Montague Site 36-Grosolar
Solar power plant · Franklin County, Massachusetts
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- NSTAR Electric Company
- County
- Franklin County
- Generating units
- 1
- Share of state capacity
- 0.03%
- Rank among solar plants in Massachusetts
- #127 of 531
- EIA plant code
- 62092
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| REC34 | Solar Photovoltaic | 4.1 MW | 4.1 MW | 2018 | 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
| Cranberry Highway Solar LLC | Solar | 4.2 MW |
| DG Crystal Spring CSG | Solar | 4.2 MW |
| UMass PV Lot 22 | Solar | 4.1 MW |
| West Groton CHP | Natural gas | 4.1 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 4.1 MW solar plant and a 4.1 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