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Energy Secretary Backs Three Mile Island Unit 1 Restart in Site Visit

Regulatory decisions will determine whether Constellation’s 2027 timeline holds.

Overview

  • DOE has closed a $1 billion low‑interest loan for the project, the first under the rebranded Energy Dominance Financing Program.
  • Microsoft has a 20‑year agreement to purchase the plant’s output, with its energy lead reaffirming the company’s commitment at the event.
  • Constellation plans to reinvest financing savings to accelerate work and targets a summer 2027 return pending NRC, SRBC, and PJM sign‑offs.
  • CEO Joseph Dominguez said staffing and fuel are on track for 2027 while warning that PJM interconnection timing is the largest schedule risk.
  • Energy Secretary Chris Wright touted efforts to keep firm capacity online, citing more than 15 GW of closures averted and recent DOE orders for coal units, as locals voiced safety and economic concerns tied to the site’s 1979 history.