Sun Streams 4
Solar power plant · Maricopa County, Arizona
Nameplate capacity
600 MW
Rank in Arizona
#28
of 205 plants
In service since
2025
March 2025
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- Sun Streams Expansion, LLC
- County
- Maricopa County
- Generating units
- 2
- Share of state capacity
- 1.33%
- Rank among solar plants in Arizona
- #4 of 119
- EIA plant code
- 67291
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GEN01 | Solar Photovoltaic | 300 MW | 300 MW | 2025 | Operating |
| GEN02 | Batteries | 300 MW | 300 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
| Eleven Mile Solar Center | Solar | 600 MW |
| Harquahala 2 | Solar | 600 MW |
| Kyrene | Natural gas | 596 MW |
| Maricopa Solar | Solar | 550 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 600 MW solar plant and a 600 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