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San Bernardino County, California · EIA plant ID 332 · Operator: Southern California Edison Co
Nameplate3MWSummer 3 MW
Generators2in service
Net generation1GWh12 mo to Dec 2025
Capacity factor5%hydro units, summer MW
Heat rate—thermal plants only
First online1917
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), hydro 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.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 5.5 | 34.7% | — |
| 2002 | 3.3 | 20.8% | — |
| 2003 | 3.9 | 24.9% | — |
| 2004 | 4.3 | 27.0% | — |
| 2005 | 7.7 | 48.8% | — |
| 2006 | 8.4 | 53.3% | — |
| 2007 | 4.6 | 29.0% | — |
| 2008 | 6.5 | 41.1% | — |
| 2009 | 5.4 | 34.4% | — |
| 2010 | 7.8 | 49.4% | — |
| 2011 | 7.8 | 31.9% | — |
| 2012 | 5.2 | 21.3% | — |
| 2013 | 2.8 | 11.6% | — |
| 2014 | 1.9 | 7.8% | — |
| 2015 | 1.6 | 6.2% | — |
| 2016 | 1.3 | 4.9% | — |
| 2017 | 3.5 | 13.3% | — |
| 2018 | 2.5 | 9.7% | — |
| 2019 | 4.8 | 18.2% | — |
| 2020 | 6 | 22.8% | — |
| 2021 | 3.4 | 12.8% | — |
| 2022 | 2.5 | 9.4% | — |
| 2023 | 6.2 | 23.5% | — |
| 2024 | 8.7 | 32.8% | — |
| 2025 | 1.2 | 4.6% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | HY | 1.5 | 1.5 | Dec 1917 | Operating (Standby / backup) | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 1.5 | 1.5 | Dec 1917 | Operating (Standby / backup) | — | coming soon |
Owner / operator
Operator: Southern California Edison Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Southern California Edison Co | 100.0% | 3 MW |
Nearby plants
Within 80 km.
| Inland Empire Energy Storage | 70 MW | 2.6 km |
| Chambers 4 - Rialto LGB8 | 2 MW | 3 km |
| Solar Photovoltaic Project #26 | retired | 3.7 km |
| Niagara Bottling - Rialto | 4 MW | 3.8 km |
| OES Biogas Power | — | 5.1 km |
| Solar Photovoltaic Project #03 | retired | 6.8 km |