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.
Clean Energy
Learn more about energy from solar, wind, water, geothermal, biomass and nuclear.
Electric Power
Learn more about how we use electricity as an energy source.
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.
Hydrogen & Fuel Cells
Fuel cells use the energy from hydrogen in a highly efficient way -- with only water and heat as byproducts.
Fossil
Learn more about our fossil energy sources: coal, oil and natural gas.