DOE Evaluates Energy Code's Savings for Residences

Originally published by: U.S. Department of EnergyMay 4, 2019

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The Department of Energy (DOE) has published its affirmative determination that the 2018 International Energy Conservation Code (IECC) will increase energy efficiency in residential buildings. According to the DOE analysis, "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"

Comments can be submitted within 30 days from publication of this Notice in the Federal Register.

ASHRAE has recently published its own standard for residential buildings that presents a new approach to delivered residential building energy performance and seeks to deliver residential building energy performance that is at least 50 percent more efficient than the energy efficiency defined by the 2006 IECC. To learn more about ASHRAE Standard 90.2 – Energy Efficient Design of Low-rise Residential Buildings, click here.

DOE conducted a technical analysis in support of its determination. This analysis assesses Standard 90.1 compared to the previous edition, and estimates the anticipated energy consumption of buildings required to meet the updated Standard.

Energy Savings Analysis: ANSI/ASHRAE/IES Standard 90.1-2016