42 U.S.C. § 17158

(a) Authorization of appropriations (1) Grants There is authorized to be appropriated to the Secretary for the provision of grants under the program $2,000,000,000 for each of fiscal years 2008 through 2012. (2) Administrative costs There are authorized to be appropriated to the Secretary for administrative expenses of the program— (A) $20,000,000 for each of fiscal years 2008 and 2009; (B) $25,000,000 for each of fiscal years 2010 and 2011; and (C) $30,000,000 for fiscal year 2012. (b) Maintenance of funding The funding provided under this section shall supplement (and not supplant) other Federal funding provided under— (1) a State energy conservation plan established under part D of title III of the Energy Policy and Conservation Act ( 42 U.S.C. 6321 et seq.); or (2) the Weatherization Assistance Program for Low-Income Persons established under part A of title IV of the Energy Conservation and Production Act ( 42 U.S.C. 6861 et seq.).