Catclaw Solar
Battery storage power plant · Maricopa County, Arizona
Details
- Primary fuel
- Battery storage
- Technology
- Batteries
- Operator
- 311SV 8me, LLC
- County
- Maricopa County
- Generating units
- 2
- Share of state capacity
- 1.00%
- Rank among battery storage plants in Arizona
- #1 of 26
- EIA plant code
- 68414
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| SV | Batteries | 250 MW | 250 MW | 2026 | Operating |
| CC8 | Solar Photovoltaic | 200 MW | 200 MW | 2026 | 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 | Solar | 470 MW |
| McFarland B Solar and Storage | Solar | 450 MW |
| Sun Streams 3 | Solar | 430 MW |
About this data
From EIA’s inventory of operable generators, August 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