CNG Certifications

The Regulations for Compressed Natural Gas require each individual performing regulated activities to be certified through examination. There are two different levels of examination: Management and Employee.

A licensee must employ at least one company representative who has passed the applicable management-level qualifying examination and met all applicable training requirements. Each license category has a corresponding management level exam. A company representative applicant may not perform work or be employed in any capacity requiring contact with CNG before these requirements are met. Management-level examinations are closed book.

No individual may perform work or be employed in any capacity requiring contact with CNG until he or she has passed the required Railroad Commission qualifying examination. Employee-level examinations are open book. The Commission will provide the publications to be used during the exam

Taking an Examination

CNG examinations are offered by appointment only at the Railroad Commission’s Alternative Fuels Training Center, 4044 Promontory Point. Pre-registration is required for all examinations. Please register at least 7 business days before the scheduled examination.  

Online Examinations

Online examinations are proctored by a contracted vendor of the Railroad Commission of Texas. Resources allowed during online exam(s) include the appropriate rulebooks and other documents provided by the RRC in digital format. Notes, study guides or other printed materials are prohibited when taking online exams. A list of available exams

Examination Schedule

Click on this link to view a current schedule of the next three months’ examination dates and locations outside Austin.  If the schedule does not include an examination site near you, please consult future postings for examinations available in your region.

Examination Fees

CNG Management-Level Examination Fee
All categories: $70 per person. This fee is due each time an exam is taken.

CNG Employee-Level Examination Fee
All categories: $40 per person. This fee is due each time an exam is taken.

All Railroad Commission examination and renewal fees are nonrefundable.

Study Guides

CNG Examination Study Guides for these exams are available through this link.

Annual Certification Renewal; Renewal Fees

On or before March 1 each year AFS mails each CNG licensee a renewal notice for the licensee’s certified employees.  Renewal notices are also mailed to certified individuals who are not employed by a licensed company.

The annual fee to renew an individual’s CNG certification is $25, payable by May 31.  Applicants for certification who pass an initial examination between March 1 and May 31 have until May 31 of the following year to renew their certification.

Certified individuals who retire or leave the industry may maintain their CNG certification by paying the $25 annual certification renewal fee. In such cases, please make sure the Railroad Commission knows your current mailing address.

Replacement Railroad Commission certification cards are issued free of charge.

Late Fees

Annual certification renewals paid online or postmarked after May 31 are subject to a nonrefundable $20 late fee.

Transfer Fees

CNG licensees who transfer a currently certified individual to their license are required to submit a CNG Form 1016A, Certified Employee Transfer Form, and pay a nonrefundable $10 transfer fee. 


AFS welcomes your comments about our programs.
Maurie Hebert, Certification Specialist/Education Specialist 
Mark Hood, AFS Training Manager or 
April Richardson, Department Director.