admin Honda has announced a significant leap in its space ambitions, revealing plans to test its renewable energy system in orbit. The initiative is a part of its broader vision to one day support sustainable human life on the Moon’s surface.
The Japanese automotive leader will collaborate with US-based companies Sierra Space and Tec-Masters to evaluate the technology aboard the International Space Station (ISS). The system, developed with support from the Japan Aerospace Exploration Agency (JAXA), is designed to continuously generate electricity and oxygen using solar power and water—resources believed to exist within lunar soil.
Honda’s release highlighted how the technology mimics a closed-loop cycle. During the Moon’s day, solar energy powers high-differential pressure water electrolysis, splitting water into hydrogen and oxygen. At night, when sunlight isn’t available, astronauts would use the stored oxygen for breathing, while Honda’s fuel cell system combines hydrogen and remaining oxygen to produce electricity. This cycle ensures uninterrupted power and life support, critical for long-term lunar missions.
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The ISS test marks a key milestone for Honda, which has already incorporated similar systems in its electric vehicles. The move aligns with Honda’s goal of extending terrestrial innovations to space “to support life in space and on Earth.”
The Moon is becoming a hotbed of international interest, with nations like the US and China racing to establish a sustained presence. Honda’s work supports the American-led Artemis program, in which Japan is a key partner.
The automotive industry’s growing interest in space is also evident in Toyota’s recent $44 million investment in Japanese rocket start-up Interstellar Technologies. With this ISS trial, Honda joins the expanding list of automakers repurposing green tech for space exploration.
The upcoming orbital test, while lacking a confirmed launch date, will be crucial in validating whether Honda’s energy system can withstand and function in the harsh environment of space—paving the way for future applications on the Moon.
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