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45 MW BESS operating in San Bernardino, CA — California Independent System Operator
45 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2024
Operating Since
Coordinates
35.0325, -117.3567
County
San Bernardino, CA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Terra-Gen Operating Co-Solar | — | — |
| Owner(s) | Terra-Gen Operating Co-Solar | — | — |
| Status | Operating | — | — |
Lockhart ESS, LLC is a 45 MW battery energy storage system (BESS) located in San Bernardino County, California. The plant began operating in 2024 and is owned and operated by Terra-Gen Operating Co-Solar. It is interconnected to the California Independent System Operator (CAISO) balancing authority within the Western Electricity Coordinating Council (WECC) NERC region. The facility ranks as the 162nd largest power plant in California out of 300, and 625th nationally out of 1205.
The Lockhart ESS facility utilizes batteries as its primary fuel source (MWH). The BESS has a total storage capacity of 180 MWh, providing a duration of 4 hours. The battery chemistry is Lithium Ion (LIB). The plant consists of a single generator.
Generated from EIA, GEM, and public data sources
ISO/RTO
CAISO
Market
ISO/RTO Member
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
−794 MWh
Net Charging
-9.2K MWh
Annual Net Energy
-2.3%
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: $61.2M
Market Position
ISO/RTO Market
CAISO
LMP Node
LCKHT1_7_N001
Pricing Hub
TH_SP15_GEN-APND
Location Type
Pricing Node
Node Source
Curated node match
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California Independent System Operator (CISO)
Grid Voltage
220.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP