Mini Nuclear Reactors
Toshiba is trying to donate a small nuclear reactor to a Alaska town powered by diesel generators.
DOE lists capacity as 10 to 50 MWe.
They have a smaller one that is a 200KW model.
Apparently the neutron reflector design is how they get a sub-critical mass to produce energy. Hence their ability to scale DOWN the size and power production of a nuclear power plant. See Wikipedia entry.