Test your energy knowledge by checking out these surprising facts about hydropower.
Often described as “giant batteries,” pumped storage hydropower (PSH) plants account for the bulk of utility-scale electrical energy storage in the United States and worldwide.
Hydropower is the largest source of renewable energy in the United States, and it continues to advance with new developments, including "powering" dams that currently do not generate electricity.
Find out how the Energy Department is helping to improve hydropower technologies.
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