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126 MW BESS operating in Kern, CA — California Independent System Operator
126 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2025
Operating Since
Coordinates
34.8780, -118.3470
County
Kern, CA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Leeward Asset Management, LLC | — | — |
| Owner(s) | Leeward Asset Management, LLC | — | — |
| Status | Operating | — | — |
The AVEP BESS is a 126 MW battery energy storage system located in Kern County, California. The plant began operating in 2025 and is owned and operated by Leeward Asset Management, LLC. It consists of a single generator utilizing batteries as its energy source, with a storage duration of 4 hours.
The AVEP BESS operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. In terms of size, the plant ranks 93rd out of 112 battery storage facilities in California and 426th out of 514 nationally.
Generated from EIA, GEM, and public data sources
ISO/RTO
CAISO
Market
ISO/RTO Member
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
−2.5K MWh
Net Charging
-17.2K MWh
Annual Net Energy
-2.1%
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: $171.5M
Market Position
ISO/RTO Market
CAISO
LMP Node
RATTLSNK_7_RB1N001
Pricing Hub
TH_SP15_GEN-APND
Location Type
Pricing Node
Node Source
Curated node match
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ask pi about AVEP BESSCalifornia Independent System Operator (CISO)
Grid Voltage
115.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP