Elliott Energy Storage — Plant Summary
- EIA Plant ID
- 66278
- Capacity
- 10 MW
- Primary Fuel
- Battery Storage
- Technology
- Batteries
- Status
- Operating
- Location
- San Diego, CA
- Operating Since
- 2024
- Generators
- 1
- Operator
- San Diego Gas & Electric Co
- Parent Company
- Sempra Energy
- Annual Generation
- -1,186 MWh
- Capacity Factor
- -1.4%
- Balancing Authority
- California Independent System Operator
- ISO/RTO
- CAISO
- NERC Region
- WECC
Elliott Energy Storage
OperatingBESS
Ranked #131 of 191 BESS plants in CA#537 of 837 nationally
10 MW BESS operating in San Diego, CA — California Independent System Operator
EIA
10 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2024
Operating Since
Location
Coordinates
32.8164, -117.0889
County
San Diego, CA
Nearby Plants
- ISH Solar Hospital SDMCSolar1.1 MW · 2.8 km
- Kearny Mesa Storage LLCBESS1 MW · 3.5 km
- El Cajon Energy StorageBESS7.5 MW · 3.6 km
Ownership & Operator
| 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 | — | — |
Ownership Chain
About
Elliott Energy Storage is a 10 MW battery energy storage system located in San Diego County, California. The plant, which began operating in 2024, utilizes one battery generator with lithium-ion (LIB) chemistry. The facility has a total storage capacity of 10 MWh, providing a duration of 1 hour at its full power output. San Diego Gas & Electric Co, a subsidiary of Sempra Energy, operates the plant.
The plant interconnects to the California Independent System Operator (CAISO) balancing authority within the Western Electricity Coordinating Council (WECC) NERC region. Elliott Energy Storage is ranked as the 198th largest power plant in California out of 300, and 766th nationally out of 1205.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
California Independent System Operator
Grid Voltage
12 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
−105 MWh
Net Charging
-1.2K MWh
Annual Net Energy
-1.4%
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.
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
Kearny Substation · 69 kV
Substation Distance
0.068 km
Operator
San Diego Gas & Electric
Coord Source
OSM spatial
Market Position
ISO/RTO Market
CAISO
LMP Node
ELLIOTT_6_N004
Pricing Hub
TH_SP15_GEN-APND
Location Type
Pricing Node
Node Source
Curated node match
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