Heating and air conditioning consumption and energy loss through the roof's structural slab can be greatly reduced by installing greenroofs. The amount of energy savings depends on the depth of the soil, the insulating properties of the growing media itself, and the roof surface area that is vegetated. But in general, most residential structures could expect to save around 8-10% off of their energy bills and commercial buildings typically would save between 4-6% off of their energy bills.
