Poseidon Solar, LLC
Solar power plant · GILA County, Arizona
Nameplate capacity
20 MW
Rank in Arizona
#129
of 200 plants
In service since
2011
December 2011
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- Axium Arizona Renewables, LLC
- County
- GILA County
- Generating units
- 1
- Share of state capacity
- 0.05%
- Rank among solar plants in Arizona
- #48 of 105
- EIA plant code
- 57318
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Solar Photovoltaic | 20 MW | 20 MW | 2011 | 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
| Desert Star Hybrid | Battery storage | 20 MW |
| Picture Rocks Solar, LLC | Solar | 20 MW |
| Sulphur Springs | Solar | 20 MW |
| Headgate Rock | Hydro | 20 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 20 MW solar plant and a 20 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