Offshore Wind
Tetra Tech provides integrated offshore wind services that accelerate project delivery and reduce risk across Europe’s rapidly evolving renewable energy landscape.
We have provided offshore wind services since the industry’s inception in Europe in the early 2000s. With more than 20 years’ experience, our experts are adept at everything from early-stage site selection through to construction, operations, and decommissioning. Drawing on our global offshore expertise and decades of marine, environmental, and engineering experience, we help clients deliver complex offshore wind projects with certainty.
Our experts provide strategic advice and practical solutions for both bottom-fixed and floating wind developments. We offer tailored support for developers, governments, and investors to navigate regulatory frameworks, engage stakeholders, and maximise environmental and economic outcomes.
Strategic Advisory and Site Selection
We provide end-to-end strategic advisory services to support early project viability and alignment with market, environmental, and policy drivers.
- Due diligence and advisory
- Leasing round support for government and developers
- Applying international standards advice to provide investment confidence
- Data management and constraints mapping
- Site and route screening, constraints mapping and selection
- Grid connection planning and routing
Environmental Assessment and Marine Consenting
Our environmental specialists lead the delivery of complex consenting processes across multiple jurisdictions, enabling timely and robust project approvals and supporting project compliance from feasibility through to construction.
- Planning, permitting, and consenting support
- Strategic environmental assessment (SEA) of plans and projects
- Environmental impact assessment (EIA) coordination
- Habitats regulations assessment (HRA) process for plans and projects
- Subject matter experts (SMEs) to support environmental assessments
- Stakeholder coordination, public consultation, and community engagement
- Compliance management during construction and operation
- Marine environmental survey design, management, and implementation
- Implementation and management of monitoring and mitigation
- Marine life mitigation, protected species observers (PSOs), marine mammal observers (MMOs), and passive acoustic monitoring (PAM)
Marine Site Characterisation and Risk Management
We design and manage integrated survey campaigns to characterise seabed and sub-seabed conditions, informing safe, efficient offshore wind project development.
- Geological desk studies for site characterisation, risk, and foundation design
- Designing and managing geophysical and geotechnical surveys and investigations
- Offshore client quality assurance/quality control (QA/QC) for marine surveys and geotechnical investigations
- Ground modelling integrating geological, geophysical, and geotechnical data
- Unexploded ordnance (UXO) risk studies, mitigation, and as low as reasonably practical (ALARP) sign-off
- Metocean measurements, monitoring systems, buoys, and forecasting
- Marine environmental survey design, management, and implementation
- Permits and consents for marine site characterisation surveys
Grid and Infrastructure Integration
We support clients with engineering and enabling works required to connect offshore wind farms to the grid and facilitate their construction and long-term operation.
- Port facility planning, design, upgrades, and development
- Landfall site appraisal and engineering
- Onshore cable route engineering and risk assessment (underground and overhead)
- Grid connection and transmission design
- Converter station and substation design
- Consenting and environmental assessment for the associated onshore grid infrastructure
- Stakeholder coordination, public consultation, and community engagement
