As used in this part, unless the context otherwise requires:
(1) “Association captive insurance company” means an association captive insurance company described in § 56-13-102, operated by an association described in § 56-13-102;
(2) “Electric cooperative” means an electric cooperative or electric membership corporation, whether organized or operating under title 65, chapter 25, or similar statutes of any other state, that distributes electric power purchased from the Tennessee Valley authority (TVA);
(3) “Interlocal agreement” means an agreement authorized by title 12, chapter 9, or by this part, or by both; and
(4) “Municipal utility” means any governmental entity as defined in § 29-20-102, having a system for the distribution of electric power, whether operated under the authority of a board of the governmental entity, by a department of the governmental entity or under the authority of a board created pursuant to the Municipal Electric Plant Law of 1935, compiled in title 7, chapter 52, or by the authority of any other law of the state, and that operates an electric generation or distribution system that distributes electric power purchased from the Tennessee Valley authority; and also includes any municipality, county or other political subdivision of another state, whether operated under a board or as a county or municipal department, that distributes electric power purchased from the Tennessee Valley authority.