According to the BBC the first zero emission home has been unveiled. This two bedroom house (see above) is insulated to lose 60% less heat than a normal home. It also features solar panels, a biomass boiler and water efficiency devices such as rainwater harvesting.
According to the report "The home generates all its own energy - and when you're away on holiday can send electricity back to the National Grid. The company says its annual energy bill would be £31, as compared to £500 for the standard new home of this size."
This is all great news but I guess the important thing is how quickly this sort of design and technology get incorporated into all new homes.