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450 MW Batteries (250 MW) + Solar Photovoltaic (200 MW) under construction in Maricopa, AZ
450 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
—
Operating Since
Coordinates
33.5806, -112.6867
County
Maricopa, AZ
Nearby Plants
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Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | 311SV 8me, LLC | DE Shaw Renewable Investments (DESRI) | — |
| Owner(s) | 311SV 8me, LLC | DE Shaw Renewable Investments (DESRI) | — |
| Status | Under construction | pre-construction | — |
GEM identifies the owner as DE Shaw Renewable Investments (DESRI)
This entity is not yet in the GEM ownership database — chain unavailable.
Catclaw Solar is a 450 MW hybrid power plant located in Maricopa County, Arizona. The facility, identified by plant ID 68414, is owned and operated by 311SV 8me, LLC. It utilizes both solar photovoltaic technology and battery storage. The plant consists of two generators and employs a fixed tilt solar tracking system.
Catclaw Solar is interconnected to the Arizona Public Service Company balancing authority within the Western Electricity Coordinating Council (WECC) NERC region. It ranks as the 19th largest power plant in Arizona out of 47, and 80th nationally out of 514. The primary fuel source is listed as MWH, indicating electricity generation.
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
Arizona Public Service Company (AZPS)
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
$1,544/kW
Est. Construction Cost
Total estimated cost: $694.8M
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This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
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 2026-04-19
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