I’ve been intrigued by ZEDfactory ever since I first started seeing their homes and designs. The three letters "ZED", which stand for Zero Energy Development, seem to show up in all ZEDfactory designs. But I must admit: their designs have a certain whimsical, if not playful, look. That’s no big deal, though, because future solutions are going to look different. Certainly, ZEDfactory is serious when it comes to pushing the envelope towards sustainable housing options. The above and below RuralZED was on display earlier this year at EcoBuild in Earls Court, London. To be clear, RuralZED is more than a house, it’s a system for developing zero carbon, zero energy, healthy homes.