Since the 1970s, various strategies have been pursued to address concerns relating to U.S.
dependence on foreign petroleum. The Department of Energy, by virtue of its mission, has been
designated as a leader in this endeavor. As one element of its effort, the Department has set goals,
based on statutory requirements, for replacing its own use of petroleum-based motor fuels with
alternative fuels, such as compressed natural gas, propane, ethanol, bio-diesel, and electricity.