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130 MW Batteries (50 MW) + Solar Photovoltaic (80 MW) under construction in San Bernardino, CA
130 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
—
Operating Since
Coordinates
34.9880, -117.5716
County
San Bernardino, CA
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | 91MC 8me LLC | — | — |
| Owner(s) | 91MC 8me LLC | — | — |
| Status | Under construction | construction | — |
Aratina Solar Center 1B is a 325 MW hybrid power plant located in San Bernardino County, California. The facility, identified by plant ID 61167, is owned and operated by 91MC 8me LLC. The plant utilizes both solar photovoltaic technology and batteries, with electricity designated as its primary fuel type. It consists of two generators employing fixed-tilt solar tracking.
The plant operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. Aratina Solar Center 1B holds the rank of 28th largest among 112 power plants in California and 126th nationally out of 514 plants. The plant has been the subject of 10 news articles, with coverage focusing on regulatory matters (7 articles), deals (2 articles), and industry news (1 article).
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
220.0 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: $442.3M
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Point of Interconnection
Nearest Substation
Segs 7
Substation Distance
2.643 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
CAISO
LMP Node
SUNGEN_1_B1
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.
Last updated 2026-03-26
View all 5 articlesTop solar plant owners in the US
Data tables and metrics from the InfraSure database.
Top solar plant owners in the US
Data tables and metrics from the InfraSure database.
Top 10 solar states
Data tables and metrics from the InfraSure database.
Forward forecasts, scenario decomposition, and risk-decision tooling for this asset.