The US Department of Energy's Office of Nuclear Energy counts 13 nuclear plants, with 25 reactors in total, that had received second license renewals as of June 2026. DOE calls the group the 80 Club, after the 80-year operating span those extensions allow.

Nine of the 13 plants are in Florida, Virginia, South Carolina, Alabama and Georgia. DOE's graphics list the extended license dates. Browns Ferry in Limestone County, Alabama, has three units rated at 1,200, 1,200 and 1,210 MWe, extended through December 2053, June 2054 and July 2056. Edwin I. Hatch in Baxley, Georgia, has units of 876 and 883 MWe, extended through August 2054 and June 2058. St. Lucie in Jensen Beach, Florida, runs through March 2056 for Unit 1 and April 2063 for Unit 2. H.B. Robinson Unit 2 in Hartsville, South Carolina, is extended through July 2050.

Outside the Southeast, Dresden in Grundy County, Illinois, is extended through December 2049 for Unit 2 and June 2051 for Unit 3. Commercial service dates for the group range from April 1970 at Dresden Unit 2 to June 1983 at St. Lucie Unit 2.

DOE reports that the US nuclear fleet generated power 91 percent of the time in 2025, measured by capacity factor. At that rate, DOE estimates a single 1,000 megawatt reactor operating for 80 years could produce around 638 million megawatt-hours, enough to power the equivalent of nearly 740,000 US homes per year. DOE also states that US nuclear plants have generated roughly 40 billion megawatt-hours since the first plants began operating.

Source: U.S. Department of Energy Office of Nuclear Energy - https://www.energy.gov/ne/articles/80-club-celebrating-americas-longest-serving-nuclear-reactors