CALGARY, ALBERTA--(Marketwired - Sept. 6, 2017) - Media Advisory - TransCanada Corporation (TSX:TRP)(NYSE:TRP) (TransCanada) today announced an extension of the Keystone System Open Season to October 26, 2017 due to the historic flooding and catastrophic impacts to Houston and parts of the U.S. Gulf Coast.

The Open Season, which was launched on July 27, 2017, is to solicit additional binding commitments from interested parties for transportation of crude oil on the Keystone Pipeline and for the Keystone XL Pipeline Project from Hardisty, Alberta to markets in Cushing, Oklahoma, and the U.S. Gulf Coast.

Interested parties may submit binding bids for transportation capacity during the Open Season that will close at 12 p.m. MT on October 26, 2017. Shipper information regarding the Open Season is available by contacting:

With more than 65 years' experience, TransCanada is a leader in the responsible development and reliable operation of North American energy infrastructure including natural gas and liquids pipelines, power generation and gas storage facilities. TransCanada operates a network of natural gas pipelines that extends more than 91,500 kilometres (56,900 miles), tapping into virtually all major gas supply basins in North America. TransCanada is the continent's leading provider of gas storage and related services with 653 billion cubic feet of storage capacity. A large independent power producer, TransCanada currently owns or has interests in approximately 6,200 megawatts of power generation in Canada and the United States. TransCanada is also the developer and operator of one of North America's leading liquids pipeline systems that extends over 4,300 kilometres (2,700 miles), connecting growing continental oil supplies to key markets and refineries. TransCanada's common shares trade on the Toronto and New York stock exchanges under the symbol TRP. Visit TransCanada.com to learn more, or connect with us on social media and 3BL Media.