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Are You Up to Date on the Illinois Energy Code?

Updated: Oct 16, 2019

The updated Illinois Energy Conservation Code based on the 2018 IECC with Illinois Amendments became effective on July 1, 2019. The law requires all major commercial and residential construction to follow this comprehensive statewide energy code. Additionally, renovations, alterations, additions, and repairs to most existing commercial and residential buildings must follow the latest Illinois Energy Conservation Code and the ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) Standard 90.1 “Energy Standard for Buildings except Low-Rise Residential Buildings.”

What is the Illinois Energy Code?

The law is designed to help protect the environment and reduce energy consumption. By following an energy conservation code, property owners can reduce air pollution, moderate energy demand, and stabilize energy costs.

How can I learn more about the Illinois Energy Code?

The Smart Energy Design Assistance Center (SEDAC), a public-private partnership between 360 Energy Group and the University of Illinois at Urbana-Champaign, is the state energy code training partner on behalf of the Illinois EPA Office of Energy. SEDAC hosts in-person workshops throughout Illinois to educate architects, code officials, building engineers, and other qualified personnel. SEDAC also provides webinars and online energy code training.

Upcoming Workshops and Webinars:

“Top Energy Code Requirements You Should Know”

- October 30, 2019 from 1-4 pm in Belleville, IL

- November 15, 2019 from 1-4 pm in Aurora, IL

- Webinar: December 18, 2019 from noon to 1 pm

Find out more and register here.

Technical Support

Have a question about the Illinois Energy Conservation Code or SEDAC’s energy code training opportunities? Call SEDAC at 800.214.7954 or email at for technical support and individualized guidance. You can also check out SEDAC’s Frequently Asked Questions page.


Please visit the SEDAC website to stay up to date on energy code announcements and upcoming workshops or webinars.


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