Hydroelectric dams can be responsible for significant greenhouse gas emissions.

Question

Quizplus · Accepted Answer

Although hydroelectric dams are often considered a clean energy source, they can contribute to greenhouse gas emissions in a few ways. When a reservoir is created behind a dam, the vegetation in the area is often submerged, and as it decomposes, it releases methane, a potent greenhouse gas. Additionally, the turbines used to generate electricity can release carbon dioxide and other greenhouse gases during their manufacturing and maintenance. Finally, the construction of a large dam can require significant amounts of energy and produce emissions during the building process.

Hydroelectric Dams Can Be Responsible for Significant Greenhouse Gas Emissions