You are just a lay-man to comment on the technological aspect of the nuclear power plants. Please do not give over-emphasis on nuclear power projects.
First, nuclear power, does'nt come that cheap as you think. Secondly, disposing of the residue itself if a more cumbersome task than making a power plant. Better you ask them knowledgable engineers on this issue before commenting. If hydel power plants are threat to environment, nuclear power plants are even more dangerous to man-kind. Yes, of course, on short-term basis, nuclear power plant is an option to tide over the present crises. Go in for nuclear power, if we do not care too much for the future generations.