Canadian Mainline Winter 2024/2025 Open Season for STFT

April 9, 2024

TransCanada's Canadian Mainline is currently posting Short Term Firm Transportation ("STFT") service in this Short Term Capacity Open Season (the "Open Season") in the 2024/2025 Winter period. TransCanada will accept bids for service that have a November 1, 2024 start and end March 31, 2025. 

TransCanada will be accepting bids in this Open Season until 8:00 a.m. MST (Calgary time) each business day.

Please note, that a Mainline Rate Rider is not applicable for STFT. Bid floors are shown at Short Term Capacity: Bid Floors. The capacity available is located in the tables below.


Table 1: Available Short Term Capacity (GJ/d)(1) 

Paths not listed in Table 1 may have capacity available, please contact your Marketing Representative. Bid floors can be found at Short Term Capacity: Bid Floors.

Posted System Segments for STFT

November 1, 2024 - March 31, 2025


Empress (3) to (Domestic)(2)


Eastern Delivery Area (EDA)(4)


Empress(3) to (Export)(2)

Cornwall 14,450
Iroquois 14,450


1 TransCanada is not accepting bids from export points unless otherwise listed in the tables above.
2 Bayhurst 1, Herbert, Richmound, Shackleton, Success, Suffield 2 and Welwyn may also be valid receipt points for the delivery points listed in Table 1, subject to metering capacity. Please contact your Marketing Representative.
3 Customers and prospective customers are responsible for ensuring sufficient upstream and downstream capacity is available.

4 Capacity available to Enbridge EDA, Union EDA and KPUC EDA. For KPUC EDA, capacity available up to 4,958 GJ/d due to meter capacity limitations.  


Open Season & Bidding Procedure Highlights

  • Bids must be received by TransCanada no later than 8:00 a.m. MT (Calgary time) each business day
  • Term: November 1, 2024 to March 31, 2025
  • System Segment Capacity:
    • Some posted segments share common capacity.  A successful bid on one system segment may reduce the capacity on another system segment.
    • Any bids that pertain to common capacity will be evaluated together for allocation purposes.
    • Each capacity segment requested must be on an individual bid form
  • Conditional Bidding: STFT bids can be conditioned on another STFT bid
    • If an STFT bid is conditional on other STFT bids, and any of these STFT bids require a reduction to the maximum daily quantity, the maximum daily quantity for the other STFT bid will be reduced by the same percentage.
    • Please submit each set of conditional bids in a separate fax, to provide clarity on which bids are related.
  • Minimum Acceptable Quantity: May be specified by bidder in the event that prorating capacity is necessary
  • There are no Diversions, Alternate Receipt Points, or Renewal Rights with any STFT service
  • Transportation sales in the Daily Existing Capacity Open Season will affect the available capacity in this STFT Open Season
  •  Please note that the STFT bid floor percentage is applied only to the applicable Daily Demand Toll for FT service and not applied to abandonment surcharge or pressure charge or Mainline Rate Riders


How to Bid

Service applicants must submit a binding Short Term Transportation Contract, Exhibit "A" Addendum, Paper Version or Electronic Version, to TransCanada's Mainline Contracting Department by email at or by fax at 1.403.920.2309 no later than 8:00 a.m. MT (Calgary time) each business day.



If you have any questions, please contact your Marketing Representative.



Tyler Cook

Phone: 1.403.920.6021



Kevin D'Souza

Phone: 1.403.920.7915



Kelsey Johannson

Phone: 1.403.920.5956



Vanessa Swick

Phone: 1.403.920.6764



Goran Miljevic

Phone: 1.403.920.5569





Amelia Cheung

Phone: 1.416.869.2115



Rory Black

Phone: 1.416.869.2159



Chelsea Medcalfe

Phone: 1.416.869.2103



Tim Stringer

Phone: 1.416.869.2177