Foothills Solar Plant Hybrid
Battery storage power plant · Yuma County, Arizona
Nameplate capacity
73 MW
Rank in Arizona
#96
of 200 plants
In service since
2013
March 2013
Details
- Primary fuel
- Battery storage
- Technology
- Batteries
- Operator
- Arizona Public Service Co
- County
- Yuma County
- Generating units
- 3
- Share of state capacity
- 0.17%
- Rank among battery storage plants in Arizona
- #23 of 35
- EIA plant code
- 57997
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| FH38M | Batteries | 35 MW | 35 MW | 2023 | Operating |
| PV2 | Solar Photovoltaic | 20 MW | 20 MW | 2013 | Operating |
| PV1 | Solar Photovoltaic | 18 MW | 18 MW | 2013 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Arizona
| Red Horse 2 | Solar | 81 MW |
| Pluto Energy Storage | Battery storage | 75 MW |
| Gila Bend Hybrid | Solar | 68 MW |
| Poseidon Wind, LLC | Wind | 65 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 73 MW solar plant and a 73 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Arizona power plants · What Arizona actually generates