💧 Hydroelectric Power Plants in Connecticut
Connecticut operates 15 hydroelectric power plants totaling 165 MW of nameplate capacity. Annual generation: 470.1k MWh.
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.
Plants15operating
Capacity165 MWnameplate
Generation470.1k MWhannual
All Connecticut hydroelectric plants
| Plant | City | County | Capacity | Operator |
|---|---|---|---|---|
| Shepaug | Southbury | New Haven County | 37 MW | Firstlight Power Resources Services Llc |
| Rocky River (Ct) | New Milford | Litchfield County | 31 MW | Firstlight Power Resources Services Llc |
| Stevenson | Monroe | Fairfield County | 31 MW | Firstlight Power Resources Services Llc |
| Tunnel | Preston | New London County | 21 MW | Firstlight Power Resources Services Llc |
| Falls Village | Falls Village | Litchfield County | 9 MW | Firstlight Power Resources Services Llc |
| Derby Hydro | Shelton | Fairfield County | 9 MW | Mccallum Enterprises I Lp |
| Rainbow (Ct) | Windsor | Hartford County | 8 MW | Farmington River Power Company |
| Bulls Bridge | New Milford | Litchfield County | 7 MW | Firstlight Power Resources Services Llc |
| Goodwin Hydroelectric | W. Hartland | Hartford County | 3 MW | Metropolitan Dist Of Hartford |
| Quinebaug Lower Project | Brooklyn | Windham County | 3 MW | Quinebaug Associates Llc |
| Kinneytown New Old | Seymour | New Haven County | 2 MW | Hydroland Omega Llc |
| Scotland Dam | Windham | Windham County | 2 MW | Firstlight Power Resources Services Llc |
| Taftville | Taftville | New London County | 2 MW | Firstlight Power Resources Services Llc |
| Tenth Street | Norwich | New London County | 1 MW | City Of Norwich - (Ct) |
| Colebrook Hydroelectric | Colebrook | Litchfield County | — | Metropolitan Dist Of Hartford |