; (ii) increase recovery rates of the targeted mineral commodity; (iii) decrease water use and other environmental impacts, as determined by the Secretary; and (iv) demonstrate a path to commercial viability. (C) Maximum prize amount The maximum amount of a prize awarded under subparagraph (A) shall be $10,000,000. (D) Authorization of appropriations There is authorized to be appropriated to the Secretary to carry out this paragraph $5,000,000 for each of fiscal years 2020 through 2023. . 4. Modifying the definition of renewable energy to include thermal energy (a) In general Section 203 of the Energy Policy Act of 2005 ( 42 U.S.C. 15852 ) is amended— (1) in subsection (b)— (A) by redesignating paragraph (2) as paragraph (3); (B) by inserting after paragraph (1) the following: (2) Qualified waste heat resource The term qualified waste heat resource means— (A) exhaust heat or flared gas from any industrial process; (B) waste gas or industrial tail gas that would otherwise be flared, incinerated, or vented; (C) a pressure drop in any gas as part of an industrial or commercial process; or (D) such other forms of waste heat as the Secretary determines appropriate. ; and (C) in paragraph (3) (as so redesignated)— (i) by striking generated from and inserting produced from, or, in the case of thermal energy resulting from a thermal energy project placed in service after December 31, 2018, thermal energy generated from, or avoided by, ; and (ii) by inserting qualified waste heat resource, before or new ; and (2) in subsection (c)— (A) by redesignating paragraphs (1) through (3) as subparagraphs (A) through (C), respectively, and indenting appropriately; (B) in the matter preceding subparagraph (A) (as so redesignated), by striking For purposes and inserting the following: (1) In general For purposes