Southwestern Power Administration: Provided further , That the sum herein appropriated for annual expenses shall be reduced as collections are received during the fiscal year so as to result in a final fiscal year 2019 appropriation estimated at not more than $10,400,000: Provided further , That notwithstanding 31 U.S.C. 3302 , up to $10,000,000 collected by the Southwestern Power Administration pursuant to the Flood Control Act of 1944 to recover purchase power and wheeling expenses shall be credited to this account as offsetting collections, to remain available until expended for the sole purpose of making purchase power and wheeling expenditures: Provided further , That for purposes of this appropriation, annual expenses means expenditures that are generally recovered in the same year that they are incurred (excluding purchase power and wheeling expenses). Construction, rehabilitation, operation and maintenance, western area power administration For carrying out the functions authorized by title III, section 302(a)(1)(E) of the Act of August 4, 1977 ( 42 U.S.C. 7152 ), and other related activities including conservation and renewable resources programs as authorized, $222,142,000, including official reception and representation expenses in an amount not to exceed $1,500, to remain available until expended, of which $220,000,000 shall be derived from the Department of the Interior Reclamation Fund: Provided , That notwithstanding 31 U.S.C. 3302 , section 5 of the Flood Control Act of 1944 ( 16 U.S.C. 825s ), and section 1 of the Interior Department Appropriation Act, 1939 ( 43 U.S.C. 392a ), up to $132,770,000 collected by the Western Area Power Administration from the sale of power and related services shall be credited to this account as discretionary offsetting collections, to remain available until expended, for the sole purpose of funding the annual expenses of the Western Area Power Administration: Provided further , That the sum herein appropriated for annual expenses shall be reduced as collections are