Illinois, via the Illinois Capital Development Board, has adopted a new statewide energy code that took effect Jan. 1. Any projects applying for a permit on or after Jan. 1 will need to comply with the code, which is based on the International Code Council’s International Energy Conservation Code, 2021 Edition, with Illinois-specific amendments.
In accordance with the Energy Efficient Building Act, the Capital Development Board is required to review and adopt the most current version of the IECC within one year of its publication date, according to Smart Energy Design Assistance Center. The code then takes effect in Illinois within six months following its adoption by the Capital Development Board. The board, in conjunction with the Illinois Environmental Protection Agency and the Illinois Energy Conservation Advisory Council, initiates the cycle for the IECC to be updated every three years.
