If the decline has caught your interest, here's the case for and against this SMR technology leader. NYSE : SMR Advanced nuclear company NuScale Power (SMR 3.84%) is developing small modular reactors (SMRs), which are manufactured in a factory and deployed in multiples. At its core, NuScale is trying to make nuclear power more practical. Rather than constructing gigawatt-sized nuclear power plants, which can take a decade or more to build, NuScale hopes to sell compact reactors on a shorter timeline, within ...