U.S. Department of Energy

The Department of Energy's overarching mission is to advance the national, economic, and energy security of the United States; to promote scientific and technological innovation in support of that mission; and to ensure the environmental cleanup of the national nuclear weapons complex

The mission of the Energy Department is to ensure America’s security and prosperity by addressing its energy, environmental and nuclear challenges through transformative science and technology solutions.Learn more.

As United States Secretary of Energy,Jennifer M. Granholmleads an agency tasked with maintaining a safe, secure and effective nuclear deterrent and reducing the threat of nuclear proliferation, overseeing the United States’ energy supply, carrying out the environmental clean-up from the Cold War nuclear mission, and the 17 National Laboratories.