Building Energy Codes by State

Are you aware of your state’s energy code? You should be, especially if you’re planning on installing a new commercial roofing system! These important codes establish minimum requirements for energy-efficient design and construction for new and renovated buildings.

Code requirements vary state to state, but most of the basic requirements are adopted from the International Code Council’s publications. For example, the standard International Energy Conservation Code (IECC) is adopted by most states. States and municipalities, however, may choose to adopt more stringent guidelines.

The benefits of energy codes include:

  • Reduced energy consumption
  • Increased building comfort and indoor air quality
  • Reduced greenhouse gas emissions
  • Improved public health and environment
  • Compliance with building code as a whole

To find the current energy codes for your state, view our chart below or visit the U.S. Department of Energy’s website, Building Energy Codes Program at Then, select the Adoptions tab, and click Status of State Energy Code Adoption. Alternatively, use this direct link:

The Building Energy Codes Program website includes a color-coded, quick reference map for current commercial and residential energy codes and the standards adopted by each state. Note that the most prevalent Energy Codes specified are the American Society of Heating, Refrigerating and Air-Conditioning (ASHRAE) and the International Energy Conservation Code (IECC).