; (C) CHP savings; (D) codes and standards savings of electricity; and (E) fuel switching energy savings that results in net savings of electricity. (11) Fuel switching energy savings (A) In general The term fuel-switching energy savings means net energy savings, calculated in accordance with subparagraph (B), from end-user switches from 1 energy source to another, as determined in accordance with regulations promulgated by the Secretary. (B) Calculation For purposes of calculating fuel-switching net energy savings— (i) electricity use shall be evaluated based on the average quantity of fuel burned at a new power plant taking into account existing and planned renewable energy generators to provide each kilowatt hour of electricity; (ii) electricity and natural gas use shall include losses in the transmission and distribution system; and (iii) fuel-switching that is not cost-effective to the end-user shall not be counted. (12) Natural gas savings The term natural gas savings means reductions in natural gas consumption from 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 natural gas, adjusted to reflect any associated increase in electricity consumption or consumption of other fuels at the facility; (B) reductions in leakage, operational losses, and consumption of natural gas fuel to operate a gas distribution system, achieved by a retail natural gas supplier, as compared to similar leakage, losses, and consumption during a base period of not less than 1 year; (C) codes and standards savings of natural gas