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Air Emissions Reporting

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Environment, Great Lakes, and Energy

Air Emissions Reporting

The federal Clean Air Act requires each state to maintain an inventory of air pollution emissions for facilities meeting specific criteria. The inventory is required to be updated every year. Each year, approximately 2,000 facilities report emissions.  The emissions data is audited by EGLE staff and submitted to the United States Environmental Protection Agency (USEPA) for addition to the national data bank. This information is used to track air pollution trends, determine the effectiveness of current air pollution control programs, serve as a basis for future year projections of air quality, track source compliance, provide information for permit review, and calculate the emissions portion of the air quality fee. Michigan's emission inventory is collected annually through MiEnviro Portal.

To read more and access the MiEnviro Portal log-in page, please visit the MiEnviro Portal home page.

Beginning in 2024 Emissions Reporting will be done via MiEnviro Portal.  All users need an account to access their sites.

Actions that should be taken prior to reporting season in January 2024.

  1. Create a MiEnviro Portal Account.
  2. Attend the Equipment Inventory Review Webinar in Fall 2023 (information coming soon).
  3. Sign up for updates on available training and resources.
  4. Review the recent training (August 30, 2023):  "MiEnviro Portal for Air Webinar: Emission Reporting Account Creation".
  5. Previous actions that should have been done during 2022 reporting.
MiEnviro Portal Certifier Agreement Form (EQP9227)
A computer keyboard highlighting a key labeled "Fees"
Stacked boxes with the word "Inventory" resting on top of them