Lockhart ESS, LLC

Lockhart ESS, LLC is a 45 MW battery storage project in San Bernardino County, California, operated by Terra-Gen Operating Co-Solar. EIA-860M lists 1 generating unit here, inside CAISO. Its unit entered service in 2024.

As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m

Nameplate capacity
45 MW
45 MW net summer
Generating units
1
In service
2024
EIA plant ID
66946

Where it is

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County
San Bernardino County, California
Coordinates
35.0325, -117.3567
Balancing authority
CISO
Sector
IPP Non-CHP

Units, technology and status

Operator of record
Terra-Gen Operating Co-Solar
Primary energy source
Battery
Technologies
Batteries
Status
Operating

Every plant Terra-Gen Operating Co-Solar reports to EIA →

Lockhart ESS, LLC: FAQ

Where is Lockhart ESS, LLC?
In San Bernardino County, California (CA). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
How big is Lockhart ESS, LLC?
45 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
Who owns Lockhart ESS, LLC?
EIA-860M names Terra-Gen Operating Co-Solar as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
Is Lockhart ESS, LLC still running?
EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.