In this section, “advanced transmission technologies” has the meaning stated in § 7–207 of this subtitle. Subject to paragraphs (2) and (3) of this subsection, on or before December 1, 2026, and every 4 years thereafter, each owner or operator of a transmission line shall submit to the Commission a report that: identifies areas of significant transmission congestion costs for the immediately preceding 3 years and any reasonably foreseeable transmission constraints for the 5 years immediately following the date of the report; identifies the projected or actual cost to ratepayers as a result of past and projected future transmission congestion; identifies the feasibility and cost of using alternative means of addressing transmission congestion, including the use of advanced transmission technologies; identifies the economic, environmental, and social issues posed by the use of each alternative means identified under item (iii) of this paragraph; and if feasible, proposes an advanced transmission technology implementation plan to address areas of transmission congestion identified under item (i) of this paragraph. The report required under paragraph (1) of this subsection shall distinguish between regional and local congestion drivers and reference the PJM planning inputs or any other planning inputs used to support the congestion forecasts and proposed congestion relief solutions. The Commission may modify the reporting schedule specified in paragraph (1) of this subsection. An owner or operator of a transmission line may use any available data from PJM or other sources in completing the report required under this section.