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40 MW BESS operating in San Diego, CA — California Independent System Operator
40 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2018
Operating Since
Coordinates
33.2041, -117.2537
County
San Diego, CA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Vista Energy Storage, LLC | — | — |
| Owner(s) | Vista Energy Storage, LLC | — | — |
| Status | Operating | — | — |
The Vista Energy Storage System is a 40 MW battery energy storage system (BESS) located in San Diego County, California. The plant began operating in 2018 and is owned and operated by Vista Energy Storage, LLC. It is interconnected to the California Independent System Operator (CAISO) balancing authority within the Western Electricity Coordinating Council (WECC) NERC region. The facility utilizes batteries as its primary fuel source (MWH) and consists of a single generator.
The Vista Energy Storage System has a total storage capacity of 38 MWh, providing a duration of approximately 0.95 hours. The battery chemistry is Lithium Ion (LIB). In California, the plant ranks 165th out of 300 facilities and nationally it ranks 628th out of 1205. News coverage of the facility includes hazards, industry, grid, deals, and regulatory topics.
Generated from EIA, GEM, and public data sources
ISO/RTO
CAISO
Market
ISO/RTO Member
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
California Independent System Operator (CISO)
Grid Voltage
69.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
−304 MWh
Net Charging
-3.7K MWh
Annual Net Energy
-1.0%
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.
2018
$1,239/kW
Est. Construction Cost
Total estimated cost: $49.6M
Market Position
ISO/RTO Market
CAISO
LMP Node
MELROSE_6_N005
Pricing Hub
TH_SP15_GEN-APND
Location Type
Pricing Node
Node Source
Curated node match
Last updated 2026-03-26
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