TransCanada Annual Meeting of Shareholders and First Quarter 2009 Teleconference and Webcast Advisory

CALGARY, ALBERTA--(Marketwire - April 21, 2009) - TransCanada Corporation (TransCanada) (TSX:TRP) (NYSE:TRP) TransCanada will hold its Annual Meeting of Shareholders beginning at 10:00 a.m. (Mountain) / 12:00 p.m. (Eastern) on Friday, May 1, 2009. The meeting will take place at the Roundup Centre in Calgary, Alberta.

A live webcast of the meeting will be available on TransCanada's website at www.transcanada.com beginning at 10:00 a.m. (Mountain) / 12:00 p.m. (Eastern). The meeting webcast will be archived and available for replay.

TransCanada will release its first quarter 2009 financial results on the morning of Friday, May 1, 2009. Analysts, members of the media and other interested parties are invited to participate in a teleconference and webcast May 1 at 1:00 p.m. (Mountain) / 3:00 p.m. (Eastern) to discuss the first quarter 2009 financial results, and general developments and issues concerning the company.

To participate in the teleconference, please call (866) 225-6564 or (416) 641-6136 (Toronto area). Please dial in 10 minutes prior to the start of the call. No pass code is required. A live webcast of the teleconference will also be available on TransCanada's website at www.transcanada.com.

The conference will begin with a short address by members of TransCanada's executive management, followed by a question and answer period for investment analysts. A question and answer period for members of the media will immediately follow.

A replay of the teleconference will be available two hours after the conclusion of the call until midnight (Eastern) May 8, 2009. Please call (800) 408-3053 or (416) 695-5800 (Toronto area) and enter pass code 7161763#. The webcast will be archived and available for replay at www.transcanada.com.

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.

TransCanada
Media Inquiries
Cecily Dobson
(403) 920-7859 or (800) 608-7859
or
Investor & Analyst Inquiries
David Moneta/Myles Dougan/Terry Hook
(403) 920-7911 or (800) 361-6522
Website: www.transcanada.com