; and (2) by amending subsection (g) to read as follows: (g) Authorization of appropriations There is authorized to be appropriated to carry out this section $75,000,000 for each of fiscal years 2014 through 2023. . 6404. Repowering assistance program Section 9004(d) of the Farm Security and Rural Investment Act of 2002 ( 7 U.S.C. 8104(d) ) is amended to read as follows: (d) Authorization of appropriations There is authorized to be appropriated to carry out this section $10,000,000 for each of fiscal years 2014 through 2023. . 6405. Bioenergy program for advanced biofuels Section 9005 of the Farm Security and Rural Investment Act of 2002 ( 7 U.S.C. 8105 ) is amended— (1) in subsection (e)— (A) by striking The Secretary may and inserting the following new paragraph: (1) Amount The Secretary shall ; and (B) by adding at the end the following new paragraph: (2) Feedstock The total amount of payments made in a fiscal year under this section to one or more eligible producers for the production of advanced biofuels derived from a single eligible commodity shall not exceed one-third of the total amount of funds made available under subsection (g). ; and (2) in subsection (g)— (A) by striking paragraphs (1) and (2) and inserting the following new paragraph: (1) Authorization of appropriations There is authorized to be appropriated to carry out this section $50,000,000 for each of fiscal years 2019 through 2023.