Canadian Mainline Winter 2025/2026 Open Season for STFT

 July 30, 2025

TransCanada's Canadian Mainline is currently posting Short Term Firm Transportation ("STFT") in this Short Term Capacity Open Season (the "Open Season") for December 1, 2025 to April 30, 2026 and December 1, 2025 to March 31, 2026 terms only. TransCanada will be accepting bids in the Short Term Firm Open Season each business day.  

Please note, capacities listed in this STFT Open Season are incremental to the capacity amounts being offered in the July 25, 2025 to August 14, 2025 Existing Capacity Open Season ("ECOS") and in the concurrent New Capacity Open Season (“NCOS”). Therefore, awarded capacity from this STFT Open Season would not change the amount offered in the ECOS or NCOS Open Seasons. 

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

Table 1: Available Short Term Capacity (GJ/d)(1)(2) 

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 December 1, 2025 - March 31, 2026 (GJ/d) December 1, 2025 - April 30, 2026 (GJ/d)

Empress (3) to (Domestic)

    

South Saskatchewan Delivery Area (SSDA)

253,289

 0

Manitoba Delivery Area (MDA)

253,289

 0

Western Delivery Area (WDA)

25,441

 0

Northern Delivery Area (NDA) and North Bay Junction

25,441

 0

Central Delivery Area (CDA)(4)

25,441

 0

Eastern Delivery Area (EDA)(5)

0

 0

Eastern Delivery Area (Energir EDA)

0

 0

Southwest Delivery Area (SWDA)

0

 0

 

    

Empress (3) to (Export)

    
Emerson 1 253,289 0
Emerson 2 253,289 0
Iroquois 0 0
Cornwall 0 0
Napierville 0 0
Philipsburg 0 0
East Hereford 0 0

 

1 The paths above contain shared capacity, and as such, the capacity available for one path or term block may be impacted by bids to another path sharing the same capacity.
2 TransCanada does not accept bids from export points unless otherwise listed in the tables above.
3 Customers and prospective customers should be aware that TransCanada has posted firm capacity from Empress that may be in excess of the upstream delivery capacity on Nova Gas Transmission Ltd. (NGTL). It is the responsibility of customers to ensure upstream capacity is available. 
4 Capacity available to Union NCDA, Enbridge CDA, Union Parkway Belt, and Union ECDA only.
5 Capacity available to Enbridge EDA, Union EDA, and subject to metering capacity KPUC EDA.  

 

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: December 1, 2025, to March 31, 2026 and December 1, 2025, to April 30, 2026
  • 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
  •  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.

 

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 mainline_contracting@tcenergy.com or by fax at 1.403.920.2309 and must be received by 8:00 a.m. MT (Calgary time) each business day.

 

Questions

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

 

Calgary

 

David Beekhuizen 

Phone: 1.403.920.6979  

Email:  david_beekhuizen@tcenergy.com

 

Tyler Cook

Phone: 1.403.920.6021

Email: tyler_cook@tcenergy.com

 

Larry D’Silva 

Phone: 1.403.920.7476 

Email: larry_dsilva@tcenergy.com 

 

Kevin D'Souza

Phone: 1.403.920.7915

Email: kevin_dsouza@tcenergy.com

 

Kelsey Johannson

Phone: 1.403.920.5956

Email: kelsey_johannson@tcenergy.com

 

Goran Miljevic

Phone: 1.403.920.5569

Email: goran_miljevic@tcenergy.com

 

Vanessa Swick

Phone: 1.403.920.6764

Email: vanessa_swick@tcenergy.com

 

 

Toronto

 

Rory Black

Phone: 1.416.869.2159

Email: rory_black@tcenergy.com

 

Amelia Cheung

Phone: 1.416.869.2115

Email: amelia_cheung@tcenergy.com

 

Chelsea Medcalfe

Phone: 1.416.869.2103

Email: chelsea_medcalfe@tcenergy.com

 

Lisa Jamieson

Phone: 1.416.869.2171

Email: lisa_jamieson@tcenergy.com

 

Tim Stringer

Phone: 1.416.869.2177

Email: tim_stringer@tcenergy.com