Ashburnham Energy Storage Project
Battery storage power plant · Worcester County, Massachusetts
Details
- Primary fuel
- Battery storage
- Technology
- Batteries
- Operator
- Massachusetts Mun Wholes Electric Co
- County
- Worcester County
- Generating units
- 1
- Share of state capacity
- 0.02%
- Rank among battery storage plants in Massachusetts
- #19 of 38
- EIA plant code
- 62219
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| AMLPB | Batteries | 3.0 MW | 3.0 MW | 2019 | 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
| 205 Sturbridge A | Solar | 3.0 MW |
| Adams Farm Solar | Solar | 3.0 MW |
| BWC Wading River One, Two, Three CSG | Solar | 3.0 MW |
| Beebe Substation Battery Storage | Battery storage | 3.0 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 3.0 MW solar plant and a 3.0 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