Tex. Util. Code § 41.005

Notwithstanding any other provision of this title, a municipality may not directly or indirectly regulate the rates, operations, and services of an electric cooperative, except, with respect to operations, to the extent necessary to protect the public health, safety, or welfare. This section does not prohibit a municipality from making a lawful charge for the use of public rights-of-way within the municipality as provided by Section 182.025, Tax Code, and Section 33.008. An electric cooperative shall be an electric utility for purposes of Section 182.025, Tax Code, and Section 33.008.