U.S. Green Building Council
Through cost-efficient and energy-saving green buildings, the U.S. Green Building Council promotes a sustainable future for the United States and for the world. Since it was founded in 1993, the not-for-profit organization has developed a variety of programs and services, including the LEED green-building-certification program, a process that rates the design, construction, and operation of buildings. Currently, USGBC comprises eighty local affiliates, more than 17,000 member companies and organizations, and more than 140,000 LEED professional credential holders.