Pennsylvania plant unit, which functioned until 2019 after near meltdown in 1979 of an adjacent unit, is set to boost the tech giant's data centers, while Michigan's Palisades nuclear plant will get $1.5B from feds to revamp the site, the US Energy Dept. said Sept. 30—but new concerns have been raised related to both facility restarts.

Global developers are advancing nuclear fusion technology and engineering to scale an energy source they say has zero emissions, no meltdown risk and more security, as data centers and AI push power demand.