Holden BESS 1
Battery storage power plant · Worcester County, Massachusetts
Details
- Primary fuel
- Battery storage
- Technology
- Batteries
- Operator
- Holden BESS 1 LLC
- County
- Worcester County
- Generating units
- 1
- Share of state capacity
- 0.04%
- Rank among battery storage plants in Massachusetts
- #10 of 38
- EIA plant code
- 67186
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 90913 | Batteries | 5.0 MW | 5.0 MW | 2024 | 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 Massachusetts
| French King Solar LLC | Solar | 5.0 MW |
| Granby Solar, LLC CSG | Solar | 5.0 MW |
| Holiday Hill Community Wind | Wind | 5.0 MW |
| Hudson | Solar | 5.0 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 5.0 MW solar plant and a 5.0 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 Massachusetts power plants · What Massachusetts actually generates