TransCanada and ExxonMobil to Host Alaska Pipeline Project Media Teleconference

ANCHORAGE, ALASKA--(Marketwire - June 11, 2009) - TransCanada Corporation (TSX:TRP) (NYSE:TRP) (TransCanada) and ExxonMobil will hold a teleconference with members of the media today at 12 noon Alaska Daylight Time (4 p.m. Eastern Daylight Time) to discuss today's announcement that TransCanada and ExxonMobil have reached an agreement to work together on an Alaska gas pipeline.

Media teleconference details are as follows:

When:

Thursday, June 11, 2009

12 noon, AKDT , 4 p.m. EDT

This call is expected to last 30 - 40 minutes.

Who:

Reporters are invited to ask questions of Tony Palmer, TransCanada vice-president of Alaska Development; Marty Massey, U.S. Joint Interest manager, ExxonMobil Production Company; and State of Alaska Commissioners Tom Irwin, Department of Natural Resources, and Patrick Galvin, Department of Revenue.

How:

Dial (877) 240-9772 or (416) 340-2216. Please dial in 10 minutes prior to the start of the call and state the event title "Alaska Pipeline Project Media Teleconference".

Post Teleconference:

A replay of the teleconference will be available two hours after the conclusion of the call until 8 p.m. AKDT (midnight EDT), June 18, 2009. Please call (800) 408-3053 and enter pass code 2405167#.

About TransCanada

With more than 50 years' experience, TransCanada is a leader in the responsible development and reliable operation of North American energy infrastructure including natural gas pipelines, power generation, gas storage facilities, and projects related to oil pipelines and LNG facilities. TransCanada's network of wholly owned pipelines extends more than 59,000 kilometres (36,500 miles), tapping into virtually all major gas supply basins in North America. TransCanada is one of the continent's largest providers of gas storage and related services with approximately 370 billion cubic feet of storage capacity. A growing independent power producer, TransCanada owns, or has interests in, over 10,900 megawatts of power generation in Canada and the United States. TransCanada's common shares trade on the Toronto and New York stock exchanges under the symbol TRP.

About ExxonMobil

ExxonMobil is the world's largest publicly traded international oil and gas company, providing energy that helps underpin growing economies and improves living standards around the world. ExxonMobil uses innovation and technology to deliver energy to a growing world. The company operates facilities or markets products in most of the world's countries and explores for oil and natural gas on six continents.

CONTACT INFORMATION

TransCanada
Media Inquiries
Cecily Dobson
(403) 920-7859 or (800) 608-7859
Website: www.transcanada.com
or
ExxonMobil
Media Inquiries
Margaret Ross
(713) 656-4376