; or (ii) in the case of a PSDAR relating to the decommissioning of 1 or more nuclear power generation units, as determined by the Commission, $500,000 for each nuclear power plant in which those units are located. (B) Requirements The regulations promulgated under subparagraph (A) shall provide that— (i) for each subsequent PSDAR relating to a nuclear power plant for which a PSDAR was previously submitted relating to the power plant or any nuclear power generation unit located in the power plant— (I) if consultation is required under section 113 b. of the Atomic Energy Act of 1954 with respect to the subsequent PSDAR or any decommissioning activities relating to the subsequent PSDAR, the licensee submitting the subsequent PSDAR shall certify that the licensee has paid to the Commission for deposit into the Fund $500,000, which shall be in addition to any amounts previously paid to the Commission for deposit into the Fund relating to any previously submitted PSDAR; and (II) if consultation under section 113 b. of the Atomic Energy Act of 1954 is not required with respect to the subsequent PSDAR or any decommissioning activities relating to the subsequent PSDAR, the licensee submitting the subsequent PSDAR shall certify that such consultation is not required; (ii) a licensee may pay to the Commission the amounts described in clause (i) or (ii) of subparagraph (A) or in subclause (I) of clause (i) at any time prior to the submission of a PSDAR relating to those amounts; and (iii) with respect to a merchant power plant, no amounts may be withdrawn from the decommissioning trust fund relating to that merchant power plant for the purpose of paying to the Commission an amount described in— (I) clause (i) or (ii) of subparagraph (A)