The Smart Energy Design Assistance Center (SEDAC), in partnership with the Illinois EPA Office of Energy, provides training to increase awareness of the Illinois Energy Conservation Code and to improve the energy efficiency of new construction and renovation in Illinois.
SEDAC offers workshops, webinars, online training, resources, and technical support. Our training program serves community code officials, construction professionals and trades, and design professionals such as architects and engineers in Illinois.
Funding provided in whole or in part by the Illinois EPA Office of Energy.
The Illinois Energy Code Updated to the 2021 ILECC on January 1, 2024
In accordance with the Energy Efficient Building Act, the Capital Development Board (CDB) reviews and adopts the most current version of the International Energy Conservation Code (IECC) within one year of its publication date. The Code becomes effective in Illinois as specified by CDB within 6 months following its adoption by the CDB.
In conjunction with the Illinois Environmental Protection Agency and the Illinois Energy Conservation Advisory Council, the CDB initiates the cycle to update the Illinois Energy Conservation Code every three years, following the subsequent updates to the IECC.
The most recent ruling on updating the Illinois Energy Efficiency Conservation Code occurred on November 7, 2023 when the Joint Committee on Administrative Rules (JCAR) (part of the Illinois General Assembly) approved the update from the 2018 Illinois Energy Conservation Code to the 2021 IECC with amendments. The CDB set the effective date to be January 1, 2024. Any projects applying for a permit on or after January 1, 2024 need to comply with the new code.
The 2021 Illinois Energy Conservation Code can be accessed here:
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2021 ILECC – 2021 IECC with integrated IL Amendments
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2021 IECC
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Illinois Amendments
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2022 Chicago Energy Transformation Code
2024 IECC Coming to IL in Late 2024
The 2024 IECC has been published and may be found here. Following the timeline established by the Energy Efficient Building Act places the adoption of the 2024 IECC (as the basis of the ILECC) no later than the end of May 2025 and the effective date no later than the end of November 2025. The Capital Development Board will publish the most current information on their website about the amendment and adoption process. SEDAC plans to have training on the 2024 ILECC beginning in 2025.
Training & support services
Energy Code Resources
What people are saying about our training & technical support
"Thank you. This is a gold mine of energy code info."
Robert, Mechanical Engineer
"The presentation was excellent--thorough and directly useful."
Jack, Architect
"This was probably one of the most successful seminars we've had. I got a lot of good feedback from it."
Harold, Plumbing Inspector
"Thank you! The SEDAC programs are really informative, and a good balance of practical information and code references. Keep up the good work!"
Eric, Engineer
"Thanks for doing this. This is the only resource I have access to learn about energy codes."
Anonymous
"Thank you for sending me the certificate and reporting these credits to AIA and ICC. I am signed up for six training sessions total with SEDAC over the next few months."
Daniel, Code Official
"Thank you! That's the most clear explanation I've gotten on this topic. It's greatly appreciated!"
Brett, Energy Modeler
"Thank you so much for your clear response. I have been wondering about this for quite some time. I'm going to print this out and insert it in my energy code book."
David, Code Official
"I think the team has done a good job of taking a boring subject for most architects and making it interesting and easy to understand. The visuals have always been interesting."
Anonymous