Agua Mansa Power Plant
San Bernardino County, California · EIA plant ID 55951 · Operator: E I Colton LLC
Nameplate61MWSummer 40 MW
Generators1in service
Net generation4GWh12 mo to Dec 2025
Capacity factor1%gas/coal/oil units, summer MW
Heat rate—Btu/kWhfossil units, electric fuel, HHV
First online2003Runs as peaking
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) |
|---|---|---|---|
| 2003 | 79.4 | 37.9% | 11,613 |
| 2004 | 24.3 | 6.8% | 10,071 |
| 2005 | 28.3 | 7.9% | 9,621 |
| 2006 | 30.2 | 8.4% | 10,512 |
| 2007 | 48.8 | 13.7% | 10,600 |
| 2008 | 58.8 | 16.4% | 9,979 |
| 2009 | 22.5 | 6.3% | 10,171 |
| 2010 | 29.5 | 8.3% | 10,159 |
| 2011 | 12.1 | 3.4% | 9,895 |
| 2012 | 43.1 | 12.0% | 10,170 |
| 2013 | 39.8 | 11.1% | 10,187 |
| 2014 | 23.7 | 6.6% | 10,178 |
| 2015 | 14.6 | 4.1% | 10,014 |
| 2016 | 6.5 | 1.8% | 10,351 |
| 2017 | 11.6 | 3.3% | 10,865 |
| 2018 | 7.9 | 2.2% | 11,458 |
| 2019 | 4 | 1.1% | — |
| 2020 | 14.5 | 4.1% | — |
| 2021 | 12.7 | 3.6% | — |
| 2022 | 12.7 | 3.6% | — |
| 2023 | 10.2 | 2.9% | — |
| 2024 | 8.8 | 2.5% | — |
| 2025 | 3.8 | 1.1% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| AMP1 | Natural Gas Fired Combustion Turbine | GT | 60.5 | 40 | Jun 2003 | Operating | — | coming soon |
Owner / operator
Operator: E I Colton LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| City of Colton - (CA) | 100.0% | 61 MW |
Nearby plants
Within 80 km.
| Colton Solar Two, LLC | 1 MW | 0.2 km |
| ESCA-LL-COLTON, LLC | 3 MW | 0.2 km |
| CA Bloomington 2551 S Lilac Avenue Micro | — | 2.2 km |
| Century Generating Facility | 45 MW | 2.2 km |
| Drews Generating Facility | 45 MW | 2.3 km |
| IGS SBD1 | 3 MW | 2.3 km |