Where is Edwards Sanborn S4?

In Kern 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 Edwards Sanborn S4?

60 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.

Who owns Edwards Sanborn S4?

EIA-860M names Terra-Gen Operating Co-Hybrid as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.

Is this the same as Edwards Sanborn S4 LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Terra-Gen Operating Co-Hybrid here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Edwards Sanborn S4 LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Edwards Sanborn S4 still running?

EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.

Edwards Sanborn S4

Edwards Sanborn S4 is a 60 MW solar farm in Kern County, California, operated by Terra-Gen Operating Co-Hybrid. EIA-860M lists 2 generating units here, inside CAISO. Its units entered service between 2022 and 2023.

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: 60 MW; 60 MW net summer
Generating units: 2
In service: 2022–2023
EIA plant ID: 65677

Where it is

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County: Kern County, California
Coordinates: 35.0125, -118.1193
Balancing authority: CISO
Sector: IPP Non-CHP

Units, technology and status

Operator of record: Terra-Gen Operating Co-Hybrid
Primary energy source: Solar
Technologies: Batteries, Solar Photovoltaic
Status: Operating

This site runs on more than one energy source. EIA-860M capacity splits: Solar 41 MW, Battery 19 MW. It is filed here under Solar, the source with the most capacity.

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

Edwards Sanborn S4: FAQ

Where is Edwards Sanborn S4?: In Kern 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 Edwards Sanborn S4?: 60 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.
Who owns Edwards Sanborn S4?: EIA-860M names Terra-Gen Operating Co-Hybrid as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
Is this the same as Edwards Sanborn S4 LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Terra-Gen Operating Co-Hybrid here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Edwards Sanborn S4 LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Edwards Sanborn S4 still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.