This is a modification to a Broad Agency Announcement (BAA) for the research and development of Naval Power and Energy Systems, extending the white paper and proposal receipt period to February 6, 2028. The work focuses on advancing shipboard electric power and energy systems, with specific technology interests in areas like energy storage, power conversion, distribution, prime movers, rotating machines, thermal management, and power controls. The performance location is not specified in the provided text. No specific budget amounts are detailed.