New reactor.

The second new nuclear reactor at Vogtle started delivering electricity on Monday, a momentous milestone for the U.S. nuclear industry that also raises questions about its future, E&E News reports.

Vogtle came in billions over budget and many years late, making it a perfect target for nuclear naysayers. The U.S.'s nuclear future is focused on small modular reactors, or SMRS, finds E&E News.

Headshot of Cat Clifford

Cat Clifford

Senior Science and Economics Correspondent