Electricity Generation Aggregated by Washington County

State Rank	County	Net Generation (Past Year)	Power Plants
#28	Yakima County, WA	228.5 GWh	12
#14	Whitman County, WA	1.8 TWh	6
#7	Whatcom County, WA	4.4 TWh	13
#12	Walla Walla County, WA	3.4 TWh	4
#23	Thurston County, WA	441.5 GWh	4
#26	Stevens County, WA	346.7 GWh	4
#20	Spokane County, WA	556.8 GWh	7
#24	Snohomish County, WA	401.9 GWh	9
#21	Skamania County, WA	548.4 GWh	1
#15	Skagit County, WA	1.4 TWh	4
#13	Pierce County, WA	2.3 TWh	14
#8	Pend Oreille County, WA	4.1 TWh	3
#27	Mason County, WA	304.6 GWh	3
#19	Lincoln County, WA	641.5 GWh	2
#5	Lewis County, WA	7.3 TWh	8
#6	Klickitat County, WA	5.5 TWh	16
#17	Kittitas County, WA	1.2 TWh	9
#25	King County, WA	361.2 GWh	12
#30	Jefferson County, WA	3.2 GWh	3
#11	Grays Harbor County, WA	3.4 TWh	6
#1	Grant County, WA	28.9 TWh	9
#18	Garfield County, WA	806.7 GWh	2
#29	Franklin County, WA	12.8 GWh	3
#3	Douglas County, WA	11.2 TWh	1
#9	Cowlitz County, WA	3.8 TWh	6
#10	Columbia County, WA	3.5 TWh	4
#16	Clark County, WA	1.3 TWh	2
#2	Chelan County, WA	13.1 TWh	6
#4	Benton County, WA	8.0 TWh	7
#22	Adams County, WA	465.3 GWh	4

Net Generation data is based on the last 12 months since Mar 2026

Totals are based on the most recent 12 months net generation

List of All Washington Counties