Source: http://uscode.house.gov/view.xhtml?req=granuleid:USC-prelim-title26-section30C&num=0&edition=prelim
Timestamp: 2019-04-23 20:14:47+00:00

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There shall be allowed as a credit against the tax imposed by this chapter for the taxable year an amount equal to 30 percent of the cost of any qualified alternative fuel vehicle refueling property placed in service by the taxpayer during the taxable year.
(2) $1,000 in any other case.
(A) Any fuel at least 85 percent of the volume of which consists of one or more of the following: ethanol, natural gas, compressed natural gas, liquified natural gas, liquefied petroleum gas, or hydrogen.
(ii) at least 20 percent of the volume of which consists of biodiesel (as so defined) determined without regard to any kerosene in such mixture.
So much of the credit which would be allowed under subsection (a) for any taxable year (determined without regard to this subsection) that is attributable to property of a character subject to an allowance for depreciation shall be treated as a credit listed in section 38(b) for such taxable year (and not allowed under subsection (a)).
(B) the tentative minimum tax for the taxable year.
In the case of any qualified alternative fuel vehicle refueling property the use of which is described in paragraph (3) or (4) of section 50(b) and which is not subject to a lease, the person who sold such property to the person or entity using such property shall be treated as the taxpayer that placed such property in service, but only if such person clearly discloses to such person or entity in a document the amount of any credit allowable under subsection (a) with respect to such property (determined without regard to subsection (d)). For purposes of subsection (d), property to which this paragraph applies shall be treated as of a character subject to an allowance for depreciation.
No credit shall be allowable under subsection (a) with respect to any property referred to in section 50(b)(1) or with respect to the portion of the cost of any property taken into account under section 179.
No credit shall be allowed under subsection (a) for any property if the taxpayer elects not to have this section apply to such property.
Rules similar to the rules of section 179A(e)(4) shall apply.
The Secretary shall prescribe such regulations as necessary to carry out the provisions of this section.
This section shall not apply to any property placed in service after December 31, 2017.
Section 179A as in effect immediately before its repeal, referred to in subsec. (e)(6), means section 179A of this title as in effect before it was repealed by Pub. L. 113–295, div. A, title II, §221(a)(34)(A), Dec, 19, 2014, 128 Stat. 4042 , effective Dec. 19, 2014.
2018-Subsec. (e)(6), (7). Pub. L. 115–141 redesignated par. (7) as (6) and struck out former par. (6) which related to special rule for property placed in service during 2009 and 2010.
Subsec. (g). Pub. L. 115–123 substituted "December 31, 2017" for "December 31, 2016".
2015-Subsec. (g). Pub. L. 114–113 substituted "December 31, 2016" for "December 31, 2014".
2014-Subsec. (e)(1). Pub. L. 113–295, §218(b), amended par. (1) generally. Prior to amendment, text read as follows: "The basis of any property shall be reduced by the portion of the cost of such property taken into account under subsection (a)."
Subsec. (e)(7). Pub. L. 113–295, §221(a)(34)(B), added par. (7).
"(2) in the case of any other property, after December 31, 2013."
2013-Subsec. (g)(2). Pub. L. 112–240 substituted "December 31, 2013" for "December 31, 2011.".
2010-Subsec. (g)(2). Pub. L. 111–312 substituted "December 31, 2011." for "December 31, 2010".
2009-Subsec. (d)(2)(A). Pub. L. 111–5, §1144(b)(2), substituted "section 27" for "sections 27 and 30B".
Pub. L. 111–5, §1142(b)(3), struck out ", 30," before "and 30B".
Subsec. (e)(6). Pub. L. 111–5, §1123(a), added par. (6).
2008-Subsec. (c)(2)(C). Pub. L. 110–343, §207(b), added subpar. (C).
Subsec. (g)(2). Pub. L. 110–343, §207(a), substituted "December 31, 2010" for "December 31, 2009".
2007-Subsec. (b). Pub. L. 110–172, §6(b)(1), reenacted heading without change and amended introductory provisions generally. Prior to amendment, introductory provisions read as follows: "The credit allowed under subsection (a) with respect to any alternative fuel vehicle refueling property shall not exceed-".
"(B) any mixture of biodiesel (as defined in section 40A(d)(1)) and diesel fuel (as defined in section 4083(a)(3)), determined without regard to any use of kerosene and containing at least 20 percent biodiesel.
"(2) Residential property.-In the case of any property installed on property which is used as the principal residence (within the meaning of section 121) of the taxpayer, paragraph (1) of section 179A(d) shall not apply."
2005-Subsec. (d)(2)(A). Pub. L. 109–135, §412(d), substituted "regular tax liability (as defined in section 26(b))" for "regular tax".
Subsec. (e)(2). Pub. L. 109–135, §402(k), inserted at end "For purposes of subsection (d), property to which this paragraph applies shall be treated as of a character subject to an allowance for depreciation."
Pub. L. 115–123, div. D, title I, §40404(b), Feb. 9, 2018, 132 Stat. 148 , provided that: "The amendment made by this section [amending this section] shall apply to property placed in service after December 31, 2016."
Pub. L. 114–113, div. Q, title I, §182(b), Dec. 18, 2015, 129 Stat. 3072 , provided that: "The amendment made by this section [amending this section] shall apply to property placed in service after December 31, 2014."
Pub. L. 113–295, div. A, title I, §161(b), Dec. 19, 2014, 128 Stat. 4023 , provided that: "The amendment made by this section [amending this section] shall apply to property placed in service after December 31, 2013."
Amendment by section 218(b) of Pub. L. 113–295 effective as if included in the provision of the Energy Tax Incentives Act of 2005, Pub. L. 109–58, title XIII, to which such amendment relates, see section 218(c) of Pub. L. 113–295, set out as a note under section 30B of this title.
Amendment by section 221(a)(34)(B) of Pub. L. 113–295 effective Dec. 19, 2014, subject to a savings provision, see section 221(b) of Pub. L. 113–295, set out as a note under section 1 of this title.
Pub. L. 112–240, title IV, §402(b), Jan. 2, 2013, 126 Stat. 2337 , provided that: "The amendment made by this section [amending this section] shall apply to property placed in service after December 31, 2011."
Pub. L. 111–312, title VII, §711(b), Dec. 17, 2010, 124 Stat. 3315 , provided that: "The amendment made by this section [amending this section] shall apply to property placed in service after December 31, 2010."
Pub. L. 111–5, div. B, title I, §1123(b), Feb. 17, 2009, 123 Stat. 325 , provided that: "The amendment made by this section [amending this section] shall apply to taxable years beginning after December 31, 2008."
Amendment by section 1142(b)(3) of Pub. L. 111–5 applicable to vehicles acquired after Feb. 17, 2009, see section 1142(c) of Pub. L. 111–5, set out as an Effective and Termination Dates of 2009 Amendment note under section 24 of this title.
Amendment by section 1144(b)(2) of Pub. L. 111–5 applicable to taxable years beginning after Dec. 31, 2008, see section 1144(c) of Pub. L. 111–5, set out as an Effective and Termination Dates of 2009 Amendment note under section 24 of this title.
Pub. L. 110–343, div. B, title II, §207(c), Oct. 3, 2008, 122 Stat. 3840 , provided that: "The amendments made by this section [amending this section] shall apply to property placed in service after the date of the enactment of this Act [Oct. 3, 2008], in taxable years ending after such date."
"(1) In general.-Except as otherwise provided in this subsection, the amendments made by this section [amending this section and sections 41, 45J, 4041, 4042, 4082, and 6430 of this title, and enacting provisions set out as a note under section 6430 of this title] shall take effect as if included in the provisions of the Energy Policy Act of 2005 [Pub. L. 109–58] to which they relate.
"(2) Nonapplication of exemption for off-highway business use.-The amendment made by subsection (d)(3) [amending section 4041 of this title] shall apply to fuel sold for use or used after the date of the enactment of this Act [Dec. 29, 2007].
"(3) Amendment made by the safetea–lu.-The amendment made by subsection (d)(2)(C)(ii) [amending section 4082 of this title] shall take effect as if included in section 11161 of the SAFETEA–LU [Pub. L. 109–59]."
Amendment by section 402(k) 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, §1342(c), Aug. 8, 2005, 119 Stat. 1051 , 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."

References: §221
 §218
 §221
 §1144
 §1142
 §1123
 §207
 §207
 §6
 §412
 §402
 §40404
 §182
 §161
 §402
 §711
 §1123
 §207
 §1342