Clean-Air Vehicles at a Fraction of the Price

The medium and heavy-duty vehicle market is transforming.
By slashing purchase costs, HVIP helps you be part of this future. You see the discount immediately at the point of sale In most cases, there’s no scrappage required and funds are first come, first served. Dealers learn the voucher processing system, so there’s less paperwork for you.

How to Participate

Get in on base vehicle price breaks from $20,000 to $240,000, depending on the vehicle you purchase. Whether you operate one vehicle or hundreds, HVIP dealers are ready to work with you. Individual owner-operators, small businesses, corporate leaders, school districts, and municipal fleets are all eligible. See participation details below for each category, and see the Funding Updates for a daily summary of remaining funds.

FY21-22 Public School Bus Set-Aside Funding Table

Voucher amounts in the FY21-22 Public School Bus Set-Aside for Small and Medium Air Districts (Public School Bus Set-Aside) intend to cover nearly, if not all, the full cost of a new zero-emission school bus. Below are the maximum incentive amounts for each bus type.

School Bus Type

Voucher Amount*

Type A (with or without a wheelchair lift) $350,000
Type C & D without a wheelchair lift $375,000
Type C & D with a
wheelchair lift

*Vouchers for the Public School Bus Set-Aside are intended to eliminate the cost barrier of adopting zero-emission school buses.

How Much Money
is Available per Vehicle?

Where to Find Incentive Amounts

The Vehicle Catalog lets you know the incentive amount for each vehicle. The Catalog only publishes the incentive amount per vehicle; the total cost of the vehicle will be determined between you and your dealer and noted in your Purchase Order. Also, Funding Tables are published in each edition of the Implementation Manual to further explain the amounts available for each specific technology and vehicle type.

Community Specific Incentive

The new Disadvantaged Communities (DAC) incentive is 15% and is available only for vehicles domiciled in a disadvantaged community that are purchased or leased by a public or private small fleet with 10 or fewer trucks or buses, and less than $50 million in annual revenue for private fleets. There is no revenue cap for public entities. The increased voucher enhancement is also available for ANY purchase or lease by a California Native American tribal government.

Get started by finding
the right vehicle for you

Purchaser Resources

Funding tools

Your Options

Our Total Cost of Ownership Estimator helps purchasers assess the costs of near- and zero-emission options compared to similar conventionally-fueled vehicles. Enter details about your fleet, duty cycle, and financial information, or use pre-set data to see an estimated payback period and itemized costs over the service life of both vehicles. Also, check out the Zero-Emission Technology Inventory (ZETI) tool to compare the specs between different zero-emission vehicles out now on the market!


Need Other

The Funding Finder Tool helps you navigate funding options beyond HVIP that support clean vehicles and the infrastructure to help you deploy them.

Find application instructions and contact information from state agencies, air districts, and major utilities – all in one place.


I would like to purchase an HVIP-eligible vehicle; how do I apply for a voucher?

Fleets / purchasers do not apply for HVIP vouchers directly. HVIP-eligible dealers are responsible for securing HVIP voucher funding through the online Voucher Processing Center. A purchaser should connect with an HVIP-approved dealer to acquire their vehicle and the dealer will take it from there to acquire the voucher. If you have a trusted dealer relationship or already have a vehicle in mind, connect us with your dealer and we can help them become HVIP-eligible.

If you are a school district in a small- or medium-sized air district, the application window for the Public School Bus Set-Aside is now closed. See the section on school bus set-aside funds on the page for more details and contact [email protected] Funding may remain available through standard HVIP for those who missed the Public School Bus Set-Aside application window or did not qualify for funding through the Set-Aside.  Please visit the HVIP Funding page for daily updates on HVIP funding availability.

Does the size of the fleet matter?

No, fleet size does not matter. Requirements and eligibility do not differ based on the size of the fleet. CARB is considering fleet size limits for 2023. Please see Events tab of this website for public engagement opportunities in advance of policy changes by CARB.

Can I apply for more than one voucher?

Yes. Fleets may request up to 30 vouchers per calendar year. The cap for drayage fleets is set at 50 voucher requests per year. Requests that are redeemed within the same year they are requested do not count against the cap.

I'm using an HVIP voucher to replace a vehicle; what happens to my old vehicle?

HVIP does not require scrappage of an old vehicle except for the Public School Bus Set Aside for Small and Medium Air Districts and does not have any requirements about what happens to replaced vehicles. For more information about truck replacement, visit CARB’s One Stop Truck site.

What vehicles are HVIP Eligible and how much do they cost?

HVIP eligible vehicles can be found in our Eligible Catalog. You can filter and search by vehicle type, manufacturer, vehicle size, and more. Incentive amounts per vehicle are the discount that a purchaser would receive. To know what the TOTAL price of the vehicle will be, contact one of our approved dealers. Our approved dealers will work out a price with you and then on your purchase order, there will be the HVIP incentive amount subtracted from the price that was negotiated.

What is the total cost of the vehicle I want to purchase?

The HVIP vehicle catalog only publishes the incentive amount per vehicle; the total cost of the vehicle will be determined between you and your dealer and noted in your Purchase Order.

What is the Hybrid and Zero-Emission Truck and Bus Voucher Incentive Project (HVIP) and Low NOx Engine Incentives?

HVIP was created to reduce price barriers, enabling fleets to adopt more clean heavy-duty commercial vehicles. Created by the California Air Resources Board (CARB) in 2009, HVIP provides point-of-sale discount vouchers that reduce the purchase cost of vehicles operated in the State of California. HVIP vouchers make zero-emission and Low NOx buses and trucks as affordable as their traditional fossil-fueled counterparts at point of sale and reduce prices for medium- and heavy-duty hybrid vehicles. Funded vehicles include parcel, beverage, and food-distribution trucks, transit buses, shuttle buses, and more.

Why did CARB create HVIP?

The goal of HVIP is to accelerate and facilitate the adoption of low-emitting hybrid, low NOx, and zero-emission trucks and buses. These vehicles are relatively new technologies and are therefore more expensive than traditional vehicles, especially in the early market years when production volumes are low. CARB recognizes that these vehicles have the proven ability to reduce criteria and greenhouse gas (GHG) pollutants in California and aims to accelerate the penetration of these cleaner vehicles to help meet state clean air regulations and climate change goals. HVIP is part of the California Climate Investments, a statewide initiative that invests Cap and Trade dollars.

What does first-come, first-served mean?

For standard HVIP and the drayage and transit set-asides, vouchers are awarded on a first-come, first-served basis unless a randomization process is needed if funds are subscribed within the first 24 hours that HVIP is open only.

The Innovative Small E-Fleets project and Public School Bus Set-Aside for Small and Medium Air Districts have different rules; please contact [email protected] and [email protected] respectively.

Funding status is confirmed shortly after submission with no uncertainty regarding securing funding, and no lengthy application or bid process. HVIP is a streamlined funding mechanism that is set up for ease of use by end-users. Dealers, not purchasers, are responsible for securing HVIP funding – fleet owners do not need to gain an understanding of the voucher process to receive the full benefits of HVIP funding. A list of participating dealers can be found in the HVIP Eligible Vehicles Catalog.

How can I be notified of HVIP news and events?

Sign up for the California HVIP e-mail list by filling out the form: Contact Us.

Who can I contact for more information?

Please email [email protected] or call the HVIP toll-free hotline at 888-457-HVIP.

How do we know how much money is available?

After the first 24 hours of HVIP opening, the ticker on the website lists how much money has been requested. This reflects the funds based on the vouchers requested to-date as long as funds remain. All voucher participants will be notified of which funding pots are open through the website, email, and VPC notifications.

How do I know if a vehicle is eligible for HVIP?

All HVIP-eligible vehicles can be found in the clean vehicle catalog. If you think a vehicle is eligible, but do not see it listed, please send an email to [email protected].

How much are the vouchers worth?

CARB recognizes that battery size is the largest determinant of battery-electric vehicle cost, therefore HVIP has simplified the voucher tables to one single voucher table based on vehicle weight rating. The incentive amounts are accompanied by voucher modifiers to support unique fleets (public transit and school districts) as well as costlier vehicle bodies. 

Can HVIP voucher funding be combined with other funding (grants, incentives, etc.)?

Yes, however the ability to combine funding sources may be considered on a case-by-case basis. Please contact [email protected] for more information.

Generally, local and federal funds can be stacked with HVIP, while stacking HVIP with state-funded incentives is NOT permitted, except for public transit buses. This includes stacking with other California Climate Investment programs.

For public transit buses, HVIP will fund the remaining cost up to the maximum voucher amount after the other incentives have been applied at their maximum allowable amounts.

The total voucher amount (base incentive plus voucher enhancements), plus all other eligible public incentives, may not exceed 90 percent of the total vehicle cost for purchases by private entities, and 100% for purchases by public entities.

Are light-duty vehicles eligible for HVIP?

No, they are not. The Clean Vehicle Rebate Project provides incentives for the purchase or lease of new, eligible zero-emission vehicles, including electric, plug-in hybrid electric, and fuel cell vehicles.

What is a Disadvantaged Community (DAC)? How can I determine eligibility for a DAC “Plus Up”?

A DAC is a Census-designated area that is especially vulnerable to the impacts of climate change because of socioeconomic and geographic factors. HVIP provides increased incentives for fleets domiciled within disadvantaged communities. The value of this “plus up” varies by vehicle type and increases for larger vehicles, and there are other requirements as listed in the “Community Specific Incentive” space on ths page. To determine if a vehicle qualifies for a DAC “Plus Up” (increased funding), enter the domicile address in the address search bar and look at the pink and pink/blue sections, on this website. 

Where can I learn about HVIP policy changes for FY 2021-22?

Answers to frequently asked questions for Fiscal Year 2021-22 can be found in the FY21-22 Implementation FAQs.

When and where can applicants apply for the Public School Bus Set-Aside?

For FY21-22, the Public School Bus Set-Aside opened for applications on March 30, 2022, at 10:00 a.m. pacific and closed on June 28, 2022, at 5:00 p.m. pacific. Funding for school bus purchases may still be available through standard HVIP. Please visit the HVIP Funding page for daily updates on HVIP funding availability

Who completes Application Part A for the Public School Bus Set-Aside?

The Public School Bus Set-Aside requires that the applicant/purchaser complete the initial application (Application Part A).  Once an application is approved to move on to Application Part B, the applicant’s chosen, HVIP approved dealer will be responsible for submitting Application Part B.   

Where can I find the eligible vehicles for the Public School Bus Set-Aside? 

You can find all the eligible vehicles for the Public School Bus Set-Aside at Vehicles eligible for the Public School Bus Set-Aside will be depicted with a blue Set-Aside label.  

How do I know if I’m in a Disadvantage Community (DAC)? 

A predetermined list of school districts that meet the Disadvantaged Community priority criteria of the Public School Set-Aside can be found here: PSB-Set-Aside-DAC-Qualifying-School-Districts-220324.pdf ( list was created by CALSTART to help identify school districts that meet DAC priority criteria of the Public School Bus Set-Aside. 

What does the Letter of Intent need to say and who needs to sign it?

A Letter of Intent is required to submit Application Part A.  A sample Letter of Intent can be found here: Letter of Intent ( Letter of Intent must be signed by an authorized applicant representative and state the applicant’s intent to participate.   

What are the requirements for the old bus(es) that must be scrapped?

The old school bus can be any internal combustion engine using any fuel type. The following are the old bus eligibility requirements (G-3):  

  • The bus chassis must be a 2007 model or older. The bus chassis age is verified by the model year listed on the DMV Registration Form.  
  • The bus must be applicant owned. The bus cannot have a lienholder listed on the DMV Registration Form.  
  • The bus must have a Gross Vehicle Weight Rating (GVWR) greater than 14,000 pounds  
  • The bus must have a current California Highway Patrol Safety Certification (CHP 292 or equivalent)  
  • The bus must be compliant with the California Truck and Bus Regulation in order to receive a full voucher amount  
Is there funding available for charging infrastructure? 

The Public School Bus Set-Aside only funds zero emission school buses. Funding for charging infrastructure is available through CALSTART’s EnergIIZE project.  Check out the EnergIIZE website at 

Still have questions?

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Important updates and notifications
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