You're making bad future assumptions about wind/solar. What is impressive to me is that wind/solar are now beating the best LCOE "old power" scheme (gas turbin

You're making bad future assumptions about wind/solar. What is impressive to me is that wind/solar are now beating the best LCOE "old power" scheme (gas turbine)... and they are not done dropping in cost. There are a variety of future economies of scale and advancements yet to come that will drop them even lower. When they drop low enough and batteries get cheap enough, then yes, effectively batteries are "free" because battery+alt energy is cheaper than any other dirty alternative. I would guess in 5-6 years we'll have a convergence of ultracheap wind+solar and good-enough sodium ion batteries that no existing nuke design or fossil fuel can beat.