If everything goes to plan, a nuclear reactor at the famous Three Mile Island power plant in Pennsylvania—the site of a major accident in the '70s—will be restarted by power company Constellation Energy to fulfill an agreement with Microsoft for carbon-free energy to power its data centers.
The reactor coming back online is not the one that had a partial meltdown in 1979, which has remained dormant since the accident. That was TMI-Unit 2. The adjacent reactor, TMI-Unit 1, went back into operation in 1985 and continued to operate until 2019, when it was shut down due to "poor economics," according to Constellation.
