Honda has announced plans to test its high-differential pressure water electrolysis system on the International Space Station (ISS) in collaboration with Sierra Space and Tec-Masters. This initiative is part of Honda's vision to develop a regenerative fuel cell system that can support human life on the lunar surface. The circulative renewable energy system, leveraging Honda's expertise in hydrogen fuel cell technology, aims to produce oxygen, hydrogen, and electricity continuously using sunlight and water resources. During the Lunar Day, the system will use solar-generated electricity to produce hydrogen and oxygen from water. In the absence of sunlight during the Lunar Night, the oxygen will be used for astronauts to breathe, while the remaining oxygen and hydrogen will be used to generate electricity. The process results in water as the sole byproduct, creating a closed-loop energy cycle similar to home solar systems on Earth. Honda's water electrolysis system is designed to be lightweight, compact, efficient, and reliable, with reduced maintenance requirements. The system's high-pressure gas storage capabilities in smaller containers aim to lower transportation costs in lunar development. Honda will conduct testing on the ISS to verify the system's efficiency and reliability in a microgravity environment. The establishment of the Space Development Division at American Honda showcases Honda's commitment to technology development in the U.S. and collaboration with the U.S. space industry. The division works on leveraging Honda's core technologies for expanding human activities and development on the Lunar surface. Through collaborations with Sierra Space and Tec-Masters, Honda aims to promote sustainability, innovation, and technological advancements in space exploration.