Construction of a large photovoltaic system on several rooftops, 16000 square metres, Gelsenkirchen, North Rhine-Westphalia, Germany, Europe

16000 above aerial alternative alternative angle assemble assembles assembling being beings birds birds eye build building business carries carry carrying clean conscious conservation construct constructing construction construction day daylight daytime during eco eco friendly ecofriendly economy electricity elevated energies energy engineering environment environmental environmentalism environmentally europe european exterior exteriors eye federal flat flat roof flat roofed flat roofs flatroof flatroofs frg friendly from gelsenkirchen generation german germany green high high angle human humans industry install installation installations installing installs labor laborer laborers laboring labors labour labourer labourers labouring labours large lot lots male man many men metres modern module modules north numerous of on outdoor panel panels people person persons perspective perspectives photo photos photovoltaic photovoltaics power preservation protecting protection renewable republic rhine rhine westphalia roof roofed roofs rooftops several shot shots solar source sources square supply system technic technical technology the to top topview topviews view views westphalia woman work worker workers working works