The International Energy Conservation Code (IECC) is a part of the international family of codes (I-codes) published by the International Code Council (ICC). The suite of codes, including the energy code, is updated every three years to incorporate current technologies, costs, and practices. It is available for adoption and use by jurisdictions internationally. It is within a governmental jurisdiction and is intended to be accomplished through adoption by reference in accordance with proceedings establishing the jurisdiction’s laws. At the time of adoption, jurisdictions should insert the appropriate information in provisions requiring specific local information, such as the name of the adopting jurisdiction.
The first edition of the International Energy Conservation Code (1998) was based on the 1995 edition of the model energy code promulgated by the Council of American Building Officials (CABO).
2018 IECC
The final action hearings for the 2018 IECC were held during October 2016 in Kansas City, MO. The updated energy code will be published in the spring of 2017.
- DOE Position Brief on Energy Efficiency and Renewable Energy in Residential Building Energy Codes During the 2018 IECC Code Development Cycle
- DOE Proposals for the 2018 IECC
- ICC Code Development Cycle
- Interruption in the Cycle: System glitches alter ICC code development path for 2016
- The 2018 IECC and Multifamily Homes | NBI
2015 IECC
The 2015 IECC furthers the goals of previous model code iterations by addressing energy efficiency on several fronts, including cost savings, energy use reductions, natural resource conservation, and environmental impact. The 2015 IECC is fully compatible with all of the International Codes (I-Codes) published by the International Code Council (ICC). Purchase the 2015 IECC here.
BCAP 2015 IECC News Articles
- Northern Nevada Welcomes a New Compliance Path September 28, 2016
- The Energy Rating Index: What does the future hold? March 17, 2016
- Energy Code Adoptions in 2015 February 1, 2016
- DOE Issues Final Determination On The 2015 IECC June 11, 2015
- My View: Utah Needs New Energy Codes That Make Buildings, Homes More Efficient June 7, 2015
- What’s New in the 2015 IECC Commercial Provisions? May 12, 2015
- New Year, New Codes February 24, 2015
- Highlights of the 2015 IECC Residential Code Changes January 28, 2015
- What Have We Done Lately? December 22, 2014
- CdpACCESS: A New, Easy Way To Get Your Vote Counted July 25, 2014
- HERS and the IECC Performance Path July 25, 2014
- Code Officials Defeat Proposals To Rollback Historic Efficiency Gains In America’s Model Energy Code October 8, 2013
- 2013 Mayors Resolution Supports Stronger 2015 IECC July 15, 2013
Additional 2015 IECC Resources
- Airtight, Tested Right: Blower Door Tests
This series of videos from Urban Green Council is intended to update contractors, architects and homeowners about the new testing requirement for New York State. However, it is a great resource for any state that has adopted the 2015 IECC. - Energy Code Essentials (available for purchase from ICC)
- Roof and Wall Thermal Design Guide: Applying the Prescriptive Insulation Standards of the 2015 I-Codes
- 2015 IECC Commercial Requirements
- Energy and Energy Cost Savings Analysis of the 2015 IECC for Commercial Buildings (August 2015)
- National Cost-Effectiveness of the Residential Provisions of the 2015 IECC (June 2015)
- 2015 IECC: Energy Savings Analysis (May 2015)
- 2015 IECC Determination of Energy Savings: Preliminary Technical Analysis (August 2014)
- Fact Sheet: Energy Efficient Residential Construction
- Article: RESNET and International Code Council Work Together to Ease Transition for Energy Rating Index Compliance Option in the 2015 International Energy Conservation Code (May 29, 2014)
- Essential Seven: Commercial Energy Code Voting Guidance for the 2015 IECC Commercial Provisions
- US Conference of Mayors Resolution No. 42 – Adopted June 24, 2013
Endorsing the maximum achievable building energy efficiency improvements in the 2015 IECC
As of October 2016, the following states have adopted and implemented the 2015 IECC:
Hawaii | Illinois | Maryland | Massachusetts | Michigan | New Jersey | New York | Vermont | Washington
2012 IECC
The 2012 IECC, originally published in April 2011, establishes minimum regulations for energy efficient buildings using prescriptive and performance-related provisions. It is founded on broad-based principles that make possible the use of new materials and new energy designs. The 2012 IECC is also fully compatible with all of the International Codes (I-Codes) published by the International Code Council (ICC). Purchase the 2012 IECC here.
BCAP 2012 IECC Resources
- 2012 IECC Incremental Cost Analysis
Study to quantify the incremental construction cost of upgrading to the 2012 IECC in certain states and cities - Potential Nationwide Savings from the 2012 IECC
Estimates annual savings if all states adopted the 2012 IECC and achieved full compliance - Sample IECC Support Letters
An assortment of templates and example letters in support of energy efficient codes - Local and jurisdictional adoptions
A list of cities and jurisdictions that have adopted energy codes such as the 2012 IECC
Additional 2012 IECC Resources
- Identification of RESNET HERS Index Values Corresponding to Minimal Compliance with the 2012 IECC Performance Path May 2014
- Guide to the Changes between the 2009 and 2012 International Energy Conservation Code May 2012
- DOE Final Determination on the 2012 IECC
- Green Building Advisory 2012 IECC Overview
- Webinar: Residential Provisions of the 2012 IECC Explained
- ICC Codes and Standards Forum
- Article: Tougher Energy Codes Push Framing Forward February 20, 2012
- 2012 and 2009 IECC Code Education | Kenergy
- The Top 12 Changes in the Residential Provisions of the 2012 IECC
- Estimate of Energy and Cost Savings from Proposed IECC Code Changes for 2012
2009 IECC
BCAP 2012 IECC Resources
- 2009 IECC Incremental Cost Analysis
Study to quantify the incremental construction cost of upgrading to the 2009 IECC in certain states and cities - Local and jurisdictional adoptions
A list of cities and jurisdictions that have adopted energy codes such as the 2009 IECC
- Comparison of ASHRAE Standard 90.1-2007 and the 2009 IECC with Respect to Commercial Buildings December 2009
- Guide to the Changes between the 2009 and 2012 International Energy Conservation Code May 2012
As of May 6, 2015, the 2009 IECC/ASHRAE 90.1-2007 is established as the minimum standard for new construction of certain HOME and FHA-insured properties (both multifamily and single family) as well as USDA- guaranteed single family homes. The Notice applies to new construction only.
Read more on HUD website.