Nameplate capacity
62 MW
Rank in Massachusetts
#31
of 686 plants
In service since
2015
January 2015
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- FirstLight Power Resources, Inc. - MA
- County
- Franklin County
- Generating units
- 6
- Share of state capacity
- 0.44%
- Rank among hydro plants in Massachusetts
- #3 of 32
- EIA plant code
- 1629
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | 10 MW | 10 MW | 2015 | Operating |
| 2 | Conventional Hydroelectric | 10 MW | 10 MW | 2015 | Operating |
| 3 | Conventional Hydroelectric | 10 MW | 10 MW | 2016 | Operating |
| 4 | Conventional Hydroelectric | 10 MW | 10 MW | 2016 | Operating |
| 5 | Conventional Hydroelectric | 10 MW | 10 MW | 2017 | Operating |
| 6 | Conventional Hydroelectric | 10 MW | 10 MW | 2017 | 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
| MMWEC Simple Cycle Gas Turbine | Natural gas | 65 MW |
| Waters River | Natural gas | 65 MW |
| Wheelabrator Saugus | Other | 58 MW |
| Wheelabrator Millbury Facility | Other | 48 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 62 MW solar plant and a 62 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