Warm Springs Hydro Project
Sonoma County, California · EIA plant ID 54261 · Operator: Sonoma County Water Agency
Nameplate3MWSummer 1 MW
Generators1in service
Net generation0GWh12 mo to Dec 2025
Capacity factor0%hydro units, summer MW
Heat rate—thermal plants only
First online1988
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 | 13.9 | 93.2% | — |
| 2002 | 15.6 | 89.0% | — |
| 2003 | 15.8 | 150.6% | — |
| 2004 | 14.1 | 133.8% | — |
| 2005 | 14.7 | 139.5% | — |
| 2006 | 14.8 | 140.9% | — |
| 2007 | 11.8 | 112.2% | — |
| 2008 | 14 | 133.0% | — |
| 2009 | 9.8 | 93.2% | — |
| 2010 | 14.4 | 137.2% | — |
| 2011 | 13.3 | 126.9% | — |
| 2012 | 11.3 | 107.3% | — |
| 2013 | 13.2 | 125.4% | — |
| 2014 | 9.4 | 89.5% | — |
| 2015 | 10.3 | 97.7% | — |
| 2016 | 9 | 84.9% | — |
| 2017 | 3.4 | 31.9% | — |
| 2018 | 3.2 | 30.1% | — |
| 2019 | 0 | 0.0% | — |
| 2020 | 0 | 0.0% | — |
| 2021 | 0 | 0.0% | — |
| 2022 | 0 | 0.0% | — |
| 2023 | 0 | 0.0% | — |
| 2024 | 0 | 0.0% | — |
| 2025 | 0 | 0.0% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 3385 | Conventional Hydroelectric | HY | 2.7 | 1.2 | Dec 1988 | Operating | — | coming soon |
Owner / operator
Operator: Sonoma County Water Agency. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Sonoma County Water Agency | 100.0% | 3 MW |
Nearby plants
Within 80 km.
| Cloverdale Solar Center | 1 MW | 5.3 km |
| ASTI | 1 MW | 5.4 km |
| Cloverdale Solar I | 2 MW | 5.7 km |
| Aidlin Geothermal Power Plant | 25 MW | 16.8 km |
| Dissigno Healdsburg FPV, LLC | 3 MW | 19.8 km |
| Sonoma California Geothermal | 78 MW | 23.4 km |