; (2) in subsection (c)— (A) by striking $10,000,000 and inserting $20,000,000 ; and (B) by striking 2020 and inserting 2025 ; (3) by redesignating subsections (d) and (e) as subsections (e) and (f), respectively; and (4) by inserting after subsection (c) the following: (d) Appalachian regional energy hub initiative Of the amounts made available under subsection (a), $5,000,000 shall be used to carry out section 14511 for each of fiscal years 2021 through 2025. . (d) Termination Section 14704 of title 40, United States Code, is amended by striking 2020 and inserting 2025 . 1507. Requirements for transportation projects carried out through public-private partnerships (a) Definitions In this section: (1) Project The term project means a project (as defined in section 101 of title 23, United States Code) that— (A) is carried out, in whole or in part, using Federal financial assistance; and (B) has an estimated total cost of $100,000,000 or more. (2) Public-private partnership The term public-private partnership means an agreement between a public agency and a private entity to finance, build, and maintain or operate a project. (b) Requirements for projects carried out through public-Private partnerships With respect to a public-private partnership, as a condition of receiving Federal financial assistance for a project, the Secretary shall require the public partner, not later than 3 years after the date of opening of the project to traffic— (1) to conduct a review of the project, including a review of the compliance of the private partner with the terms of the public-private partnership agreement; (2) (A) to certify to the Secretary that the private partner of the public-private partnership is meeting the terms of the public-private partnership agreement for the project