37th largest plant in Massachusetts · 4088th nationally
Hadley Falls is a hydroelectric power plant in Massachusetts with a nameplate capacity of 33.4 MW. It generates roughly 218.2k MWh per year — enough to power about 20,779 average U.S. homes.
Its capacity factor of 75% puts it in the middle range — running steadily but not full-time.
| Plant Name | Hadley Falls |
|---|---|
| Operator | City Of Holyoke Gas And Electric Dept. |
| City | Holyoke |
| County | Hampden County |
| State | Massachusetts |
| ZIP | 01040 |
| Coordinates | 42.21190, -72.60360 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | Water | 17.6 MW | Operating | 1952 |
| 2 | Conventional Hydroelectric | Water | 15.8 MW | Operating | 1983 |
| 3 | Conventional Hydroelectric | Water | 3.5 MW | Cancelled | — |
| NERC Region | NPCC |
|---|---|
| Balancing Authority | Iso New England Inc. |
Hydroelectric plants spin turbines using falling or flowing water — typically from a dam-impounded reservoir. They are dispatchable, long-lived, and emission-free at the point of generation, though large reservoirs can disrupt rivers and ecosystems and methane can be released from flooded vegetation.