Flash is required to view this map.

To download the most current version of Flash please click here. The link will direct you to the Adobe Flash installer page in a new window.

TransCanada Third Quarter 2006 Teleconference and Webcast Advisory

CALGARY, Alberta – October 17, 2006 – (TSX: TRP) (NYSE: TRP) – TransCanada Corporation will release its third quarter 2006 financial results Tuesday, October 31, 2006.

Analysts, members of the media and other interested parties are invited to participate in a teleconference and webcast October 31 at 11 a.m. (Mountain) / 1 p.m. (Eastern) to discuss the third quarter 2006 financial results, and general developments and issues concerning the company.

To participate in the teleconference, please call 1-866-898-9626 or 416-340-2216 (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 (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) November 7, 2006. Please call 1-800-408-3053 or 416-695-5800 (Toronto area) and enter passcode 3201009. The webcast will be archived and available for replay on www.transcanada.com.

TransCanada is a leader in the responsible development and reliable operation of North American energy infrastructure. TransCanada’s network of more than 41,000 kilometres (25,600 miles) of pipeline transports the majority of Western Canada’s natural gas production to key Canadian and U.S. markets. A growing independent power producer, TransCanada owns, or has interests in, approximately 7,000 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.

- 30 -

For further information, please contact:

Media Inquiries:

TransCanada
Jennifer Varey/Shela Shapiro
(403) 920-7859 or Toll Free (800) 608-7859

Investor & Analyst Inquiries:

David Moneta/Myles Dougan
(403) 920-7911
(800) 361-6522 ext.7911