(a) The commission may, on a motion by the commission staff or by the appellant under TWC, §13.043(a), (b), or (f), as amended, establish interim rates to remain in effect until a final decision is made.
(b) At any time after the filing of a statement of intent to change rates under Chapter 13 of the TWC the commission staff may petition the commission to set interim rates to remain in effect until further commission action or a final rate determination is made. After a hearing is convened, any party may petition the judge or commission to set interim rates.
(c) At any time during the proceeding, the commission may, for good cause, require the utility to refund money collected under a proposed rate before the rate was suspended or an interim rate was established to the extent the proposed rate exceeds the existing rate or the interim rate.
(d) Interim rates may be established by the commission in those cases under the commission's original or appellate jurisdiction where the proposed increase in rates could result in an unreasonable economic hardship on the utility's customers, unjust or unreasonable rates, or failure to set interim rates could result in an unreasonable economic hardship on the utility.
(e) In making a determination under subsection (d) of this section, the commission may limit its consideration of the matter to oral arguments of the affected parties and may:
  (1) set interim rates not lower than the authorized rates prior to the proposed increase nor higher than the requested rates;
  (2) deny interim rate relief; and
  (3) require that all or part of the requested rate increase be deposited in an escrow account in accordance with §24.39 of this title (relating to Escrow of Proceeds Received under Rate Increase).
(f) The commission may also remand the request for interim rates to the State Office of Administrative Hearings for an evidentiary hearing on interim rates. The presiding officer shall issue a non-appealable interlocutory ruling setting interim rates to remain in effect until a final rate determination is made by the commission.
(g) The establishment of interim rates does not preclude the commission from establishing, as a final rate, a different rate from the interim rate.
(h) Unless otherwise agreed to by the parties to the rate proceeding, the retail public utility shall refund or credit against future bills all sums collected in excess of the rate finally ordered plus interest as determined by the commission in a reasonable number of monthly installments.
(i) Unless otherwise agreed to by the parties to the rate proceeding, the retail public utility shall be authorized by the commission to collect the difference, in a reasonable number of monthly installments, from its customers for the amounts by which the rate finally ordered exceeds the interim rates.
(j) The retail public utility shall provide a notice to its customers including the interim rates set by the commission or presiding officer with the first billing at the interim rates with the following wording: "The commission (or presiding officer) has established the following interim rates to be in effect until the final decision on the requested rate change (appeal) or until another interim rate is established."

Source Note: The provisions of this §24.37 adopted to be effective October 17, 2018, 43 TexReg 6826