Modern panels are about 22-24% efficient. Asphalt is about 0.1 albedo. So if you displace or export electricity. At least 12%.
I can't for the life of me find the albedo of solar panels of various types (people just assume it's zero which is patently untrue because it's much more visible than black paint at 0.05). A completely made up guess would be around 0.05-0.2 (they look lighter than asphalt except for topcon) so my guess would be 17-34% better (or ballpark same as greenery).
I can't for the life of me find the albedo of solar panels of various types (people just assume it's zero which is patently untrue because it's much more visible than black paint at 0.05). A completely made up guess would be around 0.05-0.2 (they look lighter than asphalt except for topcon) so my guess would be 17-34% better (or ballpark same as greenery).