shall be available until September 30, 2021, for program direction. Other defense activities For Department of Energy expenses, including the purchase, construction, and acquisition of plant and capital equipment and other expenses, necessary for atomic energy defense, other defense activities, and classified activities, in carrying out the purposes of the Department of Energy Organization Act ( 42 U.S.C. 7101 et seq.), including the acquisition or condemnation of any real property or any facility or for plant or facility acquisition, construction, or expansion, $901,261,000, to remain available until expended: Provided , That of such amount, $324,798,000 shall be available until September 30, 2021, for program direction. Power marketing administrations Bonneville power administration fund Expenditures from the Bonneville Power Administration Fund, established pursuant to Public Law 93–454 , are approved for the Steigerwald Floodplain Restoration Project and, in addition, for official reception and representation expenses in an amount not to exceed $5,000: Provided , That during fiscal year 2020, no new direct loan obligations may be made: Provided further , Expenditures from the Bonneville Power Administration Fund, established pursuant to Public Law 93–454 are authorized and approved, without fiscal year limitation, for the cost of current and future year purchases or payments of emissions expenses associated with Bonneville Power Administration power and transmission operations in states with clean energy programs: Provided further , This expenditure authorization is limited solely to Bonneville Power Administration’s voluntary purchase or payments made in conjunction with state clean energy programs and is not a broader waiver of Bonneville Power Administration’s sovereign immunity. Operation and maintenance, southeastern power administration For expenses necessary for operation and maintenance of power transmission facilities and for marketing electric power and energy, including transmission wheeling and