Electricity Generation Aggregated by Washington County

State Rank	County	Net Generation (Past Year)	Power Plants
#20	Skamania County, WA	525.6 GWh	1
#18	Garfield County, WA	852.0 GWh	1
#30	Jefferson County, WA	35.5 GWh	2
#19	Lincoln County, WA	588.8 GWh	2
#2	Douglas County, WA	13.1 TWh	2
#16	Clark County, WA	1.6 TWh	2
#29	Clallam County, WA	36.2 GWh	3
#9	Pend Oreille County, WA	3.2 TWh	3
#27	Mason County, WA	290.0 GWh	3
#23	Thurston County, WA	439.8 GWh	3
#10	Columbia County, WA	3.2 TWh	4
#14	Skagit County, WA	1.7 TWh	4
#11	Walla Walla County, WA	3.1 TWh	4
#24	Stevens County, WA	350.4 GWh	4
#22	Adams County, WA	451.4 GWh	4
#4	Chelan County, WA	7.4 TWh	4
#3	Benton County, WA	10.2 TWh	6
#12	Grays Harbor County, WA	3.1 TWh	6
#15	Whitman County, WA	1.7 TWh	6
#8	Cowlitz County, WA	3.4 TWh	6
#21	Spokane County, WA	494.7 GWh	7
#5	Lewis County, WA	7.2 TWh	8
#1	Grant County, WA	23.7 TWh	8
#25	Snohomish County, WA	329.5 GWh	9
#17	Kittitas County, WA	1.2 TWh	9
#26	King County, WA	328.8 GWh	12
#28	Yakima County, WA	81.9 GWh	12
#13	Pierce County, WA	2.7 TWh	13
#6	Whatcom County, WA	5.5 TWh	13
#7	Klickitat County, WA	5.3 TWh	16

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

Totals are based on the most recent 12 months net generation

List of All Washington Counties