The fossil energetic sources (oil, gas, coal) are destined to get exhausted themselves: in the turn of 20, 50 or 100 years according to the exploitation that will be made, which has drastically increased during the last few years as a result of the economic development of emergent countries (such as China and India) and as the result of the lack of strong environmental politics from the western countries (USA and Europe). The greater part of the climatologists is convinced that the emissions of CO2 are the main cause of the world climate changing that we are experiencing, and that manifests itself with an increase of catastrophic events such as violent precipitations and drought, the dissolution of glaciers and the being left over of the desert zones. With the ratification of the Kyoto Protocol, all the states of the Alpine arc have engaged themselves in the reduction of the harmful emissions.
Now, time has come to put in existence concrete measures in order to diminish the emissions, beginning from the private rooms. The greater percentage of the fossil fuel consumption in the houses comes from the heating (approximately 70%), which is understandable considering the typical climate of the Alpine zones. In the reduction of the energetic requirements through techniques of energetically efficient construction and reorganization, it is hidden therefore the best solution for emissions saving: ecoefficiency could be applied both on the new constructions and on the existing buildings. With the adoption of solar technologies (photovoltaic and solar thermal) and modern techniques of coibentazione, the energetic requirement for the heating can be reduced until 80-90%. Today it is possible to think about the energetic saving as a great opportunity of cultural innovation, of valorisation of the natural resources (beginning from the wood). The Alps represent undoubtedly the perfect place where we can experience and make successful the technologies of the ecoefficiency.
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