Hydropower’s role in achieving a clean energy transition and in supporting the faster expansion of solar and wind generation capacity, is undervalued, the International Energy Agency’s (IEA’s) inaugural ‘Hydropower Special Market’ report states. Hydropower has a key role in the transition to clean energy not only through the massive quantities of low-carbon electricity it produces, but also because of its unmatched capabilities for providing flexibility and storage. Many hydropower plants can ramp their electricity generation up and down very rapidly compared with other power plants such as nuclear, coal and natural gas, the IEA says.