Electricity Generation Aggregated by Idaho County

State Rank	County	Net Generation (Past Year)	Power Plants
#1	Elmore County, ID	3.1 TWh	26
#2	Kootenai County, ID	2.3 TWh	4
#3	Washington County, ID	2.2 TWh	2
#4	Bonneville County, ID	2.0 TWh	13
#5	Payette County, ID	1.7 TWh	1
#6	Twin Falls County, ID	1.4 TWh	40
#7	Clearwater County, ID	1.4 TWh	2
#8	Bonner County, ID	1.0 TWh	2
#9	Ada County, ID	1.0 TWh	13
#10	Gooding County, ID	845.9 GWh	14
#11	Power County, ID	697.5 GWh	6
#12	Nez Perce County, ID	458.2 GWh	1
#13	Owyhee County, ID	456.5 GWh	3
#14	Bingham County, ID	430.4 GWh	2
#15	Cassia County, ID	367.0 GWh	10
#16	Jerome County, ID	188.4 GWh	13
#17	Minidoka County, ID	111.7 GWh	2
#18	Caribou County, ID	111.6 GWh	4
#19	Fremont County, ID	105.8 GWh	4
#20	Boundary County, ID	103.9 GWh	2
#21	Bannock County, ID	85.6 GWh	4
#22	Gem County, ID	58.8 GWh	2
#23	Franklin County, ID	53.0 GWh	2
#24	Canyon County, ID	49.7 GWh	4
#25	Boise County, ID	42.0 GWh	1
#26	Madison County, ID	39.8 GWh	1
#27	Valley County, ID	37.4 GWh	1
#28	Teton County, ID	27.8 GWh	2
#29	Blaine County, ID	24.7 GWh	2
#30	Lincoln County, ID	15.7 GWh	3
#31	Adams County, ID	14.3 GWh	1
#32	Clark County, ID	12.6 GWh	2
#33	Butte County, ID	10.1 GWh	1
#34	Jefferson County, ID	9.2 GWh	1
#35	Lemhi County, ID	37.0 MWh	1

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

Totals are based on the most recent 12 months net generation

List of All Idaho Counties