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73 MW Batteries (35 MW) + Solar Photovoltaic (38 MW) operating in Yuma, AZ — Arizona Public Service Company
73 MW
Nameplate Capacity
3
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
2013
Operating Since
Coordinates
32.6486, -114.4287
County
Yuma, AZ
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Arizona Public Service Co | Arizona Public Service | — |
| Owner(s) | Arizona Public Service Co | Pinnacle West Capital | — |
| Status | Operating | operating | — |
Foothills Solar Plant Hybrid is a 73 MW solar photovoltaic and battery storage hybrid facility located in Yuma County, Arizona. The plant, which began operating in 2013, is owned by Pinnacle West Capital and operated by Arizona Public Service Co. It interconnects to the Arizona Public Service Company balancing authority within the Western Electricity Coordinating Council (WECC) NERC region. The facility ranks as the 25th largest of 93 solar plants in Arizona, and 989th nationally out of 7108 plants.
The hybrid plant consists of 3 generators utilizing single-axis solar tracking. It is augmented by a 105 MWh lithium-ion battery energy storage system (BESS) providing 3 hours of duration. The plant's latest annual generation was 97,802 MWh, yielding a capacity factor of 15.3%. Financial data indicates an installed cost of $4,094.66 per kW.
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
69.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
4.8K MWh
Latest Month
97.8K MWh
Annual Generation
15.3%
Capacity Factor
Data from 2013–2024
$12.6/MWh
Energy Value
$26.1/MWh
Capacity Value
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
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