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Three Mile Island’s Unit 1 Set to Reopen in 2027 Ahead of Schedule

Constellation Energy is fast-tracking grid connection under a 20-year Microsoft power deal to meet rising data center energy demand.

A cooling tower is seen at the Three Mile Island Nuclear power plant, during a tour by Constellation Energy in Middletown, Pennsylvania, U.S., October 16, 2024. REUTERS/Shannon Stapleton/File Photo
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Overview

  • Constellation Energy has secured about 64% of its workforce by hiring more than 400 employees and training licensed reactor operators.
  • The restart project entails over $1.6 billion in upgrades and is projected to create roughly 650 permanent jobs in central Pennsylvania.
  • Plans to integrate artificial intelligence aim to enhance operational efficiency and safety at the modernized plant.
  • The Nuclear Regulatory Commission will visit in July to observe operator training and inspect technical readiness for the license amendment.
  • Local residents and environmental groups have raised safety, transparency and waste storage concerns during recent NRC hearings.