Electricity Generation Aggregated by Washington County

State Rank	County	Net Generation (Past Year)	Power Plants
#27	Yakima County, WA	293.3 GWh	12
#14	Whitman County, WA	1.8 TWh	6
#8	Whatcom County, WA	3.7 TWh	13
#11	Walla Walla County, WA	3.2 TWh	4
#23	Thurston County, WA	448.5 GWh	4
#26	Stevens County, WA	302.8 GWh	4
#20	Spokane County, WA	559.1 GWh	7
#25	Snohomish County, WA	359.3 GWh	9
#21	Skamania County, WA	503.6 GWh	1
#15	Skagit County, WA	1.5 TWh	4
#12	Pierce County, WA	2.1 TWh	14
#7	Pend Oreille County, WA	4.6 TWh	3
#28	Mason County, WA	273.6 GWh	3
#19	Lincoln County, WA	624.1 GWh	2
#5	Lewis County, WA	7.4 TWh	8
#6	Klickitat County, WA	4.9 TWh	17
#16	Kittitas County, WA	1.2 TWh	9
#24	King County, WA	392.2 GWh	12
#30	Jefferson County, WA	8.2 GWh	3
#13	Grays Harbor County, WA	1.8 TWh	6
#1	Grant County, WA	30.1 TWh	10
#18	Garfield County, WA	799.2 GWh	2
#29	Franklin County, WA	10.9 GWh	3
#3	Douglas County, WA	11.9 TWh	1
#9	Cowlitz County, WA	3.6 TWh	6
#10	Columbia County, WA	3.3 TWh	4
#17	Clark County, WA	866.7 GWh	2
#2	Chelan County, WA	13.8 TWh	6
#4	Benton County, WA	10.1 TWh	7
#22	Adams County, WA	455.6 GWh	4

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

Totals are based on the most recent 12 months net generation

List of All Washington Counties