A study of nearly 500 global hydropower reservoirs using the G-res Tool published in Water Security and Climate Change: Hydropower Reservoir Greenhouse Gas Emissions (2021) found the median value for hydropower to be 23 gCO2-eq/kWh, which aligns with the Intergovernmental Panel on Climate Change (IPCC) estimate of 24 gCO2-eq/kWh.<p>Admits that wind power is actually less CO2 equivalent intensive than hydropower [1]<p>[1] <a href="https://www.hydropower.org/blog/carbon-emissions-from-hydropower-reservoirs-facts-and-myths" rel="nofollow">https://www.hydropower.org/blog/carbon-emissions-from-hydrop...</a>
The number of lakes on our planet has increased substantially in recent decades, according to a unique global survey of 3.4 million lakes. There has been a particular increase in the number of small lakes, which unfortunately, emit large amounts of greenhouse gas. The development is of great importance for Earth's carbon account, global ecosystems, and human access to water resources.