Honda has announced its plans to test a high-differential pressure water electrolysis system at the International Space Station in partnership with Sierra Space and Tec-Masters. This system is part of Honda's vision to create a regenerative fuel cell system for sustaining human life on the Moon. Leveraging hydrogen fuel cell technology, Honda aims to develop a circulative renewable energy system that can produce oxygen, hydrogen, and electricity continuously. This system will utilize sunlight and water resources on the lunar surface. During the Lunar Day, electricity generated by the sun will power the process, producing hydrogen and oxygen from water through Honda's water electrolysis system. In contrast, during the Lunar Night, the system will use oxygen for astronauts to breathe and generate electricity by combining the remaining oxygen with the hydrogen produced earlier. The byproduct of this process is water, which is recycled back into the system to complete a closed-loop energy cycle. Honda's advanced water electrolysis system is designed for long-term operations on the Moon, emphasizing efficiency, reliability, and lightweight compact design to reduce transportation costs in lunar development. The company will test this system's core part on the ISS to verify its efficiency and reliability in a microgravity environment. Additionally, Honda has established the U.S. Honda Space Development Division to drive technology development and collaboration with the U.S. space industry, showcasing a commitment to pioneering space exploration technology. The Space Development Division collaborates with the Japanese team to leverage Honda's core technologies for expanding human activities on the lunar surface. This initiative aligns with Honda's goal of fostering a sustainable future through innovative technology. Honda's longstanding presence in the United States and commitment to local production further support its mission of advancing technology and space exploration.