Eligible energy conservation measures are those which a) conserve energy (on a site BTU basis); b) have a simple payback of not less than one (1) nor more than fifteen (15) years. The payback period with calculations and the cost of the energy conservation measure must be provided.
Ga. Comp. R. & Regs. R. 187-4-1-.07
O.C.G.A. Sec. 28-5-122.