Solar panels on the roof of a house, farm, Gasthof Benz-Muehle inn, Ottenhoefen, Muehlenrundweg, Black Forest, Baden-Wuerttemberg, Germany, Europe

alternative alternative architecture baden baden wuerttemberg benz benz muehle black building buildings cell cells clean collector collectors conscious conservation day daylight daytime during eco eco friendly ecofriendly electric electrical electricity energies energy engineering environment environmental environmentalism environmentally europe european exterior exteriors farm farms farmstead farmsteads federal forest frg friendly gasthof generation german germany green heater heaters hochschwarzwald house houses inn modern module modules muehle muehlenrundweg nobody of on ottenhoefen outdoor panel panels photo photos photovoltaic photovoltaics power preservation protecting protection provision renewable republic roof roofs shot shots solar solar source sources supplies supply system technic technical technology the view views wuerttemberg