ABSTRACT
Energy supply is considered as one of the most important challenges of the future accompanied by many interrelated ecological and economic issues. The energy and transport sectors have been proved to be the main drivers of the greenhouse effect causing global climate changes (WHO, 2006). With the current level of energy consumption, world market energy consumption is projected to increase by 44 per cent from 2006 (497 EJ) to 2030 (715 EJ) (IEO, 2009).
