NRL’s H-SUP is a portable fuel cell electric generator with greater energy per weight than batteries and lower audible and thermal signatures than combustion generators.
The use of hydrogen in key applications can lead to increased electrical efficiency and energy density, increased operational range, reduced thermal and audible signature, and reduced maintenance requirements; decreasing logistical sustainment requirements.
H-SUP was field tested at Marine Corps Base Camp Lejeune in July 2022, Marine Corps Air Station Yuma in February 2025, Marine Corps Training Area Bellows in March 2025, an Army event at Fort Polk with the 101st Airborne in May 2025, and most recently at Marine Corps Air Ground Combat Center Twentynine Palms in May 2025.
The fuel cell system in H-SUP was originally developed for use in unmanned vehicles. The high specific energy content of hydrogen enables increased range and endurance for those systems. This has been demonstrated in the Naval Air Warfare Center Aircraft Division’s H2 Stalker program, where this same fuel cell was integrated into the Stalker VXE30.
H2 Stalker provides greater combined power and energy to weight than alternate Stalker VXE30 configurations, enabling improved range, endurance, and dash metrics compared to the baseline VXE30. H2 Stalker successfully completed multiple flight tests and demonstrations in various environmental conditions.