The US generated an additional 64Twh of solar in 2024 compared to 2023. To get the same amount from nuclear you would need to build 5 large reactors in one year.
As for land mass, we can re-use already spent land mass, like rooftops, parking lots, grazing farmland and such. Solar can also be placed on lakes.
So for the foreseeable future there is no actual need for new land to be dedicated to solar.