Allatoona Substation #10
Battery storage power plant · Cobb County, Georgia
Nameplate capacity
10 MW
Rank in Georgia
#141
of 267 plants
In service since
2026
June 2026
Details
- Primary fuel
- Battery storage
- Technology
- Batteries
- Operator
- Cobb Electric Membership Corporation
- County
- Cobb County
- Generating units
- 1
- Share of state capacity
- 0.02%
- Rank among battery storage plants in Georgia
- #3 of 3
- EIA plant code
- 69688
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| BES02 | Batteries | 10 MW | 10 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 Georgia
| Fort Valley State University Solar | Solar | 11 MW |
| State Farm Support Center East | Other | 11 MW |
| McIntosh Solar | Solar | 10 MW |
| MCLB Biosteam to Energy | Other | 8.5 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 10 MW solar plant and a 10 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 Georgia power plants · What Georgia actually generates