Seneca Generation LLC
Hydro power plant · Warren County, Pennsylvania
Details
- Primary fuel
- Hydro
- Technology
- Hydroelectric Pumped Storage
- Operator
- Seneca Generation LLC
- County
- Warren County
- Generating units
- 3
- Share of state capacity
- 0.82%
- Rank among hydro plants in Pennsylvania
- #2 of 19
- EIA plant code
- 8225
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Hydroelectric Pumped Storage | 206 MW | 225 MW | 1970 | Operating |
| 2 | Hydroelectric Pumped Storage | 206 MW | 208 MW | 1970 | Operating |
| 3 | Conventional Hydroelectric | 26 MW | 30 MW | 1970 | Operating |
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 Pennsylvania
| Croydon CT Generating Station | Other | 546 MW |
| Birdsboro Power | Natural gas | 525 MW |
| Safe Harbor | Hydro | 418 MW |
| Brunot Island | Natural gas | 365 MW |
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 438 MW solar plant and a 438 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 Pennsylvania power plants · What Pennsylvania actually generates