Clean Diesel Grant Programs
Forecasted
Clean Diesel Grant Programs support public and private fleets across Wisconsin with engine retrofits, upgrades, and vehicle and equipment replacements to reduce diesel emissions and maximize health benefits.
Funder: Wisconsin Department of Natural Resources
Due Dates (Anticipated): December 2026 (Wisconsin applications) | January 2027 (EPA national applications)
Funding Amounts: Wisconsin 2022 cycle: approximately $360,000 total; separate EPA 2026 national program: $180 million total, up to $12 million per award
Summary: Grants support diesel-emissions reductions from public and private vehicle fleets across Wisconsin.
Key Information: Wisconsin grants and EPA national grants are separate programs with different eligibility and submission requirements.
Description
The Wisconsin Department of Natural Resources (DNR) administers Clean Diesel Grant Programs to reduce diesel emissions from public and private fleets statewide. Wisconsin’s Diesel Emissions Reduction Act (DERA) funding supports cleaner engines, vehicles, and equipment through retrofits, engine upgrades, and replacements. The 2022 Wisconsin cycle covered school and transit buses and nonroad equipment used in construction, cargo handling, agriculture, mining, and energy production. Selection favored cost-effective projects that reduce emissions and maximize health benefits.
DNR also directs applicants to the separate EPA-administered DERA National Grants Program, which accelerates upgrades and retirement of aging diesel engines. Wisconsin’s Volkswagen Environmental Mitigation Trust NOx-reduction activities are separate from DNR’s Clean Diesel programs and are led by the Wisconsin Department of Administration.
