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250 MW BESS operating in San Diego, CA
250 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2020
Operating Since
Coordinates
32.5706, -116.9106
County
San Diego, CA
Nearby Plants
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| 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
ISO/RTO
CAISO
Market
ISO/RTO Member
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
California Independent System Operator (CISO)
Grid Voltage
230.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
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.
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2020
$758/kW
Est. Construction Cost
Total estimated cost: $189.5M
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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
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
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