DOE Confirms 2018 IECC Saves Energy

Codewatcher energy saving IECC DOE

The U.S. Department of Energy (DOE) has published a preliminary determination of energy savings for the 2018 International Energy Conservation Code (IECC), preliminarily affirming that the updated code will increase energy efficiency in residential buildings.

DOE analysis indicates that buildings meeting the 2018 IECC (as compared to the previous 2015 edition) would result in national energy savings of approximately: 

  • 1.97 percent energy cost
  • 1.91 percent source energy
  • 1.68 percent site energy

Interested stakeholders are invited to submit public comments within 30 days from publication of this Notice in the Federal Register. DOE is required to issue its determination following the publication of an updated edition of the IECC. More information, including supplemental energy and cost savings analysis, is available via the DOE Building Energy Codes Program.

 Learn more