Estimated annual operating cost
Estimated annual operating cost means the aggregate retail cost of the energy which is likely to be consumed annually, and in the case of showerheads, faucets, water closets, and urinals, the aggregate retail cost of water and wastewater treatment services likely to be incurred annually, in representative use of a consumer product, determined in accordance with Section 323 of EPCA (42 U.S.C. 6293).
10 CFR § 430.2
For purposes of this part, words shall be defined as provided for in section 321 of the Act and as follows -