Glenannan to Terrace Transmission Project

Demand is growing from customers in the North Coast area for clean, reliable power to support electrifying their operations to reduce greenhouse gas emissions.

The current 500 kV transmission infrastructure from Williston Substation near Prince George to Skeena Substation near Terrace is reaching its capacity limit and electricity from the Prince George to Terrace Capacitors project, which is currently under construction, is already fully subscribed. We need to expand our transmission system to meet projected demand.

We're planning to add new transmission lines and associated infrastructure from Glenannan Substation to Skeena Substation:

• An approximately 130 km line from Glenannan to Telkwa substation, and
• An approximately 145 km line from Telkwa substation to Skeena substation.
• Expanding Skeena Substation to accommodate required equipment.
• Expanding Palling and Walcott capacitor stations (CAP 2 and 3) to allow the line to carry more electricity reliably.

North Coast Electrification project map

Select the map [PDF, 1.7 MB] to view it at a larger size.

This project is part of the North Coast electrification initiative which also includes the Prince George to Glenannan Transmission (PGGT), Prince George to Terrace Capacitors and Northwest Substation Outage Mitigation projects, thermal upgrades to the existing 500 kV lines from Williston Substation to Skeena Substation, potential new transmission infrastructure north, south and west of Terrace and customer interconnection projects.

We've identified a route corridor shown in the figures below and are working to identify route options where the new transmission line cannot parallel existing lines between Telkwa Substation and Skeena Substation.

Glenannan Substation to Telkwa Substation

The proposed transmission line routes in this area will generally parallel the existing transmission lines on the north side of the lines.

Select the map [PDF, 3.2 MB] to view it at a larger size.

Telkwa Substation to Skeena Substation

The proposed transmission line routes in this section have not been determined. They may be north or south of the existing line and may deviate from the existing lines in certain areas.

Select the map [PDF, 2.7 MB] to view it at a larger size.

In March 2024, we’re hosting virtual and in-person open houses in Houston, Smithers, Terrace, and Fraser Lake. See the top of the page for details. We’ll post the presentation materials here afterwards.

Early engagement with our Indigenous partners is also underway, and this aligns with our commitment to co-design the environmental review and explore Indigenous co-ownership of the proposed new transmission lines, as well other means of Indigenous participation.

In May 2023 we held open houses in Terrace, Smithers, Burns Lake and Fraser Lake to introduce North Coast electrification, including the GTTT project. We had a good turnout at the open houses and received feedback on what we should consider when looking at routing options, which we're considering in the development of the route and options.

Feel free to contact us at any time to discuss or provide feedback about the GTTT project, including the routes under consideration.

We look forward to discussing our plans with you.