University of Osijek, Faculty of Food Technology Osijek Regional development agency Srem Polish Foundation for Energy Efficiency (FEWE) B.A.U.M. e.V. – Bundesdeutscher Arbeitskreis für Umweltbewusstes Management e.V. KÖVET Association for Sustainable Economies Federesco International Network for Environmental Management e.V. (INEM) Czech Technical University in Prague, Faculty of Electrical Engineering, Department of Economics, Institute for Climate Protection, Energy and Mobility (IKEM) Climate Action Network Europe