; and (B) for calendar year 2024 and each calendar year thereafter, the average of the quantity of zero-emission electricity credits determined under paragraph (3) for the retail electricity supplier for such calendar year and the two prior calendar years. (2) Voluntary assignment of compliance obligation by public power utilities and electric cooperatives Any retail electricity supplier that is an electric cooperative, a State, or any political subdivision of a State, may elect to enter into an agreement with another political subdivision of a State, an electric cooperative that has an obligation to serve such retail electricity supplier, or a generator to assign any reporting or compliance obligation under this title to such other political subdivision of a State, electric cooperative, or generator. An assignment made under this paragraph shall be established through a binding agreement executed among the relevant parties. (3) Quantity of zero-emission electricity credits (A) In general For each calendar year, the Secretary shall determine a quantity of zero-emission electricity credits for a retail electricity supplier that is equal to the product obtained by multiplying— (i) the total quantity of electric energy, in megawatt-hours, consumed by electric consumers of the retail electricity supplier during the calendar year, that is provided by the retail electricity supplier or by a behind-the-meter generation system, as reported under subsection (b)