- Combustion
- Wind & solar
- Storage
- In development
- Operating
- 10 · 100 · 1,000 MW
Map
- Combustion
- Wind & solar
- Storage
- In development
- Operating
Intermountain Power Project: location and 4 exact-grade projects within 15 mi. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Intermountain Power Project
Power plant · Gas, combined cycle
Key facts
Power plant · Gas, combined cycleran 50% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 2025
- Net generation, 2025
- 4,803,126 MWh
- Grid
- 500 kV, 345 kV to Intermountain Power Agency (LDWP)
- Location
- Millard County, Utah
- Operated by
- Los Angeles Department of Water & Power
Output
- Gas
- Coal
- Oil
Details
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- Technology
- Gas, combined cycle source: “Natural Gas Fired Combined Cycle”
- Age
- 1 year since 2025
- Unused energy
- 4,773 GWh 2025Unused energyA lead, not a guarantee: MW × hours × (1 − capacity factor) for the latest year (EIA-923), gas, coal and oil plants only. Air-permit run-hour caps, heat rate (cost to run) and capacity-market or reliability obligations can rule it out.
- Heat rate
- 9,723 Btu/kWh 2025
All 6 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
| Attribute | Value |
|---|---|
| EPA greenhouse gas reporting (GHGRP) |
|
| Fuel burned (MMBtu), 2025 | 46,699,867 |
| Capacity factor, 2025 | 0.502 |
| Heat rate (Btu/kWh), 2025 | 9,722.8 |
| Net generation (MWh), 2025 | 4,803,126.0 |
| Balancing authority code | LDWP |
Retirement
EIA-860M September 2026StatusSome generators have retired; the rest of the plant is still in service. As of EIA-860M for September 2026.- Capacity retired
- 1,640 MW
- Generators retired
- 2
- Capacity still in service
- 1,093.2 MW
| Generator | Technology | Nameplate | State | Date |
|---|---|---|---|---|
| 1 | Conventional Steam Coal | 820 MW | Retired | October 2025 |
| 2 | Conventional Steam Coal | 820 MW | Retired | November 2025 |
Grid
EIA-860 2025Grid fieldsAs the plant reported them to EIA-860 for 2025 (Schedule 2).- Grid voltage at the plant
- 500 kV, 345 kV
- Transmission or distribution system owner
- Intermountain Power Agency
- Balancing authority
- Los Angeles Department of Water and Power
- NERC region
- WECC
Can the connection be reused?
A plant that retires usually leaves its substation, transmission connection and interconnection agreement behind, and those may be reusable by a new project at the same site. FERC Order No. 845 lets an interconnection customer use surplus interconnection service at an existing site, and some transmission providers' tariffs let a replacement resource take over a retiring unit's interconnection service, usually within a set time after the retirement. Whether any such right still exists here, who holds it and on what terms depends on the owner, the transmission provider and timing; this page does not establish any of that.
Ownership
2 companies3| Company | Role | Share | As of | Source |
|---|---|---|---|---|
| Los Angeles Department of Water & Power | Operator | EIA-860M | ||
| Intermountain Power Agency | Owner | 100.0% | Dec 31, 2023 | EPA GHGRP |
| Intermountain Power Agency | Owner | 100.0% | Dec 31, 2025 | EIA-860 |
Timeline
- Stated Unit 2 scheduled to retire, 820 MW · EIA-860M
- Stated Unit 1 scheduled to retire, 820 MW · EIA-860M
- In service · EIA-860M
Sources
5 sourcesSources EIA-860M · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory · EPA Greenhouse Gas Reporting Program — facility register with parent-company shares (Envirofacts pub_dim_facility; FLIGHT) · EIA-860 Annual Electric Generator Report — Schedule 4 Owner (ownership shares per generator), plus Plant/Generator schedules
Sources
- EIA-860M
- EIASource: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)
- EIA-860M Preliminary Monthly Electric Generator Inventory
- EPA Greenhouse Gas Reporting Program — facility register with parent-company shares (Envirofacts pub_dim_facility; FLIGHT)
- EIA-860 Annual Electric Generator Report — Schedule 4 Owner (ownership shares per generator), plus Plant/Generator schedules
Around this plant
Nearby
within 15 mi| Project | Kind | Away | MW |
|---|---|---|---|
| Gale 1 Solar Announced | Solar + storage | 2.0 mi | 450 |
| Utah Solar 1 Announced | Solar | 3.9 mi | 300 |
| Notch Peak Solar LLC Permitted | Solar | 4.3 mi | 324 |
| Intermountain Pumped Storage Project Announced | Pumped hydro storage | 9.9 mi | 1,000 |
Sources EIA-860M