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Three Mile Island notifies regulators of intent to close

The Associated Press

HARRISBURG — The owners of the Pennsylvania’s Three Mile Island nuclear plant have formally notified regulators and a regional power grid operator of their previously announced intentions to close the plant.

A Monday, May 22, 2017 file photo shows cooling towers at the Three Mile Island nuclear power plant in Middletown, Pa. Exelon Corp., the owner of Three Mile Island, site of the United States' worst commercial nuclear power accident, said Monday, May 29, 2017 it will shut down the plant in 2019 without a financial rescue from Pennsylvania. (AP Photo/Matt Rourke, File)

LNP newspaper reports Exelon Corp. sent a letter June 20 to the Nuclear Regulatory Commission saying the plant would be shut down around Sept. 30, 2019 due to “severe economic challenges.”

Exelon criticized electrical grid operator PJM Interconnection in a May 30 letter to the company saying PJM has not adapted to changes in the energy market. It said market rules don’t value the “clean, resilient” electricity provided by the plant.

The plant was the site of the United States’ worst commercial nuclear power accident, a 1979 partial core meltdown of one reactor. The other reactor is still in use.