Intermountain Power Project
Millard County, Utah · EIA plant ID 6481 · Operator: Los Angeles Department of Water & Power
×1,640 MW coal retired since 2020 (latest Nov 2025)
Nameplate1,093MWSummer 940 MW
Generators2in service
Net generation5,503GWh12 mo to Aug 2026
Capacity factor62%gas/coal/oil units, summer MW
Heat rate7,056Btu/kWhfossil units, electric fuel, HHV
First online2025Runs as intermediate
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 13,390.8 | — | — |
| 2002 | 13,485.6 | — | — |
| 2003 | 13,563.4 | 94.4% | 9,363 |
| 2004 | 14,435.3 | 91.3% | 9,785 |
| 2005 | 13,664.3 | 86.7% | 10,398 |
| 2006 | 14,451.7 | 91.6% | 9,511 |
| 2007 | 14,426.5 | 91.5% | 9,497 |
| 2008 | 14,449.8 | 91.4% | 9,445 |
| 2009 | 13,555.6 | 86.0% | 9,258 |
| 2010 | 13,079.5 | 83.0% | 9,693 |
| 2011 | 13,002.9 | 82.5% | 9,899 |
| 2012 | 9,763.6 | 61.8% | 9,919 |
| 2013 | 12,387.2 | 78.6% | 9,639 |
| 2014 | 12,369.8 | 78.5% | 9,574 |
| 2015 | 10,860.9 | 68.9% | 9,736 |
| 2016 | 8,403.9 | 53.1% | 9,786 |
| 2017 | 8,413.9 | 53.4% | 9,735 |
| 2018 | 8,499.3 | 53.9% | 9,806 |
| 2019 | 7,561.8 | 48.0% | 9,913 |
| 2020 | 6,761.9 | 42.8% | 10,061 |
| 2021 | 7,580.6 | 48.1% | 9,963 |
| 2022 | 5,510.3 | 34.9% | 10,084 |
| 2023 | 4,448.9 | 28.2% | 10,501 |
| 2024 | 5,707.8 | 36.1% | 10,006 |
| 2025 | 4,803.1 | 34.7% | 9,723 |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 3 | Natural Gas Fired Combined Cycle | CS | 546.6 | 470 | Oct 2025 | Operating | — | coming soon |
| 4 | Natural Gas Fired Combined Cycle | CS | 546.6 | 470 | Dec 2025 | Operating | — | coming soon |
| 1 | Conventional Steam Coal | ST | 820 | 900 | Jun 1986 | Retired Oct 2025 | — | coming soon |
| 2 | Conventional Steam Coal | ST | 820 | 900 | May 1987 | Retired Nov 2025 | — | coming soon |
Owner / operator
Operator: Los Angeles Department of Water & Power. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Intermountain Power Agency | 100.0% | 1,093 MW |
Nearby plants
Within 80 km.
| Gale 1 Solar | — | 3.3 km |
| Utah Solar 1 | — | 6.2 km |
| Notch Peak Solar LLC | — | 7 km |
| Intermountain Pumped Storage Project | — | 16 km |
| Pavant Solar II LLC | 50 MW | 43.7 km |
| Pavant Solar III | 20 MW | 43.8 km |