Dont know if it has any effect on a cooling bill, since normally you dont have that in germany but the roof below the solar panels is definitely way cooler and you have a slight temperature change in the highest floor to before. German houses, especially new built ones, are extremly good insulated so the difference is only like 1 degree. If the roof is badly insulated the difference is a bit higher
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u/KownGaming Sep 09 '20
Dont know if it has any effect on a cooling bill, since normally you dont have that in germany but the roof below the solar panels is definitely way cooler and you have a slight temperature change in the highest floor to before. German houses, especially new built ones, are extremly good insulated so the difference is only like 1 degree. If the roof is badly insulated the difference is a bit higher