North Coast transmission projects

Phase 3: North of Terrace Transmission

We're proposing to develop new transmission infrastructure from Skeena Substation near Terrace to Bob Quinn Substation to connect industrial customers who've advanced their request to interconnect to our system. The preliminary plan is to develop the new transmission lines and substations in two segments. We're in the early stages of planning the route, including considering the option to generally follow the Northwest Transmission Line corridor, where possible.

Prince Rupert to Ridley Island Transmission

We're proposing to develop a new transmission line from Rupert Substation to the Port of Prince Rupert, potentially to expand Rupert Substation and develop a new substation on or adjacent to port lands. This new infrastructure will enable us to respond to requests for more electricity from customers located in the Port of Prince Rupert.

Additional transmission system expansion past Terrace

Through our 2023 Expression of Interest (EOI) process existing and potential industrial customers shared their potential level, location and timing of demand in the North Coast. Based on these responses, further new transmission infrastructure may be needed south and west of Terrace. We continue to engage with current and potential customers and to review our existing infrastructure to help us understand what the existing infrastructure can handle and the type of new infrastructure that may be needed, including new transmission line and substation infrastructure.

What new infrastructure is needed will ultimately depend on which customer projects advance.

The Prince George to Terrace Capacitors Project (PGTC) is under construction. Through this project, we're building three new capacitor stations along the existing 500 kV lines from Williston Substation near Prince George to Skeena Substation near Terrace to allow more electricity to pass through these lines. PGTC is anticipated to be in service by 2028 and electricity to be provided by the project is already fully subscribed.

We're also undertaking the Northwest Substations Outage Mitigation project to mitigate potential outages by replacing equipment at Minette, Skeena, Glenannan, and Williston substations and working to interconnect customers to our system.

To support demand, we issued Calls for Power in 2024 and 2025. In December 2024, we awarded 10 electricity purchase agreements that will provide nearly 5,000 gigawatt-hours (GWh) per year, and in May 2026, we awarded four more that will provide about 3,500 gigawatt-hours (GWh) per year, of clean, renewable electricity to our grid.