> use 'renewables' to sequester CO2 from the atmosphere and convert it into something like butanol, for example.

are you referring to P2X? I think P2X is an awesome solution for existing infrastructure, but it's obviously not particularly efficient. I am excited about pumped storage as well, but my fear there is we'll run out of sites, and obviously the 80% efficiency is still not ideal.

By no means am I arguing nuclear is a one size fits all solution.