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300 MW Batteries (150 MW) + Solar Photovoltaic (150 MW) under construction in San Bernardino, CA
300 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
—
Operating Since
Coordinates
35.0162, -117.3570
County
San Bernardino, CA
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Overnight Solar LLC | — | — |
| Owner(s) | Overnight Solar LLC | — | — |
| Status | Under construction | announced | — |
Overnight Solar is a 300 MW hybrid power plant located in San Bernardino County, California. The facility, owned and operated by Overnight Solar LLC, combines solar photovoltaic generation with battery storage. It consists of two generators utilizing both batteries and solar photovoltaic technologies. The plant's solar arrays employ a fixed tilt tracking system.
As a participant in the California Independent System Operator (CAISO) market, Overnight Solar contributes to grid stability within the Western Electricity Coordinating Council (WECC) region. The plant ranks as the 34th largest in California out of 112 facilities and holds the 143rd position nationally among 514 power plants. The plant's primary fuel is listed as MWH, reflecting its reliance on solar energy and battery storage.
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
No generation data available for this plant.
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2023
$1,361/kW
Est. Construction Cost
Total estimated cost: $408.3M
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Market Position
ISO/RTO Market
CAISO
LMP Node
LCKHT1_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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