“Constellation expects the Unit 1 reactor at Three Mile Island — to be renamed the Crane Clean Energy Center — to come back online in 2028, subject to Nuclear Regulatory Commission approval, returning 835 MW of carbon-free nuclear power to the grid under a 20-year power purchase agreement that matches the electricity Microsoft's data centers consume in the PJM region.”

Still on track as of September 2026: Constellation has since pulled the target forward to 2027, FERC approved a capacity-rights transfer from Eddystone in June 2026, and NRC restart review (including a finding of no significant environmental impact) is ongoing.