Tex. Nat. Res. Code § 111.301

A person that is a common carrier under Subsection (5), Section 111.002 of this code must apply for and be issued a certificate of public convenience and necessity from the commission pursuant to the commission's authority to issue certificates under Section 111.302 of this code if the commission finds after a hearing that the public convenience and necessity will be served by the construction and operation of the pipeline.