Thermal power

We have a diversified supply of resources that make up our fuel mix including hydropower, wind, solar, storage and natural gas.

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 (Whitehorn, Encogen 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.

PSE removed all coal-fired generation from its electricity portfolio at the end of 2025 in accordance with Washington state law.