Edwards Sanborn S3 — Plant Summary
- EIA Plant ID
- 64928
- Capacity
- 70.7 MW
- Primary Fuel
- Solar
- Technology
- Batteries, Solar Photovoltaic
- Status
- Operating
- Location
- Kern, CA
- Operating Since
- 2022
- Generators
- 2
- Operator
- Terra-Gen Operating Co-Hybrid
- Parent Company
- —
- Annual Generation
- 83,773 MWh
- Capacity Factor
- 13.5%
- Balancing Authority
- California Independent System Operator
- ISO/RTO
- CAISO
- NERC Region
- WECC
Edwards Sanborn S3
OperatingBESSSolarHybrid
Ranked #127 of 963 Solar plants in CA#1178 of 7447 nationally
70.7 MW Batteries (33 MW) + Solar Photovoltaic (38 MW) operating in Kern, CA — California Independent System Operator
EIAGEMWD
70.7 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
2022
Operating Since
Location
Coordinates
35.0164, -118.1225
County
Kern, CA
Nearby Plants
- Edwards Sanborn S4BESS60 MW · 0.5 km
- Edwards Sanborn S1BESS84.6 MW · 1.6 km
- Sanborn BESS 1BESS100 MW · 1.9 km
Ownership & Operator
Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Terra-Gen Operating Co-Hybrid | Terra-Gen | — |
| Owner(s) | ES 1A Group 2 Opco, LLC | Terra-Gen [100%] | — |
| Status | Operating | operating | — |
Ownership Chain
GEM identifies the owner as Terra-Gen [100%]
This entity is not yet in the GEM ownership database — chain unavailable.
About
Edwards Sanborn S3 is a hybrid power plant located in Kern County, California. The plant, which came online in 2022, has a total capacity of 70.7 MW and is operated by Terra-Gen Operating Co-Hybrid. It utilizes both solar photovoltaic and battery storage technologies, with two generators on site. The battery energy storage system (BESS) has a capacity of 70 MWh and a duration of 2.12 hours, using lithium-ion battery chemistry (LIB). The solar component employs single-axis tracking.
The plant's latest annual generation was 83,773 MWh, resulting in a capacity factor of 13.5%. Edwards Sanborn S3 operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. It is ranked as the 138th largest plant in California out of 300, and 560th nationally out of 1205. Financial data is available for the plant from LBNL, though specific figures are not provided.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
California Independent System Operator
Grid Voltage
230 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
3.6K MWh
Latest Month
83.8K MWh
Annual Generation
13.5%
Capacity Factor
Jan 2023 – Dec 2025
Financial DataBeta
Source: LBNL Utility-Scale SolarHIGH
$25.0/MWh
LCOE (Levelized Cost)
$9.9/MWh
Energy Value
Pricing & Market Data
HIGH confidenceMarket Position
ISO/RTO Market
CAISO
LMP Node
PHSP15
Pricing Hub
TH_SP15_GEN-APND
Node Source
EIA-860 direct report
News & Articles (1)Beta