Work on the EPR started in 1989 with the first reactor starting commercial operation 2018. That's almost 30 years for an evolutionary Gen III design. Bringing m

Work on the EPR started in 1989 with the first reactor starting commercial operation 2018. That's almost 30 years for an evolutionary Gen III design. Bringing more revolutionary Gen IV designs to market will take probably even longer, and that's not speaking about mass roll out. We don't have that time to prevent a climate disaster. It really makes sense though to keep existing nuclear plants running as long as their safety can be guaranteed.