Peach Bottom

Constellation Energy Generation, LLCYork CountyPJM

Peach Bottom, in York County, Pennsylvania, is a two-unit boiling water reactor plant that can generate 2,770 MW. Constellation owns half and operates it; PSEG owns the other half. Units 2 and 3 began operating in 1974 and gained an extended power uprate approved in 2014. On September 30, 2025 the NRC restored their subsequent renewed licenses to August 8, 2053 and July 2, 2054, making Peach Bottom licensed for up to 80 years. Unit 1, an HTGR shut in 1974, remains in SAFSTOR.