Electricity Generation Aggregated by Montana County

State Rank	County	Net Generation (Past Year)	Power Plants
#1	Rosebud County, MT	11.2 TWh	5
#2	Cascade County, MT	1.9 TWh	9
#3	Sanders County, MT	1.7 TWh	2
#4	Lincoln County, MT	1.6 TWh	1
#5	Big Horn County, MT	1.3 TWh	3
#6	Toole County, MT	1.1 TWh	3
#7	Custer County, MT	870.0 GWh	2
#8	Lake County, MT	804.8 GWh	1
#9	Carbon County, MT	757.8 GWh	5
#10	Yellowstone County, MT	748.7 GWh	8
#11	Flathead County, MT	702.0 GWh	4
#12	McCone County, MT	701.2 GWh	2
#13	Roosevelt County, MT	578.8 GWh	3
#14	Wheatland County, MT	520.3 GWh	8
#15	Deer Lodge County, MT	473.1 GWh	1
#16	Lewis and Clark County, MT	430.9 GWh	4
#17	Judith Basin County, MT	371.0 GWh	2
#18	Stillwater County, MT	356.6 GWh	9
#19	Silver Bow County, MT	193.8 GWh	1
#20	Beaverhead County, MT	159.5 GWh	2
#21	Teton County, MT	109.5 GWh	3
#22	Fallon County, MT	82.1 GWh	3
#23	Sweet Grass County, MT	68.4 GWh	2
#24	Meagher County, MT	66.5 GWh	1
#25	Liberty County, MT	44.0 GWh	1
#26	Broadwater County, MT	39.4 GWh	1
#27	Granite County, MT	11.0 GWh	1
#28	Golden Valley County, MT	5.6 GWh	1
#29	Richland County, MT	3.5 GWh	2
#30	Dawson County, MT	1.5 GWh	1

Net Generation data is based on the last 12 months since Dec 2023

Totals are based on the most recent 12 months net generation

List of All Montana Counties