Home energy ratings seem reliable, but are they? We look at the results from one experiment that tries to answer this question for the existing homes market.

As the ratings industry in the United States shifts from a subsidized market to an unsubsidized one, we look at four areas of opportunity for home energy raters. Will these opportunities be growing or collapsing in the 21st century?

A comprehensive technical and social refurbishment of a housing estate built in the seventies is carried out in the Gardsten project. Well thought out traditional measures are combined with newenergy technology which was initiated through participation in an EU project which, in turn, is based on IEA collaboration.