McFarland C
Battery storage power plant · Yuma County, Arizona
Nameplate capacity
185 MW
Rank in Arizona
#56
of 200 plants
In service since
2025
May 2025
Details
- Primary fuel
- Battery storage
- Technology
- Batteries
- Operator
- AES Clean Energy
- County
- Yuma County
- Generating units
- 1
- Share of state capacity
- 0.43%
- Rank among battery storage plants in Arizona
- #13 of 35
- EIA plant code
- 67498
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| MCFRC | Batteries | 185 MW | 185 MW | 2025 | 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
| Westwing | Battery storage | 200 MW |
| Wilmot Energy Center II | Battery storage | 200 MW |
| Saguaro | Natural gas | 185 MW |
| White Wing Solar | Solar | 179 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 185 MW solar plant and a 185 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