Intermountain Power Project
Intermountain Power Project is a natural gas plant in Millard County, Utah, operated by Los Angeles Department of Water & Power. It ranks third by nameplate capacity among Utah’s 126 power plants. Of its current capacity, 1,093 MW came online between 2023 and 2025. Retired units here add up to 1,640 MW across 2 units, taken out of service in 2025. Its biggest unit, rated at 547 MW, is the largest single generator in Utah.
Nameplate capacity, 2025
1,093 MW
940 MW net summer capacity
2 operable units
- Gas combined cycle1,093 MW100%
Unit by unit, 1986 to 2025
operating in 2025retiredbar height follows unit size
Unit 1 Coal steam, 820 MW, 1986–2025
Unit 2 Coal steam, 820 MW, 1987–2025
Unit 3 Gas combined cycle, 547 MW, 2025
Unit 4 Gas combined cycle, 547 MW, 2025
Among Utah’s plants
Largest plants in the state by nameplate capacity, with the plants ranked next to this one.
- 1Hunter1,472 MW
- 2Lake Side Power Plant1,246 MW
- 3Intermountain Power Projectthis plant
- 4Huntington1,016 MW
- 5Currant Creek567 MW
Other rankings
- All US power plants
- 272nd of 14,286
- US natural gas plants
- 130th of 1,961
- Natural gas plants in Utah
- 2nd of 22
- Plants in the LA Department of Water and Power balancing area
- 3rd of 95
- Plants run by Los Angeles Department of Water & Power
- 3rd of 28
Operable units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 3 | Gas combined cycle | 547 MW | 470 MW | 2025 | Operating |
| 4 | Gas combined cycle | 547 MW | 470 MW | 2025 | Operating |
Retired units
| Unit | Technology | Nameplate | In service |
|---|---|---|---|
| 1 | Coal steam | 820 MW | 1986–2025 |
| 2 | Coal steam | 820 MW | 1987–2025 |
Who owns it
Shares are weighted by the nameplate capacity of each unit an owner holds.
| Owner | Share of capacity |
|---|---|
| Intermountain Power Agency | 100.0% |
Grid and site
- Balancing area
- LA Department of Water and Power
- Reliability region
- Western Electricity Coordinating Council
- Highest grid connection voltage
- 500 kV
- Water source
- DMAD Reservoir
- Nearest town on record
- Delta
- Operator type
- Utility
- Coordinates
- 39.510°N, 112.580°W
Closest plants
| Plant | Runs on | Capacity | Distance |
|---|---|---|---|
| Pavant Solar II LLC | Solar | 50 MW | 27.1 mi southeast |
| Pavant Solar III | Solar | 20 MW | 27.2 mi southeast |
| Pavant Solar, LLC | Solar | 50 MW | 39.7 mi south |
| Currant Creek | Natural gas | 567 MW | 42.4 mi northeast |
| Clover Creek Solar Community Solar | Solar | 80 MW | 43.4 mi northeast |
| Gunnison Solar | Solar | 1.5 MW | 47.9 mi southeast |
| Faraday Solar | Solar | 525 MW | 48.2 mi northeast |
| Manti Lower | Hydroelectric | 1.2 MW | 54.1 mi east |