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Washington   Washington Profile

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Quick Facts

  • The Grand Coulee Dam on Washington's Columbia River is the largest hydroelectric power plant in the United States by generation capacity, and can provide electricity to 2.3 million households a year.
  • Washington is the top U.S. producer of electricity from hydroelectric sources and routinely accounts for 25% of the nation's annual utility-scale net hydroelectricity generation.
  • Although not a crude oil producing state, Washington has the fifth largest U.S. oil refining capacity for making petroleum products with the ability to process 638,000 barrels of oil a day at the state's five refineries. 
  • Just over one-half of Washington households rely on electricity as their primary heating fuel and one-third of households depend on natural gas.
  • Because of the relatively low operating costs of hydroelectric power generation, Washington had the nation’s second lowest average retail electricity price, after Louisiana, in 2017.

Last Updated: November 15, 2018

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