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169 MW BESS operating in Kern, CA — California Independent System Operator
169 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2023
Operating Since
Coordinates
35.0270, -118.1395
County
Kern, CA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Terra-Gen Operating Co-BESS | — | — |
| Owner(s) | EdSan 1B Group 3, LLC | — | — |
| Status | Operating | — | — |
Sanborn BESS 3 is a battery energy storage system located in Kern County, California. The plant has a total capacity of 169 MW and utilizes batteries as its primary fuel source, specifically lithium-ion batteries (LIB). It consists of a single generator and has a total storage capacity of 676 MWh, providing a duration of 4 hours at full output. The facility began operating in 2023 and is owned and operated by Terra-Gen Operating Co-BESS.
The plant operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. Sanborn BESS 3 ranks as the 77th largest power plant in California out of 112, and nationally it ranks 358th out of 514.
Generated from EIA, GEM, and public data sources
ISO/RTO
CAISO
Market
ISO/RTO Member
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
−2.6K MWh
Net Charging
-32.9K MWh
Annual Net Energy
-2.2%
Capacity Factor
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.
2023
$1,361/kW
Est. Construction Cost
Total estimated cost: $230.0M
Market Position
ISO/RTO Market
CAISO
LMP Node
—
Pricing Hub
TH_SP15_GEN-APND
Node Source
Shared substation inference
Last updated 2026-03-26
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ask pi about Sanborn BESS 3California Independent System Operator (CISO)
Grid Voltage
230.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP