(a)
In general— Section 48(a)(2)(A)(i) of the Internal Revenue Code of 1986 is amended by striking “and” at the end of subclause (III) and by adding at the end the following new subclause:
“(V) energy property described in paragraph (3)(A)(viii), and”
(b)
Electrochromic glass described— Section 48(a)(3)(A) of such Code is amended by striking “or” at the end of clause (vi), by adding “or” at the end of clause (vii), and by adding at the end the following new clause:
“(viii) glass which uses electricity to change its light transmittance properties in order to heat or cool a structure, but only with respect to property the construction of which begins before January 1, 2022.”
(c)
Phaseout— Section 48(a)(6) of such Code is amended—
(1)
by striking “paragraph (3)(A)(i)” each place it appears and inserting “clause (i) or (viii) of paragraph (3)(A)”, and
(2)
by inserting “and electrochromic glass” after “solar energy property”.
(d)
Effective date— The amendment made by this section shall apply to taxable years beginning after the date of the enactment of this Act.