Electricity Generation Aggregated by Montana County

State Rank	County	Net Generation (Past Year)	Power Plants
#7	Yellowstone County, MT	962.7 GWh	8
#14	Wheatland County, MT	493.5 GWh	8
#8	Toole County, MT	960.8 GWh	3
#20	Teton County, MT	125.3 GWh	3
#23	Sweet Grass County, MT	82.2 GWh	2
#5	Stillwater County, MT	981.4 GWh	9
#21	Silver Bow County, MT	111.1 GWh	1
#2	Sanders County, MT	1.8 TWh	2
#1	Rosebud County, MT	10.3 TWh	5
#15	Roosevelt County, MT	474.1 GWh	3
#29	Richland County, MT	10.7 GWh	2
#25	Meagher County, MT	66.5 GWh	1
#11	McCone County, MT	756.9 GWh	2
#24	Madison County, MT	75.6 GWh	1
#3	Lincoln County, MT	1.6 TWh	1
#26	Liberty County, MT	31.2 GWh	1
#16	Lewis and Clark County, MT	411.5 GWh	4
#6	Lake County, MT	970.6 GWh	1
#17	Judith Basin County, MT	365.8 GWh	2
#30	Granite County, MT	9.0 GWh	1
#32	Golden Valley County, MT	4.6 GWh	1
#31	Gallatin County, MT	7.0 GWh	1
#13	Flathead County, MT	690.0 GWh	4
#22	Fallon County, MT	88.0 GWh	3
#18	Deer Lodge County, MT	345.1 GWh	2
#28	Dawson County, MT	15.9 GWh	1
#10	Custer County, MT	795.9 GWh	2
#4	Cascade County, MT	1.5 TWh	9
#12	Carbon County, MT	709.7 GWh	5
#27	Broadwater County, MT	27.9 GWh	1
#9	Big Horn County, MT	937.4 GWh	3
#19	Beaverhead County, MT	149.4 GWh	3

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

Totals are based on the most recent 12 months net generation

List of All Montana Counties