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National Energy Codes


Energy conservation has become a critical consideration in the design and operation of buildings over the years, and the codes that regulate energy use have become more sophisticated and complex. The two major energy codes in use, the International Energy Conservation Code (IECC) developed and published by the International Code Council (ICC), and Standard 90.1 developed by the American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE), have a significant impact on the design and installation of electrical systems and the selection of electrical products.

Because of the importance of understanding the energy conservation requirements around the United States, NEMA’s Field Reps track development and adoption of energy codes in each state.

Adoption of the Commercial Energy Code by State

Click here to download the Adoption of the Commercial Energy Code by State in PDF.