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Prices here are state averages across all utilities and rate plans, from the U.S. Energy Information Administration — not the rate on any one bill. Generation-mix figures are reported annually, not real time.

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Nuclear Power in Washington

Net generation and share of the state power mix, 2025 — U.S. Energy Information Administration.

Nuclear generation (2025)
7,748 thousand MWh
Share of state power mix
7.52%
National rank (nuclear output)
#26
U.S. average share
17.72%

Nuclear share of Washington's power mix over time

2001: 9.93%2025: 7.52%

Year by year

YearNuclear (thousand MWh)Share of state mix
20257,7487.52%
20249,9679.73%
20238,4358.19%
20229,8528.44%
20218,5117.68%
20209,4278.12%
20198,8678.33%
20189,7088.32%
20178,1287.01%
20169,6268.44%
20158,1617.47%
20149,4978.16%
20138,4617.41%
20129,3347.99%
20114,8064.17%
20109,2418.93%
20096,6346.35%
20089,2708.36%
20078,1097.58%
20069,3288.62%
20058,2428.08%
20048,9828.79%
20037,6157.61%
20029,0488.81%
20018,2509.93%

Source: U.S. Energy Information Administration, electric power operational data (net generation by state and energy source). "Share of state mix" is this fuel's net generation as a percentage of all in-state net generation.

Nuclear Power in Washington | EnergyAtlasUSA