Summary of Electricity Activity in King County, WA

Summary of King County, WA Generation

King County, WA is ranked #1,090 out of 2,154 U.S. counties nationwide and #25 out of 31 Washington counties in terms of total annual net electricity generation.

Annual Generation 365.6 GWh
Annual Consumption 3.2 M MMBtu
Last UpdateMay 2025
Power Plants12
Companies on File9

Map of Top Producing Plants in King County, WA

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Overall National Rank

#1,090 /2,154 U.S. Counties

In Net Annual Generation

Overall State Rank

#25 /31 Washington Counties

In Net Annual Generation

Overall Annual Net Geneneration

365.6 GWh

Total Annual Fuel Consumption

3.2 M MMBtu

Electric Companies in King County, WA

9

King County, WA
Power Plants

12

Annual Net Generation From hydroelectric power

351.5 GWh

National Rank in Terms of hydroelectric Net Electricity Generation

#128 /546 U.S. Counties

State Rank in Terms of hydroelectric Net Electricity Generation

#15 /26 Washington Counties

Monthly Net Generation for King County, WA

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Net Generation by Fuel Source

Water
Other Biomass Gas
Natural Gas
Distillate Fuel Oil
96.1%

Net Generation by Fuel Source Breakdown

State RankNational RankGenerationFuel Consumption
All#25 / 31#1090 / 2154365.57 GWh3.17 M MMBtu
Water#15 / 26#128 / 546351.47 GWh1.50 M MMBtu
Other Biomass Gas#1 / 1#24 / 539.57 GWh111.67 k MMBtu
Natural Gas#11 / 13#800 / 9264.33 GWh1.55 M MMBtu
Distillate Fuel Oil#5 / 7#464 / 736194.78 MWh2.98 k MMBtu

Power Plants in King County, WA

PlantUtility NameGenerationConsumptionFuel Types
Snoqualmie 2Puget Sound Energy Inc108.9 GWh596.0 k MMBtu Water
SnoqualmiePuget Sound Energy Inc65.9 GWh249.6 k MMBtu Water
Twin Falls HydroCentral Rivers Power US, LLC62.9 GWh240.8 k MMBtu Water
South Fork ToltCity of Seattle - (WA)44.6 GWh155.6 k MMBtu Water
Hancock Creek Hydroelectric ProjectPUD No 1 of Snohomish County23.0 GWh86.9 k MMBtu Water
Calligan Creek Hydroelectric ProjectPUD No 1 of Snohomish County17.2 GWh64.8 k MMBtu Water
Weeks FallsEagle Creek Renewable Energy, LLC13.1 GWh49.3 k MMBtu Water
Black CreekBlack Creek Hydro Inc9.7 GWh36.7 k MMBtu Water
West Point Treatment PlantKing County Dept-Natural Res9.6 GWh111.7 k MMBtu Other Biomass Gas
Cedar Falls (WA)City of Seattle - (WA)6.2 GWh23.2 k MMBtu Water
University of Washington Power PlantUniversity of Washington4.4 GWh1.5 M MMBtu Natural Gas : 97.4% Distillate Fuel Oil : 2.6%
Cedar HillsBio Energy Washington, LLC78.0 MWh8.1 k MMBtu Distillate Fuel Oil

Electricity Generation for Neighboring Counties

National RankCountyNet Generation# Power Plants
#77Chelan County11.5 TWh5
#1738Jefferson County26.8 GWh3
#653Kittitas County1.2 TWh9
#182Lewis County7.3 TWh8
#1150Mason County304.6 GWh3
#455Pierce County2.4 TWh14
#552Skagit County1.7 TWh4
#1053Snohomish County401.9 GWh9
#1027Thurston County430.4 GWh4
#1372Yakima County140.2 GWh12

* Net Generation data is based on the last 12 months since May 2025

Electricity Generation for Cities Located in King County, WA

State RankCityNet Generation# Power Plants
#82Maple Valley, WA78.0 MWh1
#53North Bend, WA126.9 GWh4
#70Seattle, WA14.0 GWh2
#48Snoqualmie, WA224.6 GWh5

* Net Generation data is based on the last 12 months since May 2025