Hull, 13 January 2026 – HiiROC Ltd (“HiiROC”) and Tokyo Gas Co., Ltd. (“Tokyo Gas”) are pleased to announce the signing of a non-binding Memorandum of Understanding (MoU) to explore a strategic partnership and potential future investment. The MoU, dated 5 January 2025, sets out the key areas for exploration under which the two companies will collaborate on HiiROC’s thermal plasma electrolysis technology (“TPE Technology”) in Japan, with the option to expand to other regions in the future through mutual agreement.

Under the MoU, Tokyo Gas and HiiROC will jointly assess opportunities to decarbonise Tokyo Gas customers’ operations and assets, as well as to explore potential future uses of the solid carbon by-product by Tokyo Gas customers or third parties through the application of TPE Technology. This partnership aims to leverage the combined expertise of both companies to advance decarbonisation solutions and foster innovation in the hydrogen and carbon black sectors.

“We are excited to partner with Tokyo Gas and believe this collaboration will drive significant advancements in the decarbonisation of energy and industrial assets and the carbon black sector,” said Tim Davies, CEO at HiiROC. “Together, we aim to create a sustainable future through the application of our innovative TPE Technology in Japan.”

The MoU marks a step towards a long-term vision of sustainable energy and decarbonisation solutions. The collaboration will focus on key areas such as the decarbonisation of energy assets and the potential pathways for the future utilisation of solid carbon, with the aim of achieving specific objectives outlined in the MoU.

For more information, please contact: PR@hiiroc.com

About HiiROC

HiiROC is a pioneering British company dedicated to accelerating Net Zero by delivering on the promise of affordable clean hydrogen. HiiROC’s proprietary process, Thermal Plasma Electrolysis (TPE), produces clean hydrogen using just one-fifth of the electricity needed for water electrolysis, without producing CO₂.  Low-cost, scalable, and leveraging existing infrastructure, TPE makes clean hydrogen commercially viable without waiting for new renewables, pipelines, or storage.

Founded in 2019, HiiROC has quickly established itself as a leader in the sector, with development facilities in Hull, commercial offices in the south of England, and a research lab in Europe.  Investors include Centrica, Cemex Ventures, GKN, Hyundai/Kia and World Kinect.  For more information, please visit: www.hiiroc.com

About Tokyo Gas

Tokyo Gas Co., Ltd. is the largest city gas company in Japan and a leading integrated energy provider. Guided by its Group Management Vision “Compass 2030,” the Tokyo Gas Group is committed to achieving net-zero CO₂ emissions. The Group empowers its customers on their journey to carbon neutrality by delivering a comprehensive suite of solutions including renewable power, renewable natural gas, e-methane, and hydrogen, working with strategic partners in Japan and overseas.

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