Plant Operation

Three Mile Island Nuclear Plant ‘On Track’ To 2027 Restart Following Grid Connection Waiver

By Nigel Davies
4 June 2026

Constellation Energy granted grid waiver from Federal Energy Regulatory Commission

Three Mile Island Nuclear Plant ‘On Track’ To 2027 Restart Following Grid Connection Waiver
Unit 1 at Three Mile Island was shut down in 2019 over economic concerns and after failing to secure the subsidies needed to compete with cheaper alternatives. Courtesy Wikipedia.
US power company Constellation Energy remains on target to restart operations of the Three Mile Island nuclear power station in Pennsylvania by 2027 following a waiver from the Federal Energy Regulatory Commission (Ferc) over grid connection rights.

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