The purpose of the ECRES is to bring together researchers, engineers and natural scientists from all over the world, interested in the advances of all branches of renewable energy systems. Wind, solar, hydrogen, hydro-, geothermal, solar concentrating, fuel-cell energy systems and all energy-related topics are welcome. All accepted papers will be published in a special Conference Proceeding. The conference proceedings will be delivered online from www.ewres.info just after the conference. In addition, high amount of good papers, which are going to be presented in the Conference will be published in Science Citation Index (SCI-indexed), SCOPUS-indexed and EBSCO-indexed journals.