South River BESS Phase 1
Battery storage power plant · Middlesex County, New Jersey
Details
- Primary fuel
- Battery storage
- Technology
- Batteries
- Operator
- —
- County
- Middlesex County
- Generating units
- 1
- Share of state capacity
- 0.05%
- Rank among battery storage plants in New Jersey
- #7 of 12
- EIA plant code
- 70239
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| SOUR1 | Batteries | 9.9 MW | 9.9 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 New Jersey
| New Road Solar, LLC | Solar | 10 MW |
| South River 2 | Battery storage | 10 MW |
| Berry Plastics Solar | Solar | 9.8 MW |
| Cinnamon Bay Edgeboro Landfill | Other | 9.6 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 9.9 MW solar plant and a 9.9 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 New Jersey power plants · What New Jersey actually generates