Unfortunately not to the extent to which you are maximising the efficiency of your solar panel system. Just like your car windscreen needs wipers, your solar panels need help too, to clean off general pollution, traffic dust, dirt, salt residue, bird droppings, mould or the like which has been baked on by the sun.
Simply, if vertical windows accumulate
Shari S. —
I don't think there us much I can add to the existing reviews other than to duplicate what they say. It's so nice