U.S. Department of Energy (DOE) - Governmental department whose mission is to advance energy technology and promote related innovation in the United States.
DOE: Energy Information Administration (EIA) - Section of the U.S. Department of Energy (DOE) providing statistics, data, analysis on resources, supply, production, consumption for all energy sources..
Wikipedia: Energy - Free encyclopedia article explaining the scientific notion of energy. Includes units of measure, energy transformation concepts, types of energy, history and uses..