A collateral calculation.
The solar energy flux is 1.37 kW/m**2.
A typical nuke produces 1000 MW of energy or 1.0 x 10**9 watts
So a nuclear power plant generates the same power as sunlight falling on 7.3 x 10**5 sq meters of ground (under optimum conditions). That's a square 854 meters on a side, less than 3/4 of a square kilometer.
Ignoring latitude, efficiency, time-of-day and exposure considerations, a thousand 1000 MW nukes could be theoretically replaced by one solar collector of 730 square kilometers; the land area of Lexington, Kentucky.
All the power produced by man: nukes, fossil, hydro, everything, is insignificant to what the earth gets from the sun every moment. It just doesn't matter.