; (ii) gas produced from the gasification or pyrolization of post-recycled municipal solid waste; (iii) biogas; (iv) landfill methane; (v) animal waste or animal byproducts; (vi) food waste; (vii) if diverted from or separated from other waste out of a municipal waste stream— (I) paper products that are not commonly recyclable; (II) vegetation; (III) tree trimmings; (IV) solid-wood yard waste, pallets, or crates; or (V) manufacturing and construction debris; or (viii) any byproduct of a wood or paper mill operation, including lignin in spent pulping liquors; and (B) at a facility that the Secretary has certified, within the past 3 years, is in compliance with all applicable Federal and State environmental permits. (17) Retail electricity supplier The term retail electricity supplier , as determined for each calendar year, means an entity in the United States that sold not fewer than 20 megawatt-hours of electric energy to electric consumers for purposes other than resale during the preceding calendar year. (18) Sale The term sale , when used with respect to electric energy, has the meaning given such term in section 3(13) of the Public Utility Regulatory Policies Act of 1978 ( 16 U.S.C. 2602(13) ). (19) Secretary The term Secretary means the Secretary of Energy. (20) State Except as otherwise provided in this title, the term State means a State of the United States and any district, commonwealth, territory, or possession of the United States. (21) Zero-emission electricity The term zero-emission electricity means the fraction of the electric energy generated by a given generating unit whose generation is not associated with the release of greenhouse gases to the atmosphere. The number of megawatt-hours of zero-emission electricity of a given generating unit is equal to the product obtained by multiplying— (A) the qualified electricity generation of the generating unit