When one thinks about solar energy, the first image that comes to mind may be a Californian field of photovoltaic panels. But cloudy Germany, not sunny California, has the advantage when it comes to solar electricity, with a capacity of 38 gigawatts compared to a mere 11 in the Golden State as of 2015. As governments worldwide set ambitious targets to prevent global warming, investing in new energy policies and climate strategies, none has gone…