Canadian Mainline Existing Capacity Open Season

July 25, 2025 to August 14, 2025

TransCanada PipeLines Limited's ("TCPL") Canadian Mainline pipeline system ("Mainline") is posting an Existing Capacity Open Season ("ECOS") for Firm Transportation (“FT”) capacity as determined by a recent operational reassessment and as per section 4.2 of the Transportation Access Procedures (“TAPs”). The System Segments offered in this ECOS and in the concurrent New Capacity Open Season (“NCOS”) that also commences July 25, 2025 and which closes August 14, 2025 at 8:00 a.m. Mountain Daylight Time (“MDT”) share common system capacity.

 

The deadline for submitting bids in this ECOS is 8:00 a.m. MT (Calgary time) Thursday, August 14, 2025.

 

For full details please see Existing Capacity Open Season

 

Questions 

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

 

Calgary
 

Kevin D’Souza
Phone: 1.403.920.7915
Email: kevin_dsouza@tcenergy.com

Kelsey Johannson

Phone: 1.587.933.5956
Email: kelsey_johannson@tcenergy.com

Goran Miljevic 

Phone:  1.403.920.5569 

Email:  goran_miljevic@tcenergy.com 

Larry D’Silva

Phone: 1.403.920.7476

Email: larry_dsilva@tcenergy.com

Jim Tran  

Phone:  1.403.920.5181 

Email:  jim_tran@tcenergy.com

Vanessa Swick

Phone:  1.587.432.8051

Email:  vanessa_swick@tcenergy.com

David Beekhuizen

Phone:  1.403.920.6979 

Email:  david_beekhuizen@tcenergy.com

 

Toronto

Amelia Cheung
Phone: 1.416.869.2115
Email: amelia_cheung@tcenergy.com

Tim Stringer
Phone: 1.416.869.2177
Email: tim_stringer@tcenergy.com

Rory Black
Phone: 1.437.518.2648
Email: rory_black@tcenergy.com

Chelsea Medcalfe 
Phone: 1.403.585.6702 
Email: chelsea_medcalfe@tcenergy.com  

Lisa Jamieson
Phone: 1.416.869.2171 
Email: lisa_jamieson@tcenergy.com