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                                                                  EXHIBIT 32.2

                                 CERTIFICATION

     I, Russell K. Girling, Chief Financial Officer of TC PipeLines GP, Inc.,
the general partner of TC PipeLines, LP (the Partnership), 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
Partnership's Quarterly Report on Form 10-Q for the period ended September
30, 2003 as filed with the Securities and Exchange Commission (the Report) on
the date hereof, that:

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

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

Dated: November 13, 2003

                                     /s/ Russell K. Girling
                                     -----------------------------------------
                                     Russell K. Girling
                                     Chief Financial Officer
                                     TC PipeLines GP, Inc., as general partner
                                     of TC PipeLines, LP