Available Voucher Funds
All Approved Technologies
$ -12,398,123
Small Fleet Low NOx NG
$ 0

Approved technologies include Zero Emission, Low NOx, Hybrid, and ePTO

Program Updates

CARB Review Requirement for Large Orders

CARB is implementing a review of large voucher requests to ensure incentives do not exceed incremental cost maximums as specified in the FY18-19 Funding Plan, and to help maximize funding availability within the constraints of annual budgets. Effective June 18, large voucher requests, defined as 100 or more vouchers for the same fleet in a 12-month period, are subject to CARB review and approval before voucher-request approval. CARB may reduce voucher amounts on a case-by-case basis to ensure that incentive amounts are consistent with incremental cost policy defined in the Funding Plan. Fleets and dealerships are encouraged to coordinate with CARB regarding large orders prior to submitting a voucher request.


Updated Requirements for Low NOx Trucks

Requirements have been updated for 8.9L Low NOx natural gas vouchers for refuse collection vehicles, roll-off vehicles, and transfer vehicles. There are also new eligibility requirements for vouchers where Low NOx vehicles replace diesel vehicles.

Click “MORE” below to learn more about the new requirements.

Updated Requirements for Low NOx Refuse Trucks

Purchases of new 8.9L Low NOx natural gas refuse collection and roll-off vehicles that replace existing natural gas vehicles are not eligible for voucher requests.

Purchases of new 8.9L Low NOx natural gas refuse collection and roll-off vehicles that replace existing diesel vehicles are eligible for voucher requests.

Purchases of new 8.9-L Low NOx natural gas transfer vehicles remain eligible, regardless of whether they replace a diesel vehicle or not.

Eligibility requirements for 8.9-L Low NOx vehicles that replace diesel vehicles:

  • The new Low NOx vehicle needs to be domiciled and operated within a 100-mile driving radius of the diesel vehicle it is replacing. If the replacement vehicle is more than 100 miles from the replaced vehicle, but still in the same service territory, the fleet can request an exception with a letter detailing the new vehicle’s service territory.
  • Proof of California vehicle registration, active at time of voucher request, is required for the diesel vehicle that is being replaced. There is no requirement to substantiate that the diesel vehicle has been replaced. Each diesel vehicle can only count once as a replaced vehicle. The fleet shall also identify the domicile location of each replaced diesel vehicle. The replaced diesel vehicle needs to be a collection or roll-off vehicle.

CARB Releases Proposed FY 2018-19 Funding Plan

CARB has posted the Proposed FY 2018-19 Funding Plan. The CARB Board will consider adoption of the Funding Plan at their October 25 board meeting. The proposed changes to HVIP are on PDF pages 73 through 79 of the Proposed Fiscal Year 2018-19 Funding Plan. If approved by the Board, we will update the voucher amounts for eligible HVIP and Low NOx vehicles to reflect the Board-approved changes on October 26.

California Air Resources Board Working Group Scheduled for March 25, 2019

Please mark your calendars for an upcoming California Air Resources Board (CARB) Hybrid and Zero-Emission Truck and Bus Voucher Incentive Project (HVIP) Work Group Meeting for 2019-20 Funding Plan Development to be held on Monday, March 25, 2019.

For those unable to attend in person, conference call capability is available – Dial-In Number: 888-946-3504, Passcode: 2983101. Click here to access to agenda for this event.

Meeting Information:

The meeting will be held at the following date, time, and location:
Date: Monday, March 25, 2019
Time: 10:00 a.m. to 12:00 p.m.
Place: Cal/EPA Headquarters Building
Training Room East
1001 I Street
Sacramento, California 95814

If you have questions regarding the workshop, please contact Mr. Ryan Murano, Air Pollution Specialist, at (916) 322-2383 or by email at ryan.murano@arb.ca.gov.

Implementation Manuals

The Implementation Manual is an important resource for all HVIP participants. It helps clarify the voucher process and eligible technologies, and provides answers to common administrative and policy questions. The Implementation Manual is published annually, and all updates are posted below.

Tools and Documents

Frequently Asked Questions

Program Basics

  1. 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.
  2. 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.
  3. What is unique about HVIP? Vouchers are awarded on a first-come, first-served basis. This means that there is 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 is available here.  HVIP has deployed over 3,900 vehicles since 2009. The program’s success as a powerful tool for rapid deployment has encouraged regional adaptions of the voucher model in other states and on a localized basis, such as within California’s Air Districts.
  4. 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.
  5. Who can I contact for more information? Please email info@californiahvip.org or call the HVIP toll-free hotline at 888-457-HVIP.
  6. How do we know how much money is available? The ticker at the top of the home page lists how much money remains available to be requested. This reflects the real-time funds, based on the vouchers requested to-date.
  7. 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 info@californiahvip.org.
  8. How much are the vouchers worth? Base voucher amounts vary based on vehicle type, powertrain type, and size. For FY18-19, the base voucher amount ranges from $6,000 for a Class 2 Hybrid Truck or a Bus Conversion to $300,000 for a 40 foot or greater Hydrogen Fuel Cell Electric Bus. Please see the FY18-19 Voucher Funding Tables for further information.
  9. 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 info@californiahvip.org for more information.
  10. 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.
  11. What is a Disadvantaged Community (DAC)? How can I determine eligibility for a DAC “Plus Up”? A DAC is an area within California 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. To determine if a vehicle qualifies for a DAC “Plus Up” (increased funding), enter the domicile address in the address search bar on this website.


  1. I would like to purchase an HVIP-eligible vehicle; how do I apply for a voucher? Fleets do not apply for HVIP vouchers. 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.
  2. 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.
  3. Can I apply for more than one voucher? Yes. As of October 2018, there is no limit to the number of vehicle vouchers that a fleet can request in a single program year. However, effective 6/18/19, large voucher requests (defined as 100 or more vouchers for the same fleet in a 12-month period) are subject to CARB review and approval before voucher-request approval.


  1. I represent a dealership. How do I apply for a voucher? Dealers must be HVIP-certified to be able to submit voucher requests on behalf of their customers. Any dealer or manufacturer who sells HVIP-eligible technologies should reach out to  info@californiahvip.org to begin the certification process. Further instructions can be found here.
  2. I was HVIP-certified in a past year; am I still an eligible dealer? A VPC account may be deactivated if a dealer has not logged in for over 365 days. If you believe your VPC login has been deactivated, please reach out to info@californiahvip.org. The program administrators will likely require that you pass the HVIP Dealer Quiz before your eligibility status is updated. If you have questions, please call the HVIP toll-free line at 888-457-HVIP.
  3. I’m having trouble accessing the Voucher Processing Center, what should I do? You should reach out to info@californiahvip.org. A VPC account may be deactivated if a dealer has not logged in for over 365 days. We can help you restore access.
  4. What paperwork is needed throughout the voucher request and redemption processes? To submit a voucher request, an eligible dealer needs only a Purchase Order that makes clear that HVIP funding would be applied. The documents needed for redemption of an HVIP vehicle voucher can be found here.
  5. My co-worker is HVIP eligible, can I use his or her Voucher Processing Center login? No, you cannot. There should be no sharing of VPC logins within a dealership. Multiple individuals at dealerships can become HVIP-certified: this would allow for multiple individuals to sign off on paperwork for the same voucher and would allow for each dealer to submit and track voucher requests on the VPC.
  6. What happens if a vehicle is delivered/titled/paid for ahead of a voucher request being submitted? It is against HVIP policy to provide funding for vehicles that are delivered/paid for ahead of voucher request. If a vehicle is paid for/delivered ahead of voucher request, the vehicle dealer and purchaser can appeal to CARB to allow for an exception. Please contact info@californiahvip.org for more information.
  7.  Can a dealer purchase a demo vehicle using an HVIP voucher? Yes, if a manufacturer or dealer wants to use an HVIP voucher to buy one of their own vehicles for their own use, they can do so for up to two vehicles every 12 months. A written request and written approval is required. Please contact info@californiahvip.org for more information.  


  1. How does a vehicle become HVIP-eligible?  Vehicle eligibility is handled by the California Air Resources Board. Learn more HERE.
  2. Is funding available for retrofitting? Yes, conversions of trucks and buses from internal combustion to hybrid and zero-emission can be funded through HVIP. Please refer to the FY18-19 Voucher Funding Tables. 
  3. Can a manufacturer purchase a demo vehicle using an HVIP voucher? Yes, if a manufacturer or dealer wants to use an HVIP voucher to buy one of their own vehicles for their own use, they can do so for up to two vehicles every 12 months. A written request and written approval is required. Please contact info@californiahvip.org for more information.  

Other California Incentives for Heavy Duty

Carl Moyer Memorial Air Quality Standards Attainment Program

  • In most cases, funds stacking (or “co-funding”) with HVIP is NOT PERMITTED
  • More information is available at https://www.arb.ca.gov/msprog/moyer/moyer.htm
  • Provides grant funding for cleaner-than-required engines and equipment. Local air districts administer these grants and select which projects to fund

Proposition 1B: Goods Movement Emission Reduction Program (GMERP)

San Joaquin Valley Air Pollution Control District (SJVAPCD)

Volkswagen Mitigation Trust

  • Stacking California VW Mitigation Trust funds with HVIP or other CARB funds is not permitted. However, the funds from the Volkswagen Mitigation Trust for Indian Tribe Beneficiaries are considered to be the same as local funds and, therefore may be stacked with HVIP for projects conducted by eligible Designated Tribal Beneficiaries.
  • The California VW Mitigation Trust provides $130 million for zero-emission transit, school, and shuttle buses; $90 million for zero-emission Class 8 freight and port drayage trucks; and $60 million for combustion freight marine.
  • Information is available on the California Air Resource Board’s website

More Questions? Contact Us!

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