The German minister for buildings has awarded the winners of the competition for energy efficient retrofit of large housing developments on 15 July 2009. 34 settlements have received prices for their concepts that combine an increase of energy efficiency and demographical, economical and social aspects. The winers received awards of 100,000 € (gold), 75,000 € (silver) and 50,000 € (bronze). Gold winners are settlements in Berlin, Dresden, Nürnberg and Wernigerode.
More than 5 mio. inhabitants live in housing developments (settlements with more than 1000 dwelling units) in Germany. This means that 7.5 percent of all dwelling units are located in this type of settlement. The main task for the housing societies and other kind of owners was to save energy and heating costs and at the same time to improve the living quality in the often neglected large housing developments.