The new competition organized by Viessmann, a company of international reference in the production of heating systems, sets out to promote efficiency in design, seen as integration between architectural solutions and physical plant choices to achieve sustainability, with a focus on innovative solutions in terms of devices and physical plant layout. The competition seeks projects whose technological contents are capable of guaranteeing high performance while reducing the use of fossil fuels and keeping emissions to a minimum. The solutions can use renewable energy sources and must respond to criteria of sustainability and feasibility. The projects will be evaluated on the basis of overall design quality and innovative content.  www.viessmann.it.