Tennessee Code Title 12. Public Property, Printing and Contracts § 12-3-908

(1) The party is a seller of the commodity;

(2) The party is doing business in the state;

(3) The commodity to be sold has an energy efficiency rating and life cycle cost lower than the commodity contracted for by the purchaser;

(4) The purchaser is a political subdivision, and the standard for the commodity has been adopted for one (1) year by the procurement commission and has not been incorporated or adopted by the political subdivision; and

(5) The aggrieved party is ready, willing and able, without any other legal constraints, to sell the commodity to the purchaser.