Tenn. Code Ann. § 65-4-126

The general assembly declares that the policy of this state is that the Tennessee public utility commission will seek to implement, in appropriate proceedings for each electric and gas utility, with respect to which the commission has rate making authority, a general policy that ensures that utility financial incentives are aligned with helping their customers use energy more efficiently and that provides timely cost recovery and a timely earnings opportunity for utilities associated with cost-effective measurable and verifiable efficiency savings, in a way that sustains or enhances utility customers' incentives to use energy more efficiently.