1 world energy investment outlook global strategic challenges dr fatih birol chief economist head economic analysis division international agency u s d o e sp ec ia l a wa rd fo r na ly tic al ex ce lle nc ab n m ro aw ar of cel le w or ld c oal in st itu te primary demand gas grows fastest absolute terms & non hydro renewables but oil remains the dominant fuel 2030 0 000 2 3 4 5 6 1970 1980 1990 2000 2010 2020 mt natural coal nuclear power z security supplies
