JFE Holdings, Inc.TSE: 5411

JFE Holdings: Japan's First Domestically Manufactured Monopile Foundation for Offshore Wind Power Completed

· Issued by JFE Holdings, Inc.

Summary by 6ix AI

JFE Engineering Corporation completed what it says is Japan's first domestically manufactured monopile foundation (a single large steel pile that supports an offshore wind turbine) at its Kasaoka Monopile Factory in Kasaoka City, Okayama Prefecture, and held a ceremony on August 26, 2026.

Key details

  • The monopile is for the Offshore Wind Power Project Off Oga City, Katagami City, and Akita City, Akita Prefecture, promoted by Oga Katagami Akita Offshore Green Energy LLC, a project company set up by JERA Nex bp Japan G.K., Electric Power Development Co., Ltd. (J-POWER), Tohoku Electric Power Co., Inc. and ITOCHU Corporation.
  • JFE Engineering received the order to manufacture and transport the foundations from KAJIMA CORPORATION, which handles on-site construction.
  • The monopiles measure approximately 11 m in maximum diameter and 80 m in length, and weigh approximately 2,000 t each.
  • The Kasaoka Monopile Factory was completed in March 2024; JFE Engineering says it is Japan's only monopile manufacturing facility, based on its own research as of August 2026.
  • The company uses J-TerraPlate, large heavy steel plates for wind power made by JFE Steel Corporation, which it says reduces welding work and the number of components needed.

What’s still pending

  • The remaining monopiles for the project are still to be manufactured and transported.

6ix AI wrote this summary from the release below and checked it against the release.

On 6ix: 6ix.com/news/jfe-japans-first-domestically-manufactured-monopile-foundation-for-offshore-wind-power-completed

Sep. 07, 2026

JFE Engineering Corporation

JFE Engineering Corporation (President and CEO: Kazuyoshi Fukuda; Head Office: Chiyoda-ku, Tokyo; the "Company") has completed Japan's first*1 domestically manufactured monopile foundation for offshore wind power at its Kasaoka Monopile Factory (Kasaoka City, Okayama Prefecture) and held a commemorative ceremony on August 26, 2026.
The ceremony was attended by numerous guests, including local government officials who have supported the factory since its establishment, as well as representatives from government agencies and project stakeholders.

The completed monopile is intended for the "Offshore Wind Power Project Off Oga City, Katagami City, and Akita City, Akita Prefecture," being promoted by Oga Katagami Akita Offshore Green Energy LLC. (Representative Executive Officer: Atsushi Yuihara; Head Office: Akita City, Akita Prefecture)*2. This project is among the first large-scale offshore wind power initiatives in Japan scheduled to begin operations. The Company received an order from KAJIMA CORPORATION (President: Masafumi Kiryu; Head Office: Minato-ku, Tokyo), which handles on-site construction, to manufacture and transport the foundations.*3

The Kasaoka Monopile Factory, completed in March 2024, stands as Japan's only*4 monopile manufacturing facility. Leveraging the Company's processing and welding technologies for large-scale steel structures cultivated over more than 100 years, the factory is dedicated to the highly efficient production of high-quality monopiles. Furthermore, by utilizing "J-TerraPlate®,"*5 large-unit-weight heavy steel plates for wind power generation manufactured by JFE Steel Corporation, the Company significantly reduces welding work, achieving efficient production through the collective technological and manufacturing capabilities of the JFE Group.
The monopiles to be manufactured by the Company measure approximately 11 m in maximum diameter, 80 m in length, and weigh approximately 2,000 t each. Following the completion of the first unit, the Company is committed to the reliable manufacture and transport of all remaining monopiles, contributing to the project's success.

Expanding offshore wind power deployment in Japan necessitates the development of a manufacturing base for foundation structures and a stable supply system. As Japan's sole monopile manufacturer, the Company offers integrated services, from detailed design to manufacturing and transportation. By advancing domestic production of foundation structures for offshore wind power, we aim to strengthen the supply chain, thereby contributing to the growth of Japan's offshore wind power industry and the realization of a carbon-neutral society.

  • *1 Research by JFE Engineering (as of August 2026)
  • *2 A project company established by JERA Nex bp Japan G.K., Electric Power Development Co., Ltd. (J-POWER), Tohoku Electric Power Co., Inc., and ITOCHU Corporation to promote a bottom-fixed offshore wind power project off the coasts of Oga City, Katagami City, and Akita City, Akita Prefecture
  • *3 JFE Engineering News Release on December 26, 2025, "Japan's first order received for domestic monopile production for large-scale offshore wind power project in general waters"
  • *4 Research by JFE Engineering (as of August 2026)
  • *5 Large-format steel plates specifically designed for wind power applications, which enable efficient monopile manufacturing by reducing the number of components required

First Monopile

Ceremony

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