Komatsu Ltd., under the leadership of President and CEO Hiroyuki Ogawa, has unveiled a pioneering concept of its HD785 large dump truck, now featuring a hydrogen combustion engine. This development marks a significant milestone as Komatsu embarks on proof-of-concept testing at its Ibaraki Plant in Hitachinaka City, Ibaraki Prefecture, making it the world's first large dump truck to integrate a hydrogen combustion engine. With a focus on achieving carbon neutrality, Komatsu is exploring alternative power sources, leading to the collaboration with KEYOU GmbH, a German company specializing in hydrogen engine solutions. The concept machine developed in partnership integrates a hydrogen combustion engine and tank system. Noteworthy features include a hydrogen tank mounted beside the operator's cab, enhancing hydrogen storage efficiency, and improved visibility through installed cameras and monitors in and around the cab. The upcoming proof-of-concept tests will evaluate crucial factors such as driving performance, operational duration, fuel efficiency, and safety aspects linked to high-pressure hydrogen gas usage. Hydrogen combustion engines are seen as a cost-effective solution for construction and mining equipment, offering benefits like compatibility with existing powertrain components and significantly low CO₂ emissions, aligning with carbon neutrality objectives. Despite the advantages, challenges persist, particularly concerning hydrogen supply infrastructure and safety protocols. Komatsu aims to address these challenges through industry collaborations to foster broader acceptance of hydrogen technology. In line with its environmental initiatives, Komatsu is committed to reducing CO₂ emissions by 50% by 2030 and ultimately achieving carbon neutrality by 2050. The company has already introduced various eco-friendly technologies, including hydrogen fuel cells, battery-powered equipment, and innovative power supply systems, showcasing its dedication to sustainability through research and strategic partnerships.