Tennessee Code Title 12. Public Property, Printing and Contracts § 12-3-906

When energy efficiency standards are established, the procurement commission shall adopt rules requiring life cycle costs to be used by the chief procurement officer in contracting for major energy-consuming products. In determining life cycle costs, the procurement commission and the chief procurement officer may consider the acquisition cost of the product, the energy consumption and the projected cost of energy over the useful life of the product, and the anticipated resale or salvage value of the product.