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 14, 2009

TC PipeLines, LP

(Exact name of registrant as specified in its charter)

Delaware	000-26091	52-2135448
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer  Identification No.)

13710 FNB Parkway Omaha, Nebraska	68154-5200
(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 14, 2009, TC PipeLines, L.P. issued a media advisory announcing that the Partnership will present at the 2009 Master Limited Partnership Investor Conference.  Mark Zimmerman, president of the general partner, will present an overview of the Partnership's business, commencing at approximately 11:15 a.m. Eastern Time on Thursday, September 17, 2009. A copy of the media advisory is furnished with this report as Exhibit 99.1, and is incorporated herein by reference.

In accordance with General Instruction B.2. of Form 8-K, the information in this Item 7.01 and Exhibit 99.1 hereto are being furnished and are not deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and are not otherwise subject to the liabilities of that section. Accordingly, the information in this Item 7.01 and Exhibit 99.1 hereto will not be incorporated by reference into any filing made by the Partnership under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, unless specifically identified therein as being incorporated therein by reference.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.  

99.1 Media Advisory dated September 14, 2009.

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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

Assistant Secretary

Dated:  September 14, 2009

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EX-99.1

Exhibit 99.1

MediaAdvisory

TC PipeLines, LP to Present at the 2009

Master Limited Partnership Investor Conference

OMAHA, Nebraska – September 14, 2009 – TC PipeLines, LP (Nasdaq: TCLP) (The Partnership) will present at the 2009 Master Limited Partnership Investor Conference. Mark Zimmerman, president of the general partner, will present an overview of the Partnership's business, commencing at approximately 11:15 a.m. Eastern Time on Thursday, September 17, 2009.

The event, hosted by the National Association of Publicly Traded Partnerships, will take place September 16-17, 2009 at the Hyatt Regency in Greenwich, Connecticut.

The presentation will be webcast live and be available for replay via the Partnership's website at www.tcpipelineslp.com. The presentation handout will be available on the Partnership's website after 6 p.m. Eastern on September 16, 2009.

TC PipeLines, LP has interests in approximately 3,700 miles of federally regulated U.S. interstate natural gas pipelines, including Great Lakes Gas Transmission Limited Partnership (46.45 per cent ownership), Northern Border Pipeline Company (50 per cent ownership), Tuscarora Gas Transmission Company (100 per cent ownership) and North Baja Pipeline, LLC (100 per cent ownership). Great Lakes is a 2,115-mile pipeline serving markets in Minnesota, Wisconsin, Michigan and eastern Canada. The 1,249-mile Northern Border Pipeline transports natural gas from the Montana-Saskatchewan border to markets in the midwestern United States. Tuscarora owns a 240-mile pipeline system that transports natural gas from Oregon, where it interconnects TransCanada’s Gas Transmission Northwest System, to markets in Oregon, Northern California, and Northwestern Nevada. North Baja is an 80-mile natural gas pipeline that extends from Southwestern Arizona to a point on the California/Mexico border and connects with a natural gas pipeline system in Mexico. TC PipeLines, LP is managed by its general partner, TC PipeLines GP, Inc., an indirect wholly owned subsidiary of TransCanada Corporation. TC PipeLines GP, Inc. also holds common units of TC PipeLines, LP. Common units of TC PipeLines, LP are quoted on the NASDAQ Stock Market and trade under the symbol “TCLP.” For more information about TC PipeLines, LP, visit the Partnership’s website at www.tcpipelineslp.com.

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Media Inquiries:	Cecily Dobson/Terry Cunha	(403) 920-7859 (800) 608-7859
Unitholder and Analyst Inquiries:	Terry Hook	(877) 290-2772 investor_relations@tcpipelineslp.com