Section 53.110 - Bonded Rates(a) A utility may put a changed rate into effect by filing a bond with the commission if: (1) the 150-day suspension period has been extended under Section 53.108(b); and(2) the commission fails to make a final determination before the 151st day after the date the rate change would otherwise be effective.(b) The bonded rate may not exceed the proposed rate.(c) The bond must be:(1) payable to the commission in an amount, in a form, and with a surety approved by the commission; and(2) conditioned on refund.(d) The utility shall refund or credit against future bills:(1) money collected under the bonded rates in excess of the rate finally ordered; and(2) interest on that money, at the current interest rate as determined by the commission. Acts 1997, 75th Leg., ch. 166, Sec. 1, eff. Sept. 1, 1997.