Asahi Kasei Starts Construction of Alkaline Water Electrolysis Pilot Test Plant for Hydrogen Production in Kawasaki, Japan

Asahi Kasei Starts Construction of Alkaline Water Electrolysis Pilot Test Plant for Hydrogen Production in Kawasaki, Japan

Asahi Kasei, a diversified Japanese multinational company, has started the construction of an alkaline water electrolysis pilot test plant for hydrogen production at its Kawasaki Works location in Kanagawa Prefecture, Japan. Construction and operation of the plant is supported by the “Green Innovation Fund” of Japan’s New Energy and Industrial Technology Development Organization (NEDO). The groundbreaking ceremony was held at the end of October 2022. Start of operation is targeted in early 2024 following construction work, equipment installation and trial operation.

For the sustainable large-scale production of hydrogen, it is essential for electrolysis equipment to be compatible with fluctuating electrical power input generated from renewable energy sources, like wind or solar power. To solve this issue, Asahi Kasei will introduce a pilot plant comprising several “AqualizerTM” electrolyzer modules to perform various trial operations regarding responsiveness to power fluctuation and long-term durability in Kawasaki.

The system features a changeable configuration with 1–4 water electrolysis modules of 0.8 MW. Utilizing multiple modules, the behavior of equipment under various conditions can be replicated, such as the case where one module malfunctions during operation, or the case of low output operation at night. This facilitates verification and improvement of apparatus design, operation methods and control technology.

Furthermore, the “AqualizerTM” electrolyzer is designed to replicate fluctuating output of renewable energy. Since renewable sources provide unstable power output, water electrolysis equipment needs to be highly responsive to fluctuations. As the equipment is designed to simulate such fluctuations, it enables verification of compatibility with renewable energy and coordination with the power system.

Hydrogen-related business defined as strategic growth field Hydrogen-related business is one of Asahi Kasei’s “10 Growth Gears” (GG10), businesses to lead the next phase of growth in fields of focus as part of its medium-term management plan 2024 focused on the theme “Be a Trailblazer.” Asahi Kasei is currently advancing its hydrogen-related business centered on the alkaline water electrolysis system for hydrogen production developed utilizing its experience and expertise gained with the membrane process for chlor-alkali electrolysis.

Asahi Kasei installed a large 10 MW-scale alkaline water electrolysis system at the Fukushima Hydrogen Energy Research Field (FH2R) as part of a project led by Japan’s NEDO and performed several trial operations since 2020. Based on the technological achievements obtained at FH2R, Asahi Kasei plans to commercialize a larger-scale alkaline water electrolysis system comprising multiple 10 MW modules by 2025.

For more information, visit www.asahi–kasei.com.

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