; (2) in subparagraph (B), by striking the period at the end and inserting ; and ; and (3) by adding at the end the following: (C) all prudently incurred costs associated with payments to jurisdictions impacted by electric transmission facilities developed pursuant to section 216. . (h) Conforming amendment Section 50151(b) of Public Law 117–169 ( 42 U.S.C. 18715(b) ) is amended by striking facilities designated by the Secretary to be necessary in the national interest and inserting facilities in national interest electric transmission corridors designated by the Secretary . 202. Definition of natural gas under the Natural Gas Act (a) In general Section 2 of the Natural Gas Act ( 15 U.S.C. 717a ) is amended by striking paragraph (5) and inserting the following: (5) Natural gas means— (A) natural gas unmixed; (B) any mixture of natural and artificial gas; or (C) hydrogen mixed or unmixed with natural gas. . (b) Conforming amendments Section 7(c)(1)(A) of the Natural Gas Act ( 15 U.S.C. 717f(c)(1)(A) ) is amended, in the first sentence, in the proviso— (1) by inserting or, in the case of any person engaged in the transportation of natural gas described in section 2(5)(C), on the date of enactment of the Building American Energy Security Act of 2023 , before over the route