Growth of Renewable Energy (IMAGE) Terry Collins Assoc Caption Global investments in renewable energy of $2.7 trillion from 2007 to 2017 (11 years inclusive) have increased the proportion of world electricity generated by wind, solar, biomass and waste-to-energy, geothermal, marine and small hydro from 5.2 per cent to 12.1 per cent. Credit UN Environment/Frankfurt School/BNEF Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.