Tennessee Code Title 68. Health, Safety and Environmental Protection § 68-211-916

(a) The state of Tennessee or any county or municipality within the solid waste region is authorized, whenever the same shall be found desirable by its governing body, to enter into contracts, agreements or other arrangements with the authority regarding any project, facility or service of the authority, including, without limitation, the collection, transfer, storage, transportation, processing or disposal of solid waste or the purchase, sale, lease or other disposition of energy, energy producing materials and other materials, commodities or properties of the authority. Any such contract or agreement may extend for any period not exceeding forty (40) years from the date thereof.

(b) Any payments to be made to the authority pursuant to an agreement may be payable from general funds, to the extent permitted by law, or from such limited source as may be agreed upon between the authority and such entity, and in the case of payments to be made from general funds, the governing body of any municipality having the taxing power may provide for the levy and collection of a direct, annual tax sufficient to make such payments to the authority when the same become due. Such tax shall be assessed, levied, collected and paid in like manner as other taxes of such municipality and shall be in addition to all other taxes now or hereafter authorized to be levied by such municipality. Such tax shall not be included within any statutory or other limitation as to rate or amount for such municipality, but shall be excluded therefrom and be in addition thereto and in excess thereof.

(c) The governing body of any municipality not having the taxing power shall, upon entering into an agreement with the authority, make adequate provision for the timely payment of all amounts to be paid to the authority.

(d) No payments shall be construed to be an indebtedness of a municipality within the meaning of any constitutional or statutory provision.