Sonoma Central Landfill Phase II
Sonoma Central Landfill Phase II is a 3 MW biomass power plant in Sonoma County, California, operated by County of Sonoma Dept of Trnsp. EIA-860M lists 4 generating units here, inside CAISO. Its units entered service in 1996.
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
- 3.2 MW
- 2.8 MW net summer
- Generating units
- 4
- In service
- 1996
- EIA plant ID
- 55753
Where it is
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- County
- Sonoma County, California
- Coordinates
- 38.3017, -122.7489
- Balancing authority
- CISO
- Sector
- Commercial Non-CHP
Units, technology and status
- Operator of record
- County of Sonoma Dept of Trnsp
- Primary energy source
- Biomass
- Technologies
- Landfill Gas
- Status
- Operating
Sonoma Central Landfill Phase II: FAQ
- Where is Sonoma Central Landfill Phase II?
- 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 Sonoma Central Landfill Phase II?
- 3 MW of nameplate capacity across 4 units, as of the EIA-860M release for 2026-07.
- Who owns Sonoma Central Landfill Phase II?
- EIA-860M names County of Sonoma Dept of Trnsp 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 Sonoma Central Landfill Phase II LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — County of Sonoma Dept of Trnsp 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 "Sonoma Central Landfill Phase II LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Sonoma Central Landfill Phase II still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.