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Canadian Mainline Capacity Management Open Season

March 14 - March 29, 2019

TransCanada PipeLines Limited’s ("TransCanada") Canadian Mainline pipeline system ("Mainline System") held  New Capacity Open Seasons from August 22, 2018 to September 21, 2018 and from October 15, 2018 to November 14, 2019 ("NCOS's"). TransCanada has executed Precedent Agreements for incremental FT Service that will require additional pipeline facilities and TBO Capacity in its Eastern Triangle ("Expansion Facilities").

This Capacity Management Open Season is being conducted by TransCanada to asses and potentially reduce the requirement for potential Expansion Facilities related to the NCOS's. Please see Capacity Management Open Season.

The Capacity Management Open Season will be open from March 14 - March 29, 2019. Bids must be received by TransCanada no later than 11:00 a.m. MST (Calgary time) on March 29, 2019. Paper bid forms can be found at the following links:

Request for Turnback, Other Options.


If you have any questions, please contact your Mainline Customer Account Manager.



Gordon Betts
Phone: 1.403.920.6834
Email: [email protected]

Michael Mazier
Phone: 1.403.920.2651
Email: [email protected]


Amelia Cheung
Phone: 1.416.869.2115
Email: [email protected]