Hydroelectric power plants in Connecticut
13 operating hydroelectric power plants in Connecticut with 115 MW of hydroelectric capacity, largest first. From EIA-860M, August 2026.
Plants
13
Hydroelectric capacity
115 MW
Net generation, 2025
280 GWh
12 of 13 plants reported
Largest hydroelectric power plants in Connecticut
| # | Plant | Hydroelectric MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | ShepaugNew Haven County | 37 | 93.3 | 28.6% |
| 2 | StevensonFairfield County | 31 | 70.8 | 26.5% |
| 3 | Falls VillageLitchfield County | 9.0 | 25.7 | 32.6% |
| 4 | Rainbow (CT)Hartford County | 8.0 | 20.9 | 29.8% |
| 5 | Derby HydroFairfield County | 8.0 | 22.7 | 30.1% |
| 6 | Bulls BridgeLitchfield County | 7.2 | 26.9 | 42.6% |
| 7 | Wyre Wynd Hydroelectric ProjectNew London County | 2.8 | – | – |
| 8 | Quinebaug Lower ProjectWindham County | 2.5 | 5.4 | 24.6% |
| 9 | Kinneytown New OldNew Haven County | 2.3 | 0.0 | – |
| 10 | Scotland DamWindham County | 2.0 | 3.8 | 21.8% |
| 11 | TunnelNew London County | 2.0 | 5.9 | 3.3% |
| 12 | TaftvilleNew London County | 1.6 | 2.2 | 16.0% |
| 13 | Tenth StreetNew London County | 1.4 | 1.9 | 15.8% |
Projects where hydroelectric is the largest fuel or at least a fifth of nameplate capacity. MW is hydroelectric nameplate only; net generation covers the whole project. Source: EIA-860M August 2026, published 2026-09-24, and EIA-923 2025. Page updated 2026-10-04. Data sources