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Solar

How much do you know about solar power? Take our quiz and test your solar energy IQ. | Photo courtesy of NREL.

How much do you know about solar power? Take our quiz and test your solar energy IQ. | Photo courtesy of NREL.

The tremendous growth in the U.S. solar industry is helping to pave the way to a cleaner, more sustainable energy future. Over the past few years, the cost of a solar energy system has dropped significantly -- helping to give more American families and business access to affordable, clean energy.

Through a portfolio of R&D efforts, including the SunShot Initiative, the Energy Department remains committed to leveraging America’s abundant solar energy resources -- driving research, manufacturing and market solutions to support widespread expansion of the nation’s solar market.

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Top 10 Things You Didn't Know about Hydropower

Test your energy knowledge by checking out these surprising facts about hydropower.

Energy Department Releases New Energy 101 Video on Ocean Power

New video explains how we can use ocean power to generate electricity.

Boosting America’s Hydropower Output
The Boulder Canyon Hydroelectric Facility's new, highly-efficient turbine. | Photo courtesy of the city of Boulder, Colorado.

Learn about the Energy Department's effort to help optimize the performance of hydropower facilities across the U.S.