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                                                                      EXHIBIT 4

                           TRANSCANADA PIPELINES LIMITED
        U.S. GAAP CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

CONDENSED STATEMENT OF CONSOLIDATED INCOME AND COMPREHENSIVE INCOME IN
ACCORDANCE WITH U.S. GAAP(1)

<Table>
<Caption>
                                                                      Three months ended                Year ended
                                                                          December 31                   December 31
                                                                  ----------------------------  ----------------------------
(MILLIONS OF DOLLARS)                                                2003           2002          2003           2002
- ----------------------------------------------------------------- --------------  ------------  ------------- --------------
                                                                                                  

Revenues(2)                                                             1,227        1,178          4,919          4,565
                                                                  --------------  ------------  ------------- --------------
Cost of sales(2)                                                          127          127            592            441
Other costs and expenses                                                  424          410          1,663          1,532
Depreciation                                                              209          185            819            729
                                                                  --------------  ------------  ------------- --------------
                                                                          760          722          3,074          2,702
                                                                  --------------  ------------  ------------- --------------
Operating income                                                          467          456          1,845          1,863
Other (income)/expenses
   Equity income(1)(3)(4)                                                 (49)         (61)          (334)          (260)
   Other expenses(4)(5)(6)                                                211          217            841            850
   Income taxes                                                           104          121            515            499
                                                                  --------------  ------------  ------------- --------------
                                                                          266          277          1,022          1,089
                                                                  --------------  ------------  ------------- --------------
Income from continuing operations - U.S. GAAP                             201          179            823            774
Net income from discontinued operations - U.S. GAAP                         -            -             50              -
                                                                  --------------  ------------  ------------- --------------
Income before cumulative effect of the application of
   accounting changes in accordance with U.S. GAAP                        201          179            873            774
Cumulative effect of the application of EITF 02-3, net of tax(2)            -            -            (13)             -
                                                                  --------------  ------------  ------------- --------------
NET INCOME IN ACCORDANCE WITH U.S. GAAP                                   201          179            860            774
Adjustments affecting comprehensive income under U.S. GAAP
   Foreign currency translation adjustment, net of tax(7)                 (11)           -            (54)             1
   Additional minimum pension liability, net of tax(8)                    (11)         (40)            (2)           (40)
   Unrealized (loss)/gain on derivatives, net of tax(4)                    (6)           -              8             (4)
                                                                  --------------  ------------  ------------- --------------
COMPREHENSIVE INCOME IN ACCORDANCE WITH U.S. GAAP                         173          139            812            731
                                                                  ==============  ============  ============= ==============
</Table>

RECONCILIATION OF INCOME FROM CONTINUING OPERATIONS

<Table>
<Caption>
                                                                       Three months ended               Year ended
                                                                          December 31                   December 31
                                                                   ---------------------------  ----------------------------
(MILLIONS OF DOLLARS)                                                 2003          2002          2003           2002
- -----------------------------------------------------------------  -------------  ------------  ------------- --------------
                                                                                                  
Net income from continuing operations in accordance with
   Canadian GAAP                                                          208          195            859            805
U.S. GAAP adjustments
   Preferred securities charges(5)                                        (16)         (15)           (57)           (58)
   Tax impact of preferred securities charges                               6            5             21             22
   Unrealized (loss)/gain on foreign exchange and interest rate
      derivatives(4)                                                       (3)          (1)            (9)            30
   Tax impact of (loss)/gain on foreign exchange and interest
      rate derivatives                                                      1            -              3            (12)
   Unrealized gain/(loss) on energy trading contracts(2)                   14           (7)            28            (21)
   Tax impact of unrealized gain/(loss) on energy trading
      contracts                                                            (5)           2            (10)             8
   Equity loss(3)(4)                                                       (6)           -            (18)             -
   Tax impact of equity loss                                                2            -              6              -
                                                                   -------------  ------------  ------------- --------------
Income from continuing operations in accordance with U.S. GAAP            201          179            823            774
                                                                   =============  ============  ============= ==============
</Table>


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CONDENSED BALANCE SHEET IN ACCORDANCE WITH U.S. GAAP(1)

<Table>
<Caption>
                                                                    December 31,         December 31,
(MILLIONS OF DOLLARS)                                                   2003                 2002
- -----------------------------------------------------------------------------------     ----------------
                                                                                  
Current assets                                                           1,017                1,079
Long-term energy trading assets(2)                                           -                  218
Long-term investments(3)(9)                                              1,760                1,683
Plant, property and equipment(10)                                       15,798               14,992
Regulatory asset(11)                                                     2,721                2,578
Other assets(4)                                                          1,192                  884
                                                                  -----------------     ----------------
                                                                        22,488               21,434
                                                                  =================     ================
Current liabilities(12)                                                  2,117                2,006
Long-term energy trading liabilities(2)                                      -                   41
Deferred amounts(2)(4)(9)(10)                                              741                  789
Long-term debt(4)                                                        9,494                8,963
Deferred income taxes(11)                                                3,039                2,692
Preferred securities(13)                                                   694                  694
Trust originated preferred securities                                        -                  218
Non-controlling interests                                                   82                    -
Shareholders' equity                                                     6,321                6,031
                                                                  -----------------     ----------------
                                                                        22,488               21,434
                                                                  =================     ================
</Table>

STATEMENT OF OTHER COMPREHENSIVE INCOME IN ACCORDANCE WITH U.S. GAAP

<Table>
<Caption>
                                                            Cumulative          Minimum         Cash Flow
                                                            Translation    Pension Liability      Hedges
 (MILLIONS OF DOLLARS)                                        Account        (SFAS No. 87)    (SFAS No. 133)      Total
 ------------------------------------------------------------------------- ----------------- ------------------ ----------
                                                                                                    
 Balance at January 1, 2002                                         13                (56)               (9)       (52)

 Additional minimum liability for employee future
 benefits, net of tax of $22(8)                                      -                (40)                -        (40)
 Unrealized loss on derivatives, net of tax of $(1)(4)               -                  -                (4)        (4)
 Foreign currency translation adjustment, net of tax of
    nil(7)                                                           1                  -                 -          1
                                                          ---------------- ----------------- ----------------- ----------
 Balance at December 31, 2002                                       14                (96)              (13)       (95)

 ADDITIONAL MINIMUM LIABILITY FOR EMPLOYEE FUTURE
    BENEFITS, NET OF TAX OF $1(8)                                    -                 (2)                -         (2)
 UNREALIZED GAIN ON DERIVATIVES, NET OF TAX OF NIL(4)                -                  -                 8          8
 FOREIGN CURRENCY TRANSLATION ADJUSTMENT, NET OF
    TAX OF $(64)(7)                                                (54)                 -                 -        (54)
                                                          ---------------- ------------------------------------ ----------
 BALANCE AT DECEMBER 31, 2003                                      (40)               (98)               (5)      (143)
                                                          ================ ==================================== ==========
</Table>

(1)  In accordance with U.S. GAAP, the Condensed Statement of
     Consolidated Income and Balance Sheet are prepared using the equity
     method of accounting for joint ventures. Excluding the impact of
     other U.S. GAAP adjustments, the use of the proportionate
     consolidation method of accounting for joint ventures, as required under
     Canadian GAAP, results in the same net income and Shareholders' Equity.


Page 2 of 5

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(2)  In 2002, for U.S. GAAP purposes, TransCanada PipeLines Limited
     (TCPL or the Company) adopted the transitional provisions of FASB
     Emerging Issues Task Force (EITF) 02-3, "Accounting for Contracts
     Involved in Energy Trading and Risk Management Activities" whereby
     the Company was netting all revenues and expenses related to
     derivative energy trading contracts. Prior to the adoption of
     EITF 02-3, energy trading contracts were measured at fair value
     determined as at the balance sheet date. The accounting change was
     applied retroactively with reclassification of prior periods.
     Effective January 1, 2003, the Company fully adopted EITF 02-3. This
     accounting change was effected through a cumulative adjustment of
     $(13) million, after tax, in the current year's income with no
     restatement of prior periods. Substantially all of the energy
     trading contracts are accounted for as hedges under Canadian GAAP.
     Subsequent to October 1, 2003, the energy trading contracts that
     qualified as hedges were accounted for as hedges under the provisions of
     Statement of Financial Accounting Standards (SFAS) No. 133. All gains
     or losses on the contracts that did not qualify as hedges, and the
     amounts of any ineffectiveness on the hedging contracts, are
     included in income each period. Substantially all of the amounts
     recorded in 2003 as differences between U.S. and Canadian GAAP
     relate to gains and losses on contracts that were not accounted for as
     hedges.

(3)  (a) 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. (an equity investment) are required to be expensed
     under U.S. GAAP.

     (b) 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 Power L.P.,
     under U.S. GAAP, the carrying value of development projects against
     which interest is capitalized is lower due to the expensing of
     pre-operating costs.

(4)  Under the provisions of SFAS No. 133 "Accounting for
     Derivatives and Hedging Activities", all derivatives are
     recognized as assets and liabilities on the balance sheet and measured
     at fair value. For derivatives designated as fair value hedges,
     changes in the fair value are recognized in earnings together with an
     equal or lesser amount of changes in the fair value of the hedged
     item attributable to the hedged risk. For derivatives designated as
     cash flow hedges, changes in the fair value of the derivatives that
     are effective in offsetting the hedged risk are recognized in other
     comprehensive income until the hedged item is recognized in earnings.
     Any ineffective portion of the change in fair value is recognized in
     earnings each period.

(5)  Under U.S. GAAP, the financial charges related to preferred
     securities are recognized as an expense, rather than dividends.

(6)  Other expenses included an allowance for funds used during
     construction of $2 million for the year ended December 31, 2003 (2002 -
     $4 million).

(7)  Under U.S. GAAP, changes in the foreign currency translation
     adjustment account must be recorded as a component of comprehensive
     income.


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(8)  Under U.S. GAAP, a net loss recognized pursuant to SFAS No. 87
     "Employers' Accounting for Pensions" as an additional pension
     liability not yet recognized as net period pension cost, must be
     recorded as a component of comprehensive income.

(9)  Effective January 1, 2003, the Company adopted the provisions of
     Financial Interpretation (FIN) 45 that require 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, the Company has recorded
     the fair value of the guarantees ($4 million) arising on the
     acquisition of the interest in Bruce Power L.P. as a liability and an
     increase in the cost of the investment.

(10) Effective January 1, 2003, the Company adopted the provisions of
     SFAS No. 143 "Accounting for Asset Retirement Obligations", which
     addresses financial accounting and reporting for obligations associated
     with asset retirement costs. SFAS No. 143 requires that the fair
     value of a liability for an asset retirement obligation be recognized
     in the period in which it is incurred if a reasonable estimate of fair
     value can be made. The fair value is added to the carrying amount of
     the associated asset. The liability is accreted at the end of each
     period through charges to operating expenses.

     The plant, property and equipment of the regulated natural gas
     transmission operations consist primarily of underground pipelines
     and above ground compression equipment and other facilities. No
     amount has been recorded for asset retirement obligations relating
     to these assets as it is not possible to make a reasonable
     estimate of the fair value of the liability due to the
     indeterminate timing and scope of the asset retirements. Management
     believes that all retirement costs associated with the regulated
     pipelines will be recovered through tolls in future periods.

     The plant, property and equipment in the power business consists
     primarily of power plants in Canada and the United States. The
     estimated fair value of the liability for the power plants and
     associated assets as at January 1, 2003 was $6 million. The asset
     retirement cost, net of accumulated depreciation that would have been
     recorded if the cost had been recorded in the period in which it
     arose, is recorded as an additional cost of the assets as at January
     1, 2003. The estimated fair value of the liability as at December 31,
     2003 was $7 million. The cumulative effect of the application of
     SFAS No. 143 on income with respect to the years ended December 31,
     2001 and 2002 would have been less than $1 million. The Company
     has no legal liability for asset retirement obligations with
     respect to its investment in Bruce Power L.P. and the Sundance A and
     B power purchase arrangements.

(11) 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.


Page 4 of 5

<Page>

(12) Current liabilities at December 31, 2003 include dividends payable of
     $136 million (2002 - $125 million) and current taxes payable of $271
     million (2002 - $150 million).

(13) Under U.S. GAAP, the preferred securities are classified as a
     liability. The fair value of the preferred securities at December
     31, 2003 was $612 million (2002 - $743 million). The Company
     made preferred securities charges payments of $57 million for the
     year ended December 31, 2003 (2002 - $58 million).

(14) The Company's Statement of Consolidated Cash Flows under U.S. GAAP
     would be identical to that under Canadian GAAP except that the
     preferred securities charges would be classified with funds
     generated from continuing operations.

(15) Effective December 31, 2003, the Company adopted the provisions of
     FIN 46 "Consolidation of Variable Interest Entities". Adopting these
     provisions has had no impact on the U.S. GAAP financial statements
     of the Company.

SUMMARIZED FINANCIAL INFORMATION OF LONG-TERM INVESTMENTS(16)

<Table>
<Caption>
                                                                       Three months ended               Year ended
                                                                          December 31                   December 31
                                                                   ---------------------------  ----------------------------
(MILLIONS OF DOLLARS)                                                 2003          2002          2003           2002
- -----------------------------------------------------------------  -------------  ------------  ------------- --------------
                                                                                                  
INCOME
Revenues                                                                  257          210          1,063            798
Other costs and expenses                                                 (157)         (77)          (528)          (273)
Depreciation                                                              (28)         (40)          (141)          (146)
Financial charges and other                                               (19)         (28)           (53)          (112)
                                                                   -------------  ------------  ------------- --------------
Proportionate share of income before income taxes of long-term
   investments                                                             53           65            341            267
                                                                   =============  ============  ============= ==============
</Table>

<Table>
<Caption>
                                                                     December 31,       December 31,
(MILLIONS OF DOLLARS)                                                    2003               2002
- ----------------------------------------------------------------   -----------------  ------------------
                                                                                
BALANCE SHEET
Current assets                                                                  385                 246
Plant, property and equipment                                                 2,944               3,251
Other assets (net)                                                                -                 112
Current liabilities                                                            (204)               (216)
Deferred amounts (net)                                                         (286)                  -
Non-recourse debt                                                            (1,060)             (1,646)
Deferred income taxes                                                           (19)                (64)
                                                                   -----------------  ------------------
Proportionate share of net assets of long-term investments                    1,760               1,683
                                                                   =================  ==================
</Table>


(16) This 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).


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