Texas Utilities Code - UTIL § 60.064. Recovery of Cost of Providing Service

(1) each specifically tariffed premium rate for each noncompetitive service or service function, or each element of a noncompetitive service or service function, or the functional equivalent, that is used to provide the service;

(2) the total service long run incremental cost of the competitive services or service functions that are used;

(3) each cost, not reflected in Subdivision (1) or (2), that is specifically associated with providing the service or group of services;  and

(4) each cost or surcharge associated with an explicit subsidy applied to all providers of the service to promote universal service.