1. (1) Any petition for reconsideration shall be filed within 15 days after the date of the entry of an order. The petition shall be served on all parties and include a statement of the grounds upon which relief is requested with reasonable specificity.
2. (2) If the petitioners seek to present new evidence, the petition must include a statement explaining the reason for failing to introduce the proposed new evidence in the original proceeding, along with a detailed description of the proposed new evidence. This statement shall include copies of documents intended for introduction, identities of proposed witnesses, and summaries of the testimony planned to be presented. Any documents unavailable to the party seeking reconsideration at the time of filing the petition may be described in as much detail as possible and may be submitted later if reconsideration is granted, but no later than three working days before the hearing on reconsideration.

3. (3) The Commission or Hearing Officer may grant or deny petitions for reconsideration of final orders under T.C.A. § 4-5-317, to the following extent:

   1. (a) Any such petition shall be granted within the twenty days fixed by T.C.A. § 4-5-317(c), or it shall be deemed denied;
   2. (b) If the petition is granted, the matter shall be heard as soon as practicable;
   3. (c) The party seeking reconsideration may be allowed to present new evidence only if the party shows that good cause existed for failing to introduce the new evidence during the original hearing. The opposing party shall be allowed to present rebuttal proof if the party seeking reconsideration is permitted to present new evidence; and
   4. (d) Any new evidence allowed to be introduced by the party seeking reconsideration shall be limited to that described in the petition for reconsideration.
4. (4) The filing of a petition for reconsideration shall not toll the period for review of a final order unless the petition for reconsideration is granted.

Authority: T.C.A. §§ 4-5-317 and 65-2-102. Administrative History: Original rule filed June 30, 2000; effective September 13, 2000. Administrative changes made to this chapter on April 27, 2018 pursuant to Public Chapter 94 of 2017; “Tennessee Regulatory Authority” references were changed to “Tennessee Public Utility Commission,” “Authority” references were changed to “Commission,” “Authority Director” references were changed to “Commissioner,” and “Chief” references were changed to “Director.” Amendments filed August 11, 2025; effective November 9, 2025.