Zero-carbon house
Living off the grid: Zero-carbon house
The Reas fell in love with Unst in the Shetland Islands at first sight. Extremely economically, they have built an inspiring zero-carbon house in their dream setting and created an almost completely carbon-neutral lifestyle around it without sacrificing any of their creature comforts
http://www.guardian.co.uk/environment/video/2008/may/19/reas.zero.carbon.house