United States › Power plants › Battery storage › Arizona
BATTERY STORAGERomero Energy Center II, LLC
Romero Energy Center II, LLC is a 225 MW under construction battery storage site in Maricopa County, Arizona, operated by Romero Energy Center II, LLC.
Plant statusUnder construction
- Planning (completed)
- Consented (completed)
- Construction (current stage)
- OperatingTarget Jun 2028 (not yet reached)
- Closed (not yet reached)
Planned start of operation reported to EIA: Jun 2028.
Generators
Each generating unit EIA lists at this plant.
| Unit | Technology | Capacity | Status |
|---|---|---|---|
| REC02 | Batteries | 225 MW | Under construction (up to 50%) |
Plant details
- Operator
- Romero Energy Center II, LLC
- Location
- Maricopa County, Arizona
- Balancing authority
- AZPS
- Sector
- IPP Non-CHP
- Capacity
- Under construction: 225 MW
- EIA plant ID
- 70194
Location
33.5091, -113.0080
Nearby power plants
- Romero Energy CenterBattery storage · 225 MW · 0.0 mi
- Papago Energy StorageBattery storage · 300 MW · 2.5 mi
- Papago PVSolar farms · 150 MW · 2.6 mi
- Desert Sand BESSSolar farms, Battery storage · 600 MW · 2.6 mi
- Harquahala Generating ProjectGas power plants · 1,277 MW · 6.5 mi
- Maricopa SolarSolar farms, Battery storage · 1,100 MW · 6.7 mi
- Harquahala 2Solar farms, Battery storage · 600 MW · 6.8 mi
- Harquahala Sun Solar ProjectSolar farms · 150 MW · 8.7 mi
- Badger 1Solar farms · 14.8 MW · 11.2 mi
- Saddleback Generation StationGas power plants · 1,250 MW · 11.6 mi
Source: U.S. Energy Information Administration, Form EIA-860M, September 2026. Planned dates are targets reported by the developer and often change. Report a problem