Art meets solar: These Dutch startups are making photovoltaics sexy

One of the best ways to make buildings greener is to cover them with solar panels — turning homes, offices, and factories into clean energy generators.  Rooftop solar is particularly popular in the Netherlands because, well, it’s a tiny country with lots of people, where every square inch counts. Adding solar panels to the empty exterior of a building, rather than occupying swathes of countryside, simply makes sense.   Rooftop makes up the largest number of solar inst