Clean Air Grants for Marine Engines

The 2023 Clean Air Grants Program has closed. Please contact [email protected] to be added to the email notification list to stay updated about future grant programs. 

2023 Clean Air Grants for Marine Diesel Engines

Si requiere asistencia para someter una solicitud en español, comuníquese con el Distrito al [email protected]

Upgrade or replace diesel-powered marine engines to help reduce air pollution. Successful projects will be eligible to receive a grant within a range from $10,000 to $250,000.

  • Priority will be given to zero-emission or near-zero emission technology projects, along with projects located within low-income and disadvantaged communities, as defined by this map:
  • The District has discretion on how grant funds are distributed.

Eligible Vessels:

  • Funding opportunities may be limited for vessels subject to the Commercial Harbor Craft Regulation including: Commercial passenger fishing vessels, Commercial fishing vessels, Pilot vessels, Barges, Dredge vessels, Work boats, Research vessels, Ferries, Excursion vessels, Tug boats, Tow boats, Push boats, Crew boats, and Supply boats.
  • Recreational and non-diesel vessels are NOT eligible for grant funds.

Project Requirements:

  • Applications are limited to one grant project per Company, LLC, Taxpayer ID, etc. with final determination at the District’s discretion.
  • Vessels must be based in Santa Barbara County. 
  • Vessels must operate 50% of the time in coastal waters of Santa Barbara, San Luis Obispo, and/or Ventura counties with the remainder in California coastal waters.
  • Vessels are required to maintain a functioning hour meter as required by the CARB Commercial Harbor Craft Regulation.
  • New engine(s) must be installed and operational at least three years prior to the compliance deadline specified by the CARB Commercial Harbor Craft Regulation.
  • Applicants must provide records documenting equipment ownership and usage from the last 24 months.
  • Existing engine(s) proposed for repower must be demonstrated to the District to be operational and in-service at the time of application.
  • Existing engine(s) must be equal to or greater than 25 horsepower.

How to Apply:

  1. Determine your vessel’s eligibility for this program. Please see CARB’s 2017 Carl Moyer Guidelines, Chapter 7, and Community Air Projection Project Guidelines for full details. 
  2. Gather the required information about your marine vessel, engine(s), and replacement engine(s).
  3. Apply for grant funds in person, by mail, or email.

Please see application on the right for more information.



Program opened Monday, July 24, 2023.
Program closed Friday, September 1, 2023.


Contact us via email at [email protected]

This program is part of our 2023 Clean Air Grants Program funded by California Air Resources Board’s Carl Moyer Program, Community Air Protection Program, and Funding Agricultural Replacement Measures for Emission Reductions (FARMER) Program. For more information, see 2023 Clean Air Grants.