NuScale Power is developing modular nuclear reactors, but it has yet to build one. There are lower-risk ways to invest in nuclear power. NuScale Power (SMR 5.36%) is an interesting company if you think nuclear power is going to be a key form of clean energy in the future. There's just one "minor" problem: The company doesn't have a functioning product yet. If you like the idea of nuclear power, but prefer to own companies that are more developed, then you might want to consider Cameco (CCJ -1.25%) or The So ...