of unused limitation If the annual credit limitation for any calendar year exceeds the aggregate amount designated for such year under this subsection, such limitation for the succeeding calendar year shall be increased by the amount of such excess. No amount may be carried under the preceding sentence to any calendar year after 2025. (3) Placed in service deadline No credit shall be determined under subsection (a) with respect to any property which is placed in service after the date that is 4 years after the date of the designation under this subsection relating to such property. (4) Selection criteria Selection criteria similar to those in subsection (d)(3) shall apply, except that in determining designations under this subsection, the Secretary, after consultation with the Secretary of Energy, shall— (A) require that applicants provide written assurances to the Secretary that all laborers and mechanics employed by contractors and subcontractors in the performance of construction, alteration or repair work on a qualifying advanced energy project shall be paid wages at rates not less than those prevailing on projects of a similar character in the locality as determined by the Secretary of Labor in accordance with subchapter IV of chapter 31 of title 40, United States Code, and (B) give the highest priority to projects which— (i) manufacture (other than primarily assembly of components) property described in a subclause of subsection (c)(1)(A)(i) (or components thereof), and (ii) have the greatest potential for commercial deployment of new applications. (5) Disclosure of designations Rules similar to the rules of subsection (d)(5) shall apply for purposes of this subsection. . (b) Clarification with respect to electrochromatic glass Section 48C(c)(1)(A)(i)(V) is amended— (1) by striking and smart grid and inserting , smart grid , and (2) by inserting , and electrochromatic glass before the comma at the end. (c) Effective date The amendment made by this section shall take effect on the date of the enactment of