; and (2) identify such a methodology or methodologies, as appropriate for generation resources located within the region served by a regional transmission organization or independent system operator, as defined in section 3 of the Federal Power Act ( 16 U.S.C. 796 ), and for generation resources operating outside such regions. (b) Commission review of dynamic crediting methodologies (1) The Secretary shall share the identified dynamic crediting methodologies with the Commission. (2) Not later than 120 days after its receipt of the dynamic crediting methodologies from the Secretary, the Commission shall hold a technical conference in partnership with State electric utility regulators to evaluate the dynamic crediting methodologies, including evaluation of alternatives. (3) Not later than 180 days after the technical conference held pursuant to paragraph (2), and after providing an opportunity for public comment, the Commission shall provide a report to the Secretary on the technical conference and any Commission recommendations or evaluation concerning dynamic crediting methodologies. (c) Determination No later than 180 days following receipt of the report provided pursuant to subsection (b)(3), the Secretary, in consultation with the Administrator of the Environmental Protection Agency, shall approve use of one or more identified dynamic crediting methodologies to issue clean electricity credits if the Secretary determines that such use would— (1) significantly enhance confidence that a clean electricity standard would achieve the carbon dioxide emission reduction targets set forth in section 611(a)(2)