; (C) the Commission has the ability to prevent and that would not occur absent the proposed action or alternative action; and (D) do not constitute potential effects from emissions upstream or downstream of the facility that is the subject of the application under section 3 or 7. (2) Requirement For purposes of paragraph (1)(B), a but for causal relationship is insufficient to establish a reasonably close causal relationship. (3) Alternatives Any alternatives required to be analyzed under the National Environmental Policy Act of 1969 ( 42 U.S.C. 4321 et seq. ) by the Commission shall— (A) meet the purpose and need for the proposed action; (B) where applicable, meet the goals of the applicant; and (C) be within the authority of the Federal agency to control. (4) No use of social cost metrics In conducting a review described in paragraph (1), the Commission shall not consider or apply any metric that purports to estimate the monetized damages or benefits associated with incremental increases or decreases in greenhouse gas emissions. . 3003. Federal authorizations under section 216 of the Federal Power Act Section 216(h) of the Federal Power Act ( 16 U.S.C. 824p(h) ) is amended— (1) in paragraph (1)— (A) by striking (1) In this subsection and all that follows through The term in subparagraph (A) and inserting the following: (1) Definition of Federal authorization (A) In general In this subsection, the term ; and (B) in subparagraph (B), by striking (B) The term and inserting the following: (B) Inclusions In this subsection, the term