Electricity Generation Aggregated by Idaho County

State Rank	County	Net Generation (Past Year)	Power Plants
#31	Adams County, ID	14.1 GWh	1
#27	Valley County, ID	37.4 GWh	1
#5	Payette County, ID	1.8 TWh	1
#25	Boise County, ID	42.0 GWh	1
#12	Nez Perce County, ID	462.9 GWh	1
#26	Madison County, ID	38.1 GWh	1
#33	Butte County, ID	10.1 GWh	1
#35	Lemhi County, ID	36.0 MWh	1
#34	Jefferson County, ID	9.2 GWh	1
#3	Washington County, ID	2.2 TWh	2
#28	Teton County, ID	27.8 GWh	2
#17	Minidoka County, ID	111.7 GWh	2
#22	Gem County, ID	58.8 GWh	2
#23	Franklin County, ID	53.0 GWh	2
#7	Clearwater County, ID	1.4 TWh	2
#32	Clark County, ID	12.6 GWh	2
#14	Bingham County, ID	455.2 GWh	2
#20	Boundary County, ID	103.9 GWh	2
#8	Bonner County, ID	1.0 TWh	2
#29	Blaine County, ID	24.7 GWh	2
#30	Lincoln County, ID	15.7 GWh	3
#13	Owyhee County, ID	456.7 GWh	3
#19	Fremont County, ID	105.7 GWh	4
#21	Bannock County, ID	85.7 GWh	4
#18	Caribou County, ID	111.6 GWh	4
#2	Kootenai County, ID	2.3 TWh	4
#24	Canyon County, ID	49.0 GWh	4
#11	Power County, ID	697.0 GWh	6
#15	Cassia County, ID	367.0 GWh	10
#9	Ada County, ID	1.0 TWh	13
#4	Bonneville County, ID	2.0 TWh	13
#16	Jerome County, ID	188.4 GWh	13
#10	Gooding County, ID	845.9 GWh	14
#1	Elmore County, ID	3.1 TWh	26
#6	Twin Falls County, ID	1.4 TWh	40

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

Totals are based on the most recent 12 months net generation

List of All Idaho Counties