The Department of Defense, specifically the Navy, is seeking proposals for the development of a High-Density Energy Storage System (HESS) capable of delivering energy to a medium voltage motor drive. The system must meet specific energy storage requirements, including a minimum capacity of 1.1 megajoules (MJ) and a modular design that allows for scalability, while adhering to military standards for durability and safety. This technology is crucial for enhancing energy efficiency in military applications and has potential commercial uses in vehicle and renewable energy storage markets. Interested parties should prepare to submit their proposals by May 21, 2025, with the opportunity details available on the DOD SBIR/STTR website.