Company announced their intent to seek federal funding for a new generation of nuclear reactors to be installed at the Callaway site. The U.S. Department of Energy could provide up to $452 million in research and development funds to Westinghouse. The new reactors would be smaller and, the companies claimed, safer in design than any currently operating. Ameren Missouri was to apply to license up five of the 225-megawatt reactors at the Callaway site, more than doubling its current electrical output.

In August 2015, a month after Ameren