Canadian Mainline Winter 2026/2027 Open Season for STFT

July 10, 2026

TransCanada's Canadian Mainline is currently posting Short Term Firm Transportation ("STFT") in this Short Term Capacity Open Season (the "Open Season") for a Winter 2026/2027 term.

TransCanada will be accepting bids for service that have a November 1, 2026 start and end March 31, 2027.  TransCanada will be accepting bids in the Short Term Firm Open Season until Tuesday, July 14, 2026 at 8:00 a.m. MT (Calgary time). TCPL will continue to evaluate opportunities for capacity, which will be offered in future open seasons, if available.

Please note, the 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, 2026 - March 31, 2027 (GJ/d)

Empress (4) to (Domestic)(3)

  

South Saskatchewan Delivery Area (SSDA)

121,616

Manitoba Delivery Area (MDA)

121,616

Western Delivery Area (WDA)

85,939

Northern Delivery Area (NDA)

85,939

Union ECDA

85,939

Enbridge CDA

85,939

Eastern Delivery Area (EDA)(2)

0

Eastern Delivery Area (Energir EDA)

0

Southwest Delivery Area (SWDA)

0

 

  

Empress(4) to (Export)

  
Emerson 1 121,616
Emerson 2 121,616
Kirkwall 0
Cornwall 0
Iroquois 0
Napierville 0
Philipsburg 0
East Hereford 0

 

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

Paths not listed in Table 2 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, 2026 - March 31, 2027 (GJ/d)

Dawn to

  
Kirkwall 0

 

  

Parkway to

  
Southwest Delivery Area (SWDA) 0
Points East of Parkway Maple Corridor 0

 

  

Sault Ste. Marie to

  
Union SSMDA 0
   

Kirkwall to

  
Union CDA 

79,458
Union SWDA 0

 

1 TransCanada is not accepting bids from export points unless otherwise listed in the tables above.
2 Capacity available to Enbridge EDA, Union EDA, and KPUC only.
3 Bayhurst 1, Herbert, Richmound, Shackleton, Success, Suffield 2, and Welwyn are also valid receipt points for the delivery points listed in Table 1, subject to metering capacity
4 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.

 

Open Season & Bidding Procedure Highlights

 

  • Bids must be received by TransCanada no later than 8:00 a.m. MT (Calgary time) Tuesday, July 14, 2026.
  • Term: November 1, 2026 to March 31, 2027. No partial period bids will be accepted.
  • 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.

 

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) Tuesday, July 14, 2026.

 

Questions

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

 

Calgary

 

Tyler Cook

Phone: 1.403.920.6021

Email: tyler_cook@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

 

Vanessa Swick

Phone: 1.403.920.6764

Email: vanessa_swick@tcenergy.com

 

Goran Miljevic

Phone: 1.403.920.5569

Email: goran_miljevic@tcenergy.com

 

Toronto

 

Amelia Cheung

Phone: 1.416.869.2115

Email: amelia_cheung@tcenergy.com

 

Rory Black

Phone: 1.416.869.2159

Email: rory_black@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