The USGBC is a non-profit organization committed to a prosperous and sustainable future for our nation through cost-efficient and energy-saving green buildings. LEED is an internationally recognized green building certification system, providing third-party verification that a building or community was designed and built using strategies aimed at improving performance across all the metrics that matter most: energy savings, water efficiency, CO2 emissions reduction, improved indoor environmental quality, and stewardship of resources and sensitivity to their impacts.