Frederickson Thermal Plant

Thermal Power

While hydropower makes up the largest share of electricity we provide to our customers, electricity from natural gas-fired and coal-fired power plants also represents a substantial portion of our supply.

Gas-fired power

PSE owns eight natural gas-fired power plants with a combined generating capacity of approximately 1,600 megawatts. The newest of these plants, acquired in 2008, is the 310-megawatt Mint Farm Generating Station in Longview in Cowlitz County.

In addition to the Mint Farm plant, we have gas-fired power-generating facilities in Pierce (Frederickson, with two facilities), Skagit (Fredonia), Klickitat (Goldendale), and Whatcom (Whitehorn, Encogen and Sumas) counties.

Gas-fired power is safe, requires no disposal or storage of dangerous wastes and emits far less carbon dioxide than other power resources that use fossil fuels.

Coal-fired power

The Colstrip Power Project in eastern Montana is the single largest power-generating facility that we own, providing approximately 700 megawatts of generating capacity.