Power Plants in Wyoming
Bywatts lists 63 power plants in Wyoming.
Browse Wyoming by fuel: Natural Gas (7) · Hydro (14) · Oil (2) · Coal (10) · Wind (20)
Wyoming's power sector in numbers
Bywatts maps 53 operating power plants with 8.6 GW of nameplate capacity in Wyoming. Coal leads with 53% of that capacity across 8 plants, followed by Wind (15%) and Hydro (3%). The inventory also includes 9 plants (199 MW) that EIA-860 lists as retired and 1 never built; the largest retired plant is ROCK RIVER I LLC (50 MW, retired 2022).
The largest operating plants are JIM BRIDGER (2,318 MW, Coal, PACIFICORP), LARAMIE RIVER STATION (1,710 MW, BASIN ELECTRIC POWER COOP) and DAVE JOHNSTON (817 MW, Coal, PACIFICORP).
Of the 53 operating plants with a recorded commissioning year, 24 came online in 2000 or later and 4 in 2010 or later; the busiest decade for new capacity was the 1970s (2.7 GW).
The largest operators by operating capacity are PACIFICORP (10 plants, 4.8 GW), BASIN ELECTRIC POWER COOP (5 plants, 2.2 GW) and BLACK HILLS POWER INC (5 plants, 459 MW).
Retail electricity sales in Wyoming reached 17.3 TWh in 2025, up 2.4% over ten years and up 0.7% year on year; residential customers took 17.0% of it. The average retail price across all sectors was 9.75 cents per kWh, up 22.3% since 2015.
The database also maps 197 named substations (2 of the 51 with a recorded voltage are rated 345 kV or above), no data centers, 41 solar installers and 10 solar companies in Wyoming.
Operating capacity by fuel
| Fuel | Plants | Capacity | Share |
|---|---|---|---|
| Coal | 8 | 4.5 GW | 53% |
| Not recorded | 6 | 2.3 GW | 26% |
| Wind | 14 | 1.3 GW | 15% |
| Hydro | 14 | 299 MW | 3% |
| Natural Gas | 7 | 228 MW | 3% |
| Other | 2 | 14 MW | <1% |
| Oil | 2 | 5 MW | <1% |
Retail electricity sales
| Year | Sales (TWh) | Avg. price (cents/kWh) |
|---|---|---|
| 2020 | 15.3 | 8.27 |
| 2021 | 15.8 | 8.26 |
| 2022 | 16.5 | 8.24 |
| 2023 | 16.8 | 8.40 |
| 2024 | 17.2 | 9.13 |
| 2025 | 17.3 | 9.75 |
Sources: HIFLD power-plant inventory (capacity, fuel, operator), EIA-860 (commissioning year, retirements, operable capacity), EIA retail sales and revenue series through January 2026. Counts are of plants Bywatts lists, not every generator in the state.
Weather peril risk for Wyoming projects
23 Wyoming counties carry a FEMA National Risk Index hazard profile. Earthquake is the leading peril in 7 of them, and Weston County ranks highest for modeled catastrophe exposure at 4.9 of 5.
Wyoming counties ranked by modeled catastrophe exposure
| County | Exposure score | Band | Leading peril | FEMA rating | Insurability signal |
|---|---|---|---|---|---|
| Weston County | 4.9 of 5 | Critical | Hail | Relatively Moderate | Difficult |
| Campbell County | 4.9 of 5 | Critical | Hail | Relatively High | Difficult |
| Crook County | 4.9 of 5 | Critical | Winter weather | Relatively Moderate | Difficult |
| Goshen County | 4.9 of 5 | Critical | Hail | Relatively Moderate | Difficult |
| Platte County | 4.2 of 5 | Critical | Wildfire | Relatively Low | Constrained |
| Laramie County | 4.1 of 5 | High | Wildfire | Relatively Moderate | Constrained |
| Johnson County | 4.0 of 5 | High | Riverine flooding | Relatively Low | Constrained |
| Niobrara County | 3.7 of 5 | High | Winter weather | Relatively Low | Constrained |
| Sheridan County | 3.6 of 5 | High | Riverine flooding | Relatively Moderate | Constrained |
| Converse County | 3.1 of 5 | Elevated | Wildfire | Relatively Moderate | Standard |
What this means for insurance placement in Wyoming
9 of 23 assessed Wyoming counties flag as Constrained or Difficult on the modeled insurability signal, which is where percentage hail and named windstorm deductibles, and any sublimit discussion, tend to start. The signal is a screening output, not a carrier decision.
Score a Wyoming county for hail, wind and flood exposure in the weather risk calculator
Data source and vintage
- FEMA rating, national percentile and events per year are reported by the FEMA National Risk Index for the county.
- Exposure score is derived by Bywatts as the national percentile of the county's modeled solar loss rate, so a 5 is the worst national quintile. Band and insurability signal are Bywatts screening outputs, not carrier decisions.
Modeled estimate for screening and negotiation. Built from FEMA National Risk Index county hazard data and a solar vulnerability layer documented above. Not a quote, a binder, or actuarial advice, and not a substitute for a carrier's own model. Hazard data: FEMA National Risk Index December 2025, synced 2026-07-24. Resolution is county level, not site level. The solar vulnerability layer that turns FEMA building loss into modeled solar loss was derived by Bywatts and revised on physical reasoning. It has not been reviewed by a practising underwriter.
All 63 power plants in Wyoming
| Plant | Fuel | Capacity (MW) | Operator |
|---|---|---|---|
| JIM BRIDGER | Coal | 2,318 | PACIFICORP |
| LARAMIE RIVER STATION | · | 1,710 | BASIN ELECTRIC POWER COOP |
| DAVE JOHNSTON | Coal | 817 | PACIFICORP |
| NAUGHTON | Coal | 707 | PACIFICORP |
| DRY FORK STATION | · | 390 | BASIN ELECTRIC POWER COOP |
| WYODAK | Coal | 362 | PACIFICORP |
| TOP OF THE WORLD WINDPOWER PROJECT | Wind | 200 | DUKE ENERGY TOP OF THE WORLD WINDPOWER |
| GLENROCK | Wind | 144 | PACIFICORP |
| WYOMING WIND ENERGY CENTER | Wind | 144 | FPL ENERGY WYOMING WIND LLC |
| SEVEN MILE HILL | Wind | 124 | PACIFICORP |
| NEIL SIMPSON II | Coal | 120 | BLACK HILLS POWER INC |
| WYGEN III | · | 116 | BLACK HILLS POWER INC |
| DUNLAP | Wind | 116 | PACIFICORP |
| SHUTE CREEK FACILITY | Natural Gas | 108 | EXXON MOBIL PRODUCTION CO |
| HIGH PLAINS | Wind | 103 | PACIFICORP |
| ROLLING HILLS | Wind | 103 | PACIFICORP |
| CAMPBELL HILL WINDPOWER | Wind | 99 | DUKE ENERGY DEGS CAMPBELL HILL |
| WYGEN 2 | Coal | 95 | BLACK HILLS POWER INC |
| WYGEN 1 | Coal | 88 | BLACK HILLS POWER INC |
| MOUNTAIN WIND POWER II LLC | Wind | 80 | EDISON MISSION ENERGY |
| FREMONT CANYON | Hydro | 67 | U S BUREAU OF RECLAMATION |
| MOUNTAIN WIND POWER LLC | Wind | 61 | EDISON MISSION ENERGY |
| SEMINOE | Hydro | 52 | U S BUREAU OF RECLAMATION |
| ROCK RIVER I LLC Retired 2022 | Wind | 50 | AES WIND GENERATION INC |
| SILVER SAGE WINDPOWER | Wind | 42 | DUKE ENERGY DEGS SILVER SAGE WNDPWR LLC |
| ALCOVA | Hydro | 41 | U S BUREAU OF RECLAMATION |
| FOOTE CREEK I Retired 2023 | Wind | 41 | AES WIND GENERATION INC |
| FMC WESTVACO | · | 41 | FMC WESTVACO |
| NEIL SIMPSON GAS TURBINE #2 | Natural Gas | 40 | BLACK HILLS POWER INC |
| GLENDO | Hydro | 38 | U S BUREAU OF RECLAMATION |
| KORTES | Hydro | 36 | U S BUREAU OF RECLAMATION |
| OSAGE Retired 2014 | Coal | 35 | BLACK HILLS POWER INC |
| GENERAL CHEMICAL | Coal | 30 | TATA CHEMICALS PARTNERS |
| MCFADDEN RIDGE | Wind | 30 | PACIFICORP |
| HAPPY JACK WINDPOWER PROJECT | Wind | 29 | DUKE ENERGY DEGS HAPPY JACK |
| FOOTE CREEK III Retired 2023 | Wind | 25 | TERRA-GEN OPERATING CO LLC |
| ARVADA | Natural Gas | 23 | BASIN ELECTRIC POWER COOP |
| BARBER CREEK | Natural Gas | 23 | BASIN ELECTRIC POWER COOP |
| HARTZOG | Natural Gas | 23 | BASIN ELECTRIC POWER COOP |
| NEIL SIMPSON Retired 2014 | Coal | 22 | BLACK HILLS POWER INC |
| BUFFALO BILL | Hydro | 18 | U S BUREAU OF RECLAMATION |
| CASPER WIND FARM | Wind | 17 | CHEVRON USA |
| FOOTE CREEK IV Retired 2023 | Wind | 17 | AES WIND GENERATION INC |
| BOYSEN | Hydro | 15 | U S BUREAU OF RECLAMATION |
| SIMPLOT PHOSPHATES | Other | 12 | SIMPLOT PHOSPHATES LLC |
| FONTENELLE | Hydro | 10 | U S BUREAU OF RECLAMATION |
| SINCLAIR OIL REFINERY | Natural Gas | 7 | SINCLAIR OIL CORP |
| GUERNSEY | Hydro | 6 | U S BUREAU OF RECLAMATION |
| MEDICINE BOW Retired 2024 | Wind | 6 | PLATTE RIVER POWER AUTHORITY |
| BEAVER CREEK GAS PLANT | Natural Gas | 5 | DEVON ENERGY PRODUCTION CO |
| HEART MOUNTAIN | Hydro | 5 | U S BUREAU OF RECLAMATION |
| SPIRIT MOUNTAIN | Hydro | 5 | U S BUREAU OF RECLAMATION |
| SHOSHONE | Hydro | 3 | U S BUREAU OF RECLAMATION |
| GARLAND CANAL POWER PLANT | · | 3 | SHOSHONE IRRIGATION DISTRICT |
| LAKE | Oil | 3 | NORTHWESTERN ENERGY |
| ELK BASIN GASOLINE PLANT | Other | 2 | ENCORE ENERGY PARTNERS OPERATING LLC |
| OLD FAITHFUL | Oil | 2 | NORTHWESTERN ENERGY |
| WESTERN SUGAR COOP - TORRINGTON Retired 2019 | · | 2 | WESTERN SUGAR COOPERATIVE |
| FOOTE CREEK II Retired 2023 | Wind | 2 | TERRA-GEN OPERATING CO LLC |
| SWIFT CREEK | · | 2 | LOWER VALLEY ENERGY INC |
| PILOT BUTTE | Hydro | 2 | U S BUREAU OF RECLAMATION |
| STRAWBERRY CREEK | Hydro | 2 | LOWER VALLEY ENERGY INC |
| MEDICINE BOW FUEL & POWER LLC Never built | · | · | MEDICINE BOW FUEL & POWER LLC |