Canadian Mainline Summer 2026 Open Season For STFT

March 19, 2026

TransCanada's Canadian Mainline is currently posting Short Term Firm Transportation ("STFT") service in this Short Term Capacity Open Season (the "Open Season") for an April 1, 2026 to June 30, 2026 term. See Table 1.

Additionally, TransCanada will accept individual monthly block bids for the 2026 Summer season (April 1, 2026 - October 31, 2026). See Tables 2, 3, and 4. 

Please note, Table 1 is not additive to the capacities in Table 2.

TransCanada will be accepting bids in this Short Term Firm Open Season until 8:00 a.m. MT (Calgary time) Tuesday, March 24, 2026. Evaluation is ongoing and as further information becomes available, we may offer incremental capacity. 

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) - Summer 2026(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 Segment for STFT April 1, 2026 - June 30, 2026

Empress(4)(5) to 
Eastern Delivery Area (EDA)(2) 36,927
Iroquois 36,927
Cornwall 36,927
North Bay Junction 36,927

 

Table 2: Available Short Term Capacity (GJ/d) - Summer 2026(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 Segment for STFT April May June July August September October

Empress(4)(5) to (Domestic)
South Saskatchewan Delivery Area (SSDA) 417,000 279,000 173,000 78,000 0 127,000 202,000
Manitoba Delivery Area (MDA) 417,000 279,000 173,000 78,000 0 127,000 202,000
Western Delivery Area (WDA) 143,000 36,927 107,000 0 0 36,927 0
Northern Delivery Area (NDA) 143,000 36,927 107,000 0 0 36,927 0
North Bay Junction 143,000 36,927 107,000 0 0 36,927 0
Enbridge CDA 0 0 0 0 0 0 0
Union ECDA 0 0 0 0 0 0 0
Eastern Delivery Area (EDA)(2) 98,020 36,927 107,000 0 0 36,927 0
Eastern Delivery Area (Energir EDA) 0 0 0 0 0 0 0
Southwest Delivery Area (SWDA) 0 0 0 0 0 0 0

Empress(4)(5) to (Export)
Emerson 1 417,000 279,000 173,000 78,000 0 127,000 202,000
Emerson 2 417,000 279,000 173,000 78,000 0 127,000 202,000
Kirkwall 0 0 0 0 0 0 0
Niagara 0 0 0 0 0 0 0
Chippawa 0 0 0 0 0 0 0
Cornwall 89,454 36,927 99,754 0 0 36,927 0
Iroquois 98,020 36,927 107,000 0 0 36,927 0
Napierville 0 0 0 0 0 0 0
Philipsburg 0 0 0 0 0 0 0
East Hereford 0 0 0 0 0 0 0

 

Table 3: Available Short Term Capacity (GJ/d) - Summer 2026(1)

Paths not listed in Table 3 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

Individual Months Between

April 1, 2026 - October 31, 2026

Dawn to
Kirkwall 0

Parkway to
Union ECDA 130,372
Southwest Delivery Area (SWDA) 0

Sault Ste. Marie to
Union SSMDA 35,022

Kirkwall to
Union CDA 84,058
Union SWDA 0

 

Table 4: Available Short Term Capacity (GJ/d) - Summer 2026(1)

The System Segments listed below with a receipt point of Emerson 2 are limited as a result of physical receipt capability, and segment capacity is contingent on downstream capacity. Paths not listed in Table 4 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

Individual Months Between

April 1, 2026 - October 31, 2026 (GJ/d)

Emerson 2

South Saskatchewan Delivery Area (SSDA) and Manitoba Delivery Area (MDA) (3)

 215,614


1 TransCanada is not accepting bids from export points unless otherwise listed in the tables above.

2 Capacity available to Enbridge EDA, Union EDA, but KPUC EDA is limited to 4,958 GJ of metering capacity.  

3 Delivery capacity subject to downstream capacity, please contact your Marketing Representative.

4 Bayhurst 1, Herbert, Whitewood Receipt, Richmound, Shackleton, Success, Suffield 2, and Welwyn are also valid receipt points for the delivery points listed in Table 1.

5 Customers and prospective customers are responsible for ensuring sufficient upstream and downstream capacity is available.

Open Season & Bidding Procedure Highlights

  • Bids must be received by TransCanada no later than 8:00 a.m. MST (Calgary time) Tuesday, March 24, 2026
  • Term for Table 1: April 1, 2026 to June 30, 2026
  • Term for Table 2 - 4: April 1, 2026 to October 31, 2026 individual monthly blocks.
  • 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 the Rate Riders, 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. MST (Calgary time) Tuesday, March 24, 2026 

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

 

Jim Tran

Phone: 1.403.920.5181

Email: jim_tran@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