Escondido Energy Storage — Plant Summary
- EIA Plant ID
- 60570
- Capacity
- 30 MW
- Primary Fuel
- Battery Storage
- Technology
- Batteries
- Status
- Operating
- Location
- San Diego, CA
- Operating Since
- 2017
- Generators
- 1
- Operator
- San Diego Gas & Electric Co
- Parent Company
- Sempra Energy
- Annual Generation
- -142 MWh
- Capacity Factor
- -0.1%
- Balancing Authority
- California Independent System Operator
- ISO/RTO
- CAISO
- NERC Region
- WECC
Escondido Energy Storage
OperatingBESS
Ranked #99 of 191 BESS plants in CA#437 of 837 nationally
30 MW BESS operating in San Diego, CA — California Independent System Operator
EIAWD
30 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2017
Operating Since
Location
Coordinates
33.1244, -117.1143
County
San Diego, CA
Nearby Plants
- Escondido Energy CenterNatural Gas54 MW · 0.3 km
- CalPeak Power Enterprise Peaker PlantNatural Gas58.9 MW · 0.4 km
- Enterprise BESSBESS54.1 MW · 0.4 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
Escondido Energy Storage is a 30 MW battery energy storage system located in San Diego County, California. The plant began operating in 2017 and is owned by Sempra Energy, with San Diego Gas & Electric Co. as the operator. The facility utilizes batteries as its primary fuel source (MWH) and employs battery storage technology. It consists of one generator. The battery energy storage system (BESS) 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. Escondido Energy Storage is ranked as the 171st largest power plant in California out of 300, and 652nd 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
12.5 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
−17 MWh
Net Charging
-142 MWh
Annual Net Energy
-0.1%
Capacity Factor
Jan 2023 – Dec 2025
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
Escondido Substation · 230 kV
Substation Distance
0.12 km
Operator
San Diego Gas & Electric
Coord Source
OSM spatial
Market Position
ISO/RTO Market
CAISO
LMP Node
BESSGEN_7_N001
Pricing Hub
TH_SP15_GEN-APND
Location Type
Pricing Node
Node Source
Curated node match
News & Articles (10)Beta
General
Mexico’s CFE plans 180MW solar-storage plant
CFE plans to build the Río Escondido solar-storage plant in Coahuila, with operations set to start in February 2028 and financing...
BNamericas·2 months ago
General
Renewable Energy Update 11.20.25
California added 1200 MW of battery energy storage to its electrical grid over the last six months, officials said.
JD Supra·4 months ago
Deals·project finance
A solar/battery project looks to offset hefty electric bills at wastewater facility
Officials predict the $3.2 million project in Escondido will pay for itself in about 20 years.
Escondido (other)
San Diego Union-Tribune·4 months ago
Regulatory·permitting
Escondido keeps battery storage ban while county drafts rules
The Escondido City Council on Oct. 1 extended its citywide moratorium on battery energy storage projects for a final time.
Escondido City Council (regulator)
The Coast News Group·5 months ago
Last updated 2026-03-26
View all 10 articles