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Governmental Alternative Fuel Fleet Grant Program (GAFF)

Provides grants to purchase or lease new vehicles that operate primarily on compressed natural gas, liquified natural gas, liquified petroleum gas (propane), hydrogen fuel cells, or electricity.

A Program of the Texas Emissions Reduction Plan (TERP)

Currently Closed

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How to Apply

Review the following documents before completing and submitting the Application Form (provided in Step 3):

Eligible Applicants

State agencies, counties, municipalities, school districts, junior college districts, river authorities, water or other special districts, or other political subdivisions that operate a fleet of more than 15 motor vehicles.

Eligible Projects

TCEQ will award GAFF grants on a competitive basis to purchase or lease new on-road vehicles that operate using the following alternative fuels:

  • compressed natural gas
  • liquified natural gas
  • liquified petroleum gas (propane)
  • hydrogen fuel cells
  • electricity

Up to 10% of awarded funds may be granted for the purchase, lease, or installation of refueling infrastructure or equipment, or refueling services in conjunction with an eligible vehicle purchase or lease.

Eligible Areas

Grants will be made available statewide, but priority will be given to projects in or near a Nonattainment Area or in an Affected County. See the RFGA for a list of the Nonattainment Areas and Affected Counties.

TCEQ has established pre-determined grant amounts for the purchase or lease of new motor vehicles. Grant amounts per vehicle are provided below by vehicle class:

  • Class 1 vehicles: $17,000
  • Class 2-3 vehicles: $23,000
  • Class 4-6 vehicles: $40,000
  • Class 7-8 vehicles: $80,000

There are two options to complete your application:

Option 1

Complete your application electronically via Single-Use Non-CROMERR Submission System (SUNSS):

Option 2

***Note: Forms below are for reference only. Program is closed.***

Complete an application using the fillable PDF below:

TCEQ requires applicants to complete the W-9 to certify their taxpayer identification number (TIN). The W-9 Form must be submitted with the Application Forms.

The following items must be completed in full to be considered for eligibility:

  • Project Application
  • W-9

Applications and Required Attachments must be received by 5:00 p.m. CT, May 16, 2023.

Applications will be accepted for consideration during this grant period only if received by TCEQ via SUNSS, email at, or via mail at one of TCEQ’s addresses below, no later than 5:00 p.m. CT on the application submission deadline listed on the cover page of the RFGA.

  • Submitting applications via TERP Online. Applications may be submitted through SUNSS.
  • Submitting Applications via Email. If submitting an application via email to, please use the following naming convention for your application file in the subject line: ‘FY23 GAFF and [applicant legal name]’. Only one application may be submitted per email at a maximum file size of 25MB.
  • Submitting Applications via TCEQ’s FTPS Server. If your application is larger than 25MB, please submit by uploading the file to TCEQ’s file transfer protocol secure (FTPS) server. Enter as the email address. (Read how to use TCEQ’s FTPS server). Please note: Applications uploaded to TCEQ’s FTPS server without completing the share file(s) step will not be considered as submitted. See detailed instructions on how to share files via TCEQ’s FTPS server.

Applications may also be submitted to one of these addresses:

Regular Post Delivery
Texas Commission on Environmental Quality
Air Grants Division
GAFF, MC-204
P.O. Box 13087
Austin, TX 78711-3087

Express Delivery
Texas Commission on Environmental Quality
Air Grants Division
GAFF, MC-204
12100 Park 35 Circle
Building F, 1st Floor, Room 1301
Austin, TX 78753

For questions on obtaining the RFGA and GAFF Example Contract, determining the eligibility of a project, or completing and submitting an application, please contact us to discuss.