Source data is 2003 CBECS Survey Data, showing the 2,588 buildings in the survey that are 20,000 to 1 million square feet in size. Click on any combination of Facility Types in the legend, the average MMBtu and Square Footage are shown at the crosshair. Click By Region to see the buildings aligned with US Region. The Energy Use Intensity (EUI) is calculated from the annual MMBtu divided by the Square Feet of the combined facility types.