Energy at Work: Hydroelectric Power

Introduces the history, uses, production, advantages and disadvantages, and future of hydroelectric energy as a power resource.

People have known how to capture the power of rushing water for thousands of years. Today, people around the world use more hydroelectric power than any other renewable energy source. Hydroelectric power is most commonly associated with dams, but only 3 percent of its energy comes from this source. Learn about the benefits and drawbacks of this power source.