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Illinois Energy Codes
Illinois Energy Conservation Code (20 ILCS 3125/15)
The Illinois Energy Conservation Code requires design and construction professionals to follow the latest published edition of the International Energy Conservation Code (IECC) including amendments adopted by CDB for all commercial and residential buildings in the State.
Illinois Stretch Energy Code (20 ILCS 3125/55)
The Illinois Stretch Energy Code allows municipalities and projects authorized or funded by the Board to achieve more energy efficiency in buildings than the Illinois Energy Conservation Code through a consistent pathway across the State.
Additional information including training opportunities, interpretations and frequently asked questions can be found on the EnergySense Resilience Center’s Website or emailed to energycode@illinois.edu
Resources for Illinois Energy Codes.
Contact Information
Robert Coslow
Phone: 217-685-4079
TDD: 217-524-4449