Osaka-based Yanmar is a pioneer in diesel engine technology and a global player in manufacturing heavy machinery. Founded in 1912, the Japanese giant is today in the process of transforming their business and a part of this is their Yanmar Clean Energy Site in Okayama, where the group’s subsidiary Yanmar Energy Systems has established a 1,000m² testing centre for clean energy technologies. The facility will carry out testing and technical development of clean energy technology like hydrogen power generation systems and battery storage – and optimize their combined operation.

Clustered in a container, 28 AEM Electrolyzers produce onsite green hydrogen. The H2 from the containerized system can then be stored in a 285Nm³ tank at the electrolyzer’s outlet pressure of 8 bar. Thanks to Enapter’s dryers, the hydrogen is of fuel cell grade quality. A proprietary battery system acts as a buffer and the operation of the various energy devices can be controlled and optimized via their Y-EMS energy management system based on weather and energy supply-demand conditions.

The hydrogen is used for various testing purposes for devices that are under in-house development: These include a scalable hydrogen fuel cell power generation system that is quiet, emission-free and independent of weather, a hydrogen-mixed combustion engine micro cogeneration system enabling the blend of H2 fuel in city gas, and a CHP with a gas engine capable of generating clean energy with 100% hydrogen.