Becoming a Qualified Third-Party Supplier

Please review the information below on how to become a Qualified Third-party Supplier for customers of Texas Gas Service.

  • Identify your potential customers.
  • Review the Texas Gas Service Standard Transportation Rate Schedules by Service Area; prepare cost-saving analysis worksheets for your potential customers.
  • Send an email to request preparation of the Supplier Service Agreement along with your legal business/entity name, tax ID number, and applicable contact information for notices and invoices.
  • Be prepared to submit a current financial statement and current balance sheet; the ONE Gas corporate office will review and determine if any type of credit enhancement may be required.
  • A minimum of thirty days is needed to complete the execution process of a Texas Gas Service Supplier Service Agreement.
  • Make sure your customers have a fully executed transportation agreement in effect with Texas Gas Service.


To report a natural gas odor or emergency, leave the area immediately and then call 911 and 800-959-5325.