Jim Bridger
Jim Bridger is a natural gas plant in Sweetwater County, Wyoming, operated by PacifiCorp. No other power plant in Wyoming has more nameplate capacity; the state has 71 in all. Within the PacifiCorp East balancing area it is the largest of 172 plants. Its biggest unit, rated at 586 MW, is the second-largest single generator in Wyoming. Its oldest working unit dates from 1974, the second-earliest start among Wyoming’s 10 natural gas plants.
Nameplate capacity, 2025
2,326 MW
2,119 MW net summer capacity
4 operable units
- Gas steam turbine1,164 MW50%
- Coal steam1,162 MW50%
Unit by unit, 1974 to 2025
operating in 2025bar height follows unit size
Unit 1 Gas steam turbine, 578 MW, 1974
Unit 2 Gas steam turbine, 586 MW, 1975
Unit 3 Coal steam, 578 MW, 1976
Unit 4 Coal steam, 584 MW, 1979
Among Wyoming’s plants
Largest plants in the state by nameplate capacity, with the plants ranked next to this one.
- 1Jim Bridgerthis plant
- 2Laramie River Station1,863 MW
- 3Dave Johnston817 MW
Other rankings
- All US power plants
- 48th of 14,286
- US natural gas plants
- 12th of 1,961
- Natural gas plants in Wyoming
- 1st of 10
- Plants run by PacifiCorp
- 1st of 59
Operable units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Gas steam turbine | 578 MW | 531 MW | 1974 | Operating |
| 2 | Gas steam turbine | 586 MW | 539 MW | 1975 | Operating |
| 3 | Coal steam | 578 MW | 523 MW | 1976 | Operating |
| 4 | Coal steam | 584 MW | 526 MW | 1979 | Operating |
Who owns it
Shares are weighted by the nameplate capacity of each unit an owner holds.
| Owner | Share of capacity |
|---|---|
| PacifiCorp | 66.7% |
| Idaho Power Co | 33.3% |
Grid and site
- Balancing area
- PacifiCorp East
- Reliability region
- Western Electricity Coordinating Council
- Highest grid connection voltage
- 345 kV
- Water source
- Green River
- Nearest town on record
- Point of Rocks
- Operator type
- Utility
- Coordinates
- 41.738°N, 108.787°W
Closest plants
| Plant | Runs on | Capacity | Distance |
|---|---|---|---|
| Simplot Phosphates | Other sources | 11.5 MW | 22.4 mi southwest |
| Sweetwater Solar | Solar | 92 MW | 46.8 mi west |
| General Chemical | Coal | 30 MW | 50.9 mi west |
| WE Soda Alkalai LLC | Coal | 41 MW | 53.5 mi west |
| Flaming Gorge | Hydroelectric | 152 MW | 65.7 mi southwest |
| Shute Creek Facility | Natural gas | 144 MW | 67.8 mi west |
| Fontenelle | Hydroelectric | 10 MW | 68.6 mi west |
| Big Sand Draw Plant | Natural gas | 8 MW | 76.9 mi northeast |