The power plant was originally built by Niagara Mohawk Power Corporation. FitzPatrick and half of the Nine Mile Point site were transferred to the Power Authority of the State of New York (PASNY), now called the New York Power Authority (NYPA). It was named after Power Authority Chairman James A. FitzPatrick. On November 2, 2015, Entergy Corp. announced its plans to shut down FitzPatrick Nuclear Power Plant in Oswego County after the reactor runs out of fuel in 2016. To avoid closure, Exelon Generation agreed to purchase the plant from Entergy at the price of $110 million.