Hydro dams actually incur significant greenhouse gas emissions especially during the initial fill where all the material that's now submerged rots and produces

Hydro dams actually incur significant greenhouse gas emissions especially during the initial fill where all the material that's now submerged rots and produces methane. https://www.theguardian.com/sustainable-business/2016/nov/06/hydropower-hydroelectricity-methane-clean-climate-change-study https://www.theguardian.com/sustainable-business/2016/nov/06...