Komatsu has developed a concept machine for a medium-sized hydraulic excavator that combines a H₂ fuel cell and Komatsu-developed key components to achieve carbon neutrality at workplaces of construction equipment. By advancing the Proof of Concept (PoC) tests it started in May 2023, Komatsu will accelerate its efforts to embark on the commercial production of medium-sized and large construction equipment powered by H₂ fuel cells soon.

In its mid-term management plan, Komatsu committed to minimizing environmental impact through its business, targeting a 50% reduction in CO₂ emissions from use of its products and production of its equipment by 2030 (compared to 2010 levels) and a challenge target of achieving carbon neutrality by 2050. To help its customers achieve carbon neutrality, Komatsu has been providing a variety of products, services and solutions that reduce environmental impact, such as hybrid hydraulic excavators and electric mini excavators. Komatsu is also engaged in research and development to provide products equipped with new power sources.

For the new concept machine, Komatsu adopted a H₂ fuel cell system and H₂ tank, which were produced by Toyota, on Komatsu's medium-sized hydraulic excavator. In addition to Komatsu's comprehensive control technology, the combination of Toyota’s H₂ fuel cell system and Komatsu key components, Komatsu is working toward zero exhaust emissions and a significant reduction in noise and vibration, while delivering the same powerful digging performance and high operability as engine-driven excavators.

Medium-sized and large construction equipment requires a power source with higher energy density than that of small construction equipment, which has led to the move to electrification with batteries. Because H₂ has a higher energy density and can be refueled in a shorter time than recharging batteries, Komatsu has been advancing its R&D efforts as a promising electrification choice for medium-sized and large models. To contribute to realizing a H₂ society and carbon neutrality, Komatsu will continue its efforts toward the commercial production of medium-sized and large construction machinery equipped with H₂ fuel cells by conducting PoC tests of this new concept machine.