The built environment has a profound impact on our natural environment, economy, health, and productivity, according to the US Green Building Council (USGBC). In the United States alone, buildings account for:
* 65% of electricity consumption
* 36% of energy use
* 40% of greenhouse gas emissions
* 30% of raw materials use
* 30% of waste output (136 million tons annually)
* 12% of potable water consumption