8-K

                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                    FORM 8-K


                                 CURRENT REPORT

     PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

         Date of Report (Date of earliest event reported): JULY 10, 2003


                                TC PIPELINES, LP
             (Exact name of registrant as specified in its charter)


          DELAWARE                      000-26091                52-2135448
(State or other jurisdiction           (Commission            (I.R.S. Employer
      of incorporation)               File Number)           Identification No.)

          110 TURNPIKE ROAD, SUITE 203                      01581
           WESTBOROUGH, MASSACHUSETTS                     (Zip Code)
   (Address of principal executive offices)

                                 (508) 871-7046
              (Registrant's telephone number, including area code)





ITEM 7.  FINANCIAL STATEMENTS AND EXHIBITS.

         (c) Exhibits.

         99.1 Press Release issued by Northern Border Pipeline Company on
         July 10, 2003.


ITEM 9.  REGULATION FD DISCLOSURE

         On July 10, 2003, Northern Border Pipeline Company issued a press
release announcing that it has received commitments from several entities for
transportation capacity at the maximum rate available under its tariff, the
majority of which are for terms of one to two years, leaving approximately
11% of the total system capacity expiring prior to November 1, 2003. TC
PipeLines, LP (the "Partnership") owns a 30% general partner interest in
Northern Border Pipeline Company. A copy of the press release of Northern
Border Pipeline Company is furnished as Exhibit 99.1.

         The information in Item 9 of this report is being furnished, not filed,
pursuant to Regulation FD. Accordingly, the information in Item 9 of this report
will not be incorporated by reference into any registration statement filed by
the Partnership under the Securities Act of 1933, as amended, unless
specifically identified therein as being incorporated therein by reference. The
furnishing of the information in this report is not intended to, and does not,
constitute a determination or admission by the Partnership, that the information
in this report is material or complete, or that investors should consider this
information before making an investment decision with respect to any security of
the Partnership or any of its affiliates.


                                      - 2 -



                                   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.

                                          TC PipeLines, LP

                                          By: TC PipeLines GP, Inc.,
                                              its general partner


Dated:   July 10, 2003                    By:    /s/ THERESA JANG
                                              ---------------------------------
                                              Theresa Jang
                                              Controller


                                      - 3 -



                                  EXHIBIT INDEX

NUMBER         EXHIBIT

99.1.          Press Release issued by Northern Border Pipeline Company on
               July 10, 2003.





                                      - 4 -

EX-99.1

[COMPANY LOGO OMITTED]                            NEWS      13710 FNB Parkway
NORTHERN BORDER                                   RELEASE   Omaha, NE 68154-5200
PIPELINE COMPANY
Northern Plains Natural Gas Company, Operator     For Further Information
                                                  Contact:

                                                  Media Contact:
                                                  Martha Sumner-Kenney
                                                  (402) 492-3401

                                                  Investor Contact:
                                                  Ellen Konsdorf
                                                  (402) 492-7500


NORTHERN BORDER PIPELINE COMPANY ANNOUNCES
SIGNIFICANT CAPACITY COMMITMENTS

FOR IMMEDIATE RELEASE: THURSDAY, JULY 10, 2003

         OMAHA - (NYSE: NBP; NASDAQ: TCLP) - Northern Border Pipeline Company
announced today that it has received commitments from several entities for
transportation capacity, leaving approximately 11% of the total system capacity
expiring prior to November 1, 2003. These commitments are at the maximum rate
available under Northern Border's tariff, the majority of which are for terms of
one to two years, with a small amount of capacity extending up to ten years.

         "The success of the recontracting effort to date reinforces Northern
Border's ongoing stability of revenue and cash flow," said Bill Cordes, chairman
of the Northern Border Pipeline Management Committee. "We have been and remain
confident in our ability to recontract our available capacity based on the
favorable competitive position of the Northern Border system. Once again, the
shippers have confirmed the value of holding pipeline capacity between Canadian
supply areas and midwestern U.S. markets."

         Northern Border Pipeline Company is a general partnership that owns and
operates a 1,249-mile interstate pipeline that transported approximately 20
percent of all Canadian gas imported into the United States in 2002. Northern
Border Partners, L.P. (NYSE:NBP) owns a 70 percent general partner interest in
Northern Border Pipeline Company. The remaining 30 percent general partner
interest is owned by TC PipeLines, LP (Nasdaq: TCLP).



THIS PRESS RELEASE INCLUDES FORWARD-LOOKING STATEMENTS WITHIN THE MEANING OF
SECTION 27A OF THE SECURITIES ACT OF 1933 AND SECTION 21E OF THE SECURITIES
EXCHANGE ACT OF 1934. ALTHOUGH THE COMPANY BELIEVES THAT ITS EXPECTATIONS ARE
BASED ON REASONABLE ASSUMPTIONS, IT CAN GIVE NO ASSURANCE THAT SUCH EXPECTATIONS
WILL BE ACHIEVED. IMPORTANT FACTORS THAT COULD CAUSE ACTUAL RESULTS TO DIFFER
MATERIALLY FROM THOSE IN THE FORWARD-LOOKING STATEMENTS INCLUDE NATURAL GAS
DEVELOPMENT IN THE WESTERN CANADIAN SEDIMENTARY BASIN; COMPETITIVE CONDITIONS IN
THE OVERALL NATURAL GAS MARKETS; PERFORMANCE OF CONTRACTUAL OBLIGATIONS BY THE
SHIPPERS; OUR ABILITY TO MARKET PIPELINE CAPACITY ON FAVORABLE TERMS; AND THE
PRICE OF NATURAL GAS.