GAUSS Institute – Foundation for New Technolgies, Innovations, and Knowledge Transfer Slovak Association of Photovoltaic Industry and RES (SAPI) Chapter 4 Austrian Energy Agency Centre for Energy Research (EK) WWF Romania Grüne Heizkraft für Bitola University of Western Macedonia – Special Account for Research Funds Green Synergy Cluster International Center for Sustainable Development of Energy Water and Environment Systems – Macedonian Section (SDEWES-Skopje)