Nothing in this part shall be construed to prohibit the adoption of an energy efficiency standard by a political subdivision when that standard has not been adopted by rules of the procurement commission, or where the standard proposed to be adopted by the political subdivision is more stringent than the standard adopted by the rules of the procurement commission.
Adoption of more stringent energy efficiency standards by political subdivisions
Tenn. Code Ann. § 12-3-911, under Life Cycle Cost and Procurement Act of 1978.
Tenn. Code Ann. § 12-3-911