OWC Completes Feasibility Study of Fixed-Bottom Offshore Wind Project in Japan

Project title: OWC Completes Feasibility Study of Fixed-Bottom Offshore Wind Project in Japan

Client: confidential

Sectors: Offshore Wind – Fixed

Location: Japan

Top-Line Services:

Technical studies
Engineering
Geoscience
Foundation engineering & design
Environmental advisory
Asset Management
Ports & Harbours advisory

Project summary:

OWC supported a major Japanese utility with a comprehensive offshore wind feasibility study for two fixed-bottom offshore wind projects in Japan. Conducted during the early, pre-investment phase, the study assessed the technical and commercial viability of offshore wind project sites located in separate regions, identified by METI The Ministry of Economy, Trade and Industry, and MLIT The Ministry of Land, Infrastructure, Transport and Tourism as candidate development areas.

Drawing on OWC’s deep in-country experience in the Japanese market and global offshore wind expertise, the multidisciplinary assessment provided the client with a robust basis for investment decision-making and future project development.

Project Challenges

OWC client in Japan required an independent assessment of the technical and commercial feasibility of two offshore wind projects at different stages of their maturity, to support investment and project advancement decisions.

The client needed to engage in detailed technical discussions with in-country expert with access to global offshore wind expertise, a combination that remains relatively rare in the Japanese renewables market.

Recognising the challenges of coordinating multiple consultants during early-stage development, the client sought a single technical offshore wind consultancy partner capable of managing and delivering the entire multidisciplinary feasibility study under one project structure.

Our Solutions

OWC delivered a comprehensive, multidisciplinary feasibility study covering everything from site characterisation, energy yield modelling, foundation design, construction and installation plan with ports & harbours strategy, operations and management (O&M) and late-life strategy to full-scale LCOE estimation.

The feasibility study was delivered under the leadership of an experienced Japanese bilingual Project Manager with Japanese offshore wind development experience. The project team combined local Japanese offshore wind expertise with OWC’s global offshore wind consultancy and engineering specialists, ensuring the assessment reflected both in-country requirements and international best-practice experience.

OWC Scope included:

Technical studies: Cable consultancy, wind measurement and metocean advisory, site characterisation, integrated loads analysis, wind resource & energy yield assessment
Engineering: Cables, ocean engineering
Geoscience
Foundation engineering & design
Electrical infrastructure
Environmental advisory
Asset Management Strategy and Ports & Harbours advisory
Advanced Cost Modelling & Forecasting (DEVEX, CAPEX, OPEX, DECEX)

Our Value

Clear and comprehensive evidence base for informed investment decisions

Reduced complexity of feasibility project management through a single partner delivery

Bankable, comparable LCOE and technical assessments

Integrated, multidisciplinary view of project feasibility

In-country Japan wind knowledge combined with global offshore wind expertise

Faster project execution and less rework due to bilingual skills of the project team

Dedicated project manager with first-hand knowledge from Japan’s earliest commercial offshore wind developments

Local requirements and market challenges understood from day one

Technical Studies

Our technical studies can be applied at any stage of a project or asset’s lifecycle, supporting decision-making and maximising your performance.

Engineering

Utilise decades of renewable energy engineering experience in your next project. We’re focused on delivering, operating, and financing your energy projects at a competitive price point.

Geoscience

Across any ground engineering project – whether offshore or onshore – we can provide multi-disciplinary geo-consulting guidance to steer your project in the right direction.

Environment and Consents

OWC’s Environment and Consent team works closely with client project teams to manage the interface between engineering and environment, advising on project development, permitting and planning for offshore and onshore renewable projects.

Offshore Wind Asset Management

Receive Expert Offshore Wind O&M Support Across Your Entire Project OWC provides end-to-end Asset Management solutions for renewable energy assets – offshore wind, onshore wind, solar PV, and BESS. Managing your offshore wind assets can feel like a complicated task, particularly when trying to protect your investments while maximising performance. We combine profound technical expertise, […]

Fixed Offshore Wind Engineering Consultants

With our legacy in offshore wind, OWC offers extensive experience and market knowledge in the development and engineering for offshore wind farms, supporting on all components: foundations, WTGs, cables, substations and transmission.