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plus’’, and by adding at the end the following new para-
graph:
‘‘(24) the commercial power takeoff vehicles cred-
it under section 45N(a).’’.
(c) CLERICAL AMENDMENT.—The table of sections for
subpart D of part IV of subchapter A of chapter 1, as
amended by this Act, is amended by adding at the end the
following new item:
‘‘Sec. 45N. Commercial power takeoff vehicles credit.’’.
(d) REGULATIONS.—Not later than January 1, 2005,
the Secretary of the Treasury, in consultation with the Sec-
retary of Energy, shall by regulation provide for the method
of determining the exemption from any excise tax imposed
under section 4041 or 4081 of the Internal Revenue Code
of 1986 on fuel used through a mechanism to power equip-
ment attached to a highway vehicle as described in section
45N(b)(2) of such Code, as added by subsection (a).
(e) EFFECTIVE DATE.—The amendments made by this
section shall apply to taxable years beginning after the date
of the enactment of this Act.
SEC. 2010. MODIFICATIONS TO THE INCENTIVES FOR AL-
TERNATIVE VEHICLES AND FUELS.
(a) MODIFICATION
TO
NEW
QUALIFIED
HYBRID
MOTOR
VEHICLE
CREDIT.—The 
table 
in 
section
30B(c)(2)(A) of the Internal Revenue Code of 1986, as
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added by this Act, is amended by striking ‘‘5 percent’’ and
inserting ‘‘4 percent’’.
(b) MODIFICATIONS TO EXTENSION OF DEDUCTION
FOR CERTAIN REFUELING PROPERTY.—
(1) IN GENERAL.—Subsection (f) of section 179A
of the Internal Revenue Code of 1986 is amended to
read as follows:
‘‘(f) TERMINATION.—This section shall not apply to
any property placed in service—
‘‘(1) in the case of property relating to hydrogen,
after December 31, 2011, and
‘‘(2) in the case of any other property, after De-
cember 31, 2007.’’.
(2) 
EXTENSION
OF
PHASEOUT.—Section
179A(b)(1)(B) of such Code, as amended by section
606(a) of the Job Creation and Worker Assistance Act
of 2002, is amended—
(A) by striking ‘‘calendar year 2004’’ in
clause (i) and inserting ‘‘calendar years 2004
and 2005 (calendar years 2004 through 2009 in
the case of property relating to hydrogen) ’’,
(B) by striking ‘‘2005’’ in clause (ii) and
inserting ‘‘2006 (calendar year 2010 in the case
of property relating to hydrogen)’’, and
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(C) by striking ‘‘2006’’ in clause (iii) and
inserting ‘‘2007 (calendar year 2011 in the case
of property relating to hydrogen)’’.
(3) EFFECTIVE DATE.—The amendments made
by this subsection shall apply to property placed in
service after December 31, 2003, in taxable years end-
ing after such date.
(c) MODIFICATION TO CREDIT FOR INSTALLATION OF
ALTERNATIVE FUELING STATIONS.—Subsection (l) of sec-
tion 30C of the Internal Revenue Code of 1986, as added
by this Act, is amended to read as follows:
‘‘(l) TERMINATION.—This section shall not apply to
any property placed in service—
‘‘(1) in the case of property relating to hydrogen,
after December 31, 2011, and
‘‘(2) in the case of any other property, after De-
cember 31, 2007.’’.
(d) EFFECTIVE DATE.—Except as provided in sub-
section (b)(3), the amendments made by this section shall
apply to property placed in service after September 30,
2002, in taxable years ending after such date.
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TITLE XXI—CONSERVATION AND
ENERGY EFFICIENCY PROVI-
SIONS
SEC. 2101. CREDIT FOR CONSTRUCTION OF NEW ENERGY
EFFICIENT HOME.
(a) IN GENERAL.—Subpart D of part IV of subchapter
A of chapter 1 (relating to business related credits), as
amended by this Act, is amended by adding at the end the
following new section:
‘‘SEC. 45G. NEW ENERGY EFFICIENT HOME CREDIT.
‘‘(a) IN GENERAL.—For purposes of section 38, in the
case of an eligible contractor, the credit determined under
this section for the taxable year is an amount equal to the
aggregate adjusted bases of all energy efficient property in-
stalled in a qualifying new home during construction of
such home.
‘‘(b) LIMITATIONS.—
‘‘(1) MAXIMUM CREDIT.—
‘‘(A) IN GENERAL.—The credit allowed by
this section with respect to a qualifying new
home shall not exceed—
‘‘(i) in the case of a 30-percent home,
$1,250, and
‘‘(ii) in the case of a 50-percent home,
$2,000.