[1] Macedonian Acad Sci & Arts, Res Ctr Energy & Sustainable Dev, Krste Misirkov 2, Skopje, Macedonia
[2] Univ Zagreb, Dept Energy Power Engn & Environm, Fac Mech Engn & Naval Architecture, Ivana Lucica 5, Zagreb 10002, Croatia
[3] Aalborg Univ, Dept Dev & Planning, AC Meyers Vaenge 15, DK-2450 Copenhagen SV, Denmark
[4] Univ Palermo, Dept Energy Informat Engn & Math Models, Viale Sci,Bldg 9, Palermo, Italy
[5] Forschungszentrum Julich, Inst Energy & Climate Res IEK STE, D-52425 Julich, Germany
[6] Aalborg Univ, Dept Dev & Planning, Skibbrogade 5, DK-9000 Aalborg, Denmark