furthermore the association of southeast asian nations asean has a vast potential for renewable energy sources res which is largely untapped with the exception of largescale hydropower while the region is expected to see a steady rise in hydropower and rapid expansion of other renewables the international energy agency iea still projects the share of fossil fuels in the total primary energy supply tpes to increase to by the target is to increase the share of renewables including largescale hydropower but not traditional uses of biomass in the tpes to by in emerging asia as a whole coal and gas are expected to prevail as the dominant source of energy towards however the projected growth in energy demand provides great opportunities for emerging asia to exploit its largely untapped potential of renewable energy sources although energy efficiency measures could help to slow the growth of fossil fuel consumption largescale investment in renewable energy development would still be needed to make a significant difference