(a) If the commission finds the protested rate adversely affects the public interest and sets rates on a cost of service basis, then the commission shall add the following provisions to its order:
  (1) If the purchaser files a new petition or appeal, and the commission forwards the petition or appeal to the State Office of Administrative Hearings pursuant to §24.307 of this title (relating to Commission's Review of Petition or Appeal), then the administrative law judge shall set an interim rate immediately. The interim rate shall equal the rate set by the commission in this proceeding where the commission granted the petition or appeal and set a cost of service rate.
  (2) The commission shall determine in the proceedings pursuant to the new petition or appeal that the protested rate adversely affects the public interest. The administrative law judge shall not hold an evidentiary hearing on public interest but rather shall proceed with the evidentiary hearing to determine a rate consistent with the ratemaking mandates of the TWC, Chapters 12 and 13.
(b) The effective period for the provisions issued pursuant to subsection (a) of this section shall expire upon the earlier of three years after the end of the test year period, or upon the seller and purchaser entering into a new written agreement for the sale of water or sewer service which supersedes the agreement which was the subject of the proceeding where the commission granted the petition or appeal and set a cost of service rate. The provisions shall be effective in proceedings pursuant to a new petition or appeal if the petition or appeal is filed before the date of expiration.
(c) For purposes of subsection (b) of this section, the "test year period" is the test year used by the commission in the proceeding where the commission granted the petition or appeal and set rates on a cost of service basis.

Source Note: The provisions of this §24.319 adopted to be effective October 17, 2018, 43 TexReg 6826