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A house in the energy-saving residential area of Flerden in the canton of Grisons, Switzerland, pictured on October 1, 2009. The municipality of Flerden provides inexpensive plots for houses which are built according to the so-called Minergie energy efficiency standard. (KEYSTONE/Gaetan Bally) Ein Haus in der Energiespar-Wohnzone in Flerden im Kanton Graubuenden, aufgenommen am 1. Oktober 2009. Die Gemeinde Flerden stellt fuer Haeuser, die dem Minergie-Standard entsprechen, guenstiges Land zur Verfuegung. (KEYSTONE/Gaetan Bally)