This chart depicts the primary energy intensities of U.S. industry by subsector in 2010 versus shipments. The size of the rectangles gives the total energy use of each subsector.
The top five energy consuming industrial subsectors in the U.S. consume more than half of the total industrial energy use. They are refining, pulp & paper, food, aluminum, and iron & steel. Most industrial value is created not by these basic materials industries but by manufacturing based on them, at far lower average energy intensity.
U.S. Energy Information Administration. 2010. Annual Energy Outlook 2010. May 11. link