HVIP Hits Record Growth as Zero-Emission Truck and Bus Market Expands

California’s Clean Truck and Bus Voucher Incentive Project (HVIP) experiences an unprecedented surge with voucher redemptions soaring 177% from 2023 to 2024, with early 2025 data showing this upward trend continuing as fleet electrification accelerates across California.

The move to sustainable transportation is picking up speed on California’s roads. In February 2025 alone, more than 200 HVIP-funded zero-emission trucks and buses were deployed—with $31+ million in redeemed vouchers.

HVIP provides point-of-sale discounts to make zero-emission vehicles (ZEVs) more affordable and accessible for California fleets and businesses. Over the last 15 years, HVIP has provided $754 million to help 2,000+ participating fleets purchase and place into service more than 10,000 medium- and heavy-duty clean trucks and buses at a lower cost. These vehicles—ranging from delivery vans to school buses to freight trucks—have logged over 340 million cleaner-air miles, significantly slashing carbon emissions across the state.

Momentum is building as HVIP promotes accessibility and affordability for California public agencies and small businesses, which make up approximately 81% of ZEV orders. To help meet market demand, 6,000 HVIP-funded ZEVs are currently ordered and in production. In 2024, school buses were the most requested vehicle, followed by vans and straight trucks.

The pace of adoption is faster than ever. HVIP continues to expand its portfolio by adding more manufacturers, dealers, and 150+ state-of-the-art vehicles while driving widespread zero-emission fleet adoption. CALSTART’s latest Zeroing in on Zero-Emission Trucks report and Zeroing in on Zero-Emission Buses report show more than 6,000 zero-emission truck deployments (roughly 15% of nationwide deployments) and more than 2,200 full-size zero-emission transit bus adoptions (roughly 31% of nationwide adoptions) in California as of mid-2024, establishing the state as a clean transportation hub.

“It’s exciting to see significant growth across HVIP this past year through increased zero-emission truck and bus deployments,” said Tom Brotherton, Senior Director, HVIP and CORE, CALSTART. “This rising demand confirms our continued progress toward zero-emission transportation and our sustained investment in making it more accessible. We remain committed to expanding zero-emission technology for diverse fleets in order to reduce carbon emissions and drive innovation across California.”

With demand at an all-time high, several HVIP funding categories have reached capacity, but qualifying fleets can still access funding through the transit set-aside and Innovative Small e-Fleets (ISEF) program, a dedicated set-aside for small fleets with fewer than 20 trucks and less than $15 million in revenue. Eligible fleets are encouraged to find a dealer and apply while funds remain available.

To explore funding opportunities and vehicle options, visit californiahvip.org/funding, or sign up to stay informed about HVIP funding alerts and program updates.

HVIP is administered by CALSTART on behalf of the California Air Resources Board.