The largest solar plant is at about 2000 MW and requires a lot of land. https://en.wikipedia.org/wiki/Bhadla_Solar_Park
The largest wind farm is not being used as efficiently as it could: https://en.wikipedia.org/wiki/Gansu_Wind_Farm
Of course you'd want to rely on wind power more than just going all in for solar in Germany. It's not a particularly sunny country.
In hindsight, Chernobyl might have done more harm to the planet than we thought - it single handedly turned public opinion against nuclear power, and all the clean energy it provides.
One wonders if we would have any of our current climate issues if we had adopted nuclear power en masse in the 80s and 90s.
In a decade renewables will be so far ahead that it would be plain stupid to push nuclear. This is why it's not happening outside a lobby group from the industry who try to push shady people like Michael Shellenberger.
Maybe if we had adopted nuclear en masse in the 80s we could have avoided current climate issues, but we didn't. I don't see why anybody thinks there's any point subsidizing this industry to hell and back now given the cost and the cheaper, less capital intensive options available that don't need subsidies.