Nuclear energy expanded greatly in the 1970s and 1980s, but has been fading ever since as few new plants have been built and older plants are retired. As a non-carbon generating and 24/7 reliable electricity source new designs are proposed to solve many of the problems and objections to the older designs and retain this valuable electric power source. One popular solution are so-called Small Modular Reactors. This class shows how they work and how they are supposed to be better than older designs.