This bill directs the Federal Energy Regulatory Commission (FERC) to enhance the interregional electricity transfer capability between immediately adjacent transmission planning regions, aiming to improve grid resilience and reliability against extreme weather events, physical incidents, and cyberattacks. Within 24 months, FERC must issue regulations establishing a comprehensive process for calculating existing transfer capability, determining a minimum transfer capability, and identifying projects to achieve these levels. This minimum capability is designed to ensure reliability and optimize various transmission benefits, including improved access to lower-cost and cleaner energy, reduced congestion, and enhanced resilience for Department of Defense installations. The regulations will also outline how to identify, select, and allocate costs for specific interregional transmission projects needed to meet these minimums, while preventing the disclosure of sensitive cyberattack information. Transmission planning entities for adjacent regions will then be required to file plans with FERC every five years, starting three years after enactment, detailing how they will achieve the established minimum transfer capabilities. These plans must evaluate and select interregional transmission projects based on a broad definition of "transmission benefits," with FERC responsible for their approval or denial and for publishing annual implementation reports.