San Dimas Wash Generating Station
Los Angeles County, California · EIA plant ID 50233 · Operator: San Gabriel Valley Mun Wtr Dt
Nameplate1MWSummer 1 MW
Generators1in service
Net generation1GWh12 mo to Dec 2025
Capacity factor13%hydro units, summer MW
Heat rate—thermal plants only
First online1986
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 | 0 | 0.0% | — |
| 2002 | 4.7 | 54.0% | — |
| 2003 | 3.7 | 42.7% | — |
| 2005 | 2.6 | 29.9% | — |
| 2006 | 0.8 | 9.1% | — |
| 2007 | 0 | 0.0% | — |
| 2008 | 0.7 | 7.4% | — |
| 2009 | 0 | 0.0% | — |
| 2010 | 3.2 | 36.9% | — |
| 2011 | 2.3 | 26.0% | — |
| 2012 | 3 | 33.7% | — |
| 2013 | 0 | 0.0% | — |
| 2014 | 0 | 0.0% | — |
| 2015 | 0 | 0.0% | — |
| 2016 | 1.5 | 17.0% | — |
| 2017 | 0.4 | 4.3% | — |
| 2018 | 1.2 | 13.6% | — |
| 2019 | 3 | 34.5% | — |
| 2020 | 0 | 0.0% | — |
| 2021 | 0 | 0.0% | — |
| 2022 | 0 | 0.0% | — |
| 2023 | 2.9 | 33.5% | — |
| 2024 | 2.4 | 27.6% | — |
| 2025 | 1.2 | 13.4% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 4011 | Conventional Hydroelectric | HY | 1 | 1 | Mar 1986 | Operating (Standby / backup) | — | coming soon |
Owner / operator
Operator: San Gabriel Valley Mun Wtr Dt. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| San Gabriel Valley Mun Wtr Dt | 100.0% | 1 MW |
Nearby plants
Within 80 km.
| San Dimas | 10 MW | 0.9 km |
| Weymouth Solar Plant | 3 MW | 2.7 km |
| Gilead Sciences La Verne Rooftop Solar | 3 MW | 3.8 km |
| VESI Pomona | 40 MW | 7.7 km |
| San Gabriel Hydro Project | 5 MW | 10.1 km |
| Azusa | 3 MW | 10.2 km |