U.S. green buildings: number of LEED-certified projects 2000-2019
LEED certification
LEED is one of the most commonly used green building rating systems in the world. It is available for a wide variety of building project types and acts as a framework to guide health, energy efficient, and cost-saving green buildings. In order to earn the certification, the project must comply with mandatory prerequisites as well as various other optional credits. Several different types of rating systems have been implemented since the establishment of LEED, including the LEED for Homes Rating System, LEED energy modeling, and the basic LEED NC rating system.