; (B) in the case of an existing facility, consumption at the facility during a base period of not less than 1 year; (C) in the case of new equipment that replaces existing equipment at the end of the useful life of the existing equipment, consumption by new equipment of average efficiency of the same equipment type, except that customer savings under this subparagraph shall not be counted towards customer savings under subparagraph (A) or (B); and (D) in the case of new equipment that replaces existing equipment with remaining useful life— (i) consumption of the existing equipment for the remaining useful life of the equipment; and (ii) thereafter, consumption of new equipment of average efficiency. (10) Electricity savings The term electricity savings means reductions in electricity consumption achieved through measures implemented after the date of enactment of this section, as determined in accordance with regulations promulgated by the Secretary, that are limited to— (A) customer facility savings of electricity, adjusted to reflect any associated increase in fuel consumption at the facility; (B) reductions in distribution system losses of electricity achieved by a retail electricity supplier, as compared to losses attributable to new or replacement distribution system equipment of average efficiency, as defined in regulations promulgated by the Secretary; (C) CHP savings; (D) codes and standards savings of electricity