(or the Secretary’s delegate) shall provide. Such Secretary shall issue guidance within 30 days after the date of the enactment of this Act providing for a one-time submission of claims covering periods described in the preceding sentence. Such guidance shall provide for a 180-day period for the submission of such claims (in such manner as prescribed by such Secretary) to begin not later than 30 days after such guidance is issued. Such claims shall be paid by such Secretary not later than 60 days after receipt. If such Secretary has not paid pursuant to a claim filed under this subsection within 60 days after the date of the filing of such claim, the claim shall be paid with interest from such date determined by using the overpayment rate and method under section 6621 of such Code. 107. Credit for electricity produced from certain renewable resources (a) In general The following provisions of section 45(d) are each amended by striking January 1, 2018 each place it appears and inserting January 1, 2020 : (1) Paragraph (2)(A). (2) Paragraph (3)(A). (3) Paragraph (4)(B). (4) Paragraph (6). (5) Paragraph (7). (6) Paragraph (9). (7) Paragraph (11)(B). (b) Extension of election to treat qualified facilities as energy property Section 48(a)(5)(C)(ii) is amended by striking before January 1, 2018 (January 1, 2020, in the case of any facility which is described in paragraph (1) of section 45(d)), and and inserting before— (I) January 1, 2020, in the case of any facility which is described in paragraph (1) of section 45(d), and (II) January 1, 2020, in the case of any other facility, and . (c) Effective date The amendments made by this section shall take effect on January 1, 2018. 108. Production credit for Indian coal facilities (a) In general Section 45(e)(10)(A) is amended by striking 12-year period each place it appears and inserting 14-year period . (b) Effective date The amendment made by this section shall apply to coal produced after December 31, 2017. 109. Railroad track maintenance credit (a) In general Section