A group of Eco techies in the Netherlands (enviu) invented a dance floor that caputres your bouncing and fancy stepping kinetic energy and translates that energy to run the Disco heating/ cooling system, lights and music. Cost $100 to $200 per square meter. Thats not bad. We should put these in all concert venues. You could get a discount after the show for dancing, Heck you could get paid after seeing Trey.
