The earth receives just over 1 billion watts of raw energy from the sun daily. Using that energy to boil steam to turn tubines caps that energy generation ability to 105,566,992 watts of power if we capture all the solar radiation that hits earth.
Humanity currently uses 17.5 terrawatts of power daily. How do you make up the 99% shortfall? Little hint, wind and hydroelectric isn’t enough to make up that gap. Nuclear is currently our only option outside of asteroid mining.