Electricity Generation Aggregated by Montana County

State Rank	County	Net Generation (Past Year)	Power Plants
#10	Yellowstone County, MT	777.6 GWh	8
#13	Wheatland County, MT	521.2 GWh	8
#6	Toole County, MT	1.1 TWh	3
#21	Teton County, MT	127.2 GWh	3
#25	Sweet Grass County, MT	67.7 GWh	2
#18	Stillwater County, MT	342.3 GWh	9
#19	Silver Bow County, MT	187.6 GWh	1
#3	Sanders County, MT	1.8 TWh	2
#1	Rosebud County, MT	11.0 TWh	5
#14	Roosevelt County, MT	516.8 GWh	3
#31	Richland County, MT	3.5 GWh	2
#24	Meagher County, MT	72.8 GWh	1
#12	McCone County, MT	751.6 GWh	2
#23	Madison County, MT	76.2 GWh	1
#2	Lincoln County, MT	1.9 TWh	1
#27	Liberty County, MT	36.1 GWh	1
#16	Lewis and Clark County, MT	421.1 GWh	4
#7	Lake County, MT	970.3 GWh	1
#17	Judith Basin County, MT	366.6 GWh	2
#28	Granite County, MT	11.0 GWh	1
#29	Golden Valley County, MT	5.5 GWh	1
#30	Gallatin County, MT	3.7 GWh	1
#9	Flathead County, MT	789.3 GWh	4
#22	Fallon County, MT	86.0 GWh	3
#15	Deer Lodge County, MT	463.7 GWh	2
#32	Dawson County, MT	2.6 GWh	1
#8	Custer County, MT	850.9 GWh	2
#4	Cascade County, MT	1.6 TWh	9
#11	Carbon County, MT	755.4 GWh	5
#26	Broadwater County, MT	47.4 GWh	1
#5	Big Horn County, MT	1.2 TWh	3
#20	Beaverhead County, MT	161.3 GWh	3

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

Totals are based on the most recent 12 months net generation

List of All Montana Counties