; and (B) conforms to the standards, recommended practices, requirements and criteria, supporting documents, implementation elements, and any other technical guidance for sustainable aviation fuels that are adopted by the International Civil Aviation Organization with the agreement of the United States. (2) National laboratory The term national laboratory has the meaning given the term in section 2(3) of the Energy Policy Act of 2005 ( 42 U.S.C. 15801(3) ). (d) Authorization of appropriations There are authorized to be appropriated such sums as may be necessary to carry out this section. 9. Sustainable aviation fuel credit (a) In general Subpart D of part IV of subchapter A of chapter 1 of the Internal Revenue Code of 1986 is amended by inserting after section 40A the following new section: 40B. Sustainable aviation fuel credit (a) In general For purposes of section 38, the sustainable aviation fuel credit for the taxable year is, with respect to each gallon of neat sustainable aviation fuel blending component used by the taxpayer in the production of a qualified mixture— (1) $1.50, plus (2) the applicable supplementary credit amount. (b) Applicable supplementary credit amount (1) In general For purposes of subsection (a), the applicable supplementary credit amount is $0.25, reduced (but not below zero) by the emissions reduction certification amount. (2) Emissions reduction certification amount For purposes of paragraph (1), the emissions reduction certification amount is $0.01 for every 2 percentage points below 100 percent for which the neat sustainable aviation fuel blending component is certified to reduce emissions in comparison with conventional fuel under section 10 of the Sustainable Aviation Fuel Act. (c) Neat sustainable aviation fuel blending component For purposes of this section, the term neat sustainable aviation fuel blending component means unblended liquid fuel— (1) that consists of synthesized hydrocarbons, and (2) that— (A) meets the requirements of a Department of Defense specification for