Martinsville BESS
Battery storage power plant · Henry County, Virginia
Nameplate capacity
10 MW
Rank in Virginia
#165
of 261 plants
In service since
2022
April 2022
Details
- Primary fuel
- Battery storage
- Technology
- Batteries
- Operator
- Onsite Partners, LLC
- County
- Henry County
- Generating units
- 1
- Share of state capacity
- 0.03%
- Rank among battery storage plants in Virginia
- #5 of 5
- EIA plant code
- 69727
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| MBSS | Batteries | 10 MW | 10 MW | 2022 | 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 Virginia
| Brunswick Landfill Gas | Other | 11 MW |
| Danville BESS 1 | Battery storage | 11 MW |
| Hecate Energy Clarke County LLC | Solar | 10 MW |
| Buck Hydro | Hydro | 8.4 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 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 Virginia power plants · What Virginia actually generates