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Mammoth G2

Brownfield

Mammoth Lakes, Mono, California · Ormat Nevada Inc

Legacy capacity
15
MW

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

Former useformer geothermal site
Site typeretired_plant
Existing capacity15 MW
Retirement date2013-04-01
EIA plant ID#10481

Grid hookup & remediation

Nearest substation0.0 mi
OperatorOrmat Nevada Inc
Operator address85 Casa Diablo, Mammoth Lakes, CA, 93546
Why this site is datacenter-attractive: a former geothermal site of this scale leaves behind a high-capacity grid interconnection that a new load can re-use, frequently shaving years off the interconnection queue. Retired-plant sites also tend to be already zoned for heavy industrial use with established road, rail, and water infrastructure.

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

Total employment (laborshed)6,590
Construction employment454
Land value$3,138/acre

Power economics & interconnection

Commercial power rate24.34¢/kWh
Industrial power rate17.36¢/kWh
Load growth (FERC-714)1.3%

Water & cooling

Water stressHigh
Public water supply2.0 MGD
Industrial water use0.0 MGD
Cooling degree days1,000
Mean annual temp59°F

Hazard, flood & connectivity

FEMA risk index48.0 · Relatively High
Fiber providers3 · 34% served

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.

Candidate sites near Mammoth G2
SiteTypeStateCountyVoltageCapacityQueue waitScore
UPPER GORGESubstation-AdjacentCAMono County230 kV300 MW8.2 yrs50.7
MOMMOTH PACIFIC 1Substation-AdjacentCAMono County115 kV100 MW8.2 yrs47.4
POOLE PHSubstation-AdjacentCAMono County115 kV100 MW8.2 yrs46.5
CONTROL GORGESubstation-AdjacentCAMono County115 kV100 MW8.2 yrs46.4
BISHOP CREEK 3Substation-AdjacentCAMono County115 kV100 MW8.2 yrs46.4
SHERWINSubstation-AdjacentCAMono County115 kV100 MW8.2 yrs46.3
Mine SiteFormer MineCAMono County——6.9 yrs43.6
EC FFE Mono CountyGreenfieldCAMono County——5.7 yrs42.8

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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.

Go deeper than the public screen

This page shows a public slice of the GridCensus dataset for Mammoth G2, Mammoth Lakes, Mono, California. Pro and Enterprise plans unlock the full 147,272-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.

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