TC PipeLines, LP to Announce Second Quarter 2012 Financial Results and Cash Distribution on July 25

HOUSTON, TEXAS--(Marketwire - July 11, 2012) - TC PipeLines, LP (NYSE:TCP) (the Partnership) will release its second quarter 2012 financial results and cash distribution on Wednesday, July 25, 2012. Steve Becker, president of the general partner, will discuss the Partnership's financial results and latest developments in a teleconference and webcast on Wednesday, July 25 at 10 a.m. central daylight time (CDT)/11 a.m. eastern daylight time (EDT).

Analysts, members of the media and other interested parties are invited to participate by calling 866.226.1792. Please dial in 10 minutes prior to the start of the call. No pass code is required. A live webcast will also be available through the Partnership's website at www.tcpipelineslp.com. Slides for the conference call will be posted on the Partnership's website under "Event and Presentations" prior to the webcast.

A replay of the teleconference will also be available two hours after the conclusion of the call and until 11 p.m. (CDT) and midnight (EDT) on August 1, 2012, by calling 800.408.3053, then entering pass code 6220304.

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 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.