![]() ![]() Unit 2, which has been dormant since the accident in 1979, is expected to close in 2052. Unit 1 decommissioning is expected to be completed in 2079 and will cost $1.2 billion. Unit 1 officially shut down at noon on September 20, 2019. In 2017 the company said it would consider ceasing operations at Unit 1 because of high costs unless there was action from the Pennsylvania government. Įxelon was operating Unit 1 at a financial loss since 2015. On DecemFirstEnergy transferred Unit 2's license over to EnergySolutions' subsidiary TMI-2 Solutions after receiving approval from the NRC. The plant was operated by Metropolitan Edison Company (Met-Ed), a subsidiary of the GPU Energy division. The plant was originally built by General Public Utilities Corporation, later renamed GPU Incorporated. In July 1998, Amergen Energy (now Exelon Generation) agreed to purchase TMI-1 from General Public Utilities for $100 million. The reactor core of TMI-2 has since been removed from the site, but the site has not been fully decommissioned. One work-related death has occurred on-site during decommissioning. Follow-up epidemiology studies did not find causality between the accident and any increase in cancers. According to the Nuclear Regulatory Commission (NRC) report, the accident resulted in no deaths or injuries to plant workers or in nearby communities. The plant was the site of the most significant accident in United States commercial nuclear energy when, on March 28, 1979, TMI-2 suffered a partial meltdown. ![]() It has two separate units, TMI-1 (owned by Constellation Energy) and TMI-2 (owned by EnergySolutions). Three Mile Island Nuclear Generating Station (commonly abbreviated as TMI) is a closed nuclear power plant on Three Mile Island in Londonderry Township, Dauphin County, Pennsylvania on Lake Frederic, a reservoir in the Susquehanna River just south of Harrisburg. our-company /locations /decommissioning. Three Mile Island in 2019, prior to shutdown.Įxelon Three Mile Island Nuclear Generating Station ![]()
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