Dwight

Hydro power plant · Hampden County, Massachusetts

Nameplate capacity
1.2 MW
Rank in Massachusetts
#603
of 686 plants
In service since
2020
January 2020

Details

Primary fuel
Hydro
Technology
Conventional Hydroelectric
Operator
Central Rivers Power MA, LLC
County
Hampden County
Generating units
3
Share of state capacity
0.01%
Rank among hydro plants in Massachusetts
#31 of 32
EIA plant code
6378

Generating units

Individual generating units at Dwight
UnitTechnologyNameplateSummerOnlineStatus
DW2Conventional Hydroelectric0.4 MW0.4 MW2020Operating
DW3Conventional Hydroelectric0.4 MW0.4 MW2020Operating
DW4Conventional Hydroelectric0.4 MW0.4 MW2020Operating

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

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 1.2 MW solar plant and a 1.2 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