Seneca Pumped Storage Generating Station
| Company type | Power station |
|---|---|
| Industry | Hydroelectric power generation |
| Founded | 1970 |
| Headquarters | Warren , United States |
Area served | Pennsylvania, United States |
| Products | Electricity |
| Owner | LS Power (since 2013) |
The Seneca Pumped Storage Generating Station is a hydroelectric facility that employs pumped storage technology to produce electricity. It is situated near Warren in Warren County, Pennsylvania.
This generating station is positioned alongside the Kinzua Dam, which was constructed by the United States Army Corps of Engineers to manage the Allegheny River for flood mitigation and hydroelectric power purposes. The dam resulted in the creation of the Allegheny Reservoir, which stretches approximately 25 miles upstream, nearly reaching Salamanca, New York, within the Allegany Reservation of the Seneca Nation. Annually, the station generates around 570,000 megawatt-hours and has yielded substantial profits since its commissioning in 1970.
With a capacity of 451 MW, the plant was built by Pennsylvania Electric Company and Cleveland Electric Illuminating Company, beginning commercial operations in 1970. Ownership eventually passed to FirstEnergy after various mergers and acquisitions; this company also operated several base load nuclear and coal power plants. In 2013, FirstEnergy divested Seneca along with ten other hydroelectric facilities to LS Power based in New York City.
Pumped storage plants function similarly to energy storage batteries by utilizing surplus electricity during off-peak periods to pump water into an elevated reservoir. This water is then released during times of high demand to generate electricity. However, due to inherent inefficiencies in the process, the facility consumes more electricity than it produces overall.