Edwards Sanborn E2 — Plant Summary
- EIA Plant ID
- 64879
- Capacity
- 257.8 MW
- Primary Fuel
- Solar
- Technology
- Batteries, Solar Photovoltaic
- Status
- Operating
- Location
- Kern, CA
- Operating Since
- 2021
- Generators
- 2
- Operator
- Terra-Gen Operating Co-Hybrid
- Parent Company
- —
- Annual Generation
- 300,808 MWh
- Capacity Factor
- 13.3%
- Balancing Authority
- California Independent System Operator
- ISO/RTO
- CAISO
- NERC Region
- WECC
Edwards Sanborn E2
OperatingBESSSolarHybrid
Ranked #38 of 963 Solar plants in CA#179 of 7447 nationally
257.8 MW Batteries (120 MW) + Solar Photovoltaic (138 MW) operating in Kern, CA — California Independent System Operator
EIAGEMWD
257.8 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
2021
Operating Since
Location
Coordinates
34.9415, -118.1290
County
Kern, CA
Nearby Plants
- Edwards Sanborn E3BESS38.1 MW · 0.6 km
- Edwards Sanborn E1ABESS293.3 MW · 2.3 km
- Sanborn BESS 4BESS47 MW · 2.7 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) | Terra-Gen Operating Co-Hybrid | 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 E2 is a hybrid power plant located in Kern County, California. The plant, which came online in 2021, is owned and operated by Terra-Gen Operating Co-Hybrid. It has a total capacity of 257.8 MW and consists of two generators utilizing both solar photovoltaic and battery storage technologies. The battery energy storage system (BESS) has a capacity of 250 MWh and a duration of 2.08 hours, employing lithium-ion battery chemistry (LIB). The solar component uses dual-axis tracking.
The 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, Edwards Sanborn E2 generated 300,808 MWh, resulting in a capacity factor of 13.3%. The plant is ranked as the 47th largest in California out of 112 plants and 190th nationally out of 514 plants. Financial data is available for the plant from LBNL, and it has been featured in 10 news articles, primarily covering industry and grid-related topics.
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
LONGSPUR 10
WithdrawnSolar263.84 MWCAISO
Generation
12.9K MWh
Latest Month
300.8K MWh
Annual Generation
13.3%
Capacity Factor
Jan 2023 – Dec 2025
Financial DataBeta
Source: LBNL Utility-Scale SolarHIGH
$26.3/MWh
LCOE (Levelized Cost)
$10.0/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 (10)Beta
Industry·technology
Solar and Batteries Go Big in the Desert
A chart-topping solar-plus-storage project in the Mojave became fully operational in January 2024. NASA Earth Observatory. Feb 07, 2024. Article.
NASA (other)
NASA Science (.gov)·3 months ago
Grid·outage
How mega batteries are unlocking an energy revolution
As the evening drew in on a sweltering mid-August day in 2020, California's strained electricity grid buckled. Amid an intense heatwave,...
Financial Times·5 months ago
Industry·technology
We’ve unlocked a holy grail in clean energy. It’s only the beginning.
True grid-scale battery storage won't just be an enabler of clean energy, but a way to upgrade the power system for a new era.
Vox·11 months ago
Industry·technology
Top 5: Largest BESS Projects in the World in 2025
Here's a list of the top 5 largest BESS projects in the world based on their rated power as of now. #1 Edwards & Sanborn Rated Power: 821 MW
Saur Energy·11 months ago
Last updated 2026-03-14
View all 10 articles