Ameren Missouri chairman and president Mark Birk called the updated plan "an acceleration of things that we would’ve done in the future," in an interview Friday.

"What we're building at Bull Run is not a science project," an executive from the Knoxville-based nuclear fusion company said.

Shipping nuclear propulsion start-up CORE POWER, which in November of last year announced a deal with Westinghouse for design and development of floating nuclear power plants (FNPPs), has hired an ...