continued to operate at full capacity with no interruption of power to customers. An "unusual event" was detected at 10:44 A.M on January 6, 2022. According to an alert from the United States Nuclear Regulatory Commission, a potential fire was detected, but there was no fire. Seismic risk The Nuclear Regulatory Commission's estimate of the risk each year of an earthquake intense enough to cause core damage to the reactor at D.C. Cook was 1 in 83,333, according to an NRC study updated in June 2018. Additional information See also List of largest power stations in the United States References External links Aerial photos of the Cook plant Cook Nuclear Power Plant Page U.S. Nuclear Regulatory Commission Information Page for Unit 1 U.S. Nuclear Regulatory Commission Information Page for Unit 2 Energy infrastructure completed in 1975 Energy infrastructure completed in 1978 Buildings and structures in Berrien County, Michigan Nuclear power plants in Michigan Nuclear power stations using pressurized water reactors 1975 establishments in Michigan American Electric Power