Yes. Unlike power plants that burn fuels like coal, oil or gas, hydropower plants do not emit climate-altering gases that contribute to the greenhouse effect. If we take into account the complete life cycle of a hydropower plant, the quantity of CO2 produced per kilowatt-hour of energy generated is between 35 and 70 times lower than the amount produced in energy production using fossil fuels and avoids the release of more than 500 grams of carbon dioxide into the atmosphere. According to the International Energy Agency (IEA), 4,333 terawatt-hours of hydroelectric energy were produced worldwide in 2019, saving more than 2 billion metric tons of CO2 a year – not to mention the benefit of reduced water consumption compared with fossil fuel-powered plants, which use enormous volumes of water for cooling purposes. The International Renewable Energy Agency (IRENA) estimates that the trend over the next few decades will be one of slow but persistent growth in installed capacity and generated power, with an overall increase of 50% in thirty years. Hydropower will therefore be able to reduce CO2 emissions by around one tenth of the quantity required to achieve the climate goal set out in the Paris Agreement: a key role that has also been recognized by the United Nations.