There is a perception that a building can either have green roofs or solar production at roof level but not both. However, it is possible to take a more pluralistic approach and use both technologies in tandem. In fact there is substantial evidence from Germany that the use of both solar/photovoltaic and green roofs provides dual benefits in terms of energy production and energy saved.
Solar/Photovoltaic A-Frame panels at roof level are known to work more efficiently when installed on a green roof rather than a on a conventional surface.
The green roof element not only saves energy during the summer time (see Thermal Performance) but can increase efficiency of PV by reducing fluctuation of temperatures at roof level and by maintaining a more efficient microclimate around the PV Panels.
The performance of photovoltaic panels is lowered by 0.5%/oC above or below 25oc. The green roof is able to maintain the ambient temperature of 25oC.



Green Roofs & Solar Power

