Introduction to the Illinois Energy Conservation Code

2015 Illinois Energy Conservation Code 

The Capital Development Board (CDB) has completed the cycle for the Illinois Energy Conservation Code to update from the 2012 International Energy Conservation Code ® (IECC) to the 2015 Illinois Energy Conservation Code. In accordance with the  Energy Efficient Building Act, CDB is required to review and adopt the most current version of the IECC within one year after its publication date. The Code will then become effective within 6 months following its adoption by CDB. The effective date for the 2015 Illinois Energy Conservation Code, with  Illinois Amendments, to become law in the State of Illinois was January 1, 2016.

When developing Code adaptations, rules, and procedures for compliance with the Code, CDB is required to seek input from representatives of the building trades, design professionals, construction professionals, code administrators, and other interested entities affected by the new Code. To ensure input from these groups, CDB created the  Illinois Energy Code Advisory Council which has representatives from each of the groups listed above.

2018 Illinois Energy Conservation Code

The work has begun to draft the 2018 Illinois Energy Conservation Code. The CDB, in conjunction with the Illinois Environmental Protection Agency and the  Illinois Energy Conservation Advisory Council, has initiated the cycle for the Illinois Energy Conservation Code to update from the 2015 International Energy Conservation Code (IECC) to the 2018 IECC. The CDB has made an  announcement that amendment proposals are being accepted through March 31, 2018.