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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    Fact Sheets
    Summary: 2024 IECC Residential PC Draft #1

    This document is list of significant changes approved by the Residential Consensus Committee for inclusion in the 2024 IECC Public Comment Draft #1.

    News and Opinions
    Blog: How the Federal Government Can Reduce Home Energy Costs (Aug 2022)

    The White House and the federal agencies can lower residential energy costs by adopting the 2021 International Energy Conservation Code.

    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.