by striking 50 percent and inserting 100 percent . (2) Extension through 2022 Section 168(k) is amended— (A) in the heading, by striking December 31, 2007, and before January 1, 2020 and inserting September 27, 2017, and before January 1, 2023 , (B) in paragraph (2)— (i) in subparagraph (A)(iii), clauses (i)(III) and (ii) of subparagraph (B), and subparagraph (E)(i), by striking January 1, 2020 each place it appears and inserting January 1, 2023 , and (ii) in subparagraph (B)— (I) in clause (i)(II), by striking January 1, 2021 and inserting January 1, 2024 , and (II) in the heading of clause (ii), by striking pre-January 1, 2020 and inserting pre-January 1, 2023 , and (C) in paragraph (5)(A), by striking January 1, 2020 and inserting January 1, 2023 . (3) Exception for public utilities Paragraph (6) of section 168(k) is amended to read as follows: (6) Exception for certain public utility property The term qualified property shall not include any property which is primarily used in a trade or business described in clause (iv) of section 163(j)(7)(A). . (4) Special rule Section 168(k) is amended by adding at the end the following new paragraph: (8) Special rule for property placed in service during certain periods (A) In general In the case of qualified property placed in service by the taxpayer during the first taxable year ending after September 27, 2017, if the taxpayer elects to have this paragraph apply for such taxable year, paragraphs (1)(A) and (5)(A)(i) shall be applied by substituting ‘50 percent’ for ‘100 percent’. (B) Form of election Any election under this paragraph shall be made at such time and in such form and manner as the Secretary may prescribe. . (5) Coordination with section 280F Section 168(k)(2)(F) is amended by striking clause (iii). (6) Qualified film and television and live theatrical productions (A) In general Clause (i) of section 168(k)(2)(A), as amended by section 13204, is amended— (i) in subclause (II), by striking or , (ii) in subclause (III), by adding or after the comma, and