State
Montana
Who serves its customers, 2025
| Kind of utility | Customers | Share of customers |
|---|---|---|
| Investor owned | 463,888 | 64.5% |
| Cooperative | 137,542 | 19.1% |
| Public (municipal, state, federal, and districts) | 23,266 | 3.2% |
| Retail power marketer | 6 | 0.0% |
| Other | 94,993 | 13.2% |
Customers of full-service and energy-only providers, as EIA counts them; delivery-only customers are the same people, so they are not counted twice.
U.S. Energy Information Administration · Annual Electric Power Industry Report (Form EIA-861) · data for 2025 · as of Oct 7, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by Oct 7, 2027. Last checked for an update: Oct 31, 2026.
Average price by sector, 2025
| Sector | Average price (cents per kWh) |
|---|---|
| Residential | 12.99 |
| Commercial | 11.88 |
| Industrial | 7.03 |
Revenue from every kind of service over sales counted once, as EIA computes its state averages.
Capacity and generation by fuel
| Fuel | Capacity | Net generation in 2025 |
|---|---|---|
| Hydro | 2,683.6 MW | 8,441,048 MWh |
| Wind | 2,146.6 MW | 6,231,948 MWh |
| Subbituminous coal | 1,764.6 MW | 9,340,122 MWh |
| Natural gas | 704.9 MW | 1,315,853 MWh |
| Solar | 181 MW | 349,747 MWh |
| Petroleum coke | 68 MW | 454,855 MWh |
| WH | 60 MW | 261,007 MWh |
| WC | 46.1 MW | 276,429 MWh |
| Landfill gas | 3.2 MW | 17,140 MWh |
| Wood | 2.8 MW | 20,961 MWh |
| OG | 1.6 MW | 2,915 MWh |
| Distillate fuel oil | 13,178 MWh | |
| WO | 0 MWh | |
| Lignite coal | 0 MWh | |
| Bituminous coal | 0 MWh |
Balancing authorities serving it: AVA, BPAT, NWMT, SWPP, WACM, WAUW.
U.S. Energy Information Administration · Annual Electric Generator Report (Form EIA-860) · data for 2025 · as of Sep 10, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by Sep 10, 2027. Last checked for an update: Oct 31, 2026.
U.S. Energy Information Administration · Power Plant Operations Report (Form EIA-923) · data for 2025 · as of Sep 11, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by Sep 11, 2027. Last checked for an update: Oct 31, 2026.
Interconnection queue, as of the end of 2025
| Type | Active capacity (MW) | Projects |
|---|---|---|
| Solar | 302 | 2 |
| Wind | 7,173 | 17 |
| Storage | 100 | 2 |
| Gas | 487 | 4 |
| Hybrid | 2,484 | 14 |
| Other | 738 | 6 |
Requests still active in an interconnection queue at the end of 2025. Most never get built. Credit: Lawrence Berkeley National Laboratory and GridTracker.
Lawrence Berkeley National Laboratory and GridTracker · Queued Up: Interconnection Queue Data File (Lawrence Berkeley National Laboratory) · data for 2025 · as of May 7, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by May 7, 2027. Last checked for an update: Oct 31, 2026.
Utilities
| Utility | Ownership, as EIA reports it | Customers | Sales (MWh) |
|---|---|---|---|
| NorthWestern Energy LLC - (MT) | Investor Owned | 438,851 | 9,069,683 |
| Adjustment 2025 | 94,993 | 4,322,393 | |
| Flathead Electric Coop Inc | Cooperative | 77,288 | 1,610,333 |
| Montana-Dakota Utilities Co | Investor Owned | 25,498 | 692,951 |
| Yellowstone Valley Elec Co-op | Cooperative | 23,683 | 311,457 |
| USBIA-Mission Valley Power | Federal | 23,250 | 404,433 |
| Missoula Electric Coop, Inc | Cooperative | 16,711 | 252,394 |
| Fergus Electric Coop, Inc | Cooperative | 7,157 | 254,804 |
| Lower Yellowstone R E A, Inc | Cooperative | 5,253 | 327,757 |
| Northern Lights, Inc | Cooperative | 5,057 | 64,446 |
| Fall River Rural Elec Coop Inc | Cooperative | 2,103 | 53,935 |
| Powder River Energy Corp | Cooperative | 173 | 65,754 |
| McKenzie Electric Coop Inc | Cooperative | 117 | 664 |
| Black Hills Power, Inc. | Investor Owned | 47 | 159,850 |
| Avista Corp | Investor Owned | 32 | 1,050 |
| WAPA-- Western Area Power Administration | Federal | 16 | 158,924 |
| Talen Energy Marketing, LLC | Retail Power Marketer | 6 | 290,249 |
A utility with too few reported figures for its own page is listed here with what it reported.
Power plants (77)
| Plant | County | Nameplate capacity | Operator |
|---|---|---|---|
| Colstrip | Rosebud | 1,647.4 MW | Talen Montana LLC |
| Libby | Lincoln | 525 MW | USACE Northwestern Division |
| Noxon Rapids | Sanders | 487.8 MW | Avista Corp |
| Hungry Horse | Flathead | 428 MW | U S Bureau of Reclamation |
| Clearwater Wind I | Rosebud | 365.5 MW | Clearwater Energy Resources LLC |
| Yellowtail | Big Horn | 278.2 MW | U S Bureau of Reclamation |
| Beaver Creek Wind Facility | Stillwater | 248 MW | Puget Sound Energy Inc |
| Pryor Mountain Wind | Carbon | 239.8 MW | PacifiCorp |
| Selis Ksanka Qlispe | Lake | 227.8 MW | Energy Keepers Inc |
| Clearwater Wind East | Custer | 207.9 MW | Portland General Electric Co |
| Yellowstone County Generating Station | Yellowstone | 207 MW | NorthWestern Energy (MT wind/thermal) |
| Dave Gates Generating Station | Deer Lodge | 203.1 MW | NorthWestern Energy (MT wind/thermal) |
| NaturEner Rim Rock Energy | Toole | 189 MW | NaturEner Rim Rock Energy LLC |
| Fort Peck | McCone | 179.7 MW | USACE-Omaha |
| Judith Gap Wind Energy Center | Wheatland | 135 MW | Invenergy Services LLC |
| Hardin Generator Project | Big Horn | 115.7 MW | Heorot Power Management |
| Culbertson Generation Station | Roosevelt | 108.2 MW | Basin Electric Power Coop |
| NaturEner Glacier Wind Energy 1 | Toole | 106.5 MW | NaturEner Glacier Wind Energy 1 LLC |
| NaturEner Glacier Wind Energy 2 | Toole | 103.5 MW | NaturEner Glacier Wind Energy 2 LLC |
| Clearwater Wind II | Rosebud | 102.8 MW | Clearwater Wind II, LLC |
| Clearwater Wind III | Rosebud | 100 MW | Clearwater Wind III, LLC |
| Thompson Falls | Sanders | 98.1 MW | NorthWestern Energy (MT Hydro) |
| Glendive GT | Dawson | 83.7 MW | Montana-Dakota Utilities Co |
| Apex Solar | Beaverhead | 80 MW | Apex Solar LLC |
| MTSUN | Yellowstone | 80 MW | Greenbacker Renewable Energy Corporation |
| South Peak Wind | Judith Basin | 80 MW | ALLETE Clean Energy |
| Stillwater Wind, LLC | Stillwater | 79.7 MW | Pattern Operators LP |
| Yellowstone Energy LP | Yellowstone | 68 MW | Yellowstone Energy LP |
| Morony | Cascade | 63 MW | NorthWestern Energy (MT Hydro) |
| Cochrane | Cascade | 59.4 MW | NorthWestern Energy (MT Hydro) |
| Rainbow (MT) | Cascade | 59 MW | NorthWestern Energy (MT Hydro) |
| Canyon Ferry | Lewis and Clark | 57.6 MW | U S Bureau of Reclamation |
| Ryan | Cascade | 55.2 MW | NorthWestern Energy (MT Hydro) |
| Basin Creek Plant | Silver Bow | 54.9 MW | Basin Creek Power Services LLC |
| Holter | Cascade | 54.6 MW | NorthWestern Energy (MT Hydro) |
| Colstrip Energy LP | Rosebud | 46.1 MW | Colstrip Energy LP |
| Spion Kop Wind Farm | Judith Basin | 40 MW | NorthWestern Energy (MT wind/thermal) |
| Diamond Willow Wind Facility | Fallon | 30 MW | Montana-Dakota Utilities Co |
| OREG 1 Inc | Roosevelt | 30 MW | Ormat Nevada Inc |
| OREG 2 Inc | Roosevelt | 30 MW | Ormat Nevada Inc |
| Black Eagle | Cascade | 26.7 MW | NorthWestern Energy (MT Hydro) |
| Big Timber Wind Farm | Sweet Grass | 25 MW | RWE Clean Energy |
| Greenfield Wind - MT | Teton | 25 MW | Greenbacker Renewable Energy Corporation |
| Miles City GT | Custer | 23.3 MW | Montana-Dakota Utilities Co |
| Lewis & Clark | Richland | 18.6 MW | Montana-Dakota Utilities Co |
| Gordon Butte Wind LLC | Meagher | 17.7 MW | Gordon Butte Wind LLC |
| Hauser | Lewis and Clark | 16.8 MW | NorthWestern Energy (MT Hydro) |
| Madison Dam | Madison | 16.4 MW | NorthWestern Energy (MT Hydro) |
| Turnbull Hydro | Teton | 13 MW | Turnbull Hydro LLC |
| Mystic | Stillwater | 12 MW | NorthWestern Energy (MT Hydro) |
| Fairfield Wind | Teton | 10 MW | Greenbacker Renewable Energy Corporation |
| Musselshell Wind Project | Wheatland | 10 MW | Musselshell Wind Project LLC |
| Musselshell Wind Project Two LLC | Wheatland | 10 MW | Musselshell Wind Project Two LLC |
| Broadwater Power Project | Broadwater | 9.7 MW | Montana Dept-Natural Res&Consv |
| Horseshoe Bend Wind Park | Cascade | 9.7 MW | Cycle Holdings, LLC |
| Two Dot Wind Farm | Wheatland | 9.7 MW | NorthWestern Energy (MT wind/thermal) |
| Tiber Dam Hydroelectric Plant | Liberty | 7.5 MW | Tiber Montana LLC |
| University of Montana CHP | Missoula | 6.1 MW | University of Montana |
| Big Fork | Flathead | 4.1 MW | PacifiCorp |
| GCC Trident Solar Project | Gallatin | 4 MW | GCC Trident LLC |
| Flathead Landfill to Gas Energy Facility | Flathead | 3.2 MW | Flathead Electric Coop Inc |
| Black Eagle Solar, LLC | Cascade | 3 MW | Adapture Renewables, Inc. |
| Great Divide Solar, LLC | Lewis and Clark | 3 MW | Adapture Renewables, Inc. |
| Green Meadow Solar, LLC | Lewis and Clark | 3 MW | Adapture Renewables, Inc. |
| Magpie Solar, LLC | Golden Valley | 3 MW | Adapture Renewables, Inc. |
| South Mills Solar, LLC | Big Horn | 3 MW | Adapture Renewables, Inc. |
| Stoltze CoGen1 | Flathead | 2.8 MW | F H Stoltze Land & Lumber Co |
| Flint Creek Hydroelectric LLC | Granite | 2 MW | Hydrodynamics Inc |
| River Bend Solar, LLC (MT) | Stillwater | 2 MW | Adapture Renewables, Inc. |
| South Dry Creek Hydro | Carbon | 2 MW | Hydrodynamics Inc |
| Two Dot Wind Broadview East LLC | Yellowstone | 1.8 MW | Two Dot Wind Broadview East LLC |
| Phillips 66 Billings Refinery | Yellowstone | 1.6 MW | Phillips 66 Billings Refinery |
| Western Sugar Cooperative - Billings | Yellowstone | 1.5 MW | Western Sugar Cooperative - Billings |
| Anthelope Hills Solar Generation BESS | Beaverhead | 0 MW | ARFL bn, LLC |
| Beartooth Energy Storage LLC | Yellowstone | 0 MW | Beartooth Energy Storage, LLC |
| Haymaker Hybrid | Wheatland | 0 MW | Haymaker Energy Project LLC |
| Jawbone Wind Project | Wheatland | 0 MW | Triple Oak Power LLC |