The Evalon Solar PV-cell by Alwitra are placed on a flexible backing. They contain no glass and they produce only one third of the reflection of glass. The Evalon Solar PV-cells are very light in weight and can be glued onto a roof just like ordinary roof coverings. Due to it’s technical properties, the Evalon Solar PV-cells can be used as a roof covering in itself. The PV-cells produce up to 20% more electricity than comparable PV-cell based on cristals.