If you’re going to buy a satellite dish, why not get one that can heat water and cool your home? That’s the thinking behind evice, which consists of a honeycomb-like layer of hexagonal mirrors placed on top of a satellite dish. The system comes outfitted with a PVC tube, receiver, and evacuated tube–so it can both receive TV signals and concentrate sunlight onto an optical collector to heat water.
The $300 dish generates more energy than a standard water heater.