Has this actually been quantified? Earth's albedo is a critical factor in the portion of the sun's energy that is rejected into space, just as GHG incidence in the atmosphere is.

In theory, darkening a portion of the Earth with high albedo (snow, sand) is worse than darkening a portion of the Earth with low albedo (roads, roofs, forest). Then it should be better to use a greener area for solar panels so long as the capacity factors would be similar.