20,301)	-	943,678
Electric Energy Trade Chamber - CCEE	2,159,431	(18,079)	-	(37,774)	-	2,103,578
CCEAR (auction)	793,036	(134,295)	-	(13,872)	-	644,869
Quota system	17,214	(1,898)	-	-	-	15,316
Use of the main distribution and transmission grid	5,879,729	(547,565)	(1,420,129)	(1,523,530)	-	2,388,505
Residential	1,961,163	(183,621)	(547,296)	(523,264)	-	706,982
Industrial	1,280,283	(117,076)	(370,565)	(333,412)	-	459,230
Trade, services and other activities	1,399,336	(130,688)	(388,512)	(372,433)	-	507,703
Rural	300,297	(28,116)	(5,890)	(80,913)	-	185,378
Public entities	161,275	(15,100)	(31,870)	(43,164)	-	71,141
Public lighting	153,826	(14,402)	(44,553)	(41,027)	-	53,844
Public service	111,539	(10,443)	(31,443)	(29,757)	-	39,896
Free consumers	282,241	(26,426)	-	(76,104)	-	179,711
Basic network, BN connections, and connection grid	1,352	(127)	-	(365)	-	860
Operating and maintenance income - O&M	91,772	(11,643)	-	(12,466)	-	67,663
Interest income (a)	136,645	(9,923)	-	(10,627)	-	116,095
Construction income	1,196,324	-	-	-	-	1,196,324
Fair value of assets from the indemnity for the concession	217,713	-	-	-	-	217,713
Telecommunications	277,876	(10,760)	(55,038)	-	(2,151)	209,927
Distribution of piped gas	704,625	(66,877)	(111,349)	-	-	526,399
Sectorial financial assets and liabilities result	858,170	-	-	-	-	858,170
Other operating revenue	119,402	(22,545)	-	-	(2,412)	94,445
Leasing and rent (32.1)	88,008	(16,618)	-	-	-	71,390
Income from rendering of services	17,203	(3,248)	-	-	(2,412)	11,543
Charged service	8,773	(1,656)	-	-	-	7,117
Other income	5,418	(1,023)	-	-	-	4,395
	24,673,224	(2,044,072)	(4,370,805)	(3,307,940)	(4,563)	14,945,844

Revenues from Leases and Rentals

	12.31.2017	12.31.2016	12.31.2015
Equipment and framework	106,790	103,490	87,190
Facilities sharing	2,159	248	547
Real estate	281	55	271
	109,230	103,793	88,008

Receivables from non-cancelable leases

	Less than		Over	Total
	1 year	1 to 5 years	5 years	12.31.2017
Facilities sharing	1,079	5,396	13,622	20,097

Regulatory charges

	12.31.2017	12.31.2016	12.31.2015
Energy Development Account - "CDE Energia" (32.2.1)	718,154	790,117	497,667
Energy Development Account - "CDE Uso" (32.2.1)	708,555	876,361	1,494,630
Other charges - rate flags	420,027	203,671	1,120,218
Research and development and energy efficiency - R&D and EEP	117,390	100,039	126,656
Global Reversion Reserve - RGR quota	46,825	42,887	62,554
Inspection fee	9,723	9,157	6,215
	2,020,674	2,022,232	3,307,940

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33. Operating Costs and Expenses (Tables)

12 Months Ended

Dec. 31, 2017

Operating Costs And Expenses Tables

Operating Costs and Expenses

	Operational costs	Selling expenses	General and administrative expenses	Other operating expenses, net	12.31.2017
Electricity purchased for resale (33.1)	(6,165,450)	-	-	-	(6,165,450)
Charge of the main distribution and transmission grid	(712,030)	-	-	-	(712,030)
Personnel and management (33.2)	(984,011)	(20,435)	(338,898)	-	(1,343,344)
Pension and healthcare plans (Note 25.3)	(175,479)	(2,424)	(59,694)	-	(237,597)
Materials and supplies	(71,535)	(968)	(10,621)	-	(83,124)
Materials and supplies for power electricity	(97,360)	-	-	-	(97,360)
Natural gas and supplies for gas business	(309,542)	-	-	-	(309,542)
Third-party services (33.3)	(386,435)	(18,826)	(116,254)	-	(521,515)
Depreciation and amortization	(686,007)	(16)	(32,070)	(13,506)	(731,599)
Estimated losses, provisions and reversals  (33.4)	122,782	(90,478)	-	(397,843)	(365,539)
Construction cost (33.5)	(1,003,881)	-	-	-	(1,003,881)
Other operating costs and expenses, net (33.6)	(196,942)	(35,903)	(128,138)	(52,967)	(413,950)
	(10,665,890)	(169,050)	(685,675)	(464,316)	(11,984,931)
	Operational costs	Selling expenses	General and administrative expenses	Other operating expenses, net	12.31.2016
Electricity purchased for resale (33.1)	(4,685,604)	-	-	-	(4,685,604)
Charge of the main distribution and transmission grid	(866,243)	-	-	-	(866,243)
Personnel and management (33.2)	(976,027)	(17,314)	(311,077)	-	(1,304,418)
Pension and healthcare plans (Note 25.3)	(192,880)	(2,616)	(64,271)	-	(259,767)
Materials and supplies	(71,747)	(851)	(8,865)	-	(81,463)
Materials and supplies for power electricity	(33,352)	-	-	-	(33,352)
Natural gas and supplies for gas business	(325,413)	-	-	-	(325,413)
Third-party services (33.3)	(369,442)	(53,659)	(127,392)	-	(550,493)
Depreciation and amortization	(664,470)	(31)	(30,290)	(13,505)	(708,296)
Estimated losses, provisions and reversals  (33.4)	(567,112)	(184,610)	-	(16,974)	(768,696)
Construction cost (33.5)	(1,280,745)	-	-	-	(1,280,745)
Other operating costs and expenses, net (33.6)	(201,080)	8,633	(199,250)	(23,159)	(414,856)
	(10,234,115)	(250,448)	(741,145)	(53,638)	(11,279,346)
			General and	Other
	Operational	Selling	administrative	operating
	costs	expenses	expenses	expenses, net	12.31.2015
Electricity purchased for resale (33.1)	(6,032,916)	-	-	-	(6,032,916)
Charge of the main distribution and transmission grid	(919,788)	-	-	-	(919,788)
Personnel and management (33.2)	(863,406)	(15,617)	(289,827)	-	(1,168,850)
Pension and healthcare plans (Note 25.3)	(196,238)	(2,388)	(55,701)	-	(254,327)
Materials and supplies	(66,968)	(748)	(8,986)	-	(76,702)
Materials and supplies for power electricity	(199,323)	-	-	-	(199,323)
Natural gas and supplies for gas business	(1,176,090)	-	-	-	(1,176,090)
Third-party services (33.3)	(365,745)	(41,876)	(111,882)	-	(519,503)
Depreciation and amortization	(600,240)	(35)	(68,558)	(7,639)	(676,472)
Estimated losses, provisions and reversals  (33.4)	66,029	(226,837)	-	(50,021)	(210,829)
Construction cost (33.5)	(1,251,004)	-	-	-	(1,251,004)
Other operating costs and expenses, net (33.6)	(193,627)	4,104	(135,652)	(100,959)	(426,134)
	(11,799,316)	(283,397)	(670,606)	(158,619)	(12,911,938)

Electricity Purchased for Resale

	12.31.2017	12.31.2016	12.31.2015
Purchase of Energy in the Regulated Environment - CCEAR	2,693,976	3,219,900	3,812,509
Electric Energy Trade Chamber - CCEE	1,766,091	535,656	982,388
Itaipu Binacional	1,117,957	1,089,804	1,567,844
Bilateral contracts	766,803	20,006	30,557
Program for incentive to alternative energy sources - Proinfa	217,646	242,910	177,946
Micro and mini generators and repurchase of customers	3,892	561	-
(-) PIS/Pasep/Cofins taxes on electricity purchased for resale	(400,915)	(423,233)	(538,328)
	6,165,450	4,685,604	6,032,916

Personnel and Management

	12.31.2017	12.31.2016	12.31.2015
Personnel
Wages and salaries	806,119	801,789	735,072
Social charges on payroll	266,183	257,519	227,667
Meal assistance and education allowance	119,881	109,999	98,367
Provisions for profit sharing (a)	68,817	64,814	78,462
Compensation - Voluntary termination program/retirement	53,468	44,276	5,443
	1,314,468	1,278,397	1,145,011
Management
Wages and salaries	22,895	20,639	19,027
Social charges on payroll	5,635	5,136	4,645
Other expenses	346	246	167
	28,876	26,021	23,839
	1,343,344	1,304,418	1,168,850
(a) According to Federal Law No. 10,101/2000, State Decree No. 1,978/2007 and State Law No. 16,560/2010.

Third-Party Services

	12.31.2017	12.31.2016	12.31.2015
Maintenance of electrical system	135,265	160,720	160,564
Maintenance of facilities	95,176	90,451	85,192
Communication, processing and transmission of data	94,230	61,317	72,042
Meter reading and bill delivery	49,647	49,462	44,399
Consumer service	29,789	21,000	20,478
Consulting and audit	21,589	41,396	19,120
Other services	95,819	126,147	117,708
	521,515	550,493	519,503

Estimated Losses, Provisions and Reversals

	12.31.2017	12.31.2016	12.31.2015
Provision (reversal) for litigations	386,373	(21,408)	48,499
Provision of impairment of assets
Accounts receivable related to the concession compensation (Note 11.1)	(1,117)	75	-
Credits on sales and purchases of gas (Note 12.2)	(123,586)	87,479	-
Property, plant and equipment (Note 19.9)	1,921	494,023	(66,029)
Allowance for doubtful accounts (Client and Other credits)	90,589	179,908	226,838
Tax credits estimated losses	11,470	23,917	1,521
Estimated losses (reversion) in consortiums	(111)	4,702	-
	365,539	768,696	210,829

Construction Cost

	12.31.2017	12.31.2016	12.31.2015
Third party services	437,788	495,309	504,197
Materials and supplies	387,278	588,414	574,132
Personnel	143,266	135,272	100,299
Others	35,549	61,750	72,376
	1,003,881	1,280,745	1,251,004

Other Operating Costs and Expenses

	12.31.2017	12.31.2016	12.31.2015
Financial offset for the use of water resources	110,971	183,014	155,147
Taxes	87,759	29,443	24,237
Losses in the decommissioning and disposal of assets	58,569	43,496	53,266
Compensation	45,712	89,531	50,541
Leasing and rent (33.6.1)	32,037	35,453	33,961
Advertising and publicity	27,768	37,451	25,867
Result of the change in the investment valuation method	-	(52,107)	-
Result of disposal of investment (Note 16.1)	(28,650)	-	-
Other net costs and expenses	79,784	48,575	83,115
	413,950	414,856	426,134

Leasing and Rents

	12.31.2017	12.31.2016	12.31.2015
Real estate	29,749	29,911	27,830
Others	3,588	6,919	7,434
(-) PIS and Cofins credits	(1,300)	(1,377)	(1,303)
	32,037	35,453	33,961

Commitments from non-cancelable leases and rents

	Less than		Over	Total
	1 year	1 to 5 years	5 years	31.12.2017
Rental of wind farm lands	4,600	29,323	183,141	217,064

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34. Financial Results (Tables)

12 Months Ended

Dec. 31, 2017

Financial Results Tables

Financial Results

	12.31.2017	12.31.2016 Restated	12.31.2015 Restated
Financial income
Arrears charges on bills	191,554	221,673	168,796
Interest and monetary variation of CRC transfer (Note 8.1)	141,923	194,153	217,722
Return on financial investments held for trading	95,221	182,750	139,056
Remuneration of net sectorial assets and liabilities (Note 9.2)	20,493	27,734	121,401
Monetary variation over the Itaipu power purchase	17,777	39,283	25,198
Monetary variation and adjust to present value of accounts
payable related to the concession	10,813	1,116	2,122
Return on financial investments held for sale	19,302	13,497	16,160
Other financial income	202,227	223,730	79,172
	699,310	903,936	769,627
( - ) Financial expenses
Monetary and cambial variation and debt charges	993,970	1,072,875	751,524
Monetary variation and adjust to present value of accounts
payable related to the concession	65,418	90,480	101,072
Interest and monetary variation of CRC transfer (Note 8.1)	51,211	5,235	-
PIS/Pasep/Cofins taxes on interest on capital	45,196	40,607	42,627
Interest on R&D and EEP (Note 27.2)	34,345	41,781	34,060
Remuneration of net sectorial assets and liabilities (Note 9.2)	29,622	13,947	-
Monetary variation over the Itaipu power purchase	12,264	20,597	96,162
Provision for impairment of financial assets	5,372	4,300	99,031
Other financial expenses	210,352	208,770	72,853
	1,447,750	1,498,592	1,197,329
Net	(748,440)	(594,656)	(427,702)

XML

35. Operating Segments (Tables)

12 Months Ended

Dec. 31, 2017

Operating Segments Tables

Assets per Reportable Segment

ASSETS	Electric Energy		TEL	GAS	COM (a)	HOL	Intersegment operations	Total
12.31.2017	GET	DIS
TOTAL ASSETS	17,110,518	11,529,588	1,054,741	632,910	208,369	3,211,162	(584,911)	33,162,377
CURRENT ASSETS	1,461,512	3,609,663	102,002	151,966	187,966	1,035,545	(846,820)	5,701,834
NON-CURRENT ASSETS	15,649,006	7,919,925	952,739	480,944	20,403	2,175,617	261,909	27,460,543
Long term assets	4,037,312	2,167,690	69,543	437,056	17,703	2,019,192	(140,870)	8,607,626
Investments	2,424,081	1,362	-	-	2,457	115,765	26,978	2,570,643
Property, plant and equipment	8,924,508	-	866,489	-	57	38,396	-	9,829,450
Intangible assets	263,105	5,750,873	16,707	43,888	186	2,264	375,801	6,452,824
(a) In 2017, the sale of electric energy became a reportable segment.

ASSETS	Electric Energy		TEL	GAS	HOL	Intersegment operations	Total
12.31.2016 - Restated	GET	DIS
TOTAL ASSETS	15,433,988	10,085,455	856,510	526,477	3,351,656	(373,483)	29,880,603
CURRENT ASSETS	1,122,399	2,588,602	89,471	135,292	941,761	(640,284)	4,237,241
NON-CURRENT ASSETS	14,311,589	7,496,853	767,039	391,185	2,409,895	266,801	25,643,362
Long term assets	3,680,669	1,982,110	79,853	152,676	2,145,759	(136,332)	7,904,735
Investments	2,125,701	1,362	-	-	217,449	-	2,344,512
Property, plant and equipment	8,223,951	-	667,443	-	42,909	-	8,934,303
Intangible assets	281,268	5,513,381	19,743	238,509	3,778	403,133	6,459,812
ASSETS	Electric Energy		TEL	GAS	HOL	Intersegment  operations	Total
01.01.2016 - Restated	GET	DIS
TOTAL ASSETS	13,626,886	10,715,266	769,317	481,303	3,641,088	(390,189)	28,843,671
CURRENT ASSETS	2,126,024	4,155,554	179,898	103,579	873,169	(616,587)	6,821,637
NON-CURRENT ASSETS	11,500,862	6,559,712	589,419	377,724	2,767,919	226,398	22,022,034
Long term assets	1,568,330	1,426,826	59,031	71,016	2,016,463	(189,874)	4,951,792
Investments	1,525,356	1,374	-	-	705,754	-	2,232,484
Property, plant and equipment	8,138,199	-	512,068	-	42,415	-	8,692,682
Intangible assets	268,977	5,131,512	18,320	306,708	3,287	416,272	6,145,076

Statement of Income per Reportable Segment

STATEMENT OF INCOME	Electric Energy			TEL	GAS	COM (a)	HOL	Intersegment operations	Total
	GET		DIS
12.31.2017	GER	TRA
NET OPERATING REVENUES	3,176,811	819,623	9,358,664	380,550	515,563	664,495	-	(891,133)	14,024,573
Net operating revenues - third-parties	2,851,644	640,199	9,324,633	306,473	510,010	664,495	-	(272,881)	14,024,573
Net operating revenues - between segments	325,167	179,424	34,031	74,077	5,553	-	-	(618,252)	-
OPERATING COSTS AND EXPENSES	(1,868,390)	(546,510)	(9,071,359)	(286,363)	(309,213)	(654,445)	(139,784)	891,133	(11,984,931)
Energy purchased for resale	(390,019)	-	(5,717,970)	-	-	(654,026)	-	596,565	(6,165,450)
Charges for use of the main transmission grid	(352,958)	-	(554,805)	-	-	-	-	195,733	(712,030)
Personnel and management	(218,456)	(122,515)	(822,963)	(107,874)	(35,761)	(12,993)	(22,782)	-	(1,343,344)
Pension and healthcare plans	(38,782)	(22,733)	(154,285)	(14,800)	(3,577)	(1,415)	(2,005)	-	(237,597)
Materials and supplies	(12,463)	(4,732)	(60,320)	(2,978)	(1,936)	(27)	(668)	-	(83,124)
Raw materials and supplies for generation	(102,719)	-	-	-	-	-	-	5,359	(97,360)
Natural gas and supplies for gas business	-	-	-	-	(309,542)	-	-	-	(309,542)
Third party services	(120,993)	(24,609)	(347,393)	(67,612)	(22,670)	(1,280)	(15,089)	78,131	(521,515)
Depreciation and amortization	(368,987)	(7,201)	(285,835)	(39,553)	(28,753)	(9)	(1,261)	-	(731,599)
Provision/reversal for litigations	(39,733)	(81,210)	(168,600)	(3,648)	854	(156)	(93,880)	-	(386,373)
Impairment of assets	3,886	-	-	-	123,586	-	(4,690)	-	122,782
Other estimated losses, provisions and reversals	(9,397)	1,107	(83,916)	(8,309)	(1,433)	-	-	-	(101,948)
Construction cost	-	(272,216)	(717,351)	-	(14,314)	-	-	-	(1,003,881)
Other operating costs and expenses, net	(217,769)	(12,401)	(157,921)	(41,589)	(15,667)	15,461	591	15,345	(413,950)
EQUITY IN EARNINGS OF INVESTEES	(5,777)	93,145	-	-	-	(564)	14,935	-	101,739
PROFIT (LOSS) BEFORE FINANCIAL INCOME AND TAX	1,302,644	366,258	287,305	94,187	206,350	9,486	(124,849)	-	2,141,381
Financial income	73,433	13,313	380,597	11,828	38,821	6,515	186,660	(11,857)	699,310
Financial expenses	(565,837)	(123,707)	(343,540)	(30,691)	(64,433)	(322)	(331,077)	11,857	(1,447,750)
OPERATING PROFIT (LOSS)	810,240	255,864	324,362	75,324	180,738	15,679	(269,266)	-	1,392,941
Income Tax and Social Contribution	(191,899)	(30,515)	22,893	(21,272)	(66,785)	(2,638)	15,530	-	(274,686)
NET INCOME (LOSS)	618,341	225,349	347,255	54,052	113,953	13,041	(253,736)	-	1,118,255
(a) In 2017, the sale of electric energy became a reportable segment.

STATEMENT OF INCOME	Electric Energy			TEL	GAS	HOL	Intersegment operations	Total
	GET		DIS
12.31.2016 - Restated	GER	TRA
NET OPERATING REVENUES	2,927,680	1,491,547	8,344,765	325,115	542,822	6,238	(536,414)	13,101,753
Net operating revenues - third-parties	2,618,869	1,406,335	8,313,141	258,794	498,376	6,238	-	13,101,753
Net operating revenues - between segments	308,811	85,212	31,624	66,321	44,446	-	(536,414)	-
OPERATING COSTS AND EXPENSES	(2,032,767)	(605,202)	(8,502,377)	(241,848)	(534,817)	101,251	536,414	(11,279,346)
Energy purchased for resale	(92,050)	-	(4,893,230)	-	-	(9,119)	308,795	(4,685,604)
Charges for use of the main transmission grid	(322,849)	-	(642,753)	-	-	-	99,359	(866,243)
Personnel and management	(208,887)	(116,966)	(804,974)	(101,397)	(32,765)	(39,429)	-	(1,304,418)
Pension and healthcare plans	(43,251)	(24,171)	(163,329)	(18,827)	(3,596)	(6,593)	-	(259,767)
Materials and supplies	(12,768)	(5,017)	(59,178)	(2,044)	(1,768)	(688)	-	(81,463)
Raw materials and supplies for generation	(77,797)	-	-	-	-	-	44,445	(33,352)
Natural gas and supplies for gas business	-	-	-	-	(325,413)	-	-	(325,413)
Third party services	(157,602)	(24,030)	(348,479)	(46,552)	(20,082)	(26,755)	73,007	(550,493)
Depreciation and amortization	(369,352)	(3,697)	(274,180)	(34,645)	(25,251)	(1,171)	-	(708,296)
Provision/reversal for litigations	(1,086)	(9,234)	(128,899)	(4,653)	(1,036)	166,316	-	21,408
Impairment of assets	(494,098)	-	-	-	(87,479)	-	-	(581,577)
Other estimated losses, provisions and reversals	(30,700)	(975)	(171,045)	(2,598)	(3,209)	-	-	(208,527)
Construction cost	-	(406,345)	(849,275)	-	(25,125)	-	-	(1,280,745)
Other operating costs and expenses, net	(222,327)	(14,767)	(167,035)	(31,132)	(9,093)	18,690	10,808	(414,856)
EQUITY IN EARNINGS OF INVESTEES	(55,284)	117,970	-	-	-	103,725	-	166,411
PROFIT (LOSS) BEFORE FINANCIAL INCOME AND TAX	894,913	1,004,315	(157,612)	83,267	8,005	211,214	-	2,044,102
Financial income	130,077	21,339	396,880	13,489	13,551	331,646	(3,046)	903,936
Financial expenses	(617,341)	(108,538)	(401,863)	(23,100)	(14,973)	(335,823)	3,046	(1,498,592)
OPERATING PROFIT (LOSS)	407,649	917,116	(162,595)	73,656	6,583	207,037	-	1,449,446
Income Tax and Social Contribution	(205,027)	(220,512)	(17,851)	(15,324)	(1,632)	(59,344)	-	(519,690)
NET INCOME (LOSS)	202,622	696,604	(180,446)	58,332	4,951	147,693	-	929,756

STATEMENT OF INCOME	Electric Energy			TEL	GAS	HOL	Intersegment operations	Total
	GET		DIS
01.01.2016 - Restated	GER	TRA
NET OPERATING REVENUES	4,264,197	501,387	9,797,855	272,247	1,391,474	-	(1,281,316)	14,945,844
Net operating revenues - third-parties	3,954,296	420,451	9,770,086	207,091	593,920	-	-	14,945,844
Net operating revenues - between segments	309,901	80,936	27,769	65,156	797,554	-	(1,281,316)	-
OPERATING COSTS AND EXPENSES	(2,580,045)	(394,015)	(9,516,397)	(203,878)	(1,360,357)	(138,672)	1,281,426	(12,911,938)
Energy purchased for resale	(309,682)	-	(6,007,222)	-	-	-	283,988	(6,032,916)
Charges for use of the main transmission grid	(294,660)	-	(706,680)	-	-	-	81,552	(919,788)
Personnel and management	(186,385)	(79,873)	(699,891)	(87,393)	(30,715)	(84,593)	-	(1,168,850)
Pension and healthcare plans	(40,325)	(18,477)	(165,635)	(17,516)	(3,264)	(9,110)	-	(254,327)
Materials and supplies	(12,502)	(3,399)	(55,531)	(2,745)	(1,937)	(588)	-	(76,702)
Raw materials and supplies for generation	(996,679)	-	-	-	-	-	797,356	(199,323)
Natural gas and supplies for gas business	-	-	-	-	(1,176,090)	-	-	(1,176,090)
Third party services	(184,228)	(20,476)	(353,773)	(35,900)	(20,282)	(15,472)	110,628	(519,503)
Depreciation and amortization	(369,778)	(3,399)	(243,645)	(31,510)	(21,532)	(6,608)	-	(676,472)
Provision/reversal for litigations	89,726	35,061	(164,615)	(3,742)	(7,744)	2,813	-	(48,501)
Impairment of assets	66,029	-	-	-	-	-	-	66,029
Other estimated losses, provisions and reversals	(122,700)	-	(104,121)	(987)	(549)	(7)	7	(228,357)
Construction cost	-	(287,247)	(896,924)	-	(66,833)	-	-	(1,251,004)
Other operating costs and expenses, net	(218,861)	(16,205)	(118,360)	(24,085)	(31,411)	(25,107)	7,895	(426,134)
EQUITY IN EARNINGS OF INVESTEES	(4,955)	22,853	-	-	-	69,692	-	87,590
PROFIT (LOSS) BEFORE FINANCIAL INCOME AND TAX	1,679,197	130,225	281,458	68,369	31,117	(68,980)	110	2,121,496
Financial income	114,767	33,198	354,626	5,939	14,968	248,350	(2,221)	769,627
Financial expenses	(513,822)	(9,583)	(340,439)	(6,459)	(13,898)	(315,252)	2,124	(1,197,329)
OPERATING PROFIT (LOSS)	1,280,142	153,840	295,645	67,849	32,187	(135,882)	13	1,693,794
Income Tax and Social Contribution	(392,507)	(30,966)	(89,591)	(13,205)	(9,119)	3,159	-	(532,229)
NET INCOME (LOSS)	887,635	122,874	206,054	54,644	23,068	(132,723)	13	1,161,565

Additions to Noncurrent Assets by Reportable Segment

	Electric Energy		TEL	GAS	COM (a)	HOL	TOTAL
12.31.2017	GET	DIS
Property, plant and equipment
Additions	1,077,088	-	238,944	-	7	376	1,316,415
Intangible assets
Additions	3,996	757,709	2,200	13,745	101	635	778,386
(a) In 2017, the sale of electric energy became a reportable segment.

	Electric Energy		TEL	GAS	HOL	TOTAL
12.31.2016	GET	DIS
Property, plant and equipment
Additions	619,964	-	187,313	-	556	807,833
Intangible assets
Additions	3,207	892,693	6,447	25,847	533	928,727

	Electric Energy		TEL	GAS	HOL	TOTAL
01.01.2016	GET	DIS
Property, plant and equipment
Additions	724,538	-	100,998	-	186	825,722
Reversal of estimated losses	56,405	-	-	-	-	56,405
	780,943	-	100,998	-	186	882,127
Intangible assets
Additions	5,343	888,906	4,427	69,592	534	968,802

XML

36. Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2017

Financial Instruments Tables

Fair Value of Financial Instruments

	Note	Level	12.31.2017		12.31.2016 - Restated		01.01.2016 - Restated
			Book value	Fair value	Book value	Fair value	Book value	Fair value
Financial assets
Fair value through profit or loss
Cash and cash equivalents (a)	5	1	1,040,075	1,040,075	982,073	982,073	1,480,727	1,480,727
Bonds and securities (b)	6	1	-	-	3,385	3,385	2,565	2,565
Bonds and securities (b)	6	2	7,172	7,172	125,294	125,294	221,889	221,889
			1,047,247	1,047,247	1,110,752	1,110,752	1,705,181	1,705,181
Loans and receivables
Pledges and restricted deposits linked (a)		1	59,372	59,372	1,294	1,294	2,000	2,000
Trade accounts receivable (a)	7	1	2,994,322	2,994,322	2,488,141	2,488,141	3,107,889	3,107,889
CRC Transferred to the State Government of Paraná (d)	8	2	1,516,362	1,620,212	1,522,735	1,610,269	1,383,242	1,343,497
Sectorial financial assets (a)	9	1	343,218	343,218	-	-	1,045,662	1,045,662
Accounts receivable related to the concession (e)	10	1	3,219,437	3,219,437	2,612,418	2,612,418	943,473	943,473
Accounts receivable related to the concession - bonus from the grant (f)	10	2	606,479	694,463	586,706	673,545	-	-
State of Paraná - Government Programs (a)	15.1	1	130,417	130,417	155,141	155,141	187,048	187,048
Mutual - related parties	15.2	1	38,169	38,169	28,968	28,968	-	-
Collaterals and escrow accounts STN (c)	23.1	2	75,665	57,188	73,074	47,166	86,137	51,414
			8,983,441	9,156,798	7,468,477	7,616,942	6,755,451	6,680,983
Available for sale
Bonds and securities (b)	6	1	687	687	1,567	1,567	2,728	2,728
Bonds and securities (b)	6	2	211,804	211,804	201,499	201,499	158,449	158,449
Accounts receivable related to the concession (g)	10	3	684,206	684,206	614,806	614,806	424,140	424,140
Accounts receivable related to the concession compensation (h)	11	3	68,859	68,859	67,401	67,401	219,556	219,556
Other temporary investments (i)	16	1	8,958	8,958	408,297	408,297	17,626	17,626
Other temporary investments (i)	16	2	9,769	9,769	-	-	-	-
			984,283	984,283	1,293,570	1,293,570	822,499	822,499
Total financial assets			11,014,971	11,188,328	9,872,799	10,021,264	9,283,131	9,208,663
Financial liabilities
Other financial liabilities
Sectorial financial liabilities (a)	9	1	283,519	283,519	278,992	278,992	-	-
Ordinary financing of taxes with the federal tax authorities (c)	13.3	2	148,845	142,702	198,527	183,573	193,739	171,119
Special Tax Regularization Program - Pert (c)	13.3	2	533,671	431,036	-	-	-	-
Suppliers (a)	22	1	1,727,046	1,727,046	1,292,350	1,292,350	1,619,049	1,619,049
Loans and financing (c)	23	2	3,759,505	3,569,856	4,046,293	3,677,926	4,077,060	3,539,257
Debentures (j)	24	1	6,070,978	6,070,978	4,790,809	4,790,809	3,683,928	3,683,928
Payable related to concession (k)	28	3	554,954	645,904	565,542	640,839	535,665	651,403
Total financial liabilities			13,078,518	12,871,041	11,172,513	10,864,489	10,109,441	9,664,756
Different levels are defined as follow s:
Level 1: Obtained from quoted prices (not adjusted) in active markets for identical assets and liabilities;
Level 2: obtained through other variables in addition to quoted prices included in Level 1, which are observable for the assets or liabilities;
Level 3: obtained through assessment techniques which include variables for the assets or liabilities, which however are not based on observable market data.

Credit Risk

Exposure to credit risk	12.31.2017	12.31.2016 Restated	01.01.2016 Restated
Cash and cash equivalents (a)	1,040,075	982,073	1,480,727
Bonds and securities (a)	219,663	331,745	385,631
Pledges and restricted deposits linked (a)	135,037	74,368	88,137
Trade accounts receivable (b)	2,994,322	2,488,141	3,107,889
CRC Transferred to the State Government of Paraná (c)	1,516,362	1,522,735	1,383,242
Sectorial financial assets (d)	343,218	-	1,045,662
Accounts receivable related to the concession (e)	3,903,643	3,227,224	1,367,613
Accounts receivable related to the concession - Bonus from the grant (f)	606,479	586,706	-
Accounts receivable related to the concession compensation (g)	68,859	67,401	219,556
State of Paraná - Government Programs (h)	130,417	155,141	187,048
Mutual - related parties	38,169	28,968	-
Other temporary investments (i)	18,727	408,297	17,626
	11,014,971	9,872,799	9,283,131

Liquidity Risk

	Interest (a)	Less than	1 to 3	3 months		Over	Total
		1 month	months	to 1 year	1 to 5 years	5 years	liabilities
12.31.2017
Loans and financing	Note 23	67,457	150,634	775,871	2,429,424	1,340,528	4,763,914
Debentures	Note 24	16,985	22,149	1,923,880	5,160,164	453,807	7,576,985
Payable related to concession	Rate of return +
use of public property	IGP-M and IPCA	5,429	10,859	49,777	293,984	1,455,541	1,815,590
Suppliers	-	1,305,653	174,478	143,558	103,357	-	1,727,046
Ordinary financing of taxes
with the federal tax authorities	Selic	5,535	11,141	51,261	89,860	-	157,797
Pert	Selic	3,693	7,445	34,469	214,111	509,027	768,745
Sectorial financial liabilities	Selic	16,159	32,583	151,095	100,805	-	300,642
		1,420,911	409,289	3,129,911	8,391,705	3,758,903	17,110,719
12.31.2016
Loans and financing	Note 23	90,265	164,214	1,588,764	1,873,952	1,556,703	5,273,898
Debentures	Note 24	8,725	19,929	1,545,694	4,147,064	583,869	6,305,281
Payable related to concession	Rate of return +
use of public property	IGP-M and IPCA	5,494	10,988	50,331	300,343	1,850,518	2,217,674
Suppliers	-	1,106,430	21,619	124,060	40,239	2	1,292,350
Ordinary financing of taxes
with the federal tax authorities	Selic	5,133	10,392	48,578	161,534	-	225,637
Sectorial financial liabilities	Selic	13,071	26,537	125,315	144,590	-	309,513
		1,229,118	253,679	3,482,742	6,667,722	3,991,092	15,624,353
(a) Effective interest rate - weighted average.

Sensitivity Analysis of Foreign Currency Risk

.		Baseline	Projected scenarios - Dec.2018
Foreign exchange risk	Risk	12.31.2017	Probable	Scenario 1	Scenario 2
.
Financial assets
Collaterals and escrow accounts - STN	USD depreciation	75,665	(183)	(19,053)	(37,924)
.		75,665	(183)	(19,053)	(37,924)
Financial liabilities
Loans and financing - STN	USD appreciation	(89,270)	216	(22,048)	(44,311)
Suppliers
Eletrobras (Itaipu)	USD appreciation	(215,761)	522	(53,288)	(107,098)
Acquisition of gas	USD appreciation	(27,001)	65	(6,669)	(13,403)
		(332,032)	803	(82,005)	(164,812)

Sensitivity Analysis of Interest Rate and Monetary Variation Risk

	Risk	Baseline 12.31.2017	Projected scenarios - Dec.2018
Interest rate risk and monetary variation			Probable	Scenario 1	Scenario 2
.
Financial assets
Bonds and securities	Low CDI/SELIC	219,663	14,827	11,115	7,424
Collaterals and escrow accounts	Low CDI/SELIC	59,372	4,008	3,005	2,006
CRC transferred to the State Government of Paraná	Low IGP-DI	1,516,362	68,236	51,177	34,118
Sectorial financial assets	Low Selic	343,218	23,167	17,375	11,584
Accounts receivable related to the concession	Low IPCA	4,510,122	169,981	127,486	84,991
Accounts receivable related to the concession compensation	Undefined (a)	68,859	-	-	-
State of Paraná - Government Programs	No risk	130,417	-	-	-
Mutual - related parties	No risk	38,169	-	-	-
		6,886,182	280,219	210,158	140,123
Financial liabilities
Loans and financing
Banco do Brasil	High CDI	(1,165,123)	(78,646)	(98,307)	(117,969)
BNDES	High TJLP	(1,510,327)	(101,947)	(127,434)	(152,921)
Promissory notes	High CDI	(529,919)	(35,770)	(44,712)	(53,654)
Banco do Brasil - Distribution of Funds from BNDES	High TJLP	(118,373)	(7,990)	(9,988)	(11,985)
Caixa Econômica Federal	High TJLP	(498)	(34)	(42)	(50)
Other	No risk	(345,995)	-	-	-
Debentures	High CDI/SELIC	(5,358,247)	(361,682)	(452,102)	(542,523)
Debentures	High IPCA	(545,967)	(21,511)	(26,889)	(32,267)
Debentures	High TJLP	(166,764)	(11,257)	(14,071)	(16,885)
Suppliers - renegotiation of gas	High IGP-M	(73,076)	(3,332)	(4,165)	(4,998)
Sectorial financial liabilities	High Selic	(283,519)	(19,138)	(23,922)	(28,706)
Ordinary financing of taxes with the federal tax authorities	High Selic	(148,845)	(10,079)	(12,599)	(15,118)
Pert	High Selic	(533,671)	(35,991)	(44,989)	(53,986)
Payable related to concession	High IGP-M	(507,560)	(23,145)	(28,931)	(34,717)
Payable related to concession	High IPCA	(47,394)	(1,867)	(2,334)	(2,801)
.		(11,335,278)	(712,389)	(890,485)	(1,068,580)
(a) Risk assessment still requires ruling by the Granting Authority.

Deadline for Manifestation

Plant	Deadline for manifestation
HPP Gov. Bento Munhoz da Rocha Neto (Foz do Areia)	09.17.2018
HPP Apucaraninha	10.12.2020
HPP Chaminé	08.16.2021
HPP Guaricana	08.16.2021

Targets Set

		Quality (Limit Established) (a)		Quality (Performed)
Year	Economic and Financial Management	DECi (b)	FECi (b)	DECi (c)	FECi (c)
2016		13.61	9.24	10.80	7.14
2017	EBITDA ≥ 0	12.54	8.74	10.41	6.79
2018	EBITDA (-) QRR ≥ 0 (d)	11.23	8.24	-	-
2019	{Net Debt / [EBITDA (-) QRR]} ≤ 1 / (0.8 * SELIC) (d) (e)	10.12	7.74	-	-
2020	{Net Debt / [EBITDA (-) QRR]} ≤ 1 / (1.11 * SELIC) (d) (e)	9.83	7.24	-	-
(a) According to Aneel’s Technical Note No. 0335/2015.
(b) DECi - Equivalent Time of Interruption Caused by Internal Source per Consumer Unit; and FECi - Equivalent Frequency of Interruption Caused by Internal Source per Consumer Unit.
(c) The DECi and FECi indicators are calculated by ANEEL and the performed data were not officially released for the year 2017
(d) QRR: Regulatory Reintegration Quota or Regulatory Depreciation Expense. This is the value defined in the most recent Periodical Tariff Review (RTP), plus the General Market Price Index (IGP-M) between the month preceding the RTP and the month preceding the twelve-month period of the economic and financial sustainability measurement.
(e) Selic: limited to 12.87% p.y.

Capital Monitored by Index

	12.31.2017	12.31.2016 Restated	12.31.2015 Restated
Loans and financing	3,759,505	4,046,293	4,077,060
Debentures	6,070,978	4,790,809	3,683,928
Ordinary financing of taxes with the federal tax authorities	-	-	193,739
Endorsement and securities	-	1,373,064	1,282,290
(-) Cash and cash equivalents	(1,040,075)	(982,073)	(1,480,727)
(-) Bonds and securities (current)	(1,341)	(136,649)	(294,514)
Collaterals and escrow accounts	-	-	2,000
(-) Bonds and securities - held for sale and held for trading (noncurrent)	(112,604)	(188,461)	(43,138)
(-) Collaterals and escrow accounts STN	(75,665)	(73,074)	(86,137)
Adjusted net debt	8,600,798	8,829,909	7,334,501
Net income	1,118,255	874,472	1,161,565
Equity in earnings of investees	(101,739)	-	(87,590)
Deferred IRPJ and CSLL	(105,257)	(69,632)	(165,794)
Provision for IRPJ and CSLL	379,943	589,322	698,023
Financial expenses (income), net	748,440	594,656	427,702
Depreciation and amortization	731,599	708,296	676,472
Adjusted ebitda	2,771,241	2,697,114	2,710,378
Adjusted net debt / Adjusted ebitda	3.10	3.27	2.71

Equity Indebtedness

Indebtedness	12.31.2017	12.31.2016 Restated	01.01.2016 Restated
Loans and financing	3,759,505	4,046,293	4,077,060
Debentures	6,070,978	4,790,809	3,683,928
(-) Cash and cash equivalents	1,040,075	982,073	1,480,727
(-) Bonds and securities (current)	1,341	136,649	294,514
Net debt	8,789,067	7,718,380	5,985,747
Equity	15,510,503	14,978,142	14,480,492
Equity indebtedness	0.57	0.52	0.41

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37. Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2017

Related Party Transactions Tables

Related Party Transactions

	Assets		Liabilities		Revenue			Cost / Expense
Related parties / Nature of operation	12.31.2017	12.31.2016	12.31.2017	12.31.2016	12.31.2017	12.31.2016	12.31.2015	12.31.2017	12.31.2016	12.31.2015
Controlling shareholder
State of Paraná - dividends payable	-	-	85,710	83,786	-	-	-	-	-	-
CRC Transfer (Note 8)	1,516,362	1,522,735	-	-	90,712	188,918	217,722	-	-	-
"Luz Fraterna" Program (a)	168,405	167,674	-	-	-	-	-	-	-	-
2014 World Cup construction work (Note 15.1.2)	14,266	14,266	-	-	-	-	-	-	-	-
Morar Bem Paraná Program (Note 15.1.3)	261	24,985	-	-	1,165	5,502	19,482	-	-	-
Remuneration and employ social security charges assigned (b)	56	302	-	-	-	-	-	-	-	-
Telecommunication services (c)	28,750	48,794	-	-	40,396	29,763	29,456	-	-	-
Sistema Meteorológico do Paraná - Simepar (d)	-	-	-	164	-	-	-	(1,752)	(1,799)	-
.
Entities with significant influence
BNDES and BNDESPAR - dividends payable (e)	-	-	59,366	57,218	-	-	-	-	-	-
Financing (Note 23)	-	-	1,576,660	1,692,775	-	-	-	(140,537)	(149,794)	(120,982)
Debentures - Compagás (Note 24)	-	-	42,675	61,786	-	-	-	(5,242)	(2,883)	(3,347)
Debentures - wind farms (f)	-	-	281,448	295,188	-	-	-	(30,540)	(14,415)	-
State of Paraná investee
Sanepar (c) (g)	24	32	-	-	3,699	3,319	2,886	(1,783)	(1,455)	(1,409)
Dividends	12,095	16,817	-	-	-	-		-	-	-
Joint ventures
Voltalia São Miguel do Gostoso - mutual (Note 15.2)	38,169	28,968	-	-	3,513	3,509	3,260	-	-	-
Dividends	1,032	1,032	-	-	-	-	-	-	-	-
Costa Oeste Transmissora de Energia (h) (i) (j) (n)	206	72	59	73	1,034	848	726	(2,136)	(3,072)	(3,815)
Marumbi Transmissora de Energia  (h) (j) (n)	500	285	37	55	3,690	4,085	1,264	(756)	(900)	(346)
					-			-
Caiuá Transmissora de Energia  (h) (i) (j)	320	308	271	356	3,792	2,066	914	(13,700)	(15,595)	(14,481)
Dividends	1,991	1,991	-	-	-	-	-	-	-	-
Integração Maranhense Transmissora (h) (j)	-	-	43	76	-	-	-	(1,468)	(1,910)	(1,878)
Dividends	4,012	4,012	-	-	-	-	-	-	-	-
Matrinchã Transmissora de Energia (h) (j)	-	-	220	326	-	-	-	(6,636)	(4,043)	(444)
Dividends	36,840	23,213	-	-	-	-	-	-	-	-
Transmissora Sul Brasileira (h) (j)	-	-	72	149	-	-	-	(2,590)	(3,593)	(2,952)
Guaraciaba Transmissora de Energia (h) (j)	-	-	74	173	-	-	-	(3,202)	(966)
Dividends	11,541	5,512	-	-	-	-	-	-	-	-
Paranaíba Transmissora de Energia (j)	-	-	159	-	-	-	-	(3,642)	(283)	-
Dividends	7,093	3,051	-	-	-	-	-	-	-	-
Cantareira Transmissora de Energia  - dividends	2,146	1,224	-	-	-	-	-	-	-	-
Mata de Santa Genebra Transmissão - dividends	3,264	-	-	-	-	-	-	-	-	-
Associates
Dona Francisca Energética S.A. (k)	-	-	1,436	1,436	-	-	-	(17,031)	(16,949)	(30,556)
.
Foz do Chopim Energética Ltda. (c) (h)	163	161	-	-	2,063	2,178	1,913	-	-	-
Sercomtel S.A. Telecomunicações (c) (l)	3,778	3,430	-	-	8,153	8,210	5,788	(4)	(6)	(6)
.
Key management staff
Fees and social security charges (Note 33.2)	-	-	-	-	-	-	-	(28,876)	(26,021)	(23,839)
Pension and healthcare plans (Note 25)	-	-	-	-	-	-	-	(1,690)	(1,403)	(2,380)
Other related parties
Fundação Copel  (c)	38	52	-	-	316	305	292	-	-	-
Administrative property rental	-	-	349	340	-	-	-	(16,347)	(13,519)	(15,390)
Pension and healthcare plans (Note 25)	-	-	866,103	769,865	-	-	-	-	-	-
.
Lactec (m)	-	-	1,762	1,743	-	-	-	(15,912)	(12,911)	(14,752)

Sureties and Guarantees Granted

								Amount
			Date	Final	Amount	Balance	Interest	endorsement/
	Company	Operation	issued	maturity	approved	12.31.2017	%	security
(1)	Caiuá Transmissora	Financing	12.23.2013	02.15.2029	84,600	71,508	49.0	35,039
(2)	Guaraciaba Transmissora	Financing	09.28.2016	01.15.2031	440,000	421,433	49.0	206,502
(3)	Integração Maranhense	Financing	12.30.2013	02.15.2029	142,150	116,995	49.0	57,328
(4)	Mata de Santa Genebra	Financing	11.30.2017	07.15.2033	1,018,500	703,897	50.1	352,652
(5)	Matrinchã Transmissora	Financing	12.27.2013	05.15.2029	691,440	567,796	49.0	278,220
(6)	Matrinchã Transmissora	Debentures	05.15.2016	06.15.2029	180,000	193,088	49.0	94,613
(7)	Paranaíba Transmissora	Financing	10.21.2015	10.15.2030	606,241	582,452	24.5	142,701
(8)	Paranaíba Transmissora	Debentures	01.15.2017	03.15.2028	120,000	109,644	24.5	26,863
(9)	Voltalia São Miguel do Gostoso Part. S.A. (a)	Debentures	01.15.2016	12.15.2028	57,000	53,328	49.0	26,131
(10)	Usina de Energia Eólica Carnaúba S.A. (a)	Financing	08.24.2015	11.15.2031	74,000	53,975	49.0	26,448
(11)	Usina de Energia Eólica Reduto S.A. (a)	Financing	08.24.2015	11.15.2031	70,000	53,969	49.0	26,445
(12)	Usina de Energia Eólica Santo Cristo S.A. (a)	Financing	08.24.2015	11.15.2031	74,000	50,605	49.0	24,796
(13)	Usina de Energia Eólica São João S.A. (a)	Financing	08.24.2015	11.15.2031	68,000	51,425	49.0	25,198
(14)	Cantareira Transmissora de Energia	Financing	12.28.2016	09.15.2032	426,834	439,192	49.0	215,204
								1,538,140
(a) Subsidiaries of Voltália São Miguel do Gostoso I Participações S.A.
Financial institution (fund provider):
BNDES: (1) (2) (3) (4) (5) (7) (10) (11) (12) (13) (14)
Allocation:
Investment Program and/or Working capital.
Endorsement/Security:
Provided by Copel Geração e Transmissão: (1) (3);
Provided by Copel: (2) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14)
Securities offered for the transaction:
Pledge of shares of Copel Geração e Transmissão proportional to the interest in projects.

Performance Bonds

Performance bond	Final	Amount	% endorsement	Amount
Company	maturity	Insured	Copel GeT	endorsement
Matrinchã Transmissora	03.31.2019	90,000	49.0	44,100
Guaraciaba Transmissora	04.30.2019	47,000	49.0	23,030
Paranaíba Transmissora	07.26.2018	48,000	24.5	11,760
Mata de Santa Genebra	05.26.2018	78,300	50.1	39,228
Cantareira Transmissora	11.30.2018	31,200	49.0	15,288
				133,406

XML

38. Commitments (Tables)

12 Months Ended

Dec. 31, 2017

Commitments Tables

Commitments related to long-term contracts

	12.31.2017
Energy purchase and transportation contracts	118,588,046
Additions to property, plant and equipment
Construction of transmission lines and substations	292,601
Construction of HPP Colíder power plant	42,653
Construction of HPP Baixo Iguaçu	193,156
Construction of Cutia wind farm	701,191
Telecommunications works	131,557
Additions to intangible assets	161,337
Gas purchase contracts	54,670

XML

39. Insurance (Tables)

12 Months Ended

Dec. 31, 2017

Insurance Tables

Insurance Policies

	End	Insured
Policy	of term	amount
Nominated Risks	08.24.2018	2,172,442
Operational risks - HPP Governador Jayme Canet Junior	11.23.2018	799,290
Operational risks - UEG Araucária (a)	05.31.2018	725,286
Operational risks - Brisa Potiguar	06.27.2018	720,713
Fire - Company - owned and rented facilities	08.24.2018	597,716
Operational risks - São Bento	06.27.2018	449,928
Legal guarantee - Office of the General Counsel to the National Treasury	05.11.2018	291,396
Multi-risk - Elejor	03.11.2019	197,800
D&O Insurance (a)	03.28.2019	82,700
Aviation insurance (hull and civil liability) (a)	01.30.2019	80,197
(a)  The values of the insured of operating risks - UEG Araucária and Seguro Aeronáutico have been translated from USD into BRL,
with the current rate R$3.3080, as of 12.31.2017.

XML

41. Subsequent Events (Tables)

12 Months Ended

Dec. 31, 2017

Subsequent Events Tables

Revision of physical guarantee

				Installed	Physical guarantee	Physical guarantee
	Installed	Physical		power	(proportional	(proportional
	power	guarantee		(proportional	average MW)	average MW)
Projects	(MW)	(average MW)	Ownership	average MW)	up to 12.31.2017	as from 2018
HPP Gov. José Richa (Salto Caxias)	1240.0	605.6	100%	1240.0	605.0	605.6
HPP Gov. Ney Aminthas de Barros Braga (Segredo)	1260.0	578.5	100%	1260.0	603.0	578.5
HPP Gov. Bento Munhoz da Rocha Netto (Foz do Areia)	1676.0	603.0	100%	1676.0	576.0	603.3
HPP Dona Francisca	125.0	76.0	23%	28.8	18.0	17.5
HPP Santa Clara e HPP Fundão	240.3	133.0	70%	168.2	94.8	93.1
					Net efect	1.2

XML

42. Condensed Unconsolidated Financial Information of Companhia Paranaense de Energia – Copel (Tables)

12 Months Ended

Dec. 31, 2017

Condensed Unconsolidated Financial Information Of Companhia Paranaense De Energia Copel Tables

Condensed Statements of Financial Position

ASSETS	12.31.2017	12.31.2016 Restated	12.31.2015 Restated
Current assets
Cash and cash equivalents	56,833	46,096	25,653
Bonds and securities	90	149	168
Collaterals and escrow accounts	129	128	132
Dividends receivables	459,464	485,263	488,187
CRC transferred to the State Government of Paraná	167,109	-	111,663
Other current receivables	8,287	8,736	13,018
Income tax and social contribution	14,055	41,899	154,077
Other current recoverable taxes	276	197	-
Related parties	292,051	116,020	447
	998,294	698,488	793,345
Noncurrent assets
Other temporary investments	18,727	408,297	-
CRC transferred to the State Government of Paraná	1,349,253	1,522,735	1,271,579
Judicial deposits	119,167	153,932	267,411
Income Tax and Social Contribution	158,808	153,216	79,144
Deferred income tax and social contribution	102,236	47,462	100,919
Other noncurrent recoverable taxes	15	15	15
Related parties	219,426	220,661	297,237
	1,967,632	2,506,318	2,016,305
Investments	14,987,607	13,965,892	14,057,384
Property, Plant and Equipment, net	830	630	455
Intangible Assets	1,603	3,168	3,046
	16,957,672	16,476,008	16,077,190
TOTAL ASSETS	17,955,966	17,174,496	16,870,535
LIABILITIES	12.31.2017	12.31.2016 Restated	12.31.2015 Restated
Current liabilities
Payroll, social charges and accruals	6,977	5,573	15,436
Related parties	3,936	-	-
Suppliers	2,096	2,225	2,602
Income tax and social contribution payable	2,467	-	-
Other taxes due	476	412	32,617
Loans and financing	322,092	453,288	61,788
Debentures	339,341	351,148	19,497
Dividends payable	267,988	256,426	310,020
Post-employment benefits	57	188	21
Other accounts payable	249	579	232
Provisions for legal claims	112,000	-	-
	1,057,679	1,069,839	442,213
Noncurrent liabilities
Other taxes due	2,365	2,075	1,466
Loans and financing	664,020	562,072	969,412
Debentures	876,140	665,951	996,590
Post-employment benefits	3,995	3,517	7,795
Other accounts payable	830	-	-
Provisions for legal claims	143,095	152,944	290,520
	1,690,445	1,386,559	2,265,783
Equity
Attributable to controlling shareholder's
Share capital	7,910,000	7,910,000	6,910,000
Equity valuation adjustments	895,601	998,466	1,177,372
Legal reserves	844,398	792,716	744,784
Retained earnings	5,557,843	5,016,916	5,330,383
	15,207,842	14,718,098	14,162,539
Total liabilities and equity	17,955,966	17,174,496	16,870,535

Condensed Statements of Operations

	12.31.2017	12.31.2016	12.31.2015
		Restated	Restated
Other operating revenues (expenses)
General and administrative expenses	(59,601)	(107,761)	(123,717)
Other operating income	(68,788)	231,651	(3,586)
Equity in earnings of investees	1,291,434	839,853	1,302,435
	1,163,045	963,743	1,175,132
PROFIT BEFORE FINANCIAL RESULTS AND TAXES	1,163,045	963,743	1,175,132
Financial income (expenses)
Financial income	181,312	321,056	245,347
Financial expenses	(327,855)	(334,113)	(314,101)
	(146,543)	(13,057)	(68,754)
Operating profit	1,016,502	950,686	1,106,378
Income tax and social contribution
Income tax and social contribution	(36,803)	(4,882)	(217)
Deferred income tax and social contribution	53,927	(50,032)	3,388
	17,124	(54,914)	3,171
Net income for the period	1,033,626	895,772	1,109,549
Basic and diluted net earning per share attributed do parent company shareholders - in reais
Common shares	3.6075	3.1265	3.8726
Class A preferred shares	3.9683	3.4390	4.2599
Class B preferred shares	3.9683	3.4390	4.2597

Condensed Statements of Comprehensive Income

	12.31.2017	12.31.2016 Restated	12.31.2015 Restated
NET INCOME	1,033,626	895,772	1,109,549
Other comprehensive income
Items that will never be reclassified to profit or loss
Gain (losses) on actuarial liabilities
Post-employment benefits	18	6,460	2,050
Post-employment benefits - equity	(29,567)	(63,913)	289,082
Taxes on other comprehensive income	(7)	(2,196)	(696)
Items that may be reclassified to profit or loss
Adjustments related to financial assets classified as available for sale	11,661	3,612	412
Adjustments related to financial assets classified as available for sale - equity	9,554	-	-
Taxes on other comprehensive income	(3,965)	(1,229)	1
Realization - gain on financial assets, net of taxes	(9,355)	-	-
Realization - gain on financial assets - equity	(9,554)	-	-
Total comprehensive income, net of taxes	(31,215)	(57,266)	290,849
TOTAL COMPREHENSIVE INCOME	1,002,411	838,506	1,400,398

Condensed Statements of Cash Flows

	12.31.2017	12.31.2016	12.31.2015
Net cash generated from operating activities	440,406	1,905,189	1,455,819
Cash flow from investing activities
Financial investments	24	23	(148)
Loans and financing granted to related parties	(251,856)	(87,272)	(36,800)
Receipt of loans and financing granted to related parties	124,122	5,112	15,359
Disposal of investments	397,572	-	-
Additions in investments	(574,347)	(1,489,563)	(1,235,576)
Capital reduction of investees.	170,000	-	-
Additions to property, plant and equipment	(282)	(224)	(134)
Additions to intangible	(499)	(122)	(292)
Net cash generated from (used in) investing activities	(135,266)	(1,572,046)	(1,257,591)
Cash flow from financing activities
Loans and financing obtained from third parties	77,000	-	640,005
Issue of Debentures	520,000	-	-
Amortization of principal - loans and financing	(83,000)	(6,000)	(606,000)
Amortization of principal - debentures	(333,300)	-	-
Dividends and interest on capital paid	(475,103)	(306,700)	(241,442)
Net cash used in financing activities	(294,403)	(312,700)	(207,437)
Total effects on cash and cash equivalents	10,737	20,443	(9,209)
Cash and cash equivalents at the beginning of the period	46,096	25,653	34,862
Cash and cash equivalents at the end of the period	56,833	46,096	25,653
Change in cash and cash equivalents	10,737	20,443	(9,209)

Restatement of Comparative Balances

12.31.2016	As previously stated	Adjustments	Restated
STATEMENTS OF FINANCIAL POSITION
Assets	17,320,563	(146,067)	17,174,496
Noncurrent assets	16,622,075	(146,067)	16,476,008
Investments	14,111,959	(146,067)	13,965,892
Liabilities	17,320,563	(146,067)	17,174,496
Equity	14,864,165	(146,067)	14,718,098
Attributable to controlling shareholder's	14,864,165	(146,067)	14,718,098
Profit retention reserve	5,162,983	(146,067)	5,016,916
STATEMENTS OF INCOME
Operational expenses / income	1,026,621	(62,878)	963,743
Equity in earnings of investees	902,731	(62,878)	839,853
Profit before financial results and taxes	1,026,621	(62,878)	963,743
Financial results	(13,057)	-	(13,057)
Operating profit	1,013,564	(62,878)	950,686
Income tax and social contribution	(54,914)	-	(54,914)
Net income	958,650	(62,878)	895,772
STATEMENTS OF COMPREHENSIVE INCOME
Total comprehensive income, net of taxes	(57,266)	-	(57,266)
comprehensive income	901,384	(62,878)	838,506

12.31.2015	As previously stated	Adjustments	Restated
STATEMENTS OF FINANCIAL POSITION
Assets	16,953,724	(83,189)	16,870,535
Noncurrent assets	16,160,379	(83,189)	16,077,190
Investments	14,140,573	(83,189)	14,057,384
Liabilities	16,953,724	(83,189)	16,870,535
Equity	14,245,728	(83,189)	14,162,539
Attributable to controlling shareholder's	14,245,728	(83,189)	14,162,539
Profit retention reserve	5,413,572	(83,189)	5,330,383
STATEMENTS OF INCOME
Operational expenses / income	1,258,321	(83,189)	1,175,132
Equity in earnings of investees	1,385,624	(83,189)	1,302,435
Profit before financial results and taxes	1,258,321	(83,189)	1,175,132
Financial results	(68,754)	-	(68,754)
Operating profit	1,189,567	(83,189)	1,106,378
Net income	1,192,738	(83,189)	1,109,549
STATEMENTS OF COMPREHENSIVE INCOME
Total comprehensive income, net of taxes	290,849	-	290,849
comprehensive income	1,483,587	(83,189)	1,400,398

Outstanding Balances with Related Parties

	12.31.2017	12.31.2016
Noncurrent assets
Estado do Paraná	130,156	130,156
Copel Distribuição	89,296	90,640
Copel Telecomunicações	5,189	85,421
Eólicas	221,327	-
Structure sharing	27,273	1,496
Voltalia	38,169	28,968
Structure sharing	67	-
Total	511,477	336,681

Investments in Subsidiaries

	12.31.2017	12.31.2016	01.01.2016
		Restated	Restated
Copel Geração e Transmissão	8,409,370	7,966,750	6,843,029
Copel Distribuição	5,452,703	4,805,981	5,603,673
Copel Telecomunicações	483,195	446,155	508,874
Copel Energia	133,511	269,870	252,074
Compagas	202,857	152,811	150,851
UEG Araucária	89,240	89,314	151,471
Other investments	85,549	99,084	84,959
	14,856,425	13,829,965	13,594,931

Dividends Receivable

	12.31.2017	12.31.2016
Investees and subsidiaries
Copel Geração e Transmissão	297,500	261,686
Copel Distribuição	98,967	149,500
Copel Telecomunicações	15,405	28,910
Copel Comercialização	3,717	6,763
Compagas	7,942	600
Elejor	16,838	8,596
UEG Araucária	6,143	6,143
Nova Asa Branca I	114	114
Nova Asa Branca II	157	157
Nova Asa Branca III	75	75
Nova Eurus IV	48	48
Santa Maria	186	186
Santa Helena	214	214
Ventos de Santo Uriel	235	235
Joint Ventures
Voltália	1,032	1,032
Other investments
Sanepar	10,087	20,275
Other investments	804	729
	459,464	485,263

Provisions for Risks

	12.31.2017	12.31.2016
Regulatory	15,042	15,121
Labor	518	18
Civil	135,422	20,578
Tax Claim	104,113	117,227
	255,095	152,944

Restricted Subsidiaries Net Assets

	12.31.2017	12.31.2016	01.01.2016
		Restated	Restated
Copel Geração e Transmissão S.A.	8,409,370	7,966,750	6,843,029
Copel Distribuição S.A.	5,452,703	4,805,981	5,603,673
UEG Araucária Ltda.	446,204	446,576	754,254
Centrais Elétricas Rio Jordão - Elejor	61,727	79,701	74,000
Total	14,370,004	13,299,008	13,274,956

XML

1. Operations (Details) - Subsidiary	12 Months Ended
	Dec. 31, 2017
Disclosure of subsidiaries [line items]
Subsidiary name	Copel Geração e Transmissão S.A. (Copel GeT)
Headquarters	Curitiba/PR
Main activity	Production and transmission of electricity
Interest	100.00%
Investor	Copel
Subsidiary name	Copel Distribuição S.A. (Copel DIS)
Headquarters	Curitiba/PR
Main activity	Distribution and marketing of electricity
Interest	100.00%
Investor	Copel
Subsidiary name	Copel Telecomunicações S.A. (Copel TEL)
Headquarters	Curitiba/PR
Main activity	Telecommunication and communication
Interest	100.00%
Investor	Copel
Subsidiary name	Copel Renováveis S.A. (Copel REN)	[1]
Headquarters	Curitiba/PR
Main activity	Control and management of interests
Interest	100.00%
Investor	Copel
Subsidiary name	Copel Comercialização S.A. (Copel Energia)
Headquarters	Curitiba/PR
Main activity	Commercialization of electricity
Interest	100.00%
Investor	Copel
Subsidiary name	Companhia Paranaense de Gás - Compagás
Headquarters	Curitiba/PR
Main activity	Distribution of pipeline gas
Interest	51.00%
Investor	Copel
Subsidiary name	Elejor - Centrais Elétricas do Rio Jordão S.A.
Headquarters	Curitiba/PR
Main activity	Production of electricity
Interest	70.00%
Investor	Copel
Subsidiary name	Araucária Ltda (UEG)
Headquarters	Curitiba/PR
Main activity	Production of electricity from natural gas
Interest	20.00%
Investor	Copel
Subsidiary name	São Bento Energia, Investimentos e Participações S.A. (São Bento)
Headquarters	Curitiba/PR
Main activity	Control and management of interests
Interest	100.00%
Investor	Copel GeT
Subsidiary name	Nova Asa Branca I Energias Renováveis S.A.
Headquarters	S. Miguel do Gostoso/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Copel GeT
Subsidiary name	Nova Asa Branca II Energias Renováveis S.A.
Headquarters	Parazinho/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Copel GeT
Subsidiary name	Nova Asa Branca III Energias Renováveis S.A.
Headquarters	Parazinho/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Copel GeT
Subsidiary name	Nova Eurus IV Energias Renováveis S.A.
Headquarters	Touros/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Copel GeT
Subsidiary name	Santa Maria Energias Renováveis S.A.
Headquarters	Maracanaú/CE
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Copel GeT
Subsidiary name	Santa Helena Energias Renováveis S.A.
Headquarters	Maracanaú/CE
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Copel GeT
Subsidiary name	Ventos de Santo Uriel S.A.
Headquarters	João Câmara/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Copel GeT
Subsidiary name	Cutia Empreendimentos Eólicos S.A. (Cutia)
Headquarters	Curitiba/PR
Main activity	Control and management of interests
Interest	100.00%
Investor	Copel GeT
Subsidiary name	GE Olho D’Água S.A.
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	São Bento
Subsidiary name	GE Boa Vista S.A.
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	São Bento
Subsidiary name	GE Farol S.A.
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	São Bento
Subsidiary name	GE São Bento do Norte S.A.
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	São Bento
Subsidiary name	Central Geradora Eólica São Bento do Norte I S.A.	[2]
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Subsidiary name	Central Geradora Eólica São Bento do Norte II S.A.	[2]
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Subsidiary name	Central Geradora Eólica São Bento do Norte III S.A.	[2]
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Subsidiary name	Central Geradora Eólica São Miguel I S.A.	[2]
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Subsidiary name	Central Geradora Eólica São Miguel II S.A.	[2]
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Subsidiary name	Central Geradora Eólica São Miguel III S.A.	[2]
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Subsidiary name	Usina de Energia Eólica Guajiru S.A.	[2]
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Subsidiary name	Usina de Energia Eólica Jangada S.A.	[2]
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Subsidiary name	Usina de Energia Eólica Potiguar S.A.	[2]
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Subsidiary name	Usina de Energia Eólica Cutia S.A.	[2]
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Subsidiary name	Usina de Energia Eólica Maria Helena S.A.	[2]
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Subsidiary name	Usina de Energia Eólica Esperança do Nordeste S.A.	[2]
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia
Subsidiary name	Usina de Energia Eólica Paraíso dos Ventos do Nordeste S.A.	[2]
Headquarters	São Bento do Norte/RN
Main activity	Production of electricity from wind sources
Interest	100.00%
Investor	Cutia

[1] Company management is assessing whether a business purpose change or a closure and transfer of assets to the shareholder is required.

[2] Pre-operating stage.

XML

1. Operations (Details 1) - Joint Venture	12 Months Ended
	Dec. 31, 2017
Disclosure of joint ventures [line items]
Joint venture name	Voltalia São Miguel do Gostoso I Participações S.A.
Headquarters	São Paulo/SP
Main activity	Interests in companies
Interest	49.00%
Investor	Copel
Joint venture name	Paraná Gás Exploração e Produção S.A.	[1]
Headquarters	Curitiba/PR
Main activity	Exploration of natural gas
Interest	30.00%
Investor	Copel
Joint venture name	Costa Oeste Transmissora de Energia S.A.
Headquarters	Curitiba/PR
Main activity	Transmission of electricity
Interest	51.00%
Investor	Copel GeT
Joint venture name	Marumbi Transmissora de Energia S.A.
Headquarters	Curitiba/PR
Main activity	Transmission of electricity
Interest	80.00%
Investor	Copel GeT
Joint venture name	Transmissora Sul Brasileira de Energia S.A.
Headquarters	Florianópolis/SC
Main activity	Transmission of electricity
Interest	20.00%
Investor	Copel GeT
Joint venture name	Caiuá Transmissora de Energia S.A.
Headquarters	Rio de Janeiro/RJ
Main activity	Transmission of electricity
Interest	49.00%
Investor	Copel GeT
Joint venture name	Integração Maranhense Transmissora de Energia S.A.
Headquarters	Rio de Janeiro/RJ
Main activity	Transmission of electricity
Interest	49.00%
Investor	Copel GeT
Joint venture name	Matrinchã Transmissora de Energia (TP NORTE) S.A.
Headquarters	Rio de Janeiro/RJ
Main activity	Transmission of electricity
Interest	49.00%
Investor	Copel GeT
Joint venture name	Guaraciaba Transmissora de Energia (TP SUL) S.A.
Headquarters	Rio de Janeiro/RJ
Main activity	Transmission of electricity
Interest	49.00%
Investor	Copel GeT
Joint venture name	Paranaíba Transmissora de Energia S.A.
Headquarters	Rio de Janeiro/RJ
Main activity	Transmission of electricity
Interest	24.50%
Investor	Copel GeT
Joint venture name	Mata de Santa Genebra Transmissão S.A.	[2]
Headquarters	Rio de Janeiro/RJ
Main activity	Transmission of electricity
Interest	50.10%
Investor	Copel GeT
Joint venture name	Cantareira Transmissora de Energia S.A.
Headquarters	Rio de Janeiro/RJ
Main activity	Transmission of electricity
Interest	49.00%
Investor	Copel GeT

[1] Project activities came to a halt in connection with a Public Class Action. Consortium members have requested the National Oil Agency (ANP) a release from contractual obligations without encumbrances to bidders, and eventual return of sign-up bonus, reimbursement of costs incurred and release from guarantees given.

[2] Pre-operating stage.

XML

1. Operations (Details 2) - Associate	12 Months Ended
	Dec. 31, 2017
Disclosure of associates [line items]
Associate name	Dona Francisca Energética S.A.
Headquarters	Agudo/RS
Main activity	Production of electricity
Interest	23.0303%
Investor	Copel
Associate name	Foz do Chopim Energética Ltda.	[1]
Headquarters	Curitiba/PR
Main activity	Production of electricity
Interest	35.77%
Investor	Copel
Associate name	Carbocampel S.A.
Headquarters	Figueira/PR
Main activity	Coal exploration
Interest	49.00%
Investor	Copel
Associate name	Dois Saltos Empreendimentos de Geração de Energia Elétrica Ltda.	[2]
Headquarters	Curitiba/PR
Main activity	Production of electricity
Interest	30.00%
Investor	Copel
Associate name	Copel Amec S/C Ltda. - em liquidação
Headquarters	Curitiba/PR
Main activity	Services
Interest	48.00%
Investor	Copel
Associate name	Sercomtel S.A. Telecomunicações	[3]
Headquarters	Londrina/PR
Main activity	Telecommunications
Interest	45.00%
Investor	Copel
Associate name	Dominó Holdings Ltda.	[4]
Headquarters	Curitiba/PR
Main activity	Interests in companies
Interest	49.00%
Investor	Copel Energia
Associate name	GBX Tietê II Empreendimentos Participações S.A.
Headquarters	São Paulo/SP
Main activity	Incorporation of real estate projects
Interest	19.31%
Investor	UEG

[1] In February 2018, the associated Foz do Chopim Energetica Ltda. was transferred from Copel to Copel GeT, through an increase in the capital stock.

[2] Pre-operating stage.

[3] Investment reduced to zero due to the impairment tests.

[4] In November 2017, the company was transformed from a corporation into a limited liability company and the investment was changed from a joint venture to an associate.

XML

1. Operations (Details 3) - Joint Operation	12 Months Ended
	Dec. 31, 2017
Disclosure of joint operations [line items]
Joint operation name	Hydroelectric Power Plant Gov. Jayme Canet Júnior (Mauá)
Interest	51.00%
Other consortium members	Eletrosul Centrais Elétricas S.A.  (49.0%)
Joint operation name	Hydroelectric Power Plant Baixo Iguaçu (Note 19.7.1)	[1]
Interest	30.00%
Other consortium members	Geração Céu Azul S.A (subsidiary of Neoenergia S.A.) (70%)

[1] Pre-operating stage.

XML

2. Concessions and Authorizations (Details) - Concession Agreement/Authorization	12 Months Ended
	Dec. 31, 2017
Disclosure of detailed information about service concession arrangements [line items]
Concessions agreements or authorizations	Copel DIS, Contract 046/1999, extended by 5th addendum to the contract
Interest	100.00%
Maturity	07.07.2045
Concessions agreements or authorizations	Copel TEL, Authorization Term 54/2003 - Anatel/SVP/PVST
Interest	100.00%
Maturity	Indeterminate
Concessions agreements or authorizations	Copel TEL, Authorization Term 305/2012 - Anatel/SVP/PVST
Interest	100.00%
Maturity	Indeterminate
Concessions agreements or authorizations	Elejor, Contract 125/2001 - HPP Fundão and Santa Clara
Interest	70.00%
Maturity	05.28.2037
Concessions agreements or authorizations	Elejor, Authorization - SHP Fundão I and SHP Santa Clara I - 753/2002 and 757/2002
Interest	70.00%
Maturity	12.18.2032
Concessions agreements or authorizations	Dona Francisca Energética, Contract 188/1998 - HPP Dona Francisca
Interest	23.00%
Maturity	08.27.2033
Concessions agreements or authorizations	Foz do Chopim, Authorization 114/2000 - SHP Arturo Andreoli
Interest	36.00%
Maturity	04.23.2030
Concessions agreements or authorizations	UEG Araucária, Authorization 351/1999  - TPP Araucária (60% Copel GET)
Interest	20.00%
Maturity	12.22.2029
Concessions agreements or authorizations	Compagás (2.1.1), Concession gas distribution contract
Interest	51.00%
Maturity	01.20.2019
Concessions agreements or authorizations	Dois Saltos, Authorization 5,204/2015	[1]
Interest	30.00%
Maturity	04.22.2045
Concessions agreements or authorizations	Paraná Gás (1.1.2 - a), PART-T-300_R12 4861-.0000.99/2014-00 - ANP
Interest	30.00%
Maturity	05.15.2045
Concessions agreements or authorizations	Usina de Energia Eólica São João S.A., MME Ordinance 173 /2012 - WPP São João	[2]
Interest	49.00%
Maturity	03.25.2047
Concessions agreements or authorizations	Usina de Energia Eólica Carnaúba S.A., MME Ordinance 204 /2012 - WPP Carnaúbas	[2]
Interest	49.00%
Maturity	04.08.2047
Concessions agreements or authorizations	Usina de Energia Eólica Reduto S.A., MME Ordinance 230 /2012 - WPP Reduto	[2]
Interest	49.00%
Maturity	04.15.2047
Concessions agreements or authorizations	Usina de Energia Eólica Santo Cristo S.A., MME Ordinance 233/2012 - WPP Santo Cristo	[2]
Interest	49.00%
Maturity	04.17.2047
Concessions agreements or authorizations	Generation Concession 001/2007 - HPP Gov. Jayme Canet Júnior (Mauá)
Interest	51.00%
Maturity	07.02.2042
Concessions agreements or authorizations	Generation concession 001/2011 - HPP Colíder	[1]
Interest	100.00%
Maturity	01.16.2046
Concessions agreements or authorizations	Ordinance 133/2011 - SHP Cavernoso II
Interest	100.00%
Maturity	02.27.2046
Concessions agreements or authorizations	Generation Concession 002/2012 - HPP Baixo Iguaçu	[1]
Interest	30.00%
Maturity	09.13.2049
Concessions agreements or authorizations	HPP Apucaraninha
Interest	100.00%
Maturity	10.12.2025
Concessions agreements or authorizations	HPP Chaminé
Interest	100.00%
Maturity	08.16.2026
Concessions agreements or authorizations	HPP Derivação do Rio Jordão
Interest	100.00%
Maturity	11.15.2029
Concessions agreements or authorizations	HPP Cavernoso
Interest	100.00%
Maturity	01.07.2031
Concessions agreements or authorizations	TPP Figueira
Interest	100.00%
Maturity	03.26.2019
Concessions agreements or authorizations	HPP Gov. Bento Munhoz da Rocha Neto (Foz do Areia)
Interest	100.00%
Maturity	09.17.2023
Concessions agreements or authorizations	HPP São Jorge
Interest	100.00%
Maturity	12.03.2024
Concessions agreements or authorizations	HPP Guaricana
Interest	100.00%
Maturity	08.16.2026
Concessions agreements or authorizations	HPP Gov. Ney Aminthas de Barros Braga (Segredo)
Interest	100.00%
Maturity	11.15.2029
Concessions agreements or authorizations	HPP Gov. José Richa (Salto Caxias)
Interest	100.00%
Maturity	05.04.2030
Concessions agreements or authorizations	Authorization 278/1999 - WPP Palmas
Interest	100.00%
Maturity	09.28.2029
Concessions agreements or authorizations	HGP Salto do Vau (only register with ANEEL)
Interest	100.00%
Maturity	-
Concessions agreements or authorizations	Generation concession 002/2016 - HPP Gov. Pedro Viriato Parigot de Souza (GPS)
Interest	100.00%
Maturity	01.05.2046
Concessions agreements or authorizations	In progress for homologation from ANEEL - HPP Marumbi
Interest	100.00%
Maturity	-
Concessions agreements or authorizations	Authorization Aneel 5,373/2015 - HGP Chopim I (only register with ANEEL)
Interest	100.00%
Maturity	-
Concessions agreements or authorizations	UEG Araucária, Authorization 351/1999 - TPP Araucária (20% - Copel)
Interest	60.00%
Maturity	12.22.2029
Concessions agreements or authorizations	Nova Asa Branca I, MME Ordinance 267/2011 - WPP Asa Branca I
Interest	100.00%
Maturity	04.24.2046
Concessions agreements or authorizations	Nova Asa Branca II, MME Ordinance 333/2011 - WPP Asa Branca II
Interest	100.00%
Maturity	05.30.2046
Concessions agreements or authorizations	Nova Asa Branca III, MME Ordinance 334/2011 - WPP Asa Branca III
Interest	100.00%
Maturity	05.30.2046
Concessions agreements or authorizations	Nova Eurus IV, MME Ordinance 273/2011 -WPP Eurus IV
Interest	100.00%
Maturity	04.26.2046
Concessions agreements or authorizations	Santa Maria, MME Ordinance 274/2012 - WPP SM
Interest	100.00%
Maturity	05.07.2047
Concessions agreements or authorizations	Santa Helena, MME Ordinance 207/2012 - WPP Santa Helena
Interest	100.00%
Maturity	04.08.2047
Concessions agreements or authorizations	Ventos de Santo Uriel, MME Ordinance 201/2012 - WPP Santo Uriel
Interest	100.00%
Maturity	04.08.2047
Concessions agreements or authorizations	GE Boa Vista, MME Ordinance 276 /2011 - WPP Dreen Boa Vista
Interest	100.00%
Maturity	04.27.2046
Concessions agreements or authorizations	GE Farol, MME Ordinance 263 /2011 - WPP Farol
Interest	100.00%
Maturity	04.19.2046
Concessions agreements or authorizations	GE Olho D’Água, MME Ordinance 343 /2011 - WPP Dreen Olho D'Água
Interest	100.00%
Maturity	05.31.2046
Concessions agreements or authorizations	GE São Bento do Norte, MME Ordinance 310 /2011 - WPP Dreen São Bento do Norte
Interest	100.00%
Maturity	05.18.2046
Concessions agreements or authorizations	Esperança do Nordeste, MME Ordinance 183/2015 - WPP Esperança do Nordeste	[1]
Interest	100.00%
Maturity	05.10.2050
Concessions agreements or authorizations	Paraíso dos Ventos do Nordeste, MME Ordinance 182/2015 - WPP Paraíso dos Ventos do Nordeste	[1]
Interest	100.00%
Maturity	05.10.2050
Concessions agreements or authorizations	Usina de Energia Eólica Jangada, Resolution 3,257/2011 - WPP GE Jangada	[1]
Interest	100.00%
Maturity	01.04.2042
Concessions agreements or authorizations	Maria Helena, Resolution 3,259/2011 - WPP GE Maria Helena	[1]
Interest	100.00%
Maturity	01.04.2042
Concessions agreements or authorizations	Usina de Energia Eólica Potiguar, MME Ordinance 179/2015 - WPP Potiguar	[1]
Interest	100.00%
Maturity	05.10.2050
Concessions agreements or authorizations	Usina de Energia Eólica Guajiru, Resolution 3,256/2011 - WPP Dreen Guajiru	[1]
Interest	100.00%
Maturity	01.04.2042
Concessions agreements or authorizations	Usina de Energia Eólica Cutia, Resolution 3,258/2011 - WPP Dreen Cutia	[1]
Interest	100.00%
Maturity	01.04.2042
Concessions agreements or authorizations	São Bento do Norte I, Ordinance 349/2015 - WPP São Bento do Norte I	[1]
Interest	100.00%
Maturity	08.03.2050
Concessions agreements or authorizations	São Bento do Norte II, Ordinance 348/2015 - WPP São Bento do Norte II	[1]
Interest	100.00%
Maturity	08.03.2050
Concessions agreements or authorizations	São Bento do Norte III, Ordinance 347/2015 - WPP São Bento do Norte III	[1]
Interest	100.00%
Maturity	08.03.2050
Concessions agreements or authorizations	São Miguel I, Ordinance 352/2015 - WPP São Miguel I	[1]
Interest	100.00%
Maturity	08.03.2050
Concessions agreements or authorizations	São MigueI lI, Ordinance 351/2015 - WPP São Miguel II	[1]
Interest	100.00%
Maturity	08.03.2050
Concessions agreements or authorizations	São Miguel III, Ordinance 350/2015 - WPP São Miguel III	[1]
Interest	100.00%
Maturity	08.03.2050
Concessions agreements or authorizations	Contract 060/2001 (extended by 3rd addendum to the contract) - Transmission facilities – several joint ventures
Interest	100.00%
Maturity	12.31.2042
Concessions agreements or authorizations	Contract 075/2001 - Transmission line Bateias - Jaguariaíva
Interest	100.00%
Maturity	08.16.2031
Concessions agreements or authorizations	Contract 006/2008 - Transmission line Bateias - Pilarzinho
Interest	100.00%
Maturity	03.16.2038
Concessions agreements or authorizations	Contract 027/2009 - Transmission line Foz do Iguaçu - Cascavel Oeste
Interest	100.00%
Maturity	11.18.2039
Concessions agreements or authorizations	Contract 010/2010 - Transmission line Araraquara 2 - Taubaté	[1]
Interest	100.00%
Maturity	10.05.2040
Concessions agreements or authorizations	Contract 015/2010 - Substation Cerquilho III
Interest	100.00%
Maturity	10.05.2040
Concessions agreements or authorizations	Contract 022/2012 - Transmission line - Foz do Chopim - Salto Osório C2; Transmission line 230 kV Londrina - Figueira
Interest	100.00%
Maturity	08.26.2042
Concessions agreements or authorizations	Contract 002/2013 - Transmission line - Assis - Paraguaçu Paulista II; Substation 230/88 kV Paraguaçu Paulista II
Interest	100.00%
Maturity	02.24.2043
Concessions agreements or authorizations	Contract 005/2014 - Transmission line - Bateias - Curitiba Norte; Substation 230/138 kV Curitiba Norte
Interest	100.00%
Maturity	01.28.2044
Concessions agreements or authorizations	Contract 021/2014 - Transmission line Foz do Chopim - Realeza; Substation Realeza 230/138 kV - Pátio novo 230 kV
Interest	100.00%
Maturity	09.04.2044
Concessions agreements or authorizations	Contract 022/2014 - Transmission line Assis - Londrina
Interest	100.00%
Maturity	09.04.2044
Concessions agreements or authorizations	Contract 006/2016 - Transmission line 525kV Curitiba Leste - Blumenau C1
Interest	100.00%
Maturity	04.06.2046
Concessions agreements or authorizations	Contract 006/2016 - Transmission line 230 kV Uberaba - Curitiba Centro C1 e C2 (Underground)	[1]
Concessions agreements or authorizations	Contract 006/2016 - Substation 230/138 kV Curitiba Centro (SF6) - 230/138 kV - 2 x ATF 150 MVA	[1]
Concessions agreements or authorizations	Contract 006/2016 - Substation 230/138 kV Medianeira (Pátio novo 230 kV) - 2 x 150 MVA	[1]
Concessions agreements or authorizations	Contract 006/2016 - Transmission line 230 kV Baixo Iguaçu - Realeza	[1]
Concessions agreements or authorizations	Contract 006/2016 - Substation 230/138 kV Andirá Leste - 2 x ATR 150 MVA	[1]
Concessions agreements or authorizations	Costa Oeste Transmissora, Contract 001/2012 - Transmission line Cascavel Oeste - Umuarama; Substation Umuarama 230/20138 kV
Interest	51.00%
Maturity	01.11.2042
Concessions agreements or authorizations	Transmissora Sul Brasileira, Contract 004/2012 - Transmission line Nova Santa Rita - Camaquã 3; Transmission line 230 kV Camaquã 3 - Quinta; Transmission line 525 kV Salto Santiago - Itá; Transmission line 525 kV Itá - Nova Santa Rita; Substation Camaquã 3 230/69/2013,8 kV
Interest	20.00%
Maturity	05.09.2042
Concessions agreements or authorizations	Caiuá Transmissora, Contract 007/2012 - Transmission line Umuarama - Guaíra; Transmission line 230 kV Cascavel Oeste - Cascavel Norte; Substation Santa Quitéria 230/69-13,8 kV; Substation Cascavel Norte 230/20138-13,8 kV
Interest	49.00%
Maturity	05.09.2042
Concessions agreements or authorizations	Marumbi Transmissora, Contract 008/2012 - Transmission line Curitiba - Curitiba Leste; Substation Curitiba Leste 525/230 kV
Interest	80.00%
Maturity	05.09.2042
Concessions agreements or authorizations	Integração Maranhense, Contract 011/2012 - Transmission line Açailândia - Miranda II
Interest	49.00%
Maturity	05.09.2042
Concessions agreements or authorizations	Matrinchã Transmissora, Contract 012/2012 - Transmission line Paranaíta - Ribeirãozinho; Transmission line 500 kV Paranaíta - Cláudia; Substation Cláudia 500 kV; Transmission line 500 kV Cláudia - Paranatinga; Substation Paranatinga 500 kV; Transmission line 500 kV Paranatinga - Ribeirãozinho
Interest	49.00%
Maturity	05.09.2042
Concessions agreements or authorizations	Guaraciaba Transmissora, Contract 013/2012 - Transmission line Ribeirãozinho - Marimbondo II; Transmission line 500 kV Ribeirãozinho - Rio Verde Norte; Transmission line 500 Rio Verde Norte - Marimbondo II; Sectioning of Transmission lines 500 kV Marimbondo - Araraquara, at Substation Marimbondo II; Substation Marimbondo II 500 kV
Interest	49.00%
Maturity	05.09.2042
Concessions agreements or authorizations	Paranaíba Transmissora, Contract 007/2013 - Transmission line - T 500 kV Barreiras II - Rio das Éguas; Transmission line 500 kV Rio das Éguas - Luziânia; Transmission line 500 kV Luziânia - Pirapora 2
Interest	24.50%
Maturity	05.01.2043
Concessions agreements or authorizations	Mata de Santa Genebra, Contract 001/2014 - Transmission line - Itatiba - Bateias; Transmission line 500 kV Itatiba - Bateias; Transmission line 500 kV Araraquara 2 - Itatiba; Transmission line 500 kV Araraquara 2 - Fernão Dias; Substation Santa Bárbara D'Oeste 440 kV; Substation Itatiba 500 kV; Substation 500/440 kV Fernão Dias	[1]
Interest	50.10%
Maturity	05.13.2044
Concessions agreements or authorizations	Cantareira Transmissora, Contract 019/2014 - Transmission line - Estreito - Fernão Dias	[1]
Interest	49.00%
Maturity	09.04.2044

[1] Building under construction.

[2] Subsidiaries of Voltalia Sao Miguel do Gostoso I Participacoes S.A.

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2. Concessions and Authorizations (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of detailed information about service concession arrangements [line items]
Accounts receivable related to the concession	R$ 4,510,122	R$ 3,813,930
Intangible assets	6,452,824	R$ 6,459,812	R$ 6,145,076
End of concession in 2024
Disclosure of detailed information about service concession arrangements [line items]
Accounts receivable related to the concession	148,868
Intangible assets	198,688
Fair value of assets from the indemnity for the concession	(197)
Effects
Disclosure of detailed information about service concession arrangements [line items]
Accounts receivable related to the concession	154,800
Intangible assets	(154,800)
Fair value of assets from the indemnity for the concession	41,078
End of concession in 2019
Disclosure of detailed information about service concession arrangements [line items]
Accounts receivable related to the concession	303,668
Intangible assets	43,888
Fair value of assets from the indemnity for the concession	R$ 10,881

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4. Significant Accounting Policies (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
STATEMENTS OF FINANCIAL POSITION
Assets	R$ 33,162,377	R$ 30,288,900	R$ 28,843,671
Current assets	5,701,834	4,237,241	6,821,637
Bonds and securities	1,341	136,649	294,514
Noncurrent assets	27,460,543	26,051,659	22,022,034
Deferred income tax and social contribution	915,492	814,355	537,562
Investments	2,570,643	2,344,512	2,232,484
Liabilities		30,288,900	28,843,671
Noncurrent liabilities	11,541,960	9,654,722	9,574,061
Provisions for legal claims	1,400,064	1,273,338	1,494,936
Equity	15,510,503	14,978,142	14,480,492	R$ 13,682,780
Attributable to controlling shareholder's	15,207,842	14,718,098	14,162,539
Profit retention reserve	5,557,843	5,016,916	5,330,383
Attributable to non-controlling interest	R$ 302,661	260,044	317,953	R$ 352,091
As Previously Stated
STATEMENTS OF FINANCIAL POSITION
Assets		30,434,209	28,947,657
Current assets		4,402,990	6,933,397
Bonds and securities		302,398	406,274
Noncurrent assets		26,031,219	22,014,260
Deferred income tax and social contribution		803,477
Investments		2,334,950	2,224,710
Liabilities		30,434,209	28,947,657
Noncurrent liabilities		9,622,727
Provisions for legal claims		1,241,343
Equity		15,155,446	14,584,478
Attributable to controlling shareholder's		14,864,165	14,245,728
Profit retention reserve		5,162,983	5,413,572
Attributable to non-controlling interest		291,281	338,750
Classification Adjustments
STATEMENTS OF FINANCIAL POSITION
Assets		(145,309)	(103,986)
Current assets		(165,749)	(111,760)
Bonds and securities		(165,749)	(111,760)
Noncurrent assets		20,440	7,774
Deferred income tax and social contribution		10,878
Investments		9,562	7,774
Liabilities		(145,309)	(103,986)
Noncurrent liabilities		31,995
Provisions for legal claims		31,995
Equity		(177,304)	(103,986)
Attributable to controlling shareholder's		(146,067)	(83,189)
Profit retention reserve		(146,067)	(83,189)
Attributable to non-controlling interest		R$ (31,237)	R$ (20,797)

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4. Significant Accounting Policies (Details 1) - BRL (R$) R$ / shares in Units, R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
STATEMENTS OF INCOME
Operational expenses / income	R$ (1,217,302)	R$ (878,820)	R$ (1,025,032)
Equity in earnings of investees	101,739	166,411	87,590
Profit before financial results and taxes	2,141,381	1,988,818	2,121,496
Financial results	(748,440)	(594,656)	(427,702)
Financial income	699,310	903,936	769,627
Financial expenses	(1,447,750)	(1,498,592)	(1,197,329)
OPERATING PROFIT (LOSS)	1,392,941	1,394,162	1,693,794
Income tax and social contribution	(274,686)	(519,690)	(532,229)
INCOME TAX AND SOCIAL CONTRIBUTION, Deferred	105,257	69,632	165,794
Net income	1,118,255	874,472	1,161,565
Attributed to controlling shareholders	1,033,626	895,772	1,109,549
Attributed to non-controlling interest	R$ 84,629	R$ (21,300)	R$ 52,016
Basic and diluted earnings per share attributable to shareholders of parent company:
Ordinary shares	R$ 3.60754	R$ 3.12641	R$ 3.87253
Class "A" Preferred
Basic and diluted earnings per share attributable to shareholders of parent company:
Ordinary shares	3.96830	3.43906	4.25990
Class "B" Preferred
Basic and diluted earnings per share attributable to shareholders of parent company:
Ordinary shares	R$ 3.96830	R$ 3.43906	R$ 4.25979
As Previously Stated
STATEMENTS OF INCOME
Operational expenses / income		R$ (823,536)	R$ (1,020,077)
Equity in earnings of investees		221,695	92,545
Profit before financial results and taxes		2,044,102	2,126,451
Financial results		(565,744)	(328,671)
Financial income		896,553
Financial expenses		(1,462,297)	(1,098,298)
OPERATING PROFIT (LOSS)		1,478,358	1,797,780
Income tax and social contribution		(530,568)
INCOME TAX AND SOCIAL CONTRIBUTION, Deferred		58,754
Net income		947,790	1,265,551
Attributed to controlling shareholders		958,650	1,192,738
Attributed to non-controlling interest		R$ (10,860)	R$ 72,813
Basic and diluted earnings per share attributable to shareholders of parent company:
Ordinary shares		R$ 3.34587	R$ 4.16287
As Previously Stated | Class "A" Preferred
Basic and diluted earnings per share attributable to shareholders of parent company:
Ordinary shares		3.68045	4.57807
As Previously Stated | Class "B" Preferred
Basic and diluted earnings per share attributable to shareholders of parent company:
Ordinary shares		R$ 3.68045	R$ 4.56917
Classification Adjustments
STATEMENTS OF INCOME
Operational expenses / income		R$ (55,284)	R$ (4,955)
Equity in earnings of investees		(55,284)	(4,955)
Profit before financial results and taxes		(55,284)	(4,955)
Financial results		(28,912)	(99,031)
Financial income		7,383
Financial expenses		(36,295)	(99,031)
OPERATING PROFIT (LOSS)		(84,196)	(103,986)
Income tax and social contribution		10,878
INCOME TAX AND SOCIAL CONTRIBUTION, Deferred		10,878
Net income		(73,318)	(103,986)
Attributed to controlling shareholders		(62,878)	(83,189)
Attributed to non-controlling interest		R$ (10,440)	R$ (20,797)
Basic and diluted earnings per share attributable to shareholders of parent company:
Ordinary shares		R$ (0.21946)	R$ (0.29034)
Classification Adjustments | Class "A" Preferred
Basic and diluted earnings per share attributable to shareholders of parent company:
Ordinary shares		(0.24139)	(0.31817)
Classification Adjustments | Class "B" Preferred
Basic and diluted earnings per share attributable to shareholders of parent company:
Ordinary shares		R$ (0.24139)	R$ (0.30938)

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4. Significant Accounting Policies (Details 2) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
STATEMENTS OF COMPREHENSIVE INCOME
Total comprehensive income, net of taxes	R$ (31,338)	R$ (57,201)	R$ 291,344
Comprehensive income	1,086,917	817,271	1,452,909
Attributed to controlling shareholders	1,002,411	838,506	1,400,398
Attributed to non-controlling interest	R$ 84,506	(21,235)	52,511
As Previously Stated
STATEMENTS OF COMPREHENSIVE INCOME
Total comprehensive income, net of taxes		(57,201)	291,344
Comprehensive income		890,589	1,556,895
Attributed to controlling shareholders		901,384	1,483,587
Attributed to non-controlling interest		(10,795)	73,308
Classification Adjustments
STATEMENTS OF COMPREHENSIVE INCOME
Total comprehensive income, net of taxes		0	0
Comprehensive income		(73,318)	(103,986)
Attributed to controlling shareholders		(62,878)	(83,189)
Attributed to non-controlling interest		R$ (10,440)	R$ (20,797)

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4. Significant Accounting Policies (Details 3) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
STATEMENTS OF CHANGES IN EQUITY
Net income	R$ 1,118,255	R$ 874,472	R$ 1,161,565
Equity	R$ 15,510,503	14,978,142	14,480,492	R$ 13,682,780
As Previously Stated
STATEMENTS OF CHANGES IN EQUITY
Net income		947,790	1,265,551
Equity		15,155,446	14,584,478
Classification Adjustments
STATEMENTS OF CHANGES IN EQUITY
Net income		(73,318)	(103,986)
Equity		R$ (177,304)	R$ (103,986)

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4. Significant Accounting Policies (Details 4) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
STATEMENTS OF CASH FLOWS
Cash flows from operational activities	R$ 989,206	R$ 1,476,818	R$ 1,320,728
Net income	1,118,255	874,472	1,161,565
Unrealized monetary and exchange variations - net	900,610	1,171,228	716,228
Deferred income tax and social contribution	(105,257)	(69,632)	(165,794)
Equity in earnings of investees	(101,739)	(166,411)	(87,590)
Cash flows from investment activities	(1,581,173)	(2,511,075)	(1,951,618)
Cash flows from financing activities	649,969	535,603	1,371,486
Change in cash and cash equivalents	R$ 58,002	(498,654)	740,596
As Previously Stated
STATEMENTS OF CASH FLOWS
Cash flows from operational activities		1,476,818	1,320,728
Net income		947,790	1,265,551
Unrealized monetary and exchange variations - net		1,142,316	617,197
Deferred income tax and social contribution		(58,754)
Equity in earnings of investees		(221,695)	(92,545)
Cash flows from investment activities		(2,511,075)	(1,951,618)
Cash flows from financing activities		535,603	1,371,486
Change in cash and cash equivalents		(498,654)	740,596
Classification Adjustments
STATEMENTS OF CASH FLOWS
Cash flows from operational activities		0	0
Net income		(73,318)	(103,986)
Unrealized monetary and exchange variations - net		28,912	99,031
Deferred income tax and social contribution		(10,878)
Equity in earnings of investees		55,284	4,955
Cash flows from investment activities		0	0
Cash flows from financing activities		0	0
Change in cash and cash equivalents		R$ 0	R$ 0

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4. Significant Accounting Policies (Details 5)	12 Months Ended
	Dec. 31, 2017
Bonds and securities
DisclosureOfClassificationsOfFinancialInstrumentsLineItems [Line Items]
Actual classification (IAS 39)	Available for sale
New classification IFRS 9	Fair value through profit or loss
Collaterals and escrow accounts
DisclosureOfClassificationsOfFinancialInstrumentsLineItems [Line Items]
Actual classification (IAS 39)	Loans and receivables
New classification IFRS 9	Amortized cost
Trade accounts receivable
DisclosureOfClassificationsOfFinancialInstrumentsLineItems [Line Items]
Actual classification (IAS 39)	Loans and receivables
New classification IFRS 9	Amortized cost
CRC transferred to the State Government of Paraná
DisclosureOfClassificationsOfFinancialInstrumentsLineItems [Line Items]
Actual classification (IAS 39)	Loans and receivables
New classification IFRS 9	Amortized cost
Sectorial financial assets
DisclosureOfClassificationsOfFinancialInstrumentsLineItems [Line Items]
Actual classification (IAS 39)	Loans and receivables
New classification IFRS 9	Amortized cost
Accounts receivable related to the concession - transmission (amortizable)
DisclosureOfClassificationsOfFinancialInstrumentsLineItems [Line Items]
Actual classification (IAS 39)	Loans and receivables
New classification IFRS 9	Amortized cost
Accounts receivable related to the concession - transmission (indemnable)
DisclosureOfClassificationsOfFinancialInstrumentsLineItems [Line Items]
Actual classification (IAS 39)	Loans and receivables
New classification IFRS 9	Fair value through profit or loss
Accounts receivable related to the concession - bonus from the grant
DisclosureOfClassificationsOfFinancialInstrumentsLineItems [Line Items]
Actual classification (IAS 39)	Loans and receivables
New classification IFRS 9	Amortized cost
Accounts receivable related to the concession - distribution
DisclosureOfClassificationsOfFinancialInstrumentsLineItems [Line Items]
Actual classification (IAS 39)	Available for sale
New classification IFRS 9	Fair value through profit or loss
Accounts receivable related to the concession compensation
DisclosureOfClassificationsOfFinancialInstrumentsLineItems [Line Items]
Actual classification (IAS 39)	Available for sale
New classification IFRS 9	Fair value through profit or loss
State of Paraná - Government Programs
DisclosureOfClassificationsOfFinancialInstrumentsLineItems [Line Items]
Actual classification (IAS 39)	Loans and receivables
New classification IFRS 9	Amortized cost
Other temporary investments
DisclosureOfClassificationsOfFinancialInstrumentsLineItems [Line Items]
Actual classification (IAS 39)	Available for sale
New classification IFRS 9	Fair value through profit or loss

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5. Cash and Cash Equivalents (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
DisclosureOfCashAndCashEquivalentsLineItems [Line Items]
Cash and cash equivalents	R$ 1,040,075	R$ 982,073	R$ 1,480,727	R$ 740,131
Cash and Bank Accounts
DisclosureOfCashAndCashEquivalentsLineItems [Line Items]
Cash and cash equivalents	157,470	173,020
Financial Investments with Immediate Liquidity
DisclosureOfCashAndCashEquivalentsLineItems [Line Items]
Cash and cash equivalents	R$ 882,605	R$ 809,053

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6. Bonds and Securities (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfBondsAndSecuritiesLineItems [Line Items]
Securities available for sale	R$ 212,491	R$ 203,066	R$ 161,177
Securities held for trading	7,172	128,679	224,454
Bonds and securities	219,663	331,745	385,631
Bonds and securities, current	1,341	136,649	294,514
Bonds and securities, noncurrent	R$ 218,322	195,096	91,117
Quotas in Funds
DisclosureOfBondsAndSecuritiesLineItems [Line Items]
Securities available for sale index	CDI
Securities held for trading index	98.1% of CDI
Securities available for sale	R$ 107,560	94,268	64,473
Securities held for trading	R$ 7,172	8,676	100,282
Bank Deposit Certificates - CDB
DisclosureOfBondsAndSecuritiesLineItems [Line Items]
Securities available for sale index	95.0% to 101% of CDI
Securities available for sale	R$ 57,192	50,811	45,996
Committed Operation
DisclosureOfBondsAndSecuritiesLineItems [Line Items]
Securities available for sale index	96.5% to 100% of CDI
Securities held for trading index	Fixed rate
Securities available for sale	R$ 47,052	56,512	48,085
Securities held for trading	R$ 0	58,930	88,594
Financial Treasury Bonds - LFT
DisclosureOfBondsAndSecuritiesLineItems [Line Items]
Securities available for sale index	Selic
Securities available for sale	R$ 687	1,475	2,623
Financial Notes
DisclosureOfBondsAndSecuritiesLineItems [Line Items]
Securities held for trading index	105.38% of CDI
Securities held for trading	R$ 0	51,384	26,025
Time Deposits with Special Guarantee from the Credit Guarantee Fund (FGC) - DPGE
DisclosureOfBondsAndSecuritiesLineItems [Line Items]
Securities held for trading index	106.25% of CDI
Securities held for trading	R$ 0	4,785	4,515
National Treasury Bonds - LTN
DisclosureOfBondsAndSecuritiesLineItems [Line Items]
Securities held for trading index	Selic
Securities held for trading	R$ 0	3,378	2,563
Housing credit
DisclosureOfBondsAndSecuritiesLineItems [Line Items]
Securities held for trading index	-
Securities held for trading	R$ 0	1,390	2,316
Debentures
DisclosureOfBondsAndSecuritiesLineItems [Line Items]
Securities held for trading index	105.11% of CDI
Securities held for trading	R$ 0	129	157
Treasury
DisclosureOfBondsAndSecuritiesLineItems [Line Items]
Securities held for trading index	-
Securities held for trading	R$ 0	R$ 7	R$ 2

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7. Trade Accounts Receivables (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfTradeReceivablesLineItems [Line Items]
Balances falling due	R$ 2,468,471
Overdue up to 90 days	363,771
Overdue for more than 90 days	162,080
Trade accounts receivable	2,994,322	R$ 2,488,141
Trade accounts receivable, current	2,733,240	2,217,355	R$ 3,032,827
Trade accounts receivable, noncurrent	261,082	270,786	R$ 75,062
Customers
DisclosureOfTradeReceivablesLineItems [Line Items]
Balances falling due	1,695,109
Overdue up to 90 days	345,445
Overdue for more than 90 days	228,386
Trade accounts receivable	2,268,940	1,967,632
Customers | Residential
DisclosureOfTradeReceivablesLineItems [Line Items]
Balances falling due	308,315
Overdue up to 90 days	190,376
Overdue for more than 90 days	14,126
Trade accounts receivable	512,817	447,345
Customers | Industrial
DisclosureOfTradeReceivablesLineItems [Line Items]
Balances falling due	314,817
Overdue up to 90 days	37,788
Overdue for more than 90 days	76,722
Trade accounts receivable	429,327	313,963
Customers | Commercial
DisclosureOfTradeReceivablesLineItems [Line Items]
Balances falling due	257,733
Overdue up to 90 days	56,316
Overdue for more than 90 days	26,533
Trade accounts receivable	340,582	267,647
Customers | Rural
DisclosureOfTradeReceivablesLineItems [Line Items]
Balances falling due	55,626
Overdue up to 90 days	19,965
Overdue for more than 90 days	4,940
Trade accounts receivable	80,531	68,611
Customers | Public Entities
DisclosureOfTradeReceivablesLineItems [Line Items]
Balances falling due	40,358
Overdue up to 90 days	9,476
Overdue for more than 90 days	5,992
Trade accounts receivable	55,826	64,581
Customers | Public lighting
DisclosureOfTradeReceivablesLineItems [Line Items]
Balances falling due	37,590
Overdue up to 90 days	81
Overdue for more than 90 days	13
Trade accounts receivable	37,684	28,991
Customers | Public service
DisclosureOfTradeReceivablesLineItems [Line Items]
Balances falling due	37,667
Overdue up to 90 days	1,279
Overdue for more than 90 days	834
Trade accounts receivable	39,780	34,391
Customers | Unbilled
DisclosureOfTradeReceivablesLineItems [Line Items]
Balances falling due	410,086
Overdue up to 90 days	0
Overdue for more than 90 days	0
Trade accounts receivable	410,086	377,498
Customers | Energy installments plan (7.1)
DisclosureOfTradeReceivablesLineItems [Line Items]
Balances falling due	143,720
Overdue up to 90 days	13,722
Overdue for more than 90 days	32,819
Trade accounts receivable	190,261	193,426
Customers | Low income subsidy - Eletrobras
DisclosureOfTradeReceivablesLineItems [Line Items]
Balances falling due	14,435
Overdue up to 90 days	0
Overdue for more than 90 days	0
Trade accounts receivable	14,435	12,128
Customers | Other receivables
DisclosureOfTradeReceivablesLineItems [Line Items]
Balances falling due	74,762
Overdue up to 90 days	16,442
Overdue for more than 90 days	66,407
Trade accounts receivable	157,611	159,051
Concessionaires and Permission holder
DisclosureOfTradeReceivablesLineItems [Line Items]
Balances falling due	556,878
Overdue up to 90 days	3,770
Overdue for more than 90 days	196,938
Trade accounts receivable	757,586	620,036
Concessionaires and Permission holder | Unbilled
DisclosureOfTradeReceivablesLineItems [Line Items]
Balances falling due	31,671
Overdue up to 90 days	0
Overdue for more than 90 days	0
Trade accounts receivable	31,671	28,873
Concessionaires and Permission holder | Energy purchase agreements in the regulated market - CCEAR
DisclosureOfTradeReceivablesLineItems [Line Items]
Balances falling due	69,413
Overdue up to 90 days	694
Overdue for more than 90 days	6,406
Trade accounts receivable	76,513	116,516
Concessionaires and Permission holder | Bilateral contracts
DisclosureOfTradeReceivablesLineItems [Line Items]
Balances falling due	184,793
Overdue up to 90 days	3,027
Overdue for more than 90 days	7,690
Trade accounts receivable	195,510	102,570
Concessionaires and Permission holder | CCEE
DisclosureOfTradeReceivablesLineItems [Line Items]
Balances falling due	260,981
Overdue up to 90 days	0
Overdue for more than 90 days	181,560
Trade accounts receivable	442,541	354,662
Concessionaires and Permission holder | Quota system and Reimbursement to generators
DisclosureOfTradeReceivablesLineItems [Line Items]
Balances falling due	10,020
Overdue up to 90 days	49
Overdue for more than 90 days	1,282
Trade accounts receivable	11,351	17,415
Charges from using transmission grid
DisclosureOfTradeReceivablesLineItems [Line Items]
Balances falling due	151,204
Overdue up to 90 days	3,120
Overdue for more than 90 days	7,696
Trade accounts receivable	162,020	104,831
Telecommunications
DisclosureOfTradeReceivablesLineItems [Line Items]
Balances falling due	31,069
Overdue up to 90 days	12,344
Overdue for more than 90 days	22,356
Trade accounts receivable	65,769	81,374
Gas distribution
DisclosureOfTradeReceivablesLineItems [Line Items]
Balances falling due	37,195
Overdue up to 90 days	2,037
Overdue for more than 90 days	10,605
Trade accounts receivable	49,837	69,934
Allowance for doubtful accounts
DisclosureOfTradeReceivablesLineItems [Line Items]
Balances falling due	(2,984)
Overdue up to 90 days	(2,945)
Overdue for more than 90 days	(303,901)
Trade accounts receivable	R$ (309,830)	R$ (355,666)

XML

7. Trade Accounts Receivables (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
DisclosureOfAllowanceForDoubtfulAccountsLineItems [Line Items]
Allowance for doubtful accounts, beginning	R$ 355,666	R$ 339,686
Additions	90,288	180,387
Reversal or write offs	(136,124)	(164,407)
Allowance for doubtful accounts, ending	309,830	355,666
Customers
DisclosureOfAllowanceForDoubtfulAccountsLineItems [Line Items]
Allowance for doubtful accounts, beginning	217,466	207,894
Additions	79,259	171,314
Reversal or write offs	(128,514)	(161,742)
Allowance for doubtful accounts, ending	168,211	217,466
Customers | Residential
DisclosureOfAllowanceForDoubtfulAccountsLineItems [Line Items]
Allowance for doubtful accounts, beginning	66,502	104,167
Additions	36,177	69,041
Reversal or write offs	(80,147)	(106,706)
Allowance for doubtful accounts, ending	22,532	66,502
Customers | Industrial
DisclosureOfAllowanceForDoubtfulAccountsLineItems [Line Items]
Allowance for doubtful accounts, beginning	66,563	42,176
Additions	26,265	45,552
Reversal or write offs	(14,049)	(21,165)
Allowance for doubtful accounts, ending	78,779	66,563
Customers | Commercial
DisclosureOfAllowanceForDoubtfulAccountsLineItems [Line Items]
Allowance for doubtful accounts, beginning	67,075	48,385
Additions	18,101	49,664
Reversal or write offs	(25,901)	(30,974)
Allowance for doubtful accounts, ending	59,275	67,075
Customers | Rural
DisclosureOfAllowanceForDoubtfulAccountsLineItems [Line Items]
Allowance for doubtful accounts, beginning	3,130	1,827
Additions	2,997	4,106
Reversal or write offs	(3,396)	(2,803)
Allowance for doubtful accounts, ending	2,731	3,130
Customers | Public Entities
DisclosureOfAllowanceForDoubtfulAccountsLineItems [Line Items]
Allowance for doubtful accounts, beginning	12,981	10,651
Additions	(3,833)	2,424
Reversal or write offs	(4,313)	(94)
Allowance for doubtful accounts, ending	4,835	12,981
Customers | Public lighting
DisclosureOfAllowanceForDoubtfulAccountsLineItems [Line Items]
Allowance for doubtful accounts, beginning	104	81
Additions	205	23
Reversal or write offs	(269)	0
Allowance for doubtful accounts, ending	40	104
Customers | Public service
DisclosureOfAllowanceForDoubtfulAccountsLineItems [Line Items]
Allowance for doubtful accounts, beginning	1,111	607
Additions	(653)	504
Reversal or write offs	(439)	0
Allowance for doubtful accounts, ending	19	1,111
Concessionaires and Permission holder
DisclosureOfAllowanceForDoubtfulAccountsLineItems [Line Items]
Allowance for doubtful accounts, beginning	132,742	129,806
Additions	1,287	3,266
Reversal or write offs	(175)	(330)
Allowance for doubtful accounts, ending	133,854	132,742
Concessionaires and Permission holder | CCEE
DisclosureOfAllowanceForDoubtfulAccountsLineItems [Line Items]
Allowance for doubtful accounts, beginning	119,665	119,665
Additions	0	0
Reversal or write offs	0	0
Allowance for doubtful accounts, ending	119,665	119,665
Concessionaires and Permission holder | Concessionaires and Permission holder
DisclosureOfAllowanceForDoubtfulAccountsLineItems [Line Items]
Allowance for doubtful accounts, beginning	13,077	10,141
Additions	1,287	3,266
Reversal or write offs	(175)	(330)
Allowance for doubtful accounts, ending	14,189	13,077
Telecommunications
DisclosureOfAllowanceForDoubtfulAccountsLineItems [Line Items]
Allowance for doubtful accounts, beginning	534	191
Additions	8,309	2,598
Reversal or write offs	(7,332)	(2,255)
Allowance for doubtful accounts, ending	1,511	534
Gas distribution
DisclosureOfAllowanceForDoubtfulAccountsLineItems [Line Items]
Allowance for doubtful accounts, beginning	4,924	1,795
Additions	1,433	3,209
Reversal or write offs	(103)	(80)
Allowance for doubtful accounts, ending	R$ 6,254	R$ 4,924

XML

8. CRC Transferred to the State Government of Paraná (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Crc Transferred To State Government Of Paran Details
Changes in CRC, beginning	R$ 1,522,735	R$ 1,383,242
Interest	97,085	92,959
Monetary variations	(6,373)	95,959
Amortizations	(97,085)	(49,425)
Changes in CRC, ending	1,516,362	1,522,735
Changes in CRC, current	167,109	0
Changes in CRC, noncurrent	R$ 1,349,253	R$ 1,522,735

XML

8. CRC Transferred to the State Government of Paraná (Details 1) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016
DisclosureOfChangesInCrcLineItems [Line Items]
CRC transferred to the State Government of Paraná noncurrent	R$ 1,349,253	R$ 1,522,735
2019
DisclosureOfChangesInCrcLineItems [Line Items]
CRC transferred to the State Government of Paraná noncurrent	178,223
2020
DisclosureOfChangesInCrcLineItems [Line Items]
CRC transferred to the State Government of Paraná noncurrent	190,076
2021
DisclosureOfChangesInCrcLineItems [Line Items]
CRC transferred to the State Government of Paraná noncurrent	202,717
2022
DisclosureOfChangesInCrcLineItems [Line Items]
CRC transferred to the State Government of Paraná noncurrent	216,198
2023
DisclosureOfChangesInCrcLineItems [Line Items]
CRC transferred to the State Government of Paraná noncurrent	230,576
After 2023
DisclosureOfChangesInCrcLineItems [Line Items]
CRC transferred to the State Government of Paraná noncurrent	R$ 331,463

XML

9. Net Sectorial Financial Assets and Liabilities (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of financial assets [line items]
Sectorial financial assets, current	R$ 171,609	R$ 0	R$ 910,759
Sectorial financial assets, noncurrent	171,609	0	134,903
Sectorial financial liabilities, current	(192,819)	(155,261)	0
Sectorial financial liabilities, noncurrent	(90,700)	(123,731)	R$ 0
Electricity rate adjustment recoverable 2018 | Portion A | Electricity purchased for resale - CVA Energ
Disclosure of financial assets [line items]
Sectorial financial assets, current	333,412
Sectorial financial assets, noncurrent	333,412
Electricity rate adjustment recoverable 2018 | Portion A | Electricity purchased for resale - Itaipu
Disclosure of financial assets [line items]
Sectorial financial assets, current	250,851
Sectorial financial assets, noncurrent	250,851
Electricity rate adjustment recoverable 2018 | Portion A | Transport of energy using the transmission system - basic grid
Disclosure of financial assets [line items]
Sectorial financial assets, current	18,056
Sectorial financial assets, noncurrent	18,056
Electricity rate adjustment recoverable 2018 | Portion A | Transport of energy purchased from Itaipu
Disclosure of financial assets [line items]
Sectorial financial assets, current	5,063
Sectorial financial assets, noncurrent	5,063
Electricity rate adjustment recoverable 2018 | Portion A | ESS
Disclosure of financial assets [line items]
Sectorial financial assets, current	(211,735)
Sectorial financial assets, noncurrent	(211,735)
Electricity rate adjustment recoverable 2018 | Portion A | CDE
Disclosure of financial assets [line items]
Sectorial financial assets, current	(28,800)
Sectorial financial assets, noncurrent	(28,800)
Electricity rate adjustment recoverable 2018 | Portion A | Proinfa
Disclosure of financial assets [line items]
Sectorial financial assets, current	(33)
Sectorial financial assets, noncurrent	(33)
Electricity rate adjustment recoverable 2018 | Other financial components | Neutrality
Disclosure of financial assets [line items]
Sectorial financial assets, current	33,319
Sectorial financial assets, noncurrent	33,319
Electricity rate adjustment recoverable 2018 | Other financial components | Overcontracting
Disclosure of financial assets [line items]
Sectorial financial assets, current	(112,137)
Sectorial financial assets, noncurrent	(112,137)
Electricity rate adjustment recoverable 2018 | Other financial components | Hydrological risk
Disclosure of financial assets [line items]
Sectorial financial assets, current	(93,964)
Sectorial financial assets, noncurrent	(93,964)
Electricity rate adjustment recoverable 2018 | Other financial components | Tariff refunds
Disclosure of financial assets [line items]
Sectorial financial assets, current	(21,302)
Sectorial financial assets, noncurrent	(21,302)
Electricity rate adjustment recoverable 2018 | Other financial components | CVA Angra III Adjustment
Disclosure of financial assets [line items]
Sectorial financial assets, current	(1,121)
Sectorial financial assets, noncurrent	(1,121)
Electricity rate adjustment recoverable 2016
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	0	(102,774)
Sectorial financial liabilities, noncurrent	0	0
Electricity rate adjustment recoverable 2016 | Portion A | Electricity purchased for resale - CVA Energ
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	0	(318,905)
Sectorial financial liabilities, noncurrent	0	0
Electricity rate adjustment recoverable 2016 | Portion A | Electricity purchased for resale - Itaipu
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	0	354,651
Sectorial financial liabilities, noncurrent	0	0
Electricity rate adjustment recoverable 2016 | Portion A | Transport of energy using the transmission system - basic grid
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	0	(67)
Sectorial financial liabilities, noncurrent	0	0
Electricity rate adjustment recoverable 2016 | Portion A | Transport of energy purchased from Itaipu
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	0	3,759
Sectorial financial liabilities, noncurrent	0	0
Electricity rate adjustment recoverable 2016 | Portion A | ESS
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	0	(65,712)
Sectorial financial liabilities, noncurrent	0	0
Electricity rate adjustment recoverable 2016 | Portion A | CDE
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	0	146,005
Sectorial financial liabilities, noncurrent	0	0
Electricity rate adjustment recoverable 2016 | Portion A | Proinfa
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	0	15,179
Sectorial financial liabilities, noncurrent	0	0
Electricity rate adjustment recoverable 2016 | Other financial components | Neutrality
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	0	40,564
Sectorial financial liabilities, noncurrent	0	0
Electricity rate adjustment recoverable 2016 | Other financial components | Overcontracting
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	0	(4,794)
Sectorial financial liabilities, noncurrent	0	0
Electricity rate adjustment recoverable 2016 | Other financial components | Extraordinary Tariff Review
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	0	(257,353)
Sectorial financial liabilities, noncurrent	0	0
Electricity rate adjustment recoverable 2016 | Other financial components | Financial exposure
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	0	(16,250)
Sectorial financial liabilities, noncurrent	0	0
Electricity rate adjustment recoverable 2016 | Other financial components | Others
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	0	149
Sectorial financial liabilities, noncurrent	0	0
Electricity rate adjustment recoverable 2017
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	(192,819)	(52,487)
Sectorial financial liabilities, noncurrent	0	(52,487)
Electricity rate adjustment recoverable 2017 | Portion A | Electricity purchased for resale - CVA Energ
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	(168,939)	(108,610)
Sectorial financial liabilities, noncurrent	0	(108,610)
Electricity rate adjustment recoverable 2017 | Portion A | Electricity purchased for resale - Itaipu
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	36,002	34,717
Sectorial financial liabilities, noncurrent	0	34,717
Electricity rate adjustment recoverable 2017 | Portion A | Transport of energy using the transmission system - basic grid
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	11,127	4,239
Sectorial financial liabilities, noncurrent	0	4,239
Electricity rate adjustment recoverable 2017 | Portion A | Transport of energy purchased from Itaipu
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	2,797	1,972
Sectorial financial liabilities, noncurrent	0	1,972
Electricity rate adjustment recoverable 2017 | Portion A | ESS
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	(167,938)	(103,853)
Sectorial financial liabilities, noncurrent	0	(103,853)
Electricity rate adjustment recoverable 2017 | Portion A | CDE
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	(84,293)	(37,697)
Sectorial financial liabilities, noncurrent	0	(37,697)
Electricity rate adjustment recoverable 2017 | Portion A | Proinfa
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	(5,122)	1,057
Sectorial financial liabilities, noncurrent	0	1,057
Electricity rate adjustment recoverable 2017 | Other financial components | Neutrality
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	54,609	75,206
Sectorial financial liabilities, noncurrent	0	75,206
Electricity rate adjustment recoverable 2017 | Other financial components | Overcontracting
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	87,949	80,482
Sectorial financial liabilities, noncurrent	0	80,482
Electricity rate adjustment recoverable 2017 | Other financial components | Tariff refunds
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	(12,470)	0
Sectorial financial liabilities, noncurrent	0	0
Electricity rate adjustment recoverable 2017 | Other financial components | CVA Angra III Adjustment
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	50,435	0
Sectorial financial liabilities, noncurrent	0	0
Electricity rate adjustment recoverable 2017 | Other financial components | Others
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	3,024	0
Sectorial financial liabilities, noncurrent	0	0
Tariff Review 2021 | Financial components
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	0	0
Sectorial financial liabilities, noncurrent	(90,700)	(71,244)
Tariff Review 2021 | Financial components | Tariff refunds
Disclosure of financial assets [line items]
Sectorial financial liabilities, current	0	0
Sectorial financial liabilities, noncurrent	R$ (90,700)	R$ (71,244)

XML

9. Net Sectorial Financial Assets and Liabilities (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	R$ (278,992)	R$ 1,045,662
Operating revenues, constitution	457,494	(364,445)
Operating revenues, amortization	309,546	(715,217)
Financial results, updating	(9,129)	13,787
Rate flags	(419,220)	(258,779)
Net sectorial financial assets and liabilities, ending	59,699	(278,992)
Sectorial financial assets, current	171,609	0	R$ 910,759
Sectorial financial assets, noncurrent	171,609	0	134,903
Sectorial financial liabilities, current	(192,819)	(155,261)	0
Sectorial financial liabilities, noncurrent	(90,700)	(123,731)	R$ 0
Portion A | Electricity purchased for resale - Itaipu
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	424,085	699,408
Operating revenues, constitution	495,889	61,905
Operating revenues, amortization	(420,054)	(409,894)
Financial results, updating	37,784	72,666
Rate flags	0	0
Net sectorial financial assets and liabilities, ending	537,704	424,085
Portion A | Electricity purchased for resale - CVA Energ
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	(536,125)	(14,865)
Operating revenues, constitution	937,324	(255,085)
Operating revenues, amortization	517,751	(37,860)
Financial results, updating	(1,845)	(39,710)
Rate flags	(419,220)	(188,605)
Net sectorial financial assets and liabilities, ending	497,885	(536,125)
Portion A | Transport of energy using the transmission system - basic grid
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	8,411	77,011
Operating revenues, constitution	50,426	(271)
Operating revenues, amortization	(12,275)	(74,168)
Financial results, updating	677	5,839
Rate flags	0	0
Net sectorial financial assets and liabilities, ending	47,239	8,411
Portion A | Transport of energy purchased from Itaipu
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	7,703	7,723
Operating revenues, constitution	11,067	6,340
Operating revenues, amortization	(7,155)	(7,388)
Financial results, updating	1,308	1,028
Rate flags	0	0
Net sectorial financial assets and liabilities, ending	12,923	7,703
Portion A | ESS
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	(273,418)	(339,154)
Operating revenues, constitution	(529,932)	(124,737)
Operating revenues, amortization	262,568	292,804
Financial results, updating	(50,626)	(32,157)
Rate flags	0	(70,174)
Net sectorial financial assets and liabilities, ending	(591,408)	(273,418)
Portion A | CDE
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	70,611	633,112
Operating revenues, constitution	(158,514)	(249,476)
Operating revenues, amortization	(60,149)	(350,600)
Financial results, updating	6,159	37,575
Rate flags	0	0
Net sectorial financial assets and liabilities, ending	(141,893)	70,611
Portion A | Proinfa
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	17,293	(1,265)
Operating revenues, constitution	(14,677)	32,382
Operating revenues, amortization	(10,423)	(16,271)
Financial results, updating	2,619	2,447
Rate flags	0	0
Net sectorial financial assets and liabilities, ending	(5,188)	17,293
Other financial components | Neutrality
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	190,976	64,644
Operating revenues, constitution	28,694	154,607
Operating revenues, amortization	(99,593)	(35,958)
Financial results, updating	1,170	7,683
Rate flags	0	0
Net sectorial financial assets and liabilities, ending	121,247	190,976
Other financial components | CVA Angra III Adjustment
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	0
Operating revenues, constitution	97,426
Operating revenues, amortization	(54,516)
Financial results, updating	5,283
Rate flags	0
Net sectorial financial assets and liabilities, ending	48,193	0
Other financial components | Hydrological risk
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	0
Operating revenues, constitution	(183,728)
Operating revenues, amortization	0
Financial results, updating	(4,200)
Rate flags	0
Net sectorial financial assets and liabilities, ending	(187,928)	0
Other financial components | Tariff refunds
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	(71,244)	0
Operating revenues, constitution	(78,254)	(66,043)
Operating revenues, amortization	13,479	0
Financial results, updating	(9,755)	(5,201)
Rate flags	0	0
Net sectorial financial assets and liabilities, ending	(145,774)	(71,244)
Other financial components | Overcontracting
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	156,170	120,776
Operating revenues, constitution	(203,797)	115,791
Operating revenues, amortization	(90,272)	(73,595)
Financial results, updating	1,574	(6,802)
Rate flags	0	0
Net sectorial financial assets and liabilities, ending	(136,325)	156,170
Other financial components | Extraordinary Tariff Review
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	(257,353)	(708,609)
Operating revenues, constitution	0	21,541
Operating revenues, amortization	257,353	457,942
Financial results, updating	0	(28,227)
Rate flags	0	0
Net sectorial financial assets and liabilities, ending	0	(257,353)
Other financial components | Financial exposure
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	(16,250)	18,714
Operating revenues, constitution	0	(42,000)
Operating revenues, amortization	16,250	7,643
Financial results, updating	0	(607)
Rate flags	0	0
Net sectorial financial assets and liabilities, ending	0	(16,250)
Other financial components | Others
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	149	84
Operating revenues, constitution	5,570	409
Operating revenues, amortization	(3,418)	(245)
Financial results, updating	723	(99)
Rate flags	0	0
Net sectorial financial assets and liabilities, ending	3,024	149
Other financial components | Deferral IRT
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	0	467,627
Operating revenues, constitution		0
Operating revenues, amortization		(467,627)
Financial results, updating		0
Rate flags		0
Net sectorial financial assets and liabilities, ending		0
Other financial components | Preliminary injunctions CDE
Disclosure of financial assets [line items]
Net sectorial financial assets and liabilities, beginning	R$ 0	20,456
Operating revenues, constitution		(19,808)
Operating revenues, amortization		0
Financial results, updating		(648)
Rate flags		0
Net sectorial financial assets and liabilities, ending		R$ 0

XML

10. Accounts Receivable Related to the Concession (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfAccountsReceivableRelatedToConcessionLineItems [Line Items]
Accounts receivable related to the concession	R$ 4,510,122	R$ 3,813,930
Accounts receivable related to the concession, current	149,744	65,595	R$ 9,162
Accounts receivable related to the concession, noncurrent	4,360,378	3,748,335	R$ 1,358,451
Distribution concession agreement
DisclosureOfAccountsReceivableRelatedToConcessionLineItems [Line Items]
Accounts receivable related to the concession	684,206	614,806
Bonus from the grant of concession agreements under the quota system
DisclosureOfAccountsReceivableRelatedToConcessionLineItems [Line Items]
Accounts receivable related to the concession	606,479	586,706
Transmission concession agreement
DisclosureOfAccountsReceivableRelatedToConcessionLineItems [Line Items]
Accounts receivable related to the concession	1,497,399	1,342,055
Remeasurement of RBSE financial assets
DisclosureOfAccountsReceivableRelatedToConcessionLineItems [Line Items]
Accounts receivable related to the concession	1,418,370	1,186,985
Concession agreement - gas distribution
DisclosureOfAccountsReceivableRelatedToConcessionLineItems [Line Items]
Accounts receivable related to the concession	R$ 303,668	R$ 83,378

XML

10. Accounts Receivable Related to the Concession (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Accounts Receivable Related To Concession Details 1
Distribution concession agreement, beginning	R$ 614,806	R$ 424,140
Donations and grants received	76
Transfers from intangible assets	56,853	58,970
Transfer from investments	(3,711)	12
Fair value recognition	16,199	131,738
Loss on disposal	(17)	(54)
Distribution concession agreement, ending	R$ 684,206	R$ 614,806

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10. Accounts Receivable Related to the Concession (Details 2) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Accounts Receivable Related To Concession Details 2
Bonus from the grant, beginning	R$ 586,706	R$ 0
Bonus from the grant recognition		574,827
Transfers to electricity grid use charges - customers	(62,387)	(84,904)
Interest	82,160	96,783
Bonus from the grant, ending	R$ 606,479	R$ 586,706

XML

10. Accounts Receivable Related to the Concession (Details 3) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Accounts Receivable Related To Concession Details 3
Transmission concession agreement, beginning	R$ 1,342,055	R$ 929,835
Transfers to electricity grid use charges - customers	(81,497)	(53,851)
Transfers to property, plant and equipment	(29,264)	(5,066)
Transfers to intagible		(150)
Transfers from recognition of RBSE appraisal report adjustment		(61,760)
Remuneration	129,769	98,780
Reversal of estimated losses		29,025
Construction income	136,336	405,242
Transmission concession agreement, ending	R$ 1,497,399	R$ 1,342,055

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10. Accounts Receivable Related to the Concession (Details 4) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Accounts Receivable Related To Concession Details 4
Remeasurement of RBSE financial assets, beginning	R$ 1,186,985	R$ 0
Gain on remeasurement of the cash flow from the RBSE assets	178,141	809,639
Transfer from accounts receivable related to the concession compensation (Note 11)		160,217
Transfers from property, plant and equipment		155,369
Transfers from recognition of RBSE appraisal report adjustment		61,760
Increase in the estimated amount due to the approval of the report on RBSE assets	183,015
Transfers to electricity grid use charges - customers	(129,771)
Remeasurement of RBSE financial assets, ending	R$ 1,418,370	R$ 1,186,985

XML

10. Accounts Receivable Related to the Concession (Details 5) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Accounts Receivable Related To Concession Details 5
Concession agreement - gas distribution, beginning	R$ 83,378	R$ 13,638
Reclassified from intangible assets	154,800
Transfer from intangible assets	24,609	68,737
Fair value recognition	40,881	1,003
Concession agreement - gas distribution, ending	R$ 303,668	R$ 83,378

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11. Accounts Receivable Related to the Concession Compensation (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Accounts Receivable Related To Concession Compensation Details
Accounts receivable related to concession compensation, beginning	R$ 67,401	R$ 219,556
Transfer to accounts receivable related to the concession		(160,217)
Gain on remeasurement of the cash flow	341	8,137
Impairment		(75)
Reversal of impairment	1,117
Accounts receivable related to concession compensation, ending	R$ 68,859	R$ 67,401

XML

12. Other Receivables (Details) - BRL (R$) R$ in Thousands		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfOtherReceivablesLineItems [Line Items]
Other receivables		R$ 558,767	R$ 380,484
Other current receivables		409,351	306,933	R$ 474,889
Other noncurrent receivables		149,416	73,551	R$ 31,614
Services in progress
DisclosureOfOtherReceivablesLineItems [Line Items]
Other receivables	[1]	141,959	136,085
CDE Transfer
DisclosureOfOtherReceivablesLineItems [Line Items]
Other receivables		136,559	45,929
Credits on sales and purchases of gas
DisclosureOfOtherReceivablesLineItems [Line Items]
Other receivables		77,279	28,313
Decommissioning in progress
DisclosureOfOtherReceivablesLineItems [Line Items]
Other receivables		44,451	16,493
Advance payments to suppliers
DisclosureOfOtherReceivablesLineItems [Line Items]
Other receivables	[2]	29,016	43,602
Advance payments to employees
DisclosureOfOtherReceivablesLineItems [Line Items]
Other receivables		25,928	25,916
Advance for severance estate
DisclosureOfOtherReceivablesLineItems [Line Items]
Other receivables		19,230	11,050
Other receivables
DisclosureOfOtherReceivablesLineItems [Line Items]
Other receivables		R$ 84,345	R$ 73,096

[1] This item refers to services currently in progress within the Company, most of which are related to the Research and Development and Energy Efficiency programs, which upon conclusion are offset against the respective liability recorded for this purpose.

[2] Advances to suppliers provided on contractual clauses.

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13. Taxes (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfIncomeTaxAndSocialContributionLineItems [Line Items]
Income tax and social contribution, current	R$ 501,685	R$ 188,952	R$ 194,244
Income tax and social contribution, noncurrent	176,480	169,967	94,686
Income tax and social contribution payable, current	86,310	41,454	R$ 311,916
IR and CSLL paid in advance
DisclosureOfIncomeTaxAndSocialContributionLineItems [Line Items]
Income tax and social contribution, current	937,663	765,150
Income tax and social contribution, noncurrent	176,480	169,967
IR and CSLL to be offset against liability
DisclosureOfIncomeTaxAndSocialContributionLineItems [Line Items]
Income tax and social contribution, current	(435,978)	(576,198)
IR and CSLL due
DisclosureOfIncomeTaxAndSocialContributionLineItems [Line Items]
Income tax and social contribution payable, current	362,307	547,992
IR and CSLL to be offset against asset
DisclosureOfIncomeTaxAndSocialContributionLineItems [Line Items]
Income tax and social contribution payable, current	R$ (275,997)	R$ (506,538)

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13. Taxes (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning	R$ 1,700,364	R$ 1,602,483
Noncurrent assets, recognized in income	165,425	67,707
Noncurrent assets, recognized in other comprehensive income	16,827	30,174
Noncurrent assets, ending	1,882,616	1,700,364
Noncurrent liabilities, beginning	1,064,439	1,065,135
Noncurrent liabilities, recognized in income	60,168	1,925
Noncurrent liabilities, recognized in other comprehensive income	853	1,229
Noncurrent liabilities, ending	1,123,754	1,064,439
Net, recognized in income	105,257	69,632
Net, recognized in other comprehensive income	17,680	28,945
Net	758,862	635,925	R$ 537,348
Assets presented in the Statement of Financial Position	915,492	814,355	537,562
Liabilities presented in the Statement of Financial Position	156,630	178,430	R$ 214
Provisions for legal claims
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning	438,538	456,316
Noncurrent assets, recognized in income	75,820	17,778
Noncurrent assets, recognized in other comprehensive income	0	0
Noncurrent assets, ending	514,358	438,538
Post-employment benefits
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning	260,068	201,260
Noncurrent assets, recognized in income	16,716	28,634
Noncurrent assets, recognized in other comprehensive income	16,827	30,174
Noncurrent assets, ending	293,611	260,068
Impairment of assets
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning	289,617	252,026
Noncurrent assets, recognized in income	20,944	37,591
Noncurrent assets, recognized in other comprehensive income	0	0
Noncurrent assets, ending	310,561	289,617
Research and development and energy efficiency programs
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning	142,279	116,671
Noncurrent assets, recognized in income	14,046	25,608
Noncurrent assets, recognized in other comprehensive income	0	0
Noncurrent assets, ending	156,325	142,279
Provision for energy purchases
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning	115,257	184,471
Noncurrent assets, recognized in income	14,620	69,214
Noncurrent assets, recognized in other comprehensive income	0	0
Noncurrent assets, ending	129,877	115,257
Allowance for doubtful accounts
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning	129,638	125,941
Noncurrent assets, recognized in income	16,258	3,697
Noncurrent assets, recognized in other comprehensive income	0	0
Noncurrent assets, ending	113,380	129,638
Tax losses and negative tax basis
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning	51,113	6,050
Noncurrent assets, recognized in income	59,545	45,063
Noncurrent assets, recognized in other comprehensive income	0	0
Noncurrent assets, ending	110,658	51,113
Social security contributions - injunction on judicial deposit
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning	54,750	36,758
Noncurrent assets, recognized in income	6,106	17,992
Noncurrent assets, recognized in other comprehensive income	0	0
Noncurrent assets, ending	60,856	54,750
Amortization - concession
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning	44,131	39,539
Noncurrent assets, recognized in income	4,591	4,592
Noncurrent assets, recognized in other comprehensive income	0	0
Noncurrent assets, ending	48,722	44,131
Concession contracts
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning	26,206	38,009
Noncurrent assets, recognized in income	1,300	11,803
Noncurrent assets, recognized in other comprehensive income	0	0
Noncurrent assets, ending	24,906	26,206
Noncurrent liabilities, beginning	440,522	91,359
Noncurrent liabilities, recognized in income	95,204	349,163
Noncurrent liabilities, recognized in other comprehensive income	0	0
Noncurrent liabilities, ending	535,726	440,522
Provision for tax losses
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning	23,176	17,426
Noncurrent assets, recognized in income	739	5,750
Noncurrent assets, recognized in other comprehensive income	0	0
Noncurrent assets, ending	23,915	23,176
Provision for profit sharing
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning	21,331	25,825
Noncurrent assets, recognized in income	939	4,494
Noncurrent assets, recognized in other comprehensive income	0	0
Noncurrent assets, ending	22,270	21,331
Financial instruments
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning	12,923	6,316
Noncurrent assets, recognized in income	2,795	6,607
Noncurrent assets, recognized in other comprehensive income	0	0
Noncurrent assets, ending	15,718	12,923
Others
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent assets, beginning	91,337	95,875
Noncurrent assets, recognized in income	33,878	4,538
Noncurrent assets, recognized in other comprehensive income	0	0
Noncurrent assets, ending	57,459	91,337
Noncurrent liabilities, beginning	30,548	410,141
Noncurrent liabilities, recognized in income	14,906	380,822
Noncurrent liabilities, recognized in other comprehensive income	853	1,229
Noncurrent liabilities, ending	44,601	30,548
Deemed cost
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent liabilities, beginning	486,795	539,190
Noncurrent liabilities, recognized in income	36,911	52,395
Noncurrent liabilities, recognized in other comprehensive income	0	0
Noncurrent liabilities, ending	449,884	486,795
Escrow deposits monetary variation
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent liabilities, beginning	62,538	0
Noncurrent liabilities, recognized in income	7,210	62,538
Noncurrent liabilities, recognized in other comprehensive income	0	0
Noncurrent liabilities, ending	55,328	62,538
Transaction cost on borrowings and debentures
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent liabilities, beginning	9,642	7,768
Noncurrent liabilities, recognized in income	11,896	1,874
Noncurrent liabilities, recognized in other comprehensive income	0	0
Noncurrent liabilities, ending	21,538	9,642
Deferment of capital gains
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent liabilities, beginning	11,320	11,320
Noncurrent liabilities, recognized in income	0	0
Noncurrent liabilities, recognized in other comprehensive income	0	0
Noncurrent liabilities, ending	11,320	11,320
Capitalization of financial charges
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent liabilities, beginning	5,357	5,357
Noncurrent liabilities, recognized in income	0	0
Noncurrent liabilities, recognized in other comprehensive income	0	0
Noncurrent liabilities, ending	5,357	5,357
Result from the change in the investment valuation method
DisclosureOfChangesInDeferredIncomeTaxAndSocialContributionLineItems [Line Items]
Noncurrent liabilities, beginning	17,717	0
Noncurrent liabilities, recognized in income	17,717	17,717
Noncurrent liabilities, recognized in other comprehensive income	0	0
Noncurrent liabilities, ending	R$ 0	R$ 17,717

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13. Taxes (Details 2) R$ in Thousands	Dec. 31, 2017 BRL (R$)
DisclosureOfDeferredTaxesLineItems [Line Items]
Assets	R$ 1,882,616
Liabilities	(1,123,754)
2018
DisclosureOfDeferredTaxesLineItems [Line Items]
Assets	482,107
Liabilities	(82,039)
2019
DisclosureOfDeferredTaxesLineItems [Line Items]
Assets	268,072
Liabilities	(105,308)
2020
DisclosureOfDeferredTaxesLineItems [Line Items]
Assets	185,597
Liabilities	(71,167)
2021
DisclosureOfDeferredTaxesLineItems [Line Items]
Assets	115,637
Liabilities	(69,403)
2022
DisclosureOfDeferredTaxesLineItems [Line Items]
Assets	80,570
Liabilities	(70,448)
2023 to 2025
DisclosureOfDeferredTaxesLineItems [Line Items]
Assets	193,845
Liabilities	(189,305)
2026 to 2028
DisclosureOfDeferredTaxesLineItems [Line Items]
Assets	556,788
Liabilities	R$ (536,084)

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13. Taxes (Details 3) - BRL (R$) R$ in Thousands		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfOtherRecoverableTaxesAndOtherTaxesDueLineItems [Line Items]
Other current taxes recoverable		R$ 198,232	R$ 67,931	R$ 70,725
Other noncurrent taxes recoverable		116,974	131,108	112,902
Other current tax obligations		345,487	294,994	340,948
Other noncurrent tax obligations		809,576	303,146	R$ 257,273
Recoverable ICMS (VAT)
DisclosureOfOtherRecoverableTaxesAndOtherTaxesDueLineItems [Line Items]
Other current taxes recoverable		68,773	62,934
Other noncurrent taxes recoverable		36,740	35,659
Recoverable PIS/Pasep and Cofins taxes
DisclosureOfOtherRecoverableTaxesAndOtherTaxesDueLineItems [Line Items]
Other current taxes recoverable		133,090	52,240
PIS/Pasep and Cofins to be offset against liabilities
DisclosureOfOtherRecoverableTaxesAndOtherTaxesDueLineItems [Line Items]
Other current taxes recoverable		(4,202)	(47,810)
Other recoverable taxes
DisclosureOfOtherRecoverableTaxesAndOtherTaxesDueLineItems [Line Items]
Other current taxes recoverable		571	567
Other noncurrent taxes recoverable		33,376	33,336
PIS/Pasep and Cofins taxes
DisclosureOfOtherRecoverableTaxesAndOtherTaxesDueLineItems [Line Items]
Other noncurrent taxes recoverable		46,858	62,113
ICMS (VAT) payable
DisclosureOfOtherRecoverableTaxesAndOtherTaxesDueLineItems [Line Items]
Other current tax obligations		151,928	113,793
PIS/Pasep and Cofins payable
DisclosureOfOtherRecoverableTaxesAndOtherTaxesDueLineItems [Line Items]
Other current tax obligations		138,797	136,437
PIS/Pasep and Cofins to be offset against assets
DisclosureOfOtherRecoverableTaxesAndOtherTaxesDueLineItems [Line Items]
Other current tax obligations		(121,165)	(87,629)
IRRF on JSCP
DisclosureOfOtherRecoverableTaxesAndOtherTaxesDueLineItems [Line Items]
Other current tax obligations		97,065	90,147
IRRF on JSCP to be offset against IR and CSLL assets
DisclosureOfOtherRecoverableTaxesAndOtherTaxesDueLineItems [Line Items]
Other current tax obligations		(43,018)	(29,841)
Special Tax Regularization Program - Pert
DisclosureOfOtherRecoverableTaxesAndOtherTaxesDueLineItems [Line Items]
Other current tax obligations		45,108	0
Other noncurrent tax obligations		488,563	0
Ordinary financing of taxes with the federal tax authorities
DisclosureOfOtherRecoverableTaxesAndOtherTaxesDueLineItems [Line Items]
Other current tax obligations		63,791	59,558
Other noncurrent tax obligations		85,054	138,969
Other taxes
DisclosureOfOtherRecoverableTaxesAndOtherTaxesDueLineItems [Line Items]
Other current tax obligations		12,981	12,529
Other noncurrent tax obligations		3,237	2,841
Social security contributions - injunction on judicial deposit
DisclosureOfOtherRecoverableTaxesAndOtherTaxesDueLineItems [Line Items]
Other noncurrent tax obligations		179,373	161,336
TCFRH
DisclosureOfOtherRecoverableTaxesAndOtherTaxesDueLineItems [Line Items]
Other noncurrent tax obligations	[1]	R$ 53,349	R$ 0

[1] Fee for Control, Monitoring and Inspection of Activities of Exploitation and Use of Water Resources.

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13. Taxes (Details 4) R$ in Thousands	Dec. 31, 2017 BRL (R$)
DisclosureOfDebtAfterSpecialTaxRegularizationProgramLineItems [Line Items]
Principal	R$ 557,365
Fine	111,473
Interest	171,263
Consolidated debt before joining Pert	840,101
Reduction of fine and interest - Pert	154,197
Debt balance	685,904
PIS
DisclosureOfDebtAfterSpecialTaxRegularizationProgramLineItems [Line Items]
Principal	29,432
Fine	5,886
Interest	8,612
Consolidated debt before joining Pert	43,930
Reduction of fine and interest - Pert	7,866
Debt balance	36,064
Cofins
DisclosureOfDebtAfterSpecialTaxRegularizationProgramLineItems [Line Items]
Principal	135,614
Fine	27,123
Interest	39,678
Consolidated debt before joining Pert	202,415
Reduction of fine and interest - Pert	36,242
Debt balance	166,173
IRPJ
DisclosureOfDebtAfterSpecialTaxRegularizationProgramLineItems [Line Items]
Principal	286,528
Fine	57,306
Interest	89,814
Consolidated debt before joining Pert	433,648
Reduction of fine and interest - Pert	80,404
Debt balance	353,244
CSLL
DisclosureOfDebtAfterSpecialTaxRegularizationProgramLineItems [Line Items]
Principal	105,791
Fine	21,158
Interest	33,159
Consolidated debt before joining Pert	160,108
Reduction of fine and interest - Pert	29,685
Debt balance	R$ 130,423

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13. Taxes (Details 5) R$ in Thousands	Dec. 31, 2017 BRL (R$)
DisclosureOfTaxCreditsLineItems [Line Items]
Principal	R$ 760,409
Interest	111,048
Total	871,457
PIS
DisclosureOfTaxCreditsLineItems [Line Items]
Principal	40,379
Interest	6,716
Total	47,095
Cofins
DisclosureOfTaxCreditsLineItems [Line Items]
Principal	185,134
Interest	30,803
Total	215,937
IRPJ
DisclosureOfTaxCreditsLineItems [Line Items]
Principal	369,900
Interest	50,219
Total	420,119
CSLL
DisclosureOfTaxCreditsLineItems [Line Items]
Principal	164,996
Interest	23,310
Total	R$ 188,306

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13. Taxes (Details 6) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Taxes Details 6
Income before IRPJ and CSLL	R$ 1,392,941	R$ 1,394,162	R$ 1,693,794
IRPJ and CSLL (34%)	(473,600)	(474,015)	(575,890)
Tax effects on:
Equity in income	36,555	66,899	21,882
Interest on own capital	90,440	96,202	67,320
Dividends	497	838	572
Non deductible expenses	(26,292)	(11,624)	(13,706)
Tax incentives	14,973	16,567	18,757
Unrecognized income and social contribution tax loss carry-forwards	(5,645)	0	0
Setting up and/or offset of income tax and social contribution losses of prior years	90,804	0	(909)
Difference between the calculation bases of deemed profit and taxable profit	(19,680)	(114,149)	(15,302)
Others	17,262	(100,408)	(34,953)
Current IRPJ and CSLL	(379,943)	(589,322)	(698,023)
Deferred IRPJ and CSLL	R$ 105,257	R$ 69,632	R$ 165,794
Effective rate - %	19.70%	37.30%	31.40%

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14. Prepaid Expenses (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfPrepaidExpensesLineItems [Line Items]
Prepaid expenses	R$ 52,551	R$ 64,679
Prepaid expenses, current	39,867	39,096	R$ 49,282
Prepaid expenses, noncurrent	12,684	25,583	R$ 25,493
Risk premium - GSF renegotiation
DisclosureOfPrepaidExpensesLineItems [Line Items]
Prepaid expenses	28,033	40,909
Others
DisclosureOfPrepaidExpensesLineItems [Line Items]
Prepaid expenses	R$ 24,518	R$ 23,770

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14. Prepaid Expenses (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016
DisclosureOfRecoveryOfPowerPurchaseCostLineItems [Line Items]
Eligible amount of energy (Average MW)	458.419
Asset value to recover as renegotiation of GSF	R$ 134,620	R$ 73,778	R$ 94,095
Value of prepaid expenses to amortize with future risk premium	76,171
Value of intangible assets amortization over the concession period	R$ 58,449
Mauá
DisclosureOfRecoveryOfPowerPurchaseCostLineItems [Line Items]
Physical guarantee (Average MW)	100.827
Eligible amount of energy (Average MW)	97.391
Amortization period of prepaid expenses	01.01.2016 to 06.30.2020
Grant extension period (intangible asset)	not applicable
Asset value to recover as renegotiation of GSF	R$ 28,623
Value of prepaid expenses to amortize with future risk premium	28,623
Value of intangible assets amortization over the concession period	R$ 0
Foz do Areia
DisclosureOfRecoveryOfPowerPurchaseCostLineItems [Line Items]
Physical guarantee (Average MW)	576
Eligible amount of energy (Average MW)	226.705
Amortization period of prepaid expenses	01.01.2016 to 12.31.2016
Grant extension period (intangible asset)	05.24.2023 to 09.17.2023
Asset value to recover as renegotiation of GSF	R$ 66,628
Value of prepaid expenses to amortize with future risk premium	17,222
Value of intangible assets amortization over the concession period	R$ 49,406
Santa Clara and Fundão
DisclosureOfRecoveryOfPowerPurchaseCostLineItems [Line Items]
Physical guarantee (Average MW)	135.4
Eligible amount of energy (Average MW)	134.323
Amortization period of prepaid expenses	01.01.2016 to 04.22.2019
Grant extension period (intangible asset)	10.25.2036 to 05.28.2037
Asset value to recover as renegotiation of GSF	R$ 39,369
Value of prepaid expenses to amortize with future risk premium	30,326
Value of intangible assets amortization over the concession period	R$ 9,043

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14. Prepaid Expenses (Details 2) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfAssetsValueToRecoverAsNegotiationLineItems [Line Items]
Asset value to recover as renegotiation of GSF, beginning	R$ 94,095	R$ 134,620
Amortization	(20,317)	(40,525)
Transfers	0	0
Asset value to recover as renegotiation of GSF, ending	73,778	94,095
Risk premium to be amortized - prepaid expenses	28,033	40,909	R$ 76,171
Grant extension period - intangible	45,745	53,186	R$ 58,449
Risk premium - current asset
DisclosureOfAssetsValueToRecoverAsNegotiationLineItems [Line Items]
Asset value to recover as renegotiation of GSF, beginning	15,459	23,313
Amortization	(12,876)	(32,679)
Transfers	12,876	24,825
Asset value to recover as renegotiation of GSF, ending	15,459	15,459
Risk premium - noncurrent asset
DisclosureOfAssetsValueToRecoverAsNegotiationLineItems [Line Items]
Asset value to recover as renegotiation of GSF, beginning	25,450	25,340
Amortization	0	0
Transfers	(12,876)	110
Asset value to recover as renegotiation of GSF, ending	12,574	25,450
Intangible
DisclosureOfAssetsValueToRecoverAsNegotiationLineItems [Line Items]
Asset value to recover as renegotiation of GSF, beginning	53,186	30,807
Amortization	(7,441)	(4,493)
Transfers	0	26,872
Asset value to recover as renegotiation of GSF, ending	45,745	53,186
Liability deduction with CCEE
DisclosureOfAssetsValueToRecoverAsNegotiationLineItems [Line Items]
Asset value to recover as renegotiation of GSF, beginning	0	55,160
Amortization	0	(3,353)
Transfers	0	(51,807)
Asset value to recover as renegotiation of GSF, ending	R$ 0	R$ 0

XML

15. Receivable from Related Parties (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of transactions between related parties [line items]
Receivable from related parties	R$ 168,991	R$ 184,109
Receivable from related parties, current	38,835	28,968	R$ 19,482
Receivable from related parties, noncurrent	130,156	155,141	R$ 192,803
Controlling shareholders: State of Paraná
Disclosure of transactions between related parties [line items]
Receivable from related parties	130,417	155,141
Joint Ventures: Voltalia São Miguel do Gostoso
Disclosure of transactions between related parties [line items]
Receivable from related parties	38,169	28,968
Joint Ventures: Structure sharing
Disclosure of transactions between related parties [line items]
Receivable from related parties	R$ 405	R$ 0

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16. Other Temporary Investments (Details) - BRL (R$) R$ / shares in Units, R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfOtherTemporaryInvestmentsLineItems [Line Items]
Stock exchange quotation per share (R$)	R$ 0
Other temporary investments	R$ 18,727	R$ 408,297	R$ 0
Companhia de Saneamento do Paraná - Sanepar
DisclosureOfOtherTemporaryInvestmentsLineItems [Line Items]
Shares	36,343,267
Type	Preferred
Stock exchange quotation per share (R$)	R$ 0	R$ 10.75
Other temporary investments	R$ 0	R$ 390,690
Other investments
DisclosureOfOtherTemporaryInvestmentsLineItems [Line Items]
Other temporary investments	R$ 18,727	R$ 17,607

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17. Judicial Deposits (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfJudicialDepositsLineItems [Line Items]
Judicial deposits	R$ 582,529	R$ 657,603	R$ 719,927
Taxes claims
DisclosureOfJudicialDepositsLineItems [Line Items]
Judicial deposits	337,909	43,880
Labor claims
DisclosureOfJudicialDepositsLineItems [Line Items]
Judicial deposits	120,463	149,968
Civil
DisclosureOfJudicialDepositsLineItems [Line Items]
Judicial deposits	119,131	69,038
Civil | Suppliers
DisclosureOfJudicialDepositsLineItems [Line Items]
Judicial deposits	0	7,680
Civil | Civil
DisclosureOfJudicialDepositsLineItems [Line Items]
Judicial deposits	110,495	51,482
Civil | Easements
DisclosureOfJudicialDepositsLineItems [Line Items]
Judicial deposits	6,114	6,679
Civil | Customers
DisclosureOfJudicialDepositsLineItems [Line Items]
Judicial deposits	2,522	3,197
Others
DisclosureOfJudicialDepositsLineItems [Line Items]
Judicial deposits	R$ 5,026	R$ 4,717

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18. Investments (Details) - BRL (R$) R$ in Thousands		12 Months Ended
		Dec. 31, 2017		Dec. 31, 2016
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		R$ 2,344,512		R$ 2,232,484
Equity		101,739		166,411
Equity valuation adjustments				(284)
Investment/advance for future capital increase		248,243		562,170
Amortization		2,505		(367)
Proposed dividends and JCP		(53,391)		(186,290)
Other		(72,965)		(429,612)
Investments, ending		2,570,643		2,344,512
Associates
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		58,749		369,392
Equity		9,761		6,672
Equity valuation adjustments				(479)
Investment/advance for future capital increase		36		57,135
Amortization		2,872		0
Proposed dividends and JCP		(19,349)		(39,023)
Other		2,849		(334,948)
Investments, ending		54,918		58,749
Investment property
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		1,362
Equity		0
Investment/advance for future capital increase		0
Amortization		0
Proposed dividends and JCP		0
Other		0
Investments, ending		1,362		1,362
Other investments
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		1,362		20,473
Equity				0
Equity valuation adjustments				570
Investment/advance for future capital increase				0
Amortization				0
Proposed dividends and JCP				0
Other				(19,681)
Investments, ending				1,362
Dominó Holdings | Associates
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		0
Equity		4
Investment/advance for future capital increase		0
Amortization		0
Proposed dividends and JCP		0
Other		2,453
Investments, ending		2,457		0
Sanepar | Associates
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning	[1]	0		311,679
Equity	[1]			43,120
Equity valuation adjustments	[1]			(479)
Investment/advance for future capital increase	[1]			0
Amortization	[1]			0
Proposed dividends and JCP	[1]			(19,372)
Other	[1]			(334,948)
Investments, ending	[1]			0
Dona Francisca Energética | Associates
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		32,766		32,234
Equity		8,876		7,901
Equity valuation adjustments				0
Investment/advance for future capital increase		0		0
Amortization		0		0
Proposed dividends and JCP		(11,821)		(7,369)
Other		0		0
Investments, ending		29,821		32,766
Foz do Chopim Energética | Associates
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		13,967		15,574
Equity		6,645		10,675
Equity valuation adjustments				0
Investment/advance for future capital increase		0		0
Amortization		0		0
Proposed dividends and JCP		(7,528)		(12,282)
Other		0		0
Investments, ending		13,084		13,967
Other | Associates
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		12,016		9,905
Equity		(5,764)		(55,024)
Equity valuation adjustments				0
Investment/advance for future capital increase		36		57,135
Amortization		2,872		0
Proposed dividends and JCP		0		0
Other		396		0
Investments, ending		9,556		12,016
Joint Ventures
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		2,284,401		1,842,619
Equity		91,978		159,739
Equity valuation adjustments				(375)
Investment/advance for future capital increase		248,207		505,035
Amortization		(367)		(367)
Proposed dividends and JCP		(34,042)		(147,267)
Other		(75,814)		(74,983)
Investments, ending		2,514,363		2,284,401
Joint Ventures | Dominó Holdings
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		81,526		242,652
Equity		(568)		37,492
Equity valuation adjustments				(375)
Investment/advance for future capital increase		0		0
Amortization		0		0
Proposed dividends and JCP		(5,144)		(123,260)
Other		(75,814)	[2]	(74,983)	[3]
Investments, ending		0		81,526
Joint Ventures | Voltalia São Miguel do Gostoso I
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		75,563		72,249
Equity		(565)		4,345
Equity valuation adjustments				0
Investment/advance for future capital increase		0		0
Amortization		0		0
Proposed dividends and JCP		0		(1,031)
Other		0		0
Investments, ending		74,998		75,563
Joint Ventures | Voltalia São Miguel do Gostoso - authorization rights
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		11,140		11,507
Equity		0		0
Equity valuation adjustments				0
Investment/advance for future capital increase		0		0
Amortization		(367)		(367)
Proposed dividends and JCP		0		0
Other		0		0
Investments, ending		10,773		11,140
Joint Ventures | Paraná Gás
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		37		106
Equity		(34)		(69)
Equity valuation adjustments				0
Investment/advance for future capital increase		0		0
Amortization		0		0
Proposed dividends and JCP		0		0
Other		0		0
Investments, ending		3		37
Joint Ventures | Costa Oeste
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		37,232		32,631
Equity		(2,566)		7,372
Equity valuation adjustments				0
Investment/advance for future capital increase		0		0
Amortization		0		0
Proposed dividends and JCP		(1,020)		(2,771)
Other		0		0
Investments, ending		33,646		37,232
Joint Ventures | Marumbi
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		94,878		75,914
Equity		(9,537)		16,188
Equity valuation adjustments				0
Investment/advance for future capital increase		0		3,520
Amortization		0		0
Proposed dividends and JCP		0		(744)
Other		0		0
Investments, ending		85,341		94,878
Joint Ventures | Transmissora Sul Brasileira
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		69,369		67,563
Equity		(5,009)		1,806
Equity valuation adjustments				0
Investment/advance for future capital increase		0		0
Amortization		0		0
Proposed dividends and JCP		0		0
Other		0		0
Investments, ending		64,360		69,369
Joint Ventures | Caiuá
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		60,057		51,271
Equity		(4,020)		8,143
Equity valuation adjustments				0
Investment/advance for future capital increase		0		0
Amortization		0		0
Proposed dividends and JCP		0		643
Other		0		0
Investments, ending		56,037		60,057
Joint Ventures | Integração Maranhense
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		122,253		104,286
Equity		(8,852)		15,934
Equity valuation adjustments				0
Investment/advance for future capital increase		0		1,569
Amortization		0		0
Proposed dividends and JCP		0		464
Other		0		0
Investments, ending		113,401		122,253
Joint Ventures | Matrinchã
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		792,069		697,912
Equity		57,376		41,910
Equity valuation adjustments				0
Investment/advance for future capital increase		0		67,345
Amortization		0		0
Proposed dividends and JCP		(13,626)		(15,098)
Other		0		0
Investments, ending		835,819		792,069
Joint Ventures | Guaraciaba
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		398,969		298,794
Equity		25,377		11,194
Equity valuation adjustments				0
Investment/advance for future capital increase		0		90,564
Amortization		0		0
Proposed dividends and JCP		(6,026)		(1,583)
Other		0		0
Investments, ending		418,320		398,969
Joint Ventures | Paranaíba
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		147,213		100,726
Equity		17,020		12,847
Equity valuation adjustments				0
Investment/advance for future capital increase		2,082		36,691
Amortization		0		0
Proposed dividends and JCP		(4,042)		(3,051)
Other		0		0
Investments, ending		162,273		147,213
Joint Ventures | Mata de Santa Genebra
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		232,240		26,903
Equity		19,477		(2,578)
Equity valuation adjustments				0
Investment/advance for future capital increase		210,920		207,915
Amortization		0		0
Proposed dividends and JCP		(3,263)		0
Other		0		0
Investments, ending		459,374		232,240
Joint Ventures | Cantareira
DisclosureOfInvestmentsLineItems [Line Items]
Investments, beginning		161,855		60,105
Equity		3,879		5,155
Equity valuation adjustments				0
Investment/advance for future capital increase		35,205		97,431
Amortization		0		0
Proposed dividends and JCP		(921)		(836)
Other		0		0
Investments, ending		R$ 200,018		R$ 161,855

[1] Transfer to Other temporary investments at 11.24.2016.

[2] Of the total amount of R$75,814, R$73,361 refers to capital decrease and R$2,453 refers to the change in the investment of a Joint venture to an Associate.

[3] The amount of (R$74,983) refers to the capital reduction of the investee.

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18. Investments (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
DisclosureOfSummarizedFinancialInformationSubsidiariesWithNoncontrollingInterestLineItems [Line Items]
ASSETS	R$ 33,162,377	R$ 30,288,900	R$ 28,843,671
Current assets	5,701,834	4,237,241	6,821,637
Noncurrent assets	27,460,543	26,051,659	22,022,034
LIABILITIES		30,288,900	28,843,671
Current liabilities	6,109,914	5,656,036	4,789,118
Noncurrent liabilities	11,541,960	9,654,722	9,574,061
Equity	15,510,503	14,978,142	14,480,492	R$ 13,682,780
STATEMENT OF INCOME
Operating revenues	14,024,573	13,101,753	14,945,844
Operating costs and expenses	10,665,890	10,234,115	11,799,316
Financial results	(748,440)	(594,656)	(427,702)
Equity in income of subsidiaries	101,739	166,411	87,590
Income tax and social contribution	274,686	519,690	532,229
Net income (loss)	1,118,255	874,472	1,161,565
Total comprehensive income	1,086,917	817,271	1,452,909
STATEMENTS OF CASH FLOWS
Cash flows from operational activities	989,206	1,476,818	1,320,728
Cash flows from investiment activities	(1,581,173)	(2,511,075)	(1,951,618)
Cash flows from financing activities	649,969	535,603	1,371,486
TOTAL EFFECTS ON CASH AND CASH EQUIVALENTS	58,002	(498,654)	740,596
Cash and cash equivalents at the beginning of the period	982,073	1,480,727	740,131
Cash and cash equivalents at the end of the period	1,040,075	982,073	1,480,727
CHANGE IN CASH AND CASH EQUIVALENTS	58,002	(498,654)	740,596
Compagas
DisclosureOfSummarizedFinancialInformationSubsidiariesWithNoncontrollingInterestLineItems [Line Items]
ASSETS	632,910	526,477
Current assets	151,966	135,292
Noncurrent assets	480,944	391,185
LIABILITIES	632,910	526,477
Current liabilities	147,743	180,133
Noncurrent liabilities	87,409	46,716
Equity	397,758	299,628
STATEMENT OF INCOME
Operating revenues	515,563	542,822
Operating costs and expenses	(309,213)	(534,817)
Financial results	(25,612)	(1,422)
Equity in income of subsidiaries	0	0
Income tax and social contribution	(66,785)	(1,632)
Net income (loss)	113,953	4,951
Other comprehensive income	(251)	132
Total comprehensive income	113,702	5,083
STATEMENTS OF CASH FLOWS
Cash flows from operational activities	83,661	32,714
Cash flows from investiment activities	(14,268)	(25,975)
Cash flows from financing activities	(20,623)	(751)
TOTAL EFFECTS ON CASH AND CASH EQUIVALENTS	48,770	5,988
Cash and cash equivalents at the beginning of the period	35,309	29,321
Cash and cash equivalents at the end of the period	84,079	35,309	29,321
CHANGE IN CASH AND CASH EQUIVALENTS	48,770	5,988
Elejor
DisclosureOfSummarizedFinancialInformationSubsidiariesWithNoncontrollingInterestLineItems [Line Items]
ASSETS	675,450	708,688
Current assets	77,216	76,231
Noncurrent assets	598,234	632,457
LIABILITIES	675,450	708,688
Current liabilities	164,574	142,222
Noncurrent liabilities	449,149	486,765
Equity	61,727	79,701
STATEMENT OF INCOME
Operating revenues	291,597	263,686
Operating costs and expenses	(93,230)	(96,321)
Financial results	(54,254)	(93,717)
Equity in income of subsidiaries	0	0
Income tax and social contribution	(47,893)	(24,525)
Net income (loss)	96,220	49,123
Other comprehensive income	0	0
Total comprehensive income	96,220	49,123
STATEMENTS OF CASH FLOWS
Cash flows from operational activities	143,911	104,136
Cash flows from investiment activities	(1,461)	(1,465)
Cash flows from financing activities	(143,028)	(105,843)
TOTAL EFFECTS ON CASH AND CASH EQUIVALENTS	(578)	(3,172)
Cash and cash equivalents at the beginning of the period	38,483	41,655
Cash and cash equivalents at the end of the period	37,905	38,483	41,655
CHANGE IN CASH AND CASH EQUIVALENTS	(578)	(3,172)
UEG Araucária
DisclosureOfSummarizedFinancialInformationSubsidiariesWithNoncontrollingInterestLineItems [Line Items]
ASSETS	507,060	529,251	944,521
Current assets	99,101	162,814	563,018
Noncurrent assets	407,959	366,437	381,503
LIABILITIES	507,060	529,251	944,521
Current liabilities	38,386	62,253	173,420
Noncurrent liabilities	22,470	20,422	16,847
Equity	446,204	446,576	754,254
STATEMENT OF INCOME
Operating revenues	129,084	57,432	1,434,180
Operating costs and expenses	(121,883)	(259,324)	(1,120,473)
Financial results	5,302	18,499	(49,186)
Equity in income of subsidiaries	(5,777)	(55,284)	(4,955)
Income tax and social contribution	(7,098)	46,358	(120,692)
Net income (loss)	(372)	(192,319)	138,874
Other comprehensive income	0	0	0
Total comprehensive income	(372)	(192,319)	138,874
STATEMENTS OF CASH FLOWS
Cash flows from operational activities	(86,840)	65,203	374,658
Cash flows from investiment activities	118,460	21,587	7,904
Cash flows from financing activities	0	(200,000)	(252,670)
TOTAL EFFECTS ON CASH AND CASH EQUIVALENTS	31,620	(113,210)	129,892
Cash and cash equivalents at the beginning of the period	19,644	132,854	2,962
Cash and cash equivalents at the end of the period	51,264	19,644	132,854
CHANGE IN CASH AND CASH EQUIVALENTS	R$ 31,620	R$ (113,210)	R$ 129,892

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18. Investments (Details 2) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfChangesInEquityAttributableToNoncontrollingShareholdersLineItems [Line Items]
Equity attributable to non-controlling shareholders, beginning	R$ 260,044	R$ 317,953	R$ 352,091
Income (loss) for the year	84,629	(21,300)	52,016
Other comprehensive income	(123)	65	495
Deliberation of additional dividends proposed	(11,053)	(23,072)
Distribution of dividends with retained earnings		(9,342)
Dividends	(30,836)	(4,260)	(86,649)
Equity attributable to non-controlling shareholders, ending	302,661	260,044	317,953
Compagas
DisclosureOfChangesInEquityAttributableToNoncontrollingShareholdersLineItems [Line Items]
Equity attributable to non-controlling shareholders, beginning	146,818	144,904	136,233
Income (loss) for the year	55,837	2,425	11,304
Other comprehensive income	(123)	65	495
Deliberation of additional dividends proposed	0	0
Distribution of dividends with retained earnings		0
Dividends	(7,631)	(576)	(3,128)
Equity attributable to non-controlling shareholders, ending	194,901	146,818	144,904
Elejor
DisclosureOfChangesInEquityAttributableToNoncontrollingShareholdersLineItems [Line Items]
Equity attributable to non-controlling shareholders, beginning	23,910	22,200	25,445
Income (loss) for the year	28,866	14,736	12,937
Other comprehensive income	0	0	0
Deliberation of additional dividends proposed	(11,053)	0
Distribution of dividends with retained earnings		(9,342)
Dividends	(23,205)	(3,684)	(16,182)
Equity attributable to non-controlling shareholders, ending	18,518	23,910	22,200
UEG Araucária
DisclosureOfChangesInEquityAttributableToNoncontrollingShareholdersLineItems [Line Items]
Equity attributable to non-controlling shareholders, beginning	89,316	150,849	190,413
Income (loss) for the year	(74)	(38,461)	27,775
Other comprehensive income	0	0	0
Deliberation of additional dividends proposed	0	(23,072)
Distribution of dividends with retained earnings		0
Dividends	0	0	(67,339)
Equity attributable to non-controlling shareholders, ending	R$ 89,242	R$ 89,316	R$ 150,849

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18. Investments (Details 3) - BRL (R$) R$ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure of joint ventures [line items]
ASSETS		R$ 33,162,377	R$ 30,288,900	R$ 28,843,671
Current assets		5,701,834	4,237,241	6,821,637
Cash and cash equivalents		1,040,075	982,073	1,480,727	R$ 740,131
Noncurrent assets		27,460,543	26,051,659	22,022,034
LIABILITIES			30,288,900	28,843,671
Current liabilities		6,109,914	5,656,036	4,789,118
Noncurrent liabilities		11,541,960	9,654,722	9,574,061
Equity		15,510,503	14,978,142	14,480,492	R$ 13,682,780
STATEMENT OF INCOME
Net operating revenues		14,024,573	13,101,753	14,945,844
Operating costs and expenses		10,665,890	10,234,115	11,799,316
Financial results		(748,440)	594,656	427,702
Equity in income of subsidiaries		101,739	166,411	87,590
Income tax and social contribution		274,686	519,690	532,229
Net income (loss)		1,118,255	874,472	1,161,565
Total comprehensive income		1,086,917	817,271	R$ 1,452,909
Dominó
Disclosure of joint ventures [line items]
ASSETS	[1]		180,049
Current assets	[1]		24,725
Cash and cash equivalents	[1]		5,340
Other current assets	[1]		19,385
Noncurrent assets	[1]		155,324
LIABILITIES	[1]		180,049
Current liabilities	[1]		13,669
Financial liabilities	[1]		0
Other current liabilities	[1]		13,669
Noncurrent liabilities	[1]		0
Financial liabilities	[1]		0
Other noncurrent liabilities	[1]		0
Equity	[1]		166,380
STATEMENT OF INCOME
Net operating revenues	[1]		0
Operating costs and expenses	[1]		(969)
Financial results	[1]		(24,062)
Equity in income of subsidiaries	[1]		101,543
Income tax and social contribution	[1]		0
Net income (loss)	[1]		76,512
Other comprehensive income	[1]		(9,669)
Total comprehensive income	[1]		R$ 66,843
Investment interest - %	[1]		49.00%
Investment book value	[1]		R$ 81,526
Voltalia
Disclosure of joint ventures [line items]
ASSETS		155,272	156,422
Current assets		2,141	2,177
Cash and cash equivalents		3	41
Other current assets		2,138	2,136
Noncurrent assets		153,131	154,245
LIABILITIES		155,272	156,422
Current liabilities		2,214	2,212
Financial liabilities		0	0
Other current liabilities		2,214	2,212
Noncurrent liabilities		0	0
Financial liabilities		0	0
Other noncurrent liabilities		0	0
Equity		153,058	154,210
STATEMENT OF INCOME
Net operating revenues		0	0
Operating costs and expenses		(113)	(122)
Financial results		9	5
Equity in income of subsidiaries		(1,048)	8,987
Income tax and social contribution		0	0
Net income (loss)		(1,152)	8,870
Other comprehensive income		0	0
Total comprehensive income		R$ (1,152)	R$ 8,870
Investment interest - %		49.00%	49.00%
Investment book value		R$ 74,998	R$ 75,563
Costa Oeste
Disclosure of joint ventures [line items]
ASSETS		99,028	112,601
Current assets		7,791	9,892
Cash and cash equivalents		2,685	4,323
Other current assets		5,106	5,569
Noncurrent assets		91,237	102,709
LIABILITIES		99,028	112,601
Current liabilities		3,817	8,003
Financial liabilities		3,124	3,110
Other current liabilities		693	4,893
Noncurrent liabilities		29,239	31,594
Financial liabilities		24,751	27,426
Other noncurrent liabilities		4,488	4,168
Equity		65,972	73,004
STATEMENT OF INCOME
Net operating revenues		11,837	20,433
Operating costs and expenses		(15,765)	(3,341)
Financial results		(1,841)	(1,213)
Equity in income of subsidiaries		0	0
Income tax and social contribution		737	(1,426)
Net income (loss)		(5,032)	14,453
Other comprehensive income		0	0
Total comprehensive income		R$ (5,032)	R$ 14,453
Investment interest - %		51.00%	51.00%
Investment book value		R$ 33,646	R$ 37,232
Marumbi
Disclosure of joint ventures [line items]
ASSETS		162,155	185,888
Current assets		10,314	12,614
Cash and cash equivalents		1,949	3,324
Other current assets		8,365	9,290
Noncurrent assets		151,841	173,274
LIABILITIES		162,155	185,888
Current liabilities		6,386	17,760
Financial liabilities		5,220	5,190
Other current liabilities		1,166	12,570
Noncurrent liabilities		49,093	49,531
Financial liabilities		38,651	43,171
Other noncurrent liabilities		10,442	6,360
Equity		106,676	118,597
STATEMENT OF INCOME
Net operating revenues		19,498	37,559
Operating costs and expenses		(29,086)	(11,906)
Financial results		(3,140)	(3,596)
Equity in income of subsidiaries		0	0
Income tax and social contribution		807	(1,822)
Net income (loss)		(11,921)	20,235
Other comprehensive income		0	0
Total comprehensive income		R$ (11,921)	R$ 20,235
Investment interest - %		80.00%	80.00%
Investment book value		R$ 85,341	R$ 94,878
Transmissora Sul Brasileira
Disclosure of joint ventures [line items]
ASSETS		659,464	696,381
Current assets		56,604	51,963
Cash and cash equivalents		25,547	23,295
Other current assets		31,057	28,668
Noncurrent assets		602,860	644,418
LIABILITIES		659,464	696,381
Current liabilities		220,845	33,949
Financial liabilities		212,618	25,153
Other current liabilities		8,227	8,796
Noncurrent liabilities		116,818	315,589
Financial liabilities		106,174	308,859
Other noncurrent liabilities		10,644	6,730
Equity		321,801	346,843
STATEMENT OF INCOME
Net operating revenues		53,374	56,553
Operating costs and expenses		(63,752)	(12,042)
Financial results		(26,994)	(32,674)
Equity in income of subsidiaries		0	0
Income tax and social contribution		12,330	(2,810)
Net income (loss)		(25,042)	9,027
Other comprehensive income		0	0
Total comprehensive income		R$ (25,042)	R$ 9,027
Investment interest - %		20.00%	20.00%
Investment book value		R$ 64,360	R$ 69,369
Caiuá
Disclosure of joint ventures [line items]
ASSETS		230,743	255,276
Current assets		22,895	26,820
Cash and cash equivalents		1,626	1,435
Other current assets		21,269	25,385
Noncurrent assets		207,848	228,456
LIABILITIES		230,743	255,276
Current liabilities		23,608	26,776
Financial liabilities		7,427	7,387
Other current liabilities		16,181	19,389
Noncurrent liabilities		92,774	105,934
Financial liabilities		64,081	70,633
Other noncurrent liabilities		28,693	35,301
Equity		114,361	122,566
STATEMENT OF INCOME
Net operating revenues		(2,904)	38,148
Operating costs and expenses		(5,194)	(4,008)
Financial results		(6,017)	(6,432)
Equity in income of subsidiaries		0	0
Income tax and social contribution		5,908	(11,355)
Net income (loss)		(8,207)	16,353
Other comprehensive income		0	0
Total comprehensive income		R$ (8,207)	R$ 16,353
Investment interest - %		49.00%	49.00%
Investment book value		R$ 56,037	R$ 60,057
Integração Maranhense
Disclosure of joint ventures [line items]
ASSETS		466,783	513,186
Current assets		44,594	49,355
Cash and cash equivalents		2,224	115
Other current assets		42,370	49,240
Noncurrent assets		422,189	463,831
LIABILITIES		466,783	513,186
Current liabilities		71,563	76,137
Financial liabilities		13,240	13,188
Other current liabilities		58,323	62,949
Noncurrent liabilities		163,790	187,554
Financial liabilities		103,755	115,732
Other noncurrent liabilities		60,035	71,822
Equity		231,430	249,495
STATEMENT OF INCOME
Net operating revenues		(14,460)	64,428
Operating costs and expenses		(4,245)	(2,851)
Financial results		(9,070)	(10,934)
Equity in income of subsidiaries		0	0
Income tax and social contribution		9,709	(18,125)
Net income (loss)		(18,066)	32,518
Other comprehensive income		0	0
Total comprehensive income		R$ (18,066)	R$ 32,518
Investment interest - %		49.00%	49.00%
Investment book value		R$ 113,401	R$ 122,253
Matrinchã
Disclosure of joint ventures [line items]
ASSETS		2,774,973	2,583,118
Current assets		297,331	273,185
Cash and cash equivalents		116,256	118,196
Other current assets		181,075	154,989
Noncurrent assets		2,477,642	2,309,933
LIABILITIES		2,774,973	2,583,118
Current liabilities		140,515	120,886
Financial liabilities		48,686	52,625
Other current liabilities		91,829	68,261
Noncurrent liabilities		928,706	845,764
Financial liabilities		712,198	747,709
Other noncurrent liabilities		216,508	98,055
Equity		1,705,752	1,616,468
STATEMENT OF INCOME
Net operating revenues		403,891	433,833
Operating costs and expenses		(183,660)	(237,779)
Financial results		(47,331)	(66,462)
Equity in income of subsidiaries		0	0
Income tax and social contribution		(55,808)	(44,061)
Net income (loss)		117,092	85,531
Other comprehensive income		0	0
Total comprehensive income		R$ 117,092	R$ 85,531
Investment interest - %		49.00%	49.00%
Investment book value		R$ 835,819	R$ 792,069
Guaraciaba
Disclosure of joint ventures [line items]
ASSETS		1,428,247	1,247,036
Current assets		139,920	107,429
Cash and cash equivalents		34,364	16,284
Other current assets		105,556	91,145
Noncurrent assets		1,288,327	1,139,607
LIABILITIES		1,428,247	1,247,036
Current liabilities		71,818	41,099
Financial liabilities		32,627	9,928
Other current liabilities		39,191	31,171
Noncurrent liabilities		502,713	391,712
Financial liabilities		388,806	378,528
Other noncurrent liabilities		113,907	13,184
Equity		853,716	814,225
STATEMENT OF INCOME
Net operating revenues		208,444	310,380
Operating costs and expenses		(93,369)	(204,412)
Financial results		(36,981)	(73,693)
Equity in income of subsidiaries		0	0
Income tax and social contribution		(26,303)	(9,429)
Net income (loss)		51,791	22,846
Other comprehensive income		0	0
Total comprehensive income		R$ 51,791	R$ 22,846
Investment interest - %		49.00%	49.00%
Investment book value		R$ 418,320	R$ 398,969
Paranaíba
Disclosure of joint ventures [line items]
ASSETS		1,698,213	1,284,733
Current assets		233,065	41,648
Cash and cash equivalents		29,066	3,051
Other current assets		203,999	38,597
Noncurrent assets		1,465,148	1,243,085
LIABILITIES		1,698,213	1,284,733
Current liabilities		124,764	83,078
Financial liabilities		53,317	45,939
Other current liabilities		71,447	37,139
Noncurrent liabilities		911,107	600,784
Financial liabilities		638,779	561,700
Other noncurrent liabilities		272,328	39,084
Equity		662,342	600,871
STATEMENT OF INCOME
Net operating revenues		320,302	322,855
Operating costs and expenses		(150,984)	(185,789)
Financial results		(59,132)	(58,703)
Equity in income of subsidiaries		0	0
Income tax and social contribution		(40,717)	(25,924)
Net income (loss)		69,469	52,439
Other comprehensive income		0	0
Total comprehensive income		R$ 69,469	R$ 52,439
Investment interest - %		24.50%	24.50%
Investment book value		R$ 162,273	R$ 147,213
Mata de Santa Genebra
Disclosure of joint ventures [line items]
ASSETS		1,722,063	1,050,330
Current assets		107,568	59,160
Cash and cash equivalents		96,244	47,792
Other current assets		11,324	11,368
Noncurrent assets		1,614,495	991,170
LIABILITIES		1,722,063	1,050,330
Current liabilities		12,630	523,351
Financial liabilities		0	489,017
Other current liabilities		12,630	34,334
Noncurrent liabilities		792,519	63,427
Financial liabilities		703,897	0
Other noncurrent liabilities		88,622	63,427
Equity		916,914	463,552
STATEMENT OF INCOME
Net operating revenues		588,123	570,237
Operating costs and expenses		(434,779)	(497,852)
Financial results		(94,512)	(80,255)
Equity in income of subsidiaries		0	0
Income tax and social contribution		(19,955)	2,724
Net income (loss)		38,877	(5,146)
Other comprehensive income		0	0
Total comprehensive income		R$ 38,877	R$ (5,146)
Investment interest - %		50.10%	50.10%
Investment book value		R$ 459,374	R$ 232,240
Cantareira
Disclosure of joint ventures [line items]
ASSETS		952,670	525,446
Current assets		6,046	1,242
Cash and cash equivalents		5,169	157
Other current assets		877	1,085
Noncurrent assets		946,624	524,204
LIABILITIES		952,670	525,446
Current liabilities		9,706	140,759
Financial liabilities		0	65,697
Other current liabilities		9,706	75,062
Noncurrent liabilities		534,764	54,373
Financial liabilities		439,192	0
Other noncurrent liabilities		95,572	54,373
Equity		408,200	330,314
STATEMENT OF INCOME
Net operating revenues		392,766	337,614
Operating costs and expenses		(347,771)	(321,966)
Financial results		(35,207)	225
Equity in income of subsidiaries		0	0
Income tax and social contribution		(1,871)	(5,354)
Net income (loss)		7,917	10,519
Other comprehensive income		0	0
Total comprehensive income		R$ 7,917	R$ 10,519
Investment interest - %		49.00%	49.00%
Investment book value		R$ 200,018	R$ 161,855

[1] Balances adjusted to accounting practices.

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18. Investments (Details 4) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure of associates [line items]
Assets	R$ 33,162,377	R$ 30,288,900	R$ 28,843,671
Current assets	5,701,834	4,237,241	6,821,637
Noncurrent assets	27,460,543	26,051,659	22,022,034
LIABILITIES		30,288,900	28,843,671
Current liabilities	6,109,914	5,656,036	4,789,118
Noncurrent liabilities	11,541,960	9,654,722	9,574,061
Equity	15,510,503	14,978,142	14,480,492	R$ 13,682,780
STATEMENT OF INCOME
Net operating revenues	14,024,573	13,101,753	14,945,844
Operating costs and expenses	10,665,890	10,234,115	11,799,316
Financial income (expense)	(748,440)	594,656	427,702
Income tax and social contribution	274,686	519,690	532,229
Net income (loss)	1,118,255	874,472	1,161,565
Total comprehensive income	1,086,917	817,271	R$ 1,452,909
Dona Francisca
Disclosure of associates [line items]
Assets	138,079	151,563
Current assets	10,304	19,311
Noncurrent assets	127,775	132,252
LIABILITIES	138,079	151,563
Current liabilities	4,144	5,306
Noncurrent liabilities	4,443	3,982
Equity	129,492	142,275
STATEMENT OF INCOME
Net operating revenues	70,716	70,208
Operating costs and expenses	(30,379)	(34,074)
Financial income (expense)	835	1,453
Income tax and social contribution	(2,632)	(3,275)
Net income (loss)	38,540	34,312
Other comprehensive income	0	0
Total comprehensive income	R$ 38,540	R$ 34,312
Investment interest - %	23.0303%	23.0303%
Investment book value	R$ 29,821	R$ 32,766
Foz do Chopim
Disclosure of associates [line items]
Assets	61,163	48,937
Current assets	21,553	11,043
Noncurrent assets	39,610	37,894
LIABILITIES	61,163	48,937
Current liabilities	1,808	2,336
Noncurrent liabilities	22,776	7,553
Equity	36,579	39,048
STATEMENT OF INCOME
Net operating revenues	40,441	40,762
Operating costs and expenses	(21,124)	(10,130)
Financial income (expense)	809	795
Income tax and social contribution	(1,547)	(1,580)
Net income (loss)	18,579	29,847
Other comprehensive income	0	0
Total comprehensive income	R$ 18,579	R$ 29,847
Investment interest - %	35.77%	35.77%
Investment book value	R$ 13,084	R$ 13,967

XML

19. Property, Plant and Equipment (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	R$ 17,620,597	R$ 16,515,431
Accumulated depreciation	(7,791,147)	(7,581,128)
Property, plant and equipment, ending	9,829,450	8,934,303
In service
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	13,807,942	13,681,833
Accumulated depreciation	(7,791,147)	(7,581,128)
Property, plant and equipment, ending	6,016,795	6,100,705
In service | Reservoirs, dams and aqueducts
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	6,638,348	6,595,895
Accumulated depreciation	(4,071,621)	(3,912,383)
Property, plant and equipment, ending	2,566,727	2,683,512
In service | Machinery and equipment
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	5,320,736	5,309,674
Accumulated depreciation	(2,654,801)	(2,645,702)
Property, plant and equipment, ending	2,665,935	2,663,972
In service | Buildings
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	1,500,144	1,498,841
Accumulated depreciation	(989,221)	(954,470)
Property, plant and equipment, ending	510,923	544,372
In service | Land
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	277,665	277,112
Accumulated depreciation	(15,287)	(12,351)
Property, plant and equipment, ending	262,378	264,761
In service | Vehicles and aircraft
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	59,101	60,914
Accumulated depreciation	(48,759)	(45,243)
Property, plant and equipment, ending	10,342	15,671
In service | Furniture and tools
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	16,990	16,771
Accumulated depreciation	(11,476)	(10,989)
Property, plant and equipment, ending	5,514	5,782
In service | Provision for impairment
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	(4,986)	(77,318)
Accumulated depreciation	0	0
Property, plant and equipment, ending	(4,986)	(77,318)
In service | Special Obligations
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	(56)	(56)
Accumulated depreciation	18	10
Property, plant and equipment, ending	(38)	(46)
In progress
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	3,812,655	2,833,598
Accumulated depreciation	0	0
Property, plant and equipment, ending	3,812,655	2,833,598
In progress | Provision for impairment
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	(1,210,358)	(1,136,105)
Accumulated depreciation	0	0
Property, plant and equipment, ending	(1,210,358)	(1,136,105)
In progress | Cost
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, cost	5,023,013	3,969,703
Accumulated depreciation	0	0
Property, plant and equipment, ending	R$ 5,023,013	R$ 3,969,703

XML

19. Property, Plant and Equipment (Details 1) - BRL (R$) R$ 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]
Property, plant and equipment, beginning	R$ 8,934,303	R$ 8,692,682
Additions	1,316,415	807,833	R$ 825,722
Depreciation	(379,041)	(374,109)
Disposal	(64,508)	(27,402)
Transfers	22,281	(164,701)
Property, plant and equipment, ending	9,829,450	8,934,303	8,692,682
In service
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning	6,100,705	6,545,909
Additions	72,332	(62,223)
Depreciation	(379,041)	(374,109)
Disposal	(40,639)	(13,822)
Transfers	263,438	4,950
Property, plant and equipment, ending	6,016,795	6,100,705	6,545,909
In service | Reservoirs, dams and aqueducts
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning	2,683,512	2,830,290
Additions	0	0
Depreciation	(144,484)	(142,986)
Disposal	(2,160)	(555)
Transfers	29,859	(3,237)
Property, plant and equipment, ending	2,566,727	2,683,512	2,830,290
In service | Machinery and equipment
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning	2,663,972	2,855,110
Additions	0	0
Depreciation	(188,988)	(185,254)
Disposal	(37,685)	(11,143)
Transfers	228,637	5,259
Property, plant and equipment, ending	2,665,935	2,663,972	2,855,110
In service | Buildings
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning	544,372	581,554
Additions	0	0
Depreciation	(36,347)	(37,246)
Disposal	(773)	(1,971)
Transfers	3,671	2,034
Property, plant and equipment, ending	510,923	544,372	581,554
In service | Land
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning	264,761	267,623
Additions	0	0
Depreciation	(2,935)	(2,935)
Disposal	(3)	(7)
Transfers	555	80
Property, plant and equipment, ending	262,378	264,761	267,623
In service | Vehicles and aircraft
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning	15,671	20,205
Additions	0	0
Depreciation	(5,492)	(4,861)
Disposal	(6)	(142)
Transfers	169	469
Property, plant and equipment, ending	10,342	15,671	20,205
In service | Furniture and tools
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning	5,782	6,236
Additions	0	0
Depreciation	(803)	(835)
Disposal	(12)	(4)
Transfers	547	385
Property, plant and equipment, ending	5,514	5,782	6,236
In service | Provision for impairment
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning	(77,318)	(15,095)
Additions	72,332	(62,223)
Depreciation	0	0
Disposal	0	0
Transfers	0	0
Property, plant and equipment, ending	(4,986)	(77,318)	(15,095)
In service | Special Obligations
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning	(46)	(14)
Additions	0	0
Depreciation	8	8
Disposal	0	0
Transfers	0	(40)
Property, plant and equipment, ending	(38)	(46)	(14)
In progress
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning	2,833,598	2,146,773
Additions	1,244,083	870,056
Depreciation	0	0
Disposal	(23,869)	(13,580)
Transfers	(241,157)	(169,651)
Property, plant and equipment, ending	3,812,655	2,833,598	2,146,773
In progress | Provision for impairment
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning	(1,136,105)	(704,305)
Additions	(74,253)	(431,800)
Depreciation	0	0
Disposal	0	0
Transfers	0	0
Property, plant and equipment, ending	(1,210,358)	(1,136,105)	(704,305)
In progress | Cost
Disclosure of detailed information about property, plant and equipment [line items]
Property, plant and equipment, beginning	3,969,703	2,851,078
Additions	1,318,336	1,301,856
Depreciation	0	0
Disposal	(23,869)	(13,580)
Transfers	(241,157)	(169,651)
Property, plant and equipment, ending	R$ 5,023,013	R$ 3,969,703	R$ 2,851,078

XML

19. Property, Plant and Equipment (Details 2)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Generation | General equipment
DisclosureOfAverageDepreciationRatesLineItems [Line Items]
Average rate of depreciation	6.33%	6.31%
Generation | Machinery and equipment
DisclosureOfAverageDepreciationRatesLineItems [Line Items]
Average rate of depreciation	3.59%	2.29%
Generation | Generators
DisclosureOfAverageDepreciationRatesLineItems [Line Items]
Average rate of depreciation	3.21%	3.04%
Generation | Reservoirs, dams and aqueducts
DisclosureOfAverageDepreciationRatesLineItems [Line Items]
Average rate of depreciation	2.11%	2.13%
Generation | Hydraulic turbines
DisclosureOfAverageDepreciationRatesLineItems [Line Items]
Average rate of depreciation	2.61%	2.57%
Generation | Gas and steam turbines
DisclosureOfAverageDepreciationRatesLineItems [Line Items]
Average rate of depreciation	2.30%	2.30%
Generation | Water cooling and treatment
DisclosureOfAverageDepreciationRatesLineItems [Line Items]
Average rate of depreciation	4.00%	3.99%
Generation | Gas conditioner
DisclosureOfAverageDepreciationRatesLineItems [Line Items]
Average rate of depreciation	4.00%	3.66%
Generation | Wind power plant unit
DisclosureOfAverageDepreciationRatesLineItems [Line Items]
Average rate of depreciation	3.85%	3.85%
Central management | Buildings
DisclosureOfAverageDepreciationRatesLineItems [Line Items]
Average rate of depreciation	3.33%	3.33%
Central management | Machinery and office equipment
DisclosureOfAverageDepreciationRatesLineItems [Line Items]
Average rate of depreciation	6.25%	6.25%
Central management | Furniture and fixtures
DisclosureOfAverageDepreciationRatesLineItems [Line Items]
Average rate of depreciation	6.25%	6.25%
Central management | Vehicles
DisclosureOfAverageDepreciationRatesLineItems [Line Items]
Average rate of depreciation	14.29%	14.29%
Telecommunications | Transmission equipment
DisclosureOfAverageDepreciationRatesLineItems [Line Items]
Average rate of depreciation	6.36%	6.90%
Telecommunications | Terminal equipment
DisclosureOfAverageDepreciationRatesLineItems [Line Items]
Average rate of depreciation	12.09%	13.41%
Telecommunications | Infrastructure
DisclosureOfAverageDepreciationRatesLineItems [Line Items]
Average rate of depreciation	7.45%	7.43%

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19. Property, Plant and Equipment (Details 3) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of joint operations [line items]
Joint operations	R$ 1,353,009	R$ 1,132,712
In service
Disclosure of joint operations [line items]
Joint operations	R$ 712,831	742,292
In service | HPP Mauá (Consórcio Energético Cruzeiro do Sul)
Disclosure of joint operations [line items]
Share	51.00%
Joint operations	R$ 859,917	859,917
In service | Accumulated depreciation
Disclosure of joint operations [line items]
Annual average depreciation rate	3.43%
Joint operations	R$ (147,085)	(117,625)
In progress
Disclosure of joint operations [line items]
Joint operations	R$ 640,178	390,420
In progress | HPP Baixo Iguaçu
Disclosure of joint operations [line items]
Share	30.00%
Joint operations	R$ 640,178	R$ 390,420

XML

19. Property, Plant and Equipment (Details 4) - BRL (R$) R$ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016
Disclosure of detailed information about property, plant and equipment [line items]
Property, Plant and Equipment, Depreciation		R$ (7,791,147)	R$ (7,581,128)
Property, Plant and Equipment, Impairment		(1,921)	(494,023)
Projects
Disclosure of detailed information about property, plant and equipment [line items]
Property, Plant and Equipment, Cost		4,397,211
Property, Plant and Equipment, Depreciation		(61,602)
Property, Plant and Equipment, Impairment		(1,215,344)
Property, Plant and Equipment, Value in use		3,120,265	4,397,211
Projects | HPP Colíder
Disclosure of detailed information about property, plant and equipment [line items]
Property, Plant and Equipment, Cost	[1]	2,217,391
Property, Plant and Equipment, Depreciation	[1]	(1,859)
Property, Plant and Equipment, Impairment	[1]	(683,021)
Property, Plant and Equipment, Value in use	[1]	1,532,511	2,217,391
Projects | Wind power complex Cutia
Disclosure of detailed information about property, plant and equipment [line items]
Property, Plant and Equipment, Cost	[1]	1,083,474
Property, Plant and Equipment, Depreciation	[1]	0
Property, Plant and Equipment, Impairment	[1]	(224,510)
Property, Plant and Equipment, Value in use	[1]	858,964	1,083,474
Projects | Wind power complex Bento Miguel
Disclosure of detailed information about property, plant and equipment [line items]
Property, Plant and Equipment, Cost	[1]	217,121
Property, Plant and Equipment, Depreciation	[1]	0
Property, Plant and Equipment, Impairment	[1]	(98,231)
Property, Plant and Equipment, Value in use	[1]	118,890	217,121
Projects | Consórcio Tapajós
Disclosure of detailed information about property, plant and equipment [line items]
Property, Plant and Equipment, Cost	[2]	14,464
Property, Plant and Equipment, Depreciation	[2]	0
Property, Plant and Equipment, Impairment	[2]	(14,464)
Property, Plant and Equipment, Value in use	[2]	0	14,464
Projects | Power plants in Paraná
Disclosure of detailed information about property, plant and equipment [line items]
Property, Plant and Equipment, Cost	[1]	864,761
Property, Plant and Equipment, Depreciation	[1]	(59,743)
Property, Plant and Equipment, Impairment	[1]	(195,118)
Property, Plant and Equipment, Value in use	[1]	R$ 609,900	R$ 864,761

[1] Under construction.

[2] Project under development.

XML

19. Property, Plant and Equipment (Details 5) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
DisclosureOfRecoverableValueOfAssetsTableLineItems [Line Items]
Impairment, beginning	R$ (1,213,423)	R$ (719,400)
Impairment at the year	(1,921)	(494,023)
Impairment, ending	(1,215,344)	(1,213,423)
In service
DisclosureOfRecoverableValueOfAssetsTableLineItems [Line Items]
Impairment, beginning	(77,318)	(15,095)
Impairment at the year	72,332	(62,223)
Impairment, ending	(4,986)	(77,318)
In service | UEG Araucária
DisclosureOfRecoverableValueOfAssetsTableLineItems [Line Items]
Impairment, beginning	(69,073)	0
Impairment at the year	69,073	(69,073)
Impairment, ending	0	(69,073)
In service | Power plants in Paraná
DisclosureOfRecoverableValueOfAssetsTableLineItems [Line Items]
Impairment, beginning	(8,245)	(15,095)
Impairment at the year	3,259	6,850
Impairment, ending	(4,986)	(8,245)
In progress
DisclosureOfRecoverableValueOfAssetsTableLineItems [Line Items]
Impairment, beginning	(1,136,105)	(704,305)
Impairment at the year	(74,253)	(431,800)
Impairment, ending	(1,210,358)	(1,136,105)
In progress | Power plants in Paraná
DisclosureOfRecoverableValueOfAssetsTableLineItems [Line Items]
Impairment, beginning	(211,688)	(61,754)
Impairment at the year	21,556	(149,934)
Impairment, ending	(190,132)	(211,688)
In progress | HPP Colíder
DisclosureOfRecoverableValueOfAssetsTableLineItems [Line Items]
Impairment, beginning	(595,489)	(642,551)
Impairment at the year	(87,532)	47,062
Impairment, ending	(683,021)	(595,489)
In progress | Wind power complex Cutia
DisclosureOfRecoverableValueOfAssetsTableLineItems [Line Items]
Impairment, beginning	(232,827)	0
Impairment at the year	8,317	(232,827)
Impairment, ending	(224,510)	(232,827)
In progress | Wind power complex Bento Miguel
DisclosureOfRecoverableValueOfAssetsTableLineItems [Line Items]
Impairment, beginning	(81,637)	0
Impairment at the year	(16,594)	(81,637)
Impairment, ending	(98,231)	(81,637)
In progress | Consórcio Tapajós
DisclosureOfRecoverableValueOfAssetsTableLineItems [Line Items]
Impairment, beginning	(14,464)	0
Impairment at the year	0	(14,464)
Impairment, ending	R$ (14,464)	R$ (14,464)

XML

19. Property, Plant and Equipment (Details 6) R$ in Thousands	12 Months Ended
	Dec. 31, 2017 BRL (R$)
Complexo EOL São Bento
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	7.11%
VR/VC-1	55.28%
VR/VC-1 (5% Variation)	50.63%
VR/VC-1 (10% Variation)	46.20%
Impairment Risk	R$ 0
Complexo EOL Brisa I
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	7.11%
VR/VC-1	37.47%
VR/VC-1 (5% Variation)	33.37%
VR/VC-1 (10% Variation)	29.70%
Impairment Risk	R$ 0
Complexo EOL Brisa II
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	7.11%
VR/VC-1	8.26%
VR/VC-1 (5% Variation)	4.32%
VR/VC-1 (10% Variation)	0.60%
Impairment Risk	R$ 0
Complexo EOL Voltalia
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	7.11%
VR/VC-1	0.95%
VR/VC-1 (5% Variation)	(1.99%)
VR/VC-1 (10% Variation)	(4.80%)
Impairment Risk	R$ 10,772	[1]
Foz do Areia | Hydric Assets
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	8.11%
VR/VC-1	422.35%
VR/VC-1 (5% Variation)	416.91%
VR/VC-1 (10% Variation)	411.56%
Impairment Risk	R$ 0
Segredo | Hydric Assets
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	8.11%
VR/VC-1	229.15%
VR/VC-1 (5% Variation)	222.11%
VR/VC-1 (10% Variation)	215.32%
Impairment Risk	R$ 0
Caxias | Hydric Assets
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	8.11%
VR/VC-1	192.16%
VR/VC-1 (5% Variation)	185.52%
VR/VC-1 (10% Variation)	179.11%
Impairment Risk	R$ 0
Guaricana | Hydric Assets
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	8.11%
VR/VC-1	63.71%
VR/VC-1 (5% Variation)	61.10%
VR/VC-1 (10% Variation)	58.55%
Impairment Risk	R$ 0
Chaminé | Hydric Assets
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	8.11%
VR/VC-1	87.54%
VR/VC-1 (5% Variation)	84.92%
VR/VC-1 (10% Variation)	82.36%
Impairment Risk	R$ 0
Chopim I | Hydric Assets
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	8.11%
VR/VC-1	149.27%
VR/VC-1 (5% Variation)	142.63%
VR/VC-1 (10% Variation)	136.28%
Impairment Risk	R$ 0
São Jorge | Hydric Assets
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	8.11%
VR/VC-1	55.49%
VR/VC-1 (5% Variation)	53.29%
VR/VC-1 (10% Variation)	51.13%
Impairment Risk	R$ 0
Melissa | Hydric Assets
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	8.11%
VR/VC-1	122.19%
VR/VC-1 (5% Variation)	116.80%
VR/VC-1 (10% Variation)	111.63%
Impairment Risk	R$ 0
Desvio do Rio Jordão | Hydric Assets
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	8.11%
VR/VC-1	229.15%
VR/VC-1 (5% Variation)	222.11%
VR/VC-1 (10% Variation)	215.32%
Impairment Risk	R$ 0
Palmas | Hydric Assets
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	8.11%
VR/VC-1	72.85%
VR/VC-1 (5% Variation)	67.51%
VR/VC-1 (10% Variation)	62.44%
Impairment Risk	R$ 0
Elejor | Hydric Assets
Disclosure of detailed information about property, plant and equipment [line items]
Discount rate	8.11%
VR/VC-1	172.07%
VR/VC-1 (5% Variation)	165.68%
VR/VC-1 (10% Variation)	159.59%
Impairment Risk	R$ 0

[1] Impairment value of the Complex as a whole. The write-off of Copel's impairment loss consists only of the authorization rights on acquisition of R$10,772 thousand (balance at December 31, 2017).

XML

20. Intangible Assets (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of detailed information about intangible assets [line items]
Intangible Assets	R$ 6,452,824	R$ 6,459,812	R$ 6,145,076
Distribution concession agreement
Disclosure of detailed information about intangible assets [line items]
Intangible Assets	5,750,873	5,513,381	R$ 5,131,512
Generation concession agreements/authorization
Disclosure of detailed information about intangible assets [line items]
Intangible Assets	619,221	663,712
Concession agreement - gas distribution
Disclosure of detailed information about intangible assets [line items]
Intangible Assets	43,888	238,509
Others
Disclosure of detailed information about intangible assets [line items]
Intangible Assets	R$ 38,842	R$ 44,210

XML

20. Intangible Assets (Details 1) - BRL (R$) R$ in Thousands		12 Months Ended
		Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		R$ 6,459,812		R$ 6,145,076
Disposal		(42,740)		(47,434)		R$ (30,026)
Intangible assets, beginning		6,452,824		6,459,812		6,145,076
Distribution concession agreement in service
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		7,537,158		7,230,163
Acquisitions		0		0
Customers contributions		628		0
Provision for claims added to the cost of the works		0		0
Transfers from / for accounts receivable related to concession		0		(2,230)
Capitalizations for intangible in service		822,472		743,351
Amortization of quotas - concession and authorization	[1]	(411,575)		(395,255)
Amortization of quotas - PIS/Pasep and Cofins credits		(11,014)		(11,270)
Amortization of quotas appropriated in the cost of the work				(292)
Disposal		29,704		27,309
Intangible assets, beginning		7,907,965		7,537,158		7,230,163
Distribution concession agreement in progress
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		849,715		773,107
Acquisitions		757,709		892,693
Customers contributions		0		0
Provision for claims added to the cost of the works		(1,587)		3,430
Transfers from / for accounts receivable related to concession		(56,853)		(56,740)
Capitalizations for intangible in service		(822,472)		(743,351)
Amortization of quotas - concession and authorization	[1]	0		0
Amortization of quotas - PIS/Pasep and Cofins credits		0		0
Amortization of quotas appropriated in the cost of the work				292
Disposal		12,066		19,716
Intangible assets, beginning		714,446		849,715		773,107
Distribution concession agreement special liabilities in service
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		(2,845,024)		(2,830,995)
Acquisitions		0		0
Customers contributions		(579)		0
Provision for claims added to the cost of the works		0		0
Transfers from / for accounts receivable related to concession		0		0
Capitalizations for intangible in service		(128,351)		(135,104)
Amortization of quotas - concession and authorization	[1]	125,740		121,075
Amortization of quotas - PIS/Pasep and Cofins credits		0		0
Amortization of quotas appropriated in the cost of the work				0
Disposal		(2,776)		0
Intangible assets, beginning		(2,845,438)		(2,845,024)		(2,830,995)
Distribution concession agreement special liabilities in progress
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		(28,468)		(40,763)
Acquisitions		0		0
Customers contributions		(125,983)		(122,809)
Provision for claims added to the cost of the works		0		0
Transfers from / for accounts receivable related to concession		0		0
Capitalizations for intangible in service		128,351		135,104
Amortization of quotas - concession and authorization	[1]	0		0
Amortization of quotas - PIS/Pasep and Cofins credits		0		0
Amortization of quotas appropriated in the cost of the work				0
Disposal		0		0
Intangible assets, beginning		(26,100)		(28,468)		(40,763)
Distribution concession agreement
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		5,513,381		5,131,512
Acquisitions		757,709		892,693
Customers contributions		(125,934)		(122,809)
Provision for claims added to the cost of the works		(1,587)		3,430
Transfers from / for accounts receivable related to concession		(56,853)		(58,970)
Capitalizations for intangible in service		0		0
Amortization of quotas - concession and authorization	[1]	(285,835)		(274,180)
Amortization of quotas - PIS/Pasep and Cofins credits		(11,014)		(11,270)
Amortization of quotas appropriated in the cost of the work				0
Disposal		38,994		47,025
Intangible assets, beginning		5,750,873		5,513,381		5,131,512
Generation concession agreement in service
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		254,280		242,298
ANEEL grant - use of public property		0		0
Renegotiation of hydrological risk - GSF				26,872
Amortization of quotas - concession and authorization		(17,837)	[2]	(14,890)	[3]
Transfers to/from property, plant and equipment		0
Intangible assets, beginning		236,443		254,280		242,298
Generation concession agreement in progress
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		6,299		5,557
ANEEL grant - use of public property		678		742
Renegotiation of hydrological risk - GSF				0
Amortization of quotas - concession and authorization		0	[2]	0	[3]
Transfers to/from property, plant and equipment		0
Intangible assets, beginning		6,977		6,299		5,557
Generation concession agreement concession authorization rights
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		403,133		416,272
ANEEL grant - use of public property		0		0
Renegotiation of hydrological risk - GSF				0
Amortization of quotas - concession and authorization		(13,139)	[2]	(13,139)	[3]
Transfers to/from property, plant and equipment		(14,193)
Intangible assets, beginning		375,801		403,133		416,272
Generation concession agreement
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		663,712		664,127
ANEEL grant - use of public property		678		742
Renegotiation of hydrological risk - GSF				26,872
Amortization of quotas - concession and authorization		(30,976)	[2]	(28,029)	[3]
Transfers to/from property, plant and equipment		(14,193)
Intangible assets, beginning		619,221		663,712		664,127
Gas distribution in service
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		198,271		187,608
Acquisitions		0		0
Transfers from / for accounts receivable related to concession		(154,908)		0
Capitalizations for intangible in service		10,011		35,934
Amortization of quotas - concession and authorization	[4]	(28,753)		(25,251)
Disposal		204		20
Intangible assets, beginning		24,417		198,271		187,608
Gas distribution
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		238,509		306,708
Acquisitions		13,745		25,847
Transfers from / for accounts receivable related to concession		(24,501)		(68,737)
Capitalizations for intangible in service		(10,011)		0
Amortization of quotas - concession and authorization	[4]	0		(25,251)
Disposal		0		58
Intangible assets, beginning		19,471		238,509		306,708
Gas distribution in progress
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		40,238		119,100
Acquisitions		13,745		25,847
Transfers from / for accounts receivable related to concession		(179,409)		(68,737)
Capitalizations for intangible in service		0		(35,934)
Amortization of quotas - concession and authorization	[4]	(28,753)		0
Disposal		204		38
Intangible assets, beginning		43,888		40,238		119,100
Other in service
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		25,725		22,853
Acquisitions		0		0
Transfers from investments				0
Transfers from / for accounts receivable related to concession				150
Capitalizations for intangible in service		5,744		11,690
Amortization of quotas - concession and authorization	[4]	(8,809)		(8,936)
Amortization of quotas - PIS/Pasep and Cofins credits		(54)		(57)
Transfers to/from property, plant and equipment		105		25
Disposal		18		0
Intangible assets, beginning		22,693		25,725		22,853
Other in progress
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		18,485		19,876
Acquisitions		6,932		10,187
Transfers from investments				122
Transfers from / for accounts receivable related to concession				0
Capitalizations for intangible in service		(5,744)		(11,690)
Amortization of quotas - concession and authorization	[4]	0		0
Amortization of quotas - PIS/Pasep and Cofins credits		0		0
Transfers to/from property, plant and equipment		0		341
Disposal		3,524		351
Intangible assets, beginning		16,149		18,485		19,876
Other
Disclosure of detailed information about intangible assets [line items]
Intangible assets, beginning		44,210		42,729
Acquisitions		6,932		10,187
Transfers from investments				122
Transfers from / for accounts receivable related to concession				150
Capitalizations for intangible in service		0		0
Amortization of quotas - concession and authorization	[4]	(8,809)		(8,936)
Amortization of quotas - PIS/Pasep and Cofins credits		(54)		(57)
Transfers to/from property, plant and equipment		105		366
Disposal		3,542		351
Intangible assets, beginning		R$ 38,842		R$ 44,210		R$ 42,729

[1] Amortization during the concession as of the start of commercial operations of the enterprises or based on the useful life of the assets, of the two the shortest.

[2] Amortization during the concession/authorization as of the start of commercial operations of the enterprises.

[3] Includes the balances of use of public asset and hydrological risk renegotiation.

[4] Annual amortization rate: 20%.

XML

21. Payroll, Social Charges and Accruals (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfPayrollSocialChargesAndAccrualsLineItems [Line Items]
Payroll, social charges and accruals	R$ 313,967	R$ 287,797	R$ 258,401
Social security liabilities
DisclosureOfPayrollSocialChargesAndAccrualsLineItems [Line Items]
Payroll, social charges and accruals	82,434	85,586
Social security liabilities | Taxes and social contribution
DisclosureOfPayrollSocialChargesAndAccrualsLineItems [Line Items]
Payroll, social charges and accruals	49,748	50,016
Social security liabilities | Social security charges on paid vacation and 13th salary
DisclosureOfPayrollSocialChargesAndAccrualsLineItems [Line Items]
Payroll, social charges and accruals	32,686	35,570
Labor liabilities
DisclosureOfPayrollSocialChargesAndAccrualsLineItems [Line Items]
Payroll, social charges and accruals	231,533	202,211
Labor liabilities | Payroll, net
DisclosureOfPayrollSocialChargesAndAccrualsLineItems [Line Items]
Payroll, social charges and accruals	1,796	835
Labor liabilities | Vacation
DisclosureOfPayrollSocialChargesAndAccrualsLineItems [Line Items]
Payroll, social charges and accruals	106,450	111,021
Labor liabilities | Profit sharing
DisclosureOfPayrollSocialChargesAndAccrualsLineItems [Line Items]
Payroll, social charges and accruals	68,817	64,814
Labor liabilities | Voluntary termination
DisclosureOfPayrollSocialChargesAndAccrualsLineItems [Line Items]
Payroll, social charges and accruals	38,642	25,532
Labor liabilities | Profit sharing
DisclosureOfPayrollSocialChargesAndAccrualsLineItems [Line Items]
Payroll, social charges and accruals	R$ 15,828	R$ 9

XML

22. Suppliers (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfSuppliersLineItems [Line Items]
Suppliers	R$ 1,727,046	R$ 1,292,350
Suppliers, current	1,683,577	1,255,639	R$ 1,613,126
Suppliers, noncurrent	43,469	36,711	R$ 5,923
Energy supplies
DisclosureOfSuppliersLineItems [Line Items]
Suppliers	986,689	673,442
Materials and supplies
DisclosureOfSuppliersLineItems [Line Items]
Suppliers	521,969	399,576
Natural gas for resale
DisclosureOfSuppliersLineItems [Line Items]
Suppliers	101,026	132,985
Charges for use of grid system
DisclosureOfSuppliersLineItems [Line Items]
Suppliers	R$ 117,362	R$ 86,347

XML

23. Loans and Financing (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfLoansAndFinancingLineItems [Line Items]
Loans and financing	R$ 3,759,505	R$ 4,046,293	R$ 4,077,060
Loans and financing, current	784,666	1,470,742	308,558
Loans and financing, noncurrent	2,974,839	2,575,551	3,768,502
Foreign currency
DisclosureOfLoansAndFinancingLineItems [Line Items]
Loans and financing	89,270	90,505	104,434
Loans and financing, noncurrent	R$ 88,485
Foreign currency | National Treasury Department | Par Bond
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	Par Bond
Company	Copel
Issue date	May 20, 1998
Number of installments	1
Final maturity	Apr. 11, 2024
Annual rate p.y. (interest + commission)	6.0% + 0.20%
Finance charges	Half-yearly
Principal	R$ 17,315
Loans and financing	R$ 52,768	53,498
Foreign currency | National Treasury Department | Discount Bond
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	Discount Bond
Company	Copel
Issue date	May 20, 1998
Number of installments	1
Final maturity	Apr. 11, 2024
Annual rate p.y. (interest + commission)	1.1875%+0.20%
Finance charges	Half-yearly
Principal	R$ 12,082
Loans and financing	36,502	37,007
Local currency
DisclosureOfLoansAndFinancingLineItems [Line Items]
Loans and financing	3,670,235	3,955,788	R$ 3,972,626
Loans and financing, noncurrent	2,886,354
Local currency | Banco do Brasil
DisclosureOfLoansAndFinancingLineItems [Line Items]
Loans and financing	R$ 1,388,364	1,475,411
Local currency | Banco do Brasil | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	21/02155-4
Company	Copel DIS
Issue date	Sep. 10, 2010
Number of installments	2
Final maturity	Aug. 15, 2018
Annual rate p.y. (interest + commission)	109.0% of DI
Finance charges	Half-yearly
Principal	R$ 116,667
Loans and financing	R$ 60,049	122,713
Local currency | Banco do Brasil | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	21/02248-8
Company	Copel DIS
Issue date	Jun. 22, 2011
Number of installments	2
Final maturity	May 16, 2018
Annual rate p.y. (interest + commission)	109.0% of DI
Finance charges	Half-yearly
Principal	R$ 150,000
Loans and financing	R$ 75,601	152,314
Local currency | Banco do Brasil | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	CCB 21/11062X
Company	Copel DIS
Issue date	Aug. 26, 2013
Number of installments	3
Final maturity	Jul. 27, 2018
Annual rate p.y. (interest + commission)	106.0% of DI
Finance charges	Half-yearly
Principal	R$ 151,000
Loans and financing	R$ 51,932	151,359
Local currency | Banco do Brasil | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	CCB 330.600.773
Company	Copel DIS
Issue date	Jul. 11, 2014
Number of installments	3
Final maturity	Jul. 11, 2019
Annual rate p.y. (interest + commission)	111.8% of DI
Finance charges	Half-yearly
Principal	R$ 116,667
Loans and financing	R$ 80,699	124,170
Local currency | Banco do Brasil | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	CFX 17/35959-7
Company	Copel DIS
Issue date	May 16, 2017
Number of installments	2
Final maturity	May 06, 2019
Annual rate p.y. (interest + commission)	12.00%
Finance charges	Quarterly
Principal	R$ 75,000
Loans and financing	R$ 75,291	0
Local currency | Banco do Brasil | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	CCB 21/00851-5
Company	Copel DIS
Issue date	Jun. 30, 2017
Number of installments	2
Final maturity	Jun. 13, 2019
Annual rate p.y. (interest + commission)	11.00%
Finance charges	Quarterly
Principal	R$ 38,889
Loans and financing	R$ 38,241	0
Local currency | Banco do Brasil | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	CCB 17/35960-0
Company	Copel DIS
Issue date	Jul. 27, 2017
Number of installments	2
Final maturity	Jul. 17, 2019
Annual rate p.y. (interest + commission)	11.00%
Finance charges	Quarterly
Principal	R$ 50,333
Loans and financing	R$ 51,073	0
Local currency | Banco do Brasil | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	CFX 17/35958-9
Company	Copel DIS
Issue date	Aug. 15, 2017
Number of installments	2
Final maturity	Aug. 05, 2019
Annual rate p.y. (interest + commission)	11.00%
Finance charges	Quarterly
Principal	R$ 58,333
Loans and financing	R$ 58,636	0
Local currency | Banco do Brasil | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	NCI 330.600.132
Company	Copel
Issue date	Feb. 28, 2007
Number of installments	3
Final maturity	Feb. 28, 2019
Annual rate p.y. (interest + commission)	107.8% of DI
Finance charges	Half-yearly
Principal	R$ 231,000
Loans and financing	R$ 157,707	241,312
Local currency | Banco do Brasil | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	NCI 330.600.151
Company	Copel
Issue date	Jul. 31, 2007
Number of installments	3
Final maturity	Jul. 31, 2017
Annual rate p.y. (interest + commission)	111.0% of DI
Finance charges	Half-yearly
Principal	R$ 18,000
Loans and financing	R$ 0	6,366
Local currency | Banco do Brasil | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	CCB 306.401.381
Company	Copel
Issue date	Jul. 21, 2017
Number of installments	3
Final maturity	Jul. 21, 2020
Annual rate p.y. (interest + commission)	120.0% of DI
Finance charges	Half-yearly
Principal	R$ 640,005
Loans and financing	R$ 660,949	677,177
Local currency | Banco do Brasil | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	NCI 306.401.445
Company	Copel
Issue date	Feb. 24, 2017
Number of installments	2
Final maturity	Feb. 15, 2020
Annual rate p.y. (interest + commission)	124.5% of DI
Finance charges	Half-yearly
Principal	R$ 77,000
Loans and financing	78,186	0
Local currency | Eletrobras
DisclosureOfLoansAndFinancingLineItems [Line Items]
Loans and financing	R$ 34,997	49,315
Local currency | Eletrobras | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	980/95
Company	Copel DIS
Issue date	Dec. 22, 1994
Number of installments	80
Final maturity	Nov. 15, 2018
Annual rate p.y. (interest + commission)	8.00%
Finance charges	Quarterly
Principal	R$ 11
Loans and financing	R$ 3	5
Local currency | Eletrobras | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	981/95
Company	Copel DIS
Issue date	Dec. 22, 1994
Number of installments	80
Final maturity	Aug. 15, 2019
Annual rate p.y. (interest + commission)	8.00%
Finance charges	Quarterly
Principal	R$ 1,169
Loans and financing	R$ 115	180
Local currency | Eletrobras | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	982/95
Company	Copel DIS
Issue date	Dec. 22, 1994
Number of installments	80
Final maturity	Feb. 15, 2020
Annual rate p.y. (interest + commission)	8.00%
Finance charges	Quarterly
Principal	R$ 1,283
Loans and financing	R$ 48	71
Local currency | Eletrobras | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	983/95
Company	Copel DIS
Issue date	Dec. 22, 1994
Number of installments	80
Final maturity	Nov. 15, 2020
Annual rate p.y. (interest + commission)	8.00%
Finance charges	Quarterly
Principal	R$ 11
Loans and financing	R$ 77	103
Local currency | Eletrobras | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	984/95
Company	Copel DIS
Issue date	Dec. 22, 1994
Number of installments	80
Final maturity	Nov. 15, 2020
Annual rate p.y. (interest + commission)	8.00%
Finance charges	Quarterly
Principal	R$ 14
Loans and financing	R$ 33	44
Local currency | Eletrobras | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	985/95
Company	Copel DIS
Issue date	Dec. 22, 1994
Number of installments	80
Final maturity	Aug. 15, 2021
Annual rate p.y. (interest + commission)	8.00%
Finance charges	Quarterly
Principal	R$ 61
Loans and financing	R$ 23	29
Local currency | Eletrobras | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	142/06
Company	Copel DIS
Issue date	May 11, 2006
Number of installments	120
Final maturity	Sep. 30, 2018
Annual rate p.y. (interest + commission)	5.0% + 1.0%
Finance charges	Monthly
Principal	R$ 74,340
Loans and financing	R$ 2,730	6,369
Local currency | Eletrobras | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	206/07
Company	Copel DIS
Issue date	Mar. 03, 2008
Number of installments	120
Final maturity	Aug. 30, 2020
Annual rate p.y. (interest + commission)	5.0% + 1.0%
Finance charges	Monthly
Principal	R$ 109,642
Loans and financing	R$ 23,746	32,648
Local currency | Eletrobras | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	273/09
Company	Copel DIS
Issue date	Feb. 18, 2010
Number of installments	120
Final maturity	Dec. 30, 2022
Annual rate p.y. (interest + commission)	5.0% + 1.5%
Finance charges	Monthly
Principal	R$ 63,944
Loans and financing	8,222	9,866
Local currency | Caixa Econônica Federal
DisclosureOfLoansAndFinancingLineItems [Line Items]
Loans and financing	R$ 5,585	5,631
Local currency | Caixa Econônica Federal | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	415.855-22/14
Company	Copel DIS
Issue date	Mar. 31, 2015
Number of installments	120
Final maturity	Dec. 08, 2026
Annual rate p.y. (interest + commission)	6.00%
Finance charges	Monthly
Principal	R$ 2,844
Loans and financing	R$ 5,087	5,631
Local currency | Caixa Econônica Federal | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	3153-352
Company	Copel DIS
Issue date	Nov. 01, 2016
Number of installments	36
Final maturity	Jan. 15, 2022
Annual rate p.y. (interest + commission)	5.5 % above TJLP
Finance charges	Quarterly
Principal	R$ 489
Loans and financing	498	0
Local currency | Finep
DisclosureOfLoansAndFinancingLineItems [Line Items]
Loans and financing	R$ 16,337	22,026
Local currency | Finep | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	21120105-00
Company	Copel TEL
Issue date	Jul. 17, 2012
Number of installments	81
Final maturity	Oct. 15, 2020
Annual rate p.y. (interest + commission)	4%
Finance charges	Monthly
Principal	R$ 35,095
Loans and financing	R$ 8,855	11,983
Local currency | Finep | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	21120105-00
Company	Copel TEL
Issue date	Jul. 17, 2012
Number of installments	81
Final maturity	Oct. 15, 2020
Annual rate p.y. (interest + commission)	3.5% + TR
Finance charges	Monthly
Principal	R$ 17,103
Loans and financing	7,482	10,043
Local currency | BNDES
DisclosureOfLoansAndFinancingLineItems [Line Items]
Loans and financing	R$ 1,576,660	1,692,775
Local currency | BNDES | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	820989.1
Company	Copel GeT
Issue date	Mar. 17, 2009
Number of installments	179
Final maturity	Jan. 15, 2028
Annual rate p.y. (interest + commission)	1.63% above TJLP
Finance charges	Monthly
Principal	R$ 169,500
Loans and financing	R$ 118,370	128,722
Local currency | BNDES | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	1120952.1-A
Company	Copel GeT
Issue date	Dec. 16, 2011
Number of installments	168
Final maturity	Apr. 15, 2026
Annual rate p.y. (interest + commission)	1.82% above TJLP
Finance charges	Monthly
Principal	R$ 42,433
Loans and financing	R$ 26,078	28,895
Local currency | BNDES | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	1120952.1-B
Company	Copel GeT
Issue date	Dec. 16, 2011
Number of installments	168
Final maturity	Apr. 15, 2026
Annual rate p.y. (interest + commission)	1.42% above TJLP
Finance charges	Monthly
Principal	R$ 2,290
Loans and financing	R$ 1,407	1,559
Local currency | BNDES | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	1220768.1
Company	Copel GeT
Issue date	Sep. 28, 2012
Number of installments	192
Final maturity	Jul. 15, 2029
Annual rate p.y. (interest + commission)	1.36% above TJLP
Finance charges	Monthly
Principal	R$ 73,122
Loans and financing	R$ 55,357	59,493
Local currency | BNDES | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	13211061
Company	Copel GeT
Issue date	Dec. 04, 2013
Number of installments	192
Final maturity	Oct. 15, 2031
Annual rate p.y. (interest + commission)	1.49% above TJLP
Finance charges	Monthly
Principal	R$ 1,041,155
Loans and financing	R$ 871,022	923,982
Local currency | BNDES | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	13210331
Company	Copel GeT
Issue date	Dec. 03, 2013
Number of installments	168
Final maturity	Aug. 15, 2028
Annual rate p.y. (interest + commission)	1.49% and 1.89%  above TJLP
Finance charges	Monthly
Principal	R$ 17,644
Loans and financing	R$ 13,878	15,017
Local currency | BNDES | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	15206041
Company	Copel GeT
Issue date	Dec. 28, 2015
Number of installments	168
Final maturity	Jun. 15, 2030
Annual rate p.y. (interest + commission)	2.42% above TJLP
Finance charges	Monthly
Principal	R$ 34,265
Loans and financing	R$ 25,899	27,666
Local currency | BNDES | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	15205921
Company	Copel GeT
Issue date	Dec. 28, 2015
Number of installments	168
Final maturity	Dec. 15, 2029
Annual rate p.y. (interest + commission)	2.32% above TJLP
Finance charges	Monthly
Principal	R$ 21,584
Loans and financing	R$ 15,734	16,860
Local currency | BNDES | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	14205611-A
Company	Copel DIS
Issue date	Dec. 15, 2014
Number of installments	72
Final maturity	Jan. 15, 2021
Annual rate p.y. (interest + commission)	2.09% p.y. above TJLP
Finance charges	Monthly
Principal	R$ 41,583
Loans and financing	R$ 21,266	27,893
Local currency | BNDES | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	14205611-B
Company	Copel DIS
Issue date	Dec. 15, 2014
Number of installments	6
Final maturity	Feb. 15, 2021
Annual rate p.y. (interest + commission)	2.09 p.y. above TR BNDES
Finance charges	Annual
Principal	R$ 17,821
Loans and financing	R$ 15,384	18,735
Local currency | BNDES | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	14205611-C
Company	Copel DIS
Issue date	Dec. 15, 2014
Number of installments	113
Final maturity	Jun. 15, 2024
Annual rate p.y. (interest + commission)	6% p.y.
Finance charges	Monthly
Principal	R$ 78,921
Loans and financing	R$ 50,949	58,787
Local currency | BNDES | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	14205611-D
Company	Copel DIS
Issue date	Dec. 15, 2014
Number of installments	57
Final maturity	Feb. 15, 2021
Annual rate p.y. (interest + commission)	TJLP
Finance charges	Monthly
Principal	R$ 750
Loans and financing	R$ 29	38
Local currency | BNDES | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	14212711
Company	Santa Maria
Issue date	Jun. 01, 2015
Number of installments	192
Final maturity	Aug. 15, 2031
Annual rate p.y. (interest + commission)	1.66% p.y. above TJLP
Finance charges	Monthly
Principal	R$ 59,462
Loans and financing	R$ 51,578	54,734
Local currency | BNDES | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	14212721
Company	Santa Helena
Issue date	Jun. 01, 2015
Number of installments	192
Final maturity	Aug. 15, 2031
Annual rate p.y. (interest + commission)	1.66% p.y. above TJLP
Finance charges	Monthly
Principal	R$ 64,520
Loans and financing	R$ 55,932	59,355
Local currency | BNDES | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	11211521
Company	GE Farol
Issue date	Mar. 19, 2012
Number of installments	192
Final maturity	Jun. 15, 2030
Annual rate p.y. (interest + commission)	2.34% p.y. above TJLP
Finance charges	Monthly
Principal	R$ 54,100
Loans and financing	R$ 48,742	52,053
Local currency | BNDES | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	11211531
Company	GE Boa Vista
Issue date	Mar. 19, 2012
Number of installments	192
Final maturity	Jun. 15, 2030
Annual rate p.y. (interest + commission)	2.34% p.y. above TJLP
Finance charges	Monthly
Principal	R$ 40,050
Loans and financing	R$ 36,034	38,482
Local currency | BNDES | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	11211541
Company	GE S.B. do Norte
Issue date	Mar. 19, 2012
Number of installments	192
Final maturity	Jun. 15, 2030
Annual rate p.y. (interest + commission)	2.34% p.y. above TJLP
Finance charges	Monthly
Principal	R$ 90,900
Loans and financing	R$ 81,723	87,275
Local currency | BNDES | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	11211551
Company	GE Olho D'Água
Issue date	Mar. 19, 2012
Number of installments	192
Final maturity	Jun. 15, 2030
Annual rate p.y. (interest + commission)	2.34% p.y. above TJLP
Finance charges	Monthly
Principal	R$ 97,000
Loans and financing	R$ 87,278	93,229
Local currency | BNDES | Promissory notes
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	Promissory notes
Company	Copel GeT
Issue date	Dec. 29, 2015
Number of installments	1
Final maturity	Dec. 18, 2017
Annual rate p.y. (interest + commission)	117% of DI
Finance charges	Single installment
Principal	R$ 500,000
Loans and financing	R$ 0	581,909
Local currency | BNDES | Promissory notes
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	Promissory notes
Company	Copel GeT
Issue date	May 12, 2017
Number of installments	1
Final maturity	May 12, 2019
Annual rate p.y. (interest + commission)	117% of DI
Finance charges	Single installment
Principal	R$ 500,000
Loans and financing	529,919	0
Local currency | BNDES
DisclosureOfLoansAndFinancingLineItems [Line Items]
Loans and financing	529,919	581,909
Local currency | Banco do Brasil BNDES Transfer
DisclosureOfLoansAndFinancingLineItems [Line Items]
Loans and financing	R$ 118,373	128,721
Local currency | Banco do Brasil BNDES Transfer | Contract
DisclosureOfLoansAndFinancingLineItems [Line Items]
Contract	21/02000-0
Company	Copel GeT
Issue date	Apr. 16, 2009
Number of installments	179
Final maturity	Jan. 15, 2028
Annual rate p.y. (interest + commission)	2.13% above TJLP
Finance charges	Monthly
Principal	R$ 169,500
Loans and financing	R$ 118,373	R$ 128,721

XML

23. Loans and Financing (Details 1) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfLoansAndFinancingByCurrencyAndIndexLineItems [Line Items]
Loans and financing	R$ 3,759,505	R$ 4,046,293	R$ 4,077,060
Loans and financing, percent	100.00%	100.00%
Foreign currency
DisclosureOfLoansAndFinancingByCurrencyAndIndexLineItems [Line Items]
Loans and financing	R$ 89,270	R$ 90,505
Loans and financing, percent	2.37%	2.24%
Foreign currency | U.S. Dollar
DisclosureOfLoansAndFinancingByCurrencyAndIndexLineItems [Line Items]
Loans and financing	R$ 89,270	R$ 90,505
Loans and financing, percent	2.37%	2.24%
Local currency
DisclosureOfLoansAndFinancingByCurrencyAndIndexLineItems [Line Items]
Loans and financing	R$ 3,670,235	R$ 3,955,788
Loans and financing, percent	97.63%	97.76%
Local currency | CDI
DisclosureOfLoansAndFinancingByCurrencyAndIndexLineItems [Line Items]
Loans and financing	R$ 1,695,042	R$ 2,057,320
Loans and financing, percent	45.09%	50.84%
Local currency | TJLP
DisclosureOfLoansAndFinancingByCurrencyAndIndexLineItems [Line Items]
Loans and financing	R$ 1,629,198	R$ 1,743,974
Loans and financing, percent	43.34%	43.10%
Local currency | TR
DisclosureOfLoansAndFinancingByCurrencyAndIndexLineItems [Line Items]
Loans and financing	R$ 22,866	R$ 28,778
Loans and financing, percent	0.61%	0.71%
Local currency | Without indexer
DisclosureOfLoansAndFinancingByCurrencyAndIndexLineItems [Line Items]
Loans and financing	R$ 323,129	R$ 125,716
Loans and financing, percent	8.59%	3.11%

XML

23. Loans and Financing (Details 2) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Loans and financing, noncurrent	R$ 2,974,839	R$ 2,575,551	R$ 3,768,502
2019
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Loans and financing, noncurrent	1,219,313
2020
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Loans and financing, noncurrent	407,504
2021
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Loans and financing, noncurrent	141,144
2022
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Loans and financing, noncurrent	136,801
2023
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Loans and financing, noncurrent	135,156
After 2023
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Loans and financing, noncurrent	934,921
Foreign currency
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Loans and financing, noncurrent	88,485
Foreign currency | 2019
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Loans and financing, noncurrent	0
Foreign currency | 2020
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Loans and financing, noncurrent	0
Foreign currency | 2021
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Loans and financing, noncurrent	0
Foreign currency | 2022
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Loans and financing, noncurrent	0
Foreign currency | 2023
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Loans and financing, noncurrent	0
Foreign currency | After 2023
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Loans and financing, noncurrent	88,485
Local currency
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Loans and financing, noncurrent	2,886,354
Local currency | 2019
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Loans and financing, noncurrent	1,219,313
Local currency | 2020
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Loans and financing, noncurrent	407,504
Local currency | 2021
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Loans and financing, noncurrent	141,144
Local currency | 2022
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Loans and financing, noncurrent	136,801
Local currency | 2023
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Loans and financing, noncurrent	135,156
Local currency | After 2023
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Loans and financing, noncurrent	R$ 846,436

XML

23. Loans and Financing (Details 3) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
DisclosureOfChangesInLoansAndFinancingLineItems [Line Items]
Loans and financing, beginning	R$ 4,046,293	R$ 4,077,060
Funding	800,044	93,806
Charges	398,949	452,070
Monetary and exchange variations	17,439	12,458
Amortization - principal	(971,187)	(226,973)
Payment - charges	(532,033)	(362,128)
Loans and financing, ending	3,759,505	4,046,293
Foreign currency
DisclosureOfChangesInLoansAndFinancingLineItems [Line Items]
Loans and financing, beginning	90,505	104,434
Funding	0	0
Charges	3,868	3,909
Monetary and exchange variations	(1,184)	(13,878)
Amortization - principal	0	0
Payment - charges	(3,919)	(3,960)
Loans and financing, ending	89,270	90,505
Local currency
DisclosureOfChangesInLoansAndFinancingLineItems [Line Items]
Loans and financing, beginning	3,955,788	3,972,626
Funding	800,044	93,806
Charges	395,081	448,161
Monetary and exchange variations	18,623	26,336
Amortization - principal	(971,187)	(226,973)
Payment - charges	(528,114)	(358,168)
Loans and financing, ending	R$ 3,670,235	R$ 3,955,788

XML

23. Loans and Financing (Details 4) - Covenant	12 Months Ended
	Dec. 31, 2017
DisclosureOfFinancialCovenantsLineItems [Line Items]
Company name	Copel GeT
Contract	BNDES Finem No. 820989.1 - Mauá
Financial index	EBITDA /  Net financial results
Limit	greater than or equal to 1.3
Company name	Copel GeT
Contract	Banco do Brasil No. 21/02000-0 - Mauá
Financial index	EBITDA /  Net financial results
Limit	greater than or equal to 1.3
Company name	Copel GeT
Contract	3rd issue of Promissory Notes
Financial index	Consolidated net debt / Consolidated EBITDA
Limit	less than or equal to 3.5
Company name	Copel GeT
Contract	3rd issue of Promissory Notes
Financial index	Debt service coverage ratio
Limit	greater than or equal to 1.5
Company name	Copel DIS
Contract	BNDES Finem No. 14205611
Financial index	Financial indebtedness / adjusted EBITIDA
Limit	less than or equal to 5.0
Company name	Santa Maria
Contract	BNDES Finem No. 14212711
Financial index	Debt service coverage ratio
Limit	greater than or equal to 1.3
Company name	Santa Helena
Contract	BNDES Finem No. 14212721
Financial index	Debt service coverage ratio
Limit	greater than or equal to 1.3
Company name	São Bento Energia, Investimento e Participações
Contract	BNDES Assignment Agreement
Financial index	Debt service coverage ratio
Limit	greater than or equal to 1.3
Company name	GE Boa Vista S.A.
Contract	BNDES Finem No. 11211531
Financial index	Debt service coverage ratio
Limit	greater than or equal to 1.3
Company name	GE Farol S.A.
Contract	BNDES Finem No. 11211521
Financial index	Debt service coverage ratio
Limit	greater than or equal to 1.3
Company name	GE Olho D´Água S.A.
Contract	BNDES Finem No. 11211551
Financial index	Debt service coverage ratio
Limit	greater than or equal to 1.3
Company name	GE São Bento do Norte S.A.
Contract	BNDES Finem No. 11211541
Financial index	Debt service coverage ratio
Limit	greater than or equal to 1.3

XML

24. Debentures (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfDebenturesLineItems [Line Items]
Debentures	R$ 6,070,978	R$ 4,790,809	R$ 3,683,928
Debentures, current	1,632,062	1,131,198	924,005
Debentures, noncurent	R$ 4,438,916	3,659,611	R$ 2,759,923
Debenture
DisclosureOfDebenturesLineItems [Line Items]
Issue	5th
Company	Copel
Issue date	May 13, 2014
Number of installments	3
Initial maturity	May 13, 2017
Final maturity	May 13, 2019
Annual rate p.y. (interest + commission)	111.5% of DI
Principal	R$ 1,000,000
Debentures	R$ 672,537	1,017,099
Debenture
DisclosureOfDebenturesLineItems [Line Items]
Issue	6th
Company	Copel
Issue date	Jun. 29, 2017
Number of installments	1
Final maturity	Jun. 28, 2019
Annual rate p.y. (interest + commission)	117.0% of DI
Principal	R$ 520,000
Debentures	R$ 542,944	0
Debenture
DisclosureOfDebenturesLineItems [Line Items]
Issue	1st
Company	Copel GeT
Issue date	May 15, 2015
Number of installments	3
Initial maturity	May 15, 2018
Final maturity	May 15, 2020
Annual rate p.y. (interest + commission)	113.0% of DI
Principal	R$ 1,000,000
Debentures	R$ 1,059,822	1,094,731
Debenture
DisclosureOfDebenturesLineItems [Line Items]
Issue	2nd
Company	Copel GeT
Issue date	Jul. 13, 2016
Number of installments	2
Initial maturity	Jul. 13, 2018
Final maturity	Jul. 13, 2019
Annual rate p.y. (interest + commission)	121.0% of DI
Principal	R$ 1,000,000
Debentures	R$ 1,037,570	1,060,613
Debenture
DisclosureOfDebenturesLineItems [Line Items]
Issue	3rd
Company	Copel GeT
Issue date	Oct. 20, 2017
Number of installments	3
Initial maturity	Oct. 20, 2020
Final maturity	Oct. 20, 2022
Annual rate p.y. (interest + commission)	126.0% of  DI
Principal	R$ 1,000,000
Debentures	R$ 999,442	0
Debenture
DisclosureOfDebenturesLineItems [Line Items]
Issue	1st
Company	Copel DIS
Issue date	Oct. 30, 2012
Number of installments	2
Initial maturity	Oct. 30, 2016
Final maturity	Oct. 30, 2017
Annual rate p.y. (interest + commission)	DI + Spread 0.99% p.y.
Principal	R$ 1,000,000
Debentures	R$ 0	511,525
Debenture
DisclosureOfDebenturesLineItems [Line Items]
Issue	2nd
Company	Copel DIS
Issue date	Oct. 27, 2016
Number of installments	2
Initial maturity	Oct. 27, 2018
Final maturity	Oct. 27, 2019
Annual rate p.y. (interest + commission)	124.0% of DI
Principal	R$ 500,000
Debentures	R$ 502,179	504,699
Debenture
DisclosureOfDebenturesLineItems [Line Items]
Issue	3rd
Company	Copel DIS
Issue date	Oct. 20, 2017
Number of installments	2
Initial maturity	Oct. 20, 2021
Final maturity	Oct. 20, 2022
Annual rate p.y. (interest + commission)	126.0% of  DI
Principal	R$ 500,000
Debentures	R$ 501,810	0
Debenture
DisclosureOfDebenturesLineItems [Line Items]
Issue	1st
Company	Copel TEL
Issue date	Oct. 15, 2015
Number of installments	5
Initial maturity	Oct. 15, 2020
Final maturity	Oct. 15, 2024
Annual rate p.y. (interest + commission)	IPCA + 7.9633% p.y.
Principal	R$ 160,000
Debentures	R$ 184,506	174,184
Debenture
DisclosureOfDebenturesLineItems [Line Items]
Issue	2nd
Company	Copel TEL
Issue date	Jul. 15, 2017
Number of installments	1
Final maturity	Jul. 15, 2022
Annual rate p.y. (interest + commission)	IPCA + 5.4329
Principal	R$ 220,000
Debentures	R$ 215,675	0
Debenture
DisclosureOfDebenturesLineItems [Line Items]
Issue	2nd
Company	Nova Asa Branca I, Nova Asa Branca II, Nova Asa Branca III, Nova Eurus IV e Ventos de Santo Uriel.
Issue date	Mar. 24, 2016
Number of installments	192
Initial maturity	Aug. 15, 2016
Final maturity	Jul. 15, 2032
Annual rate p.y. (interest + commission)	TJLP + 2.02% p.y.
Principal	R$ 147,575
Debentures	R$ 135,662	143,407
Debenture
DisclosureOfDebenturesLineItems [Line Items]
Issue	2nd
Company	Nova Asa Branca I, Nova Asa Branca II, Nova Asa Branca III, Nova Eurus IV e Ventos de Santo Uriel.
Issue date	Mar. 24, 2016
Number of installments	192
Initial maturity	Aug. 15, 2016
Final maturity	Jul. 15, 2032
Annual rate p.y. (interest + commission)	IPCA + 9.87% p.y.
Principal	R$ 153,258
Debentures	R$ 145,786	151,781
Debenture
DisclosureOfDebenturesLineItems [Line Items]
Issue	2nd
Company	Elejor
Issue date	Sep. 26, 2013
Number of installments	60
Initial maturity	Oct. 26, 2013
Final maturity	Sep. 26, 2018
Annual rate p.y. (interest + commission)	DI + Spread 1.00% p.y.
Principal	R$ 203,000
Debentures	R$ 30,370	70,984
Debenture
DisclosureOfDebenturesLineItems [Line Items]
Issue	1st
Company	Compagás
Issue date	Jun. 15, 2013
Number of installments	40
Initial maturity	Sep. 15, 2015
Final maturity	Dec. 15, 2018
Annual rate p.y. (interest + commission)	TJLP+1.7% p.y.+1.0% p.y.
Principal	R$ 62,626
Debentures	R$ 19,214	38,018
Debenture
DisclosureOfDebenturesLineItems [Line Items]
Issue	2nd
Company	Compagás
Issue date	Apr. 15, 2016
Number of installments	57
Initial maturity	Jul. 15, 2017
Final maturity	Dec. 15, 2021
Annual rate p.y. (interest + commission)	TJLP/Selic + 2.17% p.y.
Principal	R$ 33,620
Debentures	R$ 23,461	R$ 23,768

XML

24. Debentures (Details 1) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Debentures, noncurent	R$ 4,438,916	R$ 3,659,611	R$ 2,759,923
2019
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Debentures, noncurent	1,973,438
2020
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Debentures, noncurent	695,598
2021
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Debentures, noncurent	618,483
2022
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Debentures, noncurent	867,060
2023
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Debentures, noncurent	69,247
After 2023
DisclosureOfMaturityOfNoncurrentInstallmentsLineItems [Line Items]
Debentures, noncurent	R$ 215,090

XML

24. Debentures (Details 2) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Debentures Details 2
Debentures, beginning	R$ 4,790,809	R$ 3,683,928
Funding	2,242,521	1,822,965
Charges and monetary variations	575,468	617,126
Amortization - principal	(915,005)	(785,239)
Payment - charges	(622,815)	(547,971)
Debentures, ending	R$ 6,070,978	R$ 4,790,809

XML

24. Debentures (Details 3) - Covenant	12 Months Ended
	Dec. 31, 2017
DisclosureOfFinancialCovenantsLineItems [Line Items]
Company name	Copel
Contract	5th issue of Debentures
Financial index	Consolidated net debt / Consolidated EBITDA, Debt service coverage ratio
Limit	less than or equal to 3.5, grater than or equal to 1.5
Company name	Copel
Contract	6th issue of Debentures
Financial index	Consolidated net debt / Consolidated EBITDA, Debt service coverage ratio
Limit	less than or equal to 3.5, grater than or equal to 1.5
Company name	Copel GeT
Contract	1st issue of Debentures
Financial index	Consolidated net debt / Consolidated EBITDA, Debt service coverage ratio
Limit	less than or equal to 3.5, grater than or equal to 1.5
Company name	Copel GeT
Contract	2nd issue of Debentures
Financial index	Consolidated net debt / Consolidated EBITDA, Debt service coverage ratio
Limit	less than or equal to 3.5, grater than or equal to 1.5
Company name	Copel GeT
Contract	3rd issue of Debentures
Financial index	Consolidated net debt / Consolidated EBITDA, Debt service coverage ratio
Limit	less than or equal to 3.5, grater than or equal to 1.5
Company name	Copel DIS
Contract	2nd issue of Debentures
Financial index	Consolidated net debt / Consolidated EBITDA, Debt service coverage ratio
Limit	less than or equal to 3.5, grater than or equal to 1.5
Company name	Copel DIS
Contract	3rd issue of Debentures
Financial index	Consolidated net debt / Consolidated EBITDA, Debt service coverage ratio
Limit	less than or equal to 3.5, grater than or equal to 1.5
Company name	Copel TEL
Contract	1st issue of Debentures
Financial index	Consolidated net debt / Consolidated EBITDA, Debt service coverage ratio
Limit	less than or equal to 3.5, grater than or equal to 1.5
Company name	Copel TEL
Contract	2nd issue of Debentures
Financial index	Consolidated net debt / Consolidated EBITDA, Debt service coverage ratio
Limit	less than or equal to 3.5, grater than or equal to 1.5
Company name	Elejor
Contract	2nd issue of Debentures
Financial index	Consolidated net debt / Consolidated EBITDA
Limit	less than or equal to  4.0
Company name	Elejor
Contract	2nd issue of Debentures
Financial index	Debt service coverage ratio
Limit	greater than or equal to 1.2
Company name	Compagás
Contract	1st issue of Debentures
Financial index	Consolidated net debt / Consolidated EBITDA
Limit	less than or equal to  3.5
Company name	Compagás
Contract	2nd issue of Debentures
Financial index	General Indebtedness
Limit	less than or equal to 0.7
Company name	Nova Asa Branca I
Contract	2nd issue of Debentures
Financial index	Debt service coverage ratio
Limit	greater than or equal to 1.3
Company name	Nova Asa Branca II
Contract	2nd issue of Debentures
Financial index	Debt service coverage ratio
Limit	greater than or equal to 1.3
Company name	Nova Asa Branca III
Contract	2nd issue of Debentures
Financial index	Debt service coverage ratio
Limit	greater than or equal to 1.3
Company name	Nova Eurus IV
Contract	2nd issue of Debentures
Financial index	Debt service coverage ratio
Limit	greater than or equal to 1.3
Company name	Ventos de Santo Uriel
Contract	2nd issue of Debentures
Financial index	Debt service coverage ratio
Limit	greater than or equal to 1.3

XML

25. Post-Employment Benefits (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of defined benefit plans [line items]
Post-employment benefits	R$ 866,103	R$ 769,865	R$ 594,660
Post-employment benefits, current	53,225	47,894	43,323
Post-employment benefits, noncurrent	812,878	721,971	R$ 551,337
Pension plans
Disclosure of defined benefit plans [line items]
Post-employment benefits	1,069	1,252
Healthcare plans
Disclosure of defined benefit plans [line items]
Post-employment benefits	R$ 865,034	R$ 768,613

XML

25. Post-Employment Benefits (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of defined benefit plans [line items]
Post-employment benefits	R$ 237,597	R$ 259,767	R$ 254,327
Employees
Disclosure of defined benefit plans [line items]
Post-employment benefits	235,907	258,364	251,947
Employees | Pension plans
Disclosure of defined benefit plans [line items]
Post-employment benefits	78,680	75,407	65,878
Employees | Healthcare plan - post employment
Disclosure of defined benefit plans [line items]
Post-employment benefits	97,511	129,647	143,236
Employees | Healthcare plan - active employees
Disclosure of defined benefit plans [line items]
Post-employment benefits	81,617	75,578	61,927
Employees | Transfers to construction in progress
Disclosure of defined benefit plans [line items]
Post-employment benefits	(21,901)	(22,268)	(19,094)
Management
Disclosure of defined benefit plans [line items]
Post-employment benefits	1,690	1,403	2,380
Management | Pension plans
Disclosure of defined benefit plans [line items]
Post-employment benefits	1,500	1,175	2,241
Management | Healthcare plan
Disclosure of defined benefit plans [line items]
Post-employment benefits	R$ 190	R$ 228	R$ 139

XML

25. Post-Employment Benefits (Details 2) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Post-employment Benefits Details 2
Post-employment benefits, beginning	R$ 769,865	R$ 594,660
Appropriation of actuarial calculation	97,511	130,707
Pension and healthcare contributions	153,069	142,735
Adjustment related to actuarial gains (loss)	46,506	88,906
Amortizations	(200,848)	(187,143)
Post-employment benefits, ending	R$ 866,103	R$ 769,865

XML

25. Post-Employment Benefits (Details 3)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Economic | Inflation p.y.
Disclosure of defined benefit plans [line items]
Real rate	0.00%	0.00%
Nominal rate	4.50%	5.15%
Expected rate of discount/return p.y. | Unified Plan
Disclosure of defined benefit plans [line items]
Real rate	5.11%	5.91%
Nominal rate	9.84%	11.37%
Expected rate of discount/return p.y. | Plan III
Disclosure of defined benefit plans [line items]
Real rate	5.24%	5.89%
Nominal rate	9.97%	11.34%
Expected rate of discount/return p.y. | Assistance Plan
Disclosure of defined benefit plans [line items]
Real rate	5.20%	5.89%
Nominal rate	9.94%	11.35%
Expected rate of discount/return p.y. | Salary growth Unified Plan p.y.
Disclosure of defined benefit plans [line items]
Real rate	2.00%	2.00%
Nominal rate	6.59%	7.25%
Expected rate of discount/return p.y. | Salary growth Plan III p.y.
Disclosure of defined benefit plans [line items]
Real rate	1.50%	2.00%
Nominal rate	6.07%	7.25%
Demographic | Mortality Table
Disclosure of defined benefit plans [line items]
Nominal assumption	AT - 2000	AT - 2000
Demographic | Mortality table of individuals with permanent disability
Disclosure of defined benefit plans [line items]
Nominal assumption	WINKLEVOSS	WINKLEVOSS
Demographic | Table of new disability benefit vested
Disclosure of defined benefit plans [line items]
Nominal assumption	TASA 1927	A. VINDAS

XML

25. Post-Employment Benefits (Details 4) - Participants	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Social Security Plan: Unified Plan
DisclosureOfParticipantsAndBeneficiariesLineItems [Line Items]
Number of active participants	37	39
Number of inactive participants	4,435	4,463
Number of dependent people	0	0
Total	4,472	4,502
Social Security Plan: Plan III
DisclosureOfParticipantsAndBeneficiariesLineItems [Line Items]
Number of active participants	8,540	8,663
Number of inactive participants	3,509	3,363
Number of dependent people	0	0
Total	12,049	12,026
Assistance Plan
DisclosureOfParticipantsAndBeneficiariesLineItems [Line Items]
Number of active participants	8,172	8,456
Number of inactive participants	7,703	7,546
Number of dependent people	23,081	23,745
Total	38,956	39,747

XML

25. Post-Employment Benefits (Details 5) - yr	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Unified Plan
DisclosureOfLifeExpectancyLineItems [Line Items]
Retired participants life expectancy	14.92	15.62
Pensioner participants life expectancy	16.37	16.59
Plan III
DisclosureOfLifeExpectancyLineItems [Line Items]
Retired participants life expectancy	23.01	23.75
Pensioner participants life expectancy	27.99	28.89

XML

25. Post-Employment Benefits (Details 6) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
DisclosureOfActuarialEvaluationLineItems [Line Items]
Total liabilities or partially covered	R$ 8,123,419	R$ 7,450,113
Fair value of the plan assets	(7,826,550)	(7,437,619)
Plan coverage status	296,869	12,494
Unrecognized asset	568,165	756,119
Total	865,034	768,613
Unified Plan
DisclosureOfActuarialEvaluationLineItems [Line Items]
Total liabilities or partially covered	5,352,894	4,951,078	R$ 4,174,885	R$ 4,379,430
Fair value of the plan assets	(5,834,572)	(5,478,802)	(4,487,550)	(4,562,547)
Plan coverage status	(481,678)
Unrecognized asset	481,678
Total	0
Plan III
DisclosureOfActuarialEvaluationLineItems [Line Items]
Total liabilities or partially covered	1,734,568	1,565,121	1,170,528	1,181,893
Fair value of the plan assets	(1,821,055)	(1,793,516)	(1,162,969)	(1,201,802)
Plan coverage status	(86,487)
Unrecognized asset	86,487
Total	0
Assistance Plan
DisclosureOfActuarialEvaluationLineItems [Line Items]
Total liabilities or partially covered	1,035,957	933,914	756,282	1,047,284
Fair value of the plan assets	(170,923)	R$ (165,301)	R$ (162,630)	R$ (149,696)
Plan coverage status	865,034
Unrecognized asset	0
Total	R$ 865,034

XML

25. Post-Employment Benefits (Details 7) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfChangesInActuarialLiabilitiesLineItems [Line Items]
Present value of net actuarial obligations, beginning	R$ 8,123,419	R$ 7,450,113
Cost of services	21,866
Cost of interest	832,127
Present value of net actuarial obligations, ending		8,123,419	R$ 7,450,113
Unified Plan
DisclosureOfChangesInActuarialLiabilitiesLineItems [Line Items]
Present value of net actuarial obligations, beginning	5,352,894	4,951,078	4,174,885	R$ 4,379,430
Cost of services	589	329	203	471
Cost of interest	533,202	563,257	601,259	559,366
Benefits paid		(406,023)	(381,274)	(345,288)
Actuarial (gain) losses		244,253	556,005	(419,094)
Present value of net actuarial obligations, ending		5,352,894	4,951,078	4,174,885
Plan III
DisclosureOfChangesInActuarialLiabilitiesLineItems [Line Items]
Present value of net actuarial obligations, beginning	1,734,568	1,565,121	1,170,528	1,181,893
Cost of services	9,644	10,502	10,174	8,275
Cost of interest	196,009	176,878	170,531	146,595
Benefits paid		(122,841)	(109,146)	(93,670)
Actuarial (gain) losses		104,908	323,034	(72,565)
Present value of net actuarial obligations, ending		1,734,568	1,565,121	1,170,528
Assistance Plan
DisclosureOfChangesInActuarialLiabilitiesLineItems [Line Items]
Present value of net actuarial obligations, beginning	1,035,957	933,914	756,282	1,047,284
Cost of services	11,633	9,225	44,942	34,802
Cost of interest	R$ 102,916	105,987	108,465	127,622
Benefits paid		(7)	(88,259)	(74,722)
Actuarial (gain) losses		(13,162)	112,484	(378,704)
Present value of net actuarial obligations, ending		R$ 1,035,957	R$ 933,914	R$ 756,282

XML

25. Post-Employment Benefits (Details 8) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfChangesInActuarialAssetsLineItems [Line Items]
Fair value of the plan's assets, beginning	R$ 7,437,619
Fair value of the plan's assets, ending	7,826,550	R$ 7,437,619
Unified Plan
DisclosureOfChangesInActuarialAssetsLineItems [Line Items]
Fair value of the plan's assets, beginning	5,478,802	4,487,550	R$ 4,562,547
Return estimated for assets	546,699	637,541	564,872
Contributions and distributions	30,520	25,724	36,294
Benefits paid	(406,023)	(381,274)	(345,288)
Actuarial gain (losses)	184,574	709,261	(330,875)
Fair value of the plan's assets, ending	5,834,572	5,478,802	4,487,550
Plan III
DisclosureOfChangesInActuarialAssetsLineItems [Line Items]
Fair value of the plan's assets, beginning	1,793,516	1,162,969	1,201,802
Return estimated for assets	202,691	169,429	146,592
Contributions and distributions	10,505	10,174	8,275
Benefits paid	(122,841)	(109,146)	(93,670)
Actuarial gain (losses)	(62,816)	560,090	(100,030)
Fair value of the plan's assets, ending	1,821,055	1,793,516	1,162,969
Assistance Plan
DisclosureOfChangesInActuarialAssetsLineItems [Line Items]
Fair value of the plan's assets, beginning	165,301	162,630	149,696
Return estimated for assets	23,934	23,749	19,223
Contributions and distributions	0	0	0
Benefits paid	0	0	0
Actuarial gain (losses)	(18,312)	(21,078)	(6,289)
Fair value of the plan's assets, ending	R$ 170,923	R$ 165,301	R$ 162,630

XML

25. Post-Employment Benefits (Details 9) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfNetPeriodicPlanCostsGainsLineItems [Line Items]
Cost of current service	R$ 21,866
Estimated cost of interest	832,127
Expected return on plan assets	(753,809)
Expected employee contributions	(9,892)
Costs (income or loss)	90,292	R$ (29,679)	R$ (59,584)	R$ 290,931
Unified Plan
DisclosureOfNetPeriodicPlanCostsGainsLineItems [Line Items]
Cost of current service	589	329	203	471
Estimated cost of interest	533,202	563,257	601,259	559,366
Expected return on plan assets	(531,448)
Expected employee contributions	(248)
Costs (income or loss)	2,095
Plan III
DisclosureOfNetPeriodicPlanCostsGainsLineItems [Line Items]
Cost of current service	9,644	10,502	10,174	8,275
Estimated cost of interest	196,009	176,878	170,531	146,595
Expected return on plan assets	(205,782)
Expected employee contributions	(9,644)
Costs (income or loss)	(9,773)
Assistance Plan
DisclosureOfNetPeriodicPlanCostsGainsLineItems [Line Items]
Cost of current service	11,633	9,225	44,942	34,802
Estimated cost of interest	102,916	R$ 105,987	R$ 108,465	R$ 127,622
Expected return on plan assets	(16,579)
Expected employee contributions	0
Costs (income or loss)	R$ 97,970

XML

25. Post-Employment Benefits (Details 10) R$ in Thousands	12 Months Ended
	Dec. 31, 2017 BRL (R$)
Increase by 1%
Sensitivity of long-term interest rate
Impacts on the obligations of the pension	R$ (444,891)
Impacts on the obligations of healthcare program	(178,133)
Sensitivity of growth rate of the medical costs
Impacts on the obligations of healthcare program	72,077
Impact on cost of service for the following financial year of healthcare program	793
Sensitivity of the service cost
Impacts on the obligations of the pension	(49)
Impacts on the obligations of healthcare program	(1,961)
Decrease in 1%
Sensitivity of long-term interest rate
Impacts on the obligations of the pension	450,899
Impacts on the obligations of healthcare program	181,222
Sensitivity of growth rate of the medical costs
Impacts on the obligations of healthcare program	(67,341)
Impact on cost of service for the following financial year of healthcare program	(741)
Sensitivity of the service cost
Impacts on the obligations of the pension	50
Impacts on the obligations of healthcare program	R$ 1,995

XML

25. Post-Employment Benefits (Details 11) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
2018
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	R$ 566,013
2019
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	607,315
2020
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	592,828
2021
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	577,024
2022
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	560,532
2023 - 2057
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	6,807,223
Unified Plan
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	(406,023)	R$ (381,274)	R$ (345,288)
Unified Plan | 2018
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	395,584
Unified Plan | 2019
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	379,182
Unified Plan | 2020
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	362,032
Unified Plan | 2021
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	345,456
Unified Plan | 2022
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	329,172
Unified Plan | 2023 - 2057
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	3,271,908
Plan III
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	(122,841)	(109,146)	(93,670)
Plan III | 2018
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	128,975
Plan III | 2019
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	181,726
Plan III | 2020
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	184,824
Plan III | 2021
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	186,267
Plan III | 2022
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	186,851
Plan III | 2023 - 2057
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	2,945,247
Assistance Plan
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	(7)	R$ (88,259)	R$ (74,722)
Assistance Plan | 2018
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	41,454
Assistance Plan | 2019
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	46,407
Assistance Plan | 2020
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	45,972
Assistance Plan | 2021
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	45,301
Assistance Plan | 2022
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	44,509
Assistance Plan | 2023 - 2057
DisclosureOfBenefitsPayableLineItems [Line Items]
Benefits payable	R$ 590,068

XML

25. Post-Employment Benefits (Details 12)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
DisclosureOfAssetAllocationLineItems [Line Items]
Asset allocation	100.00%	100.00%
Fixed Income
DisclosureOfAssetAllocationLineItems [Line Items]
Asset allocation	87.50%	89.30%
Variable income
DisclosureOfAssetAllocationLineItems [Line Items]
Asset allocation	6.20%	6.50%
Loans
DisclosureOfAssetAllocationLineItems [Line Items]
Asset allocation	1.10%	1.30%
Real estate
DisclosureOfAssetAllocationLineItems [Line Items]
Asset allocation	1.50%	1.70%
Investment structuring
DisclosureOfAssetAllocationLineItems [Line Items]
Asset allocation	3.70%	1.20%

XML

25. Post-Employment Benefits (Details 13)	12 Months Ended
	Dec. 31, 2017
Unified Plan | Fixed Income
DisclosureOfLimitsSetByTheFundManagementLineItems [Line Items]
Target limit	91.50%	[1]
Minimum limit	77.00%
Unified Plan | Variable income
DisclosureOfLimitsSetByTheFundManagementLineItems [Line Items]
Target limit	3.00%	[1]
Minimum limit	1.00%
Unified Plan | Loans
DisclosureOfLimitsSetByTheFundManagementLineItems [Line Items]
Target limit	0.50%	[1]
Minimum limit	0.00%
Unified Plan | Real estate
DisclosureOfLimitsSetByTheFundManagementLineItems [Line Items]
Target limit	2.00%	[1]
Minimum limit	1.00%
Unified Plan | Investment structuring
DisclosureOfLimitsSetByTheFundManagementLineItems [Line Items]
Target limit	3.00%	[1]
Minimum limit	0.00%
Plan III | Fixed Income
DisclosureOfLimitsSetByTheFundManagementLineItems [Line Items]
Target limit	81.00%
Minimum limit	59.00%
Plan III | Variable income
DisclosureOfLimitsSetByTheFundManagementLineItems [Line Items]
Target limit	11.00%
Minimum limit	7.00%
Plan III | Loans
DisclosureOfLimitsSetByTheFundManagementLineItems [Line Items]
Target limit	2.00%
Minimum limit	4.00%
Plan III | Real estate
DisclosureOfLimitsSetByTheFundManagementLineItems [Line Items]
Target limit	1.00%
Minimum limit	0.00%
Plan III | Investment structuring
DisclosureOfLimitsSetByTheFundManagementLineItems [Line Items]
Target limit	5.00%
Minimum limit	0.00%

[1] Target based on the total investment of each plan.

XML

25. Post-Employment Benefits (Details 14) - shares	Dec. 31, 2017	Dec. 31, 2016
DisclosureOfPensionPlanSecuritiesLineItems [Line Items]
Defined benefit pension plan securities	0	252
Social Security Plan: Unified Plan
DisclosureOfPensionPlanSecuritiesLineItems [Line Items]
Defined benefit pension plan securities	0	66
Social Security Plan: Plan III
DisclosureOfPensionPlanSecuritiesLineItems [Line Items]
Defined benefit pension plan securities	0	186

XML

26. Customer Charges Due (Details) - BRL (R$) R$ in Thousands		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfCustomerChargesDueLineItems [Line Items]
Customer charges due		R$ 150,025	R$ 141,712	R$ 277,458
Energy Development Account (CDE)
DisclosureOfCustomerChargesDueLineItems [Line Items]
Customer charges due	[1]	121,912	136,450
Tariff flags
DisclosureOfCustomerChargesDueLineItems [Line Items]
Customer charges due		22,427	0
Global Reversal Reserve (RGR)
DisclosureOfCustomerChargesDueLineItems [Line Items]
Customer charges due		R$ 5,686	R$ 5,262

[1] Aneel published Resolutions No. 2,002/2017, No. 2,204/2017 and No. 2,231/2017.

XML

27. Research and Development and Energy Efficiency (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Amounts payable, before any related prepayments	R$ 126,471
Amounts payable to regulatory agencies	13,889
Other amounts payable	392,115
Research and development and energy efficiency	532,475	R$ 483,889	R$ 398,993
Research and development and energy efficiency, current	282,766	231,513	167,881
Research and development and energy efficiency, noncurrent	249,709	252,376	231,112
MME
DisclosureOfResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Research and development and energy efficiency	2,616	2,302	R$ 2,882
Research and Development - R&D
DisclosureOfResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Amounts payable, before any related prepayments	103,617
Amounts payable to regulatory agencies	7,848
Other amounts payable	212,504
Research and development and energy efficiency	323,969	300,993
Research and Development - R&D | National Fund for Scientific and Technological Development - FNDCT
DisclosureOfResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Amounts payable, before any related prepayments	0
Amounts payable to regulatory agencies	5,232
Other amounts payable	0
Research and development and energy efficiency	5,232	4,603
Research and Development - R&D | MME
DisclosureOfResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Amounts payable, before any related prepayments	0
Amounts payable to regulatory agencies	2,616
Other amounts payable	0
Research and development and energy efficiency	2,616	2,302
Research and Development - R&D | R&D
DisclosureOfResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Amounts payable, before any related prepayments	103,617
Amounts payable to regulatory agencies	0
Other amounts payable	212,504
Research and development and energy efficiency	316,121	294,088
Energy efficiency program - EEP
DisclosureOfResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Amounts payable, before any related prepayments	22,854
Amounts payable to regulatory agencies	6,041
Other amounts payable	179,611
Research and development and energy efficiency	208,506	182,896
Energy efficiency program - EEP | National Program of electricity conservation - Procel
DisclosureOfResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Amounts payable, before any related prepayments	0
Amounts payable to regulatory agencies	6,041
Other amounts payable	0
Research and development and energy efficiency	6,041	4,932
Energy efficiency program - EEP | EEP
DisclosureOfResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Amounts payable, before any related prepayments	22,854
Amounts payable to regulatory agencies	0
Other amounts payable	179,611
Research and development and energy efficiency	R$ 202,465	R$ 177,964

XML

27. Research and Development and Energy Efficiency (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
DisclosureOfChangesInResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Research and development and energy efficiency, beginning	R$ 483,889	R$ 398,993
Additions	117,390	100,039
Performance agreement	1,363	1,907
Selic interest rate	34,345	41,781
Payments	(51,254)	(40,042)
Concluded projects	(53,258)	(18,789)
Research and development and energy efficiency, ending	532,475	483,889
FNDCT
DisclosureOfChangesInResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Research and development and energy efficiency, beginning	4,603	5,762
Additions	29,956	25,535
Performance agreement	0	0
Selic interest rate	0	0
Payments	(29,327)	(26,694)
Concluded projects	0	0
Research and development and energy efficiency, ending	5,232	4,603
MME
DisclosureOfChangesInResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Research and development and energy efficiency, beginning	2,302	2,882
Additions	14,978	12,768
Performance agreement	0	0
Selic interest rate	0	0
Payments	(14,664)	(13,348)
Concluded projects	0	0
Research and development and energy efficiency, ending	2,616	2,302
P&D
DisclosureOfChangesInResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Research and development and energy efficiency, beginning	294,088	252,828
Additions	29,956	25,534
Performance agreement	0	0
Selic interest rate	19,544	25,861
Payments	0	0
Concluded projects	(27,467)	(10,135)
Research and development and energy efficiency, ending	316,121	294,088
Procel
DisclosureOfChangesInResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Research and development and energy efficiency, beginning	4,932	0
Additions	8,500	4,804
Performance agreement	0	0
Selic interest rate	(128)	128
Payments	(7,263)	0
Concluded projects	0	0
Research and development and energy efficiency, ending	6,041	4,932
PEE
DisclosureOfChangesInResearchAndDevelopmentAndEnergyEfficiencyLineItems [Line Items]
Research and development and energy efficiency, beginning	177,964	137,521
Additions	34,000	31,398
Performance agreement	1,363	1,907
Selic interest rate	14,929	15,792
Payments	0	0
Concluded projects	(25,791)	(8,654)
Research and development and energy efficiency, ending	R$ 202,465	R$ 177,964

XML

28. Accounts Payable Related to Concession (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfAccountsPayableRelatedToConcessionLineItems [Line Items]
Accounts payable related to concession	R$ 554,954	R$ 565,542	R$ 535,665
Accounts payable related to concession, current	62,624	66,210	61,786
Accounts payable related to concession, noncurrent	R$ 492,330	499,332	R$ 473,879
Use of Public Property
DisclosureOfAccountsPayableRelatedToConcessionLineItems [Line Items]
Public property name	HPP Mauá
Company	Copel GeT
Grant	Jun. 29, 2007
Signature	Jul. 03, 2007
Closing	07.2042
Discount rate	5.65% p.y.
Annual adjustment	IPCA
Accounts payable related to concession	R$ 16,384	16,235
Use of Public Property
DisclosureOfAccountsPayableRelatedToConcessionLineItems [Line Items]
Public property name	HPP Colider
Company	Copel GeT
Grant	Dec. 29, 2010
Signature	Jan. 17, 2011
Closing	01.2046
Discount rate	7.74% p.y.
Annual adjustment	IPCA
Accounts payable related to concession	R$ 23,188	22,783
Use of Public Property
DisclosureOfAccountsPayableRelatedToConcessionLineItems [Line Items]
Public property name	HPP Baixo Iguaçu
Company	Copel GeT
Grant	Jul. 19, 2012
Signature	Aug. 20, 2012
Closing	1.2047
Discount rate	7.74% p.y.
Annual adjustment	IPCA
Accounts payable related to concession	R$ 6,977	6,299
Use of Public Property
DisclosureOfAccountsPayableRelatedToConcessionLineItems [Line Items]
Public property name	SHP Cavernoso
Company	Copel GeT
Grant	Jul. 11, 2013
Signature	Jul. 11, 2013
Closing	07.2018
Discount rate	7.74% p.y.
Annual adjustment	IPCA
Accounts payable related to concession	R$ 27	66
Use of Public Property
DisclosureOfAccountsPayableRelatedToConcessionLineItems [Line Items]
Public property name	HPP Apucaraninha
Company	Copel GeT
Grant	Jul. 11, 2013
Signature	Jul. 11, 2013
Closing	07.2018
Discount rate	7.74% p.y.
Annual adjustment	IPCA
Accounts payable related to concession	R$ 185	460
Use of Public Property
DisclosureOfAccountsPayableRelatedToConcessionLineItems [Line Items]
Public property name	HPP Chaminé
Company	Copel GeT
Grant	Jul. 11, 2013
Signature	Jul. 11, 2013
Closing	07.2018
Discount rate	7.74% p.y.
Annual adjustment	IPCA
Accounts payable related to concession	R$ 320	795
Use of Public Property
DisclosureOfAccountsPayableRelatedToConcessionLineItems [Line Items]
Public property name	HPP Derivação Rio Jordão
Company	Copel GeT
Grant	Jul. 11, 2013
Signature	Feb. 24, 2014
Closing	02.2019
Discount rate	7.74% p.y.
Annual adjustment	IPCA
Accounts payable related to concession	R$ 313	532
Use of Public Property
DisclosureOfAccountsPayableRelatedToConcessionLineItems [Line Items]
Public property name	HPP Fundão e HPP Santa Clara
Company	Elejor
Grant	Oct. 23, 2001
Signature	Oct. 25, 2001
Closing	10.2036
Discount rate	11.00% p.y.
Annual adjustment	IGPM
Accounts payable related to concession	R$ 507,560	R$ 518,372

XML

28. Accounts Payable Related to Concession (Details 1) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfAccountsPayableRelatedToConcessionLineItems [Line Items]
Accounts payable related to concession	R$ 554,954	R$ 565,542	R$ 535,665
Nominal value
DisclosureOfAccountsPayableRelatedToConcessionLineItems [Line Items]
Accounts payable related to concession	1,273,585
Nominal value | 2018
DisclosureOfAccountsPayableRelatedToConcessionLineItems [Line Items]
Accounts payable related to concession	62,779
Nominal value | 2019
DisclosureOfAccountsPayableRelatedToConcessionLineItems [Line Items]
Accounts payable related to concession	62,246
Nominal value | 2020
DisclosureOfAccountsPayableRelatedToConcessionLineItems [Line Items]
Accounts payable related to concession	62,199
Nominal value | 2021
DisclosureOfAccountsPayableRelatedToConcessionLineItems [Line Items]
Accounts payable related to concession	62,199
Nominal value | After 2021
DisclosureOfAccountsPayableRelatedToConcessionLineItems [Line Items]
Accounts payable related to concession	1,024,162
Present value
DisclosureOfAccountsPayableRelatedToConcessionLineItems [Line Items]
Accounts payable related to concession	554,954
Present value | 2018
DisclosureOfAccountsPayableRelatedToConcessionLineItems [Line Items]
Accounts payable related to concession	62,624
Present value | 2019
DisclosureOfAccountsPayableRelatedToConcessionLineItems [Line Items]
Accounts payable related to concession	56,079
Present value | 2020
DisclosureOfAccountsPayableRelatedToConcessionLineItems [Line Items]
Accounts payable related to concession	50,597
Present value | 2021
DisclosureOfAccountsPayableRelatedToConcessionLineItems [Line Items]
Accounts payable related to concession	45,689
Present value | After 2021
DisclosureOfAccountsPayableRelatedToConcessionLineItems [Line Items]
Accounts payable related to concession	R$ 339,965

XML

28. Accounts Payable Related to Concession (Details 2) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Accounts Payable Related To Concession Details 2
Accounts payable related to concession, beginning	R$ 565,542	R$ 535,665
Additions	678	575,569
Adjust to present value	1,432	(483)
Monetary variations	53,173	103,384
Payments	(65,871)	(648,593)
Accounts payable related to concession, ending	R$ 554,954	R$ 565,542

XML

29. Other Accounts Payable (Details) - BRL (R$) R$ in Thousands		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfOtherAccountsPayableLineItems [Line Items]
Other accounts payable		R$ 194,254	R$ 295,316
Other accounts payable, current		121,405	264,791	R$ 135,709
Other accounts payable, noncurrent		72,849	30,525	R$ 30,962
Customers
DisclosureOfOtherAccountsPayableLineItems [Line Items]
Other accounts payable		33,380	32,283
Public lighting rate collected
DisclosureOfOtherAccountsPayableLineItems [Line Items]
Other accounts payable		24,101	27,565
Aneel Order No. 084/2017 provision
DisclosureOfOtherAccountsPayableLineItems [Line Items]
Other accounts payable		22,132	20,542
Financial offset for the use of water resources
DisclosureOfOtherAccountsPayableLineItems [Line Items]
Other accounts payable		21,467	28,880
Investment acquisition
DisclosureOfOtherAccountsPayableLineItems [Line Items]
Other accounts payable		12,307	9,595
Pledges in guarantee
DisclosureOfOtherAccountsPayableLineItems [Line Items]
Other accounts payable		8,837	8,067
Reimbursements to customer contributions
DisclosureOfOtherAccountsPayableLineItems [Line Items]
Other accounts payable		5,481	10,894
Agreement Ivaí Engenharia
DisclosureOfOtherAccountsPayableLineItems [Line Items]
Other accounts payable	[1]	0	122,068
Other liabilities
DisclosureOfOtherAccountsPayableLineItems [Line Items]
Other accounts payable		R$ 66,549	R$ 35,422

[1] The agreement covers the discussions on economic - financial balance of contract and extinguishes the judicial process.

XML

30. Provisions for Legal Claims (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of other provisions [line items]
Provisions for legal claims, beginning	R$ 1,273,338	R$ 1,494,936
Provision for litigations, additions	482,748	463,385
Provision for litigations, reversals	(172,808)	(356,419)
Construction cost, additions	28,788	51,822
Additions to fixed assets in progress, additions	8,140	(2,622)
Discharges	(124,395)	(193,197)
Transfers	16,253	(184,567)
Provisions for legal claims, ending	1,512,064	1,273,338
Provisions for legal claims, current	112,000	0
Provisions for legal claims, noncurrent	1,400,064	1,273,338	R$ 1,494,936
Tax
Disclosure of other provisions [line items]
Provisions for legal claims, beginning	236,877	327,048
Provision for litigations, additions	30,778	146,920
Provision for litigations, reversals	(136,771)	(203,016)
Construction cost, additions	0	0
Additions to fixed assets in progress, additions	0	0
Discharges	(433)	(1,758)
Transfers	8,090	(32,317)
Provisions for legal claims, ending	138,541	236,877
Tax | Cofins
Disclosure of other provisions [line items]
Provisions for legal claims, beginning	93,892	258,715
Provision for litigations, additions	8,888	28,563
Provision for litigations, reversals	(23,032)	(193,386)
Construction cost, additions	0	0
Additions to fixed assets in progress, additions	0	0
Discharges	0	0
Transfers	0	0
Provisions for legal claims, ending	79,748	93,892
Tax | Others
Disclosure of other provisions [line items]
Provisions for legal claims, beginning	142,985	68,333
Provision for litigations, additions	21,890	118,357
Provision for litigations, reversals	(113,739)	(9,630)
Construction cost, additions	0	0
Additions to fixed assets in progress, additions	0	0
Discharges	(433)	(1,758)
Transfers	8,090	(32,317)
Provisions for legal claims, ending	58,793	142,985
Labors
Disclosure of other provisions [line items]
Provisions for legal claims, beginning	458,901	408,133
Provision for litigations, additions	122,992	168,352
Provision for litigations, reversals	(18,518)	(9,824)
Construction cost, additions	0	0
Additions to fixed assets in progress, additions	0	0
Discharges	(87,744)	(107,760)
Transfers	0	0
Provisions for legal claims, ending	475,631	458,901
Employee benefits
Disclosure of other provisions [line items]
Provisions for legal claims, beginning	42,366	104,480
Provision for litigations, additions	61,765	7,583
Provision for litigations, reversals	(7,194)	(69,334)
Construction cost, additions	0	0
Additions to fixed assets in progress, additions	0	0
Discharges	(7,498)	(363)
Transfers	0	0
Provisions for legal claims, ending	89,439	42,366
Civil
Disclosure of other provisions [line items]
Provisions for legal claims, beginning	465,804	598,637
Provision for litigations, additions	264,605	127,755
Provision for litigations, reversals	(4,227)	(74,244)
Construction cost, additions	28,788	51,822
Additions to fixed assets in progress, additions	8,140	(2,622)
Discharges	(28,720)	(83,294)
Transfers	8,163	(152,250)
Provisions for legal claims, ending	742,553	465,804
Civil | Civil and administrative claims
Disclosure of other provisions [line items]
Provisions for legal claims, beginning	295,484	325,217
Provision for litigations, additions	255,280	99,205
Provision for litigations, reversals	(3,240)	(53,965)
Construction cost, additions	0	0
Additions to fixed assets in progress, additions	0	0
Discharges	(28,074)	(74,973)
Transfers	8,163	0
Provisions for legal claims, ending	527,613	295,484
Civil | Easements
Disclosure of other provisions [line items]
Provisions for legal claims, beginning	99,380	62,869
Provision for litigations, additions	4,593	1,786
Provision for litigations, reversals	0	(17,141)
Construction cost, additions	4,503	49,842
Additions to fixed assets in progress, additions	2,641	2,575
Discharges	(181)	(551)
Transfers	0	0
Provisions for legal claims, ending	110,936	99,380
Civil | Expropriations and property
Disclosure of other provisions [line items]
Provisions for legal claims, beginning	65,712	196,895
Provision for litigations, additions	848	26,764
Provision for litigations, reversals	(701)	(943)
Construction cost, additions	24,285	1,980
Additions to fixed assets in progress, additions	5,499	(5,197)
Discharges	(16)	(1,537)
Transfers	0	(152,250)
Provisions for legal claims, ending	95,627	65,712
Civil | Customers
Disclosure of other provisions [line items]
Provisions for legal claims, beginning	5,228	13,656
Provision for litigations, additions	3,884	0
Provision for litigations, reversals	(286)	(2,195)
Construction cost, additions	0	0
Additions to fixed assets in progress, additions	0	0
Discharges	(449)	(6,233)
Transfers	0	0
Provisions for legal claims, ending	8,377	5,228
Environmental
Disclosure of other provisions [line items]
Provisions for legal claims, beginning	1,432	868
Provision for litigations, additions	960	564
Provision for litigations, reversals	(808)	0
Construction cost, additions	0	0
Additions to fixed assets in progress, additions	0	0
Discharges	0	0
Transfers	0	0
Provisions for legal claims, ending	1,584	1,432
Regulatory
Disclosure of other provisions [line items]
Provisions for legal claims, beginning	67,958	55,770
Provision for litigations, additions	1,648	12,211
Provision for litigations, reversals	(5,290)	(1)
Construction cost, additions	0	0
Additions to fixed assets in progress, additions	0	0
Discharges	0	(22)
Transfers	0	0
Provisions for legal claims, ending	R$ 64,316	R$ 67,958

XML

30. Provisions for Legal Claims (Details 1) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Disclosure of contingent liabilities [line items]
Contingent liabilities	R$ 3,123,508	R$ 2,559,877
Tax
Disclosure of contingent liabilities [line items]
Contingent liabilities	858,082	752,625
Labors
Disclosure of contingent liabilities [line items]
Contingent liabilities	360,322	423,495
Employee benefits
Disclosure of contingent liabilities [line items]
Contingent liabilities	20,262	23,631
Civil
Disclosure of contingent liabilities [line items]
Contingent liabilities	1,091,122	594,220
Regulatory
Disclosure of contingent liabilities [line items]
Contingent liabilities	R$ 793,720	R$ 765,906

XML

31. Equity (Details)	Dec. 31, 2017 shares
Disclosure of classes of share capital [line items]
Number of shares	273,655,375
Percent	100.00%
Common
Disclosure of classes of share capital [line items]
Number of shares	145,031,080
Percent	100.00%
Class "A" Preferred
Disclosure of classes of share capital [line items]
Number of shares	328,627
Percent	100.00%
Class "B" Preferred
Disclosure of classes of share capital [line items]
Number of shares	128,295,668
Percent	100.00%
State of Paraná
Disclosure of classes of share capital [line items]
Number of shares	85,028,598
Percent	31.07%
State of Paraná | Common
Disclosure of classes of share capital [line items]
Number of shares	85,028,598
Percent	58.63%
State of Paraná | Class "A" Preferred
Disclosure of classes of share capital [line items]
Number of shares	0
Percent	0.00%
State of Paraná | Class "B" Preferred
Disclosure of classes of share capital [line items]
Number of shares	0
Percent	0.00%
BNDES
Disclosure of classes of share capital [line items]
Number of shares	65,580,781
Percent	23.96%
BNDES | Common
Disclosure of classes of share capital [line items]
Number of shares	38,298,775
Percent	26.41%
BNDES | Class "A" Preferred
Disclosure of classes of share capital [line items]
Number of shares	0
Percent	0.00%
BNDES | Class "B" Preferred
Disclosure of classes of share capital [line items]
Number of shares	27,282,006
Percent	21.26%
Eletrobrás
Disclosure of classes of share capital [line items]
Number of shares	1,530,774
Percent	0.56%
Eletrobrás | Common
Disclosure of classes of share capital [line items]
Number of shares	1,530,774
Percent	1.06%
Eletrobrás | Class "A" Preferred
Disclosure of classes of share capital [line items]
Number of shares	0
Percent	0.00%
Eletrobrás | Class "B" Preferred
Disclosure of classes of share capital [line items]
Number of shares	0
Percent	0.00%
Free float: B3
Disclosure of classes of share capital [line items]
Number of shares	87,648,065
Percent	32.03%
Free float: B3 | Common
Disclosure of classes of share capital [line items]
Number of shares	18,691,826
Percent	12.89%
Free float: B3 | Class "A" Preferred
Disclosure of classes of share capital [line items]
Number of shares	76,763
Percent	23.36%
Free float: B3 | Class "B" Preferred
Disclosure of classes of share capital [line items]
Number of shares	68,879,476
Percent	53.69%
Free float: NYSE
Disclosure of classes of share capital [line items]
Number of shares	33,101,514
Percent	12.10%
Free float: NYSE | Common
Disclosure of classes of share capital [line items]
Number of shares	1,144,316
Percent	0.79%
Free float: NYSE | Class "A" Preferred
Disclosure of classes of share capital [line items]
Number of shares	0
Percent	0.00%
Free float: NYSE | Class "B" Preferred
Disclosure of classes of share capital [line items]
Number of shares	31,957,198
Percent	24.91%
Free float: Latibex
Disclosure of classes of share capital [line items]
Number of shares	128,231
Percent	0.05%
Free float: Latibex | Common
Disclosure of classes of share capital [line items]
Number of shares	0
Percent	0.00%
Free float: Latibex | Class "A" Preferred
Disclosure of classes of share capital [line items]
Number of shares	0
Percent	0.00%
Free float: Latibex | Class "B" Preferred
Disclosure of classes of share capital [line items]
Number of shares	128,231
Percent	0.10%
Municipalities
Disclosure of classes of share capital [line items]
Number of shares	191,190
Percent	0.07%
Municipalities | Common
Disclosure of classes of share capital [line items]
Number of shares	178,393
Percent	0.12%
Municipalities | Class "A" Preferred
Disclosure of classes of share capital [line items]
Number of shares	9,326
Percent	2.84%
Municipalities | Class "B" Preferred
Disclosure of classes of share capital [line items]
Number of shares	3,471
Percent	0.00%
Other shareholders
Disclosure of classes of share capital [line items]
Number of shares	446,222
Percent	0.16%
Other shareholders | Common
Disclosure of classes of share capital [line items]
Number of shares	158,398
Percent	0.10%
Other shareholders | Class "A" Preferred
Disclosure of classes of share capital [line items]
Number of shares	242,538
Percent	73.80%
Other shareholders | Class "B" Preferred
Disclosure of classes of share capital [line items]
Number of shares	45,286
Percent	0.04%

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31. Equity (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfChangesInEquityValueAdjustmentsLineItems [Line Items]
Equity valuation adjustments, beginning	R$ 998,466	R$ 1,177,372	R$ 976,964
Adjustments to financial assets available for sale
Financial investments	3	(2)	633
Taxes on adjustments	(1)		(216)
Equity interest investments	26,135	3,614	(5)
Taxes on adjustments	(8,887)	(1,229)	(1)
Adjustments related to actuarial liabilities
Post employment benefits	(46,506)	(88,906)	410,330
Taxes on adjustments	16,827	30,174	(139,059)
Post employment benefits - equity		(852)	19,660
Realization of equity evaluation adjustment
Deemed cost of fixed assets	(108,561)	(154,102)	(137,031)
Taxes on the adjustments	36,911	52,395	46,590
Gains on Investments in equity investments	(28,650)
Taxes on adjustments	9,741
Actuarial liabilities - investment realization		(19,933)
Attributed to non-controlling interest	123	(65)	(495)
Equity valuation adjustments, ending	895,601	998,466	1,177,372
Equity Valuation Adjustments
DisclosureOfChangesInEquityValueAdjustmentsLineItems [Line Items]
Equity valuation adjustments, beginning	929,404	1,051,044	1,141,485
Adjustments to financial assets available for sale
Financial investments	0	0	0
Taxes on adjustments	0		0
Equity interest investments	0	0	0
Taxes on adjustments	0	0	0
Adjustments related to actuarial liabilities
Post employment benefits	0	0	0
Taxes on adjustments	0	0	0
Post employment benefits - equity		0	0
Realization of equity evaluation adjustment
Deemed cost of fixed assets	(108,561)	(154,102)	(137,031)
Taxes on the adjustments	36,911	52,395	46,590
Gains on Investments in equity investments	0
Taxes on adjustments	0
Actuarial liabilities - investment realization		(19,933)
Attributed to non-controlling interest	0	0	0
Equity valuation adjustments, ending	857,754	929,404	1,051,044
Equity Valuation Adjustments: Other Comprehensive Income
DisclosureOfChangesInEquityValueAdjustmentsLineItems [Line Items]
Equity valuation adjustments, beginning	69,062	126,328	(164,521)
Adjustments to financial assets available for sale
Financial investments	3	(2)	633
Taxes on adjustments	(1)		(216)
Equity interest investments	26,135	3,614	(5)
Taxes on adjustments	(8,887)	(1,229)	(1)
Adjustments related to actuarial liabilities
Post employment benefits	(46,506)	(88,906)	410,330
Taxes on adjustments	16,827	30,174	(139,059)
Post employment benefits - equity		(852)	19,660
Realization of equity evaluation adjustment
Deemed cost of fixed assets	0	0	0
Taxes on the adjustments	0	0	0
Gains on Investments in equity investments	(28,650)
Taxes on adjustments	9,741
Actuarial liabilities - investment realization		0
Attributed to non-controlling interest	123	(65)	(495)
Equity valuation adjustments, ending	R$ 37,847	R$ 69,062	R$ 126,328

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31. Equity (Details 2) - BRL (R$) R$ / shares in Units, R$ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfProposedDividendDistributionLineItems [Line Items]
Net income (loss) for the year	[1]	R$ 1,033,626	R$ 958,650	R$ 1,192,738
Legal Reserve (5%)		(51,681)	(47,933)	(59,637)
Realization of equity evaluation adjustment		71,650	101,707	90,441
Calculation basis for minimum mandatory dividends		1,053,595	1,012,424	1,223,542
Minimum mandatory dividend		263,399	253,106	305,885
Total proposed distribution		289,401	282,947	326,795
Interest on own capital, net		266,000	282,947	198,000
Tax on interest on own capital		(26,002)	(29,841)	(20,910)
Interest on own capital, net		239,998	253,106	177,090
Dividends proposed		23,401	0	128,795
Total proposed distribution, net		R$ 263,399	R$ 253,106	R$ 305,885
Gross value of dividends per share, ordinary		R$ 1.00801	R$ 0.98539	R$ 1.13716
Gross amount of dividends per class of shares, ordinary		R$ 146,193	R$ 142,912	R$ 164,924
Class "A" Preferred
DisclosureOfProposedDividendDistributionLineItems [Line Items]
Gross value of dividends per share, preferred		R$ 2.89050	R$ 2.89050	R$ 2.52507
Gross amount of dividends per class of shares, preferred		R$ 950	R$ 949	R$ 960
Class "B" Preferred
DisclosureOfProposedDividendDistributionLineItems [Line Items]
Gross value of dividends per share, preferred		R$ 1.10883	R$ 1.08410	R$ 1.25473
Gross amount of dividends per class of shares, preferred		R$ 142,258	R$ 139,086	R$ 160,911

[1] The legal reserve, proposed dividends and other corporate impacts recorded in Equity of the financial statements for the years ended December 31, 2016 and 2015 were originally made based on the profit disclosed in those financial statements and did not change due to the restatement mentioned in Note 4.1 since the information available at the time indicated that the corporate impacts would be those approved by the appropriate bodies.

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31. Equity (Details 3) - BRL (R$) R$ / shares in Units, R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Basic and diluted numerator
Basic and diluted earnings	R$ 1,033,626	R$ 895,772	R$ 1,109,549
Basic and diluted denominator
Weighted average of shares	273,655,375,000	273,655,375,000	273,655,375,000
Basic and diluted earnings per share attributable to shareholders of parent company	R$ 3.60754	R$ 3.12641	R$ 3.87253
Ordinary shares
Basic and diluted numerator
Basic and diluted earnings	R$ 523,206	R$ 453,427	R$ 561,637
Basic and diluted denominator
Weighted average of shares	145,031,080,000	145,031,080,000	145,031,080,000
Basic and diluted earnings per share attributable to shareholders of parent company	R$ 3.60754	R$ 3.12641	R$ 3.87253
Class "A" Preferred
Basic and diluted numerator
Basic and diluted earnings	R$ 1,304	R$ 1,197	R$ 1,620
Basic and diluted denominator
Weighted average of shares	328,627,000	348,531,000	380,291,000
Basic and diluted earnings per share attributable to shareholders of parent company	R$ 3.96830	R$ 3.43906	R$ 4.25990
Class "B" Preferred
Basic and diluted numerator
Basic and diluted earnings	R$ 509,116	R$ 441,148	R$ 546,292
Basic and diluted denominator
Weighted average of shares	128,295,668,000	128,275,764,000	128,244,004,000
Basic and diluted earnings per share attributable to shareholders of parent company	R$ 3.96830	R$ 3.43906	R$ 4.25979

XML

32. Net Operating Revenue (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	R$ 21,574,289		R$ 21,061,792		R$ 24,673,224
PIS/Pasep and Cofins	(1,788,714)		(1,801,359)		(2,044,072)
ICMS (VAT)	(3,734,940)		(4,131,780)		(4,370,805)
Regulatory charges	(2,020,674)		(2,022,232)		(3,307,940)
Service tax (ISSQN)	(5,388)		(4,668)		(4,563)
Net operating revenues	14,024,573		13,101,753		14,945,844
Electricity sales to final customers
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	8,689,516		9,606,133		11,289,201
PIS/Pasep and Cofins	(749,683)		(884,681)		(1,045,529)
ICMS (VAT)	(2,039,245)		(2,426,940)		(2,784,289)
Regulatory charges	(1,219,055)		(1,063,007)		(1,712,463)
Service tax (ISSQN)	0		0		0
Net operating revenues	4,681,533		5,231,505		5,746,920
Electricity sales to final customers | Residential
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	2,829,626		2,841,218		3,554,995
PIS/Pasep and Cofins	(242,916)		(298,659)		(330,341)
ICMS (VAT)	(771,902)		(790,401)		(850,197)
Regulatory charges	(433,080)		(380,973)		(569,767)
Service tax (ISSQN)	0		0		0
Net operating revenues	1,381,728		1,371,185		1,804,690
Electricity sales to final customers | Industrial
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	2,382,314		3,029,411		3,829,081
PIS/Pasep and Cofins	(208,226)		(273,901)		(352,086)
ICMS (VAT)	(433,088)		(674,630)		(910,291)
Regulatory charges	(252,531)		(284,922)		(517,248)
Service tax (ISSQN)	0		0		0
Net operating revenues	1,488,469		1,795,958		2,049,456
Electricity sales to final customers | Trade, services and other activities
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	1,908,426		2,130,228		2,511,750
PIS/Pasep and Cofins	(163,834)		(194,630)		(233,626)
ICMS (VAT)	(548,328)		(622,946)		(720,302)
Regulatory charges	(291,798)		(247,449)		(401,855)
Service tax (ISSQN)	0		0		0
Net operating revenues	904,466		1,065,203		1,155,967
Electricity sales to final customers | Rural
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	772,465		815,079		546,685
PIS/Pasep and Cofins	(66,314)		(48,216)		(50,800)
ICMS (VAT)	(75,137)		(120,854)		(68,351)
Regulatory charges	(119,645)		(61,557)		(88,196)
Service tax (ISSQN)	0		0		0
Net operating revenues	511,369		584,452		339,338
Electricity sales to final customers | Public entities
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	236,719		236,550		273,120
PIS/Pasep and Cofins	(20,322)		(21,881)		(25,379)
ICMS (VAT)	(46,506)		(48,148)		(54,202)
Regulatory charges	(36,418)		(27,986)		(43,876)
Service tax (ISSQN)	0		0		0
Net operating revenues	133,473		138,535		149,663
Electricity sales to final customers | Public lighting
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	244,381		229,182		271,036
PIS/Pasep and Cofins	(20,979)		(21,199)		(25,185)
ICMS (VAT)	(70,811)		(66,481)		(79,645)
Regulatory charges	(37,359)		(26,962)		(43,302)
Service tax (ISSQN)	0		0		0
Net operating revenues	115,232		114,540		122,904
Electricity sales to final customers | Public service
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	315,585		324,465		302,534
PIS/Pasep and Cofins	(27,092)		(26,195)		(28,112)
ICMS (VAT)	(93,473)		(103,480)		(101,301)
Regulatory charges	(48,224)		(33,155)		(48,219)
Service tax (ISSQN)	0		0		0
Net operating revenues	146,796		161,635		124,902
Electricity sales to distributors
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	3,529,770		2,963,349		4,130,184
PIS/Pasep and Cofins	(300,003)		(239,531)		(350,796)
ICMS (VAT)	0		0		0
Regulatory charges	(53,413)		(47,746)		(71,947)
Service tax (ISSQN)	0		0		0
Net operating revenues	3,176,354		2,676,072		3,707,441
Electricity sales to distributors | Bilateral contracts
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	1,947,862		1,366,552		1,160,503
PIS/Pasep and Cofins	(203,994)		(134,439)		(196,524)
ICMS (VAT)	0		0		0
Regulatory charges	(30,656)		(23,361)		(20,301)
Service tax (ISSQN)	0		0		0
Net operating revenues	1,713,212		1,208,752		943,678
Electricity sales to distributors | Electric Energy Trade Chamber - CCEE
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	1,077,943		753,392		2,159,431
PIS/Pasep and Cofins	(45,889)		(23,116)		(18,079)
ICMS (VAT)	0		0		0
Regulatory charges	(16,966)		(12,879)		(37,774)
Service tax (ISSQN)	0		0		0
Net operating revenues	1,015,088		717,397		2,103,578
Electricity sales to distributors | CCEAR (auction)
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	367,970		673,154		793,036
PIS/Pasep and Cofins	(38,537)		(66,223)		(134,295)
ICMS (VAT)	0		0		0
Regulatory charges	(5,791)		(11,508)		(13,872)
Service tax (ISSQN)	0		0		0
Net operating revenues	323,642		595,423		644,869
Electricity sales to distributors | Interest
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	82,160		96,783
PIS/Pasep and Cofins	0		0
ICMS (VAT)	0		0
Regulatory charges	0		0
Service tax (ISSQN)	0		0
Net operating revenues	82,160		96,783
Electricity sales to distributors | Quota system
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	53,835		73,468		17,214
PIS/Pasep and Cofins	(11,583)		(15,753)		(1,898)
ICMS (VAT)	0		0		0
Regulatory charges	0		0		0
Service tax (ISSQN)	0		0		0
Net operating revenues	42,252		57,715		15,316
Use of the main distribution and transmission grid
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	6,442,761		6,974,829		5,879,729
PIS/Pasep and Cofins	(588,291)		(575,166)		(547,565)
ICMS (VAT)	(1,488,323)		(1,511,601)		(1,420,129)
Regulatory charges	(748,206)		(911,479)		(1,523,530)
Service tax (ISSQN)	0		0		0
Net operating revenues	3,617,941		3,976,583		2,388,505
Use of the main distribution and transmission grid | Residential
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	2,025,400		2,060,305		1,961,163
PIS/Pasep and Cofins	(189,915)		(192,823)		(183,621)
ICMS (VAT)	(572,269)		(584,025)		(547,296)
Regulatory charges	(252,690)		(306,096)		(523,264)
Service tax (ISSQN)	0		0		0
Net operating revenues	1,010,526		977,361		706,982
Use of the main distribution and transmission grid | Industrial
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	1,076,613		1,246,575		1,280,283
PIS/Pasep and Cofins	(96,059)		(112,443)		(117,076)
ICMS (VAT)	(385,725)		(391,804)		(370,565)
Regulatory charges	(126,842)		(177,993)		(333,412)
Service tax (ISSQN)	0		0		0
Net operating revenues	467,987		564,335		459,230
Use of the main distribution and transmission grid | Trade, services and other activities
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	1,310,903		1,409,771		1,399,336
PIS/Pasep and Cofins	(122,168)		(131,352)		(130,688)
ICMS (VAT)	(386,320)		(402,233)		(388,512)
Regulatory charges	(162,367)		(208,471)		(372,433)
Service tax (ISSQN)	0		0		0
Net operating revenues	640,048		667,715		507,703
Use of the main distribution and transmission grid | Rural
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	342,195		339,438		300,297
PIS/Pasep and Cofins	(32,056)		(31,752)		(28,116)
ICMS (VAT)	(25,811)		(15,451)		(5,890)
Regulatory charges	(43,365)		(51,196)		(80,913)
Service tax (ISSQN)	0		0		0
Net operating revenues	240,963		241,039		185,378
Use of the main distribution and transmission grid | Public entities
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	174,427		168,823		161,275
PIS/Pasep and Cofins	(16,355)		(15,800)		(15,100)
ICMS (VAT)	(33,384)		(33,369)		(31,870)
Regulatory charges	(21,922)		(25,224)		(43,164)
Service tax (ISSQN)	0		0		0
Net operating revenues	102,766		94,430		71,141
Use of the main distribution and transmission grid | Public lighting
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	167,907		167,255		153,826
PIS/Pasep and Cofins	(15,744)		(15,653)		(14,402)
ICMS (VAT)	(48,668)		(48,489)		(44,553)
Regulatory charges	(20,935)		(24,839)		(41,027)
Service tax (ISSQN)	0		0		0
Net operating revenues	82,560		78,274		53,844
Use of the main distribution and transmission grid | Public service
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	126,795		125,928		111,539
PIS/Pasep and Cofins	(11,889)		(11,786)		(10,443)
ICMS (VAT)	(36,146)		(36,230)		(31,443)
Regulatory charges	(15,816)		(18,703)		(29,757)
Service tax (ISSQN)	0		0		0
Net operating revenues	62,944		59,209		39,896
Use of the main distribution and transmission grid | Free consumers
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	663,248		398,024		282,241
PIS/Pasep and Cofins	(62,190)		(37,251)		(26,426)
ICMS (VAT)	0		0		0
Regulatory charges	(84,633)		(60,242)		(76,104)
Service tax (ISSQN)	0		0		0
Net operating revenues	516,425		300,531		179,711
Use of the main distribution and transmission grid | Basic network, BN connections, and connection grid
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	1,387		1,494		1,352
PIS/Pasep and Cofins	(130)		(140)		(127)
ICMS (VAT)	0		0		0
Regulatory charges	(177)		(226)		(365)
Service tax (ISSQN)	0		0		0
Net operating revenues	1,080		1,128		860
Use of the main distribution and transmission grid | Operating and maintenance income - O&M
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	113,324		151,984		91,772
PIS/Pasep and Cofins	(16,733)		(5,456)		(11,643)
ICMS (VAT)	0		0		0
Regulatory charges	(7,793)		(8,026)		(12,466)
Service tax (ISSQN)	0		0		0
Net operating revenues	88,798		138,502		67,663
Use of the main distribution and transmission grid | Interest income
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	440,562	[1]	905,232	[2]	136,645
PIS/Pasep and Cofins	(25,051)		(20,710)		(9,923)
ICMS (VAT)	0		0		0
Regulatory charges	(11,666)		(30,461)		(10,627)
Service tax (ISSQN)	0		0		0
Net operating revenues	403,845		854,061		116,095
Construction income
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	868,001		1,279,642		1,196,324
PIS/Pasep and Cofins	0		0		0
ICMS (VAT)	0		0		0
Regulatory charges	0		0		0
Service tax (ISSQN)	0		0		0
Net operating revenues	868,001		1,279,642		1,196,324
Fair value of assets from the indemnity for the concession
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	57,080		132,741		217,713
PIS/Pasep and Cofins	0		0		0
ICMS (VAT)	0		0		0
Regulatory charges	0		0		0
Service tax (ISSQN)	0		0		0
Net operating revenues	57,080		132,741		217,713
Telecommunications
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	426,773		357,361		277,876
PIS/Pasep and Cofins	(15,854)		(13,872)		(10,760)
ICMS (VAT)	(99,460)		(79,582)		(55,038)
Regulatory charges	0		0		0
Service tax (ISSQN)	(2,507)		(2,326)		(2,151)
Net operating revenues	308,952		261,581		209,927
Distribution of piped gas
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	621,992		647,579		704,625
PIS/Pasep and Cofins	(58,959)		(62,037)		(66,877)
ICMS (VAT)	(107,912)		(113,657)		(111,349)
Regulatory charges	0		0		0
Service tax (ISSQN)	(306)		0		0
Net operating revenues	454,815		471,885		526,399
Sectorial financial assets and liabilities result
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	767,040		(1,079,662)		858,170
PIS/Pasep and Cofins	(48,214)		0		0
ICMS (VAT)	0		0		0
Regulatory charges	0		0		0
Service tax (ISSQN)	0		0		0
Net operating revenues	718,826		(1,079,662)		858,170
Other operating revenue
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	171,356		179,820		119,402
PIS/Pasep and Cofins	(27,710)		(26,072)		(22,545)
ICMS (VAT)	0		0		0
Regulatory charges	0		0		0
Service tax (ISSQN)	(2,575)		(2,342)		(2,412)
Net operating revenues	141,071		151,406		94,445
Other operating revenue | Leasing and rent
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	109,230		103,793		88,008
PIS/Pasep and Cofins	(17,664)		(15,049)		(16,618)
ICMS (VAT)	0		0		0
Regulatory charges	0		0		0
Service tax (ISSQN)	0		0		0
Net operating revenues	91,566		88,744		71,390
Other operating revenue | Income from rendering of services
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	30,247		32,575		17,203
PIS/Pasep and Cofins	(4,891)		(4,723)		(3,248)
ICMS (VAT)	0		0		0
Regulatory charges	0		0		0
Service tax (ISSQN)	(2,575)		(2,342)		(2,412)
Net operating revenues	22,781		25,510		11,543
Other operating revenue | Charged service
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	15,981		10,148		8,773
PIS/Pasep and Cofins	(2,584)		(1,471)		(1,656)
ICMS (VAT)	0		0		0
Regulatory charges	0		0		0
Service tax (ISSQN)	0		0		0
Net operating revenues	13,397		8,677		7,117
Other operating revenue | Other income
DisclosureOfNetOperatingRevenueLineItems [Line Items]
Gross operating revenues	15,898		33,304		5,418
PIS/Pasep and Cofins	(2,571)		(4,829)		(1,023)
ICMS (VAT)	0		0		0
Regulatory charges	0		0		0
Service tax (ISSQN)	0		0		0
Net operating revenues	R$ 13,327		R$ 28,475		R$ 4,395

[1] Of the total gross revenue from Interest income, R$361,156 refers to the gain on RBSE assets (Note 10.4).

[2] Of the total gross revenue from Interest income, R$809,639 refers to the gain on RBSE assets (Note 10.4).

XML

32. Net Operating Revenue (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfLeaseAndRentalRevenueLineItems [Line Items]
Lease and rental revenue	R$ 109,230	R$ 103,793	R$ 88,008
Equipment and framework
DisclosureOfLeaseAndRentalRevenueLineItems [Line Items]
Lease and rental revenue	106,790	103,490	87,190
Facilities sharing
DisclosureOfLeaseAndRentalRevenueLineItems [Line Items]
Lease and rental revenue	2,159	248	547
Real estate
DisclosureOfLeaseAndRentalRevenueLineItems [Line Items]
Lease and rental revenue	R$ 281	R$ 55	R$ 271

XML

32. Net Operating Revenue (Details 2) - Facilities sharing R$ in Thousands	Dec. 31, 2017 BRL (R$)
DisclosureOfReceivablesFromNoncancelableLeasesLineItems [Line Items]
Receivables from non-cancelable leases	R$ 20,097
Less than 1 year
DisclosureOfReceivablesFromNoncancelableLeasesLineItems [Line Items]
Receivables from non-cancelable leases	1,079
1 to 5 years
DisclosureOfReceivablesFromNoncancelableLeasesLineItems [Line Items]
Receivables from non-cancelable leases	5,396
Over 5 years
DisclosureOfReceivablesFromNoncancelableLeasesLineItems [Line Items]
Receivables from non-cancelable leases	R$ 13,622

XML

32. Net Operating Revenue (Details 3) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfRegulatoryChargesLineItems [Line Items]
Regulatory charges	R$ 2,020,674	R$ 2,022,232	R$ 3,307,940
Energy Development Account - "CDE Energia"
DisclosureOfRegulatoryChargesLineItems [Line Items]
Regulatory charges	718,154	790,117	497,667
Energy Development Account - "CDE Uso"
DisclosureOfRegulatoryChargesLineItems [Line Items]
Regulatory charges	708,555	876,361	1,949,630
Other charges - rate flags
DisclosureOfRegulatoryChargesLineItems [Line Items]
Regulatory charges	420,027	203,671	1,120,218
Research and development and energy efficiency - R&D and EEP
DisclosureOfRegulatoryChargesLineItems [Line Items]
Regulatory charges	117,390	100,039	126,656
Global Reversion Reserve - RGR quota
DisclosureOfRegulatoryChargesLineItems [Line Items]
Regulatory charges	46,825	42,887	62,554
Inspection fee
DisclosureOfRegulatoryChargesLineItems [Line Items]
Regulatory charges	R$ 9,723	R$ 9,157	R$ 6,215

XML

33. Operating Costs and Expenses (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfOperatingCostsAndExpensesLineItems [Line Items]
Operational costs	R$ (10,665,890)	R$ (10,234,115)	R$ (11,799,316)
Selling expenses	(169,050)	(250,448)	(283,397)
General and administrative expenses	(685,675)	(741,145)	(670,606)
Other expenses, net	(464,316)	(53,638)	(158,619)
Total operating costs and expenses	(11,984,931)	(11,279,346)	(12,911,938)
Electricity purchased for resale
DisclosureOfOperatingCostsAndExpensesLineItems [Line Items]
Operational costs	(6,165,450)	(4,685,604)	(6,032,916)
Selling expenses	0	0	0
General and administrative expenses	0	0	0
Other expenses, net	0	0	0
Total operating costs and expenses	(6,165,450)	(4,685,604)	(6,032,916)
Charge of the main distribution and transmission grid
DisclosureOfOperatingCostsAndExpensesLineItems [Line Items]
Operational costs	(712,030)	(866,243)	(919,788)
Selling expenses	0	0	0
General and administrative expenses	0	0	0
Other expenses, net	0	0	0
Total operating costs and expenses	(712,030)	(866,243)	(919,788)
Personnel and management
DisclosureOfOperatingCostsAndExpensesLineItems [Line Items]
Operational costs	(984,011)	(976,027)	(863,406)
Selling expenses	(20,435)	(17,314)	(15,617)
General and administrative expenses	(338,898)	(311,077)	(289,827)
Other expenses, net	0	0	0
Total operating costs and expenses	(1,343,344)	(1,304,418)	(1,168,850)
Pension and healthcare plans
DisclosureOfOperatingCostsAndExpensesLineItems [Line Items]
Operational costs	(175,479)	(192,880)	(196,238)
Selling expenses	(2,424)	(2,616)	(2,388)
General and administrative expenses	(59,694)	(64,271)	(55,701)
Other expenses, net	0	0	0
Total operating costs and expenses	(237,597)	(259,767)	(254,327)
Materials and supplies
DisclosureOfOperatingCostsAndExpensesLineItems [Line Items]
Operational costs	(71,535)	(71,747)	(66,968)
Selling expenses	(968)	(851)	(748)
General and administrative expenses	(10,621)	(8,865)	(8,986)
Other expenses, net	0	0	0
Total operating costs and expenses	(83,124)	(81,463)	(76,702)
Materials and supplies for power electricity
DisclosureOfOperatingCostsAndExpensesLineItems [Line Items]
Operational costs	(97,360)	(33,352)	(199,323)
Selling expenses	0	0	0
General and administrative expenses	0	0	0
Other expenses, net	0	0	0
Total operating costs and expenses	(97,360)	(33,352)	(199,323)
Natural gas and supplies for gas business
DisclosureOfOperatingCostsAndExpensesLineItems [Line Items]
Operational costs	(309,542)	(325,413)	(1,176,090)
Selling expenses	0	0	0
General and administrative expenses	0	0	0
Other expenses, net	0	0	0
Total operating costs and expenses	(309,542)	(325,413)	(1,176,090)
Third-party services
DisclosureOfOperatingCostsAndExpensesLineItems [Line Items]
Operational costs	(386,435)	(369,442)	(365,745)
Selling expenses	(18,826)	(53,659)	(41,876)
General and administrative expenses	(116,254)	(127,392)	(111,882)
Other expenses, net	0	0	0
Total operating costs and expenses	(521,515)	(550,493)	(519,503)
Depreciation and amortization
DisclosureOfOperatingCostsAndExpensesLineItems [Line Items]
Operational costs	(686,007)	(664,470)	(600,240)
Selling expenses	(16)	(31)	(35)
General and administrative expenses	(32,070)	(30,290)	(68,558)
Other expenses, net	(13,506)	(13,505)	(7,639)
Total operating costs and expenses	(731,599)	(708,296)	(676,472)
Estimated losses, provisions and reversals
DisclosureOfOperatingCostsAndExpensesLineItems [Line Items]
Operational costs	122,782	(567,112)	66,029
Selling expenses	(90,478)	(184,610)	(226,837)
General and administrative expenses	0	0	0
Other expenses, net	(397,843)	(16,974)	(50,021)
Total operating costs and expenses	(365,539)	(768,696)	(210,829)
Construction cost
DisclosureOfOperatingCostsAndExpensesLineItems [Line Items]
Operational costs	(1,003,881)	(1,280,745)	(1,251,004)
Selling expenses	0	0	0
General and administrative expenses	0	0	0
Other expenses, net	0	0	0
Total operating costs and expenses	(1,003,881)	(1,280,745)	(1,251,004)
Other operating costs and expenses, net
DisclosureOfOperatingCostsAndExpensesLineItems [Line Items]
Operational costs	(196,942)	(201,080)	(193,627)
Selling expenses	(35,903)	8,633	4,104
General and administrative expenses	(128,138)	(199,250)	(135,652)
Other expenses, net	(52,967)	(23,159)	(100,959)
Total operating costs and expenses	R$ (413,950)	R$ (414,856)	R$ (426,134)

XML

33. Operating Costs and Expenses (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfElectricityPurchasedForResaleLineItems [Line Items]
Electricity purchased for resale	R$ 6,165,450	R$ 4,685,604	R$ 6,032,916
Purchase of Energy in the Regulated Environment - CCEAR
DisclosureOfElectricityPurchasedForResaleLineItems [Line Items]
Electricity purchased for resale	2,693,976	3,219,900	3,812,509
Electric Energy Trade Chamber - CCEE
DisclosureOfElectricityPurchasedForResaleLineItems [Line Items]
Electricity purchased for resale	1,766,091	535,656	982,388
Itaipu Binacional
DisclosureOfElectricityPurchasedForResaleLineItems [Line Items]
Electricity purchased for resale	1,117,957	1,089,804	1,567,844
Bilateral contracts
DisclosureOfElectricityPurchasedForResaleLineItems [Line Items]
Electricity purchased for resale	766,803	20,006	30,557
Program for incentive to alternative energy sources - Proinfa
DisclosureOfElectricityPurchasedForResaleLineItems [Line Items]
Electricity purchased for resale	217,646	242,910	177,946
Micro and mini generators and repurchase of customers
DisclosureOfElectricityPurchasedForResaleLineItems [Line Items]
Electricity purchased for resale	3,892	561	0
PIS/Pasep/Cofins taxes on electricity purchased for resale
DisclosureOfElectricityPurchasedForResaleLineItems [Line Items]
Electricity purchased for resale	R$ (400,915)	R$ (423,233)	R$ (538,328)

XML

33. Operating Costs and Expenses (Details 2) - BRL (R$) R$ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfPersonnelAndManagementExpenseLineItems [Line Items]
Personnel and management		R$ 1,343,344	R$ 1,304,418	R$ 1,168,850
Personnel
DisclosureOfPersonnelAndManagementExpenseLineItems [Line Items]
Personnel and management		1,314,468	1,278,397	1,145,011
Personnel | Wages and salaries
DisclosureOfPersonnelAndManagementExpenseLineItems [Line Items]
Personnel and management		806,119	801,789	735,072
Personnel | Social charges on payroll
DisclosureOfPersonnelAndManagementExpenseLineItems [Line Items]
Personnel and management		266,183	257,519	227,667
Personnel | Meal assistance and education allowance
DisclosureOfPersonnelAndManagementExpenseLineItems [Line Items]
Personnel and management		119,881	109,999	98,367
Personnel | Provisons for profit sharing
DisclosureOfPersonnelAndManagementExpenseLineItems [Line Items]
Personnel and management	[1]	68,817	64,814	78,462
Personnel | Compensation - Voluntary termination Program/retirement
DisclosureOfPersonnelAndManagementExpenseLineItems [Line Items]
Personnel and management		53,468	44,276	5,443
Management
DisclosureOfPersonnelAndManagementExpenseLineItems [Line Items]
Personnel and management		28,876	26,021	23,839
Management | Wages and salaries
DisclosureOfPersonnelAndManagementExpenseLineItems [Line Items]
Personnel and management		22,895	20,639	19,027
Management | Social charges on payroll
DisclosureOfPersonnelAndManagementExpenseLineItems [Line Items]
Personnel and management		5,635	5,136	4,645
Management | Other expenses
DisclosureOfPersonnelAndManagementExpenseLineItems [Line Items]
Personnel and management		R$ 346	R$ 246	R$ 167

[1] According to Federal Law No. 10,101/2000, State Decree No. 1,978/2007 and State Law No. 16,560/2010.

XML

33. Operating Costs and Expenses (Details 3) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfThirdPartyServicesExpensesLineItems [Line Items]
Third-party services expense	R$ 521,515	R$ 550,493	R$ 519,503
Maintenance of electrical system
DisclosureOfThirdPartyServicesExpensesLineItems [Line Items]
Third-party services expense	135,265	160,720	160,564
Maintenance of facilities
DisclosureOfThirdPartyServicesExpensesLineItems [Line Items]
Third-party services expense	95,176	90,451	85,192
Communication, processing and transmission of data
DisclosureOfThirdPartyServicesExpensesLineItems [Line Items]
Third-party services expense	94,230	61,317	72,042
Meter reading and bill delivery
DisclosureOfThirdPartyServicesExpensesLineItems [Line Items]
Third-party services expense	49,647	49,462	44,399
Consumer service
DisclosureOfThirdPartyServicesExpensesLineItems [Line Items]
Third-party services expense	29,789	21,000	20,478
Consulting and audit
DisclosureOfThirdPartyServicesExpensesLineItems [Line Items]
Third-party services expense	21,589	41,396	19,120
Other services
DisclosureOfThirdPartyServicesExpensesLineItems [Line Items]
Third-party services expense	R$ 95,819	R$ 126,147	R$ 117,708

XML

33. Operating Costs and Expenses (Details 4) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfEstimatedLossesProvisionsAndReversalsLineItems [Line Items]
Estimated losses, provisions and reversals	R$ 365,539	R$ 768,696	R$ 210,829
Provision (reversal) for litigations
DisclosureOfEstimatedLossesProvisionsAndReversalsLineItems [Line Items]
Estimated losses, provisions and reversals	386,373	(21,408)	48,499
Accounts receivable related to the concession compensation
DisclosureOfEstimatedLossesProvisionsAndReversalsLineItems [Line Items]
Estimated losses, provisions and reversals	(1,117)	75	0
Credits on sales and purchases of gas
DisclosureOfEstimatedLossesProvisionsAndReversalsLineItems [Line Items]
Estimated losses, provisions and reversals	(123,586)	87,479	0
Property, plant and equipment
DisclosureOfEstimatedLossesProvisionsAndReversalsLineItems [Line Items]
Estimated losses, provisions and reversals	1,921	494,023	(66,029)
Allowance for doubtful accounts (Client and Other credits)
DisclosureOfEstimatedLossesProvisionsAndReversalsLineItems [Line Items]
Estimated losses, provisions and reversals	90,589	179,908	226,838
Tax credits estimated losses
DisclosureOfEstimatedLossesProvisionsAndReversalsLineItems [Line Items]
Estimated losses, provisions and reversals	11,470	23,917	1,521
Estimated losses (reversion) in consortiums
DisclosureOfEstimatedLossesProvisionsAndReversalsLineItems [Line Items]
Estimated losses, provisions and reversals	R$ (111)	R$ 4,702	R$ 0

XML

33. Operating Costs and Expenses (Details 5) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfConstructionCostsLineItems [Line Items]
Construction cost	R$ 1,003,881	R$ 1,280,745	R$ 1,251,004
Third-party services
DisclosureOfConstructionCostsLineItems [Line Items]
Construction cost	437,788	495,309	504,197
Materials and supplies
DisclosureOfConstructionCostsLineItems [Line Items]
Construction cost	387,278	588,414	574,132
Personnel
DisclosureOfConstructionCostsLineItems [Line Items]
Construction cost	143,266	135,272	100,299
Others
DisclosureOfConstructionCostsLineItems [Line Items]
Construction cost	R$ 35,549	R$ 61,750	R$ 72,376

XML

33. Operating Costs and Expenses (Details 6) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfOtherOperatingCostsAndExpensesLineItems [Line Items]
Other operating costs and expenses, net	R$ 413,950	R$ 414,856	R$ 426,134
Financial offset for the use of water resources
DisclosureOfOtherOperatingCostsAndExpensesLineItems [Line Items]
Other operating costs and expenses, net	110,971	183,014	155,147
Taxes
DisclosureOfOtherOperatingCostsAndExpensesLineItems [Line Items]
Other operating costs and expenses, net	87,759	29,443	24,237
Losses in the decommissioning and disposal of assets
DisclosureOfOtherOperatingCostsAndExpensesLineItems [Line Items]
Other operating costs and expenses, net	58,569	43,496	53,266
Compensation
DisclosureOfOtherOperatingCostsAndExpensesLineItems [Line Items]
Other operating costs and expenses, net	45,712	89,531	50,541
Leasing and rent
DisclosureOfOtherOperatingCostsAndExpensesLineItems [Line Items]
Other operating costs and expenses, net	32,037	35,453	33,961
Advertising and publicity
DisclosureOfOtherOperatingCostsAndExpensesLineItems [Line Items]
Other operating costs and expenses, net	27,768	37,451	25,867
Result of the change in the investment valuation method
DisclosureOfOtherOperatingCostsAndExpensesLineItems [Line Items]
Other operating costs and expenses, net	0	(52,107)	0
Result of disposal of investment
DisclosureOfOtherOperatingCostsAndExpensesLineItems [Line Items]
Other operating costs and expenses, net	(28,650)	0	0
Other net costs and expenses
DisclosureOfOtherOperatingCostsAndExpensesLineItems [Line Items]
Other operating costs and expenses, net	R$ 79,784	R$ 48,575	R$ 83,115

XML

33. Operating Costs and Expenses (Details 7) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfLeasingAndRentExpenseLineItems [Line Items]
Leasing and rent expense	R$ 32,037	R$ 35,453	R$ 33,961
Real estate
DisclosureOfLeasingAndRentExpenseLineItems [Line Items]
Leasing and rent expense	29,749	29,911	27,830
Others
DisclosureOfLeasingAndRentExpenseLineItems [Line Items]
Leasing and rent expense	3,588	6,919	7,434
PIS and Cofins credits
DisclosureOfLeasingAndRentExpenseLineItems [Line Items]
Leasing and rent expense	R$ (1,300)	R$ (1,377)	R$ (1,303)

XML

33. Operating Costs and Expenses (Details 8) - Rental of wind farm lands R$ in Thousands	Dec. 31, 2017 BRL (R$)
DisclosureOfCommitmentsFromNoncancelableLeasesAndRentsLineItems [Line Items]
Commitments from non-cancelable leases and rents	R$ 217,064
Less than 1 year
DisclosureOfCommitmentsFromNoncancelableLeasesAndRentsLineItems [Line Items]
Commitments from non-cancelable leases and rents	4,600
1 to 5 years
DisclosureOfCommitmentsFromNoncancelableLeasesAndRentsLineItems [Line Items]
Commitments from non-cancelable leases and rents	29,323
Over 5 years
DisclosureOfCommitmentsFromNoncancelableLeasesAndRentsLineItems [Line Items]
Commitments from non-cancelable leases and rents	R$ 183,141

XML

34. Financial Results (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income	R$ 699,310	R$ 903,936	R$ 769,627
Financial expenses	1,447,750	1,498,592	1,197,329
Total financial results	(748,440)	(594,656)	(427,702)
Monetary and cambial variation and debt charges
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses	993,970	1,072,875	751,524
Monetary variation and adjust to present value of accounts payable related to the concession
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses	65,418	90,480	101,072
Interest and monetary variation of CRC transfer
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses	51,211	5,235	0
PIS/Pasep/Cofins taxes on interest on capital
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses	45,196	40,607	42,627
Interest on R&D and EEP
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses	34,345	41,781	34,060
Remuneration of net sectorial assets and liabilities
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses	29,622	13,947	0
Monetary variation over the Itaipu power purchase
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses	12,264	20,597	96,162
Provision for impairment of financial assets
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses	5,372	4,300	99,031
Other financial expenses
DisclosureOfFinancialResultsLineItems [Line Items]
Financial expenses	210,352	208,770	72,853
Arrears charges on energy bills
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income	191,554	221,673	168,796
Interest and monetary variation of CRC transfer
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income	141,923	194,153	217,722
Return on financial investments held for trading
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income	95,221	182,750	139,056
Remuneration of net sectorial assets and liabilities
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income	20,493	27,734	121,401
Monetary variation over the Itaipu power purchase
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income	17,777	39,283	25,198
Monetary variation and adjust to present value of accounts payable related to the concession
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income	10,813	1,116	2,122
Return on financial investments held for sale
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income	19,302	13,497	16,160
Other financial income
DisclosureOfFinancialResultsLineItems [Line Items]
Financial income	R$ 202,227	R$ 223,730	R$ 79,172

XML

35. Operating Segments (Details) - BRL (R$) R$ in Thousands		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of operating segments [line items]
TOTAL ASSETS		R$ 33,162,377	R$ 30,288,900	R$ 28,843,671
CURRENT ASSETS		5,701,834	4,237,241	6,821,637
NON-CURRENT ASSETS		27,460,543	26,051,659	22,022,034
Long Term Assets		8,607,626	7,904,735	4,951,792
Investments		2,570,643	2,344,512	2,232,484
Property, Plant and Equipment		9,829,450	8,934,303	8,692,682
Intangible Assets		6,452,824	6,459,812	6,145,076
Electric Energy  GET
Disclosure of operating segments [line items]
TOTAL ASSETS		17,110,518	15,433,988	13,626,886
CURRENT ASSETS		1,461,512	1,122,399	2,126,024
NON-CURRENT ASSETS		15,649,006	14,311,589	11,500,862
Long Term Assets		4,037,312	3,680,669	1,568,330
Investments		2,424,081	2,125,701	1,525,356
Property, Plant and Equipment		8,924,508	8,223,951	8,138,199
Intangible Assets		263,105	281,268	268,977
Electric Energy  DIS
Disclosure of operating segments [line items]
TOTAL ASSETS		11,529,588	10,085,455	10,715,266
CURRENT ASSETS		3,609,663	2,588,602	4,155,554
NON-CURRENT ASSETS		7,919,925	7,496,853	6,559,712
Long Term Assets		2,167,690	1,982,110	1,426,826
Investments		1,362	1,362	1,374
Property, Plant and Equipment		0	0	0
Intangible Assets		5,750,873	5,513,381	5,131,512
TEL
Disclosure of operating segments [line items]
TOTAL ASSETS		1,054,741	856,510	769,317
CURRENT ASSETS		102,002	89,471	179,898
NON-CURRENT ASSETS		952,739	767,039	589,419
Long Term Assets		69,543	79,853	59,031
Investments		0	0	0
Property, Plant and Equipment		866,489	667,443	512,068
Intangible Assets		16,707	19,743	18,320
GAS
Disclosure of operating segments [line items]
TOTAL ASSETS		632,910	526,477	481,303
CURRENT ASSETS		151,966	135,292	103,579
NON-CURRENT ASSETS		480,944	391,185	377,724
Long Term Assets		437,056	152,676	71,016
Investments		0	0	0
Property, Plant and Equipment		0	0	0
Intangible Assets		43,888	238,509	306,708
COM
Disclosure of operating segments [line items]
TOTAL ASSETS	[1]	208,369
CURRENT ASSETS	[1]	187,966
NON-CURRENT ASSETS	[1]	20,403
Long Term Assets	[1]	17,703
Investments	[1]	2,457
Property, Plant and Equipment	[1]	57
Intangible Assets	[1]	186
HOL
Disclosure of operating segments [line items]
TOTAL ASSETS		3,211,162	3,351,656	3,641,088
CURRENT ASSETS		1,035,545	941,761	873,169
NON-CURRENT ASSETS		2,175,617	2,409,895	2,767,919
Long Term Assets		2,019,192	2,145,759	2,016,463
Investments		115,765	217,449	705,754
Property, Plant and Equipment		38,396	42,909	42,415
Intangible Assets		2,264	3,778	3,287
Intersegment operations
Disclosure of operating segments [line items]
TOTAL ASSETS		(584,911)	(373,483)	(390,189)
CURRENT ASSETS		(846,820)	(640,284)	(616,587)
NON-CURRENT ASSETS		261,909	266,801	226,398
Long Term Assets		(140,870)	(136,332)	(189,874)
Investments		26,978	0	0
Property, Plant and Equipment		0	0	0
Intangible Assets		R$ 375,801	R$ 403,133	R$ 416,272

[1] In 2017, the sale of electric energy became a reportable segment.

XML

35. Operating Segments (Details 1) - BRL (R$) R$ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of operating segments [line items]
NET OPERATING REVENUE		R$ 14,024,573	R$ 13,101,753	R$ 14,945,844
Net operating revenues - third-parties		14,024,573	13,101,753	14,945,844
Net operating revenues - between segments		0	0	0
OPERATING COSTS AND EXPENSES		(11,984,931)	(11,279,346)	(12,911,938)
Energy purchased for resale		(6,165,450)	(4,685,604)	(6,032,916)
Charges for use of the main transmission grid		(712,030)	(866,243)	(919,788)
Personnel and management		(1,343,344)	(1,304,418)	(1,168,850)
Pension and healthcare plans		(237,597)	(259,767)	(254,327)
Materials and supplies		(83,124)	(81,463)	(76,702)
Raw materials and supplies for generation		(97,360)	(33,352)	(199,323)
Natural gas and supplies for gas business		(309,542)	(325,413)	(1,176,090)
Third party services		(521,515)	(550,493)	(519,503)
Depreciation and amortization		(731,599)	(708,296)	(676,472)
Provision/reversal for litigations		(386,373)	21,408	(48,501)
Impairment of assets		122,782	(581,577)	66,029
Other estimated losses, provisions and reversals		(101,948)	(208,527)	(228,357)
Construction cost		(1,003,881)	(1,280,745)	(1,251,004)
Other operating costs and expenses		(413,950)	(414,856)	(426,134)
EQUITY IN EARNINGS OF INVESTEES		101,739	166,411	87,590
PROFIT (LOSS) BEFORE FINANCIAL INCOME AND TAX		2,141,381	1,988,818	2,121,496
Financial income		699,310	903,936	769,627
Financial expenses		(1,447,750)	(1,498,592)	(1,197,329)
OPERATING PROFIT (LOSS)		1,392,941	1,394,162	1,693,794
Income tax and social contribution		(274,686)	(519,690)	(532,229)
Net income (loss)		1,118,255	874,472	1,161,565
Electricity GET GER
Disclosure of operating segments [line items]
NET OPERATING REVENUE		3,176,811	2,927,680	4,264,197
Net operating revenues - third-parties		2,851,644	2,618,869	3,954,296
Net operating revenues - between segments		325,167	308,811	309,901
OPERATING COSTS AND EXPENSES		(1,868,390)	(2,032,767)	(2,580,045)
Energy purchased for resale		(390,019)	(92,050)	(309,682)
Charges for use of the main transmission grid		(352,958)	(322,849)	(294,660)
Personnel and management		(218,456)	(208,887)	(186,385)
Pension and healthcare plans		(38,782)	(43,251)	(40,325)
Materials and supplies		(12,463)	(12,768)	(12,502)
Raw materials and supplies for generation		(102,719)	(77,797)	(996,679)
Natural gas and supplies for gas business		0	0	0
Third party services		(120,993)	(157,602)	(184,228)
Depreciation and amortization		(368,987)	(369,352)	(369,778)
Provision/reversal for litigations		(39,733)	(1,086)	89,726
Impairment of assets		3,886	(494,098)	66,029
Other estimated losses, provisions and reversals		(9,397)	(30,700)	(122,700)
Construction cost		0	0	0
Other operating costs and expenses		(217,769)	(222,327)	(218,861)
EQUITY IN EARNINGS OF INVESTEES		(5,777)	(55,284)	(4,955)
PROFIT (LOSS) BEFORE FINANCIAL INCOME AND TAX		1,302,644	894,913	1,679,197
Financial income		73,433	130,077	114,767
Financial expenses		(565,837)	(617,341)	(513,822)
OPERATING PROFIT (LOSS)		810,240	407,649	1,280,142
Income tax and social contribution		(191,899)	(205,027)	(392,507)
Net income (loss)		618,341	202,622	887,635
Electricity GET TRA
Disclosure of operating segments [line items]
NET OPERATING REVENUE		819,623	1,491,547	501,387
Net operating revenues - third-parties		640,199	1,406,335	420,451
Net operating revenues - between segments		179,424	85,212	80,936
OPERATING COSTS AND EXPENSES		(546,510)	(605,202)	(394,015)
Energy purchased for resale		0	0	0
Charges for use of the main transmission grid		0	0	0
Personnel and management		(122,515)	(116,966)	(79,873)
Pension and healthcare plans		(22,733)	(24,171)	(18,477)
Materials and supplies		(4,732)	(5,017)	(3,399)
Raw materials and supplies for generation		0	0	0
Natural gas and supplies for gas business		0	0	0
Third party services		(24,609)	(24,030)	(20,476)
Depreciation and amortization		(7,201)	(3,697)	(3,399)
Provision/reversal for litigations		(81,210)	(9,234)	35,061
Impairment of assets		0	0	0
Other estimated losses, provisions and reversals		1,107	(975)	0
Construction cost		(272,216)	(406,345)	(287,247)
Other operating costs and expenses		(12,401)	(14,767)	(16,205)
EQUITY IN EARNINGS OF INVESTEES		93,145	117,970	22,853
PROFIT (LOSS) BEFORE FINANCIAL INCOME AND TAX		366,258	1,004,315	130,225
Financial income		13,313	21,339	33,198
Financial expenses		(123,707)	(108,538)	(9,583)
OPERATING PROFIT (LOSS)		255,864	917,116	153,840
Income tax and social contribution		(30,515)	(220,512)	(30,966)
Net income (loss)		225,349	696,604	122,874
Electric Energy  DIS
Disclosure of operating segments [line items]
NET OPERATING REVENUE		9,358,664	8,344,765	9,797,855
Net operating revenues - third-parties		9,324,633	8,313,141	9,770,086
Net operating revenues - between segments		34,031	31,624	27,769
OPERATING COSTS AND EXPENSES		(9,071,359)	(8,502,377)	(9,516,397)
Energy purchased for resale		(5,717,970)	(4,893,230)	(6,007,222)
Charges for use of the main transmission grid		(554,805)	(642,753)	(706,680)
Personnel and management		(822,963)	(804,974)	(699,891)
Pension and healthcare plans		(154,285)	(163,329)	(165,635)
Materials and supplies		(60,320)	(59,178)	(55,531)
Raw materials and supplies for generation		0	0	0
Natural gas and supplies for gas business		0	0	0
Third party services		(347,393)	(348,479)	(353,773)
Depreciation and amortization		(285,835)	(274,180)	(243,645)
Provision/reversal for litigations		(168,600)	(128,899)	(164,615)
Impairment of assets		0	0	0
Other estimated losses, provisions and reversals		(83,916)	(171,045)	(104,121)
Construction cost		(717,351)	(849,275)	(896,924)
Other operating costs and expenses		(157,921)	(167,035)	(118,360)
EQUITY IN EARNINGS OF INVESTEES		0	0	0
PROFIT (LOSS) BEFORE FINANCIAL INCOME AND TAX		287,305	(157,612)	281,458
Financial income		380,597	396,880	354,626
Financial expenses		(343,540)	(401,863)	(340,439)
OPERATING PROFIT (LOSS)		324,362	(162,595)	295,645
Income tax and social contribution		22,893	(17,851)	(89,591)
Net income (loss)		347,255	(180,446)	206,054
TEL
Disclosure of operating segments [line items]
NET OPERATING REVENUE		380,550	325,115	272,247
Net operating revenues - third-parties		306,473	258,794	207,091
Net operating revenues - between segments		74,077	66,321	65,156
OPERATING COSTS AND EXPENSES		(286,363)	(241,848)	(203,878)
Energy purchased for resale		0	0	0
Charges for use of the main transmission grid		0	0	0
Personnel and management		(107,874)	(101,397)	(87,393)
Pension and healthcare plans		(14,800)	(18,827)	(17,516)
Materials and supplies		(2,978)	(2,044)	(2,745)
Raw materials and supplies for generation		0	0	0
Natural gas and supplies for gas business		0	0	0
Third party services		(67,612)	(46,552)	(35,900)
Depreciation and amortization		(39,553)	(34,645)	(31,510)
Provision/reversal for litigations		(3,648)	(4,653)	(3,742)
Impairment of assets		0	0	0
Other estimated losses, provisions and reversals		(8,309)	(2,598)	(987)
Construction cost		0	0	0
Other operating costs and expenses		(41,589)	(31,132)	(24,085)
EQUITY IN EARNINGS OF INVESTEES		0	0	0
PROFIT (LOSS) BEFORE FINANCIAL INCOME AND TAX		94,187	83,267	68,369
Financial income		11,828	13,489	5,939
Financial expenses		(30,691)	(23,100)	(6,459)
OPERATING PROFIT (LOSS)		75,324	73,656	67,849
Income tax and social contribution		(21,272)	(15,324)	(13,205)
Net income (loss)		54,052	58,332	54,644
GAS
Disclosure of operating segments [line items]
NET OPERATING REVENUE		515,563	542,822	1,391,474
Net operating revenues - third-parties		510,010	498,376	593,920
Net operating revenues - between segments		5,553	44,446	797,554
OPERATING COSTS AND EXPENSES		(309,213)	(534,817)	(1,360,357)
Energy purchased for resale		0	0	0
Charges for use of the main transmission grid		0	0	0
Personnel and management		(35,761)	(32,765)	(30,715)
Pension and healthcare plans		(3,577)	(3,596)	(3,264)
Materials and supplies		(1,936)	(1,768)	(1,937)
Raw materials and supplies for generation		0	0	0
Natural gas and supplies for gas business		(309,542)	(325,413)	(1,176,090)
Third party services		(22,670)	(20,082)	(20,282)
Depreciation and amortization		(28,753)	(25,251)	(21,532)
Provision/reversal for litigations		854	(1,036)	(7,744)
Impairment of assets		123,586	(87,479)	0
Other estimated losses, provisions and reversals		(1,433)	(3,209)	(549)
Construction cost		(14,314)	(25,125)	(66,833)
Other operating costs and expenses		(15,667)	(9,093)	(31,411)
EQUITY IN EARNINGS OF INVESTEES		0	0	0
PROFIT (LOSS) BEFORE FINANCIAL INCOME AND TAX		206,350	8,005	31,117
Financial income		38,821	13,551	14,968
Financial expenses		(64,433)	(14,973)	(13,898)
OPERATING PROFIT (LOSS)		180,738	6,583	32,187
Income tax and social contribution		(66,785)	(1,632)	(9,119)
Net income (loss)		113,953	4,951	23,068
COM
Disclosure of operating segments [line items]
NET OPERATING REVENUE	[1]	664,495
Net operating revenues - third-parties	[1]	664,495
Net operating revenues - between segments	[1]	0
OPERATING COSTS AND EXPENSES	[1]	(654,445)
Energy purchased for resale	[1]	(654,026)
Charges for use of the main transmission grid	[1]	0
Personnel and management	[1]	(12,993)
Pension and healthcare plans	[1]	(1,415)
Materials and supplies	[1]	(27)
Raw materials and supplies for generation	[1]	0
Natural gas and supplies for gas business	[1]	0
Third party services	[1]	(1,280)
Depreciation and amortization	[1]	(9)
Provision/reversal for litigations	[1]	(156)
Impairment of assets	[1]	0
Other estimated losses, provisions and reversals	[1]	0
Construction cost	[1]	0
Other operating costs and expenses	[1]	15,461
EQUITY IN EARNINGS OF INVESTEES	[1]	(564)
PROFIT (LOSS) BEFORE FINANCIAL INCOME AND TAX	[1]	9,486
Financial income	[1]	6,515
Financial expenses	[1]	(322)
OPERATING PROFIT (LOSS)	[1]	15,679
Income tax and social contribution	[1]	(2,638)
Net income (loss)	[1]	13,041
HOL
Disclosure of operating segments [line items]
NET OPERATING REVENUE		0	6,238	0
Net operating revenues - third-parties		0	6,238	0
Net operating revenues - between segments		0	0	0
OPERATING COSTS AND EXPENSES		(139,784)	101,251	(138,672)
Energy purchased for resale		0	(9,119)	0
Charges for use of the main transmission grid		0	0	0
Personnel and management		(22,782)	(39,429)	(84,593)
Pension and healthcare plans		(2,005)	(6,593)	(9,110)
Materials and supplies		(668)	(688)	(588)
Raw materials and supplies for generation		0	0	0
Natural gas and supplies for gas business		0	0	0
Third party services		(15,089)	(26,755)	(15,472)
Depreciation and amortization		(1,261)	(1,171)	(6,608)
Provision/reversal for litigations		(93,880)	166,316	2,813
Impairment of assets		(4,690)	0	0
Other estimated losses, provisions and reversals		0	0	(7)
Construction cost		0	0	0
Other operating costs and expenses		591	18,690	(25,107)
EQUITY IN EARNINGS OF INVESTEES		14,935	103,725	69,692
PROFIT (LOSS) BEFORE FINANCIAL INCOME AND TAX		(124,849)	211,214	(68,980)
Financial income		186,660	331,646	248,350
Financial expenses		(331,077)	(335,823)	(315,252)
OPERATING PROFIT (LOSS)		(269,266)	207,037	(135,882)
Income tax and social contribution		(15,530)	59,344	3,159
Net income (loss)		(253,736)	147,693	(132,723)
Intersegment operations
Disclosure of operating segments [line items]
NET OPERATING REVENUE		(891,133)	(536,414)	(1,281,316)
Net operating revenues - third-parties		(272,881)	0	0
Net operating revenues - between segments		(618,252)	(536,414)	(1,281,316)
OPERATING COSTS AND EXPENSES		891,133	536,414	1,281,426
Energy purchased for resale		596,565	308,795	283,988
Charges for use of the main transmission grid		195,733	99,359	81,552
Personnel and management		0	0	0
Pension and healthcare plans		0	0	0
Materials and supplies		0	0	0
Raw materials and supplies for generation		5,359	44,445	797,356
Natural gas and supplies for gas business		0	0	0
Third party services		78,131	73,007	110,628
Depreciation and amortization		0	0	0
Provision/reversal for litigations		0	0	0
Impairment of assets		0	0	0
Other estimated losses, provisions and reversals		0	0	7
Construction cost		0	0	0
Other operating costs and expenses		15,345	10,808	7,895
EQUITY IN EARNINGS OF INVESTEES		0	0	0
PROFIT (LOSS) BEFORE FINANCIAL INCOME AND TAX		0	0	110
Financial income		(11,857)	(3,046)	(2,221)
Financial expenses		11,857	3,046	2,124
OPERATING PROFIT (LOSS)		0	0	13
Income tax and social contribution		0	0	0
Net income (loss)		R$ 0	R$ 0	R$ 13

[1] In 2017, the sale of electric energy became a reportable segment.

XML

35. Operating Segments (Details 2) - BRL (R$) R$ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of operating segments [line items]
Additions to property, plant and equipment		R$ 1,316,415	R$ 807,833	R$ 825,722
Reversal of estimated losses				56,405
Total				882,127
Additions to intangible assets		778,386	928,727	968,802
Electric Energy  GET
Disclosure of operating segments [line items]
Additions to property, plant and equipment		1,077,088	619,964	724,538
Reversal of estimated losses				56,405
Total				780,943
Additions to intangible assets		3,996	3,207	5,343
Electric Energy  DIS
Disclosure of operating segments [line items]
Additions to property, plant and equipment		0	0	0
Reversal of estimated losses				0
Total				0
Additions to intangible assets		757,709	892,693	888,906
TEL
Disclosure of operating segments [line items]
Additions to property, plant and equipment		238,944	187,313	100,998
Reversal of estimated losses				0
Total				100,998
Additions to intangible assets		2,200	6,447	4,427
GAS
Disclosure of operating segments [line items]
Additions to property, plant and equipment		0	0	0
Reversal of estimated losses				0
Total				0
Additions to intangible assets		13,745	25,847	69,592
COM
Disclosure of operating segments [line items]
Additions to property, plant and equipment	[1]	7
Additions to intangible assets	[1]	101
HOL
Disclosure of operating segments [line items]
Additions to property, plant and equipment		376	556	186
Reversal of estimated losses				0
Total				186
Additions to intangible assets		R$ 635	R$ 533	R$ 534

[1] In 2017, the sale of electric energy became a reportable segment.

XML

36. Financial Instruments (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Financial assets
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial assets, book value	R$ 11,014,971	R$ 9,872,799	R$ 9,283,131
Total financial assets, fair value	11,188,328	10,021,264	9,208,663
Financial assets | Trading securities
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial assets, book value	1,047,247	1,110,752	1,705,181
Total financial assets, fair value	1,047,247	1,110,752	1,705,181
Financial assets | Trading securities | Cash and cash equivalents
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial assets, book value	1,040,075	982,073	1,480,727
Total financial assets, fair value	1,040,075	982,073	1,480,727
Financial assets | Trading securities | Bonds and securities
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial assets, book value	0	3,385	2,565
Total financial assets, fair value	0	3,385	2,565
Financial assets | Trading securities | Bonds and securities
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial assets, book value	7,172	125,294	221,889
Total financial assets, fair value	7,172	125,294	221,889
Financial assets | Loans and receivables
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial assets, book value	8,983,441	7,468,477	6,755,451
Total financial assets, fair value	9,156,798	7,616,942	6,680,983
Financial assets | Loans and receivables | Pledges and restricted deposits linked
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial assets, book value	59,372	1,294	2,000
Total financial assets, fair value	59,372	1,294	2,000
Financial assets | Loans and receivables | Trade accounts receivable
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial assets, book value	2,994,322	2,488,141	3,107,889
Total financial assets, fair value	2,994,322	2,488,141	3,107,889
Financial assets | Loans and receivables | CRC Transferred to the State Government of Paraná
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial assets, book value	1,516,362	1,522,735	1,383,242
Total financial assets, fair value	1,620,212	1,610,269	1,343,497
Financial assets | Loans and receivables | Sectorial financial assets
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial assets, book value	343,218	0	1,045,662
Total financial assets, fair value	343,218	0	1,045,662
Financial assets | Loans and receivables | Accounts receivable related to the concession
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial assets, book value	3,219,437	2,612,418	943,473
Total financial assets, fair value	3,219,437	2,612,418	943,473
Financial assets | Loans and receivables | Accounts receivable related to the concession - bonus from the grant
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial assets, book value	606,479	586,706	0
Total financial assets, fair value	694,463	673,545	0
Financial assets | Loans and receivables | State of Paraná - Government Programs
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial assets, book value	130,417	155,141	187,048
Total financial assets, fair value	130,417	155,141	187,048
Financial assets | Loans and receivables | Mutual Related Parties
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial assets, book value	38,169	28,968	0
Total financial assets, fair value	38,169	28,968	0
Financial assets | Loans and receivables | Collaterals and escrow accounts STN
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial assets, book value	75,665	73,074	86,137
Total financial assets, fair value	57,188	47,166	51,414
Financial assets | Available for sale
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial assets, book value	984,283	1,293,570	822,499
Total financial assets, fair value	984,283	1,293,570	822,499
Financial assets | Available for sale | Bonds and securities
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial assets, book value	687	1,567	2,728
Total financial assets, fair value	687	1,567	2,728
Financial assets | Available for sale | Bonds and securities
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial assets, book value	211,804	201,499	158,449
Total financial assets, fair value	211,804	201,499	158,449
Financial assets | Available for sale | Accounts receivable related to the concession
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial assets, book value	684,206	614,806	424,140
Total financial assets, fair value	684,206	614,806	424,140
Financial assets | Available for sale | Accounts receivable related to the concession compensation
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial assets, book value	68,859	67,401	219,556
Total financial assets, fair value	68,859	67,401	219,556
Financial assets | Available for sale | Other temporary investments
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial assets, book value	8,958	408,297	17,626
Total financial assets, fair value	8,958	408,297	17,626
Financial assets | Available for sale | Other temporary investments
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial assets, book value	9,769	0	0
Total financial assets, fair value	9,769	0	0
Financial liabilities
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial liabilities, book value	13,078,518	11,172,513	10,109,441
Total financial liabilities, fair value	12,871,041	10,864,489	9,664,756
Financial liabilities | Other financial liabilities | Sectorial financial liabilities
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial liabilities, book value	283,519	278,992	0
Total financial liabilities, fair value	283,519	278,992	0
Financial liabilities | Other financial liabilities | Ordinary financing of taxes with the federal tax authorities
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial liabilities, book value	148,845	198,527	193,739
Total financial liabilities, fair value	142,702	183,573	171,119
Financial liabilities | Other financial liabilities | Special Tax Regularization Program - Pert
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial liabilities, book value	533,671	0	0
Total financial liabilities, fair value	431,036	0	0
Financial liabilities | Other financial liabilities | Suppliers
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial liabilities, book value	1,727,046	1,292,350	1,619,049
Total financial liabilities, fair value	1,727,046	1,292,350	1,619,049
Financial liabilities | Other financial liabilities | Loans and financing
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial liabilities, book value	3,759,505	4,046,293	4,077,060
Total financial liabilities, fair value	3,569,856	3,677,926	3,539,257
Financial liabilities | Other financial liabilities | Debentures
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial liabilities, book value	6,070,978	4,790,809	3,683,928
Total financial liabilities, fair value	6,070,978	4,790,809	3,683,928
Financial liabilities | Other financial liabilities | Payable related to concession
DisclosureOfFinancialAssetsAndLiabilitiesLineItems [Line Items]
Total financial liabilities, book value	554,954	565,542	535,665
Total financial liabilities, fair value	R$ 645,904	R$ 640,839	R$ 651,403

XML

36. Financial Instruments (Details 1) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of credit risk exposure [line items]
Exposure to credit risk	R$ 11,014,971	R$ 9,872,799	R$ 9,283,131
Cash and cash equivalents
Disclosure of credit risk exposure [line items]
Exposure to credit risk	1,040,075	982,073	1,480,727
Bonds and securities
Disclosure of credit risk exposure [line items]
Exposure to credit risk	219,663	331,745	385,631
Pledges and restricted deposits linked
Disclosure of credit risk exposure [line items]
Exposure to credit risk	135,037	74,368	88,137
Trade accounts receivable
Disclosure of credit risk exposure [line items]
Exposure to credit risk	2,994,322	2,488,141	3,107,889
CRC Transferred to the State Government of Paraná
Disclosure of credit risk exposure [line items]
Exposure to credit risk	1,516,362	1,522,735	1,383,242
Sectorial financial assets
Disclosure of credit risk exposure [line items]
Exposure to credit risk	343,218	0	1,045,662
Accounts receivable related to the concession
Disclosure of credit risk exposure [line items]
Exposure to credit risk	3,903,643	3,227,224	1,367,613
Accounts receivable related to the concession - bonus from the grant
Disclosure of credit risk exposure [line items]
Exposure to credit risk	606,479	586,706	0
Accounts receivable related to the concession compensation
Disclosure of credit risk exposure [line items]
Exposure to credit risk	68,859	67,401	219,556
State of Paraná - Government Programs
Disclosure of credit risk exposure [line items]
Exposure to credit risk	130,417	155,141	187,048
Mutual Related Parties
Disclosure of credit risk exposure [line items]
Exposure to credit risk	38,169	28,968	0
Other temporary investments
Disclosure of credit risk exposure [line items]
Exposure to credit risk	R$ 18,727	R$ 408,297	R$ 17,626

XML

36. Financial Instruments (Details 2) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016
DisclosureOfUndiscountedSettlementAmountsLineItems [Line Items]
Less than 1 month	R$ 1,420,911	R$ 1,229,118
1 to 3 months	409,289	253,679
3 months to 1 year	3,129,911	3,482,742
1 to 5 years	8,391,705	6,667,722
Over 5 years	3,758,903	3,991,092
Total liabilities	17,110,719	15,624,353
Loans and financing
DisclosureOfUndiscountedSettlementAmountsLineItems [Line Items]
Less than 1 month	67,457	90,265
1 to 3 months	150,634	164,214
3 months to 1 year	775,871	1,588,764
1 to 5 years	2,429,424	1,873,952
Over 5 years	1,340,528	1,556,703
Total liabilities	4,763,914	5,273,898
Debentures
DisclosureOfUndiscountedSettlementAmountsLineItems [Line Items]
Less than 1 month	16,985	8,725
1 to 3 months	22,149	19,929
3 months to 1 year	1,923,880	1,545,694
1 to 5 years	5,160,164	4,147,064
Over 5 years	453,807	583,869
Total liabilities	7,576,985	6,305,281
Payable related to concession use of public property
DisclosureOfUndiscountedSettlementAmountsLineItems [Line Items]
Less than 1 month	5,429	5,494
1 to 3 months	10,859	10,988
3 months to 1 year	49,777	50,331
1 to 5 years	293,984	300,343
Over 5 years	1,455,541	1,850,518
Total liabilities	1,815,590	2,217,674
Suppliers
DisclosureOfUndiscountedSettlementAmountsLineItems [Line Items]
Less than 1 month	1,305,653	1,106,430
1 to 3 months	174,478	21,619
3 months to 1 year	143,558	124,060
1 to 5 years	103,357	40,239
Over 5 years	0	2
Total liabilities	1,727,046	1,292,350
Ordinary financing of taxes with the federal tax authorities
DisclosureOfUndiscountedSettlementAmountsLineItems [Line Items]
Less than 1 month	5,535	5,133
1 to 3 months	11,141	10,392
3 months to 1 year	51,261	48,578
1 to 5 years	89,860	161,534
Over 5 years	0	0
Total liabilities	157,797	225,637
Pert
DisclosureOfUndiscountedSettlementAmountsLineItems [Line Items]
Less than 1 month	3,693
1 to 3 months	7,445
3 months to 1 year	34,469
1 to 5 years	214,111
Over 5 years	509,027
Total liabilities	768,745
Sectorial financial liabilities
DisclosureOfUndiscountedSettlementAmountsLineItems [Line Items]
Less than 1 month	16,159	13,071
1 to 3 months	32,583	26,537
3 months to 1 year	151,095	125,315
1 to 5 years	100,805	144,590
Over 5 years	0	0
Total liabilities	R$ 300,642	R$ 309,513

XML

36. Financial Instruments (Details 3) - BRL (R$) R$ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financial assets
DisclosureOfForeignExchangeRiskLineItems [Line Items]
Foreign exchange risk, baseline		R$ 75,665
Foreign exchange risk, projected scenario, probable	R$ (183)
Foreign exchange risk, projected scenario 1	(19,053)
Foreign exchange risk, projected scenario 2	(37,924)
Financial assets | Collaterals and escrow accounts - STN
DisclosureOfForeignExchangeRiskLineItems [Line Items]
Foreign exchange risk, baseline		75,665
Foreign exchange risk, projected scenario, probable	(183)
Foreign exchange risk, projected scenario 1	(19,053)
Foreign exchange risk, projected scenario 2	(37,924)
Financial liabilities
DisclosureOfForeignExchangeRiskLineItems [Line Items]
Foreign exchange risk, baseline		(332,032)
Foreign exchange risk, projected scenario, probable	803
Foreign exchange risk, projected scenario 1	(82,005)
Foreign exchange risk, projected scenario 2	(164,812)
Financial liabilities | Loans and financing STN
DisclosureOfForeignExchangeRiskLineItems [Line Items]
Foreign exchange risk, baseline		(89,270)
Foreign exchange risk, projected scenario, probable	216
Foreign exchange risk, projected scenario 1	(22,048)
Foreign exchange risk, projected scenario 2	(44,311)
Financial liabilities | Eletrobras (Itaipu)
DisclosureOfForeignExchangeRiskLineItems [Line Items]
Foreign exchange risk, baseline		(215,761)
Foreign exchange risk, projected scenario, probable	522
Foreign exchange risk, projected scenario 1	(53,288)
Foreign exchange risk, projected scenario 2	(107,098)
Financial liabilities | Acquisition of gas
DisclosureOfForeignExchangeRiskLineItems [Line Items]
Foreign exchange risk, baseline		R$ (27,001)
Foreign exchange risk, projected scenario, probable	65
Foreign exchange risk, projected scenario 1	(6,669)
Foreign exchange risk, projected scenario 2	R$ (13,403)

XML

36. Financial Instruments (Details 4) - BRL (R$) R$ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financial assets
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		R$ 6,886,182
Interest rate risk and monetary variation, projected scenario, probable	R$ 280,219
Interest rate risk and monetary variation, projected scenario 1	210,158
Interest rate risk and monetary variation, projected scenario 2	140,123
Financial assets | Bonds and securities
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		219,663
Interest rate risk and monetary variation, projected scenario, probable	14,827
Interest rate risk and monetary variation, projected scenario 1	11,115
Interest rate risk and monetary variation, projected scenario 2	7,424
Financial assets | Collaterals and escrow accounts
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		59,372
Interest rate risk and monetary variation, projected scenario, probable	4,008
Interest rate risk and monetary variation, projected scenario 1	3,005
Interest rate risk and monetary variation, projected scenario 2	2,006
Financial assets | CRC transferred to the State Government of Paraná
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		1,516,362
Interest rate risk and monetary variation, projected scenario, probable	68,236
Interest rate risk and monetary variation, projected scenario 1	51,177
Interest rate risk and monetary variation, projected scenario 2	34,118
Financial assets | Sectorial financial assets
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		343,218
Interest rate risk and monetary variation, projected scenario, probable	23,167
Interest rate risk and monetary variation, projected scenario 1	17,375
Interest rate risk and monetary variation, projected scenario 2	11,584
Financial assets | Accounts receivable related to the concession
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		4,510,122
Interest rate risk and monetary variation, projected scenario, probable	169,981
Interest rate risk and monetary variation, projected scenario 1	127,486
Interest rate risk and monetary variation, projected scenario 2	84,991
Financial assets | Accounts receivable related to the concession compensation
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		68,859
Interest rate risk and monetary variation, projected scenario, probable	0
Interest rate risk and monetary variation, projected scenario 1	0
Interest rate risk and monetary variation, projected scenario 2	0
Financial assets | State of Paraná - Government Programs
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		130,417
Interest rate risk and monetary variation, projected scenario, probable	0
Interest rate risk and monetary variation, projected scenario 1	0
Interest rate risk and monetary variation, projected scenario 2	0
Financial assets | Mutual Related Parties
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		38,169
Interest rate risk and monetary variation, projected scenario, probable	0
Interest rate risk and monetary variation, projected scenario 1	0
Interest rate risk and monetary variation, projected scenario 2	0
Financial liabilities
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		(11,335,278)
Interest rate risk and monetary variation, projected scenario, probable	(712,389)
Interest rate risk and monetary variation, projected scenario 1	(890,485)
Interest rate risk and monetary variation, projected scenario 2	(1,068,580)
Financial liabilities | Loans and financing Banco do Brasil
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		(1,165,123)
Interest rate risk and monetary variation, projected scenario, probable	(78,646)
Interest rate risk and monetary variation, projected scenario 1	(98,307)
Interest rate risk and monetary variation, projected scenario 2	(117,969)
Financial liabilities | Loans and financing BNDES
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		(1,510,327)
Interest rate risk and monetary variation, projected scenario, probable	(101,947)
Interest rate risk and monetary variation, projected scenario 1	(127,434)
Interest rate risk and monetary variation, projected scenario 2	(152,921)
Financial liabilities | Loans and financing Promissory notes
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		(529,919)
Interest rate risk and monetary variation, projected scenario, probable	(35,770)
Interest rate risk and monetary variation, projected scenario 1	(44,712)
Interest rate risk and monetary variation, projected scenario 2	(53,654)
Financial liabilities | Loans and financing Banco do Brasil - Distribution of Funds from BNDES
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		(118,373)
Interest rate risk and monetary variation, projected scenario, probable	(7,990)
Interest rate risk and monetary variation, projected scenario 1	(9,988)
Interest rate risk and monetary variation, projected scenario 2	(11,985)
Financial liabilities | Loans and financing Caixa Econômica Federal
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		(498)
Interest rate risk and monetary variation, projected scenario, probable	(34)
Interest rate risk and monetary variation, projected scenario 1	(42)
Interest rate risk and monetary variation, projected scenario 2	(50)
Financial liabilities | Other
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		(345,995)
Interest rate risk and monetary variation, projected scenario, probable	0
Interest rate risk and monetary variation, projected scenario 1	0
Interest rate risk and monetary variation, projected scenario 2	0
Financial liabilities | Debentures
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		(5,358,247)
Interest rate risk and monetary variation, projected scenario, probable	(361,682)
Interest rate risk and monetary variation, projected scenario 1	(452,102)
Interest rate risk and monetary variation, projected scenario 2	(542,523)
Financial liabilities | Debentures
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		(545,967)
Interest rate risk and monetary variation, projected scenario, probable	(21,511)
Interest rate risk and monetary variation, projected scenario 1	(26,889)
Interest rate risk and monetary variation, projected scenario 2	(32,267)
Financial liabilities | Debentures
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		(166,764)
Interest rate risk and monetary variation, projected scenario, probable	(11,257)
Interest rate risk and monetary variation, projected scenario 1	(14,071)
Interest rate risk and monetary variation, projected scenario 2	(16,885)
Financial liabilities | Suppliers - renegotiation of gas
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		(73,076)
Interest rate risk and monetary variation, projected scenario, probable	(3,332)
Interest rate risk and monetary variation, projected scenario 1	(4,165)
Interest rate risk and monetary variation, projected scenario 2	(4,998)
Financial liabilities | Sectorial financial liabilities
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		(283,519)
Interest rate risk and monetary variation, projected scenario, probable	(19,138)
Interest rate risk and monetary variation, projected scenario 1	(23,922)
Interest rate risk and monetary variation, projected scenario 2	(28,706)
Financial liabilities | Ordinary financing of taxes with the federal tax authorities
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		(148,845)
Interest rate risk and monetary variation, projected scenario, probable	(10,079)
Interest rate risk and monetary variation, projected scenario 1	(12,599)
Interest rate risk and monetary variation, projected scenario 2	(15,118)
Financial liabilities | Pert
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		(533,671)
Interest rate risk and monetary variation, projected scenario, probable	(35,991)
Interest rate risk and monetary variation, projected scenario 1	(44,989)
Interest rate risk and monetary variation, projected scenario 2	(53,986)
Financial liabilities | Payable related to concession
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		(507,560)
Interest rate risk and monetary variation, projected scenario, probable	(23,145)
Interest rate risk and monetary variation, projected scenario 1	(28,931)
Interest rate risk and monetary variation, projected scenario 2	(34,717)
Financial liabilities | Payable related to concession
DisclosureOfInterestRateRiskAndMonetaryVariationLineItems [Line Items]
Interest rate risk and monetary variation, baseline		R$ (47,394)
Interest rate risk and monetary variation, projected scenario, probable	(1,867)
Interest rate risk and monetary variation, projected scenario 1	(2,334)
Interest rate risk and monetary variation, projected scenario 2	R$ (2,801)

XML

36. Financial Instruments (Details 5)	12 Months Ended
	Dec. 31, 2017
HPP Gov. Bento Munhoz da Rocha Neto (Foz do Areia)
DisclosureOfDateOfManifestationLineItems [Line Items]
Deadline for manifestation	Sep. 17, 2018
HPP Apucaraninha
DisclosureOfDateOfManifestationLineItems [Line Items]
Deadline for manifestation	Oct. 12, 2020
HPP Chaminé
DisclosureOfDateOfManifestationLineItems [Line Items]
Deadline for manifestation	Aug. 16, 2021
HPP Guaricana
DisclosureOfDateOfManifestationLineItems [Line Items]
Deadline for manifestation	Aug. 16, 2021

XML

36. Financial Instruments (Details 6)		12 Months Ended
		Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017	Dec. 31, 2016
Financial Instruments Details 6
Economic and Financial Management		{Net Debt / [EBITDA (-) QRR]} less than or equal to 1 / (1.11 * SELIC)	[1],[2]	{Net Debt / [EBITDA (-) QRR]} less than or equal to 1 / (0.8 * SELIC)	[1],[2]	EBITDA (-) QRR greater than or equal to 0	[1]	EBITDA greater than or equal to 0
Quality (limit established) DECi	[3],[4]	9.83		10.12		11.23		12.54	13.61
Quality (limit established) FECi	[3],[4]	7.24		7.74		8.24		8.74	9.24
Quality (performed) DECi	[5]	0.00		0.00		0.00		10.41	10.80
Quality (performed) FECi	[5]	0.00		0.00		0.00		6.79	7.14

[1] QRR: Regulatory Reintegration Quota or Regulatory Depreciation Expense. This is the value defined in the most recent Periodical Tariff Review (RTP), plus the General Market Price Index (IGP-M) between the month preceding the RTP and the month preceding the twelve-month period of the economic and financial sustainability measurement.

[2] Selic: limited to 12.87% p.y.

[3] According to Aneel's Technical Note No. 0335/2015.

[4] DECi - Equivalent Time of Interruption Caused by Internal Source per Consumer Unit; and FECi - Equivalent Frequency of Interruption Caused by Internal Source per Consumer Unit.

[5] The DECi and FECi indicators are calculated by ANEEL and the performed data were not officially released for the year 2017.

XML

36. Financial Instruments (Details 7) - BRL (R$) R$ / shares in Units, R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Financial Instruments Details 7
Loans and financing	R$ 3,759,505	R$ 4,046,293	R$ 4,077,060
Debentures	6,070,978	4,790,809	3,683,928
Ordinary financing of taxes with the federal tax authorities	0	0	193,739
Endorsment and securities	0	1,373,064	1,282,290
Less: Cash and cash equivalents	(1,040,075)	(982,073)	(1,480,727)	R$ (740,131)
Less: Bonds and securities (current)	1,341	136,649	294,514
Collaterals and escrow accounts	0	0	2,000
Less: Bonds and securities - held for sale and held for trading (noncurrent)	112,604	188,461	43,138
Less: Collaterals and escrow accounts STN	75,665	73,074	86,137
Adjusted net debt	8,600,798	8,829,909	7,334,501
Net income	1,118,255	874,472	1,161,565
Equity in earnings of investees	(101,739)	0	(87,590)
Deferred IRPJ and CSLL	(105,257)	(69,632)	(165,794)
Provision for IRPJ and CSLL	379,943	589,322	698,023
Financial expenses (income), net	748,440	(594,656)	(427,702)
Depreciation and amortization	731,599	708,296	676,472
Adjusted ebitda	R$ 2,771,241	R$ 2,697,114	R$ 2,710,378
Adjusted net debt / Ebitda	R$ 3.10	R$ 3.27	R$ 2.71

XML

36. Financial Instruments (Details 8) - BRL (R$) R$ / shares in Units, R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Financial Instruments Details 8
Loans and financing	R$ 3,759,505	R$ 4,046,293	R$ 4,077,060
Debentures	6,070,978	4,790,809	3,683,928
Less: Cash and cash equivalents	1,040,075	982,073	1,480,727	R$ 740,131
Less: Bonds and securities	(1,341)	(136,649)	(294,514)
Net debt	8,789,067	7,718,380	5,985,747
Equity	R$ 15,510,503	R$ 14,978,142	R$ 14,480,492	R$ 13,682,780
Equity indebtedness	R$ .57	R$ .52	R$ .41

XML

37. Related Party Transactions (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of transactions between related parties [line items]
Assets	R$ 33,162,377	R$ 30,288,900	R$ 28,843,671
Liabilities		30,288,900	28,843,671
Net operating revenues	14,024,573	13,101,753	14,945,844
Cost/Expense	10,665,890	10,234,115	11,799,316
Controlling shareholder | State of Paraná | Dividends payable
Disclosure of transactions between related parties [line items]
Assets	0	0
Liabilities	85,710	83,786
Net operating revenues	0	0	0
Cost/Expense	0	0	0
Controlling shareholder | State of Paraná | CRC Transfer
Disclosure of transactions between related parties [line items]
Assets	1,516,362	1,522,735
Liabilities	0	0
Net operating revenues	90,712	188,918	217,722
Cost/Expense	0	0	0
Controlling shareholder | State of Paraná | "Luz Fraterna" Program
Disclosure of transactions between related parties [line items]
Assets	168,405	167,674
Liabilities	0	0
Net operating revenues	0	0	0
Cost/Expense	0	0	0
Controlling shareholder | State of Paraná | 2014 World Cup construction work
Disclosure of transactions between related parties [line items]
Assets	14,266	14,266
Liabilities	0	0
Net operating revenues	0	0	0
Cost/Expense	0	0	0
Controlling shareholder | State of Paraná | Morar Bem Paraná Program
Disclosure of transactions between related parties [line items]
Assets	261	24,985
Liabilities	0	0
Net operating revenues	1,165	5,502	19,482
Cost/Expense	0	0	0
Controlling shareholder | State of Paraná | Remuneration and employ social security charges assigned
Disclosure of transactions between related parties [line items]
Assets	56	302
Liabilities	0	0
Net operating revenues	0	0	0
Cost/Expense	0	0	0
Controlling shareholder | State of Paraná | Telecommunication services
Disclosure of transactions between related parties [line items]
Assets	28,750	48,794
Liabilities	0	0
Net operating revenues	40,396	29,763	29,456
Cost/Expense	0	0	0
Controlling shareholder | State of Paraná | Sistema Meteorológico do Paraná - Simepar
Disclosure of transactions between related parties [line items]
Assets	0	0
Liabilities	0	164
Net operating revenues	0	0	0
Cost/Expense	(1,752)	(1,799)	0
Entities with significant influence | BNDES and BNDESPAR | Dividends payable
Disclosure of transactions between related parties [line items]
Assets	0	0
Liabilities	59,366	57,218
Net operating revenues	0	0	0
Cost/Expense	0	0	0
Entities with significant influence | BNDES and BNDESPAR | Financing
Disclosure of transactions between related parties [line items]
Assets	0	0
Liabilities	1,576,660	1,692,775
Net operating revenues	0	0	0
Cost/Expense	(140,537)	(149,794)	(120,982)
Entities with significant influence | BNDES and BNDESPAR | Debentures - Compagas
Disclosure of transactions between related parties [line items]
Assets	0	0
Liabilities	42,675	61,786
Net operating revenues	0	0	0
Cost/Expense	(5,242)	(2,883)	(3,347)
Entities with significant influence | BNDES and BNDESPAR | Debentures - wind farms
Disclosure of transactions between related parties [line items]
Assets	0	0
Liabilities	281,448	295,188
Net operating revenues	0	0	0
Cost/Expense	(30,540)	(14,415)	0
State of Paraná investee | Sanepar
Disclosure of transactions between related parties [line items]
Assets	24	32
Liabilities	0	0
Net operating revenues	3,699	3,319	2,886
Cost/Expense	(1,783)	(1,455)	(1,409)
State of Paraná investee | Sanepar | Dividends
Disclosure of transactions between related parties [line items]
Assets	12,095	16,817
Liabilities	0	0
Net operating revenues	0	0	0
Cost/Expense	0	0	0
Joint Ventures | Voltalia São Miguel do Gostoso - mutual
Disclosure of transactions between related parties [line items]
Assets	38,169	28,968
Liabilities	0	0
Net operating revenues	3,513	3,509	3,260
Cost/Expense	0	0	0
Joint Ventures | Voltalia São Miguel do Gostoso - mutual | Dividends
Disclosure of transactions between related parties [line items]
Assets	1,032	1,032
Liabilities	0	0
Net operating revenues	0	0	0
Cost/Expense	0	0	0
Joint Ventures | Costa Oeste Transmissora de Energia
Disclosure of transactions between related parties [line items]
Assets	206	72
Liabilities	59	73
Net operating revenues	1,034	848	726
Cost/Expense	(2,136)	(3,072)	(3,815)
Joint Ventures | Marumbi Transmissora de Energia
Disclosure of transactions between related parties [line items]
Assets	500	285
Liabilities	37	55
Net operating revenues	3,690	4,085	1,264
Cost/Expense	(756)	(900)	(346)
Joint Ventures | Caiuá Transmissora de Energia
Disclosure of transactions between related parties [line items]
Assets	320	308
Liabilities	271	356
Net operating revenues	3,792	2,066	914
Cost/Expense	(13,700)	(15,595)	(14,481)
Joint Ventures | Caiuá Transmissora de Energia | Dividends
Disclosure of transactions between related parties [line items]
Assets	1,991	1,991
Liabilities	0	0
Net operating revenues	0	0	0
Cost/Expense	0	0	0
Joint Ventures | Integração Maranhense Transmissora
Disclosure of transactions between related parties [line items]
Assets	0	0
Liabilities	43	76
Net operating revenues	0	0	0
Cost/Expense	(1,468)	(1,910)	(1,878)
Joint Ventures | Integração Maranhense Transmissora | Dividends
Disclosure of transactions between related parties [line items]
Assets	4,012	4,012
Liabilities	0	0
Net operating revenues	0	0	0
Cost/Expense	0	0	0
Joint Ventures | Matrinchã Transmissora de Energia
Disclosure of transactions between related parties [line items]
Assets	0	0
Liabilities	220	326
Net operating revenues	0	0	0
Cost/Expense	(6,636)	(4,043)	(444)
Joint Ventures | Matrinchã Transmissora de Energia | Dividends
Disclosure of transactions between related parties [line items]
Assets	36,840	23,213
Liabilities	0	0
Net operating revenues	0	0	0
Cost/Expense	0	0	0
Joint Ventures | Transmissora Sul Brasileira
Disclosure of transactions between related parties [line items]
Assets	0	0
Liabilities	72	149
Net operating revenues	0	0	0
Cost/Expense	(2,590)	(3,593)	(2,952)
Joint Ventures | Guaraciaba Transmissora de Energia
Disclosure of transactions between related parties [line items]
Assets	0	0
Liabilities	74	173
Net operating revenues	0	0	0
Cost/Expense	(3,202)	(966)	0
Joint Ventures | Guaraciaba Transmissora de Energia | Dividends
Disclosure of transactions between related parties [line items]
Assets	11,541	5,512
Liabilities	0	0
Net operating revenues	0	0	0
Cost/Expense	0	0	0
Joint Ventures | Paranaíba Transmissora de Energia
Disclosure of transactions between related parties [line items]
Assets	0	0
Liabilities	159	0
Net operating revenues	0	0	0
Cost/Expense	(3,642)	(283)	0
Joint Ventures | Paranaíba Transmissora de Energia | Dividends
Disclosure of transactions between related parties [line items]
Assets	7,093	3,051
Liabilities	0	0
Net operating revenues	0	0	0
Cost/Expense	0	0	0
Joint Ventures | Cantareira Transmissora de Energia | Dividends
Disclosure of transactions between related parties [line items]
Assets	2,146	1,224
Liabilities	0	0
Net operating revenues	0	0	0
Cost/Expense	0	0	0
Joint Ventures | Mata de Santa Genebra Transmissão | Dividends
Disclosure of transactions between related parties [line items]
Assets	3,264	0
Liabilities	0	0
Net operating revenues	0	0	0
Cost/Expense	0	0	0
Associates | Dona Francisca Energética S.A
Disclosure of transactions between related parties [line items]
Assets	0	0
Liabilities	1,436	1,436
Net operating revenues	0	0	0
Cost/Expense	(17,031)	(16,949)	(30,556)
Associates | Foz do Chopim Energética Ltda.
Disclosure of transactions between related parties [line items]
Assets	163	161
Liabilities	0	0
Net operating revenues	2,063	2,178	1,913
Cost/Expense	0	0	0
Associates | Sercomtel S.A. Telecomunicações
Disclosure of transactions between related parties [line items]
Assets	3,778	3,430
Liabilities	0	0
Net operating revenues	8,153	8,210	5,788
Cost/Expense	(4)	(6)	(6)
Key management staff | Fees and social security charges
Disclosure of transactions between related parties [line items]
Assets	0	0
Liabilities	0	0
Net operating revenues	0	0	0
Cost/Expense	(28,876)	(26,021)	(23,839)
Key management staff | Pension and healthcare plans
Disclosure of transactions between related parties [line items]
Assets	0	0
Liabilities	0	0
Net operating revenues	0	0	0
Cost/Expense	(1,690)	(1,403)	(2,380)
Other related parties | Fundação Copel
Disclosure of transactions between related parties [line items]
Assets	38	52
Liabilities	0	0
Net operating revenues	316	305	292
Cost/Expense	0	0	0
Other related parties | Fundação Copel | Pension and healthcare plans
Disclosure of transactions between related parties [line items]
Assets	0	0
Liabilities	866,103	769,865
Net operating revenues	0	0	0
Cost/Expense	0	0	0
Other related parties | Fundação Copel | Administrative property rental
Disclosure of transactions between related parties [line items]
Assets	0	0
Liabilities	349	340
Net operating revenues	0	0	0
Cost/Expense	(16,347)	(13,519)	(15,390)
Other related parties | Lactec
Disclosure of transactions between related parties [line items]
Assets	0	0
Liabilities	1,762	1,743
Net operating revenues	0	0	0
Cost/Expense	R$ (15,912)	R$ (12,911)	R$ (14,752)

XML

37. Related Party Transactions (Details 1) R$ in Thousands	12 Months Ended
	Dec. 31, 2017 BRL (R$)
DisclosureOfSuretiesAndGuaranteesLineItems [Line Items]
Amount endorsement/security	R$ 1,538,140
Company
DisclosureOfSuretiesAndGuaranteesLineItems [Line Items]
Company name	Caiuá Transmissora
Operation	Financing
Date issued	12.23.2013
Final maturity	02.15.2029
Amount approved	R$ 84,600
Sureties and guarantees balance	R$ 71,508
Interest	49.00%
Amount endorsement/security	R$ 35,039
Company
DisclosureOfSuretiesAndGuaranteesLineItems [Line Items]
Company name	Guaraciaba Transmissora
Operation	Financing
Date issued	09.28.2016
Final maturity	01.15.2031
Amount approved	R$ 440,000
Sureties and guarantees balance	R$ 421,433
Interest	49.00%
Amount endorsement/security	R$ 206,502
Company
DisclosureOfSuretiesAndGuaranteesLineItems [Line Items]
Company name	Integração Maranhense
Operation	Financing
Date issued	12.30.2013
Final maturity	02.15.2029
Amount approved	R$ 142,150
Sureties and guarantees balance	R$ 116,995
Interest	49.00%
Amount endorsement/security	R$ 57,328
Company
DisclosureOfSuretiesAndGuaranteesLineItems [Line Items]
Company name	Mata de Santa Genebra
Operation	Financing
Date issued	11.30.2017
Final maturity	07.15.2033
Amount approved	R$ 1,018,500
Sureties and guarantees balance	R$ 703,897
Interest	50.10%
Amount endorsement/security	R$ 352,652
Company
DisclosureOfSuretiesAndGuaranteesLineItems [Line Items]
Company name	Matrinchã Transmissora
Operation	Financing
Date issued	12.27.2013
Final maturity	05.15.2029
Amount approved	R$ 691,440
Sureties and guarantees balance	R$ 567,796
Interest	49.00%
Amount endorsement/security	R$ 278,220
Company
DisclosureOfSuretiesAndGuaranteesLineItems [Line Items]
Company name	Matrinchã Transmissora
Operation	Debentures
Date issued	05.15.2016
Final maturity	06.15.2029
Amount approved	R$ 180,000
Sureties and guarantees balance	R$ 193,088
Interest	49.00%
Amount endorsement/security	R$ 94,613
Company
DisclosureOfSuretiesAndGuaranteesLineItems [Line Items]
Company name	Paranaíba Transmissora
Operation	Financing
Date issued	10.21.2015
Final maturity	10.15.2030
Amount approved	R$ 606,241
Sureties and guarantees balance	R$ 582,452
Interest	24.50%
Amount endorsement/security	R$ 142,701
Company
DisclosureOfSuretiesAndGuaranteesLineItems [Line Items]
Company name	Paranaíba Transmissora
Operation	Debentures
Date issued	01.15.2017
Final maturity	03.15.2028
Amount approved	R$ 120,000
Sureties and guarantees balance	R$ 109,644
Interest	24.50%
Amount endorsement/security	R$ 26,863
Company
DisclosureOfSuretiesAndGuaranteesLineItems [Line Items]
Company name	Voltalia São Miguel do Gostoso Part. S.A.	[1]
Operation	Debentures
Date issued	01.15.2016
Final maturity	12.15.2028
Amount approved	R$ 57,000
Sureties and guarantees balance	R$ 53,328
Interest	49.00%
Amount endorsement/security	R$ 26,131
Company
DisclosureOfSuretiesAndGuaranteesLineItems [Line Items]
Company name	Usina de Energia Eólica Carnaúba S.A.	[1]
Operation	Financing
Date issued	08.24.2015
Final maturity	11.15.2031
Amount approved	R$ 74,000
Sureties and guarantees balance	R$ 53,975
Interest	49.00%
Amount endorsement/security	R$ 26,448
Company
DisclosureOfSuretiesAndGuaranteesLineItems [Line Items]
Company name	Usina de Energia Eólica Reduto S.A.	[1]
Operation	Financing
Date issued	08.24.2015
Final maturity	11.15.2031
Amount approved	R$ 70,000
Sureties and guarantees balance	R$ 53,969
Interest	49.00%
Amount endorsement/security	R$ 26,445
Company
DisclosureOfSuretiesAndGuaranteesLineItems [Line Items]
Company name	Usina de Energia Eólica Santo Cristo S.A.	[1]
Operation	Financing
Date issued	08.24.2015
Final maturity	11.15.2031
Amount approved	R$ 74,000
Sureties and guarantees balance	R$ 50,605
Interest	49.00%
Amount endorsement/security	R$ 24,796
Company
DisclosureOfSuretiesAndGuaranteesLineItems [Line Items]
Company name	Usina de Energia Eólica São João S.A.	[1]
Operation	Financing
Date issued	08.24.2015
Final maturity	11.15.2031
Amount approved	R$ 68,000
Sureties and guarantees balance	R$ 51,425
Interest	49.00%
Amount endorsement/security	R$ 25,198
Company
DisclosureOfSuretiesAndGuaranteesLineItems [Line Items]
Company name	Cantareira Transmissora de Energia
Operation	Financing
Date issued	12.28.2016
Final maturity	09.15.2032
Amount approved	R$ 426,834
Sureties and guarantees balance	R$ 439,192
Interest	49.00%
Amount endorsement/security	R$ 215,204

[1] Subsidiaries of Voltalia Sao Miguel do Gostoso I Participacoes S.A.

XML

37. Related Party Transactions (Details 2) R$ in Thousands	12 Months Ended
	Dec. 31, 2017 BRL (R$)
DisclosureOfPerformanceBondsLineItems [Line Items]
Amount endorsement	R$ 133,406
Performance Bond Company
DisclosureOfPerformanceBondsLineItems [Line Items]
Performance bond company name	Matrinchã Transmissora
Final maturity	Mar. 31, 2019
Amount insured	R$ 90,000
Endorsement percent, Copel GeT	49.00%
Amount endorsement	R$ 44,100
Performance Bond Company
DisclosureOfPerformanceBondsLineItems [Line Items]
Performance bond company name	Guaraciaba Transmissora
Final maturity	Apr. 30, 2019
Amount insured	R$ 47,000
Endorsement percent, Copel GeT	49.00%
Amount endorsement	R$ 23,030
Performance Bond Company
DisclosureOfPerformanceBondsLineItems [Line Items]
Performance bond company name	Paranaíba Transmissora
Final maturity	Jul. 26, 2018
Amount insured	R$ 48,000
Endorsement percent, Copel GeT	24.50%
Amount endorsement	R$ 11,760
Performance Bond Company
DisclosureOfPerformanceBondsLineItems [Line Items]
Performance bond company name	Mata de Santa Genebra
Final maturity	May 26, 2018
Amount insured	R$ 78,300
Endorsement percent, Copel GeT	50.10%
Amount endorsement	R$ 39,228
Performance Bond Company
DisclosureOfPerformanceBondsLineItems [Line Items]
Performance bond company name	Cantareira Transmissora
Final maturity	Nov. 30, 2018
Amount insured	R$ 31,200
Endorsement percent, Copel GeT	49.00%
Amount endorsement	R$ 15,288

XML

38. Commitments (Details) R$ in Thousands	Dec. 31, 2017 BRL (R$)
Energy purchase and transportation contracts
DisclosureOfCommitmentsLineItems [Line Items]
Commitments	R$ 118,588,046
Construction of transmission lines and substations
DisclosureOfCommitmentsLineItems [Line Items]
Commitments	292,601
Construction of HPP Colíder power plant
DisclosureOfCommitmentsLineItems [Line Items]
Commitments	42,653
Construction of HPP Baixo Iguaçu
DisclosureOfCommitmentsLineItems [Line Items]
Commitments	193,156
Construction of Cutia wind farm
DisclosureOfCommitmentsLineItems [Line Items]
Commitments	701,191
Telecommunications works
DisclosureOfCommitmentsLineItems [Line Items]
Commitments	131,557
Additions to intangible assets
DisclosureOfCommitmentsLineItems [Line Items]
Commitments	161,337
Gas purchase contracts
DisclosureOfCommitmentsLineItems [Line Items]
Commitments	R$ 54,670

XML

39. Insurance (Details) R$ in Thousands	12 Months Ended
	Dec. 31, 2017 BRL (R$)
Nominated Risks
Disclosure of types of insurance contracts [line items]
Term of validity	Aug. 24, 2018
Insured amount	R$ 2,172,442
Operational risks - HPP Governador Jayme Canet Junior
Disclosure of types of insurance contracts [line items]
Term of validity	Nov. 23, 2018
Insured amount	R$ 799,290
Operational risks - UEG Araucária
Disclosure of types of insurance contracts [line items]
Term of validity	May 31, 2018
Insured amount	R$ 725,286	[1]
Operational risks - Brisa Potiguar
Disclosure of types of insurance contracts [line items]
Term of validity	Jun. 27, 2018
Insured amount	R$ 720,713
Fire - Company-owned and rented facilities
Disclosure of types of insurance contracts [line items]
Term of validity	Aug. 24, 2018
Insured amount	R$ 597,716
Operational risks - São Bento
Disclosure of types of insurance contracts [line items]
Term of validity	Jun. 27, 2018
Insured amount	R$ 449,928
Legal guarantee - Office of the General Counsel to the National Treasury
Disclosure of types of insurance contracts [line items]
Term of validity	May 11, 2018
Insured amount	R$ 291,396
Multi-risk - Elejor
Disclosure of types of insurance contracts [line items]
Term of validity	Mar. 11, 2019
Insured amount	R$ 197,800
D&O Insurance
Disclosure of types of insurance contracts [line items]
Term of validity	Mar. 28, 2019
Insured amount	R$ 82,700	[1]
Aviation insurance (hull and civil liability)
Disclosure of types of insurance contracts [line items]
Term of validity	Jan. 30, 2019
Insured amount	R$ 80,197	[1]

[1] The values of the insured of operating risks - UEG Araucaria and Seguro Aeronautico have been translated from USD into BRL, with the current rate R$3.3080, as of 12.31.2017.

XML

41. Subsequent Events (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
DisclosureOfPhysicalGuaranteeLineItems [Line Items]
Physical guarantee (proportional average MW)	1.2
HPP Gov. José Richa (Salto Caxias)
DisclosureOfPhysicalGuaranteeLineItems [Line Items]
Installed power (MW)		1,240
Physical guarantee (average MW)		605.6
Ownership		100.00%
Installed power (proportional average MW)		1,240
Physical guarantee (proportional average MW)	605.6	605
HPP Gov. Ney Aminthas de Barros Braga (Segredo)
DisclosureOfPhysicalGuaranteeLineItems [Line Items]
Installed power (MW)		1,260
Physical guarantee (average MW)		578.5
Ownership		100.00%
Installed power (proportional average MW)		1,260
Physical guarantee (proportional average MW)	578.5	603
HPP Gov. Bento Munhoz da Rocha Netto (Foz do Areia)
DisclosureOfPhysicalGuaranteeLineItems [Line Items]
Installed power (MW)		1,676
Physical guarantee (average MW)		603
Ownership		100.00%
Installed power (proportional average MW)		1,676
Physical guarantee (proportional average MW)	603.3	576
HPP Dona Francisca
DisclosureOfPhysicalGuaranteeLineItems [Line Items]
Installed power (MW)		125
Physical guarantee (average MW)		76
Ownership		23.00%
Installed power (proportional average MW)		28.8
Physical guarantee (proportional average MW)	17.5	18
HPP Santa Clara e HPP Fundão
DisclosureOfPhysicalGuaranteeLineItems [Line Items]
Installed power (MW)		240.3
Physical guarantee (average MW)		133
Ownership		70.00%
Installed power (proportional average MW)		168.2
Physical guarantee (proportional average MW)	93.1	94.8

XML

42. Condensed Unconsolidated Financial Information of Companhia Paranaense de Energia – Copel (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CURRENT ASSETS
Cash and cash equivalents	R$ 1,040,075	R$ 982,073	R$ 1,480,727	R$ 740,131
Bonds and securities	1,341	136,649	294,514
Collaterals and escrow accounts	59,372	1,294	2,000
Dividends receivable	80,815	71,758	40,345
CRC transferred to the State Government of Paraná	167,109	0	111,663
Other current receivables	409,351	306,933	474,889
Income tax and social contribution	501,685	188,952	194,244
Other current recoverable taxes	198,232	67,931	70,725
Related parties	38,835	28,968	19,482
Total current assets	5,701,834	4,237,241	6,821,637
NONCURRENT ASSETS
Other temporary investments	18,727	408,297	0
CRC transferred to the State Government of Paraná	1,349,253	1,522,735	1,271,579
Judicial deposits	582,529	657,603	719,927
Income tax and social contribution	176,480	169,967	94,686
Deferred income tax and social contribution	915,492	814,355	537,562
Other noncurrent recoverable taxes	116,974	131,108	112,902
Related parties	130,156	155,141	192,803
Subtotal	8,607,626	8,313,032	4,951,792
Investments	2,570,643	2,344,512	2,232,484
Property, Plant and Equipment	9,829,450	8,934,303	8,692,682
Intangible Assets	6,452,824	6,459,812	6,145,076
Total noncurrent assets	27,460,543	26,051,659	22,022,034
TOTAL ASSETS	33,162,377	30,288,900	28,843,671
CURRENT LIABILITIES
Payroll, social charges and accruals	313,967	287,797	258,401
Suppliers	1,683,577	1,255,639	1,613,126
Income tax and social contribution payable	86,310	41,454	311,916
Other taxes due	345,487	294,994	340,948
Loans and financing	784,666	1,470,742	308,558
Debentures	1,632,062	1,131,198	924,005
Dividend payable	288,981	266,831	346,007
Post-employment benefits	53,225	47,894	43,323
Other accounts payable	121,405	264,791	135,709
Provisions for legal claims	112,000	0	0
Total current liabilities	6,109,914	5,656,036	4,789,118
NONCURRENT LIABILITIES
Other taxes due	809,576	303,146	257,273
Loans and financing	2,974,839	2,575,551	3,768,502
Debentures	4,438,916	3,659,611	2,759,923
Post-employment benefits	812,878	721,971	551,337
Other accounts payable	72,849	30,525	30,962
Provisions for legal claims	1,400,064	1,273,338	1,494,936
Total noncurrent liabilities	11,541,960	9,654,722	9,574,061
EQUITY
Share capital	7,910,000	7,910,000	6,910,000
Equity valuation adjustments	895,601	998,466	1,177,372	976,964
Legal reserve	844,398	792,716	744,784
TOTAL EQUITY	15,510,503	14,978,142	14,480,492	13,682,780
TOTAL LIABILITIES & EQUITY	33,162,377	30,288,900	28,843,671
Companhia Paranaense de Energia – Copel
CURRENT ASSETS
Cash and cash equivalents	56,833	46,096	25,653	R$ 34,862
Bonds and securities	90	149	168
Collaterals and escrow accounts	129	128	132
Dividends receivable	459,464	485,263	488,187
CRC transferred to the State Government of Paraná	167,109	0	111,663
Other current receivables	8,287	8,736	13,018
Income tax and social contribution	14,055	41,899	154,077
Other current recoverable taxes	276	197	0
Related parties	292,051	116,020	447
Total current assets	998,294	698,488	793,345
NONCURRENT ASSETS
Other temporary investments	18,727	408,297	0
CRC transferred to the State Government of Paraná	1,349,253	1,522,735	1,271,579
Judicial deposits	119,167	153,932	267,411
Income tax and social contribution	158,808	153,216	79,144
Deferred income tax and social contribution	102,236	47,462	100,919
Other noncurrent recoverable taxes	15	15	15
Related parties	219,426	220,661	297,237
Subtotal	1,967,632	2,506,318	2,016,305
Investments	14,987,607	13,965,892	14,057,384
Property, Plant and Equipment	830	630	455
Intangible Assets	1,603	3,168	3,046
Total noncurrent assets	16,957,672	16,476,008	16,077,190
TOTAL ASSETS	17,955,966	17,174,496	16,870,535
CURRENT LIABILITIES
Payroll, social charges and accruals	6,977	5,573	15,436
Related parties	3,936	0	0
Suppliers	2,096	2,225	2,602
Income tax and social contribution payable	2,467	0	0
Other taxes due	476	412	32,617
Loans and financing	322,092	453,288	61,788
Debentures	339,341	351,148	19,497
Dividend payable	267,988	256,426	310,020
Post-employment benefits	57	188	21
Other accounts payable	249	579	232
Provisions for legal claims	112,000	0	0
Total current liabilities	1,057,679	1,069,839	442,213
NONCURRENT LIABILITIES
Other taxes due	2,365	2,075	1,466
Loans and financing	664,020	562,072	969,412
Debentures	876,140	665,951	996,590
Post-employment benefits	3,995	3,517	7,795
Other accounts payable	830	0	0
Provisions for legal claims	143,095	152,944	290,520
Total noncurrent liabilities	1,690,445	1,386,559	2,265,783
EQUITY
Share capital	7,910,000	7,910,000	6,910,000
Equity valuation adjustments	895,601	998,466	1,177,372
Legal reserve	844,398	792,716	744,784
Retained earnings	5,557,843	5,016,916	5,330,383
TOTAL EQUITY	15,207,842	14,718,098	14,162,539
TOTAL LIABILITIES & EQUITY	R$ 17,955,966	R$ 17,174,496	R$ 16,870,535

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42. Condensed Unconsolidated Financial Information of Companhia Paranaense de Energia – Copel (Details 1) - BRL (R$) R$ / shares in Units, R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Operational expenses / income
General and administrative expenses	R$ (685,675)	R$ (741,145)	R$ (670,606)
Other operational income	(464,316)	(53,638)	(158,619)
Equity in earnings of investees	101,739	166,411	87,590
Total operational expenses / income	(1,217,302)	(878,820)	(1,025,032)
PROFIT BEFORE FINANCIAL RESULTS AND TAXES	2,141,381	1,988,818	2,121,496
Financial income	699,310	903,936	769,627
Financial expenses	(1,447,750)	(1,498,592)	(1,197,329)
Total financial results	(748,440)	(594,656)	(427,702)
OPERATING PROFIT	1,392,941	1,394,162	1,693,794
INCOME TAX AND SOCIAL CONTRIBUTION, Current	(379,943)	(589,322)	(698,023)
INCOME TAX AND SOCIAL CONTRIBUTION, Deferred	105,257	69,632	165,794
INCOME TAX AND SOCIAL CONTRIBUTION	(274,686)	(519,690)	(532,229)
NET INCOME	R$ 1,118,255	R$ 874,472	R$ 1,161,565
BASIC AND DILUTED NET EARNING PER SHARE ATTRIBUTED TO PARENT COMPANY SHAREHOLDERS - EXPRESSED IN BRAZILIAN REAIS
Ordinary shares	R$ 3.60754	R$ 3.12641	R$ 3.87253
Class "A" Preferred
BASIC AND DILUTED NET EARNING PER SHARE ATTRIBUTED TO PARENT COMPANY SHAREHOLDERS - EXPRESSED IN BRAZILIAN REAIS
Ordinary shares	3.96830	3.43906	4.25990
Class "B" Preferred
BASIC AND DILUTED NET EARNING PER SHARE ATTRIBUTED TO PARENT COMPANY SHAREHOLDERS - EXPRESSED IN BRAZILIAN REAIS
Ordinary shares	R$ 3.96830	R$ 3.43906	R$ 4.25979
Companhia Paranaense de Energia – Copel
Operational expenses / income
General and administrative expenses	R$ (59,601)	R$ (107,761)	R$ (123,717)
Other operational income	(68,788)	231,651	(3,586)
Equity in earnings of investees	1,291,434	839,853	1,302,435
Total operational expenses / income	1,163,045	963,743	1,175,132
PROFIT BEFORE FINANCIAL RESULTS AND TAXES	1,163,045	963,743	1,175,132
Financial income	181,312	321,056	245,347
Financial expenses	(327,855)	(334,113)	(314,101)
Total financial results	(146,543)	(13,057)	(68,754)
OPERATING PROFIT	1,016,502	950,686	1,106,378
INCOME TAX AND SOCIAL CONTRIBUTION, Current	(36,803)	4,882	(217)
INCOME TAX AND SOCIAL CONTRIBUTION, Deferred	53,927	(50,032)	3,388
INCOME TAX AND SOCIAL CONTRIBUTION	17,124	54,914	(3,171)
NET INCOME	R$ 1,033,626	R$ 895,772	R$ 1,109,549
BASIC AND DILUTED NET EARNING PER SHARE ATTRIBUTED TO PARENT COMPANY SHAREHOLDERS - EXPRESSED IN BRAZILIAN REAIS
Ordinary shares	R$ 3.6075	R$ 3.1265	R$ 3.8726
Companhia Paranaense de Energia – Copel | Class "A" Preferred
BASIC AND DILUTED NET EARNING PER SHARE ATTRIBUTED TO PARENT COMPANY SHAREHOLDERS - EXPRESSED IN BRAZILIAN REAIS
Ordinary shares	3.9683	3.4390	4.2599
Companhia Paranaense de Energia – Copel | Class "B" Preferred
BASIC AND DILUTED NET EARNING PER SHARE ATTRIBUTED TO PARENT COMPANY SHAREHOLDERS - EXPRESSED IN BRAZILIAN REAIS
Ordinary shares	R$ 3.9683	R$ 3.4390	R$ 4.2597

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42. Condensed Unconsolidated Financial Information of Companhia Paranaense de Energia – Copel (Details 2) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
StatementsOfComprehensiveIncomeLineItems [Line Items]
NET INCOME	R$ 1,118,255	R$ 874,472	R$ 1,161,565
Items that will never be reclassified to profit or loss
Gain (losses) on post employment benefits	(46,506)	(88,906)	410,330
Gain (losses) on post employment benefits - equity	0	(852)	19,660
Gain (losses) on taxes on other comprehensive income	16,827	30,174	(139,059)
Items that are or maybe reclassified to profit or loss
Adjustments related to financial assets classified as available for sale	26,138	3,612	628
Taxes on other comprehensive income	(8,888)	(1,229)	(215)
Realization - gain on financial assets, net of taxes	(18,909)	0	0
Total comprehensive income, net of taxes	(31,338)	(57,201)	291,344
TOTAL COMPREHENSIVE INCOME	1,086,917	817,271	1,452,909
Companhia Paranaense de Energia – Copel
StatementsOfComprehensiveIncomeLineItems [Line Items]
NET INCOME	1,033,626	895,772	1,109,549
Items that will never be reclassified to profit or loss
Gain (losses) on post employment benefits	18	6,460	2,050
Gain (losses) on post employment benefits - equity	(29,567)	(63,913)	289,082
Gain (losses) on taxes on other comprehensive income	(7)	(2,196)	(696)
Items that are or maybe reclassified to profit or loss
Adjustments related to financial assets classified as available for sale	11,661	3,612	412
Adjustments related to financial assets classified as available for sale - equity	9,554	0	0
Taxes on other comprehensive income	(3,965)	(1,229)	1
Realization - gain on financial assets, net of taxes	(9,355)	0	0
Realization - gain on financial assets - equity	(9,554)	0	0
Total comprehensive income, net of taxes	(31,215)	(57,266)	290,849
TOTAL COMPREHENSIVE INCOME	R$ 1,002,411	R$ 838,506	R$ 1,400,398

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42. Condensed Unconsolidated Financial Information of Companhia Paranaense de Energia – Copel (Details 3) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
StatementsOfCashFlowsLineItems [Line Items]
NET CASH GENERATED IN OPERATING ACTIVITIES	R$ 989,206	R$ 1,476,818	R$ 1,320,728
CASH FLOWS FROM INVESTMENT ACTIVITIES
Financial investments	48,512	13,664	76,883
Loans and financing granted to related parties	(5,145)	(9,422)	(29,400)
Receipt of loans and financing granted to related parties	24,985	5,112	7,805
Disposal of investments	484,608	0	0
Additions in investments	(248,243)	(505,098)	(528,629)
Capital reduction of investees	0	74,983	0
Additions to property, plant and equipment	(1,205,508)	(1,284,436)	(752,529)
Additions to intangible assets	(806,240)	(928,727)	(968,802)
NET CASH GENERATED FROM (USED IN) INVESTING ACTIVITIES	(1,581,173)	(2,511,075)	(1,951,618)
CASH FLOWS FROM FINANCING ACTIVITIES
Loans and financing obtained from third parties	800,044	93,806	1,836,190
Issue of Debentures	2,242,521	1,822,965	1,168,633
Dividends and interest on own capital paid	(506,404)	(368,956)	(307,528)
NET CASH GENERATED FROM (USED IN) FINANCING ACTIVITIES	649,969	535,603	1,371,486
TOTAL EFFECTS ON CASH AND CASH EQUIVALENTS	58,002	(498,654)	740,596
Cash and cash equivalents at the beginning of the period	982,073	1,480,727	740,131
Cash and cash equivalents at the end of the period	1,040,075	982,073	1,480,727
CHANGE IN CASH AND CASH EQUIVALENTS	58,002	(498,654)	740,596
Companhia Paranaense de Energia – Copel
StatementsOfCashFlowsLineItems [Line Items]
NET CASH GENERATED IN OPERATING ACTIVITIES	440,406	1,905,189	1,455,819
CASH FLOWS FROM INVESTMENT ACTIVITIES
Financial investments	24	23	(148)
Loans and financing granted to related parties	(251,856)	(87,272)	(36,800)
Receipt of loans and financing granted to related parties	124,122	5,112	15,359
Disposal of investments	397,572	0	0
Additions in investments	(574,347)	(1,489,563)	(1,235,576)
Capital reduction of investees	170,000	0	0
Additions to property, plant and equipment	(282)	(224)	(134)
Additions to intangible assets	(499)	(122)	(292)
NET CASH GENERATED FROM (USED IN) INVESTING ACTIVITIES	(135,266)	(1,572,046)	(1,257,591)
CASH FLOWS FROM FINANCING ACTIVITIES
Loans and financing obtained from third parties	77,000	0	640,005
Issue of Debentures	520,000	0	0
Amortization of principal - loans and financing	(83,000)	(6,000)	(606,000)
Amortization of principal - debentures	(333,300)	0	0
Dividends and interest on own capital paid	(475,103)	(306,700)	(241,442)
NET CASH GENERATED FROM (USED IN) FINANCING ACTIVITIES	(294,403)	(312,700)	(207,437)
TOTAL EFFECTS ON CASH AND CASH EQUIVALENTS	10,737	20,443	(9,209)
Cash and cash equivalents at the beginning of the period	46,096	25,653	34,862
Cash and cash equivalents at the end of the period	56,833	46,096	25,653
CHANGE IN CASH AND CASH EQUIVALENTS	R$ 10,737	R$ 20,443	R$ (9,209)

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42. Condensed Unconsolidated Financial Information of Companhia Paranaense de Energia – Copel (Details 4) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
STATEMENTS OF FINANCIAL POSITION
Assets	R$ 33,162,377	R$ 30,288,900	R$ 28,843,671
Noncurrent assets	27,460,543	26,051,659	22,022,034
Investments	2,570,643	2,344,512	2,232,484
Liabilities		30,288,900	28,843,671
Equity	15,510,503	14,978,142	14,480,492	R$ 13,682,780
Attributable to controlling shareholder's	15,207,842	14,718,098	14,162,539
Profit retention reserve	5,557,843	5,016,916	5,330,383
STATEMENTS OF INCOME
Operational expenses / income	(1,217,302)	(878,820)	(1,025,032)
Equity in earnings of investees	101,739	166,411	87,590
Profit before financial results and taxes	2,141,381	1,988,818	2,121,496
Financial results	(748,440)	(594,656)	(427,702)
OPERATING PROFIT	1,392,941	1,394,162	1,693,794
Income tax and social contribution	274,686	519,690	532,229
Net income	1,118,255	874,472	1,161,565
STATEMENTS OF COMPREHENSIVE INCOME
Total comprehensive income, net of taxes	(31,338)	(57,201)	291,344
Comprehensive income	1,086,917	817,271	1,452,909
Companhia Paranaense de Energia – Copel
STATEMENTS OF FINANCIAL POSITION
Assets	17,955,966	17,174,496	16,870,535
Noncurrent assets	16,957,672	16,476,008	16,077,190
Investments	14,987,607	13,965,892	14,057,384
Liabilities		17,174,496	16,870,535
Equity	15,207,842	14,718,098	14,162,539
Attributable to controlling shareholder's		14,718,098	14,162,539
Profit retention reserve		5,016,916	5,330,383
STATEMENTS OF INCOME
Operational expenses / income	1,163,045	963,743	1,175,132
Equity in earnings of investees	1,291,434	839,853	1,302,435
Profit before financial results and taxes	1,163,045	963,743	1,175,132
Financial results	(146,543)	(13,057)	(68,754)
OPERATING PROFIT	1,016,502	950,686	1,106,378
Income tax and social contribution	(17,124)	(54,914)	3,171
Net income	1,033,626	895,772	1,109,549
STATEMENTS OF COMPREHENSIVE INCOME
Total comprehensive income, net of taxes	(31,215)	(57,266)	290,849
Comprehensive income	R$ 1,002,411	838,506	1,400,398
Companhia Paranaense de Energia – Copel | As previously reported
STATEMENTS OF FINANCIAL POSITION
Assets		17,320,563	16,953,724
Noncurrent assets		16,622,075	16,160,379
Investments		14,111,959	14,140,573
Liabilities		17,320,563	16,953,724
Equity		14,864,165	14,245,728
Attributable to controlling shareholder's		14,864,165	14,245,728
Profit retention reserve		5,162,983	5,413,572
STATEMENTS OF INCOME
Operational expenses / income		1,026,621	1,258,321
Equity in earnings of investees		902,731	1,385,624
Profit before financial results and taxes		1,026,621	1,258,321
Financial results		(13,057)	(68,754)
OPERATING PROFIT		1,013,564	1,189,567
Income tax and social contribution		(54,914)
Net income		958,650	1,192,738
STATEMENTS OF COMPREHENSIVE INCOME
Total comprehensive income, net of taxes		(57,266)	290,849
Comprehensive income		901,384	1,483,587
Companhia Paranaense de Energia – Copel | Adjustments
STATEMENTS OF FINANCIAL POSITION
Assets		(146,067)	(83,189)
Noncurrent assets		(146,067)	(83,189)
Investments		(146,067)	(83,189)
Liabilities		(146,067)	(83,189)
Equity		(146,067)	(83,189)
Attributable to controlling shareholder's		(146,067)	(83,189)
Profit retention reserve		(146,067)	(83,189)
STATEMENTS OF INCOME
Operational expenses / income		(62,878)	(83,189)
Equity in earnings of investees		(62,878)	(83,189)
Profit before financial results and taxes		(62,878)	(83,189)
Financial results		0	0
OPERATING PROFIT		(62,878)	(83,189)
Income tax and social contribution		0
Net income		(62,878)	(83,189)
STATEMENTS OF COMPREHENSIVE INCOME
Total comprehensive income, net of taxes		0	0
Comprehensive income		R$ (62,878)	R$ (83,189)

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42. Condensed Unconsolidated Financial Information of Companhia Paranaense de Energia – Copel (Details 5) - Companhia Paranaense de Energia – Copel - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016
DisclosureOfRelatedPartyBalancesLineItems [Line Items]
Noncurrent assets	R$ 511,477	R$ 336,681
Estado do Paraná
DisclosureOfRelatedPartyBalancesLineItems [Line Items]
Noncurrent assets	130,156	130,156
Copel Distribuição
DisclosureOfRelatedPartyBalancesLineItems [Line Items]
Noncurrent assets	89,296	90,640
Copel Telecomunicações
DisclosureOfRelatedPartyBalancesLineItems [Line Items]
Noncurrent assets	5,189	85,421
Eólicas
DisclosureOfRelatedPartyBalancesLineItems [Line Items]
Noncurrent assets	221,327	0
Structure sharing
DisclosureOfRelatedPartyBalancesLineItems [Line Items]
Noncurrent assets	27,273	1,496
Voltalia
DisclosureOfRelatedPartyBalancesLineItems [Line Items]
Noncurrent assets	38,169	28,968
Structure sharing
DisclosureOfRelatedPartyBalancesLineItems [Line Items]
Noncurrent assets	R$ 67	R$ 0

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42. Condensed Unconsolidated Financial Information of Companhia Paranaense de Energia – Copel (Details 6) - Companhia Paranaense de Energia – Copel - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of subsidiaries [line items]
Investments	R$ 14,856,425	R$ 13,829,965	R$ 13,594,931
Copel Geração e Transmissão
Disclosure of subsidiaries [line items]
Investments	8,409,370	7,966,750	6,843,029
Copel Distribuição
Disclosure of subsidiaries [line items]
Investments	5,452,703	4,805,981	5,603,673
Copel Telecomunicações
Disclosure of subsidiaries [line items]
Investments	483,195	446,155	508,874
Copel Energia
Disclosure of subsidiaries [line items]
Investments	133,511	269,870	252,074
Compagas
Disclosure of subsidiaries [line items]
Investments	202,857	152,811	150,851
UEG Araucária
Disclosure of subsidiaries [line items]
Investments	89,240	89,314	151,471
Other investments
Disclosure of subsidiaries [line items]
Investments	R$ 85,549	R$ 99,084	R$ 84,959

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42. Condensed Unconsolidated Financial Information of Companhia Paranaense de Energia – Copel (Details 7) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfDividendsReceivablesLineItems [Line Items]
Dividends receivable	R$ 80,815	R$ 71,758	R$ 40,345
Companhia Paranaense de Energia – Copel
DisclosureOfDividendsReceivablesLineItems [Line Items]
Dividends receivable	459,464	485,263	R$ 488,187
Companhia Paranaense de Energia – Copel | Sanepar
DisclosureOfDividendsReceivablesLineItems [Line Items]
Dividends receivable	10,087	20,275
Companhia Paranaense de Energia – Copel | Other investments
DisclosureOfDividendsReceivablesLineItems [Line Items]
Dividends receivable	804	729
Companhia Paranaense de Energia – Copel | Voltália
DisclosureOfDividendsReceivablesLineItems [Line Items]
Dividends receivable	1,032	1,032
Companhia Paranaense de Energia – Copel | Copel Geração e Transmissão
DisclosureOfDividendsReceivablesLineItems [Line Items]
Dividends receivable	297,500	261,686
Companhia Paranaense de Energia – Copel | Copel Distribuição
DisclosureOfDividendsReceivablesLineItems [Line Items]
Dividends receivable	98,967	149,500
Companhia Paranaense de Energia – Copel | Copel Telecomunicações
DisclosureOfDividendsReceivablesLineItems [Line Items]
Dividends receivable	15,405	28,910
Companhia Paranaense de Energia – Copel | Copel Comercialização
DisclosureOfDividendsReceivablesLineItems [Line Items]
Dividends receivable	3,717	6,763
Companhia Paranaense de Energia – Copel | Compagas
DisclosureOfDividendsReceivablesLineItems [Line Items]
Dividends receivable	7,942	600
Companhia Paranaense de Energia – Copel | Elejor
DisclosureOfDividendsReceivablesLineItems [Line Items]
Dividends receivable	16,838	8,596
Companhia Paranaense de Energia – Copel | UEG Araucária
DisclosureOfDividendsReceivablesLineItems [Line Items]
Dividends receivable	6,143	6,143
Companhia Paranaense de Energia – Copel | Nova Asa Branca I
DisclosureOfDividendsReceivablesLineItems [Line Items]
Dividends receivable	114	114
Companhia Paranaense de Energia – Copel | Nova Asa Branca II
DisclosureOfDividendsReceivablesLineItems [Line Items]
Dividends receivable	157	157
Companhia Paranaense de Energia – Copel | Nova Asa Branca III
DisclosureOfDividendsReceivablesLineItems [Line Items]
Dividends receivable	75	75
Companhia Paranaense de Energia – Copel | Nova Eurus IV
DisclosureOfDividendsReceivablesLineItems [Line Items]
Dividends receivable	48	48
Companhia Paranaense de Energia – Copel | Santa Maria
DisclosureOfDividendsReceivablesLineItems [Line Items]
Dividends receivable	186	186
Companhia Paranaense de Energia – Copel | Santa Helena
DisclosureOfDividendsReceivablesLineItems [Line Items]
Dividends receivable	214	214
Companhia Paranaense de Energia – Copel | Ventos de Santo Uriel
DisclosureOfDividendsReceivablesLineItems [Line Items]
Dividends receivable	R$ 235	R$ 235

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42. Condensed Unconsolidated Financial Information of Companhia Paranaense de Energia – Copel (Details 8) - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfReserveForRisksLineItems [Line Items]
Reserve for risks	R$ 1,512,064	R$ 1,273,338	R$ 1,494,936
Companhia Paranaense de Energia – Copel
DisclosureOfReserveForRisksLineItems [Line Items]
Reserve for risks	255,095	152,944
Companhia Paranaense de Energia – Copel | Regulatory
DisclosureOfReserveForRisksLineItems [Line Items]
Reserve for risks	15,042	15,121
Companhia Paranaense de Energia – Copel | Labor
DisclosureOfReserveForRisksLineItems [Line Items]
Reserve for risks	518	18
Companhia Paranaense de Energia – Copel | Civil
DisclosureOfReserveForRisksLineItems [Line Items]
Reserve for risks	135,422	20,578
Companhia Paranaense de Energia – Copel | Tax Claim
DisclosureOfReserveForRisksLineItems [Line Items]
Reserve for risks	R$ 104,113	R$ 117,227

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42. Condensed Unconsolidated Financial Information of Companhia Paranaense de Energia – Copel (Details 9) - Companhia Paranaense de Energia – Copel - BRL (R$) R$ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DisclosureOfRestrictedSubsidiariesNetAssetsLineItems [Line Items]
Restricted net assets	R$ 14,370,004	R$ 13,299,008	R$ 13,274,956
Copel Geração e Transmissão S.A.
DisclosureOfRestrictedSubsidiariesNetAssetsLineItems [Line Items]
Restricted net assets	8,409,370	7,966,750	6,843,029
Copel Distribuição S.A.
DisclosureOfRestrictedSubsidiariesNetAssetsLineItems [Line Items]
Restricted net assets	5,452,703	4,805,981	5,603,673
UEG Araucária Ltda.
DisclosureOfRestrictedSubsidiariesNetAssetsLineItems [Line Items]
Restricted net assets	446,204	446,576	754,254
Centrais Elétricas Rio Jordão - Elejor
DisclosureOfRestrictedSubsidiariesNetAssetsLineItems [Line Items]
Restricted net assets	R$ 61,727	R$ 79,701	R$ 74,000