The Oyster Creek nuclear reactor in New Jersey will be shut down by 2019, at least 10 years before its license expires, in a deal with state environmental regulators that will allow it to operate until then without building costly cooling towers.
Exelon is the nation’s largest nuclear operator, with 17 reactors.
There are 104 operable nuclear reactors in the United States. The last two to be retired was the Zion plant north of Chicago, built by Exelon’s predecessor, Commonwealth Edison, and Millstone I, in Waterford, Conn., both in 1998.
Connecticut Yankee, in the town of Haddam Neck, closed in 1996, and Maine Yankee, in Wiscasset, in 1997.