Photovoltaic panels, solar cells, energy, roof, office building, Ingolstadt, Bavaria, Germany, Europe

alternative alternative architecture bavaria bavarian blue building buildings cell cells clean collector collectors conscious day daylight daytime during eco eco friendly ecofriendly electricity energies energy engineering environment environmentally europe european exterior exteriors federal frg friendly generation german germany green heater heaters ingolstadt modern module modules nobody of office outdoor panel panels photo photos photovoltaic photovoltaic photovoltaics power renewable republic roof roofs shot shots sky solar source sources southern supply system technic technical technology the view views