CALGARY, Alberta – May 24, 2018 – News Release – TransCanada Corporation (TSX, NYSE: TRP) (TransCanada) announced today that the National Energy Board (NEB) has recommended the federal government approve a variance to the previously issued North Montney Mainline Project certificate, which would allow construction to start on the proposed $1.4 billion natural gas project in northeast British Columbia.

Resources to learn more about the TC Energy Liquids business spinoff. Driving energy transition and supporting global energy security.

North Corridor Expansion Project - PPBoR - North Star Section 2.pdf

The document listed below in this Section and filed as Exhibit 99.1 to this Form 6-K is hereby filed with the Securities and Exchange Commission for the purpose of being and hereby is incorporated by reference into Registration Statement on Form F-9 (Reg. No. 333-121265) under the Securities Act of 1933, as amended.

What is a PIG? No, it isn’t a cute barnyard animal, pot-bellied pet, or potential dinner menu option. A PIG is a pipeline inspection gauge, and it is a critical part of keeping our pipelines operating safely.