Electricity Generation Aggregated by Idaho County

State Rank	County	Net Generation (Past Year)	Power Plants
#35	Lemhi County, ID	45.0 MWh	1
#34	Jefferson County, ID	9.2 GWh	1
#33	Butte County, ID	10.1 GWh	1
#32	Clark County, ID	12.6 GWh	2
#31	Adams County, ID	13.1 GWh	1
#30	Lincoln County, ID	15.7 GWh	3
#29	Blaine County, ID	24.7 GWh	2
#28	Teton County, ID	27.8 GWh	2
#27	Valley County, ID	37.4 GWh	1
#26	Madison County, ID	37.5 GWh	1
#25	Boise County, ID	42.0 GWh	1
#24	Canyon County, ID	48.2 GWh	4
#23	Franklin County, ID	53.0 GWh	2
#22	Gem County, ID	58.8 GWh	2
#21	Bannock County, ID	78.5 GWh	4
#20	Boundary County, ID	103.9 GWh	2
#19	Fremont County, ID	105.8 GWh	4
#18	Caribou County, ID	111.6 GWh	4
#17	Minidoka County, ID	111.7 GWh	2
#16	Jerome County, ID	188.4 GWh	13
#15	Cassia County, ID	367.0 GWh	10
#14	Owyhee County, ID	456.1 GWh	3
#13	Bingham County, ID	458.4 GWh	2
#12	Nez Perce County, ID	465.0 GWh	1
#11	Power County, ID	695.6 GWh	6
#10	Gooding County, ID	845.9 GWh	14
#9	Bonner County, ID	1.0 TWh	2
#8	Ada County, ID	1.0 TWh	13
#7	Clearwater County, ID	1.4 TWh	2
#6	Twin Falls County, ID	1.4 TWh	40
#5	Payette County, ID	1.7 TWh	1
#4	Bonneville County, ID	2.0 TWh	13
#3	Washington County, ID	2.2 TWh	2
#2	Kootenai County, ID	2.3 TWh	4
#1	Elmore County, ID	3.1 TWh	26

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

Totals are based on the most recent 12 months net generation

List of All Idaho Counties