Ind. Code § 8-1-3-6
All rules, practices, installations, and services prescribed, approved, or required by the commission shall be in force and shall be prima facie reasonable unless finally found otherwise by the court of appeals or by the supreme court if the cause is transferred to and decided by that court. However, pending the appeal as in this chapter provided, any municipally owned utility, public utility, rural electric membership corporation, or rural communications cooperative corporation whose rate or rates are affected by the decision, ruling, or order appealed from shall have the right to collect the rate or rates as fixed by said decision, ruling, or order, or the former rate, whichever is higher in amount, and such municipally owned utility, public utility, corporation, or association shall refund the difference to each consumer or contract customer if such difference be not sustained upon appeal. However, pending the appeal as in this chapter provided, the court of appeals, upon good cause shown by verified petition, may authorize and permit, but not require, any common or contract carrier whose rate or rates are affected by the decision, ruling, or order appealed from, to collect the rate or rates published and in effect or the rate or rates sought to be put into effect, immediately prior to the commencement of the proceeding before the commission, subject to such provisions for bond or escrow as the court shall provide to protect the interest of all parties of record before the court.
IC 8-1-3-6