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Energy Sources

Primary energy sources take many forms, including nuclear energy, fossil energy -- like oil, coal and natural gas -- and renewable sources like wind, solar 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.

Featured

Top 6 Things You Didn't Know About Solar Energy
Installing a concentrating solar power system in Gila Bend, Arizona. The curved  mirrors are tilted toward the sun, focusing sunlight on tubes that run the length of the mirrors. The reflected sunlight heats a fluid flowing through the tubes. The hot fluid then is used to boil water in a conventional steam-turbine generator to produce electricity. | Photo by Dennis Schroeder.

Counting down our list of top things you didn't know about solar energy -- read on for more on the most abundant energy resource known to mankind.

Carbon Pollution Being Captured, Stored and Used to Produce More Domestic Oil

A breakthrough project in Texas is using carbon capture, utilization and storage technology to safely secure carbon dioxide pollution underground while providing an economic benefit and increasing our energy security.

A Renewable Boost for Natural Gas
The new hybrid solar-natural gas system from Pacific Northwest National Laboratory (PNNL) works through concentrating solar power, which uses a reflecting surface to concentrate the sun's rays like a magnifying glass. In the case of the new system from PNNL, a mirrored parabolic dish directs sunbeams to a central point, where a device absorbs the solar heat to make syngas.| Photo courtesy of PNNL.

The race to transition to cleaner, greener natural gas power plants is getting a boost from an unlikely source -- solar energy.

Solar, Wind, Hydropower: Home Renewable Energy Installations
This Lakewood, Colorado home was built in 1956. Brent and Mo Nelson upgraded the home with multiple solar technologies including; daylighting, passive solar and active solar. They also have an 80 gallon solar hot water heater. | Photo by Dennis Schroeder, National Renewable Energy Laboratory.

A guide to figuring out if solar, wind or other small renewable energy system is right for you.

New Nuclear Energy Awards Give Students Hands-On Research Experience
Bojan Petrovic, a senior researcher at Georgia Institute of Technology, will lead an IRP team in developing a high-power light water reactor design with inherent safety features. | Photo courtesy of Georgia Institute of Technology

Students and researchers in Georgia, Illinois and Tennessee will conduct nuclear energy research to address the industry’s complex issues thanks to an Energy Department award.