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10 MW BESS operating in San Diego, CA — California Independent System Operator
10 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2024
Operating Since
Coordinates
32.8256, -117.1832
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 | — | — |
Clairemont Energy Storage is a 10 MW battery energy storage system located in San Diego County, California. The plant began operating in 2024 and has one generator. It is owned by Sempra Energy and operated by San Diego Gas & Electric Co (SDG&E), a subsidiary of Sempra. The facility utilizes lithium-ion batteries (LIB) and has a total storage capacity of 10 MWh, providing a duration of 1 hour. The plant's primary fuel is listed as 'MWH', indicating that it draws power from the grid to charge its batteries.
Clairemont Energy Storage operates within the California Independent System Operator (CAISO) balancing authority, part of the Western Electricity Coordinating Council (WECC) NERC region. It ranks as the 199th largest power plant in California out of 300, and 758th nationally out of 1205. The plant's technology is classified as Batteries (BESS).
Generated from EIA, GEM, and public data sources
ISO/RTO
CAISO
Market
ISO/RTO Member
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
−90 MWh
Net Charging
-1.1K MWh
Annual Net Energy
-1.3%
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.
2023
$1,361/kW
Est. Construction Cost
Total estimated cost: $13.6M
Point of Interconnection
Nearest Substation
Clairemont Substation · 69 kV
Substation Distance
0.007 km
Operator
San Diego Gas & Electric
Coord Source
OSM spatial
Market Position
ISO/RTO Market
CAISO
LMP Node
CLRMNT_6_N001
Pricing Hub
TH_SP15_GEN-APND
Location Type
Pricing Node
Node Source
Curated node match
Last updated 2026-03-26
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ask pi about Clairemont Energy StorageCalifornia Independent System Operator (CISO)
Grid Voltage
12.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility