we are no longer accepting applications under the 2018 program. To sign up for info on our 2019 Clean Air Grants program, please email us at [email protected].

2018 Clean Air Grants for Marine Diesel Engines

Upgrade or replace diesel-powered marine engines to help reduce air pollution. The maximum grant fund shall not exceed $150,000 per project or 80% of the eligible cost reimbursement, whichever is less. Grant funds will be available on a first-come, first-served basis until all funding sources are distributed.

Eligible Vessels:

  • Non-regulated commercial marine vessels, such as charter fishing, commercial fishing, pilot, work, and research.
  • Regulated commercial marine vessels, such as barges, crew & supply, dredges, tugboats, and towboats that comply with the CARB Commercial Harbor Craft Regulation.
  • Recreational and non-diesel vessels are NOT eligible for funding.

Project Requirements:

  • Applicants are limited to one marine engine project per company.
  • Vessels must operate 100% of the time in coastal waters of Santa Barbara, San Luis Obispo, and/or Ventura counties.
  • 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 previous two consecutive years.
  • Existing engine(s) proposed for repower must be demonstrated to the District to be operable and in-service at the time of application.

How to Apply:

  1. Determine your vessel’s eligibility for this program. Please see CARB’s 2017 Carl Moyer Guidelines, Chapter 7 and the project criteria and requirements page for full details. 
  2. Gather the required information about your marine vessel, engine(s), and replacement engine(s).
  3. Apply for funding in person, by mail, or online.

Please see application on the right for more information.


Apply starting September 18, 2018


This program is part of our 2018 Clean Air Grants Program funded by California Air Resources Board’s Carl Moyer Program, Community Air Protection Program, Funding Agricultural Replacement Measures for Emission Reductions (FARMER) Program, Voluntary NOx Remediation Measure Program, and California Department of Motor Vehicles surcharge revenue For more information, see 2018 Clean Air Grants.