Nationwide Analysis Reports

The Building Energy Codes Program was tasked by the U.S. Department of Energy to analyze the potential energy savings if current state building energy codes were updated to the baseline codes in the American Recovery and Reinvestment Act of 2009 (ARRA):  the 2009 International Energy Conservation Code^® (IECC) for low-rise residential buildings and ANSI/ASHRAE/IESNA Standard 90.1-2007 (Standard 90.1-2007) for commercial and high-rise multifamily residential buildings. The final reports are available below:

Impacts of the 2009 IECC for Residential Buildings at State Level, (September 2009)

Impacts of Standard 90.1-2007 for Commercial Buildings at State Level, (September 2009)

Links to the residential and commercial analysis reports for individual states are available in the state status pages of the Status of State Energy Codes database.