The project has as main objective the investigation of the possibilities offered by Renewable Energy Sources, mainly solar, wind and biomass, as well as biogas as a by-product of wastewater treatment, for energy supply in isolated areas. To achieve its goals the Consortium will investigate the application of low-cost innovative RES technologies and will develop innovative decision support and operational tools for a wide implementation of RES in isolated regions for energy supply and wastewater treatment. These tools will be applied to the design of selected study cases from four Western Balkan countries, namely Serbia & Montenegro, Croatia, FYROM and Bosnia-Herzegovina. The selected study cases comprise remote regions, non-connected to the electrical grid, that have been particularly affected by the war and also physical islands. The results of these applications will be projected to alarge scale implementation of RES on a wider scale of isolated regions in these countries.The long-term objectives of the proposal are to contribute to sustainable development of the region, especially in the making good of the consequences of the war in the environment and health. The Consortium comprises Utilities, Manufacturers and Research Organizations from Western Balkan Countries and Research Organizations from CC and EU Countries with particular know-how in large- scale renewable penetration in isolated regions. The project will also significantly contribute to the increase and re-establishment of the collaboration among industry and research /academic institutions of the WB countries and such have positive effect on the overall future development of the region.