182.5 MW BESS operating in Monterey, CA — California Independent System Operator
182.5 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2022
Operating Since
Coordinates
36.8080, -121.7818
County
Monterey, CA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Pacific Gas & Electric Co. | — | — |
| Owner(s) | Pacific Gas & Electric Co. | — | — |
| Status | Operating | — | — |
The Elkhorn Battery Energy Storage System is a 182.5 MW battery storage facility located in Monterey County, California. The plant, which began operating in 2022, is owned and operated by Pacific Gas & Electric Co. It is connected to the California Independent System Operator (CAISO) balancing authority within the Western Electricity Coordinating Council (WECC) NERC region. The facility consists of a single generator utilizing battery technology with a total storage capacity of 730 MWh, providing a duration of 4 hours. The battery chemistry is lithium-ion (LIB).
Elkhorn BESS is ranked as the 74th largest power plant in California out of 112, and 340th nationally out of 514. The plant's primary fuel is listed as MWH, reflecting its role as an energy storage facility rather than a generator of electricity from a primary fuel source.
Generated from EIA, GEM, and public data sources
NERC Region
WECC
Balancing Authority
California Independent System Operator
Grid Voltage
115 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
−156 MWh
Net Charging
-2.2K MWh
Annual Net Energy
-0.1%
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.
No financial data available for this plant.
Market Position
ISO/RTO Market
CAISO
LMP Node
ELKHRN_1_EESX3-APND
Pricing Hub
TH_ZP26_GEN-APND
Location Type
Aggregated Node
Node Source
Curated node match
PG&E delays recommissioning of California BESS adjacent to fire-hit Moss Landing project to next year
PG&E has pushed back recommissioning of the Elkhorn battery energy storage system (BESS) by approximately one year, to 30 June 2026.
PG&E delays recommissioning of California BESS adjacent to fire-hit Moss Landing project to next year
PG&E has pushed back recommissioning of the Elkhorn battery energy storage system (BESS) by approximately one year, to 30 June 2026.
PG&E intends to put California BESS adjacent to fire-hit Moss Landing project back into service by June
California utility Pacific Gas and Electric (PG&E) has announced its intent to return the Elkhorn battery energy storage system (BESS) to service by 1 June.
Worst-case scenario: County official calls for ‘independent investigation’ of Moss Landing battery fire
Monterey County Supervisor Glenn Church and State Assemblymember Dawn Addis are calling for the Vistra Moss Landing Battery Energy Storage facility in Moss...
Last updated 2026-03-26
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