That is something which pisses me off about old white fuckbags like Sanders, for all the good his socialist-flavor ideas could do, the stupid old cunt is anti-nuclear. If you are anti-co2 for some reason (read: anti-poor people improving their standard of living) then you are either pro-nuclear or a monster.
Aren't those estimates sort of bullshit however? I recall a lot of those pro-nuclear things completely omit the costs to
build the plants, or to decommission the plants, or store the waste, and only look at daily operating costs / outputs.
https://www.ucsusa.org/nuclear-power/cost-nuclear-powerNuclear is super-expensive if you factor in all costs. Also, there really aren't enough reserves to dig up to expand nuclear. It's estimated total cost-effective sources total 230 years of fuel at current rates. 2/3rds of that are not-yet-discovered but predicted sources. So there are about 80 years of known, viable sources of uranium. But that's at current rates which total 5% of worldwide energy needs. Scale that up merely by 4x to account for 20% of energy needs, and the known proven uranium reserves run out in 20 years, much too fast to even locate the remaining sources or develop tech to extract more uranium cheaply. Add to that that solar is only going to get cheaper and cheaper every year. Plus, the plants would take decades to come online, and the building process will create tons of CO2 in the meantime. It's a losing proposition.
Sure, we can say "but thorium" to get around the uranium issue. Except, then we're banking on a sci-fi answer of coming up with currently non-existent tech.