1. Short title This Act may be cited as the American Energy Efficiency Act of 2019 . 2. Energy efficiency resource standard for retail electricity and natural gas suppliers (a) In general Title VI of the Public Utility Regulatory Policies Act of 1978 is amended by adding after section 609 ( 7 U.S.C. 918c ) the following: 610. Federal energy efficiency resource standard for retail electricity and natural gas suppliers (a) Definitions In this section: (1) ASHRAE; ANSI; IESNA The terms ASHRAE , ANSI , and IESNA mean the American Society of Heating, Refrigerating and Air-Conditioning Engineers, the American National Standards Institute, and the Illuminating Engineering Society of North America, respectively. (2) Base quantity (A) In general The term base quantity , with respect to a retail electricity supplier or retail natural gas supplier, means, for each calendar year for which a performance standard is established under subsection (c), the average annual quantity of electricity or natural gas delivered by the retail electricity supplier or retail natural gas supplier to retail customers during the 3 calendar years immediately preceding the first year that compliance is required under subsection (c)(1). (B) Exclusion The term base quantity , with respect to a retail natural gas supplier, does not include natural gas delivered for purposes of electricity generation. (3) CHP Savings The term CHP savings means— (A) CHP system savings from a combined heat and power system that commences operation after the date of enactment of this section