Langley Gulch Power Plant
Langley Gulch Power Plant is a natural gas plant in Payette County, Idaho, operated by Idaho Power Co. It ranks third by nameplate capacity among Idaho’s 153 power plants. It is the biggest of Idaho’s 8 natural gas plants. Within the Idaho Power balancing area it is the third-largest of 134 plants.
Nameplate capacity, 2025
318 MW
303 MW net summer capacity
2 operable units
- Gas combined cycle318 MW100%
Unit by unit, 2012 to 2025
operating in 2025bar height follows unit size
Unit GTG Gas combined cycle, 187 MW, 2012
Unit STG Gas combined cycle, 132 MW, 2012
Among Idaho’s plants
Largest plants in the state by nameplate capacity, with the plants ranked next to this one.
- 1Brownlee675 MW
- 2Dworshak465 MW
- 3Langley Gulch Power Plantthis plant
- 4Rathdrum Power LLC302 MW
- 5Evander Andrews Power Complex271 MW
Other rankings
- All US power plants
- 986th of 14,286
- US natural gas plants
- 593rd of 1,961
- Plants run by Idaho Power Co
- 3rd of 30
- Biggest single unit, among Idaho’s plants
- 4th of 153
Operable units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GTG | Gas combined cycle | 187 MW | 186 MW | 2012 | Operating |
| STG | Gas combined cycle | 132 MW | 118 MW | 2012 | Operating |
Grid and site
- Balancing area
- Idaho Power
- Reliability region
- Western Electricity Coordinating Council
- Highest grid connection voltage
- 230 kV
- Water source
- Snake River Plain Aquifer Well
- Nearest town on record
- New Plymouth
- Operator type
- Utility
- Coordinates
- 43.904°N, 116.820°W
Closest plants
| Plant | Runs on | Capacity | Distance |
|---|---|---|---|
| Thunderegg Solar Center, LLC | Solar | 10 MW | 8.6 mi west |
| Verde Light Community Solar | Solar | 3 MW | 12.9 mi northwest |
| Morgan Solar Center | Solar | 3 MW | 13.1 mi west |
| Open Range Solar Center, LLC | Solar | 10 MW | 14.3 mi southwest |
| Railroad Solar Center, LLC | Solar | 4.5 MW | 15.4 mi northwest |
| Ontario Solar Center | Solar | 3 MW | 17.7 mi northwest |
| Michell Butte Power Project | Hydroelectric | 2 MW | 19.1 mi southwest |
| Black Canyon | Hydroelectric | 10.2 MW | 19.1 mi east |