Fibre Optic Connectivity for the Sofia Offshore Wind Farm
Executive Summary
The Sofia Offshore Wind Farm is a flagship offshore renewable energy project in the North Sea, delivering large-scale, low-carbon electricity to the United Kingdom. As part of this complex marine infrastructure programme, Passcomm supplied critical fibre optic connectivity solutions to Van Oord Offshore Wind (VOOW), supporting the successful installation and commissioning of the wind farm’s array cable network and the communications system that is required.
Project Overview
Located approximately 195 km off the north-east coast of England, Sofia Offshore Wind Farm comprises 100 offshore wind turbines, each rated at 14 MW, delivering a total installed capacity of 1.4 GW. Once fully operational, the wind farm is expected to generate enough electricity to power approximately 1.2 million typical UK households, representing a substantial contribution to the UK’s renewable energy portfolio and a major addition to the UK’s existing operational offshore wind farms.
Scope of Supply
Passcomm supplied:
- Fibre Optic Patch Panels
- Fibre Optic Dome Closures
These components form a critical part of the wind farm’s fibre optic communication and monitoring infrastructure, enabling reliable data transmission between turbines, subsea array cables, and the offshore converter platform.
Technical Implementation
Van Oord Offshore Wind successfully installed and tested approximately 360 kilometres of array cable, connecting the 100 turbines to the Offshore Converter Platform (OCP). The OCP serves as the electrical and operational hub of the Sofia project, converting power generated at 66 kV AC to 320 kV DC, enabling efficient long-distance transmission to shore.
Electricity generated offshore is transported via two export cables, each running approximately 220 km along the seabed to the Teesside coastline. Reliable fibre optic systems are essential throughout this infrastructure to support control, protection, monitoring, and communications across the wind farm.
Engineering Collaboration and Quality Assurance
Passcomm worked closely with Van Oord Offshore Wind throughout the project lifecycle to ensure the supplied fibre optic solutions met the demanding requirements of offshore deployment. This collaboration included:
- Joint technical reviews and specification alignment
- Rigorous Factory Acceptance Testing (FAT)
- VOOW approval of the final Bill of Materials (BoM) prior to production
Following successful FAT, Passcomm proceeded to full-scale manufacturing, ensuring compliance with project specifications and offshore standards.
Logistics and Offshore Readiness
Due to the harsh marine environment and the complexities of offshore installation, product transportation presented additional technical challenges. Passcomm addressed these by implementing robust, waterproof packaging solutions, ensuring that all fibre optic components arrived offshore in optimal condition, ready for installation without risk of ingress or damage.
Business Impact and Outcomes
The successful delivery and deployment of Passcomm’s fibre optic patch panels and dome closures contributed to:
- Timely and successful completion of array cable installation
- Reliable offshore communications and monitoring infrastructure
- Reduced installation risk through proven, tested components
- Enhanced collaboration between supplier and marine contractor
Conclusion
This project demonstrates Passcomm’s capability to deliver best-in-class fibre optic solutions for large-scale offshore renewable energy projects. Through close collaboration with Van Oord Offshore Wind, rigorous quality assurance, and attention to offshore-specific logistical challenges, Passcomm played a key role in supporting the successful delivery of one of the UK’s most significant offshore wind developments.