Preview Solar panels attached to a cliff above the Refuge Bertone, which provied electricity to this off grid mountain hut. Image ID: 911-10131 Artist: Ashley Cooper Purchase a commercial license Buy framed prints & more from our print store tour du mont blanc italy alps italian alps mountain mountain range hut shelter building architecture renewable renewable energy solar solar power solar panel pv photo voltaic off grid electricity power roof refuge bertone rock wall vertical south facing south sunlight