; (2) develop and implement processes to audit invoices to ensure accuracy, transparency, and fairness; and (3) modify regulations to ensure fair and appropriate processes to provide licensees and applicants an opportunity to efficiently dispute or otherwise seek review and correction of errors in invoices for fees and charges. (e) Report Not later than September 30, 2021, the Commission shall submit to the Committee on Appropriations and the Committee on Environment and Public Works of the Senate and the Committee on Appropriations and the Committee on Energy and Commerce of the House of Representatives a report describing the implementation of this section, including any impacts and recommendations for improvement. (f) Effective date Except as provided in subsection (c), this section takes effect on October 1, 2019. 103. Advanced nuclear reactor program (a) Licensing of commercial advanced nuclear reactors (1) Staged licensing For the purpose of predictable, efficient, and timely reviews, not later than 270 days after the date of enactment of this Act, the Commission shall develop and implement, within the existing regulatory framework, strategies for— (A) establishing stages in the licensing process for commercial advanced nuclear reactors; and (B) developing procedures and processes for— (i) using a licensing project plan