Perry was originally designed as a two-unit installation, but construction on Unit 2 was suspended in 1985 and formally cancelled in 1994. At the time of cancellation, all of the major buildings and structures for the second unit were completed, including the cooling tower. It is possible that a second unit could be constructed on the site, but current economic and regulatory conditions are not conducive to doing so (in addition to back taxes that would be due to the "abandon in place" designations on many objects in Unit 2). Eleven hundred acres at the Perry plant were designated in 1993 as an urban wildlife sanctuary by the National Institute for Urban Wildlife. The area has trees, shrubs, streams and ponds; and a habitat for heron, belted kingfisher, ducks and geese. The forested area is ideal for the crane-fly orchid, a rare species in Ohio. The site includes a wetland that contains spotted turtles, an endangered species in Ohio. On March 28, 2010, there was a fire in a lubrication system for one of the water pumps that feeds water for generation of steam. Reactor power automatically lowered to 68% due to the reduction in feed water flow, and the fire was extinguished in less than three hours. Two plant fire brigade personnel were brought to a local hospital for "heat stress" following the fire. No customers lost power during this event. On February 9, 2016, the plant was unexpectedly shut down for maintenance to a recirculation pump. The reactor was brought back to full power by February 20, 2016. In addition to Perry,
Vistra Corp also owns and operates the
Davis-Besse and
Beaver Valley nuclear plants. This license renewal for Unit 1 was officially approved on July 7, 2025 and will now expire November 7, 2046. In March 2024, Texas-based
Vistra Corp announced it had completed an acquisition of Energy Harbor Corp. and its nuclear generation fleet assets, which was previously announced in March 2023. == Electricity production ==