McFarland B Solar and Storage
Solar power plant · Yuma County, Arizona
Nameplate capacity
450 MW
Rank in Arizona
#33
of 200 plants
In service since
2024
December 2024
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- AES Clean Energy
- County
- Yuma County
- Generating units
- 2
- Share of state capacity
- 1.05%
- Rank among solar plants in Arizona
- #4 of 105
- EIA plant code
- 66637
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| MCFRB | Solar Photovoltaic | 300 MW | 300 MW | 2024 | Operating |
| BESS | Batteries | 150 MW | 150 MW | 2024 | 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
| West Camp Wind Farm | Wind | 500 MW |
| Roadrunner Solar and BESS | Battery storage | 470 MW |
| Sun Streams 3 | Solar | 430 MW |
| Yucca | Natural gas | 422 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 450 MW solar plant and a 450 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