Pennsylvania's Nuclear Power Plants

Beaver Valley Power Station (BVPS) is owned by Energy Harbor. 
Beaver Valley Power Station Units 1 and 2 are pressurized water reactors, each rated at 852 megawatts electrical (Mwe). The facility is situated on the south bank of the Ohio River in Shippingport Borough, Beaver County, Pennsylvania. 
Beaver Valley Power Station

Limerick Generating Station (LGS) is owned by Exelon. 
Limerick Generating Station Units 1 and 2 are boiling water reactors, each rated at 1090 megawatts electrical (Mwe). The facility is located on the east bank of the Schuylkill River in Limerick Township, Montgomery County, Pennsylvania. 
Limerick Generating Station, Unit 1
Limerick Generating Station, Unit 2

Peach Bottom Atomic Power Station (PBAPS) is owned by Constellation Energy. 
Bottom Atomic Power Station Units 2 and 3 are boiling water reactors, each rated at 1065 megawatts electrical (Mwe). The facility is located on the west bank of the Conowingo Pond of the Susquehanna River in Peach Bottom Township, York County, Pennsylvania. 
Peach Bottom Atomic Power Station, Unit 2
Peach Bottom Atomic Power Station, Unit 3

Susquehanna Steam Electric Station (SSES) is owned by Susquehanna Nuclear. 
Susquehanna Steam Electric Station Units 1 and 2 are boiling water reactors, each rated at 1180 megawatts electrical (Mwe). The site is located on the west bank of the Susquehanna River in Salem Township, Luzerne County, Pennsylvania. 
Susquehanna Steam Electric Station

Three Mile Island Nuclear Station (TMI) is owned by Exelon. 
Three Mile Island Nuclear Station Unit 1 is a pressurized water reactor, rated at 871 megawatts electrical (Mwe). The facility is located on an island in the Susquehanna River, Londonderry Township, Dauphin County, Pennsylvania. 
Three Mile Island Nuclear Station, Unit 1

US Nuclear Regulatory Commission List of Pennsylvania's Operating Nuclear Power Reactors 

US Energy Information Administration Pennsylvania Nuclear Profile—2020