Three Mile Island Unit 1 restart (2024-2026)
Constellation Energy shut the 837-megawatt Pennsylvania reactor in 2019. In 2024 it struck a power deal with Microsoft and announced plans to restart, then secured a $1 billion federal loan for the work.
The project is the first restart tied to a major tech power purchase, with a target return in the late 2020s.
It set the template of tech companies backing nuclear restarts with long-term contracts and federal financing.
Duane Arnold follows the same playbook: a shuttered plant, an anchor tech buyer, and government money.
