There’s been a sea change in the nuclear energy industry. On Thursday, U.S. Energy Secretary Chris Wright greeted private developers at Idaho National Laboratory. He looked at the resident developers’ small modular reactors, or SMRs, then joined INL’s staff for a celebration of “The Golden Era of Nuclear Power” in Idaho Falls’ Mountain America event center.The next generation of advanced reactors is a diverse bunch: some are large, some are small, some look like they could be part of a “Star Trek” episode, and others are reminiscent of large crab-boil pots. Despite differences in structure and capacity, their designers and...