TC PipeLines, LP Second Quarter 2009 TeleConference and Webcast Advisory

OMAHA, NEBRASKA--(Marketwire - July 21, 2009) - TC PipeLines, LP (NASDAQ:TCLP) (the Partnership) will hold a teleconference and webcast on Thursday, July 30, 2009 to discuss its 2009 second quarter financial results.

Mark Zimmerman, president of the general partner, will discuss the second quarter 2009 financial results and general developments and issues concerning the Partnership before opening the call to questions from analysts, members of the media and other interested parties.


TC Pipelines, LP second quarter 2009 financial results teleconference and webcast


Thursday, July 30, 2009


1:30 p.m., central daylight time (CDT) / 2:30 p.m. eastern daylight time (EDT)


To participate in the teleconference, please call (866) 225-0198. Please dial in 10 minutes prior to the start of the call. No pass code is required. A live webcast of the conference call will also be available through the Partnership's website at An audio replay of the call will be maintained on the website.

A replay of the conference call will also be available two hours after the conclusion of the call and until 11:00 p.m. (CDT) and midnight (EDT), Thursday, August 6, 2009, by dialing (800) 408-3053, then entering pass code 6521618#.

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

TC PipeLines, LP
Media Inquiries:
Cecily Dobson/Terry Cunha
(403) 920-7859 or (800) 608-7859
TC PipeLines, LP
Unitholder and Analyst Inquiries:
Terry Hook
(877) 290-2772

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