Seattle's Electricity Sources: Hydro, Wind, Solar, and Natural Gas

Seattle City Light, the public utility, serves Seattle and parts of seven adjacent cities in King County. It is the 10th largest public utility in the US, with over 1 million customers.

Primary Source: Hydropower (75%)

12 hydroelectric dams on the Skagit and Snoqualmie Rivers provide over 1,100 MW capacity.

Other Renewables

• Wind: Two wind farms in Kittitas County (202 MW total).
• Solar: Several Puget Sound solar farms (25 MW total).

Natural Gas

Two gas-fired plants in Seattle (600+ MW) meet peak winter demand.

The utility aims to increase renewable generation and reduce fossil fuel reliance.