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600 MW Batteries (300 MW) + Solar Photovoltaic (300 MW) operating in Maricopa, AZ
600 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
2025
Operating Since
Coordinates
33.4600, -113.1100
County
Maricopa, AZ
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Copia Power | — | — |
| Owner(s) | Copia Power | — | — |
| Status | Operating | operating | — |
Harquahala 2 is a 600 MW hybrid power plant located in Maricopa County, Arizona. The facility, which began operating in 2025, combines solar photovoltaic generation with battery energy storage. It is owned and operated by Copia Power. The plant utilizes fixed-tilt solar tracking and its battery energy storage system (BESS) has a duration of 4 hours. Harquahala 2 ranks as the 13th largest power plant in Arizona out of 47, and 48th nationally out of 514.
The plant's primary fuel source is listed as MWH, reflecting its reliance on solar energy. In its latest year of operation, Harquahala 2 generated 647,592 MWh of electricity, achieving a capacity factor of 16.3%. The plant consists of 2 generators and operates within the Arizona Public Service Company balancing authority, under the Western Electricity Coordinating Council (WECC) NERC region.
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
250.0 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.
43.4K MWh
Net Discharge
647.6K MWh
Annual Net Energy
16.3%
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.
Forward-looking generation outlook with probabilistic ranges across weather, demand, and policy scenarios. Powered by InfraSure's generation modeling stack.
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2023
$1,361/kW
Est. Construction Cost
Total estimated cost: $816.6M
Forward revenue, DSCR bands, and refinancing risk projected under price, demand, and policy scenarios. Powered by InfraSure's asset cashflow stack.
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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 2026-03-26
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