ENERGY STAR building certification is part of the U.S. Environmental Protection Agency's (EPA) broader program for rating the energy efficiency of a wide range of products.
The ENERGY STAR program rates the energy efficiency of buildings on a 1 to 100 percentile scale. A score of 75 means that a building is more efficient than 75% of comparable buildings.
The LEED rating system, developed by the U.S. Green Building Council (USGBC), recognizes and rates buildings, homes and communities that are designed, constructed, maintained and operated for improved environmental and human health performance.
Over 50,000 projects are currently participating in the commercial and institutional LEED rating systems, comprising over 9 billion square feet of construction space in all 50 states and 130 countries.