Oregon DEQ diesel emissions mitigation fund grant application open through mid-October

Diesel Emissions Mitigation Grants

The Oregon Department of Environmental Quality is providing approximately $8 million this year in grant funding for diesel equipment owners to replace older and more polluting diesel engines with new, cleaner technologies and exhaust control retrofits. The program is designed to help address health and environmental impacts from diesel emissions in Oregon.

Apply for grant funding

The 2026 application is the last opportunity for the Diesel Emissions Mitigation Grant from DEQ. Submissions must be received by DEQ no later than 5 p.m. on October 21, 2026.

Business, government, and tribal diesel equipment owners across the state are encouraged to apply for funding for projects that reduce diesel emissions in Oregon. Owners of medium- and heavy-duty vehicles requiring retrofits under the new Diesel Retrofit Compliance Program may also apply for funding to support the installation of diesel particulate filters.

Visit the DEQ web page

• To learn about eligible diesel projects
• Register on DEQ's grant web portal
• Apply for funding using the Diesel Emissions Reduction Grant User Guide

Technical assistance is available

Reach out to DEQ's technical assistance staff by emailing [email protected].
Utilize the City's free fleet assessment and grant services for COBID small firms with a bonding capacity under $30 million.