The solar panels can go on the buildings. They need shingles and siding, get double duty out of those wear items. Nobody is complaining about building waste yet.

Also the ocean doesn't look black, but solar panels do.

There is one part of the idea that's interesting. If the solar farm is several time zones west it will totally squash the duck curve.

The area of solar panels needed to power the world is probably not enough to affect the climate. But the manufacturing of them might.