Regulatory Commission's estimate of the risk each year of an earthquake intense enough to cause core damage to the reactor at Dresden was 1 in 52,632, according to an NRC study published in August 2010. Averted closure In August 2020, Exelon announced they would close the plant in November 2021 for economic reasons, despite the plant having licenses to operate for about another 10 years and the ability to renew the licenses for an additional 20 years beyond that. On September 13, 2021, the Illinois state senate passed a bill subsidizing the Byron and Dresden nuclear plants, which Governor JB Pritzker signed into law on September 15, and Exelon announced it would refuel the plants. Notes References External links http://www.eia.gov/cneaf/nuclear/state_profiles/illinois/il.html#_ftn4 https://www.nrc.gov/info-finder/decommissioning/power-reactor/dresden-nuclear-power-station-unit-1.html Energy infrastructure completed in 1960 Energy infrastructure completed in 1970 Energy infrastructure completed in 1971 Nuclear power plants in Illinois Buildings and structures in Grundy County, Illinois Illinois River Exelon