Energy codes can transform our future.

The Energy-Efficient Codes Coalition (EECC) is dedicated to the improvement of the International Energy Conservation Code (IECC), the model energy code in the US, and advocates for its adoption in states and local jurisdictions throughout the country.
Chicago skyline aerial drone view from above, city of Chicago downtown skyscrapers and lake Michigan cityscape, Illinois, USA

Since 2006, the IECC has had a more than 40% increase in energy efficiency.

Infographic: How Codes Affect You

This graphic shows how a space built to a more efficient energy code increases comfort and results in lower energy bills for your home and business.

How Energy Codes Affect You

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    Latest resources

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    News and Opinions
    Blog: Why Leslie Knope Would Be Proud of the New Federal Energy Efficiency Requirements (May 2023)

    IMT’s Cherylyn Kelley explores why the HUD proposal to reference the 2021 IECC is such a Big Deal.

    EECC Codes-Carbon Calculator

    A tool for cities & states to estimate the energy and carbon savings of updating energy codes. Be sure to click “Enable Content” at top.

    Fact Sheets
    HUD Determination Fact Sheet (ACEEE)

    This fact sheet produced by ACEEE details why HUD’s proposal to update the referenced energy codes to the 2021 IECC/ASHRAE 90.1-2019 is so important.