CARB’s heavy-duty vehicle legacy programs have been focused on reducing combustion emissions. New heavy-duty zero-emission vehicle programs are complementary to these programs and focus on the long-term goal of reducing emissions in the heavy-duty transportation sector. They are part of California’s holistic plan to address challenging mandates and needs for public health protection, and to meet federal air quality standards and climate protection goals.
More about this program
New Funding Availability
The Clean Truck and Bus Voucher Incentive Project (HVIP) is reopening with $125 Million
The California Air Resources Board (CARB) is reopening the Clean Truck and Bus Voucher Incentive Project (HVIP) on December 16, 2025. Starting at 9:00 a.m. HVIP will begin accepting voucher request applications on a first-come first-served basis.
Approximately $95 million will be directed to Standard HVIP ($5 million of these funds will be in a set-aside for public fleets and tribal governments), $25 million to the Public Transit Bus Set-Aside, and $5 million to Innovative Small E-Fleet (ISEF).