U.S. Firm Unveils Mobile Hydrogen Nanogrid to Refuel Long-Range Military Drones A U.S.-based defense energy company has unveiled a mobile hydrogen nanogrid designed to refuel and power long-range military drones in the field, marking a major advance in autonomous warfare logistics. The system generates, stores, and distributes clean hydrogen energy on demand—without relying on traditional fuel convoys or fixed infrastructure. The nanogrid functions as a self-contained energy hub, combining hydro