Nuclear energy is experiencing a political and technical renaissance. Around the world, nuclear fission is gaining traction as a critical piece of the puzzle for maintaining energy security while also slashing greenhouse gas emissions. Much of the renewed excitement over nuclear power comes from advances in nuclear technologies, particularly small modular reactors (SMRs), which are supposed to make nuclear capacity expansion cheaper, safer, and more efficient. SMR is still a broad term, encompassing models with capacities ranging from 1 megawatt…