[en] The present interim report is the result of the debates within a working group set up for the preparation of the application of the supporting measures planned in Switzerland by the authorities in order to promote energy conservation and renewable-energy use. The goals and principles to be applied are first presented. The aim of the supporting strategy is to reduce environmental pollution and its follow-up costs; valuable impetus shall be also given to innovation and commercialisation of new products, in order to get a sustainable energy effect along with a contribution to economic development. The system to be built up shall be flexible and evolve according to continuous experience and to market needs. The authors describe for the 5 sectors considered (autonomous energy production units, buildings, electrical appliances, transportation, industry) the supporting models they suggest. They consider then the structures to be built up in order to fulfil the principle of the powers' separation: strategic decisions shall be made by a committee advising the Swiss Federal Office of Energy, whereas the cantons (=regional governments) and the agencies set up by the private industry shall be in charge of the execution of the measures