Tex. Utilities Code § 39.456

A municipality, with the agreement of an electric utility, may accelerate the expiration date of a franchise agreement that was in existence on September 1, 1999. Any new franchise agreement must be approved by the governing body of the municipality. To the extent that a new franchise agreement would result in an increase in the payment of franchise fees to the municipality, and subject to the terms of the franchise agreement, either the electric utility or the municipality, without the need for a rate proceeding under Chapter 36, may file with the commission for approval of a rider for the electric utility's recovery of franchise payments resulting from the agreement, so long as such rider is collected only from customers of the electric utility that are located within the boundaries of the municipality.