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30 MW BESS operating in San Diego, CA — California Independent System Operator
30 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2021
Operating Since
Coordinates
32.8762, -117.1678
County
San Diego, CA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | San Diego Gas & Electric Co | San Diego Gas & Electric | — |
| Owner(s) | San Diego Gas & Electric Co | Sempra Energy | — |
| Status | Operating | — | — |
Top Gun Energy Storage is a 30 MW battery energy storage system located in San Diego County, California. The plant began operating in 2021 and is owned by Sempra Energy, with San Diego Gas & Electric Co. (SDG&E) as the operator. The facility utilizes batteries as its primary fuel source (MWH) and employs battery energy storage system (BESS) technology. It has a total storage capacity of 120 MWh, providing a duration of 4 hours. The battery chemistry is lithium-ion (LIB).
The plant operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. Top Gun Energy Storage is ranked as the 170th largest power plant in California out of 300, and nationally it is ranked 651st out of 1205.
Generated from EIA, GEM, and public data sources
ISO/RTO
CAISO
Market
ISO/RTO Member
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
−514 MWh
Net Charging
-6.0K 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.
2021
$1,796/kW
Est. Construction Cost
Total estimated cost: $53.9M
Point of Interconnection
Nearest Substation
Miramar Gt
Substation Distance
< 10 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
CAISO
LMP Node
—
Pricing Hub
TH_SP15_GEN-APND
Node Source
Shared substation inference
Substation identified. Node ID not yet resolved against ISO roster.
Last updated 2026-03-26
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ask pi about Top Gun Energy StorageCalifornia Independent System Operator (CISO)
Grid Voltage
69.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility