In 2018, 28% of global electricity was generated from renewable energy sources, most (96%) of which was produced from hydropower, wind, and solar technologies. In its International Energy Outlook 2019 (IEO2019), the U.S. Energy Information Administration (EIA) projects that renewables will collectively increase to 49% of global electricity generation by 2050. Of the top three renewable sources, EIA expects solar’s share of generation to grow the fastest and hydroelectric’s share to grow the slowest.
