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Clean Energy

Learn more about energy from solar, wind, water, geothermal, biomass and nuclear.

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Learn more about our fossil energy sources: coal, oil and natural gas.

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Electric Power

Learn more about how we use electricity as an energy source.

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Energy Storage
The Energy Department is developing new technologies that will store renewable energy for use when the wind isn't blowing and the sun isn't shining.
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Hydrogen & Fuel Cells
Learn about hydrogen and fuel cell technology.
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Primary energy sources take many forms, including nuclear energy, fossil energy -- like oil, coal and natural gas -- and renewable sources like wind, solar, geothermal and hydropower. These primary sources are converted to electricity, a secondary energy source, which flows through power lines and other transmission infrastructure to your home and business.

Learn more about America’s energy sources: fossil, nuclear, renewables and electricity.

How Much Do You Spend on Energy?

Check out our interactive to calculate how much money you're spending on energy every year.