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The commercial building energy code development processes  are administered by ASHRAE and the International Code Council (ICC). These organizations perform periodic revisions through separate established processes, allowing stakeholder participation from industry, the public and governmental entities. Once the revision process is completed, a new edition of the model code is published, which allows for adoption by states and localities.
ASHRAE and the ICC also produce Green Building Codes  following similar processes and promoting higher efficiency levels than minimum code requirements.
Support and Analysis
The U.S. Department of Energy (DOE) participates in the development of commercial building code and standards to foster increased efficiency in new and existing commercial buildings. In support of this goal, DOE evaluates energy and cost benefits associated with code changes:
DOE reviews both the IECC and Standard 90.1 for opportunities to save energy, then prepares and submits proposed changes with supporting documentation for consideration. DOE maintains membership on the Standard 90.1 Standing Standards Project Committee (SSPC 90.1) and provides support through each of its five subcommittees. For the IECC, DOE develops and submits proposed changes, and supports those proposals through the public hearing process. Pursuant to those activities, newer editions of both Standard 90.1 and the IECC provide criteria fostering increased energy efficiency in commercial buildings. More information on these processes may be found by visiting the ASHRAE  or ICC  websites.
For more information on the DOE role in the development of building energy codes, visit the About  section of this website. Past commercial DOE code change proposals for the IECC are also archived .