Summary of Electricity Activity in King County, WA

Summary of King County, WA Generation

King County, WA is ranked #1,117 out of 2,200 U.S. counties nationwide and #24 out of 30 Washington counties in terms of total annual net electricity generation.

Annual Generation	392.2 GWh
Annual Consumption	3.1 M MMBtu
Last Update	Aug 2026
Power Plants	12
Companies on File	9

Map of Top Producing Plants in King County, WA

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Overall National Rank

#1,117 /2,200 U.S. Counties

In Net Annual Generation

Overall State Rank

#24 /30 Washington Counties

In Net Annual Generation

Overall Annual Net Geneneration

392.2 GWh

Total Annual Fuel Consumption

3.1 M MMBtu

Electric Companies in King County, WA

King County, WA
Power Plants

Annual Net Generation From hydroelectric power

377.7 GWh

National Rank in Terms of hydroelectric Net Electricity Generation

#113 /538 U.S. Counties

State Rank in Terms of hydroelectric Net Electricity Generation

#14 /26 Washington Counties

Monthly Net Generation for King County, WA

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Monthly Plant Fuel Consumption for King County, WA

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Net Generation by Fuel Source

Net Generation by Fuel Source Breakdown

	State Rank	National Rank	Generation	Fuel Consumption
All	#24 / 30	#1117 / 2200	392.21 GWh	3.07 M MMBtu
Water	#14 / 26	#113 / 538	377.70 GWh	1.46 M MMBtu
Other Biomass Gas	#1 / 1	#16 / 52	14.34 GWh	163.90 k MMBtu
Distillate Fuel Oil	#5 / 6	#530 / 742	132.66 MWh	7.30 k MMBtu
Landfill Gas	#2 / 2	#238 / 240	45.78 MWh	37.34 k MMBtu

* Data is based on 12 months since Dec 2025.

Power Plants in King County, WA

Plant	Utility Name	Generation	Consumption	Fuel Types
Snoqualmie 2	Puget Sound Energy Inc	106.8 GWh	425.3 k MMBtu	Water
Twin Falls Hydro	Central Rivers Power US, LLC	59.3 GWh	230.4 k MMBtu	Water
Snoqualmie	Puget Sound Energy Inc	59.2 GWh	225.4 k MMBtu	Water
Cedar Falls (WA)	City of Seattle - (WA)	53.6 GWh	206.3 k MMBtu	Water
South Fork Tolt	City of Seattle - (WA)	48.6 GWh	176.6 k MMBtu	Water
Hancock Creek Hydroelectric Project	PUD No 1 of Snohomish County - (WA)	18.3 GWh	72.4 k MMBtu	Water
West Point Treatment Plant	King County Dept-Natural Res - (WA)	14.3 GWh	163.9 k MMBtu	Other Biomass Gas
Calligan Creek Hydroelectric Project	PUD No 1 of Snohomish County - (WA)	12.6 GWh	49.5 k MMBtu	Water
Weeks Falls	Eagle Creek Renewable Energy, LLC	10.7 GWh	40.3 k MMBtu	Water
Black Creek	Black Creek Hydro Inc	8.7 GWh	29.7 k MMBtu	Water
University of Washington Power Plant	University of Washington	125.4 MWh	1.4 M MMBtu	Distillate Fuel Oil
Cedar Hills	King County Solid Waste Division	53.0 MWh	43.3 k MMBtu	Landfill Gas : 86.4% Distillate Fuel Oil : 13.6%

* Data is based on the last 12 months since Aug 2026.

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Electricity Generation for Neighboring Counties

National Rank	County	Net Generation	# Power Plants
#64	Chelan County	13.7 TWh	6
#1954	Jefferson County	8.2 GWh	3
#676	Kittitas County	1.2 TWh	9
#180	Lewis County	7.6 TWh	8
#1245	Mason County	273.6 GWh	3
#492	Pierce County	2.1 TWh	14
#607	Skagit County	1.5 TWh	4
#1145	Snohomish County	359.3 GWh	9
#1056	Thurston County	439.7 GWh	4
#1191	Yakima County	319.4 GWh	12

* Net Generation data is based on the last 12 months since Aug 2026.

Electricity Generation for Cities Located in King County, WA

State Rank	City	Net Generation	# Power Plants
#82	Maple Valley, WA	53.0 MWh	1
#51	North Bend, WA	172.2 GWh	4
#66	Seattle, WA	14.5 GWh	2
#47	Snoqualmie, WA	205.5 GWh	5

* Net Generation data is based on the last 12 months since Aug 2026.