Edwards Sanborn E4 — Plant Summary
- EIA Plant ID
- 65675
- Capacity
- 248.9 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
- 321,301 MWh
- Capacity Factor
- 14.7%
- Balancing Authority
- California Independent System Operator
- ISO/RTO
- CAISO
- NERC Region
- WECC
Edwards Sanborn E4
OperatingBESSSolarHybrid
Ranked #49 of 963 Solar plants in CA#239 of 7447 nationally
248.9 MW Batteries (100 MW) + Solar Photovoltaic (149 MW) operating in Kern, CA — California Independent System Operator
EIAGEM
248.9 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
2022
Operating Since
Location
Coordinates
34.9436, -118.0880
County
Kern, CA
Nearby Plants
- Edwards Sanborn E1BBESS290.4 MW · 2.3 km
- Sanborn BESS 4BESS47 MW · 2.4 km
- Edwards Sanborn E5BESS115 MW · 2.6 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) | EdSan 1B Group 1 Sanborn, 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
Located in Kern County, California, the Edwards Sanborn E4 power plant is a hybrid facility combining solar photovoltaic generation with battery energy storage. The plant, owned and operated by Terra-Gen Operating Co-Hybrid, came online in 2022. It has a total capacity of 248.9 MW and consists of two generators utilizing both solar and battery technologies. The battery energy storage system (BESS) has a capacity of 100 MWh, a duration of 1 hour, and uses lithium-ion battery (LIB) chemistry. The solar component uses single-axis tracking.
The Edwards Sanborn E4 plant operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. In its latest year of operation, the plant generated 321,301 MWh, resulting in a capacity factor of 14.7%. The plant is ranked 52nd out of 112 power plants in California and 213th out of 514 plants nationally. Financial data is available for the plant from LBNL, though specific metrics 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
Interconnection Queue1 projectBeta
SAGEBRUSH SOLAR 5
WithdrawnSolar223.56 MWCAISO
Generation
14.5K MWh
Latest Month
321.3K MWh
Annual Generation
14.7%
Capacity Factor
Jan 2023 – Dec 2025
Financial DataBeta
Source: LBNL Utility-Scale SolarHIGH
$34.2/MWh
LCOE (Levelized Cost)
$10.0/MWh
Energy Value
Pricing & Market Data
MEDIUM confidenceMarket Position
ISO/RTO Market
CAISO
LMP Node
—
Pricing Hub
TH_SP15_GEN-APND
Node Source
Shared substation inference
PHSP15Nearby ISO Node
News & Articles (1)Beta