Flexible Solar Panels

PowerFLEX is made from thin-film photovoltaic Copper Indium Gallium DiSelenide (CIGS) solar cells. This CIGS solar material is the key to producing highly efficient solar panels that are lightweight and flexible. It is this quality that allows the material to be installed with significantly less hassle than standard polycrystalline silicon panels that require racks. The PowerFLEX material can be quickly and easily rolled onto any flat roof, covering it entirely if required without needed the additional space racks can take up. The lightness also helps to allow them to be installed without the same compilations that can occur with the polycrystalline silicon panels.

(Source: http://www.best-solar-energy.com/solar-thin-film/flexible-solar-panels-with-extreme-performance-and-low-cost/)