Clean Air Funds

Yolo-Solano AQMD’s Clean Air Funds Program offers grants for projects designed to reduce emissions from mobile sources. Private businesses, non-profit organizations and public agencies are eligible for Clean Air Funds. For the 2023 Clean Air Funds Grant program there is $476,725 available for projects in the District. The 2023-2024 Clean Air Funds Program Cycle application period has closed, look for the next cycle to open Spring 2024.

2023 Clean Air Funds Program
The Yolo-Solano Air Quality Management District Clean Air Funds Program provides financial incentives for local projects that reduce emissions from mobile sources of air pollution within the District.

Funding is available at various levels for projects in four qualifying categories: Clean Vehicle Technology, Alternative Transportation, Transit Services, and Public Education.  Applications are open to private companies, government agencies, and other entities to promote clean transportation and reduced vehicle emissions. The 2023 CAF Application Period has closed.

Monday, March 13, 2023 Application period opens.
Thursday, March 23, 2023, 10:00 a.m. Clean Air Fund Program Virtual Workshop and Q&A – Watch the Workshop Replay
Friday, May 5, 2023, 4:00 p.m. Deadline to submit completed application.
May 10, 2023, 10:30 a.m. – 11:30 a.m.

1947 Galileo Court, Suite 103
Davis, CA 95618
Yolo Clean Air Funds Committee Meeting to review applications, receive presentations by applicants, and determine funding recommendations. Applicants are requested to attend and provide a short presentation of the project proposal.
June 5, 2023, 9:00 a.m. – 10:30 a.m.

Solano Transportation Authority
423 Main Street, Suisun City, CA 94585
Solano Clean Air Funds Committee Meeting to review applications, receive presentations by applicants, and determine funding recommendations. Applicants are requested to attend and provide a short presentation of the project proposal.
June 14, 2023 Board of Directors will approve 2023 Clean Air Fund grants.
June 15 – July 1, 2023 Notification of fund award and contract execution.
July 1, 2023 – May 1, 2024 Project implementation and grant funds distributed.

Projects that have been awarded Clean Air Funds include:

  • Replacing or retrofitting diesel trucks and off-road equipment that do not qualify for other regional programs
  • New electric or alternative fuel vehicles
  • Design and construction of pedestrian and bicycle facilities
  • Transit projects
  • Public information and education programs

For the 2023-2024 Grant Cycle a total of $517,725 in funding was awarded for 12 projects in the District. $107,725 was awarded for projects within Yolo County, and $410,000 awarded for projects in northeastern Solano County including the cities of Dixon, Rio Vista and Vacaville.

The following projects were awarded funding for the 2023/2024 grant cycle:
Clean Technologies/Low-Emission Vehicles
     • Driving on Sunshine: Solano EV Charger System (City of Vacaville)
     • Zero-Emission Patrol Motorcycle Purchase (Winters Police Department)
Alternative Transportation
     • McCormack Road Phase 2 (Solano County)
     • Sidewalk Extension on River Road to Front Street (City of Rio Vista)
     • Eastern Solano County Alternative Transportation Incentive Program (Solano     
       Transportation Authority)
     • City Bike Racks and Signage (City of Winters)
     • Davis Train Station Relocation of Bicycle Lockers to Increase Usage (City of Davis)
     • Electric-Assist Bicycle Lease/Lease-to-Own Program (Yolo Commute)
     • Woodland Bike Loop/Planning and Signage (City of Woodland)
Public Education/Information
    • Bike City Theatre’s Good Earth Yolo-Solano Regional Tour 2023/2024 (Bike City Theatre
    • Bike Fleet for Woodland Schools Bike Skills Training Program (The Bike Campaign)
    • 3rd Annual Breathe Bike Rodeo (Breathe California-Sacramento Region)


AB 2766, chaptered in 1990, allows air districts to collect $4 on each annual vehicle registration within their borders, one potential use of these funds is to reduce emissions caused by mobile sources. Yolo-Solano AQMD uses a portion of this revenue for the Clean Air Funds, which seeks to enhance the power of each dollar by directing money to the most cost-effective, impactful projects.

Through separate legislation, the air district also receives AB 8 property tax revenue s in the northeastern portion of Solano County. The District uses a portion of these funds in the Clean Air Fund program in Solano County.  Funding levels for the Clean Air Funds program can change each year.

Proposals can be made in one of four categories: clean technologies and low-emission vehicles; alternative transportation; transit; and public education. Yolo-Solano AQMD staff evaluates project proposals based on a number of criteria and makes recommendations to two Board committees: the Yolo Clean Air Funds Committee and the Solano Clean Air Funds Committee. Each committee makes funding recommendations to the full Board, with a final Board vote typically taking place in June. Funds are then allocated for the following fiscal year.

Applicants awarded Clean Air Funds are required to submit a progress report every 6 months of during implementation and a final report to the District one year after project completion.

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