Tennessee Code Title 11. Natural Areas and Recreation § 11-25-114

(a) The authority is hereby declared to be performing a public function and to be a public instrumentality. The acquisition, operating and financing of any project by the authority is declared to be for a public and governmental purpose and a matter of public necessity. Accordingly, the authority and all properties at any time owned by it and the income from the properties and all bonds issued by the authority and the income from the bonds shall be exempt from all state, county and municipal taxation. For purposes of the Tennessee Securities Act of 1980, compiled in title 48, chapter 1, part 1, bonds issued by the authority shall be deemed to be securities issued by a public instrumentality or a political subdivision of the state.

(b) The authority shall be a public nonprofit corporation and no part of its net earnings remaining after payment of its expenses shall inure to the benefit of any person.