JIM BRIDGER
OperatingCoal power plant
- Capacity
- 2,318 MW
- Primary fuel
- Coal
- County
- Sweetwater County
- Operator
- PACIFICORP
- Status
- Operating
- Commissioned
- 1974
- EIA plant ID
- 8066
- Generators
- 4
- Net generation (2024)
- 7,807 GWh
- Capacity factor (2024, EIA nameplate)
- 38%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 41.7380, -108.7864
JIM BRIDGER, a 2,318 MW Coal power plant in Sweetwater County, Wyoming. Operated by PACIFICORP, commissioned 1974.
How JIM BRIDGER compares
With 2,318 MW of capacity, JIM BRIDGER is the largest of the 53 operating power plants Bywatts maps in Wyoming and the largest of the 8 operating Coal plants in the state. It accounts for about 51% of Wyoming's operating Coal capacity and 27% of all operating capacity in the state. Nationally it is the 22nd-largest of the 324 operating Coal plants in the database. Commissioned in 1974, it is older than 62% of the 53 operating Wyoming plants with a recorded commissioning year. Its operator, PACIFICORP, runs 10 operating plants in Wyoming totaling 4,823 MW. It shares Sweetwater County with 3 other operating plants, including FMC WESTVACO and GENERAL CHEMICAL.
Under the same EIA plant code, EIA-860 lists 4 generators at the site with 2,326 MW of nameplate capacity. Net generation was 7,807 GWh in 2024 (a 38% capacity factor), down 27% from 2022. Its generators came online between 1974 and 1979.
Grid neighborhood
The nearest named substation is JIM BRIDGER (345 kV), about 0.3 miles away; the closest transmission line found within 10 miles is a 345 kV line owned by PACIFICORP, under 0.1 miles away. One other operating power plant sits within 25 miles: SIMPLOT PHOSPHATES (12 MW).
Computed by Bywatts from HIFLD power plant, substation and transmission line records and EIA-860/923 survey data; distances are straight-line. Sources and methodology
Weather peril exposure
JIM BRIDGER is a 2,318 MW coal power plant in Sweetwater County, WY, operated by PACIFICORP, commissioned in 1974. Sweetwater County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.2 of 5 at the 6th national percentile. Earthquake is the leading peril, rated Relatively Low by FEMA at the 71st percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a coal plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Sweetwater County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Earthquake | Relatively Low | 71st | 3.8 of 5 | <0.01 |
| Winter weather | Relatively High | 67th | 3.7 of 5 | 13.0 |
| Wildfire | Relatively Low | 60th | 3.4 of 5 | <0.01 |
| Riverine flooding | Relatively Low | 43rd | 2.7 of 5 | 0.39 |
| Hail | Very Low | 22nd | 1.9 of 5 | 0.07 |
| Ice storm | Very Low | 18th | 1.7 of 5 | 0.01 |
| Lightning | Relatively Low | 13th | 1.5 of 5 | 38.5 |
| Tornado | Very Low | 7th | 1.3 of 5 | 0.36 |
| Strong wind | Very Low | 3rd | 1.1 of 5 | 0.19 |
Perils not assessed in Sweetwater County
These perils carry no usable National Risk Index figure for this county, so they are excluded from the scoring rather than scored zero. A zero would claim the peril was assessed and found benign.
| Peril | Why it is not scored |
|---|---|
| Hurricane | FEMA rating is "Not Applicable" for this county |
| Coastal flooding | FEMA rating is "Not Applicable" for this county |
| Heat wave | FEMA rating is "No Rating" for this county |
Model hail, wind and flood exposure for Sweetwater County in the weather risk calculator
Ratings are the FEMA National Risk Index county hazard ratings; the peril score is a Bywatts transform of the FEMA national percentile. Full data sources and the solar vulnerability methodology are in the weather risk calculator.
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.