Common Elemental Technology Development Project adopted as NEDO Green Innovation
Fund Project for Reducing the Cost of Offshore Wind Power Generation~Joint Development between Electric Companies and Technology Development
Manufacturers for Solving Technical Issues Common to Floating Offshore Wind Turbines~
February 9, 2022
TEPCO Renewable Power, Inc.
Tohoku Electric Power Co., Inc.
Hokuriku Electric Power Company
Electric Power Development Co., Ltd.
Chubu Electric Power Co., Inc.
The Kansai Electric Power Co., Inc.
Shikoku Electric Power Co., Inc.
Kyuden Mirai Energy Co.,INC.
Sumitomo Electric Industries, Ltd.
Furukawa Electric Co., Ltd.
Toshiba Energy Systems & Solutions CorporationMitsubishi Electric Corporation

The Common Elemental Technology Development for Low-Cost Offshore Wind Power Generation
Systems Project (hereinafter referred to as, “the project”) jointly proposed by TEPCO Renewable
Power (Managing Company), Inc., Tohoku Electric Power Co., Inc., Hokuriku Electric Power
Company, Electric Power Development Co., Ltd., Chubu Electric Power Co., Inc., The Kansai
Electric Power Co., Inc., Shikoku Electric Power Co., Inc., Kyuden Mirai Energy Co.,INC, Sumitomo
Electric Industries, Ltd., Furukawa Electric Co., Ltd., Toshiba Energy Systems & Solutions
Corporation, and Mitsubishi Electric Corporation was adopted today as an offshore wind farmelectrical system technology development project; a part of the New Energy and Industrial
Technology Development Organization (NEDO) Green Innovation Fund project for reducing the costof offshore wind power generation.
There are great expectations for offshore wind power as a baseload power source in order to achievecarbon neutrality by 2050. While the cost of development of offshore wind farms in Japan is higher
compared to other countries, the waters around Japan, which are not very shallow, are better suitedfor floating foundations compared to Europe where bottom-fixed wind turbines are more common.

The joint council*1 established by technology development manufacturers and electric companies
as part of this project seeks to reduce the cost of equipment and installation/operation costs associatedwith high-voltage dynamic cables*2 and floating offshore substations/power converter stations, etc.*3,
which are common issues faced when developing floating offshore wind power generation systems.
In particular, technology development manufacturers shall develop technologies in anticipation offuture market needs, while electric companies shall deliberate/assess technologies that are anticipatedto be needed for floating offshore wind farms, thereby enabling the development of technologies
required for the actual use of offshore wind power by society.
The joint council shall promote technological development aimed at quickly reducing the cost, andexpanding development of offshore wind power farms in Japan, and contribute to achieving carbon
neutrality by 2050.

[Common Elemental Technology Development for Low-Cost Offshore Wind Power Generation
Systems Project Overview]
Period: March 2022~March 2025 (tentative)
Details: The following diagram shows the fields of elemental technology to be developed and thedevelopment focus of each company

Elemental Technology Field Focuses of the Project

Project Development Structure

*1 Joint Council
Aims to form a supply chain while strategically promoting the development of next-generation
technology needed to acquire markets in the future by gathering expert skills and knowledge fromwithin Japan and overseas, and sharing supply chains and information.
*2 High-voltage dynamic cable
Power cables that track with floating objects that pitch and roll with waves and the wind. By
attaching midline buoys to part of the cable under the water, the cable bends in the shape of a mountain
thereby allowing slack to accommodate the pitch and roll of the floating object, and mitigate theimpact on the cable from such motion.
*3 Floating offshore substations/power converter stations
Electric facilities for converting the power generated by offshore wind power farms to highvoltage/direct-current when it is sent to land. When constructing floating offshore wind power
generation facilities, these power transmission facilities will be needed to efficiently send the power
to land.