Power plants in Montana
72 operating power projects with 7,522 MW of nameplate capacity, from EIA-860M for August 2026.
Projects
72
Nameplate capacity
7,522 MW
Counties with a plant
33
Operators
45
Capacity by fuel
Hydro · 2,545 MW · 23Wind · 2,147 MW · 23Coal · 1,811 MW · 4Natural gas · 705 MW · 8Solar · 181 MW · 9Other fuels · 134 MW · 5
MW is nameplate from operating generators and batteries. Plant counts use each project's primary fuel, so a coal and gas plant counts once.
Largest power plants in Montana
Top 50 · All 72 plants| Plant | Primary fuel | MW | County | Operator |
|---|---|---|---|---|
| Colstrip | Coal | 1,647 | Rosebud | Talen Montana LLC |
| Noxon Rapids | Hydro | 488 | Sanders | Avista Corp |
| Hungry Horse | Hydro | 428 | Flathead | U S Bureau of Reclamation |
| Libby | Hydro | 420 | Lincoln | USACE Northwestern Division |
| Clearwater Wind I | Wind | 366 | Rosebud | Clearwater Energy Resources LLC |
| Yellowtail | Hydro | 278 | Big Horn | U S Bureau of Reclamation |
| Beaver Creek Wind Facility | Wind | 248 | Stillwater | Puget Sound Energy Inc |
| Pryor Mountain Wind | Wind | 240 | Carbon | PacifiCorp |
| Selis Ksanka Qlispe | Hydro | 228 | Lake | Energy Keepers Inc |
| Clearwater Wind East | Wind | 208 | Custer | Portland General Electric Co |
Montana power plants by fuel
Newest plants in Montana
Ordered by the month the first generator began operating.
University of Montana CHPNatural gas · 6.1 MW · Missoula County · December 2025Beaver Creek Wind FacilityWind · 248 MW · Stillwater County · August 2025Clearwater Wind IIIWind · 100 MW · Rosebud County · September 2024Yellowstone County Generating StationNatural gas · 207 MW · Yellowstone County · July 2024Clearwater Wind EastWind · 207.9 MW · Custer County · January 2024Clearwater Wind IIWind · 102.8 MW · Rosebud County · December 2023
Counties with the most capacity
Largest operators in Montana
Talen Montana LLC1 plant · 1,647 MW
U S Bureau of Reclamation3 plants · 764 MW
Avista Corp1 plant · 488 MW
NorthWestern Energy (MT wind/thermal)4 plants · 460 MW
NorthWestern Energy (MT Hydro)10 plants · 445 MW
Grouped by EIA operator name. Parent companies are not merged.
All 72 plants in Montana, by county
Beaverhead County 1 plant
- Apex Solar Solar · 80 MW
Big Horn County 3 plants
- Yellowtail Hydro · 278.2 MW
- Hardin Generator Project Coal · 115.7 MW
- South Mills Solar, LLC Solar · 3 MW
Broadwater County 1 plant
- Broadwater Power Project Hydro · 9.7 MW
Carbon County 2 plants
- Pryor Mountain Wind Wind · 239.8 MW
- South Dry Creek Hydro Hydro · 2 MW
Cascade County 8 plants
- Morony Hydro · 63 MW
- Cochrane Hydro · 59.4 MW
- Rainbow (MT) Hydro · 59 MW
- Ryan Hydro · 55.2 MW
- Holter Hydro · 45 MW
- Black Eagle Hydro · 26.7 MW
- Horseshoe Bend Wind Park Wind · 9.7 MW
- Black Eagle Solar, LLC Solar · 3 MW
Custer County 2 plants
- Clearwater Wind East Wind · 207.9 MW
- Miles City GT Natural gas · 23.3 MW
Dawson County 1 plant
- Glendive GT Natural gas · 83.7 MW
Deer Lodge County 1 plant
- Dave Gates Generating Station Natural gas · 203.1 MW
Fallon County 1 plant
- Diamond Willow Wind Facility Wind · 30 MW
Flathead County 4 plants
- Hungry Horse Hydro · 428 MW
- Big Fork Hydro · 4.1 MW
- Flathead Landfill to Gas Energy Facility Landfill gas · 3.2 MW
- Stoltze CoGen1 Wood biomass · 2.8 MW
Gallatin County 1 plant
- GCC Trident Solar Project Solar · 4 MW
Golden Valley County 1 plant
- Magpie Solar, LLC Solar · 3 MW
Granite County 1 plant
- Flint Creek Hydroelectric LLC Hydro · 2 MW
Judith Basin County 2 plants
- South Peak Wind Wind · 80 MW
- Spion Kop Wind Farm Wind · 40 MW
Lake County 1 plant
- Selis Ksanka Qlispe Hydro · 227.8 MW
Lewis and Clark County 4 plants
- Canyon Ferry Hydro · 57.6 MW
- Hauser Hydro · 16.8 MW
- Green Meadow Solar, LLC Solar · 3 MW
- Great Divide Solar, LLC Solar · 3 MW
Liberty County 1 plant
- Tiber Dam Hydroelectric Plant Hydro · 7.5 MW
Lincoln County 1 plant
- Libby Hydro · 420 MW
Madison County 1 plant
- Madison Dam Hydro · 16.4 MW
McCone County 1 plant
- Fort Peck Hydro · 162.4 MW
Meagher County 1 plant
- Gordon Butte Wind LLC Wind · 17.7 MW
Missoula County 1 plant
- University of Montana CHP Natural gas · 6.1 MW
Richland County 1 plant
- Lewis & Clark Natural gas · 18.6 MW
Roosevelt County 3 plants
- Culbertson Generation Station Natural gas · 108.2 MW
- OREG 1 Inc Other fuels · 30 MW
- OREG 2 Inc Other fuels · 30 MW
Rosebud County 5 plants
- Colstrip Coal · 1,647.4 MW
- Clearwater Wind I Wind · 365.5 MW
- Clearwater Wind II Wind · 102.8 MW
- Clearwater Wind III Wind · 100 MW
- Colstrip Energy LP Coal · 46.1 MW
Sanders County 2 plants
- Noxon Rapids Hydro · 487.8 MW
- Thompson Falls Hydro · 91.1 MW
Silver Bow County 1 plant
- Basin Creek Plant Natural gas · 54.9 MW
Stillwater County 4 plants
- Beaver Creek Wind Facility Wind · 248 MW
- Stillwater Wind, LLC Wind · 79.7 MW
- Mystic Hydro · 12 MW
- River Bend Solar, LLC (MT) Solar · 2 MW
Sweet Grass County 1 plant
- Big Timber Wind Farm Wind · 25 MW
Teton County 3 plants
- Greenfield Wind - MT Wind · 25 MW
- Turnbull Hydro Hydro · 13 MW
- Fairfield Wind Wind · 10 MW
Toole County 3 plants
- NaturEner Rim Rock Energy Wind · 189 MW
- NaturEner Glacier Wind Energy 1 Wind · 106.5 MW
- NaturEner Glacier Wind Energy 2 Wind · 103.5 MW
Wheatland County 4 plants
- Judith Gap Wind Energy Center Wind · 135 MW
- Musselshell Wind Project Wind · 10 MW
- Musselshell Wind Project Two LLC Wind · 10 MW
- Two Dot Wind Farm Wind · 9.7 MW
Yellowstone County 5 plants
- Yellowstone County Generating Station Natural gas · 207 MW
- MTSUN Solar · 80 MW
- Yellowstone Energy LP Petroleum coke · 68 MW
- Two Dot Wind Broadview East LLC Wind · 1.8 MW
- Western Sugar Cooperative - Billings Coal · 1.5 MW
Questions about power plants in Montana
How many power plants are in Montana?
EIA-860M for August 2026 lists 72 operating power projects in Montana, with 7,522 MW of nameplate capacity including batteries.
What is the largest power plant in Montana?
Colstrip in Rosebud County, with 1,647.4 MW of nameplate capacity. The next largest is Noxon Rapids, with 487.8 MW.
How much of Montana's capacity is wind?
2,147 MW, about 29% of nameplate capacity. 23 projects have wind as their primary fuel.
Source: EIA-860M August 2026, published 2026-09-24. Page updated 2026-10-04. Data sources