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School Bus Grant Program

Page updated October 25, 2019

The San Luis Obispo County Air Pollution Control District (APCD) AB 923 School Bus Replacement and Retrofit Program is currently closed. A new eligibility list will be established for FY 19-20 funding when the program opens in 2020. 

However, limited school bus funding is currently available through our AB 617 Community Air Protection Program.  This program prioritizes funding for zero-emission technologies in low-income areas of our county.  For more information, click here.


  • Old buses with engines of any model year may be eligible for replacement.
  • Buses powered by optional low-NOx (CNG or propane) engines are eligible for additional funding up to $200,000. 
  • Zero-emission (all electric) buses are eligible for additional funding which could potentially cover up to 100% of the cost of the bus. The state’s HVIP program funding can no longer be combined with other state funds, so HVIP funding opportunities may be limited. For more information on the HVIP program, click here, or contact your new school bus dealer. 

In addition to school bus replacements, the program will provide funding for the following:

  • The purchase and installation of an ARB-verified level 3 diesel emission control system on public school buses equipped with 1987 or newer engines.
  • The replacement of on-board compressed natural gas tanks on public school buses which are near the end of their service life.
  • Alternative fuel infrastructure to facilitate fueling of a new alternative fuel school bus.
  • Refueling infrastructure maintenance

For more information, see the Request for Proposals, or contact Vince Kirkhuff at 805-781-4247 or vkirkhuff@co.slo.ca.us with any questions regarding this program.