TSE:8088

Obayashi Corporation, Iwatani Corporation and Komatsu Ltd. conducted Japan’s first on-site proof-of-concept (PoC) test of a hydrogen fuel cell-powered medium-sized hydraulic excavator in December 2025. The test took place at the Joshin-Etsu Expressway construction site under East Nippon Expressway.

The FC excavator was used for soil relocation and refueled on-site to assess operational feasibility and hydrogen supply methods. Results showed performance comparable to diesel models, with added benefits of zero exhaust emissions, lower noise and reduced vibration, improving operator comfort.

However, challenges remain, including increasing onboard hydrogen capacity and accelerating refueling. The test also clarified site conditions suitable for hydrogen equipment under existing regulations.

The three companies will advance development of hydrogen-powered construction machinery, explore mobile refueling systems and establish operational standards, aiming to support carbon neutrality at construction sites.
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Author
The Investor 02-16-26