Tsubame BHB Co., Ltd has been selected by the Tokyo Metropolitan Government (TMG) for a project to produce nitrogen-based fertilizers using green hydrogen produced in Tokyo. The company has officially entered into an agreement with TMG to implement this initiative.
The TMG has identified green hydrogen – produced from renewable energy – as a key solution for achieving a decarbonised society. TMG is actively promoting its adoption through a three-pillar strategy: ‘produce,’ ‘transport,’ and ‘use’. Conventional ammonia production relies on grey hydrogen derived from natural gas. Transitioning to green hydrogen is a critical step toward decarbonising the ammonia and fertilizer industries.
Under this project, green hydrogen produced at TMG’s production facility (scheduled to open in Keihinjima, Ota Ward, in October 2025) will be supplied to the company’s pilot plant for ammonia synthesis. In collaboration with partner companies, Tsubame BHB will use this ammonia as a raw material for the trial production of nitrogen-based fertilizers.
Tsubame BHB is a deep-tech company dedicated to solving global environmental and food security challenges through original technology to realise a sustainable society. We aim to establish on-site ammonia production systems using decentralised plants powered by our proprietary low-temperature, low-pressure ammonia synthesis technology. Founded in 2017, the company utilises electride catalyst technology developed by Honorary Professor Hideo Hosono of the Institute of Science Tokyo (formerly Tokyo Institute of Technology). Having already secured orders for two units in Japan, we are currently in discussions and collaborations for implementation in Global South regions, including Brazil, India, and Africa.