Oklahoma Clean Diesel (DERA) Program

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The Clean Diesel program has allowed many entities across the state to replace their old diesel vehicles, thus improving the air quality for the children, environment, and citizens of Oklahoma. More than 43 school districts have been able to replace and/or retrofit more than 287 diesel school buses. This EPA-sponsored program is funded under the federal Diesel Emissions Reduction Act (DERA); Volkswagen Settlement funds are used to match federal funds.


Current Program: Fiscal Year 2022
Past Programs

DEQ has been running the Clean Diesel program since FY 2008. For more information please visit the Air Funding Program Recipients.

FY21 Materials

Factsheets and Outreach


If you have questions about the program please see the Frequently Asked Questions (FAQ) page.

For more information on the VW Settlement please see the Important documents on the Volkswagen Home Page or the Volkswagen History Page.

Subscribe to Clean Diesel Updates: If you would like to receive updates on the Clean Diesel Grant Program you can sign up for our Clean Diesel mailing list.