According to its owner, Constellation Energy, the two units are capable of producing 2,317 megawatts of power, which combined would provide electricity to around 2 million households.

The site was chosen and plans to build the station were announced in 1969, by the Philadelphia Electric Company (now PECO Energy, a subsidiary of Exelon).

It is located approximately one mile south of Sanatoga, PA. Community protests by the Keystone Alliance and other delays pushed the start of construction by the Bechtel Power Corporation to June 1974.

Limerick Unit 1 first attained criticality (began producing nuclear power, at limited capacity) on December 22, 1984 and was certified for commercial operation on February 1, 1986.

The tornado narrowly missed the station by two miles, but caused considerable damage to a nearby housing development in Limerick Township.

[3] President George W. Bush visited the Limerick Generating Station in May 2006 to discuss nuclear power and its role in the Advanced Energy Initiative, which he announced at the 2006 State of the Union Address.