According to the International Energy Agency (IEA), wind power capacity reached 65 GW in 2020, an increase of 8% with respect to 2019, despite the problems caused by Covid-19. Further growth is expected for 2021, with capacity due to reach 68 GW, while total capacity might be as high as 100 GW by 2025. According to the International Renewable Energy Agency (IRENA), by 2050 more than a third of the world's energy (35%) could be generated by wind, thanks to improvements in turbine technology which will make the cost of wind power increasingly more competitive.