; and (2) in 2030, and in each year thereafter, 100 percent. (b) Regulations Not later than 180 days after the date of enactment of this section, the Administrator shall issue regulations to carry out this section. (c) Required submissions The regulations issued under subsection (b) shall require a vehicle manufacturer to submit to the Environmental Protection Agency, the Department of Energy, and the Department of Transportation— (1) not later than one year after the date of enactment of this section, and annually thereafter, a plan to achieve compliance with the requirements of this section, including the steps to be taken with respect to materials and supply chains; (2) by April 15, and annually thereafter, a report on compliance with this section, including evidentiary documentation, regarding such compliance; and (3) documentation regarding lifecycle greenhouse gas emissions of applicable new zero emission vehicles. (d) Grants for transition assistance (1) In general The Secretary of Transportation shall make competitive grants to vehicle manufacturers to pay up to 50 percent of the costs of meeting the requirements under this section. (2) Priority In awarding grants under this subsection, the Secretary of Transportation shall give priority to vehicle manufacturers who demonstrate significant financial need, as determined by the Secretary of Transportation, to meet the requirement of paragraph (1) or (2) of subsection (a). (3) Application To be eligible to receive a grant under this subsection, a vehicle manufacturer shall submit to the Secretary of Transportation an application at such time, in such manner, and containing such information as the Secretary of Transportation may require. (e) Report Not later than 180 days after the date of the enactment of this section, the Administrator shall develop and publish, including on the public website of the Environmental Protection Agency, a report on— (1) best practices for meeting the requirements of paragraphs (1) and (2) of subsection (a)