Geysers Unit 5-20
BrownfieldMiddletown, Sonoma, California · Geysers Power Co LLC
Geysers Unit 5-20 is a former geothermal site in Middletown, Sonoma, California, retired 2006-05-01. Retired generation sites are among the most attractive datacenter redevelopment targets: the existing interconnection was sized for roughly 110 MW of generation, so the grid hookup, transmission rights, and often cooling-water access are already in place — collapsing the speed-to-power timeline versus a greenfield build.
Former use & capacity
Grid hookup & remediation
Site conditions & market — Sonoma County
County-level intelligence for this site's location — the power economics, water, hazard, connectivity, and workforce a developer screens before ever visiting. Assembled from FEMA NRI, BLS QCEW, FCC BDC, USGS water-use, and EIA.
Market & workforce
Power economics & interconnection
Water & cooling
Hazard, flood & connectivity
County-level context — address-level utility offerings and flood zoning vary within the county. Confirm site-specific service with the utility and a Phase I ESA.
Nearby brownfield & retired-generation sites
A proximity screen of other retired-plant, contaminated, and EPA-flagged sites near Geysers Unit 5-20 — the environmental neighborhood, ranked by legacy grid capacity.
| Site | Former use | Legacy MW | Distance | Cleanup status |
|---|---|---|---|---|
| Buckeye Geothermal Power Plant | former geothermal site | 57 | 6.1 mi | — |
| Wild Horse Power Plant | former geothermal site | 48 | 6.4 mi | — |
| West Ford Flat Power Plant | former geothermal site | 38 | 1.5 mi | — |
| Bear Canyon Power Plant | former geothermal site | 24 | 3.0 mi | — |
| Cloverdale Solar | former landfill site | 2 | 14.6 mi | cleanup_complete |
Derived from GridCensus's retired-generator & EPA brownfield dataset. Not a substitute for an ASTM E1527 Phase I environmental radius report.
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Nearby datacenter candidate sites
Scored candidate sites near Geysers Unit 5-20, ranked by DC Readiness.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| OAKMONT SOUTH | Substation-Adjacent | CA | Napa County | 230 kV | 300 MW | 8.2 yrs | 52.2 |
| OAKMONT NORTH | Substation-Adjacent | CA | Napa County | 230 kV | 300 MW | 8.2 yrs | 52.1 |
| FULTON | Substation-Adjacent | CA | Sonoma County | 230 kV | 300 MW | 8.2 yrs | 51.5 |
| SOCRATES 19 | Substation-Adjacent | CA | Sonoma County | 230 kV | 300 MW | 8.2 yrs | 51.2 |
| WEST FORD FLAT | Substation-Adjacent | CA | Sonoma County | 230 kV | 300 MW | 8.2 yrs | 50.9 |
| BEAR CANYON | Substation-Adjacent | CA | Sonoma County | 230 kV | 300 MW | 8.2 yrs | 50.7 |
| BIG GEYSERS | Substation-Adjacent | CA | Sonoma County | 230 kV | 300 MW | 8.2 yrs | 49.1 |
| QUICKSILVER | Substation-Adjacent | CA | Sonoma County | 230 kV | 300 MW | 8.2 yrs | 49.1 |
Nearby internet exchanges
- X2nSat PetalumaPetaluma, CA · 0 networks
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Dataset updated . Screening estimates derived from public data sources.
Brownfield attributes are derived from EIA retired-generator and EPA public data. Existing capacity reflects the retired plant's historical nameplate, not deliverable interconnection for a new load. Confirm reusable interconnection rights, remediation status, and site availability with the utility, ISO, and current owner.
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Every site and score for Geysers Unit 5-20, Middletown, Sonoma, California is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.