BLOG: Study: Reservoirs A ‘Significant’ Contributor To Climate Change

Hydropower dams are generally thought to be a clean source of electricity. By moving water through turbines, dams can generate large amounts of electricity almost continuously and without causing air pollution. It’s partly for these reasons that more than 3,700 hydroelectric dams are currently proposed or under construction worldwide. But a growing body of science reveals a dark side. It turns out the reservoirs formed by dams are a significant source of greenhouse gases – particularly methane, about 34 times more potent than carbon dioxide. In the last 10 years, dozens of studies have shed light on this problem.