Electricity Generation Aggregated by Washington County

State Rank	County	Net Generation (Past Year)	Power Plants
#7	Klickitat County, WA	5.3 TWh	16
#6	Whatcom County, WA	5.6 TWh	13
#13	Pierce County, WA	2.7 TWh	13
#28	Yakima County, WA	120.4 GWh	12
#25	King County, WA	330.0 GWh	12
#17	Kittitas County, WA	1.1 TWh	9
#26	Snohomish County, WA	329.5 GWh	9
#1	Grant County, WA	24.5 TWh	8
#5	Lewis County, WA	7.2 TWh	8
#20	Spokane County, WA	494.9 GWh	7
#8	Cowlitz County, WA	3.4 TWh	6
#15	Whitman County, WA	1.6 TWh	6
#3	Benton County, WA	10.2 TWh	6
#11	Grays Harbor County, WA	3.1 TWh	6
#22	Adams County, WA	454.9 GWh	4
#10	Columbia County, WA	3.1 TWh	4
#12	Walla Walla County, WA	3.0 TWh	4
#24	Stevens County, WA	350.4 GWh	4
#14	Skagit County, WA	1.7 TWh	4
#4	Chelan County, WA	7.4 TWh	4
#9	Pend Oreille County, WA	3.3 TWh	3
#27	Mason County, WA	290.0 GWh	3
#29	Clallam County, WA	36.2 GWh	3
#23	Thurston County, WA	428.3 GWh	3
#31	Franklin County, WA	17.2 GWh	3
#19	Lincoln County, WA	588.8 GWh	2
#16	Clark County, WA	1.6 TWh	2
#30	Jefferson County, WA	35.5 GWh	2
#2	Douglas County, WA	13.1 TWh	2
#21	Skamania County, WA	480.0 GWh	1
#18	Garfield County, WA	825.2 GWh	1

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

Totals are based on the most recent 12 months net generation

List of All Washington Counties