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
NERC Region
WECC
Balancing Authority
Arizona Public Service Company
Grid Voltage
69 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
4.8K MWh
Latest Month
97.8K MWh
Annual Generation
15.3%
Capacity Factor
$4,152/kW
Installed Cost
Arizona Public Service Company
Reporting Utility
Cumulative Installed Cost
Per-Unit Cost Trends
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
APS seeks license extension for Palo Verde Nuclear Plant
Arizona Public Service (APS) plans to renew operating licenses for all three units at Palo Verde Generating Station, extending operations to the mid-2060s, ensuring continued energy supply.
DOE nixes $1.8B loan to Arizona Public Service for transmission, renewables and storage
Additional de-obligations are in process but cannot be publicly disclosed until finalized,” said Olivia Tinari, deputy press secretary for...
Last updated 2026-03-25
View all articles