Texas Utilities Code - UTIL § 55.002. Commission Authority Concerning Standards

(1) adopt just and reasonable standards, classifications, rules, or practices a public utility must follow in furnishing a service;

(2) adopt adequate and reasonable standards for measuring a condition, including quantity and quality, relating to the furnishing of a service;

(3) adopt reasonable rules for examining, testing, and measuring a service; and

(4) adopt or approve reasonable rules, specifications, and standards to ensure the accuracy of equipment, including meters and instruments, used to measure a service.