; (B) the manner in which a baseline describing the use of the resources could be developed that would ensure that only incremental action that increased the use of the resources received credit; and (C) the challenges of crediting the resources, alone or in combination with other resources, in a comparable manner between organized markets and vertically integrated markets to incentivize sufficient deployment of those resources to support efficient integration into the standard. (3) Complementary policies The report under paragraph (1) shall examine the benefits and challenges of using complementary policies or standards, other than the standard established under this section, to provide effective incentives for using the additional clean energy resources. (4) Legislative recommendations As part of the report under paragraph (1), the Secretary shall provide legislative recommendations for changes to the standard established under this section or new complementary policies that would provide effective incentives for using the additional clean energy resources. (n) Periodic review and adjustments (1) National Academy of Sciences review The Secretary shall enter into an agreement with the National Academy of Sciences under which the Academy shall, not later than July 1, 2028, and every 10 years thereafter, submit to Congress and the Secretary a comprehensive evaluation of all aspects of the standard established under this section, including— (A) an evaluation of the effectiveness of the standard in decreasing the aggregate net carbon dioxide equivalent emissions in the electric sector, including— (i) a comparison of— (I) the actual carbon dioxide equivalent emissions associated with the electric sector for the preceding calendar year; and (II) (aa) for the initial review, 900,000,000 metric tons of carbon dioxide equivalent; (bb) for the review conducted with respect to calendar year 2038, 600,000,000 metric tons of carbon dioxide equivalent