EX-23.1 7 a2148911zex-23_1.htm EXHIBIT 23.1
QuickLinks -- Click here to rapidly navigate through this document


EXHIBIT 23.1

GRAPHIC            
    KPMG LLP        
    Chartered Accountants   Telephone   (403) 691-8000
    1200-205 5 Avenue SW   Fax   (403) 691-8008
    Calgary AB    T2P 4B9   Internet   www.kpmg.ca

    

 

 

 

 

 

 

Consent of Independent Registered Chartered Accountants

TC PipeLines, LP:

We consent to the incorporation by reference in the registration statement on Form S-3 of TC PipeLines, LP, dated December 22, 2004, of our report dated March 4, 2004, with respect to the balance sheets of TC PipeLines, LP as of December 31, 2003 and 2002, and the related statements of income, comprehensive income, cash flows and changes in partners' equity for each of the years in the three-year period ended December 31, 2003, which report appears in TC PipeLines, LP annual report on Form 10-K for the year ended December 31, 2003, and to the reference to our firm under the heading "Experts" in the prospectus.


 

 

/s/  
KPMG LLP      
KPMG LLP

Calgary, Canada
December 22, 2004

    KPMG LLP, a Canadian owned limited liability partnership, is the Canadian
member firm of KPMG International, a Swiss association
      



QuickLinks

EXHIBIT 23.1