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Publications

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Cost-Effectiveness Analysis of the 2021 IECC for the State of Michigan

Document Number: PNNL-SA-188473
Document Type: Cost-effectiveness
Publication Date:

The State of Michigan is in the process of updating its current state residential energy code, which is an amended version of the 2015 International Energy Conservation Code (IECC) to the 2021 IECC. The Michigan Bureau of Construction Codes, a bureau within Licensing and Regulatory Affairs (LARA), requested a cost-effectiveness analysis, that considers the Michigan Stille-Derossett-Hale Single State Construction Code Act,1 comparing the current state residential energy code to the unamended 2021 IECC.

The resulting analysis shows that a home designed to comply with the residential provisions of the 2021 IECC would yield short-term and long-term consumer benefits compared to a home built to the Michigan-amended 2015 IECC.