Tex. Utilities Code § 121.104: DISCRIMINATION IN SERVICE AND CHARGES PROHIBITED.

(a) A pipeline gas utility may not:

(1) discriminate in favor of or against any person or place in:

(A) apportioning the supply of natural gas; or

(B) charging for natural gas; or

(2) directly or indirectly charge, demand, collect, or receive from anyone a greater or lesser compensation for a service provided than the compensation charged, demanded, or received from another for a similar and contemporaneous service.

(b) This section does not limit the right of the railroad commission to prescribe:

(1) different rates and rules for the use of natural gas for manufacturing and similar purposes; or

(2) rates and rules for service from or to other or different places.

Acts 1997, 75th Leg., ch. 166, Sec. 1, eff. Sept. 1, 1997.