Mammoth G2
BrownfieldMammoth Lakes, Mono, California · Ormat Nevada Inc
Mammoth G2 is a former geothermal site in Mammoth Lakes, Mono, California, retired 2013-04-01. Retired generation sites are among the most attractive datacenter redevelopment targets: the existing interconnection was sized for roughly 15 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 — Mono 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.
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Nearby datacenter candidate sites
Scored candidate sites near Mammoth G2, ranked by DC Readiness.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| UPPER GORGE | Substation-Adjacent | CA | Mono County | 230 kV | 300 MW | 8.2 yrs | 48.5 |
| MOMMOTH PACIFIC 1 | Substation-Adjacent | CA | Mono County | 115 kV | 100 MW | 8.2 yrs | 45.9 |
| POOLE PH | Substation-Adjacent | CA | Mono County | 115 kV | 100 MW | 8.2 yrs | 44.3 |
| CONTROL GORGE | Substation-Adjacent | CA | Mono County | 115 kV | 100 MW | 8.2 yrs | 44.2 |
| BISHOP CREEK 3 | Substation-Adjacent | CA | Mono County | 115 kV | 100 MW | 8.2 yrs | 44.2 |
| SHERWIN | Substation-Adjacent | CA | Mono County | 115 kV | 100 MW | 8.2 yrs | 44.1 |
| Mine Site | Former Mine | CA | Mono County | — | — | 6.9 yrs | 40.8 |
| EC FFE Mono County | Greenfield | CA | Mono County | — | — | 5.7 yrs | 40.3 |
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
Every site and score for Mammoth G2, Mammoth Lakes, Mono, 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.