1. (1) Unless stated otherwise in these rules or directed by the Commission or a Hearing Officer, all documents filed in any proceeding, including notices and orders, must be served on each party involved in that proceeding.
2. (2) Whenever service is required or permitted to be rendered upon a party represented by counsel under these rules, service shall be made upon such counsel, unless the Commission orders service upon the party. Service upon counsel or a party shall be made by delivering to the office of such person a copy of the document to be served, mailing it by first-class mail, or sending it by electronic mail to such person’s address as shown on a mailing or service list furnished by the Docket Manager. Service upon all parties of record shall be made in the same manner. Service by first-class mail is complete upon mailing.

Authority: T.C.A. § 65-2-102. Administrative History: Original rule filed June 30, 2000; effective September 13, 2000. Editorial changes made by the Secretary of State pursuant to Public Chapter 826 of 2002 by replacing “Executive Secretary” with “Chair of the Authority”; effective March 28, 2003. 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.