Energy

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.
www.eia.doe.gov/

DOE: Energy Science and Technology Virtual Library - Collections of scientific and technical information from the U.S. Department of Energy (DOE) with a distributed searching capability.
www.osti.gov/energyfiles/

DOE: Office of Science and Technology Information (OSTI) - Access to a collection of scientific and technical information from U.S. Department of Energy (DOE).
www.osti.gov/

International Energy Annual (IEA) - Data summary for world energy production, consumption, price and carbon dioxide emissions.
www.eia.doe.gov/iea/

Wikipedia: Energy - Free encyclopedia article explaining the scientific notion of energy. Includes units of measure, energy transformation concepts, types of energy, history and uses.
en.wikipedia.org/wiki/Energy