CD4

CD4 is a 44.4 MW operating geothermal plant in Mono County, California, operated by CD4.

Plant statusOperating

Planning (completed)
Consented (completed)
Construction (completed)
OperatingJul 2022 (current stage)
Closed (not yet reached)

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Generators

Each generating unit EIA lists at this plant.

Unit	Technology	Capacity	Status	Online	Retired / planned retirement
OEC1	Geothermal	44 MW	Operating	Jul 2022

Plant details

Operator: CD4
Location: Mono County, California
Balancing authority: CISO
Sector: IPP Non-CHP
Capacity: Operating: 44.4 MW
First unit online: Jul 2022
EIA plant ID: 63490

Location

37.6461, -118.9158

Nearby power plants

Mammoth G1Geothermal plants · 10.0 MW · 0.1 mi
Mammoth G3Geothermal plants · 15.0 MW · 0.3 mi
Mammoth G2Geothermal plants · 15.0 MW · 0.4 mi
Rush CreekHydroelectric plants · 13.1 MW · 14.1 mi
Upper GorgeHydroelectric plants · 37.5 MW · 19.1 mi
Middle GorgeHydroelectric plants · 37.5 MW · 21.2 mi
Control GorgeHydroelectric plants · 37.5 MW · 24.4 mi
PooleHydroelectric plants · 11.3 MW · 26.3 mi
Pleasant Valley HydroHydroelectric plants · 3.2 MW · 26.8 mi
PortalHydroelectric plants · 10.8 MW · 30.0 mi

Source: U.S. Energy Information Administration, Form EIA-860M, September 2026. Planned dates are targets reported by the developer and often change. Report a problem