; (3) $195,000,000 for fiscal year 2020; (4) $195,000,000 for fiscal year 2021; (5) $200,000,000 for fiscal year 2022; (6) $200,000,000 for fiscal year 2023; (7) $195,000,000 for fiscal year 2024; (8) $150,000,000 for fiscal year 2025; and (9) $50,000,000 for fiscal year 2026. 4. Spallation Neutron Source proton power upgrade (a) In general The Secretary of Energy shall provide for a proton power upgrade to the Spallation Neutron Source. (b) Definition of proton power upgrade For the purposes of this section, the term proton power upgrade means the Spallation Neutron Source power upgrade described in— (1) the publication of the Office of Science of the Department of Energy titled Facilities for the Future of Science: A Twenty-Year Outlook , published December 2003; (2) the publication of the Office of Science of the Department of Energy titled Four Years Later: An Interim Report on Facilities for the Future of Science: A Twenty-Year Outlook , published August 2007; and (3) the publication approved by the Basic Energy Sciences Advisory Committee on June 9, 2016, titled Report on Facility Upgrades . (c) Start of operations The Secretary shall, to the maximum extent practicable, ensure that the start of full operations of the upgrade under this section occurs before December 31, 2025. (d) Funding Out of funds appropriated to the Office of Science, there shall be made available to the Secretary to carry out the upgrade under this section— (1) $26,000,000 for fiscal year 2018; (2) $70,800,000 for fiscal year 2019; (3) $33,500,000 for fiscal year 2020; (4) $40,500,000 for fiscal year 2021; (5) $21,100,000 for fiscal year 2022; (6) $13,200,000 for fiscal year 2023