Building Energy Code

March 10, 2023


Much of the information presented in this summary is drawn from the U.S. Department of Energy’s (DOE) Building Energy Codes Program and the Building Codes Assistance Project (BCAP). For more detailed information about building energy codes, visit the DOE and BCAP web sites.

Legislation passed in March 2010 authorized the Alabama Energy and Residential Code (AERC) Board to adopt mandatory residential and commercial energy codes for all jurisdictions. In 2015, the AERC board updated its energy code to the 2015 Alabama Residential Energy Code and 2015 Alabama Commercial Energy Code. The residential code is based on the 2015 International Energy Conservation Code (IECC) with modifications and will take effect on October 1, 2016. The commercial code is based on the ANSI/ASHRAE/IES standard 90.1-2013 and will take effect on January 1, 2016. 

The 2015 code succeeds the 2009 International Residential Code and the 2009 IECC for commercial buildings which were in effect starting October 2012. 

Click here for more information about Alabama's building codes.

Program Overview

Implementing Sector: State
Category: Regulatory Policy
State: Alabama
Incentive Type: Building Energy Code
Web Site:
Start Date:
Eligible Renewable/Other Technologies:
  • Comprehensive Measures/Whole Building
Residential Code: 2015 International Energy Conservation Code (IECC) with Alabama amendments
Commercial Code: ANSI/ASHRAE/IES Standard 90.1-2013
Code Change Cycle: Updated in 2017
Jurisdictions: Mandatory throughout state


Name: Alabama Code §§41-23-80 through 85


Name: Karl Frost
Organization: Energy Efficiency Unit Chief - Energy Divisio
Address: 401 Adams Avenue
Montgomery AL 36104
Phone: (334) 242-5322

This information is sourced from DSIRE; the most comprehensive source of information on incentives and policies that support renewables and energy efficiency in the United States. Established in 1995, DSIRE is operated by the N.C. Clean Energy Technology Center at N.C. State University.