Prototype of a facade that uses daylight and artificial light in an optimized way to offer ergonomically improved workspaces. Photovoltaic elements situated in between the glass panels supply the facade with energy. This prototype is the result of a collaboration between Behnisch and Transsolar Energietechnik, Sunways, Lichtlabor Bartenbach, Okalux and LTG. The prototype was showcased at the 2010 Light + Building Fair.