(a) Notwithstanding any other provision in this chapter, the utility commission by rule shall adopt a procedure allowing a utility to file with the utility commission an application to timely adjust the utility's rates to reflect an increase or decrease in documented energy costs in a pass through clause. The utility commission, by rule, shall require the pass through of documented decreases in energy costs within a reasonable time. The pass through, whether a decrease or increase, shall be implemented on no later than an annual basis, unless the utility commission determines a special circumstance applies.
(b) Notwithstanding any other provision to the contrary, this adjustment is an uncontested matter not subject to a contested case hearing. However, the utility commission shall hold an uncontested public meeting:
(1) on the request of a member of the legislature who represents the area served by the water and sewer utility; or
(2) if the utility commission determines that there is substantial public interest in the matter.
(c) A proceeding under this section is not a rate case and Sections 13.187, 13.1871, and 13.1872 do not apply.