The commission may inquire into the management and affairs of all utilities and the affiliated interests of those utilities in order to keep itself informed as to the manner and method in which they are conducted and may obtain all information to enable it to perform management audits. The utility and, if applicable, the affiliated interest shall report to the commission on the status of the implementation of the recommendations of the audit and shall file subsequent reports at the times the commission considers appropriate.
16 Tex. Admin. Code § 24.133