Amend CSSB 310 by inserting the following new appropriately numbered SECTIONS to the bill and renumbering subsequent SECTIONS of the bill accordingly: SECTION ___. Subchapter C, Chapter 105, Utilities Code, is amended by adding Section 105.052 to read as follows: Sec. 105.052. REIMBURSEMENT OF REASONABLE COSTS. (a) To the extent the regulatory authority determines the costs are reasonable, a gas utility shall reimburse the costs of an affected person or a municipality that is a party to a proceeding that results from a complaint filed against the utility under Section 105.051 to the extent the affected person or party is successful in prosecuting the complaint before a regulatory authority or a court. (b) Costs for which an affected person or a municipality may receive reimbursement under this section include any reasonable expenses related to the investigation, preparation, and prosecution of the complaint, including the reasonable costs of consultants, accountants, auditors, attorneys, and engineers. (c) For purposes of this section, an affected person or a municipality may recover reasonable costs not yet paid because payment has been deferred pending a determination of reasonableness by the regulatory authority. (d) Notwithstanding any other provision of this subtitle, a gas utility may not recover any amounts paid as reimbursement under this section as or through a charge to the utility's customers. SECTION ___. Section 105.052, Utilities Code, as added by this Act, applies only to a complaint filed with a regulatory authority under Section 105.051, Utilities Code, on or after September 1, 2001.