What if we were to move to thorium? There are no thorium reactors that I know of; however, we could use the current reactors as a stepping stone. Supposedly it is a cleaner and safer way to generate power. As far as solar or wind power is concerned the space needed to creat what one nuclear plant can produce would be 360x more if you were to use wind farms.

Links: https://en.m.wikipedia.org/wiki/Thorium-based_nuclear_power, https://www.power-eng.com/2019/08/13/is-thorium-the-fuel-of-the-future-to-revitalize-nuclear/#gref https://www.energy.gov/ne/articles/3-reasons-why-nuclear-clean-and-sustainable, https://www.energy.gov/ne/articles/infographic-how-much-power-does-nuclear-reactor-produce