As investments in wind and solar power climb, backing major hydropower projects may be seen as a risky bet in a warming world, as studies show that reservoirs may be major sources of methane emissions and climate change itselfcould make rain and snowfall less certain in some regions.
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Large hydro projects will likely be built in the coming years, especially in Africa and Asia, while the U.S. is entering an era of dam decommissioning or refurbishment rather than construction of new hydroelectric dams, said David Michel, director of environmental security for the Stimson Center, a Washington, D.C.-based and partly UN- and U.S. government-funded think tank focusing on water management, climate change and national security.
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