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 portion of our supply.

 

Gas-fired power

PSE owns nine natural gas-fired power plants with a combined generating capacity of approximately 1,900 megawatts. The latest addition to the utility’s gas-fired fleet is the 270-megawatt Ferndale Generating Station. PSE acquired the Whatcom County facility in late 2012.

In addition to the Ferndale plant, we have gas-fired power-generating facilities in Pierce (Frederickson, with two facilities), Skagit (Fredonia), Cowlitz (Mint Farm) and Klickitat (Goldendale) counties, as well as three other plants (WhitehornEncogen and Sumas in Whatcom County.

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

PSE’s coal portfolio dropped by 307 MW to 393 MW in January 2020 when plant operator and co-owner Talen Energy closed Units 1 & 2 at the Colstrip Power Project in eastern Montana. PSE also recently sold its share of Colstrip Unit 4. We will continue to be one of five owners of Colstrip Unit 3.

Frederickson Thermal Plant