Northern Niigata Offshore Wind Power is a 400MW offshore wind power project. It is planned in Sea of Japan, Niigata, Japan. The project is currently in announced stage. It will be developed in single phase. Post completion of the construction, the project is expected to get commissioned in 2026.

Project Type Total Capacity (MW) Active Capacity (MW) Pipeline Capacity (MW) Project Status Project Location Project Developer
Offshore 400 400 Announced Niigata, Japan Cosmo Eco Power; Honmagumi; Taisei


The project is being developed by Cosmo Eco Power, Honmagumi and Taisei.

The project cost is expected to be around $1,960m. The project will be spread over an area of 96.36km².

The wind power project consists of 50 turbines.

Development Status

Post completion of the construction, the project is expected to get commissioned in 2026.

About Cosmo Eco Power

Cosmo Eco Power Co Ltd (Cosmo Eco Power) formerly Eco Power Co Ltd, a subsidiary of Cosmo Oil Co Ltd, is a renewable energy company. It offers wind power generation and distribution services. The company’s services include wind turbines electricity selling, and operation and maintenance services for self-owned and other companies’ wind turbines. Its services include analysis, processing, and due diligence services. Cosmo Eco Power operates contract business of machinery and equipment. Its project portfolio includes Reuke Wind Farm, Atsuta Wind Power Plant, Nemuro Wind Power Plant, Matsumae Wind Power Plant, Oiwake-Souran Wind Power Plant, Ishikari Bay New Port Wind Power Plant, and others. The company undertakes projects across Aomori, Iwate, Hokkaido, Ibaraki, Akita, Yamagata, Chiba, Shizuoka, Ehime and Nagasaki, Japan. Cosmo Eco Power is headquartered in Tokyo, Japan.

About Taisei

Taisei Corp (Taisei) is a construction contractor. It provides civil engineering, building and heavy construction, and real estate development services. The company develops residential housing, condominiums, and other commercial buildings in Japan and overseas. The company also carries out the construction of expressways, bridges and tunnels, roads, dams, power stations and other institutional infrastructure; and renovation of buildings such as office buildings, airports, factories, commercial facilities, and hospitals. It provides real estate services including property redevelopment, property management, trading, and selling and leasing. The company has an operational presence in the Middle East and Africa, Asia-Pacific, and Europe. Taisei is headquartered in Shinjuku-Ku, Tokyo, Japan.


All power projects included in this report are drawn from GlobalData’s Power Intelligence Center. The information regarding the project parameters is sourced through secondary information sources such as electric utilities, equipment manufacturers, developers, project proponent’s – news, deals and financial reporting, regulatory body, associations, government planning reports and publications. Wherever needed the information is further validated through primary from various stakeholders across the power value chain and professionals from leading players within the power sector.