GSA says LEED® is most credible among green rating systems
The General Services Administration (GSA), which operates as the federal government's landlord, issued a report finding the USGBC's LEED® system to be the most credible among five different systems evaluated.
The GSA report was conducted under a contract with the U.S. Energy Department's Pacific Northwest National Laboratory (PNNL). In a report submitted by the laboratory to GSA, "Sustainable Building Rating System Summary," PNNL researchers compared the following five methods for rating whether a building design and construction is green: Building Research Establishment's Environmental Assessment Method (BREEAM); Comprehensive Assessment System for Building Environmental Efficiency (CASBEE); GBTool; Green Globes US; and LEED.