At PHYSEE they believe in sustainable innovation without compromise. From that believe the're developing PowerWindows. PowerWindows are patented and transparent double-paned windows that convert light into electricity. Conventional glass reflects about 30% of the incoming light, we instead collect that with our coating on the outside windowpane, transport it through the glass and convert it at our solar cell strips inside the window frame. Combined with a thermal storage system, PowerWindows can save up to 50% of the total energy demand (electricity and heating) when renovating conventional commercial buildings, and up to 100% of new constructed commercial buildings.