At Offsite2007, Kingspan Off-site unveiled the first zero-emission home in the UK. Boasting a wind-catcher to cool the house during the summer and burning wood pellets in the winter, it also generates its own electricity and hot water via solar power, providing a savings of about £500 per year. While construction costs are about 40% higher than they would be with a conventional house, the price is apt to drop as more are built. ...