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 – Feb. 15, 2024 EXTENDED
(originally 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

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