Aerial view of the roofs of the solar village, Vauban-Viertel quarter, Freiburg, Baden-Wuerttemberg, Germany, Europe

above aerial aerial alternative alternative angle apartment architecture authorities authority baden baden wuerttemberg birds birds eye building buildings cell cells clean collector collectors condo condominium condominiums condos conscious conservation day daylight daytime during eco eco friendly ecofriendly electricity elevated energies energy engineering environment environmental environmentalism environmentally estate estates europe european exterior exteriors eye federal freiburg frg friendly from generation german germany green heater heaters high high angle house houses housing lot lots many module modules nobody numerous of outdoor panel panels perspective perspectives photo photograph photographs photos photovoltaic photovoltaics power preservation protecting protection provider providers quarter renewable republic residential roof roofs several shot shots solar source sources supplier suppliers supply system technic technical technology the top topview topviews vauban vauban viertel viertel view views village wuerttemberg