This is the magic climate change solution. You're yada-yada'ing over the part that is going to be all but impossible.
We already have huge networks of Nuclear reactors.
France is 85% Nuclear.
The entire Western world could be within a decade.
Do you think we've retrograded and lost our ability to 'do stuff'?
Maybe politically, but not materially.
We know exactly what to do and there are no material barriers to fairly widespread Nuclear Adoption, it just takes a bit of political will.
It could be, but it's unlikely to be. People in Germany and Japan are quite opposed. In the US, it doesn't make economic sense. Not going to make it to 85% of the western world without those countries on board, even if you don't consider Japan to be in the west.
Regardless of the merits, people don't want these generators near them, and there's not a lot of site options that are close to transmission lines and other important needs, but not close to people.
Obviously there are questions as to how well, as a human race, we are organized ... but we can 100% do it, right now. We just have to get a long and act responsibly.