renewable energy markets past and future trends rick sellers head unit international agency 9 rue de la federation 75739 paris cedex 15 france today sources account for some 13 5 of total global supply against the backdrop rapidly rising consumption prices several scenarios have suggested that could meet over 20 demand in 2030 significantly more 2050 projected growth is based on a competitive environment all within those projections three factors affect renewables cost market intensity availability natural resource maturity each technology rules set by governments to encourage larger share are investing research development demonstration rd&d establishing range policies support deployment these investments underpinning shift from first generation technologies second newer strong growing but just few countries challenge broaden base assure continued rapid key achieving