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) September 27, 2012

TC PipeLines, LP

(Exact name of registrant as specified in its charter)

Delaware	001-35358	52-2135448
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer  Identification No.)

717 Texas Street, Suite 2400 Houston, TX	77002-2761
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code (877) 290-2772

(Former name or former address if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨  Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨  Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨  Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 7.01  Regulation FD Disclosure.

On September 27, 2012, TC PipeLines, LP issued a press release announcing that Northern Border Pipeline Company (Northern Border) filed with the Federal Energy Regulatory Commission (FERC) a settlement with its customers to modify its transportation rates beginning in January 2013. A copy of the press release is attached as Exhibit 99.1 and is incorporated herein by reference.

Northern Border is a general partnership owned 50 percent by TC PipeLines, LP and 50 percent by ONEOK Partners, LP.

The information disclosed in this Item 7.01, including Exhibit 99.1 hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities under that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act except as expressly set forth by specific reference in such filing.

Item 9.01 Financial Statements and Exhibits.

(d)	Exhibits.
99.1	Press Release dated September 27, 2012.

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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 hereunto duly authorized.

TC PipeLines, LP

by:  TC PipeLines GP, Inc.,

its general partner

By: /s/Annie C. Belecki

      Annie C. Belecki

      Secretary

Date:  September 27, 2012

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EXHIBIT INDEX

Exhibit No.	Description
99.1	Press Release dated September 27, 2012.

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EX-99.1

EXHIBIT 99.1

NewsRelease  

TC PipeLines, LP Announces Northern Border

Rate Case Settlement

HOUSTON, Texas – September 27 , 2012 –TC PipeLines, LP (NYSE: TCP) (the Partnership) today announced that Northern Border Pipeline Company (Northern Border) filed with the Federal Energy Regulatory Commission (FERC) a settlement with its customers to modify its transportation rates beginning in January 2013.  The settlement is expected to be approved by the FERC before the end of the year.

The settlement establishes maximum long-term transportation rates and charges on the Northern Border system. Commencing in January 2013, Northern Border’s rates will be reduced compared to current rates by approximately 11 percent. The settlement includes a three-year moratorium on filing rate cases or challenging the settlement rates, and requires that Northern Border file for new rates no later than January 1, 2018.  There are no other major changes to Northern Border’s services as a result of the settlement.

“Northern Border was obligated to file a rate case before the end of the year under the terms of its 2006 settlement and we are pleased to have reached this settlement agreement,” said Steve Becker, president of TC PipeLines, GP, Inc.  “Although Northern Border’s revenues will decrease beginning in January 2013, the settlement provides rate certainty for up to five years.”

Northern Border is a general partnership owned 50 percent by TC PipeLines, LP and 50 percent by ONEOK Partners, LP.  It is operated by a subsidiary of TransCanada Corporation, the parent of the Partnership’s General Partner.

TC PipeLines, LP (NYSE: TCP) has interests in over 5,550 miles of federally regulated U.S. interstate natural gas pipelines which serve markets across the United States and Eastern Canada. This includes significant interests in Great Lakes Gas Transmission Limited Partnership and Northern Border Pipeline Company as well as a 25 percent ownership interest in each of Gas Transmission Northwest LLC, and Bison Pipeline LLC. TC PipeLines, LP also has 100 percent ownership of North Baja Pipeline, LLC and Tuscarora Gas Transmission Company. TC PipeLines, LP is managed by its General Partner, TC PipeLines GP, Inc., an indirect wholly owned subsidiary of TransCanada Corporation (NYSE: TRP). TC PipeLines GP, Inc. also holds common units of TC PipeLines, LP.  For more information about TC PipeLines, LP, visit the Partnership’s website at www.tcpipelineslp.com.

ONEOK Partners, L.P. (pronounced ONE-OAK) (NYSE: OKS) is one of the largest publicly traded master limited partnerships, and is a leader in the gathering, processing, storage and transportation of natural gas in the U.S. and owns one of the nation’s premier natural gas liquids (NGL) systems, connecting NGL supply in the Mid-Continent and Rocky Mountain regions with key market centers.  Its general partner is a wholly owned subsidiary of ONEOK, Inc. (NYSE: OKE), a diversified energy company, which owns 43.4 percent of the overall partnership interest.  ONEOK is one of the largest natural gas distributors in the United States, and its energy services operation focuses primarily on marketing natural gas and related services throughout the U.S.  For more information, visit the website at www.oneokpartners.com.

Cautionary Statement Regarding Forward-Looking Information

This news release contains forward-looking statements regarding expectations of future events and results.  TC PipeLines, LP believes that these statements are based on reasonable assumptions made with current and complete information but there is no guarantee that expectations of future results will be achieved.  These expectations are subject to a number of risks and uncertainties.  Important factors that could cause actual results to differ materially from those expressed or implied in this release are described in Part 1, Item 1A. Risk Factors of TC PipeLines, LP’s Annual Report on Form 10-K filed with the Securities and Exchange Commission (SEC), copies of which are available to the public over the Internet at the SEC’s website (www.sec.gov) and at TC PipeLines, LP’s website (www.tcpipelineslp.com).  TC PipeLines, LP disclaims any intention or obligation to publicly update or revise any forward-looking statements to account for new information, future results or any other reason.

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Media Inquiries:	Shawn Howard/Grady Semmens	403.920.7859
Unitholder and Analyst Inquiries:	Lee Evans	877.290.2772 investor_relations@tcpipelineslp.com