Experimental buildings for the Solar Decathlon Europe 2010 in Madrid (E); University of Wuppertal. 

An all-electric building, made more energy self sufficient with photovoltaic systems on the roof (6 kWₚ) and the facade (3 kWₚ), together with a backup battery (7 kWh)

Experimental buildings for the Solar Decathlon Europe 2010 in Madrid (E); University of Wuppertal. An all-electric building, made more energy self sufficient with photovoltaic systems on the roof (6 kWₚ) and the facade (3 kWₚ), together with a backup battery (7 kWh)

Image credit: Peter Keil