According to the Hydrogen Council, cumulative global installed capacity of water electrolyzers forecasted to reach approximately 300 GW by 2030. To meet this increasing demand, Asahi Kasei is currently developing the Aqualyzer alkaline water electrolyzer optimized for the production of green hydrogen.
In order to test this new system under realistic conditions in a multi-module setup, the company started constructing a pilot plant at its manufacturing site in Kawasaki in November 2022. The new facility started operation in March 2024.
Alkaline water electrolysis pilot test equipment
For the production of green hydrogen, electrolysis systems need to respond to fluctuating power supply from renewable energy sources such as wind or solar. In the pilot plant, four 0.8 MW Aqualyzer modules are being operated under realistic conditions, including operation during maintenance and low power supply during nighttime. 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.
Construction and operation of the pilot plant is supported by the “Green Innovation Fund” of Japan’s New Energy and Industrial Technology Development Organization (NEDO).
