Renewable energy statistics 2021 By Bhoomika Singh/ Updated On Mon, Aug 9th, 2021 Renewable Energy Statistics 2021 by IRENA provides data sets on the power-generation capacity for 2011-2020, actual power generation for 2011-2019, and renewable energy balances for over 130 countries and areas for 2018-2019. Data were obtained from a variety of sources, including an IRENA questionnaire, official national statistics, industry association reports, consultant reports, and news articles. Major trends in the sector worldwide are outlined in the accompanying brief on Renewable energy highlights. The yearbook also includes statistics on investments in renewables, compiled from the OECD-DAC database and 20 major multi-lateral, bilateral, and national development financial institutions, spanning 2010-2019. The investment data is presented in millions of United States dollars (USD million) at 2019 prices.