Japan eyes floating vertical-axis wind turbines to solve energy challenges

In a major move to tap into offshore wind energy, a group of leading Japanese companies has been chosen to carry out a crucial study on the feasibility of using large-scale floating vertical-axis wind turbines.

This project is an important part of Japan’s strategy to make renewable energy a main source of power.

The consortium includes well-known companies such as Albatross Technology, Electric Power Development (J-POWER), Tokyo Electric Power Company Holdings (TEPCO HD), Kawasaki Kisen Kaisha (“K” LINE), and Sumitomo Heavy Industries Marine & Engineering (SHI-ME).

They are conducting the study under the New Energy and Industrial Technology Development Organization’s (NEDO) initiative to advance next-generation floating offshore wind power technologies.

Addressing geographical challenges

Japan faces unique geographical challenges due to the limited extent of shallow coastal waters, making traditional offshore wind turbines less viable. This situation requires innovative floating solutions.

“Given the limited shallow coastal waters around Japan, there is a pressing need to commercialize floating offshore wind technology,” mentioned the press release.

“This feasibility study aims to verify the viability of large-scale commercial vertical axis (floating axis) wind turbines, where both the turbine and floating foundation rotate together, as a game-changing next-generation technology for floating offshore wind turbines,” it added.

These turbines represent an innovative approach where both the turbine and its floating base rotate together.

Focus on design and cost-efficiency

The consortium is focusing on the design process to gain preliminary design approval for these turbines.

This technology offers benefits similar to traditional horizontal-axis turbines but with the advantage of using smaller, cheaper floating structures.

“Furthermore, as they can be produced using nearly the same design regardless of differences in water depth or seabed conditions, it is expected that mass deployment will also lead to cost reductions,” remarked the press release.

Collaborative expertise

Each member of the consortium brings distinct expertise. Albatross Technology will lead the overall system design and evaluate the use of carbon fiber reinforced materials. J-POWER will look into the certification processes for the floating foundation and analyze the supply chain.

TEPCO HD will develop numerical analysis methods for these large turbines. “K” LINE will explore strategies to reduce installation and maintenance costs, while SHI-ME will research design and production techniques for large-scale turbines.

“Leveraging each company’s respective expertise, the five companies will collaborate on developing floating axis wind turbines, aiming to establish offshore wind power as a primary energy source and contribute to the realization of a carbon-neutral society,” concluded the press release .

This project is a significant step towards a carbon-neutral future, using advanced technology to tackle environmental challenges.