This makes my brain so happy!!!!!
André Broessel is the European architect and engineer behind this weatherproof energy harvesting system that turns light into heat. It is in many regards more robust, efficient and versatile than traditional photovalics, concentrating available light sources and multiplying their thermal effect (click to enlarge the diagram below for a better understanding of the basic system).
Made to be mounted on buildings individually or in arrays, a computerized control system passively tracks available illumination in the day, but can also follow and be fueled by moonlight.
The balls can work both to generate power and as replacements to traditional window apertures, creating a wide variety of potential hybrid architectural applications as well.
Here is a link to a lovely little Vimeo vid on the subject as well;
Article by Urbanist, filed under Gadgets & Geekery in the Technology category.