Department of Energy.

The United States Department of Energy (DOE) is a Cabinet-level department of the United States government concerned with the United States' policies regarding energy and safety in handling nuclear material. Its responsibilities include the nation's nuclear weapons program, nuclear reactor production for the United States Navy, energy conservation, energy-related research, radioactive waste disposal, and domestic energy production. DOE also sponsors more basic and applied scientific research than any other US federal agency; most of this is funded through its system of United States Department of Energy National Laboratories.

The agency is administered by the United States Secretary of Energy, and its headquarters are located in southwest Washington, D.C., on Independence Avenue in the Forrestal Building, named for James Forrestal, as well as in Germantown, Maryland.

The Department of Energy was formed after the oil crisis on August 8, 1977 by President Jimmy Carter's signing of legislation, The Department of Energy Organization Act of 1977 (P.L. 95-91, 91 Stat. 565).

The United States, eager to make a nuclear bomb before any other nation, started the Manhattan Project under the eye of the U.S. Army Corps of Engineers. After the war, the Atomic Energy Commission was created to control the future of the project.

In 1974, the AEC was reinstated and gave way to Nuclear Regulatory Commission, which was tasked with regulating the nuclear power industry, and the Energy Research and Development Administration, which was tasked to manage the nuclear weapon, naval reactor, and energy development programs. Only a few years after that, the Energy Crisis called attention to unifying these two groups. The Department of Energy Organization Act of 1977, which Carter signed on August 4, 1977, created the Department of Energy, which assumed the responsibilities of the Federal Energy Administration, the Energy Research and Development Administration, the Federal Power Commission, and programs of various other agencies.

The department began operations on October 1, 1977.