Renewable Energy 
The U.S. Department of Energy (DOE) contributes to the prosperous future of the nation by working to provide energy that is clean, abundant, reliable, and affordable. This includes not only traditional, or nonrenewable, energy, but also renewable energy. Renewable energy is energy that is easily replenished, such as wind energy, solar power, hydropower, biomass power, and geothermal power. Nonrenewable energy is energy that cannot be recreated and includes fossil fuels such as coal, oil, and natural gas.
The DOE Office of Legacy Management (LM) is committed to excellence in environmental stewardship and continues to develop and implement innovative uses of renewable energy sources at its many sites across the county. LM’s Renewable Energy Program emphasizes the installation of on-site renewable energy projects and the purchase of green energy credits.