1. Institute of Applied Economics, Faculty of Economics and Business, University of Debrecen, H-4032 Debrecen, Hungary
2. HUN-REN-DE High-Tech Technologies for Sustainable Management Research Group, University of Debrecen, Boszormenyi Street 138, H-4032 Debrecen, Hungary
3. Department of Statistics and Methodology, Faculty of Economics and Business, University of Debrecen, H-4032 Debrecen, Hungary
4. Department of Management and Organization, Corvinus University of Budapest, H-1093 Budapest, Hungary
5. Power-to-Gas Hungary Kft, H-5000 Szolnok, Hungary
6. Renewable Energy Research Group, University Center for Circular Economy, University of Pannonia Nagykanizsa, Zrínyi Miklós Street 18, H-8800 Nagykanizsa, Hungary
7. Environment and Biofuel Research Laboratory, Department of Hydro and Renewable Energy (HRED), Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India