Japanese technology company Asahi Kasei has officially opened a new hydrogen pilot plant in Kawasaki, Japan. The operational start of this commercial-scale facility was in March 2024. The trial operation of four 0.8 MW modules is another milestone towards the realization of a commercial multi-module 100 MW-class alkaline water electrolysis system for green hydrogen production.

Masami Takenaka, Lead Executive Officer at Asahi Kasei and responsible for the company’s hydrogen business, said, “This pilot facility is milestone not only for Asahi Kasei, but also for the global hydrogen business in general. We believe that successfully operating our equipment in this test facility will be a door opener for commercial large-scale multi-module alkaline water electrolyzers and eventually the realization of a hydrogen society”.

In addition, the equipment is designed to simulate fluctuating power input from solar or wind power. By utilizing the data obtained from these trials, Asahi Kasei will further optimize the equipment design, operation methods, and control technology of the electrolysis system. With its multi-module approach, Asahi Kasei aims to combine up to ten modules with a capacity of 10 MW each, enabling commercial large-scale electrolysis systems with a capacity of up to 100 MW.

Asahi Kasei’s hydrogen business is based on more than four decades of large-scale and long-term experience in the field of chlor-alkali electrolysis. Aiming for a total sales volume of ¥100 billion (€600 million) by 2030, the company plans to start commercial business activities for its alkaline water electrolyzers in 2025. 

The pilot plant in Kawasaki is an important step toward achieving this goal, after the successful long-term tests of its 10 MW single-stack alkaline-water electrolysis system at the Fukushima Energy Research Field (FH2R) in Namie, Fukushima, Japan, since 2020. The practical experience gained in Namie and the trial operation at the pilot plant in Kawasaki will further underpin Asahi Kasei’s market entry with large-scale and highly reliable multi-module alkaline water electrolysis equipment.

This experience will also be leveraged for the joint feasibility study with Gentari and JGC for a 60 MW-class electrolyzer in Malaysia (GI-Phase 2) targeted for 2027, as announced in November 2023.