[PeterisP]

Yes, even including Chernobyl and all the other accidents, nuclear power causes less deaths per GWh and less environmental damage than coal (which is the type of electricity used to fill in the gaps when e.g. Germany stopped it's nuclear plants). If you're worried about the habitable land, Hydro power is relatively "green", but each major hydro plant wrecks habitability and ecosystems in an area that's smaller than but comparable on scale with the Chernobyl exclusion zone.

Like, this is a reasonable question to ask, but it has been asked and analyzed a lot and the practical answer to it is overwhelmingly against fossil fuels, it's not even close. Coal causes far more cancer than radioactive disasters, but we simply aren't (yet?) holding them accountable for this damage.