Hydroelectric power plants in Pennsylvania
16 operating hydroelectric power plants in Pennsylvania with 916 MW of hydroelectric capacity, largest first. From EIA-860M, August 2026.
Largest hydroelectric power plants in Pennsylvania
| # | Plant | Hydroelectric MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | Safe HarborLancaster County | 418 | 861 | 23.5% |
| 2 | HoltwoodLancaster County | 247 | 833 | 38.5% |
| 3 | Lake Lynn Hydro StationFayette County | 51 | 93.9 | 20.9% |
| 4 | WallenpaupackWayne County | 40 | 67.3 | 19.2% |
| 5 | PineyClarion County | 30 | 62.2 | 23.7% |
| 6 | William F Matson Generating StationHuntingdon County | 22 | 81.2 | 42.7% |
| 7 | York HavenYork County | 20 | 95.7 | 55.7% |
| 8 | Allegheny Hydro No 9Armstrong County | 18 | 86.4 | 55.4% |
| 9 | Conemaugh Hydro PlantWestmoreland County | 15 | 43.3 | 33.0% |
| 10 | Allegheny Hydro No 8Armstrong County | 14 | 79.6 | 66.8% |
| 11 | Yough Hydro PowerSomerset County | 12 | 38.2 | 35.7% |
| 12 | Allegheny No. 5 Hydro StationArmstrong County | 9.2 | 35.4 | 43.9% |
| 13 | Allegheny No 6 Hydro StationArmstrong County | 9.2 | 35.6 | 44.2% |
| 14 | Mahoning Creek Hydroelectric ProjectArmstrong County | 6.0 | 13.1 | 25.0% |
| 15 | Townsend HydroBeaver County | 5.2 | 14.2 | 31.1% |
| 16 | Beaver Valley Patterson DamBeaver County | 0.8 | 4.4 | 42.2% |
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
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