Earlier quoted context omitted.
I disagree with cheapest. If you factor in twenty years build time and nuclear waste disposal, the whole thing is not economically viable. Then there's a problem with nuclear fuel. The sources are mostly countries you don't want to depend on. You are of course right with your assessment that nuclear is green, safe and eco-friendly. That's a hard one to swallow for a lot of eco activists.
From a technical point of view, nuclear waste is a solved problem. The issue is political. Ibidem for the fuel: yes, you can depends on wild countries; You can also depends on Australia, Canada and India, which seems like not-so-bad countries (in my opinion);
When it comes to nuclear waste repositories real experts official publish: "Internationally, it is understood that there is no reliable scientific basis for predicting the process or likelihood of inadvertent human intrusion."
Source: https://international.andra.fr/sites/international/files/201...