Chemical
Hydro power plant · Hampden County, Massachusetts
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- City of Holyoke Gas and Electric Dept.
- County
- Hampden County
- Generating units
- 2
- Share of state capacity
- 0.01%
- Rank among hydro plants in Massachusetts
- #27 of 32
- EIA plant code
- 1604
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | 0.8 MW | 0.8 MW | 1935 | Operating |
| 2 | Conventional Hydroelectric | 0.8 MW | 0.8 MW | 1935 | 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
| ZPD-PT Solar Project 2017-021 LLC Hybrid | Solar | 1.7 MW |
| BWC Swan Pond River CSG | Solar | 1.6 MW |
| Chicopee Granby Road Solar | Solar | 1.6 MW |
| Dartmouth Solar | Solar | 1.6 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 1.6 MW solar plant and a 1.6 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