16 Tex. Admin. Code § 22.126
During the pendency of its rate proceeding, a utility seeking to implement rates under bond as allowed by PURA § RSA 36.110 or § RSA 53.110 or as allowed by TWC § RSA 13.187 or § RSA 13.1871 shall file the required number of copies of its application for approval of bond at least two weeks prior to the date the bonded rates are to be effective. The application shall conform to the requirements of subchapter E of this chapter (relating to Pleadings). The bond shall be in an amount equal to or greater than one-sixth of the annual difference between the utility's current rates and the bonded rates. The bond must be approved by the Commission Advising and Docket Management Division as to sufficiency based on the commission staff's review of the utility's application. Any decision by the Commission Advising and Docket Management Division either approving or disapproving a bond is appealable to the commission under § RSA 22.123 of this title (relating to Appeal of an Interim Order and Motions for Reconsideration of Interim Order Issued by the Commission).
16 Tex. Admin. Code § 22.126