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This is the control room for the Unit 1 reactor at Exelon Corporation Three Mile Island nuclear generating station in Londonderry Township, Dauphin County. 
May 22, 2017.

What will become of Three Mile Island’s nuclear waste if the plant closes?

In the absence of a long-term solution, the country’s nuclear power plants are left with one option: indefinite on-site storage.

By Wallace McKelvey/PennLive

Exelon says it will close Three Mile Island's Unit One reactor in September 2019.

Three Mile Island’s future looks bleaker as it fails at power auction

The nuclear industry has struggled amid slowing demand for electricity and competition from natural gas and renewable energy.

By Marie Cusick