How is nuclear power better than hydro electric power cost wise?

Answer 1

Hydro power depends on suitable water sources and terrain where you can build a dam to obtain the necessary head of water, so it can't be built anywhere, whereas a nuclear plant can be sited in most areas apart from earthquake zones, provided there is a supply of cooling water. So hydro is more limited in application, but I guess if there are the right conditions for building it, this will be the most economical in the long run, and there are no pollution worries. Nuclear plants should be compared with fossil fuel plants rather than hydro, as the choice is then more valid.