Three Mile Island, site of the United States’ worst nuclear power accident, will begin a planned shutdown starting June 1 now that it is clear that it will not get a financial rescue from Pennsylvania, its owner said Wednesday. Exelon Corp.’s statement comes two years after the Chicago-based energy giant threatened to close the money-losing plant without what critics have called a bailout.
Power from the plant along the Susquehanna River is expected to be replaced by electricity from coal and natural gas-fired power plants that run below capacity in a saturated market. It will go offline by Sept. 30, Exelon said. Cleaning up Unit 1, dismantling its buildings and removing spent fuel could take six decades and cost more than $1 billion, Exelon estimates. The destroyed Unit 2 is sealed and twin cooling towers remain standing.