Nuclear Power Plants
Nuclear power plants are very clean-burning and their efficiency is rather staggering. Nuclear power is generated at 80% efficiency, meaning that the energy produced by the fission reactions is almost equal to the energy put into producing the fission reactions in the first place. There is not a lot of waste material generated by nuclear fission although, due to the fact that there is no such thing as creating energy without also creating some measure of waste, there is some.
