Warm Springs Hydro Project
Warm Springs Hydro Project is a 3 MW hydroelectric power plant in Sonoma County, California, operated by Sonoma County Water Agency - (CA). EIA-860M lists 1 generating unit here, inside CAISO. Its unit entered service in 1988.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 2.7 MW
- 1.2 MW net summer
- Generating units
- 1
- In service
- 1988
- EIA plant ID
- 54261
Where it is
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- County
- Sonoma County, California
- Coordinates
- 38.7221, -123.0112
- Balancing authority
- CISO
- Sector
- IPP Non-CHP
Units, technology and status
- Operator of record
- Sonoma County Water Agency - (CA)
- Primary energy source
- Hydro
- Technologies
- Conventional Hydroelectric
- Status
- Operating
Every plant Sonoma County Water Agency - (CA) reports to EIA →
Warm Springs Hydro Project: FAQ
- Where is Warm Springs Hydro Project?
- In Sonoma County, California (CA). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is Warm Springs Hydro Project?
- 3 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
- Who owns Warm Springs Hydro Project?
- EIA-860M names Sonoma County Water Agency - (CA) as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is this the same as Warm Springs Hydro Project LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Sonoma County Water Agency - (CA) here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Warm Springs Hydro Project LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Warm Springs Hydro Project still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.