SPIE to deliver 66kV Inter-Array Cable Termination and Testing for two large offshore wind farms in Poland
Posted on 06 May 2026
SPIE Global Services Energy, a subsidiary of SPIE - the independent European leader in multi-technical services in the areas of energy and communications - announces that its wind power high-voltage specialised entity, SPIE Wind Connect, has been awarded a contract by Seaway7.
Under this agreement, SPIE Wind Connect will undertake the termination and testing of the 66kV inter-array cable network connecting the wind turbine generators (WTGs) to the offshore substations (OSS). The main offshore campaign is expected to commence in the second quarter of 2026.
The Baltyk II and Baltyk III offshore wind farms are large-scale renewable energy projects located within the Polish Exclusive Economic Zone in the southwestern Baltic Sea, off the coast of northern Poland. Each wind farm is planned to have an installed capacity of approximately 720 MW, providing a combined generation capacity of around 1,440 MW of renewable electricity, which could supply the equivalent power needs of more than 2 million Polish homes.
Each offshore wind farm layout is characterised by ten strings of five WTGs, with all turbines connected to the OSS via 66 kV inter-array cables. Within each string, the outermost WTG will be connected using a 400 mm² inter-array cable, after which a 1000 mm² cable will carry the total string power to the OSS.
Commenting on the award, Mike Senior, Managing Director of SPIE Wind Connect, said: “We are proud to have been selected by Seaway7 to support the delivery of the Baltyk II and Baltyk III offshore wind farms. This contract reflects the strength of our technical expertise in high-voltage cable termination and testing, and our proven ability to deliver safely and reliably on large-scale offshore wind projects. We look forward to working closely with Seaway7 to help enable the successful energisation of these important projects for Poland’s energy transition”.
This contract award further reinforces SPIE Wind Connect’ reputation as a trusted provider of high-voltage cable termination and testing services in the offshore wind sector, and underscores its role in supporting the delivery of major renewable energy infrastructure across Europe.
About SPIE Global Services Energy
As an international subsidiary of the SPIE Group present in around 30 countries in Europe, Africa, Asia Pacific, the Middle East and Americas, SPIE Global Services Energy operates across the entire energy production infrastructure value chain, from design to maintenance. SPIE Global Services Energy relies on an extensive local network to quickly deploy resources and meet its customers’ needs in the safest possible conditions.
Drawing on the expertise of its 5,000 employees, SPIE Global Services Energy helps players in the oil, gas and renewable energies industries improve the technical performance of their infrastructure, increase their energy efficiency and reduce their carbon footprint.
With 55,000 employees and a strong local presence, SPIE group achieved in 2025 consolidated revenue of €10.4 billion and consolidated EBITA of €793 million.
