Boott Hydropower
Hydro power plant · Middlesex County, Massachusetts
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- Boott Hydro, LLC - Hybrid
- County
- Middlesex County
- Generating units
- 3
- Share of state capacity
- 0.16%
- Rank among hydro plants in Massachusetts
- #6 of 32
- EIA plant code
- 10556
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GEN3 | Conventional Hydroelectric | 7.9 MW | 7.5 MW | 1985 | Operating |
| GEN1 | Conventional Hydroelectric | 7.5 MW | 7.1 MW | 1985 | Operating |
| GEN2 | Conventional Hydroelectric | 7.5 MW | 7.1 MW | 1985 | 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
| New England Wind LLC | Wind | 29 MW |
| Outer Cape Community Battery | Battery storage | 25 MW |
| Nantucket Hybrid | Other | 22 MW |
| Central Heating Plant | Natural gas | 20 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 23 MW solar plant and a 23 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