250 MW BESS operating in San Diego, CA — California Independent System Operator
250 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2020
Operating Since
Coordinates
32.5706, -116.9106
County
San Diego, CA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Gateway Energy Storage, LLC | — | — |
| Owner(s) | Gateway Energy Storage, LLC | — | — |
| Status | Operating | — | — |
Gateway Energy Storage is a large-scale battery storage power station, operated by grid infrastructure developer LS Power. It has 250 MW of power and a storage capacity of 250 MWh, using lithium-ion battery cells from LG Chem.
Read more on WikipediaThe Gateway Energy Storage System is a 250 MW battery energy storage facility located in San Diego County, California. The plant, which began operating in 2020, is owned and operated by Gateway Energy Storage, LLC. It is connected to the California Independent System Operator (CAISO) balancing authority within the Western Electricity Coordinating Council (WECC) region. The facility is ranked 51st out of 112 power plants in California and 198th out of 514 plants nationally.
The Gateway facility utilizes batteries as its primary fuel source (MWH). The battery energy storage system (BESS) has a total storage capacity of 700 MWh, providing a duration of 2.8 hours. The battery chemistry is lithium-ion (LIB).
Generated from EIA, GEM, and public data sources
NERC Region
WECC
Balancing Authority
California Independent System Operator
Grid Voltage
230 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
0 MWh
Net Discharge
-19.0K MWh
Annual Net Energy
-0.9%
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.
No financial data available for this plant.
Market Position
ISO/RTO Market
CAISO
LMP Node
OTAYMGT1_7_N001
Pricing Hub
TH_SP15_GEN-APND
Location Type
Pricing Node
Node Source
Curated node match
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Last updated 2026-03-26
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