Onshore Wind Power
Integrated Solutions Across the Wind Power Lifecycle
Since its founding in 1999, JWD has been fully involved in wind power development — from site selection to long-term maintenance — offering a seamless process that covers legal approvals, environmental assessment, design and construction, grid connection, and operations.
Development Portfolio
Numerous Onshore Wind Power Achievements
Worldwide
bines
Total Generation
Capacity
Over
- Project Planning & Site Selection
- Wind Condition Survey
- Grid Connection Procedures
- Environmental Impact Assessment
- Local Stakeholder Engagement
- Financing & Project Scheme Structuring
- Business Plan Certification
- Construction Work / Grid Interconnection
- Testing and Trial Operation
- Commercial Operation & Maintenance
Development Process Overview
This section outlines the fundamental steps involved in realising an onshore wind power project.
Project Planning & Site Selection
Using the geographical information system (GIS) and weather models, we evaluate wind conditions, grid access, land use, and environmental factors to select optimal sites for wind farms.
Comprehensive Evaluation of Wind Conditions, Weather Patterns, and Site Suitability
A wide range of environmental and technical conditions are assessed in an integrated manner. For example, the evaluation includes:
- Annual average wind speed
- Risks from natural phenomena such as lightning, typhoons, and ice/snow accumulation
- Geographic and terrain features, including proximity to coastlines or mountainous areas
A wide range of environmental and technical conditions are assessed in an integrated manner. For example, the evaluation includes:
- Annual average wind speed
- Risks from natural phenomena such as lightning, typhoons, and ice/snow accumulation
- Geographic and terrain features, including proximity to coastlines or mountainous areas
On-Site Surveys
Detailed field investigations are conducted to assess:
- Zoning and land use status
- Road access and infrastructure
- Natural environment and surrounding living conditions
Detailed field investigations are conducted to assess:
- Zoning and land use status
- Road access and infrastructure
- Natural environment and surrounding living conditions
Wind Condition Survey
A met mast is installed to collect wind data over at least a year. This data is vital for turbine layout, yield prediction, and efficient operations.
Meteorological Mast
A Meteorological Mast is a tall steel structure equipped with instruments such as anemometers and wind vanes, which are used to precisely measure wind speed and direction — key factors for wind power generation. The data collected plays a vital role in selecting optimal locations for wind farms, as well as informing their design and operation. It is an essential tool that improves forecasting accuracy and contributes to the efficient utilization of wind energy.
A Meteorological Mast is a tall steel structure equipped with instruments such as anemometers and wind vanes, which are used to precisely measure wind speed and direction — key factors for wind power generation. The data collected plays a vital role in selecting optimal locations for wind farms, as well as informing their design and operation. It is an essential tool that improves forecasting accuracy and contributes to the efficient utilization of wind energy.
Grid Connection Procedures
We coordinate with regional utilities to secure interconnection points and ensure compliance with transmission standards.
Environmental Impact Assessment
Thorough evaluations based on Japan’s Environmental Impact Assessment Law are conducted to predict and mitigate effects on wildlife, scenery, and communities.
- 1In accordance with the Environmental Impact Assessment Act, the project’s effects on local flora and fauna, landscapes, and other environmental factors are investigated, forecasted, and evaluated.
- 2Undergo procedures in the order of "Document on Primary Environmental Impact Consideration" → "Scoping Documents" → "Draft Environmental Impact Statement" → "Environmental Impact Statement" → "Follow-up Survey".
Local Stakeholder Engagement
We negotiate land use rights, draft lease agreements, and conduct community information sessions to foster trust and local understanding.
Negotiations with landowners, the conclusion of lease agreements, and the registration of property rights are conducted to secure land and ensure the legal stability of the project.
In addition, community briefing sessions are held to share information and foster mutual understanding with local residents.
Financing & Project Scheme Structuring
We establish organisational structure necessary for constructing and operating the wind farm and secure required financing.
Develop operational frameworks covering power generation, EPC (Engineering, Procurement, and Construction), and O&M (Operations and Maintenance).
Project financing is structured under FIT or FIP schemes. We also evaluate output constraints due to grid congestion.
Business Plan Certification
We obtain official certification from the government to sell electricity as a renewable energy source.
We prepare and submit project plans for national approval, including land, grid, and environmental documentation, and participate in auctions where applicable.
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Construction Work / Grid Interconnection
Detailed engineering design is prepared for the wind turbine units as well as civil and electrical works, followed by obtaining necessary permits and approvals, such as the Construction Plan Notification. After these steps, the construction phase begins, culminating in the integration of the facility into the power grid.
Component Delivery & Unloading
Large parts like blades, nacelles, rotors and towers are carefully unloaded at the port.
Civil Works & Foundation Building
Ground is reinforced and deep foundations are poured to support the turbines securely.
Transportation of Components
Large, indivisible parts like blades are transported at night while minimising the impact on ordinary roads during the transportation.
Tower & Nacelle Assembly
The bottom tower is installed first, followed by the sequential connection of tower segments using a large crane. The nacelle, which houses the generator and related components, is then mounted at the top.
Rotor & Blade Installation
Rotors are pre-assembled with blades on the ground and lifted to the nacelle as a unit.
Substation Equipment Installation
Transmission and Distribution Line Installation
Grid Connection Inspection and Integration
Testing and Trial Operation
Trial Operations are conducted to confirm that all equipment functions safely and accurately, followed by a pre-operation safety inspection.
Commercial Operation & Maintenance
Once commissioned, the wind farm enters commercial service. O&M is handled by our group company, EOS Engineering & Service Co., Ltd.
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