; and (B) for a retail electricity supplier that commences operation after the date of enactment of this section, such clean energy percentage as the Secretary determines to be appropriate. (5) Behind-the-meter generation The term behind-the-meter generation means the generation of clean energy using a system that operates on the customer side of the applicable utility meter, subject to the condition that the retail electricity supplier serving the generator shall submit to the Secretary, not less frequently than annually, verification of the quantity of that generation in such form, in such manner, and containing such information as the Secretary may require. (6) Carbon dioxide equivalent (A) In general The term carbon dioxide equivalent means the number of metric tons of carbon dioxide emissions with the same global warming potential over a 100-year period as 1 metric ton of another greenhouse gas. (B) Global warming potential For purposes of subparagraph (A), global warming potential shall be determined in accordance with the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. (7) Carbon intensity The term carbon intensity means the carbon dioxide equivalent emissions associated with the generation of 1 megawatt-hour of electric energy by a generator. (8) Clean energy The term clean energy means electric energy that is— (A) generated at a facility using— (i) renewable energy; (ii) qualified renewable biomass; (iii) hydropower; (iv) nuclear power; (v) qualified waste-to-energy; (vi) qualified low-carbon fuels; (vii) a qualified combined heat and power system; or (viii) any other source of energy in a manner that ensures that the facility does not exceed the applicable carbon intensity; (B) generated at a facility that— (i) captures the carbon dioxide from— (I) a waste stream of the facility; (II) another waste stream; or (III) the atmosphere directly; and (ii) prevents the release of the captured carbon dioxide into the atmosphere