Sanborn BESS 2 — Plant Summary
- EIA Plant ID
- 64713
- Capacity
- 100 MW
- Primary Fuel
- Battery Storage
- Technology
- Batteries
- Status
- Operating
- Location
- Kern, CA
- Operating Since
- 2021
- Generators
- 1
- Operator
- Terra-Gen Operating Co-BESS
- Parent Company
- —
- Annual Generation
- -22,845 MWh
- Capacity Factor
- -2.6%
- Balancing Authority
- California Independent System Operator
- ISO/RTO
- CAISO
- NERC Region
- WECC
Sanborn BESS 2
OperatingBESS
Ranked #54 of 191 BESS plants in CA#316 of 837 nationally
100 MW BESS operating in Kern, CA — California Independent System Operator
EIAWD
100 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2021
Operating Since
Location
Coordinates
35.0273, -118.1401
County
Kern, CA
Nearby Plants
- Sanborn BESS 3BESS169 MW · 0.1 km
- Sanborn BESS 1BESS100 MW · 0.1 km
- Edwards Sanborn S1BESS84.6 MW · 0.7 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Terra-Gen Operating Co-BESS | — | — |
| Owner(s) | Terra-Gen Operating Co-BESS | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
Sanborn BESS 2 is a 100 MW battery energy storage system located in Kern County, California. The plant began operating in 2021 and has one generator. It is owned and operated by Terra-Gen Operating Co-BESS. The facility utilizes lithium-ion (LIB) battery chemistry and has a total storage capacity of 400 MWh, providing a duration of 4 hours at full output.
The plant's primary fuel is electricity (MWH), indicating it charges from the grid. Sanborn BESS 2 operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. It is ranked as the 111th largest power plant in California out of 112, and 485th nationally out of 514.
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
−1.7K MWh
Net Charging
-22.8K MWh
Annual Net Energy
-2.6%
Capacity Factor
Jan 2023 – Dec 2025
Positive values indicate net discharge (generation exceeds station load). Negative values indicate net charging. Pure battery storage plants are typically net negative due to round-trip efficiency losses.
Financial Data
No financial data available for this plant.
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
PHSP15Substation
News & Articles (10)Beta
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AES completes phase one construction of largest solar-plus-storage project in the US
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Energy-Storage.News·9 months ago
Industry·technology
Top 5: Largest BESS Projects in the World in 2025
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Industry·corporate
US’ biggest solar-plus-storage power plant a sign of things to come, says Primergy
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Energy-Storage.News·1 years ago
Last updated 2026-03-26
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