The Site C Clean Energy Project (Site C) is the third dam and hydroelectric generating station on the Peace River in northeastern British Columbia.

Site C provides 1,100 megawatts (MW) and 1,230 MW of installed capacity and produces about 5,100 gigawatt hours (GWh) of electricity each year – enough energy to reliably power the equivalent of 500,000 homes per year in British Columbia.

In December 2014, the Site C project received approval from the provincial government to proceed to construction.

This decision followed a rigorous and independent environmental assessment by the federal and provincial governments, which included a Joint Review Panel process. The conclusion of the three-year environmental review was that the effects of the Site C project are justified by the long-term benefits it will provide

Construction started in summer 2015, and came into full operation in summer 2025.

Site C will be a source of reliable, clean power for more than 100 years.
 

The project design for the Site C Clean Energy Project includes the following key components:

• Access roads in the vicinity of the site and a temporary construction access bridge across the Peace River at the dam site.
• Construction of two temporary cofferdams across the main river channel to allow for construction of the earthfill dam.
• Worker accommodation at the dam site, with other workers being housed off site and in the region.
• The realignment of six segments of Highway 29 over a total distance of 30 kilometres.
• Shoreline protection at Hudson's Hope.
• Two new 500 kilovolt AC transmission lines that will connect the Site C facilities to the existing Peace Canyon Substation, along an existing right-of-way.
• An 800-metre roller-compacted-concrete buttress to enhance seismic protection.
• An earthfill dam, approximately 1,050 metres long and 60 metres high above the riverbed.
• A generating station with six 183 MW generating units.
• An 83-kilometre-long reservoir that will be, on average, two to three times the width of the current river.

Our long-term energy planning process has found that Site C provides the best combination of financial, technical, environmental and economic development attributes compared to other electricity-generation options.

The Site C project provides key benefits for B.C., including energy, dependable capacity and flexibility, regional economic development, job creation, and benefits communities and Indigenous Nations.