Drzach & Suchy have designed the most perfect decorative fusion between art and solar energy collection. Solar modules are attached to a South-facing building facade at their side edge so that they cast a shadow below. They are arranged as the pixels of an image. During the day as the sun moves across the sky, the shadow created by the many piksols completes the image. They can be arranged at 45 degree angles so that one image shows during the morning and another in the afternoon. In between they form a sort of abstracted combination of the two. Though they do not suggest it, the piksols could be lit at night with building lights from below to create an interesting variation. The video is a really great illustration.