The Clean Air Act, referred to in text, is act July 14, 1955, ch. 360, 69 Stat. 322, as amended, which is classified generally to chapter 85 (§ 7401 et seq.) of Title 42, The Public Health and Welfare. Title II of the Act, known as the National Emissions Standards Act, is classified generally to subchapter II (§ 7521 et seq.) of chapter 85 of Title 42. Sections 202(i), 209(b), and 243(e)(2) of the Act are classified to sections 7521 (i), 7543 (b), and 7583 (e)(2), respectively, of Title 42. For complete classification of this Act to the Code, see Short Title note set out under section 7401 of Title 42 and Tables.

The date of the enactment of this section, referred to in subsecs. (b)(3)(B) and (h)(2), is the date of enactment of Pub. L. 109–58, which was approved Aug. 8, 2005.

The date of the enactment of the Energy Tax Incentives Act of 2005, referred to in subsec. (e)(2), is the date of enactment of title XIII of Pub. L. 109–58, which was approved Aug. 8, 2005.

2005—Subsec. (g)(2)(A). Pub. L. 109–135, § 412(d), substituted “regular tax liability (as defined in section 26 (b))” for “regular tax”.

Subsec. (h)(6). Pub. L. 109–135, § 402(j), inserted at end “For purposes of subsection (g), property to which this paragraph applies shall be treated as of a character subject to an allowance for depreciation.”

Amendment by section 402(j) of Pub. L. 109–135 effective as if included in the provision of the Energy Policy Act of 2005, Pub. L. 109–58, to which such amendment relates, see section 402(m)(1) of Pub. L. 109–135, set out as an Effective and Termination Dates of 2005 Amendments note under section 23 of this title.

Pub. L. 109–58, title XIII, § 1341(c), Aug. 8, 2005, 119 Stat. 1049, provided that: “The amendments made by this section [enacting this section and amending sections 38, 55, 1016, and 6501 of this title] shall apply to property placed in service after December 31, 2005, in taxable years ending after such date.”