Commercial Buildings Energy Consumption Survey

"The U.S. Energy Information Administration's Commercial Buildings Energy Consumption Survey (CBECS) is the only nationally representative source of statistical information on energy-related characteristics, consumption, and expenditures for the nation's 5.6 million commercial buildings totaling 87 billion square feet of floor space.Building characteristics information from the 2012 survey is being released in stages through the spring, and consumption and expenditures data will follow later in the year..."
Buildings energy consumption