Black Rock III
BrownfieldCalipatria, Imperial, California · CE Obsidian Energy LLC
Black Rock III is a former geothermal site in Calipatria, Imperial, California. Retired generation sites are among the most attractive datacenter redevelopment targets: the existing interconnection was sized for roughly 70 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
Nearby datacenter candidate sites
Scored candidate sites near Black Rock III, ranked by DC Readiness.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| Hudson Ranch Power II LLC | Brownfield | CA | Imperial County | 230 kV | 55 MW | 5.7 yrs | 51.3 |
| Ormesa I | Brownfield | CA | Imperial County | 66 kV | 31 MW | 5.7 yrs | 49.4 |
| IMPERIAL VALLEY | Substation-Adjacent | CA | Imperial County | 500 kV | 1,000 MW | 8.2 yrs | 48.2 |
| Black Rock II | Brownfield | CA | Imperial County | 66 kV | 70 MW | 5.7 yrs | 48.2 |
| BLM Solar DLA: West Chocolate Mountains | Greenfield | CA | Imperial County | — | 5,000 MW | 5.7 yrs | 46.4 |
| EC Near Brawley | Greenfield | CA | Imperial | — | — | 5.7 yrs | 46.2 |
| EL CENTRO | Substation-Adjacent | CA | Imperial County | 230 kV | 300 MW | 8.2 yrs | 45.3 |
| EC Near El Centro Hybrid | Greenfield | CA | Imperial | — | — | 5.7 yrs | 45.2 |
See all datacenter sites in California →
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.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for Black Rock III, Calipatria, Imperial, California. Pro and Enterprise plans unlock the full 164,098-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.