energy

U.S. energy usage

industrial
Facilities and equipment used for producing and processing goods. Major uses: 22% chemical production, 16% petroleum refining, 14% metal melting/refining

transportation
Vehicles which transport people/goods on ground, air or water. Major uses: 61% gasoline fuel, 21% diesel fuel, 12% aviation

residential
Living quarters for private households. Major uses: 32% space heating, 13% water heating, 12% lighting, 11% air conditioning, 8% refrigeration, 5% electronics

commercial
Service-providing facilities and equipment (businesses, government, other institutions). Major uses: 25% lighting, 13% heating, 11% cooling, 6% refrigeration, 6% water heating, 6% ventilation, 6% electronics

Reference:

www.eere.energy.gov/buildings/tech/lighting/

US Dept. of Energy, “Manufacturing Trend Data" (2002), Table 2b
US Dept. of Energy, “Annual Energy Outlook" (February 2006),Table A2
US Dept. of Energy, “Buildings Energy Data Book" (September 2006), secs. 1.2.3 and 1.3.3