Clean diesel grants
Transportation is the largest source of climate pollution in Washington, accounting for nearly half of total greenhouse gas emissions. Diesel exhaust is responsible for 70 percent of Washington’s airborne cancer risk. The Governor and Legislature are leading policies and initiatives to reduce impacts from climate change and improve public health by accelerating the transition from fossil fuels to a zero emission transportation system. Clean diesel grants will reduce greenhouse gases and protect people from toxic diesel emissions. This grant's primary purpose is to electrify school buses. It also supports idle reduction and other diesel equipment engine replacements.
Funding cycle
- Amount of funding available: Varies – see individual grant guidelines for eligibility
- Grant award limit: Varies – see individual grant guidelines for eligibility
- Amount of matching funds required: Varies – see individual grant guidelines for eligibility
Applications are currently being accepted.
| Project | Application materials | Application/information due date | Award notifications |
|---|---|---|---|
| Air Quality Clean School Bus Grant Program 2023 – 2025 | Grant guidelines Application instructions Presentation |
Nov. 16, 2023 – Jan. 25, 2024 |
First quarter 2024 |
| Air Quality Clean Diesel Grant Program 2023 – 2025: Fuel cell transit buses and zero emission yard trucks | Grant guidelines Application instructions |
Dec. 6, 2023 – Feb. 27, 2024 |
First quarter 2024 |
Funding is available for the following entities:
Air Quality Clean School Bus Grant Program 2023 – 2025
- School bus owners that transport students to K-12 schools overseen by the Washington Office of Superintendent of Public Instruction (OSPI) for the 2023–2024 school year
Air Quality Clean Diesel Grant Program 2023 – 2025
- Cities, counties, public utility districts/co-ops, ports, transit authorities, school districts, state government, tribes, nonprofit organizations, tribes, and local clean air agencies
Air Quality Clean School Bus Grant Program 2023 — 2025
- Scrap and replace diesel school buses with zero emission school buses.
Air Quality Clean Diesel Grant Program 2023 — 2025
- Scrap and replace diesel yard trucks with zero emission yard trucks
- Scrap and replace diesel transit buses with zero emission transit buses
- Replace the oldest diesel marine engines with all-electric or hybrid electric system
- Vocational training pilot programs to prepare students for jobs created by transforming diesel fleets to zero emission fleets
More information about this funding program
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