6-K

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C.  20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16 OF

THE SECURITIES EXCHANGE ACT OF 1934

For the month of April 2007

COMMISSION FILE No. 1-31690

TransCanada Corporation

(Translation of Registrant’s Name into English)

450 – 1 Street S.W., Calgary, Alberta, T2P 5H1, Canada

(Address of Principal Executive Offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F

Form 20-F o Form 40-F x

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T
Rule 101(b)(1): o

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T
Rule 101(b)(7):  o

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes o No x

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The documents listed below in this Section and filed as Exhibits 13.1 to 13.3 to this Form 6-K are hereby filed with the Securities and Exchange Commission for the purpose of being and hereby are incorporated by reference into the following registration statements filed by TransCanada Corporation under the Securities Act of 1933, as amended.

Form	Registration No.
S-8	333-5916
S-8	333-8470
S-8	333-9130
F-3	33-13564
F-3	333-6132
F-10	333-140150

13.1Management’s Discussion and Analysis of Financial Condition and Results of Operations of the registrant as at and for the period ended March 31, 2007.

13.2Consolidated comparative interim unaudited financial statements of the registrant for the period ended March 31, 2007 (included in the registrant’s First Quarter 2007 Quarterly Report to Shareholders).

13.3U.S. GAAP reconciliation of the consolidated comparative interim unaudited financial statements of the registrant contained in the registrant’s First Quarter 2007 Quarterly Report to Shareholders.

II

The document listed below in this Section is furnished, not filed, as Exhibit 99.1.  The Exhibit is being furnished, not filed, and will not be incorporated by reference into any registration statement filed by TransCanada Corporation under the Securities Act of 1933, as amended.

99.1A copy of the Registrant’s news release of April 27, 2007.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

TRANSCANADA CORPORATION
By:	/s/ Gregory A. Lohnes
	Gregory A. Lohnes
	Executive Vice-President and
	Chief Financial Officer
By:	/s/ G. Glenn Menuz
	G. Glenn Menuz
	Vice-President and Controller

April 27, 2007

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EXHIBIT INDEX

13.1	Management’s Discussion and Analysis of Financial Condition and Results of Operations of the registrant as at and for the period ended March 31, 2007.
13.2	Consolidated comparative interim unaudited financial statements of the registrant for the period ended March 31, 2007 (included in the registrant’s First Quarter 2007 Quarterly Report to Shareholders).
13.3	U.S. GAAP reconciliation of the consolidated comparative interim unaudited financial statements of the registrant contained in the registrant’s First Quarter 2007 Quarterly Report to Shareholders.
31.1	Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2	Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1	Certification of Chief Executive Officer regarding Periodic Report containing Financial Statements.
32.2	Certification of Chief Financial Officer regarding Periodic Report containing Financial Statements.
99.1	A copy of the Registrant’s news release of April 27, 2007.

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EX-13.1

Exhibit 13.1

Management’s Discussion and Analysis

The Management’s Discussion and Analysis (MD&A) dated April 26, 2007 should be read in conjunction with the accompanying unaudited Consolidated Financial Statements of TransCanada Corporation (TransCanada or the Company) for the three months ended March 31, 2007.  It should also be read in conjunction with the audited Consolidated Financial Statements and notes thereto, and the MD&A contained in TransCanada’s 2006 Annual Report for the year ended December 31, 2006. Additional information relating to TransCanada, including the Company’s Annual Information Form and continuous disclosure documents, is available on SEDAR at www.sedar.com under TransCanada Corporation. Amounts are stated in Canadian dollars unless otherwise indicated.  Capitalized and abbreviated terms that are used but not otherwise defined herein are identified in the Glossary of Terms contained in TransCanada’s 2006 Annual Report.

Forward-Looking Information

This MD&A may contain certain information that is forward looking and is subject to important risks and uncertainties. The words “anticipate”, “expect”, “may”, “should”, “estimate”, “project”, “outlook”, “forecast” or other similar words are used to identify such forward-looking information. All forward-looking statements are based on TransCanada’s beliefs and assumptions based on information available at the time such statements were made. The results or events predicted in this information may differ from actual results or events. Factors which could cause actual results or events to differ materially from current expectations include, among other things, the ability of TransCanada to successfully implement its strategic initiatives and whether such strategic initiatives will yield the expected benefits, the availability and price of energy commodities, regulatory decisions, changes in environmental and other laws and regulations, competitive factors in the pipeline and energy industry sectors, construction and completion of capital projects, access to capital markets, interest and currency exchange rates, technological developments and the current economic conditions in North America. By its nature, such forward-looking information is subject to various risks and uncertainties which could cause TransCanada’s actual results and experience to differ materially from the anticipated results or other expectations expressed. For additional information on these and other factors, see the reports filed by TransCanada with Canadian securities regulators and with the U.S. Securities and Exchange Commission. Readers are cautioned not to place undue reliance on this forward-looking information, which is given as of the date it is expressed in this MD&A or otherwise, and TransCanada undertakes no obligation to update publicly or revise any forward-looking information, whether as a result of new information, future events or otherwise, except as required by law.

Non-GAAP Measures

The Company uses the measures “comparable earnings”, “comparable earnings per share”, “funds generated from operations” and “operating income” in this MD&A. These measures do not have any standardized meaning prescribed by generally accepted accounting principles (GAAP) and are therefore considered to be non-GAAP measures. These measures are unlikely to be comparable to similar measures presented by other entities. These measures have been used to provide readers with additional information on the Company’s operating performance, liquidity and its ability to generate funds to finance its operations.

Comparable earnings is comprised of net income from continuing operations adjusted for specified items that are significant and not typical of the Company’s operations. Specified items may include, but are not limited to certain income tax refunds and adjustments, gains or losses on sales of assets, legal settlements and bankruptcy settlements received from former customers. A reconciliation of comparable earnings to net income is presented in the Consolidated Results of Operation section in this MD&A. Comparable earnings per share is calculated by dividing comparable earnings by the weighted average number of shares outstanding for the period.

Funds generated from operations is comprised of net cash provided by operations before changes in operating working capital. A reconciliation of funds generated from operations to net cash provided by operations is presented in the Liquidity and Capital Resources section in this MD&A. Operating income is used in the Energy segment and is comprised of revenues less operating expenses as shown on the consolidated income statement.  Refer to the Energy section in this MD&A for a reconciliation of operating income to net earnings.

Acquisitions

ANR and Great Lakes

On February 22, 2007, TransCanada acquired American Natural Resources Company and the ANR Storage Company (together ANR) and an additional 3.55 per cent interest in Great Lakes from El Paso Corporation for approximately US$3.4 billion, subject to certain post-closing adjustments, including US$491 million of assumed long-term debt. The acquisition of ANR added approximately 17,000 kilometres (km) of natural gas transmission pipeline with a peak-day capacity of 6.8 billion cubic feet per day (Bcf/d). ANR also owns and operates natural gas storage facilities with a total capacity of approximately 230 billion cubic feet (Bcf). TransCanada began consolidating ANR and Great Lakes in the Pipelines segment subsequent to the acquisition date. The acquisition was financed with a combination of proceeds from the Company’s recent equity offering, cash on hand and funds drawn on existing and newly established loan facilities. The equity offering and debt financings are discussed in the Liquidity and Capital Resources section in this MD&A.

Great Lakes

On February 22, 2007, PipeLines LP acquired a 46.45 per cent interest in Great Lakes from El Paso Corporation for approximately US$942 million, which included US$209 million of assumed long-term debt, subject to certain post-closing adjustments. The acquisition was financed with debt from new and existing facilities, which is discussed in the Liquidity and Capital Resources section in this MD&A, and a private placement offering, discussed below.

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In February 2007, PipeLines LP completed a private placement offering of 17,356,086 common units at a price of US$34.57 per unit, of which 50 per cent were acquired by TransCanada for US$300 million.  Additionally, TransCanada invested US$12 million to maintain its general partnership ownership interest in PipeLines LP. As a result of TransCanada’s additional investments in PipeLines LP, its ownership interest in PipeLines LP increased to 32.1 per cent from 13.4 per cent. The total private placement plus TransCanada’s additional investment resulted in gross proceeds to PipeLines LP of US$612 million, which were used to partially finance its Great Lakes acquisition.

Consolidated Results of Operations

Reconciliation of Comparable Earnings to Net Income

Three months ended March 31
(unaudited)
(millions of dollars except per share amounts)	2007			2006
Pipelines
Comparable earnings	155			139
Specified item:
Bankruptcy settlement with Mirant	—			18
Net earnings	155			157
Energy	106			100
Corporate
Comparable expenses	(11		)	(12		)
Specified item:
Corporate income tax adjustments	15			—
Net earnings/(expenses)	4			(12		)
Net Income
Continuing operations (1)	265			245
Discontinued operations	—			28
Net Income	265			273
Net Income Per Share
Continuing operations(2)	$	0.52		$	0.50
Discontinued operations	—			0.06
Basic	$	0.52		$	0.56
Diluted	$	0.52		$	0.56

(1)    Comparable Earnings	250		227
Specified items (net of tax, where applicable):
Bankruptcy settlement with Mirant	—		18
Corporate income tax adjustments	15		—
Net Income from Continuing Operations	265		245
(2)    Comparable Earnings Per Share	$	0.49	$	0.46
Specified items - per share
Bankruptcy settlement with Mirant	—		0.04
Corporate income tax adjustments	0.03		—
Net Income Per Share from Continuing Operations	$	0.52	$	0.50

TransCanada’s net income for first quarter 2007 was $265 million or $0.52

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per share compared to $273 million or $0.56 per share for first quarter 2006. Net income from continuing operations (net earnings) for the same period in 2007 was $265 million, or $0.52 per share, compared to $245 million or $0.50 per share, in 2006. The 2007 net earnings were higher than 2006 by $20 million, primarily due to income from the acquisition of ANR, start-up of the Bécancour cogeneration plant and the commencement of operations of Tamazunchale. Net earnings also increased due to positive adjustments in the first quarter of 2007, including the resolution of certain income tax matters and an internal restructuring. Comparable earnings for first quarter 2007 was $250 million or $0.49 per share, compared to $227 million or $0.46 per share for the same period in 2006. Comparable earnings excluded positive income tax adjustments of $15 million in first quarter 2007. In first quarter 2006, comparable earnings excluded an $18 million ($29 million pre-tax) bankruptcy settlement with Mirant Corporation and certain of its subsidiaries (Mirant), a former shipper on the Gas Transmission Northwest System.

TransCanada’s net income for the three months ended March 31, 2006 included net income from discontinued operations of $28 million or $0.06 per share reflecting bankruptcy settlements with Mirant received in first quarter 2006 related to TransCanada’s Gas Marketing business divested in 2001.

Results from each business segment for the three months ended March 31, 2007 are discussed further in the Pipelines, Energy and Corporate sections of this MD&A.

Funds generated from operations of $582 million for the three months ended March 31, 2007 increased $65 million when compared to the same period in 2006.

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Pipelines

The Pipelines business generated net earnings of $155 million for the three months ended March 31, 2007, compared to $157 million for the same period in 2006.

Pipelines Results-at-a-Glance

Three months ended March 31
(unaudited)
(millions of dollars)	2007		2006
Wholly Owned Pipelines
Canadian Mainline	57		59
Alberta System	31		33
ANR (1)	21		—
GTN	11		32
Foothills (2)	6		7
	126		131
Other Pipelines
Great Lakes (3)	14		12
Iroquois	5		4
Portland	5		6
PipeLines LP (4)	2		1
Ventures LP	3		3
TQM	2		2
TransGas	3		3
Tamazunchale	3		—
Northern Development	(1	)	(1	)
General, administrative, support costs and other	(7	)	(4	)
	29		26
Net Earnings	155		157

(1)ANR includes results of operations since February 22, 2007.

(2)Foothills reflects the combined operations of Foothills and the BC System.

(3)Great Lakes’ results reflect TransCanada’s 53.55 per cent ownership in Great Lakes since February 22, 2007.

(4)PipeLines LP’s results include TransCanada’s effective ownership of an additional 15 per cent in Great Lakes as a result of TransCanada's 32.1 per cent interest in PipeLines LP since February 22, 2007.

Wholly Owned Pipelines

Canadian Mainline’s first quarter 2007 net earnings decreased $2 million compared to first quarter 2006. The decrease was primarily due to a lower investment base and a lower rate of return on common equity (ROE) as determined by the National Energy Board (NEB) of 8.46 per cent in 2007, compared to 8.88 per cent in 2006, on a deemed common equity ratio of 36 per cent.

The Alberta System’s net earnings for first quarter 2007 decreased $2 million compared to the same period in 2006.  The decrease was primarily due to a lower investment base and a lower ROE in 2007.  Net earnings in 2007 reflect an ROE of 8.51 per cent on a deemed common equity ratio

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of 35 per cent compared to an ROE of 8.93 per cent on a deemed common equity ratio of 35 per cent in 2006.

TransCanada completed the acquisition of ANR on February 22, 2007 and included net earnings from this date.  ANR’s revenues are primarily derived from its interstate natural gas transmission, storage, gathering and related services.

GTN’s net earnings for the three months ended March 31, 2007 decreased $21 million from the same period in 2006 primarily due to the receipt of the $18 million bankruptcy settlement ($29 million pre-tax) in first quarter 2006 with Mirant, a former shipper on the Gas Transmission Northwest System. Also contributing to the decrease are lower operating revenues in 2007 due to lower contracted long-term firm volumes and a provision taken in first quarter 2007 for non-payment of contract transportation revenues from a subsidiary of Calpine Corporation (Calpine) that filed for bankruptcy protection.

Operating Statistics

						Gas
	Canadian		Alberta		ANR	Transmission Northwest
Three months ended March 31	Mainline(1)		System(2)		(3) (4)	System(3)		Foothills System (5)
(unaudited)	2007	2006	2007	2006	2007	2007	2006	2007	2006
Average investment base ($ millions)	7,401	7,471	4,261	4,319	n/a	n/a	n/a	818	870
Delivery volumes (Bcf)
Total	881	829	1,070	1,062	172	193	171	356	345
Average per day	9.8	9.2	11.9	11.8	4.6	2.1	1.9	4.0	3.8

(1)Canadian Mainline deliveries originating at the Alberta border and in Saskatchewan for the three months ended March 31, 2007 were 576 Bcf (2006 - 584 Bcf); average per day was 6.4 Bcf (2006 - 6.5 Bcf).

(2)Field receipt volumes for the Alberta System for the three months ended March 31, 2007 were 1,005 Bcf (2006 - 1,021 Bcf); average per day was 11.2 Bcf (2006 - 11.3 Bcf).

(3)ANR and the Gas Transmission Northwest System operate under a fixed rate model approved by the United States Federal Energy Regulatory Commission (FERC) and, as a result, the systems’ current results are not dependent on average investment base.

(4)ANR includes results of operations since February 22, 2007.

(5)Foothills reflects the combined operations of Foothills and the BC System.

Other Pipelines

TransCanada’s proportionate share of net earnings from Other Pipelines was $29 million for the three months ended March 31, 2007 compared to $26 million for the same period in 2006. The increase was mainly due to earnings from the Tamazunchale pipeline, which commenced operations in December 2006, and increased earnings from Great Lakes reflecting an effective 19 per cent increase in ownership interest. These increases were partially offset by the impact of higher project development and support costs in 2007.

As at March 31, 2007, TransCanada had advanced $125 million to the Aboriginal Pipeline Group with respect to the Mackenzie Gas Pipeline Project and had capitalized $43 million related to the Keystone pipeline.

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Energy

Energy’s net earnings of $106 million in first quarter 2007 increased $6 million compared to $100 million in first quarter 2006.

Energy Results-at-a-Glance

Three months ended March 31
(unaudited)
(millions of dollars)	2007		2006
Bruce Power	29		63
Western Power Operations	73		58
Eastern Power Operations	67		49
Natural Gas Storage	30		22
General, administrative, support costs and other	(36	)	(30	)
Operating income	163		162
Financial charges	(4	)	(7	)
Interest income and other	3		2
Income taxes	(56	)	(57	)
Net Earnings	106		100

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Bruce Power

Bruce Power Results-at-a-Glance(1)

Three months ended March 31
(unaudited)	2007			2006
Bruce Power (100 per cent basis) (millions of dollars)
Revenues
Power	460			479
Other (2)	20			17
	480			496
Operating expenses
Operations and maintenance	(295		)	(220		)
Fuel	(25		)	(20		)
Supplemental rent	(43		)	(43		)
Depreciation and amortization	(36		)	(31		)
	(399		)	(314		)
Operating Income	81			182
TransCanada’s proportionate share	31			62
Adjustments	(2		)	1
TransCanada’s operating income from Bruce Power	29			63
Bruce Power — Other Information
Plant availability
Bruce A	90		%	78		%
Bruce B	78		%	95		%
Combined Bruce Power	82		%	90		%
Sales volumes (GWh) (3)
Bruce A — 100 per cent	2,910			2,520
Bruce B — 100 per cent	5,430			6,620
Combined Bruce Power — 100 per cent	8,340			9,140
TransCanada’s proportionate share	3,129			3,306
Results per MWh (4)
Bruce A revenues	$	59		$	57
Bruce B revenues	$	53		$	50
Combined Bruce Power revenues	$	55		$	52
Combined Bruce Power fuel	$	3		$	2
Combined Bruce Power operating expenses (5)	$	47		$	34
Percentage of output sold to spot market (6)	35		%	38		%

(1)All information in the table includes adjustments to eliminate the effects of inter-partnership transactions between Bruce A and Bruce B.

(2)Includes fuel cost recoveries for Bruce A of $8 million for first quarter 2007 and $6 million for first quarter 2006.

(3)Gigawatt hours.

(4)Megawatt hours.

(5)Net of fuel cost recoveries.

(6)Represents the percentage of volumes sold into the short-term power market and are subject to spot market price volatility.

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TransCanada’s operating income of $29 million from its investment in Bruce Power decreased $34 million in first quarter 2007 compared to first quarter 2006, primarily due to lower generation volumes and higher operating costs associated with additional planned outage days. The increase in Bruce Power’s operations and maintenance expense is primarily due to the significant increase in planned outage days from 86 reactor days in first quarter 2007, compared to only 30 days in first quarter 2006. In addition, higher post-employment benefit costs contributed to higher operating costs. These impacts were partially offset by higher realized prices.

TransCanada’s share of Bruce Power’s generation for first quarter 2007 decreased 177 GWh to 3,129 GWh, compared to first quarter 2006 generation of 3,306 GWh, as a result of an increase in planned maintenance outage days in first quarter 2007. Bruce Power prices achieved during first quarter 2007 (excluding other revenues) were $55 per MWh, compared to $52 per MWh in first quarter 2006. Bruce Power’s combined operating expenses (net of fuel cost recoveries) in first quarter 2007 increased to $47 per MWh from $34 per MWh in first quarter 2006 primarily due to higher outage and other operating costs combined with lower output in first quarter 2007.

Approximately 86 reactor days of planned maintenance outages as well as approximately 4 reactor days of unplanned outages occurred on the six operating units in first quarter 2007.  In first quarter 2006, Bruce Power experienced approximately 30 reactor days of planned maintenance outages and 13 reactor days of unplanned outages.  The Bruce Power units ran at a combined average availability of 82 per cent in first quarter 2007, compared to a 90 per cent average availability in first quarter 2006.

The overall plant availability percentage in 2007 is expected to be in the low 90s for the four Bruce B units and in the mid 70s for the two operating Bruce A units.  Two planned outages are scheduled for Bruce A Unit 3 in 2007, with the first outage expected to last one month in second quarter 2007 and a second outage expected to last approximately two months beginning in late third quarter 2007. A planned one month outage for Bruce A Unit 4 and a planned two and a half month maintenance outage for Bruce B Unit 6 were both completed in April 2007.

Income from Bruce B is directly impacted by the fluctuations in wholesale spot market prices for electricity.  Income from both Bruce A and Bruce B units is impacted by overall plant availability, which in turn is impacted by scheduled and unscheduled maintenance.  As a result of a contract with the Ontario Power Authority (OPA), all of the output from Bruce A in first quarter 2007 was sold at a fixed price of $58.63 per MWh (before recovery of fuel costs from the OPA) compared to $57.37 per MWh in first quarter 2006. In addition, sales from the Bruce B Units 5 to 8 were subject to a floor price of $45.99 per MWh in first quarter 2007 and $45.00 per MWh in first quarter 2006.  Both of these reference prices are adjusted annually for inflation on April 1. Effective April 1, 2007, the Bruce A price is $59.69 per MWh and the Bruce B floor price is $46.82 per MWh.  Payments received pursuant to the Bruce B floor price mechanism may be subject to a recapture payment dependent on annual spot prices over the term of the contract.  Bruce B net earnings included no amounts received under this floor mechanism to date.  To further reduce its exposure to spot market prices, Bruce B has entered into fixed price sales contracts to sell forward approximately 5,900 GWh of output for the remainder of 2007 and 5,400 GWh for 2008.

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The capital cost of Bruce A’s four-unit, seven-year restart and refurbishment project is expected to total approximately $4.25 billion with TransCanada’s share being approximately $2.125 billion. As at March 31, 2007, Bruce A had incurred $1.338 billion with respect to the restart and refurbishment project. The Bruce A restart project remains on schedule and on budget.

Western Power Operations
Western Power Operations Results-at-a-Glance

Three months ended March 31
(unaudited)
(millions of dollars)	2007		2006
Revenues
Power	286		275
Other (1)	28		64
	314		339
Commodity purchases resold
Power	(179	)	(190	)
Other (1)	(23	)	(48	)
	(202	)	(238	)
Plant operating costs and other	(34	)	(38	)
Depreciation	(5	)	(5	)
Operating income	73		58

(1) Other includes Cancarb Thermax and natural gas.

Western Power Operations Sales Volumes

Three months ended March 31
(unaudited)
(GWh)	2007	2006
Supply
Generation	592	585
Purchased
Sundance A & B and Sheerness PPAs	3,253	3,391
Other purchases	449	486
	4,294	4,462
Contracted vs. Spot
Contracted (1)	3,492	3,164
Spot (2)	802	1,298
	4,294	4,462

(1)Represents volumes sold to wholesale, commercial and industrial customers under short-and long-term contracts at predetermined prices.

(2)Represents volumes sold into the short-term power market and are subject to spot market price volatility.

Western Power Operations’ operating income of $73 million in first quarter 2007 increased $15 million compared to the $58 million earned in first quarter 2006. This increase was primarily due to increased margins from higher overall realized power prices on both contracted and uncontracted volumes of power sold. Average spot market power prices in Alberta increased 12 per cent, or $6.85 per MWh, in first quarter 2007 compared to first quarter 2006. The power price increase was also the main contributor to an approximately 15 per cent increase in market heat rates in first quarter 2007 as average spot market natural gas prices remained relatively unchanged from first quarter 2006. The market heat rate is determined by dividing the average price of power per MWh by the

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average price of natural gas per gigajoule (GJ) for a given period. Western Power Operations’ revenues increased in first quarter 2007, compared to first quarter 2006, primarily due to the higher overall power sales prices realized in first quarter 2007 and slightly higher generation volumes, while commodity purchases resold decreased $11 million due to a decrease in purchased power volumes. Other revenues and commodity purchases resold decreased in first quarter 2007, compared to first quarter 2006, due to increased natural gas transactions recorded in first quarter 2006. Western Power Operations manages the sale of its supply volumes on a portfolio basis.  A portion of its supply is held for sale in the spot market for operational reasons and is dependent upon the ability to transact in forward sales markets at acceptable contract terms.  This approach to portfolio management assists in minimizing costs in situations where Western Power Operations would otherwise have to purchase electricity in the open market to fulfill its contractual sales obligations. Approximately 19 per cent of power sales volumes were sold into the spot market in first quarter 2007 compared to 29 per cent in first quarter 2006.  To reduce its exposure to spot market prices on uncontracted volumes, as at March 31, 2007, Western Power Operations had fixed price power sales contracts to sell approximately 8,000 GWh for the remainder of 2007 and 7,400 GWh for 2008.

Eastern Power Operations

Eastern Power Operations Results-at-a-Glance (1)

Three months ended March 31
(unaudited)
(millions of dollars)	2007		2006
Revenue
Power	354		161
Other (2)	83		117
	437		278
Commodity purchases resold
Power	(177	)	(101	)
Other (2)	(58	)	(96	)
	(235	)	(197	)
Plant operating costs and other	(124	)	(25	)
Depreciation	(11	)	(7	)
Operating income	67		49

(1)Eastern Power Operations includes Bécancour and Baie-des-Sables effective September 17, 2006 and November 21, 2006, respectively.

(2)Other includes natural gas.

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Eastern Power Operations Sales Volumes (1)

Three months ended March 31
(unaudited)
(GWh)	2007	2006
Supply
Generation	2,023	705
Purchased	1,526	730
	3,549	1,435
Contracted vs. Spot
Contracted (2)	3,357	1,383
Spot (3)	192	52
	3,549	1,435

(1)Eastern Power Operations includes Bécancour and Baie-des-Sables effective September 17, 2006 and November 21, 2006, respectively.

(2)Represents volumes sold to wholesale, commercial and industrial customers under short- and long-term contacts at predetermined prices.

(3)Represents volumes sold into the short-term power market and are subject to spot market price volatility.

Eastern Power Operations’ operating income of $67 million in first quarter 2007 increased $18 million compared to the $49 million earned first quarter 2006.  The increase was primarily due to incremental income earned in 2007 from the startup of both the 550 MW Bécancour cogeneration plant in September 2006 and the first of six wind farms (Baie-des-Sables) at the Cartier Wind project in November 2006.

Generation volumes in first quarter 2007 of 2,023 GWh increased 1,318 GWh compared to 705 GWh generated in first quarter 2006 primarily due to the placing into service of the Bécancour and Baie-des-Sables facilities, as well as increased dispatch of the OSP facility.

Eastern Power Operations’ revenues of $354 million increased $193 million in first quarter 2007, compared to first quarter 2006, primarily due to the placing into service of the Bécancour facility and increased sales volumes to commercial and industrial customers. Power commodity purchases resold of $177 million and purchased power volumes of 1,526 GWh were higher in first quarter 2007, compared to first quarter 2006, primarily due to the impact of increased purchases to supply sales contracts. First quarter 2007 other revenue and other commodity purchases resold of $83 million and $58 million, respectively, decreased year-over-year primarily as a result of a reduction in the quantity of natural gas being resold under the OSP natural gas sales contracts and lower gas prices. Plant operating costs and other of $124 million, which includes fuel gas consumed in generation, increased in first quarter 2007 from the prior year primarily as a result of the startup of the Bécancour facility.

In first quarter 2007, approximately  five per cent of power sales volumes were sold into the spot market compared to approximately four per cent in first quarter 2006.  Eastern Power Operations is focused on selling the majority of its power under contract to wholesale, commercial and industrial customers while managing a portfolio of power supplies sourced from its own generation and wholesale power purchases.  To reduce its exposure to spot market prices, as at March 31, 2007, Eastern Power

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Operations had entered into fixed price power sales contracts to sell approximately 10,100 GWh for the remainder of 2007 and 10,300 GWh for 2008, although certain contracted volumes are dependent on customer usage levels.

Power Plant Availability

Weighted Average Power Plant Availability (1)

Three months ended March 31
(unaudited)	2007		2006
Bruce Power	82	%	90	%
Western Power Operations	99	%	90	%
Eastern Power Operations (2)	97	%	95	%
All plants, excluding Bruce Power	97	%	94	%
All plants	91	%	91	%

(1)Plant availability represents the percentage of time in the period that the plant is available to generate power, whether actually running or not and is reduced by planned and unplannned outages.

(2)Eastern Operations includes Bécancour and Baie-des-Sables effective September 17, 2006 and November 21, 2006, respectively.

Natural Gas Storage

Natural Gas Storage operating income of $30 million in first quarter 2007 increased $8 million compared to $22 million in first quarter 2006.  The increase was primarily due to higher earnings from CrossAlta as a result of increased capacity and higher natural gas storage spreads as well as incremental income earned in 2007 from the startup of the Edson facility in December 2006.

General, Administrative and Support Costs

General, administrative and support costs of $36 million in first quarter 2007 increased $6 million compared to first quarter 2006 primarily due to higher costs associated with growing the Energy business.

As at March 31, 2007, TransCanada had capitalized $32 million related to the Broadwater liquefied natural gas (LNG) project.

Corporate

Net earnings from Corporate for the three months ended March 31, 2007 were $4 million, compared to net expenses of $12 million for the same period in 2006. The increase in earnings was primarily due to favourable income tax adjustments recorded in first quarter 2007, including a $10 million benefit on the resolution of certain income tax matters, a $5 million benefit resulting from an internal restructuring, as well as certain other tax items relating to changes in estimates and tax rate differentials. Partially offsetting these increases was an increase to financial charges as a result of financing the recent ANR and Great Lakes acquisitions.

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Liquidity and Capital Resources

Funds Generated from Operations

Three months ended March 31 (unaudited)
(millions of dollars)	2007	2006
Cash Flows
Funds generated from operations (1)	582	517
Decrease/(increase) in operating working capital	36	(2	)
Net cash provided by operations	618	515

(1) For a further discussion on funds generated from operations, refer to the Non-GAAP Measures section in this MD&A.

Net cash provided by operations increased $103 million in first quarter 2007 compared to first quarter 2006. The increase in cash was primarily due to a decrease in operating working capital. Funds generated from operations were $582 million for the three months ended March 31, 2007, compared to $517 million for the same period in 2006.  The increase was mainly due to an increase in cash generated through earnings.

TransCanada expects that its ability to generate adequate amounts of cash in the short and long term, when needed, and to maintain financial capacity and flexibility to provide for planned growth remains substantially unchanged since December 31, 2006.

Investing Activities

Acquisitions, net of cash acquired, for the three months ended March 31, 2007 were $4,265 million (2006 - nil) due to the acquisition of ANR and an additional 3.55 per cent interest in Great Lakes for approximately US$3.4 billion, including US$491 million of assumed long-term debt. Acquisitions also include PipeLines LP’s 46.45 per cent interest in Great Lakes for approximately US$942 million, including US$209 million of assumed long-term debt. These acquisitions are discussed further in the Acquisitions section of this MD&A.

For the three months ended March 31, 2007, capital expenditures totalled $306 million (2006 - $303 million) and related to the restart and refurbishment of Bruce A Units 1 and 2, the construction of new power plants and capital expenditures in Pipelines.

Financing Activities

TransCanada retired $325 million of long-term debt in the three months ended March 31, 2007 ($140 million – March 31, 2006), and issued $1.362 billion of long-term debt ($878 million – March 31, 2006). For the three months ended March 31, 2007, notes payable increased $1.065 billion, and cash and short-term investments decreased $49 million.

On March 20, 2007, TCPL filed debt shelf prospectuses in Canada and the U.S. qualifying for the issuance of $1.5 billion of medium-term notes and US$1.5 billion of debt securities, respectively.

On March 20, 2007, ANR Pipeline Company provided notice to the New York Stock Exchange of its intention to voluntarily withdraw from listing its 9.625 per cent Debentures due 2021, 7.375 per cent Debentures due 2024,

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and 7.0 per cent Debentures due 2025.  Following the delisting, which became effective April 12, 2007, ANR Pipeline Company deregistered these securities from registration with the U.S. Securities Exchange Commission (SEC).

In February 2007, through a subscription receipts offering, TransCanada issued 39,470,000 common shares at a price of $38.00 each. The offering resulted in gross proceeds to TransCanada of $1.5 billion which were used towards financing the acquisition of ANR. On March 6, 2007, under an option granted to the underwriters, TransCanada issued an additional 5,920,500 common shares at $38.00 per common share, resulting in additional gross proceeds of $225 million.

In February 2007, the Company executed an agreement for a US$2.2 billion, committed, unsecured, one-year bridge loan facility. Interest is charged at a floating rate based on the London Interbank Offered Rate (LIBOR). The Company utilized $1.5 billion and US$700 million from this facility to partially finance the ANR and Great Lakes acquisition. At March 31, 2007, the Company had an outstanding balance of US$488 million on this facility. The undrawn balance of this facility has been cancelled and is no longer available to the Company.

In February 2007, the Company, through a wholly owned subsidiary, established a US$1.0 billion committed, unsecured credit facility, consisting of a US$700 million five-year term loan and a US$300 million five-year, extendible revolving facility. Interest is charged at a floating rate based on LIBOR. The Company utilized US$1.0 billion from this facility and an additional US$100 million from an existing demand line to partially finance the ANR acquisition as well as its additional investment in PipeLines LP described previously. At March 31, 2007, the Company had an outstanding balance of US$1.0 billion on the credit facility and US$85 million on the demand line.

On February 22, 2007, PipeLines LP increased the size of its syndicated revolving credit and term loan facility in connection with its Great Lakes acquisition. The amount available under the facility increased from US$410 million to US$950 million, consisting of a US$700 million senior term loan and a US$250 million senior revolving credit facility, with US$194 million of the senior term loan available being terminated upon closing of the Great Lakes acquisition. Interest is charged at a floating rate based on LIBOR.

In January 2007, TransCanada filed a short form shelf prospectus with securities regulators in Canada and the U.S. to allow for the offering of up to $3.0 billion of common shares, preferred shares and/or subscription receipts in Canada and the U.S. until February 2009. As at March 31, 2007, the Company had issued $1.725 billion in common shares, which were used towards financing the acquisition of ANR.

Dividends

On April 26, 2007, TransCanada’s Board of Directors declared a quarterly dividend of $0.34 per share for the quarter ending June 30, 2007 on the outstanding common shares. This is the 175th consecutive quarterly dividend paid by TransCanada and its subsidiary on the common shares.  It is payable on July 31, 2007 to shareholders of record at the close of business on June 29, 2007.

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Directors also approved the issuance of common shares from treasury at a two per cent discount under TransCanada’s Dividend Reinvestment and Share Purchase Plan for the dividend payable July 31, 2007. The Company reserves the right to alter the discount or return to purchasing shares on the open market at any time.

Changes in Accounting Policy

Changes for 2007

Effective January 1, 2007, the Company adopted the new Canadian Institute of Chartered Accountants (CICA) Handbook accounting requirements for Section 1506 “Accounting Changes”, Section 1530 “Comprehensive Income”, Section 3251 “Equity”, Section 3855 “Financial Instruments – Recognition and Measurement”, Section 3861 “Financial Instruments – Disclosure and Presentation”, and Section 3865 “Hedges”. Adjustments to first quarter consolidated financial statements for 2007 have been made in accordance with the transitional provisions for these new standards.

Comprehensive Income and Equity

The Company’s financial statements include a statement of Consolidated Comprehensive Income. In addition, as required by Section 3251, the Company now presents separately in its Changes in Consolidated Shareholders’ Equity the changes for each of its components of Shareholders’ Equity.  A new component, Accumulated Other Comprehensive Income, has been added to the Company’s Shareholders’ Equity as a result of the implementation of this new standard.

Financial Instruments

All financial instruments, including derivatives, are included on the balance sheet initially at fair value. The financial assets are classified as held-for-trading, held-to-maturity, loans and receivables, or available-for-sale. Financial liabilities are classified as held-for-trading or other financial liabilities. Subsequent measurement is determined by classification.

Held-for-trading financial assets and liabilities are entered into with the intention of generating a profit and consist of swaps, options, forwards and futures.  These financial instruments are initially accounted for at their fair value and changes to fair value are recorded in income. Held-to-maturity financial assets are accounted for at their amortized cost using the effective interest method. The Company did not have any of these financial instruments at March 31, 2007. Loans and receivables are accounted for at their amortized cost using the effective interest method. The available-for-sale classification includes non-derivative financial assets that are designated as available-for-sale or are not included in the other three classifications. These instruments are initially accounted for at their fair value and changes to fair value are recorded through Other Comprehensive Income. Income earned from these assets is included in Interest Income and Other.

Other financial liabilities not classified as held-for-trading are accounted for at their amortized cost, using the effective interest method. Interest expense is included in Financial Charges and Financial Charges of Joint Ventures.

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Derivatives embedded in other financial instruments or contracts (the host instrument) are recorded as separate derivatives and are measured at fair value if the economic characteristics of the embedded derivative are not closely related to the host instrument, the terms of the embedded derivative are the same as those of a stand-alone derivative and the total contract is not held-for-trading or accounted for at fair value. Changes in fair value of the embedded derivative are included in income. All derivatives, other than those that meet the normal purchases and sales exceptions, are carried on the balance sheet at fair value. The Company used January 1, 2003 as the transition date for embedded derivatives.

Transaction costs are incremental costs that are directly attributable to the acquisition, issue or disposal of a financial instrument. Effective January 1, 2007, the Company began offsetting long-term debt transaction costs against the associated debt and began amortizing these costs using the effective interest method. Previously, these costs were amortized straight-line over the life of the debt. There was no material effect on the Company’s financial statements as a result of this change in policy. In first quarter 2007, the charge to Net Income for the amortization of transaction costs using the effective interest method was immaterial.

As part of the accounting for the Company’s regulated operations, gains or losses from the changes in the fair value of financial instruments within the regulated operations are included in regulatory assets or regulatory liabilities.

Hedges

The new standard specifies the circumstances under which hedge accounting is permissible, how hedge accounting may be performed and where the impacts should be recorded. The standard introduces three specific types of hedging relationships: fair value hedges, cash flow hedges and hedges of a net investment in self-sustaining foreign operations.

As part of its asset and liability management, the Company uses derivatives for hedging positions to reduce its exposure to credit and market risk. The Company designates certain derivatives as hedges and prepares documentation at the inception of the hedging contract. The Company performs an assessment at inception and during the term of the contract to determine if the derivative used as a hedge is effective in offsetting the risks in the values or cash flows of the hedged financial instrument. All derivatives are initially recorded at fair value and adjusted to fair value at each reporting date.

Fair value hedges primarily consist of interest rate swaps used to mitigate the effect of changes in the fair value of fixed-rate long-term financial instruments due to movements in market interest rates. Changes in the value of fair value hedges are recorded in Financial Charges and Interest Income and Other, for interest rate and foreign exchange hedges, respectively. Any gains or losses arising from the ineffectiveness are recognized immediately in income in the same financial category as the underlying transaction.

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The Company uses cash flow hedges to reduce its exposure to fluctuations in interest rates, foreign exchange and changes in commodity prices. The effective portion of changes in the value of cash flow hedges is recognized in Other Comprehensive Income. Ineffective portions and amounts excluded from effectiveness testing of hedges are included in income in the same financial category as the underlying transaction. Gains or losses from cash flow hedges that have been included in Accumulated Other Comprehensive Income are included in Net Income when the underlying transaction has occurred or becomes probable of not occurring. The maximum length of time the Company is hedging its exposure to variability in future cash flows is 10 years.

The Company hedges its foreign currency exposure of investments in self-sustaining foreign operations with certain cross-currency swaps, forward exchange contracts and options. These financial instruments are adjusted to fair value and the effective portion of gains or losses associated with these adjustments are included in Other Comprehensive Income. In addition, the Company hedges its net investment with U.S. dollar-denominated debt, which is valued at period-end foreign exchange rates. Gains or losses arising from ineffective portions of the hedge are included in income. Gains or losses from these hedges that have been included in Accumulated Other Comprehensive Income are reclassified to Net Income in the event the Company settles or otherwise reduces its investment.

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Net Effect of Accounting Policy Changes

The net effect to the Company’s financial statements at January 1, 2007 resulting from the above-mentioned changes in accounting policies is as follows.

Increases/ (decreases) (unaudited) (millions of dollars)
Other current assets	(127	)
Other assets	(203	)
Accounts payable	(29	)
Deferred amounts	(75	)
Future income taxes	(42	)
Long-term debt	(85	)
Long-term debt of joint ventures	(7	)
Accumulated other comprehensive loss	(186	)
Foreign exchange adjustment	90
Retained earnings	4

Future Accounting Changes

Section 1535 Capital Disclosures

Effective for interim and annual financial statements for fiscal years beginning on or after October 1, 2007, the new CICA Handbook Section 1535 “Capital Disclosures” requires the disclosure of qualitative and quantitative information about the Company’s objectives, policies and processes for managing capital.

Section 3862 Financial Instruments – Disclosures and Section 3863 – Financial Instruments – Presentation

Effective for interim and annual financial statements for fiscal years beginning on or after October 1, 2007, the new CICA Handbook Sections 3862 and 3863 will replace Section 3861 to prescribe the requirements for presentation and disclosure of financial instruments.

Contractual Obligations

As a result of TransCanada’s acquisition of ANR, Pipelines’ future purchase obligations, primarily consisting of operating lease and purchase obligations, increased $152 million at March 31, 2007, compared to December 31, 2006.

Other than the above-mentioned ANR commitments and future debt and interest payments on debt utilized to acquire ANR, there have been no material changes to TransCanada’s contractual obligations from December 31, 2006 to March 31, 2007, including payments due for the next five years and thereafter. For further information on these contractual obligations, refer to the MD&A in TransCanada’s 2006 Annual Report.

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Financial and Other Instruments

Interest, Foreign Exchange and Energy Risk Management

During the three-month period ended March 31, 2007, the Company had positions in the following types of derivatives:

·Forwards and future contracts — contractual agreements to buy or sell a specific financial instrument at a specified price and date in the future. The Company enters into foreign exchange and commodity forwards and futures to mitigate volatility in changes in foreign exchange rates and power and gas prices, respectively.

·Swaps — contractual agreements between two parties to exchange streams of payments over time according to specified terms. The Company enters into interest rate and cross-currency swaps to mitigate changes in interest rates and foreign exchange, respectively.

·Options — contractual agreements to convey the right, but not the obligation, for the purchaser either to buy or sell a specific amount of a financial instrument at a fixed price, either at a fixed date or at any time within a specified period. The Company enters into option agreements to mitigate changes in interest rates, foreign exchange and commodity prices.

The Company has long-term debt, interest rate swaps and interest rate options that have a fixed interest rate and, therefore, are subject to interest rate price risk. The Company has long-term debt, interest-rate swaps and interest-rate options, which have a floating interest rate and, therefore, are subject to interest rate cash flow risk.

The Company calculated the fair value of foreign exchange and interest rate derivatives using quoted market rates. The changes in fair value for interest rate and foreign exchange derivatives are included in Financial Charges and Interest Income and Other, respectively.

The Company executes power, natural gas and heat rate derivatives for overall management of its asset portfolio.  Heat rate contracts are agreements for the sale or purchase of power that are priced based on a natural gas index. The fair value of power and natural gas derivatives was calculated using estimated forward prices for the relevant period. In accordance with the Company’s accounting policy, the fair values of these derivatives are recorded as financial assets and liabilities.

At March 31, 2007, the Company had included net losses of $4 million (March 31, 2006 – net gains of $5 million) in Net Income as a result of its swaps, futures, options and contracts. At March 31, 2007, there were unrealized gains from unsettled derivatives of $52 million (December 31, 2006 – $41 million) included in Other Current Assets and $210 million (December 31, 2006 – $39 million) included in Other Assets. At March 31, 2007, unrealized losses of $116 million (December 31, 2006 – $144 million) were included in Accounts Payable and $259 million (December 31, 2006 – $158 million) included in Deferred Amounts.

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The Company hedges its net investment in self-sustaining foreign operations with U.S. dollar-denominated debt, cross-currency swaps, forward exchange contracts and options. At March 31, 2007, the Company had designated U.S. dollar-denominated debt with a carrying value of $3,333 million (US$2,891 million) and a fair value of $3,511 million (US$3,045 million) as a portion of this hedge and swaps, forwards and options with a fair value of $73 million (US$64 million) as net investment hedges.

Other Risk Management

Currency risk arises when the fair value or future cash flows of a financial instrument fluctuate due to changes in foreign exchange rates. The Company manages currency risk through the use of derivatives such as cross-currency swaps, options and forward foreign exchange contracts. Market risk is the risk that the fair value of future cash flows of financial instruments will fluctuate due to changes in market variables such as interest rates, foreign exchange and commodity prices. In order to manage market risk, the Company enters into offsetting physical positions and derivative financial instruments. Liquidity risk is the risk that an entity will encounter difficulty in meeting obligations associated with financial instruments. Additional risks faced by the Company are discussed in the MD&A in TransCanada’s 2006 Annual Report. These risks have not had a material effect on the Company’s financial results at March 31, 2007 and have been mitigated by risk management strategies.

TransCanada’s market, financial and counterparty risks remain substantially unchanged since December 31, 2006.  For further information on risks, refer to the MD&A in TransCanada’s 2006 Annual Report.

Risk and Risk Management Related to Environmental Regulations

In March 2007, the Alberta Government released its Climate Change and Emissions Management Act aimed at reducing greenhouse gas starting in July 2007.  The Alberta Government is currently seeking comments on the proposed regulations and many of the specifics have yet to be determined.  The Canadian Federal Government is expected to release similar legislation imminently. As these legislative initiatives have the potential to significantly impact the energy industry, the Company continues to assess and monitor the implications to TransCanada’s businesses.

Controls and Procedures

As of March 31, 2007, an evaluation was carried out under the supervision of, and with the participation of, management including the President and Chief Executive Officer and Chief Financial Officer, of the effectiveness of TransCanada’s disclosure controls and procedures as defined under the rules adopted by the Canadian securities regulatory authorities and by the U.S. Securities and Exchange Commission. Based on that evaluation, the President and Chief Executive Officer and Chief Financial Officer concluded that the design and operation of TransCanada’s disclosure controls and procedures were effective as at March 31, 2007.

During the recent fiscal quarter, there have been no changes in TransCanada’s internal control over financial reporting that have materially affected, or are reasonably likely to materially affect,

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TransCanada’s internal control over financial reporting. With respect to the recent acquisitions, the Company has not yet determined whether or not to apply the acquisitions exemption allowed under the Sarbanes-Oxley Act of 2002.

Significant Accounting Policies and Critical Accounting Estimates

Since determining the value of certain assets, liabilities, revenues and expenses is dependent upon future events, the preparation of the Company’s consolidated financial statements requires the use of estimates and assumptions which have been made using careful judgment.

TransCanada’s significant accounting policies and critical accounting estimates are the use of regulatory accounting for the Company’s regulated operations and the policies the Company adopts to account for derivatives and depreciation and amortization expense. Effective January 1, 2007, the Company adopted the new accounting standards for financial instruments and hedges, as discussed in the section Changes in Accounting Policies in this MD&A. For further information on the Company’s accounting policies and estimates refer to the MD&A in TransCanada’s 2006 Annual Report.

Outlook

Excluding the $15 million of income tax adjustments recorded in first quarter 2007, the Company’s outlook is relatively unchanged since the disclosure in the Company’s 2006 Annual Report.  For further information on outlook, refer to the MD&A in TransCanada’s 2006 Annual Report.

TransCanada’s issuer rating assigned by Moody’s Investors Service (Moody’s) is A3 with a stable outlook. TransCanada PipeLines Limited’s (TCPL) senior unsecured debt is rated A, with a stable outlook, by DBRS; A2, with a stable outlook, by Moody’s; and A-, with a stable outlook, by Standard & Poor’s.

Other Recent Developments

Pipelines

Wholly Owned Pipelines

Canadian Mainline

In February 2007, TransCanada reached a multi-year tolls settlement for the years 2007 to 2011 on the Canadian Mainline.

TransCanada and its stakeholders agreed that the cost of capital will reflect an ROE, as determined by the NEB’s return on equity formula, on a deemed common equity ratio of 40 per cent, an increase from 36 per cent.  The remaining capital structure will consist of senior debt following the agreed upon redemption of US$460 million Preferred Securities currently included in the Canadian Mainline’s investment base.

The settlement also establishes certain elements of the Canadian Mainline’s fixed operating, maintenance and administration (OM&A) costs for each year of the settlement. Any variance between actual OM&A costs and those agreed to in the settlement will accrue to TransCanada from

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2007 to 2009. Variances in certain elements of OM&A costs will be shared equally between TransCanada and its customers in 2010 and 2011. All other cost elements of the revenue requirement will be treated on a flow-through basis.

The performance-based incentive arrangements, similar to those agreed to in the 2006 settlement, are focused on aligning interests in achieving cost savings and increased value, thereby providing mutual benefits to both TransCanada and its customers.  TransCanada and its stakeholders have agreed to a slight decrease in the depreciation rate for the term of the settlement and to seek NEB approval to put the requirement for an updated depreciation study due in 2008 into abeyance until 2012.

Interim tolls as approved by the NEB in March 2007 will continue to be charged for transportation service on the Canadian Mainline until final tolls are approved by the NEB pursuant to this settlement. In March 2007, TransCanada applied to the NEB for approval of this settlement, and a decision is expected in second quarter 2007. Until this decision is received, TransCanada is recording its Canadian Mainline net earnings using the NEB ROE formula on a deemed common equity ratio of 36 per cent.

Alberta System

In March 2007, the Alberta Energy and Utilities Board (EUB) approved the 2007 final rates for the Alberta System as filed. The rates are effective April 1, 2007 to December 31, 2007 and reflect the 2005-2007 Revenue Requirement Settlement on the Alberta System.

Northern Border

Effective April 1, 2007, TransCanada became the operator of Northern Border. TransCanada owns 16 per cent of Northern Border through its 32.1 per cent ownership of PipeLines LP.

BC System and Foothills

In February 2007, the NEB approved the integration of the BC System into Foothills. In March 2007, the NEB approved a compliance filing confirming an April 1, 2007 effective date for the transfer and providing final 2007 tolls.

Gas Transmission Northwest System

TransCanada filed a rate case with the FERC for its Gas Transmission Northwest System. In January 2007, TransCanada received a procedural order from the FERC establishing a timeline for the System’s rate case proceeding with a hearing scheduled to commence on October 31, 2007. In April 2007, the Company initiated settlement discussions with its customers and the FERC.

Beginning January 1, 2007, GTN increased its transportation rates in accordance with the FERC’s July 31, 2006 suspension order. The additional revenue collected is subject to refund based upon the outcome of GTN’s rate case proceeding. Until final approval of rates is received from the FERC, the Company has been recording a provision for rate refund equal

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to the difference in transportation revenue based on GTN’s new rates and the rates that were in effect prior to January 1, 2007.

North Baja Pipeline Expansion

TransCanada’s North Baja Pipeline has filed an application with the FERC to expand and modify its existing system to facilitate the importation of regassified LNG from Mexico into the California and Arizona markets. The FERC has issued a preliminary determination approving all aspects of North Baja’s proposal other than those related to environmental issues, which will be the subject of a future order. TransCanada expects that the final Environmental Impact Statement will be completed and the FERC will issue its final order authorizing the project by mid year 2007.

Mackenzie Gas Pipeline Project

In March 2007, the proponents of the Mackenzie Gas Project (MGP) filed updated capital cost estimates for the project with the NEB and a Joint Review Panel (JRP).   These estimates include $3.5 billion for the gas gathering system, $7.8 billion for the pipeline and $4.9 billion for the development of the proponent’s gas fields.  Additional project update information is expected to be filed in June 2007, describing further project adjustments and refinements.

The MGP proponents continue to participate in public hearings convened by the JRP, assessing socio-economic and environmental aspects of the project. These regulatory hearings are expected to conclude in the second half of 2007, with the JRP’s report to follow.

Alaska Highway Pipeline Project

TransCanada is continuing its discussions with the Alaska North Slope producers. The Alaska State administration has introduced the Alaska Gasline Inducement Act (AGIA) as their new process for the portion of the pipeline project in Alaska. The Alaska State Legislature is currently reviewing the bill, with final disposition expected by approximately June 2007. If AGIA is passed in its current form, it is expected the State will choose a licensee for the pipeline project near the end of 2007.

Energy

Broadwater

Broadwater is a partnership between TransCanada and Shell US Gas & Power to construct an facility in the New York State waters of Long Island Sound. TransCanada anticipates that the FERC will issue a Final Environmental Impact Statement in third quarter 2007. A similar timeline is anticipated for the State of New York to render a decision on whether the Broadwater project is consistent with its coastal management policies.

Share Information

As at March 31 2007, TransCanada had 534,721,062 issued and outstanding common shares. In addition, there were 9,525,221 outstanding options to purchase common shares, of which 6,780,132 were exercisable as at March 31, 2007.

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Selected Quarterly Consolidated Financial Data(1)

(unaudited)	2007		2006								2005
(millions of dollars except per share amounts)	First		Fourth		Third		Second		First		Fourth		Third		Second
Revenues	2,249		2,091		1,850		1,685		1,894		1,771		1,494		1,449
Net Income
Continuing operations	265		269		293		244		245		350		427		200
Discontinued operations	—		—		—		—		28		—		—		—
	265		269		293		244		273		350		427		200
Share Statistics
Net income per share - Basic
Continuing operations	$	0.52	$	0.55	$	0.60	$	0.50	$	0.50	$	0.72	$	0.88	$	0.41
Discontinued operations	—		—		—		—		0.06		—		—		—
	$	0.52	$	0.55	$	0.60	$	0.50	$	0.56	$	0.72	$	0.88	$	0.41
Net income per share - Diluted
Continuing operations	$	0.52	$	0.54	$	0.60	$	0.50	$	0.50	$	0.71	$	0.87	$	0.41
Discontinued operations	—		—		—		—		0.06		—		—		—
	$	0.52	$	0.54	$	0.60	$	0.50	$	0.56	$	0.71	$	0.87	$	0.41
Dividend declared per common share	$	0.34	$	0.32	$	0.32	$	0.32	$	0.32	$	0.305	$	0.305	$	0.305

(1)The selected quarterly consolidated financial data has been prepared in accordance with Canadian GAAP. Certain comparative figures have been reclassified to conform with the current year’s presentation.

Factors Impacting Quarterly Financial Information

In Pipelines, which consists primarily of the Company’s investments in regulated pipelines and natural gas storage facilities, annual revenues and net earnings fluctuate over the long term based on regulators’ decisions and negotiated settlements with shippers.  Generally, quarter-over-quarter revenues and net earnings during any particular fiscal year remain relatively stable with fluctuations resulting from adjustments being recorded due to regulatory decisions and negotiated settlements with shippers, seasonal fluctuations in short-term throughput on U.S. pipelines and items outside of the normal course of operations.

In Energy, which consists primarily of the Company’s investments in electrical power generation plants and non-regulated natural gas storage facilities, quarter-over-quarter revenues and net earnings are affected by seasonal weather conditions, customer demand, market prices, planned and unplanned plant outages as well as items outside of the normal course of operations.

Significant items which impacted the last eight quarters’ net earnings are as follows.

·Second quarter 2005 net earnings included $21 million ($13 million related to 2004 and $8 million related to 2005) with respect to the NEB’s decision on the Canadian Mainline’s 2004 Tolls and Tariff Application (Phase II).  On April 1, 2005, TransCanada completed the acquisition of TC Hydro

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generation assets from USGen New England, Inc.  Bruce Power’s income from equity investments was lower than previous quarters due to the continuing impact of planned maintenance outages and an unplanned maintenance outage on Unit 6 relating to a transformer fire.

·In third quarter 2005, net earnings included a $193 million after-tax gain related to the sale of the Company’s ownership interest in TransCanada Power, LP.  In addition, Bruce Power’s income from equity investments increased from prior quarters due to higher realized power prices and slightly higher generation volumes.

·In fourth quarter 2005, net earnings included a $115 million after-tax gain on the sale of P.T. Paiton Energy Company. In addition, Bruce A was formed and Bruce Power’s results were proportionately consolidated, effective October 31, 2005.

·In first quarter 2006, net earnings included an $18 million after-tax bankruptcy claim settlement from a former shipper on the Gas Transmission Northwest System. In addition, Energy’s net earnings included contributions from the December 31, 2005 acquisition of the 756 MW Sheerness PPA.

·In second quarter 2006, net earnings included $33 million of future income tax benefits ($23 million in Energy and $10 million in Corporate) as a result of reductions in Canadian federal and provincial corporate income tax rates.  Pipelines earnings included a $13 million after-tax gain related to the sale of the Company’s general partner interest in Northern Border Partners, L.P.

·In third quarter 2006, net earnings included an income tax benefit of approximately $50 million on the resolution of certain income tax matters with taxation authorities and changes in estimates.

·In fourth quarter 2006, net earnings included approximately $12 million related to income tax refunds and related interest.

·In first quarter 2007, net earnings included approximately $15 million related to positive income tax adjustments. In addition, Pipelines’ net earnings included contributions from the February 22, 2007 acquisition of ANR and additional interests in Great Lakes.

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EX-13.2

Exhibit 13.2

Consolidated Income

Three months ended March 31 (unaudited)
(millions of dollars except per share amounts)	2007			2006
Revenues	2,249			1,894
Operating Expenses
Plant operating costs and other	732			537
Commodity purchases resold	576			505
Depreciation	290			257
	1,598			1,299
	651			595
Other Expenses/(Income)
Financial charges	237			202
Financial charges of joint ventures	21			21
Income from equity investments	(6		)	(18		)
Interest income and other	(25		)	(49		)
	227			156
Income from Continuing Operations before Income Taxes and Non-Controlling Interests	424			439
Income Taxes
Current	168			210
Future	(37		)	(41		)
	131			169
Non-Controlling Interests
Preferred share dividends of subsidiary	6			6
Non-controlling interest in PipeLines LP	17			13
Other	5			6
	28			25
Net Income from Continuing Operations	265			245
Net Income from Discontinued Operations	—			28
Net Income	265			273
Net Income Per Share
Continuing operations	$	0.52		$	0.50
Discontinued operations	—			0.06
Basic	$	0.52		$	0.56
Diluted	$	0.52		$	0.56
Average Shares Outstanding — Basic (millions)	508			487
Average Shares Outstanding — Diluted (millions)	511			490

See accompanying notes to the consolidated financial statements.

Consolidated Cash Flows

Three months ended March 31 (unaudited)
(millions of dollars)	2007		2006
Cash Generated From Operations
Net income	265		273
Depreciation	290		257
Income from equity investments in excess of distributions received	(6	)	(4	)
Future income taxes	(37	)	(41	)
Non-controlling interests	28		25
Funding of employee future benefits lower than/(in excess of)
expense	12		(2	)
Other	30		9
	582		517
Decrease/(increase) in operating working capital	36		(2	)
Net cash provided by operations	618		515
Investing Activities
Capital expenditures	(306	)	(303	)
Acquisitions, net of cash acquired	(4,265	)	—
Deferred amounts and other	(61	)	(9	)
Net cash used in investing activities	(4,632	)	(312	)
Financing Activities
Dividends on common shares	(156	)	(149	)
Distributions paid to non-controlling interests	(16	)	(16	)
Notes payable issued/(repaid), net	1,065		(633	)
Long-term debt issued	1,362		878
Reduction of long-term debt	(325	)	(140	)
Long-term debt of joint ventures issued	12		2
Reduction of long-term debt of joint ventures	(12	)	(6	)
Partnership units of subsidiary issued	348		—
Common shares issued	1,690		8
Net cash provided by/ (used in) financing activities	3,968		(56	)
Effect of Foreign Exchange Rate Changes on Cash
and Short-Term Investments	(3	)	2
(Decrease)/Increase in Cash and Short-Term Investments	(49	)	149
Cash and Short-Term Investments
Beginning of period	399		212
Cash and Short-Term Investments
End of period	350		361
Supplementary Cash Flow Information
Income taxes paid	87		217
Interest paid	273		199

See accompanying notes to the consolidated financial statements.

2

Consolidated Balance Sheet

(unaudited)	March 31,		December 31,
(millions of dollars)	2007		2006
ASSETS
Current Assets
Cash and short-term investments	350		399
Accounts receivable	1,135		1,004
Inventories	478		392
Other	116		297
	2,079		2,092
Long-Term Investments	76		71
Plant, Property and Equipment	24,181		21,487
Goodwill	2,878		281
Other Assets	1,888		1,978
	31,102		25,909
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current Liabilities
Notes payable	1,532		467
Accounts payable	1,570		1,500
Accrued interest	278		264
Current portion of long-term debt	494		616
Current portion of long-term debt of joint ventures	137		142
	4,011		2,989
Deferred Amounts	1,097		1,029
Future Income Taxes	1,198		876
Long-Term Debt	12,945		10,887
Long-Term Debt of Joint Ventures	864		1,136
Preferred Securities	530		536
	20,645		17,453
Non-Controlling Interests
Preferred shares of subsidiary	389		389
Non-controlling interest in PipeLines LP	634		287
Other	83		79
	1,106		755
Shareholders’ Equity
Common shares	6,484		4,794
Contributed surplus	274		273
Retained earnings	2,811		2,724
Accumulated other comprehensive loss	(218	)	(90	)
	2,593		2,634
	9,351		7,701
	31,102		25,909

See accompanying notes to the consolidated financial statements.

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Consolidated Comprehensive Income

Three months ended March 31 (unaudited)
(millions of dollars)	2007		2006
Net income	265		273
Other comprehensive loss, net of tax
Change in foreign currency translation gains and losses on investments in foreign operations (1)	(37	)	(1	)
Change in gains and losses on hedges of investments in foreign operations (2)	9		(3	)
Change in gains and losses on derivative instruments designated as cash flow hedges (3)	(1	)
Reclassification to net income of gains and losses on derivative instruments designated as cash flow hedges pertaining to prior periods (4) (5)	(3	)
Other comprehensive loss for the period	(32	)	(4	)
Comprehensive income for the period	233		269

(1) Net of tax recovery of $5 million (2006 - expense of $1 million).

(2) Net of tax recovery of $5 million (2006 - expense of $2 million).

(3) Net of tax recovery of $5 million.

(4) Net of tax of $2 million.

(5) During the next 12 months, the Company expects to reclassify to net income $86 million ($60 million after tax) of realized net losses for cash flow hedges.

See accompanying notes to the consolidated financial statements.

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Consolidated Shareholders’ Equity

Three months ended March 31 (unaudited)
(millions of dollars)	2007		2006
Common Shares
Balance at beginning of period	4,794		4,755
Proceeds from shares issued under public offering (1)	1,682		—
Proceeds from shares issued on exercise of stock options	8		8
Balance at end of period	6,484		4,763
Contributed Surplus
Balance at beginning of period	273		272
Issuance of stock options	1		—
Balance at end of period	274		272
Retained Earnings
Balance at beginning of period	2,724		2,269
Transition adjustment resulting from adopting new financial instruments accounting standards	4
Net income	265		273
Common share dividends	(182	)	(156	)
Balance at end of period	2,811		2,386
Accumulated Other Comprehensive Loss, net of income taxes
Balance at beginning of period	(90	)	(90	)
Transition adjustment resulting from adopting new financial instruments accounting standards	(96	)
Change in foreign currency translation gains and losses on investments in foreign operations	(28	)	(4	)
Change in gains and losses on derivative instruments designated as cash flow hedges	(1	)
Reclassification to net income of gains and losses on derivative instruments designated as cash flow hedges pertaining to prior periods	(3	)
Balance at end of period	(218	)	(94	)
Total Shareholders’ Equity	9,351		7,327

(1) Net of underwriting commissions and future income taxes.

See accompanying notes to the consolidated financial statements.

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Notes to Consolidated Financial Statements

(Unaudited)

1.Significant Accounting Policies

The consolidated financial statements of TransCanada Corporation (TransCanada or the Company) have been prepared in accordance with Canadian generally accepted accounting principles (GAAP). The accounting policies applied are consistent with those outlined in TransCanada’s annual audited consolidated financial statements for the year ended December 31, 2006, except for the changes noted below. These consolidated financial statements reflect all normal recurring adjustments that are, in the opinion of management, necessary to present fairly the financial position and results of operations for the respective periods. These consolidated financial statements do not include all disclosures required in the annual financial statements and should be read in conjunction with the 2006 audited consolidated financial statements included in TransCanada’s 2006 Annual Report.  Amounts are stated in Canadian dollars unless otherwise indicated. Certain comparative figures have been reclassified to conform with current period’s presentation.

In Pipelines, which consists primarily of the Company’s investments in regulated pipelines and natural gas storage facilities, annual revenues and net earnings fluctuate over the long term based on regulators’ decisions and negotiated settlements with shippers.  Generally, quarter-over-quarter revenues and net earnings during any particular fiscal year remain relatively stable with fluctuations resulting from adjustments being recorded due to regulatory decisions and negotiated settlements with shippers, seasonal fluctuations in short-term throughput on U.S. pipelines and items outside of the normal course of operations.

In Energy, which consists primarily of the Company’s investments in electrical power generation plants and non-regulated natural gas storage facilities, quarter-over-quarter revenues and net earnings are affected by seasonal weather conditions, customer demand, market prices, planned and unplanned plant outages as well as items outside of the normal course of operations.

Since a determination of the value of many assets, liabilities, revenues and expenses is dependent upon future events, the preparation of these consolidated financial statements requires the use of estimates and assumptions. In the opinion of Management, these consolidated financial statements have been properly prepared within reasonable limits of materiality and within the framework of the significant accounting policies.

2.Changes In Accounting Policies

Changes for 2007

Effective January 1, 2007, the Company adopted the new Canadian Institute of Chartered Accountants (CICA) Handbook accounting requirements for Section 3855 “Financial Instruments – Recognition and Measurement”, Section 3865 “Hedges”, Section 3861 “Financial Instruments – Disclosure and Presentation”, Section 1530 “Comprehensive Income”, Section 3251 “Equity” and Section 1506 “Accounting Changes”.   Adjustments to first quarter consolidated financial statements for 2007 have been made in accordance with the transitional provisions for these new standards.

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Financial Instruments

All financial instruments, including derivatives, are included on the balance sheet initially at fair value. The financial assets are classified as held-for-trading, held-to-maturity, loans and receivables, or available-for-sale. Financial liabilities are classified as held-for-trading or other financial liabilities. Subsequent measurement is determined by classification.

Held-for-trading financial assets and liabilities are entered into with the intention of generating a profit and consist of swaps, options, forwards and futures. These financial instruments are initially accounted for at their fair value and changes to fair value are recorded in income. Held-to-maturity financial assets are accounted for at their amortized cost using the effective interest method. The Company did not have any of these financial instruments at March 31, 2007. Loans and receivables are accounted for at their amortized cost using the effective interest method. The available-for-sale classification includes non-derivative financial assets that are designated as available-for-sale or are not included in the other three classifications. These instruments are initially accounted for at their fair value and changes to fair value are recorded through Other Comprehensive Income. Income earned from these assets is included in Interest Income and Other.

Other financial liabilities not classified as held-for-trading are accounted for at their amortized cost, using the effective interest method. Interest expense is included in Financial Charges and Financial Charges of Joint Ventures.

Derivatives embedded in other financial instruments or contracts (the host instrument) are recorded as separate derivatives and are measured at fair value if the economic characteristics of the embedded derivative are not closely related to the host instrument, the terms of the embedded derivative are the same as those of a stand-alone derivative and the total contract is not held-for-trading or accounted for fair value. Changes in fair value are included in income. All derivatives, other than those that meet the normal purchases and sales exceptions, are carried on the balance sheet at fair value. The Company used January 1, 2003 as the transition date for embedded derivatives.

Transaction costs are incremental costs that are directly attributable to the acquisition, issue or disposal of a financial instrument. Effective January 1, 2007, the Company began offsetting long-term debt transaction costs against the associated debt and began amortizing these costs using the effective interest rate method. Previously, these costs were amortized straight-line over the life of the debt. There was no material effect on the Company’s financial statements as a result of this change in policy. In first quarter 2007, the charge to Net Income for the amortization of transaction costs using the effective interest method was not material.

As part of the accounting for the Company’s regulated operations, gains or losses from the changes in the fair value of financial instruments within the regulated operations are included in regulatory assets or regulatory liabilities.

7

Hedges

The new standard specifies the circumstances under which hedge accounting is permissible, how hedge accounting may be performed and where the impacts should be recorded. The standard introduces three specific types of hedging relationships: fair value hedges, cash flow hedges and hedges of a net investment in self-sustaining foreign operations.

As part of its asset and liability management, the Company uses derivatives for hedging positions to reduce its exposure to credit and market risk. The Company designates certain derivatives as hedges and prepares documentation at the inception of the hedging contract. The Company performs an assessment at inception and during the term of the contract to determine if the derivative used as a hedge is effective in offsetting the risks in the values or cash flows of the hedged financial instrument. All derivatives are initially recorded at fair value and adjusted to fair value at each reporting date.

Fair value hedges primarily consist of interest rate swaps used to mitigate the effect of changes in the fair value of fixed-rate long-term financial instruments due to movements in market interest rates. Changes in the value of fair value hedges are recorded in Financial Charges and Interest Income and Other, for interest-rate and foreign exchange hedges, respectively. Any gains or losses arising from the ineffectiveness are recognized immediately in income in the same financial category as the underlying transaction.

The Company uses cash flow hedges to reduce its exposure to fluctuations in interest rates, foreign exchange and changes in commodity prices. The effective portion of changes in the value of cash flow hedges is recognized in Other Comprehensive Income. Ineffective portions and amounts excluded from effectiveness testing of hedges are included in income in the same financial category as the underlying transaction. Gains or losses from cash flow hedges that have been included in Accumulated Other Comprehensive Income are included in Net Income when the underlying transaction has occurred or becomes probable of not occurring. The maximum length of time the Company is hedging its exposure to variability in future cash flows is 10 years.

The Company hedges its foreign currency exposure of investments in self-sustaining foreign operations with certain cross-currency swaps, forward exchange contracts and options. These financial instruments are adjusted to fair value and the effective portion of gains or losses associated with these adjustments are included in Other Comprehensive Income. In addition, the Company hedges its net investment with certain U.S. dollar-denominated long-term debt, which is valued at period-end foreign exchange rates. Gains or losses arising from ineffective portions of the hedge are included in income. Gains or losses from these hedges that have been included in Accumulated Other Comprehensive Income are reclassified to Net Income in the event the Company settles or otherwise disposes of the investment.

Comprehensive Income and Equity

The Company’s financial statements include a statement of Consolidated Comprehensive Income. In addition, as required by Section 3251, the Company now presents separately in its Changes in Consolidated Shareholders’ Equity the changes for each of its components of Shareholders’ Equity.  A new component, Accumulated Other Comprehensive Income, has been added to the Company’s Shareholders’ Equity as a result of the implementation of this new standard.

8

Net Effect of Accounting Policy Changes

The net effect to the Company’s financial statements at January 1, 2007 resulting from the above-mentioned changes in accounting policies is as follows.

Increases/ (decreases)

(unaudited)
(millions of dollars)

Other current assets	(127	)
Other assets	(203	)
Accounts payable	(29	)
Deferred amounts	(75	)
Future income taxes	(42	)
Long-term debt	(85	)
Long-term debt of joint ventures	(7	)
Accumulated other comprehensive loss	(186	)
Foreign exchange adjustment	90
Retained earnings	4

Future Accounting Changes

Section 1535 Capital Disclosures

Effective for interim and annual financial statements for fiscal years beginning on or after October 1, 2007, the new CICA Handbook Section 1535 “Capital Disclosures” requires the disclosure of qualitative and quantitative information about the Company’s objectives, policies and processes for managing capital.

Section 3862 Financial Instruments – Disclosures and Section 3863 – Financial Instruments – Presentation

Effective for interim and annual financial statements for fiscal years beginning on or after October 1, 2007, the new CICA Handbook Sections 3862 and 3863 will replace Section 3861 to prescribe the requirements for presentation and disclosure of financial instruments.

9

3.     Segmented Information

	Three months ended March 31
	Pipelines				Energy				Corporate				Total
(unaudited — millions of dollars)	2007		2006		2007		2006		2007		2006		2007		2006
Revenues	1,124		977		1,125		917		—		—		2,249		1,894
Plant operating costs and other	(383	)	(317	)	(347	)	(219	)	(2	)	(1	)	(732	)	(537	)
Commodity purchases resold	—		—		(576	)	(505	)	—		—		(576	)	(505	)
Depreciation	(251	)	(226	)	(39	)	(31	)	—		—		(290	)	(257	)
	490		434		163		162		(2	)	(1	)	651		595
Financial charges and non-controlling interests	(217	)	(192	)	1		—		(49	)	(35	)	(265	)	(227	)
Financial charges of joint ventures	(16	)	(14	)	(5	)	(7	)	—		—		(21	)	(21	)
Income from equity investments	6		18		—		—		—		—		6		18
Interest income and other	7		32		3		2		15		15		25		49
Income taxes	(115	)	(121	)	(56	)	(57	)	40		9		(131	)	(169	)
Income from Continuing Operations	155		157		106		100		4		(12	)	265		245
Income from Discontinued Operations													—		28
Net Income													265		273

Total Assets

(unaudited — millions of dollars)	March 31, 2007	December 31, 2006
Pipelines	23,764	18,320
Energy	6,292	6,500
Corporate	1,046	1,089
	31,102	25,909

4.     Acquisitions and Dispositions

ANR and Great Lakes

In February 2007, TransCanada acquired American Natural Resources Company and ANR Storage Company (together ANR) and an additional 3.55 per cent interest in Great Lakes from El Paso Corporation for approximately US$3.4 billion, subject to certain post-closing adjustments, including US$491 million of assumed long-term debt. The acquisition was accounted for using the purchase method of accounting. TransCanada began consolidating ANR and Great Lakes, in the Pipelines segment, subsequent to the acquisition date. The preliminary allocation of the purchase price was as follows .

Purchase Price Allocation

(unaudited) (millions of US dollars)	ANR		Great Lakes		Total
Current assets	260		4		264
Plant, property and equipment	1,871		35		1,906
Other non-current assets	84		—		84
Goodwill	1,759		21		1,780
Current liabilities	(169	)	(3	)	(172	)
Long-term debt	(475	)	(16	)	(491	)
Other non-current liabilities	(441	)	(13	)	(454	)
	2,889		28		2,917

A preliminary allocation of the purchase price has been made using fair values of the net assets at the date of acquisition.  As ANR’s and Great Lakes’ tolls are subject to rate regulation based on historical costs, the regulated net assets, other than gas held for sale, were determined to have a fair value equal to their rate regulated values.

10

Goodwill will be evaluated on an annual basis for impairment. Factors that contributed to goodwill included the opportunity to expand in the US market and gaining a stronger competitive position in the North American gas transmission business. The goodwill recognized on this transaction is not amortizable for tax purposes.

PipeLines LP Acquisition of Great Lakes

In February 2007, PipeLines LP acquired a 46.45 per cent interest in Great Lakes from El Paso Corporation for approximately US$942 million, subject to certain post-closing adjustments, including US$209 million of assumed long-term debt. The acquisition was accounted for using the purchase method of accounting. TransCanada began consolidating Great Lakes in the Pipelines segment subsequent to the acquisition date. The preliminary allocation of the purchase price was as follows.

Purchase Price Allocation

(unaudited) (millions of US dollars)
Current assets	42
Plant, property and equipment	465
Other non-current assets	1
Goodwill	457
Current liabilities	(23	)
Long-term debt	(209	)
	733

A preliminary allocation of the purchase price has been made using fair values of the net assets at the date of acquisition.  As Great Lakes’ tolls are subject to rate regulation based on historical costs, the regulated net assets, other than gas held for sale, were determined to have a fair value equal to their rate regulated values.

Goodwill will be evaluated on an annual basis for impairment. Factors that contributed to goodwill included the opportunity to expand in the US market and gaining a stronger competitive position in the North American gas transmission business. The goodwill recognized on this transaction is amortizable for tax purposes.

PipeLines LP

In February 2007, PipeLines LP completed a private placement offering of 17,356,086 common units at a price of US$34.57 per unit, of which 50 per cent of the units were acquired by TransCanada for US$300 million. TransCanada also invested an additional US$12 million to maintain its general partnership ownership interest in PipeLines LP. As a result of these additional investments in PipeLines LP, TransCanada’s ownership in PipeLines LP increased to 32.1 per cent on February 22, 2007. The total private placement plus TransCanada’s additional investment resulted in gross proceeds to PipeLines LP of US$612 million, which were used to partially finance its Great Lakes acquisition.

5.Notes Payable and Long-Term Debt

In March 20, 2007, TCPL filed debt shelf prospectuses in Canada and the U.S. qualifying for the issuance of $1.5 billion of medium-term notes and US$1.5 billion of debt securities, respectively.

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On March 20, 2007, ANR Pipeline Company provided notice to the New York Stock Exchange of its intention to voluntarily withdraw from listing its 9.625 per cent Debentures due 2021, 7.375 per cent Debentures due 2024, and 7.0 per cent Debentures due 2025.  Following the delisting, which became effective April 12, 2007, ANR Pipeline Company deregistered these securities from registration with the U.S. Securities Exchange Commission (SEC).

In February 2007, the Company utilized $1.5 billion and US$700 million of a US$2.2 billion, one-year bridge facility to partially finance the ANR and Great Lakes acquisitions. Interest is charged at a floating rate based on the London Inter Bank Offered Rate (LIBOR). At March 31, 2007, the Company had an outstanding balance of US$488 million on this facility.

Also in February 2007, the Company, through a wholly owned subsidiary, drew US$1.0 billion on a newly-established credit facility consisting of a US$700 million five-year term loan and a US$300 million five-year extendible revolving facility. Interest is charged at a floating rate based on LIBOR. These funds, together with an additional US$100 million from an existing demand line, were used to partially finance the ANR and Great Lakes acquisitions, as well as its additional investment in PipeLines LP. At March 31, 2007, the Company had an outstanding balance of US$1.0 billion on the credit facility and US$85 million on the demand line.

On February 22, 2007, PipeLines LP increased the size of its syndicated revolving credit and term loan facility in connection with its Great Lakes acquisition. The amount available under the facility increased from US$410 million to US$950 million, consisting of a US$700 million senior term loan and a US$250 million senior revolving credit facility, with US$194 million of the senior term loan available being terminated upon closing of the Great Lakes acquisition. Interest was charged at floating rate based on LIBOR.

6.Share Capital

In February and March 2007, TransCanada issued, through a subscription receipts offering, 45,390,500 common shares at a price of $38.00 each, resulting in gross proceeds of approximately $1.725 billion, which were used towards financing the acquisition of ANR and Great Lakes.

7.Financial Instruments and Risk Management

The carrying values of the financial assets and liabilities represented on the Consolidated Balance Sheet approximate fair values except for long-term debt.  The fair value of long-term debt at March 31, 2007 approximated the reported amount at December 31, 2006.

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The fair values of financial instruments that are included in Other Current Assets, Other Assets, Accounts Payable and Deferred Amounts at March 31, 2007 are as follows.

Financial Instruments Summary (1) (2)

	March 31, 2007
(unaudited)	Fair
(millions of dollars)	Value
FINANCIAL ASSETS (3)
Held-for-trading (4) (5)	119
Loans and Receivables	236
Available-for-sale (4)	15
Total	370
Hedges (6)
Cash flow hedges	69
Fair value hedges	1
Net investment hedges	73
Total	143
	513
FINANCIAL LIABILITIES (7)
Held-for-trading (4) (5)	135
Other financial liabilities	73
Total	208
Hedges (6)
Cash flow hedges	240
	448

(1)   Includes derivatives used in our regulatory operations at their regulatory values.

(2)   Consolidated Net Income for the three months ended March 31, 2007 included $4 million of net losses related to fair value adjustments of financial assets and liabilities.

(3)   Current Other Assets included $20 million of held-for-trading financial assets and $32 million of cash flow hedges. The remainder of the financial assets are included in Other Assets.

(4)   At December 31, 2006, Other Assets included $103 million and $14 million of financial instruments that would be classified in 2007 as held-for-trading and available-for-sale, respectively. Deferred amounts included $69 million of financial instruments that would be classified in 2007 as held-for-trading.

(5)   Consolidated Net Income for the three months ended March 31, 2007 included $4 million of net losses related to fair value adjustments of held-for-trading financial instruments.

(6)   Consolidated Net Income for the three months ended March 31, 2007 did not include any amounts for the change in fair value of cash flow hedges and fair value hedges that was ineffective in offsetting the change in fair value of their related underlyings.

(7)   Accounts Payable included $8 million of held-for-trading financial liabilities and $108 million of cash flow hedges. The remainder of the financial liablitites are included in Deferred Amounts.

13

Interest, Foreign Exchange and Energy Risk Management

During the period, the Company had positions in the following types of derivatives:

Forwards and futures contracts are contractual agreements to buy or sell a specific financial instrument at a specified price and date in the future. The Company enters into foreign exchange and commodity forwards and futures to mitigate volatility in changes in foreign exchange rates and power and gas prices, respectively.

Swaps are contractual agreements between two parties to exchange movements in interest or foreign currency rates. The Company enters into interest rate and cross-currency swaps to mitigate changes in interest rates and foreign exchange, respectively.

Options are contractual agreements to convey the right, but not the obligation, for the purchaser either to buy or sell a specific amount of a financial instrument at a fixed price, either at a fixed date or at any time within a specified period. The Company enters into option agreements to mitigate changes in interest rates, foreign exchange and commodity prices.

The Company has long-term debt, interest rate swaps and interest rate options that have a fixed interest rate and, therefore, are subject to interest rate price risk. The Company has long-term debt, interest-rate swaps and interest-rate options, which have a floating interest rate and, therefore, are subject to interest rate cash flow risk.

The Company calculated the fair value of foreign exchange and interest rate derivatives using quoted market rates. The fair value of power and natural gas derivatives was calculated using estimated forward prices for the relevant period. The changes in fair value for interest rate and foreign exchange derivatives are included in Financial Charges and Interest Income and Other, respectively.

The Company executes power, natural gas and heat rate derivatives for overall management of its asset portfolio. Heat rate contracts are agreements for the sale or purchase of power that are priced based on a natural gas index. In accordance with the Company’s accounting policy, the fair value of these derivatives are recorded as financial assets and liabilities.

The Company hedges its net investment in self-sustaining foreign operations with U.S. dollar-denominated debt, cross-currency swaps, forward exchange contracts and options. At March 31, 2007, the Company had designated U.S. dollar-denominated debt with a carrying value of $3,333 million (US$2,891 million) and a fair value of $3,511 million (US$3,045 million) and swaps, forwards and options with a fair value of $73 million (US$64 million) as net investment hedges.

Other Risk Management

Currency risk arises when the fair value or future cash flows of a financial instrument fluctuate due to changes in foreign exchange rates. The Company manages currency risk through the use of derivatives such as currency swaps, options and forward foreign exchange contracts.

14

Market risk is the risk that the fair value of future cash flows of financial instruments will fluctuate due to changes in market variables such as interest rates, foreign exchange and commodity prices. In order to manage market risk, the Company enters into offsetting physical positions and derivative financial instruments. Liquidity risk is the risk that an entity will encounter difficulty in meeting obligations associated with financial instruments.

8.Income Taxes

In first quarter 2007, TransCanada recorded income tax benefits of approximately $10 million from the resolution of certain income tax matters, as well as a $5 million income tax benefit from an internal restructuring.

9.Employee Future Benefits

The net benefit plan expense for the Company’s defined benefit pension plans and other post-employment benefit plans for the three months ended March 31, 2007 is as follows.

Three months ended March 31	Pension Benefit Plans				Other Benefit Plans
(unaudited - millions of dollars)	2007		2006		2007	2006
Current service cost	11		9		—	—
Interest cost	17		17		1	2
Expected return on plan assets	(19	)	(18	)	—	—
Amortization of transitional obligation related to regulated business	—		—		1	1
Amortization of net actuarial loss	6		7		1	1
Amortization of past service costs	1		1		—	—
Net benefit cost recognized	16		16		3	4

TransCanada welcomes questions from shareholders and potential investors. Please telephone:

Investor Relations, at 1-800-361-6522 (Canada and U.S. Mainland) or direct dial David Moneta/Myles Dougan at (403) 920-7911. The investor fax line is (403) 920-2457. Media Relations: Shela Shapiro at (403) 920-2240

Visit TransCanada’s Internet site at: http://www.transcanada.com

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EX-13.3

Exhibit 13.3

TRANSCANADA CORPORATION
RECONCILIATION TO UNITED STATES GAAP

March 31, 2007

TRANSCANADA CORPORATION
RECONCILIATION TO UNITED STATES GAAP

The unaudited consolidated financial statements of TransCanada Corporation (TransCanada or the Company) for the three months ended March 31, 2007 have been prepared in accordance with Canadian generally accepted accounting principles (GAAP), which in some respects, differ from U.S. GAAP.  The effects of these differences on the Company’s consolidated financial statements for the three months ended March 31, 2007 are provided in the following U.S. GAAP condensed consolidated financial statements which should be read in conjunction with TransCanada’s audited consolidated financial statements for the year ended December 31, 2006 and unaudited consolidated financial statements for the three months ended March 31, 2007 prepared in accordance with Canadian GAAP.

Condensed Statement of Consolidated Income and Other Comprehensive Income in Accordance with U.S. GAAP(1)

(unaudited)	Three months ended March 31
(millions of dollars except per share amounts)	2007			2006
Revenues	1,894			1,493
Plant operating costs and other	588			430
Commodity purchases resold	522			365
Depreciation	249			223
	1,359			1,018
	535			475
Other (income)/expenses
Income from equity investments(1)	(103		)	(119		)
Other expenses(2)	246			179
Income taxes	130			169
	273			229
Income from continuing operations — U.S. GAAP	262			246
Net income from discontinued operations — U.S. GAAP	—			28
Net Income in Accordance with U.S. GAAP	262			274
Adjustments affecting comprehensive income under U.S. GAAP
Foreign currency translation adjustment, net of tax	(28		)	(4		)
Change in funded status of postretirement plan liability, net of tax(3)	2			—
Change in equity investment funded status of postretirement plan liability, net of tax(3)	9			—
Unrealized (loss)/gain on derivatives, net of tax	(9		)	18
Comprehensive Income in Accordance with U.S. GAAP(4)	236			288
Net Income Per Share in Accordance with U.S. GAAP
Continuing operations	$	0.51		$	0.50
Discontinued operations	—			0.06
Basic	$	0.51		$	0.56
Diluted	$	0.51		$	0.56
Net Income Per Share in Accordance with Canadian GAAP
Basic	$	0.52		$	0.56
Diluted	$	0.52		$	0.56
Dividends per common share	$	0.34		$	0.32
Common Shares Outstanding (millions)
Average for the period — Basic	508			487
Average for the period — Diluted	511			490

2

Reconciliation of Income from Continuing Operations

(unaudited)	Three months ended March 31
(millions of dollars)	2007		2006
Net Income from Continuing Operations in Accordance with Canadian GAAP	265		245
U.S. GAAP adjustments
Unrealized gain on energy contracts	—		1
Unrealized loss on foreign exchange and interest rate derivatives(5)	(4	)	—
Tax impact of loss on foreign exchange and interest rate derivatives	1		—
Income from Continuing Operations in Accordance with U.S. GAAP	262		246

Condensed Statement of Consolidated Cash Flows in Accordance with U.S. GAAP(1)

(unaudited)	Three months ended March 31
(millions of dollars)	2007		2006
Cash Generated from Operations(8)
Net cash provided by operating activities	689		494
Investing Activities
Net cash used in investing activities	(4,679	)	(264	)
Financing Activities
Net cash provided by/(used in) financing activities	3,959		(61	)
Effect of Foreign Exchange Rate Changes on Cash and Short-Term Investments	(3	)	1
(Decrease)/Increase in Cash and Short-Term Investments	(34	)	170
Cash and Short-Term Investments
Beginning of period	288		83
Cash and Short-Term Investments
End of period	254		253

Condensed Balance Sheet in Accordance with U.S. GAAP(1)

(millions of dollars)	March 31, 2007 (unaudited)	December 31, 2006
Current assets	1,717	1,551
Long-term investments(6)(7)	2,784	2,922
Plant, property and equipment	20,513	17,430
Regulatory asset(9)	2,154	2,199
Other assets(6)	4,355	1,720
	31,523	25,822
Current liabilities(10)	3,636	2,541
Deferred amounts(7)	1,116	987
Long-term debt	12,948	10,913
Deferred income taxes(9)	3,078	2,734
Preferred securities	530	536
Non-controlling interests	1,106	755
Shareholders’ equity	9,109	7,356
	31,523	25,822

3

Statement of Accumulated Other Comprehensive Income in Accordance with U.S. GAAP(11)

(unaudited) (millions of dollars)	Under-funded Postretirement Plan Liability (SFAS No. 158)		Cumulative Translation Account		Minimum Pension Liability (SFAS No. 87)		Cash Flow Hedges (SFAS No. 133)		Total
Balance at December 31, 2006	(246	)	(90	)	—		(82	)	(418	)
Change in funded status of postretirement plan liability, net of tax of $(1)	2		—		—		—		2
Change in equity investment funded status of postretirement plan liability, net of tax of $(4)	9		9		—		—		—
Unrealized loss on derivatives, net of tax of $6	—		—		—		(9	)	(9	)
Foreign currency translation adjustment, net of tax of $(10)	—		(28	)	—		—		(28	)
Balance at March 31, 2007	(235	)	(118	)	—		(91	)	(444	)
Balance at December 31, 2005	—		(89	)	(77	)	(58	)	(224	)
Unrealized gain on derivatives, net of tax of $(10)	—		—		—		18		18
Foreign currency translation adjustment, net of tax of $3	—		(4	)	—		—		(4	)
Balance at March 31, 2006	—		(93	)	(77	)	(40	)	(210	)

(1)In accordance with U.S. GAAP, the Condensed Statement of Consolidated Income, Statement of Consolidated Cash Flows, Consolidated Balance Sheet and Statement of Accumulated Other Comprehensive Income of TransCanada are prepared using the equity method of accounting for joint ventures.

(2)Other expenses include an allowance for funds used during construction of $3 million for the three months ended March 31, 2007 (March 31, 2006 — $1 million).

(3)Represents the amortization of net loss and prior service cost amounts previously recorded in accumulated other comprehensive income under Statement of Financial Accounting Standards No.158 “Employers’ Accounting for Defined Benefit Pension and Other Postretirement Plans” for the Company’s defined benefit pension and other postretirement plans.

(4)For the three months ended March 31, 2007, Comprehensive Income in Accordance with U.S. GAAP is $3 million higher than under Canadian GAAP.  In addition to the difference between Canadian and U.S. GAAP net income described in the Reconciliation of Income from Continuing Operations, substantially all of the difference between Comprehensive Income in Accordance with Canadian and U.S. GAAP at March 31, 2007 relates to the accounting treatment for defined benefit pension and other postretirement plans.

4

(5)Represents the amortization of certain hedges that became ineffective at different times under Canadian and U.S. GAAP.

(6)Under Canadian GAAP, pre-operating costs incurred during the commissioning phase of a new project are deferred until commercial production levels are achieved.  After such time, those costs are amortized over the estimated life of the project.  Under U.S. GAAP, such costs are expensed as incurred.  Certain start-up costs incurred by Bruce Power L.P. (Bruce B), an equity investment, were expensed under U.S. GAAP.  Under both Canadian GAAP and U.S. GAAP, interest is capitalized on expenditures relating to construction of development projects actively being prepared for their intended use.  In Bruce B, under U.S. GAAP, the carrying value of development projects against which interest is capitalized is lower due to the expensing of certain pre-operating costs.

(7)Financial Interpretation (FIN) 45 requires the recognition of a liability for the fair value of certain guarantees that require payments contingent on specified types of future events.  The measurement standards of FIN 45 are applicable to guarantees entered into after January 1, 2003.  For U.S. GAAP purposes, the fair value of guarantees recorded as a liability at March 31, 2007 was $16 million (March 31, 2006 - $18 million) and relates to the Company’s equity interest in Bruce B and Bruce Power A L.P.  The net income impact with respect to the guarantees for the three months ended March 31, 2007 was nil (March 31, 2006 - nil).

(8)In accordance with U.S. GAAP, all current taxes are included in cash generated from operations.

(9)Under U.S. GAAP, the Company is required to record a deferred income tax liability for its cost-of-service regulated businesses. As these deferred income taxes are recoverable through future revenues, a corresponding regulatory asset is recorded for U.S. GAAP purposes.

(10)Current liabilities at March 31, 2007 include dividends payable of $187 million (December 31, 2006 - $162 million) and current taxes payable of $156 million (December 31, 2006 - $71 million).

(11)At March 31, 2007, Accumulated Other Comprehensive Income in Accordance with U.S. GAAP is $226 million higher than under Canadian GAAP.  Substantially all of the difference relates to the accounting treatment for defined benefit pension and other postretirement plans.

Income Taxes

TransCanada adopted FASB Interpretation 48, Accounting for Uncertainty in Income Taxes (“FIN 48”), at the beginning of fiscal year 2007.   The implementation of the provisions under FIN 48 as of January 1, 2007 did not have a material impact on the U.S. GAAP financial statements of the Company and no adjustment to the beginning balance of retained earnings was required for the adoption of FIN 48.  At the beginning of 2007, TransCanada had approximately $80 million of unrecognized tax benefits that, if recognized, would favorably affect the effective income tax rate in any future periods.  During the first quarter of 2007, TransCanada recognized in income approximately $10 million on the favorable resolution of certain income tax matters. At March 31, 2007 the total unrecognized tax benefit is approximately $71 million.  Subject to the results of audit examinations by taxing authorities and legislative amendments, TransCanada does not anticipate adjustments to the unrecognized tax benefits during the next twelve months that would have a material impact on its financial statements.

TransCanada and its subsidiaries are subject to either Canadian federal and provincial income tax, U.S. federal, state and local income tax or the relevant income tax in other international jurisdictions. The Company has substantially concluded all Canadian federal and provincial income tax matters for the years through 2001. Canadian federal income tax returns for years 2002 and 2003 are currently under examination by the Canada Revenue Agency, which has not proposed any significant adjustments.  Substantially all material U.S. federal income tax matters have been concluded for years through 2002 and U.S. state and local income tax matters through 2001.

TransCanada’s continuing practice is to recognize interest and penalties related to income tax uncertainties in income tax expense. The Company had $10 million accrued for interest and nil accrued for penalties at March 31, 2007, and $13 million and nil, respectively, at December 31, 2006.

5

Other

In February 2006, the U.S. Financial Accounting Standards Board (FASB) issued SFAS No. 155 “Accounting for Certain Hybrid Financial Instruments — an amendment of SFAS No. 133 and 140”, which is effective for fiscal years beginning after September 15, 2006.  SFAS No. 155 permits fair value remeasurement of any hybrid instrument that contains an embedded derivative that otherwise would require bifurcation.  TransCanada’s U.S. GAAP financial statements were not impacted by SFAS 155.

In March 2006, FASB issued SFAS No. 156 “Accounting for Servicing of Financial Assets – an amendment of FASB Statement No. 140”, which is effective for fiscal years beginning after September 15, 2006.  SFAS No. 156 requires recognition of a servicing asset or liability when an entity enters into arrangements to service financial instruments in certain situations.  Such servicing assets or servicing liabilities are required to be initially measured at fair value, if practicable.  SFAS No. 156 also allows an entity to subsequently measure its servicing assets or servicing liabilities using either an amortization method or a fair value method.  Adopting the provisions under SFAS No. 156 as of January 1, 2007 did not have an impact on the U.S. GAAP financial statements of the Company.

In July 2006, FASB issued FIN 48 “Accounting for Uncertainty in Income Taxes, an interpretation of FASB Statement No. 109”, which is effective for fiscal years beginning after December 15, 2006.  This Interpretation provides guidance for the financial statement recognition, measurement, presentation and disclosure of uncertain tax positions taken or expected to be taken in income tax returns.

In September 2006, FASB issued SFAS No. 157 “Fair Value Measurements”, which is effective for fiscal years beginning after November 15, 2007. This statement defines fair value, establishes a framework for measuring fair value, and expands disclosures about fair value measurements.  TransCanada is in the process of assessing the impact of the application of SFAS No. 157 on its U.S. GAAP financial statements.

In February 2007, FASB issued SFAS No.159 “The Fair Value Option for Financial Assets and Financial Liabilities – Including an Amendment of FASB Statement No. 115”, which allows an entity to choose to measure many financial instruments and certain other items at fair value for fiscal years beginning on or after November 15, 2007.  TransCanada is currently assessing the impact of adopting this standard on January 1, 2008.

Summarized Financial Information of Long-Term Investments

The following summarized financial information of long-term investments includes those investments that are accounted for by the equity method under U.S. GAAP (including those that are accounted for by the proportionate consolidation method under Canadian GAAP).

(unaudited)	Three months ended March 31
(millions of dollars)	2007		2006
Income
Revenues	396		356
Plant operating costs and other	(229	)	(174	)
Depreciation	(43	)	(40	)
Financial charges and other	(21	)	(23	)
Proportionate share of income before income taxes of long-term investments	103		119

(millions of dollars)	March 31, 2007 (unaudited)		December 31, 2006
Balance Sheet
Current assets	397		446
Plant, property and equipment	3,782		4,177
Other assets	84		198
Current liabilities	(383	)	(445	)
Deferred amounts	(231	)	(235	)
Long-term debt of joint ventures	(928	)	(1,266	)
Deferred income taxes	63		47
Proportionate share of net assets of long-term investments	2,784		2,922

6

EX-31.1

Exhibit 31.1

Certifications

I, Harold N. Kvisle, certify that:

1.I have reviewed this quarterly report on Form 6-K of TransCanada Corporation;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal controls over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)           designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)           designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)           evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)           disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)           all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)           any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

	/s/ Harold N. Kvisle
Dated April 27, 2007	Harold N. Kvisle
	President and Chief Executive Officer

EX-31.2

Exhibit 31.2

Certifications

I, Gregory A. Lohnes, certify that:

1.I have reviewed this quarterly report on Form 6-K of TransCanada Corporation;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal controls over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)           designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)           designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)           evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)           disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)           all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)           any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

	/ s / Gregory A. Lohnes
Dated April 27, 2007	Gregory A. Lohnes
	Executive Vice-President and
	Chief Financial Officer

EX-32.1

Exhibit 32.1

TRANSCANADA CORPORATION

450 – 1st Street S.W.

Calgary, Alberta, Canada

T2P 5H1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

REGARDING PERIODIC REPORT CONTAINING

FINANCIAL STATEMENTS

I, Harold N. Kvisle, the Chief Executive Officer of TransCanada Corporation (the “Company”), in compliance with 18 U.S.C.  Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, hereby certify, in connection with the Company’s Quarterly Report as filed on Form 6-K for the period ended March 31, 2007 with the Securities and Exchange Commission (the “Report”), that:

1.the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Harold N. Kvisle

Harold N. Kvisle

Chief Executive Officer

April 27, 2007

EX-32.2

Exhibit 32.2

TRANSCANADA CORPORATION

450 – 1st Street S.W.

Calgary, Alberta, Canada

T2P 5H1

CERTIFICATION OF CHIEF FINANCIAL OFFICER

REGARDING PERIODIC REPORT CONTAINING

FINANCIAL STATEMENTS

I, Gregory A. Lohnes, the Chief Financial Officer of TransCanada Corporation (the “Company”), in compliance with 18 U.S.C.  Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, hereby certify, in connection with the Company’s Quarterly Report as filed on Form    6-K for the period ended March 31, 2007 with the Securities and Exchange Commission (the “Report”), that:

1.the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/ s / Gregory A. Lohnes

Gregory A. Lohnes

Chief Financial Officer

April 27, 2007

EX-99.1

Exhibit 99.1

TRANSCANADA CORPORATION – FIRST QUARTER 2007

Quarterly Report to Shareholders

Media Inquiries:	Shela Shapiro	(403) 920-7859
		(800) 608-7859
		(403) 920-7911
Analyst Inquiries:	David Moneta/Myles Dougan	(800) 361-6522

TransCanada Announces First Quarter Results, BoardDeclares Dividend of $0.34 per Common Share

CALGARY, Alberta –April 27, 2007 – (TSX: TRP) (NYSE: TRP)

First Quarter Highlights

(All financial figures are unaudited and in Canadian dollars unless noted otherwise)

·Net income for first quarter 2007 of $265 million or $0.52 per share

·Comparable earnings for first quarter 2007 of $250 million or $0.49 per share, compared to $0.46 per share in first quarter 2006

·Funds generated from operations for first quarter 2007 of $582 million

·Dividend of $0.34 per common share declared by the Board of Directors

·Successfully completed acquisition of American Natural Resources Company and ANR Storage Company (collectively, ANR) and an additional 3.55 per cent interest in Great Lakes Gas Transmission Limited Partnership (Great Lakes)

TransCanada Corporation today announced net income for first quarter 2007 was $265 million or $0.52 per share compared with $273 million or $0.56 per share for first quarter 2006. Net income from continuing operations for first quarter 2007 was $265 million or $0.52 per share, compared to $245 million or $0.50 per share, in first quarter 2006.

Comparable earnings were $250 million ($0.49 per share) for first quarter 2007 compared to $227 million ($0.46 per share) in first quarter 2006. The increase in comparable earnings is primarily due to income from ANR, Tamazunchale and Bécancour. Comparable earnings exclude positive income tax adjustments of $15 million in first quarter 2007. In first quarter 2006, comparable earnings excluded an $18 million bankruptcy settlement with Mirant Corporation and certain of its subsidiaries.

Net cash provided by operations was $618 million, compared with $515 million for the same period in 2006. Funds generated from operations

in first quarter 2007 were $582 million, compared with $517 million for the same period in 2006.

“The close of the ANR and Great Lakes acquisition in the first quarter was a significant milestone for TransCanada,” said Hal Kvisle, TransCanada’s chief executive officer. “These assets are a great fit with our pipeline business and extend our services further into key U.S. markets.”

“We continue to make progress on a number of growth projects in both our pipelines and energy businesses, including oil pipelines, gas pipelines, power, gas storage and LNG.”

Notable developments in Pipelines, Energy and Corporate in first quarter 2007 include:

Pipelines:

·The close of the ANR and Great Lakes acquisition on February 22. This acquisition added approximately 17,000 kilometres (10,500 miles) of pipeline, and gas storage facilities with a total capacity of approximately 230 Bcf.

·Increased ownership in TC PipeLines, LP to 32.1 per cent in conjunction with the TC PipeLines, LP acquisition of a 46.45 per cent interest in Great Lakes. TransCanada also became the operator of Northern Border on April 1, 2007, and now operates all three TC PipeLines, LP investments.

·Significant milestone reached on the proposed Keystone Oil Pipeline. The National Energy Board (NEB) approved TransCanada’s application to transfer a portion of the Canadian Mainline facilities to Keystone.

·Agreement on a five-year settlement for the Canadian Mainline with interested stakeholders regarding 2007 tolls and costs for years 2008 to 2011. This settlement demonstrates TransCanada’s continued collaborative relationship with customers.

Energy:

·Progress continues on the Bruce Power restart program. Two steam generators were removed in preparation for replacement as part of preparation for the Unit 1 and 2 restart. The return of these two units will add 1,500 megawatts of capacity to the Ontario power grid and provide a long-term solution to help meet the province’s increasing power needs.

·Progress has been made on two power generating station projects in Ontario.  The Halton Hills Generating Station (683 MW) completed an Environmental Review, and construction work is progressing on the Portlands Energy Centre (550 MW), a partnership with Ontario Power Generation.

Corporate:

·TransCanada subscribed for half of the offering of TC PipeLines, LP US$600 million private placement of common units.

·Successfully raised $1.725 billion in equity through a public offering of subscription receipts which were converted to common shares, and subsequent exercise of over-allotment option by the underwriters.

·On April 4, 2007, Standard & Poor’s (S&P) changed its outlook on TransCanada from A- with a ‘negative’ outlook to A- ‘stable’.

Teleconference – Audio and Slide Presentation

TransCanada will hold a teleconference today at 1 p.m. (Mountain) / 3 p.m. (Eastern) to discuss the first quarter 2007 financial results and general developments and issues concerning the company. Analysts, members of the media and other interested parties wanting to participate should phone 1-866-898-9626 or 416-340-2216 (Toronto area) at least 10 minutes prior to the start of the teleconference. No passcode is required. A live audio and slide presentation webcast of the teleconference will also be available on TransCanada’s website at www.transcanada.com.

The conference will begin with a short address by members of TransCanada’s executive management, followed by a question and answer period for investment analysts. A question and answer period for members of the media will immediately follow.

A replay of the teleconference will be available two hours after the conclusion of the call until midnight (Eastern) May 4, 2007. Please call 1-800-408-3053 or 416-695-5800 (Toronto area) and enter passcode 3220047. The webcast will be archived and available for replay on www.transcanada.com.

About TransCanada

With more than 50 years experience, TransCanada is a leader in the responsible development and reliable operation of North American energy infrastructure including natural gas pipelines, power generation, gas storage facilities, and projects related to oil pipelines and LNG facilities. TransCanada’s network of wholly owned pipelines extends more than 59,000 kilometres (36,500 miles), tapping into virtually all major gas supply basins in North America. TransCanada is one of the continent’s largest providers of gas storage and related services with approximately 360 billion cubic feet of storage capacity. A growing independent power producer, TransCanada owns, or has interests in, approximately 7,700 megawatts of power generation in Canada and the United States. TransCanada’s common shares trade on the Toronto and New York stock exchanges under the symbol TRP.

FORWARD-LOOKING INFORMATION

This news release may contain certain information that is forward looking and is subject to important risks and uncertainties. The words “anticipate”, “expect”, “may”, “should”, “estimate”, “project”, “outlook”, “forecast” or other similar words are used to identify such forward-looking information. All forward-looking statements are based on TransCanada’s beliefs and assumptions based on information available at the time such statements were made. The results or events predicted in this information may differ from actual results or events. Factors which could cause actual results or events to differ materially from current expectations include, among other things, the ability of TransCanada to successfully implement its strategic initiatives and whether such strategic initiatives will yield the expected benefits, the availability and price of energy commodities, regulatory decisions, changes in environmental and other laws and regulations, competitive factors in the pipeline and energy industry sectors, construction and completion of capital projects, access to capital markets, interest and currency exchange rates, technological developments and the current economic conditions in North America. By its nature, such forward-looking information is subject to various risks and uncertainties which could cause TransCanada’s actual results and experience to differ materially from the anticipated results or other expectations expressed. For additional information on these and other factors, see the reports filed by TransCanada with Canadian securities regulators and with the U.S. Securities and Exchange Commission. Readers are cautioned not to place undue reliance on this forward-looking information, which is given as of the date it is expressed in this news release or otherwise, and TransCanada undertakes no obligation to update publicly or revise any forward-looking information, whether as a result of new information, future events or otherwise, except as required by law.

NON-GAAP MEASURES

The Company uses the measures “comparable earnings”, “comparable earnings per share” and “funds generated from operations” in this news release. These measures do not have any standardized meaning prescribed

by generally accepted accounting principles (GAAP) and are therefore considered to be non-GAAP measures. These measures are unlikely to be comparable to similar measures presented by other entities. These measures have been used to provide readers with additional information on the Company’s operating performance, liquidity and its ability to generate funds to finance its operations.

Comparable earnings is comprised of net income from continuing operations adjusted for specified items that are significant and not typical of the Company’s operations. Specified items may include, but are not limited to, certain income tax refunds and adjustments, gains or losses on sales of assets, legal settlements and bankruptcy settlements received from former customers. A reconciliation of comparable earnings to net income is presented in the Consolidated Results of Operation section in the MD&A accompanying this news release. Comparable earnings per share is calculated by dividing comparable earnings by the weighted average number of shares outstanding for the period.

Funds generated from operations is comprised of net cash provided by operations before changes in operating working capital. A reconciliation of funds generated from operations to net cash provided by operations is presented in the First Quarter 2007 Financial Highlights chart in this news release.

First Quarter 2007 Financial Highlights

(unaudited)

Operating Results

Three months ended March 31
(millions of dollars)	2007	2006
Revenues	2,249	1,894
Net Income
Continuing operations	265	245
Discontinued operations	—	28
	265	273
Comparable Earnings (1)	250	227
Cash Flows
Funds generated from operations (1)	582	517
Decrease/(increase) in operating working capital	36	(2	)
Net cash provided by operations	618	515
Capital Expenditures	306	303
Acquisitions, Net of Cash Acquired	4,265	—

Common Share Statistics	2007		2006
Net Income Per Share - Basic
Continuing operations	$	0.52	$	0.50
Discontinued operations	—		0.06
	$	0.52	$	0.56
Comparable Earnings Per Share - Basic (1)	$	0.49	$	0.46
Dividends Declared Per Share	$	0.34	$	0.32
Common Shares Outstanding (millions)
Average for the period	508		487
End of period	535		488

(1)  For a further discussion on comparable earnings, funds generated from operations and comparable earnings per share, refer to the Non-GAAP Measures section in Management’s Discussion and Analysis of this First Quarter 2007 Quarterly Report to Shareholders.