What is the primary technical role of inter-array cables in offshore wind farms?

Inter-array cables connect individual offshore wind turbines to each other and route the generated electricity to the central offshore substation. From the offshore substation, high-voltage export cables then transport the power to the onshore transmission grid.

Why is the Ecowende Hollandse Kust West project considered unique?

Ecowende was designed from inception as an ecology-focused offshore wind project aimed at having minimal environmental impact on marine life and avian ecosystems. It integrates experimental nature-inclusive designs, reduced-footprint materials, and dedicated ecological research platforms directly into its operational structure.

How do low-footprint subsea cables affect the offshore supply chain?

Low-footprint subsea cables require suppliers to utilize recycled conductors, green plastics, and low-emission manufacturing facilities to reduce Scope 3 emissions. This trend compels the wider supply chain to invest in circular economy processes to remain competitive in competitive European tenders.

Offshore Energy · May 19, 2026 (May 19) · 1 min read

TKF loads out final Ecowende inter-array cables with reduced environmental footprint

Analysis

AI-assisted analysis · reviewed by Yuri Kan

Dutch cable manufacturer TKF has finalized the load-out of the complete inter-array cable batch for the Ecowende offshore wind development situated at the Hollandse Kust West site. This milestone signals the transition to the offshore installation phase for a flagship renewable project specifically engineered to minimize ecological disruptions in the North Sea. The delivery showcases how offshore supply chain players are increasingly adopting low-carbon manufacturing techniques and sustainable materials to satisfy tighter environmental procurement standards in the European energy sector.

Key Facts

TKF (Twentsche Kabelfabriek) completed the final load-out of 66 kV inter-array cables for the Ecowende offshore wind farm.
The Ecowende project is being developed at Hollandse Kust West (HKW) Site VI, located approximately 53 kilometers off the Dutch coast near IJmuiden.
Ecowende is a joint venture between energy major Shell and Dutch utility Eneco, holding a capacity of approximately 760 MW.
The manufactured cables incorporate design modifications and recycled materials to ensure a significantly reduced carbon footprint during production and deployment.
The 760 MW offshore wind farm is planned to feature 54 wind turbines and aims to produce around 3% of the current Dutch electricity demand upon completion.
Full commercial commissioning of the Hollandse Kust West Site VI wind farm is scheduled for 2026.

Background & Context

The Dutch government awarded the Hollandse Kust West Site VI concession to Ecowende in late 2022, emphasizing ecological innovation and biodiversity preservation over purely financial bidding criteria. As European offshore wind developments expand, developer focus has broadened from sheer capacity buildout to mitigating seabed ecological damage and decarbonizing the component supply chain. TKF secured the contract to engineer and supply the balance of plant array cables with tailored, environmentally conscious manufacturing specifications to align with these regulatory benchmarks.

Market Impact

This development sets a crucial benchmark for original equipment manufacturers (OEMs) and cable fabricators supplying European offshore assets, demonstrating that environmental sustainability criteria are becoming non-negotiable award metrics. For project sponsors Shell and Eneco, achieving this manufacturing milestone on schedule insulates the project from severe European supply chain bottlenecks currently affecting high-voltage and array cable production. Furthermore, the integration of low-emission cabling solutions paves the way for standardized, low-impact subsea infrastructure across the broader North Sea and future offshore acreage auctions.

What to Watch

Subsea installation contractors will now commence lay and trenching operations for the inter-array network at the Hollandse Kust West Site VI. Turbine installation and foundation works will advance through 2025, leading up to the final grid connection and planned commercial operations in 2026.

Frequently Asked Questions

What is the primary technical role of inter-array cables in offshore wind farms?: Inter-array cables connect individual offshore wind turbines to each other and route the generated electricity to the central offshore substation. From the offshore substation, high-voltage export cables then transport the power to the onshore transmission grid.
Why is the Ecowende Hollandse Kust West project considered unique?: Ecowende was designed from inception as an ecology-focused offshore wind project aimed at having minimal environmental impact on marine life and avian ecosystems. It integrates experimental nature-inclusive designs, reduced-footprint materials, and dedicated ecological research platforms directly into its operational structure.
How do low-footprint subsea cables affect the offshore supply chain?: Low-footprint subsea cables require suppliers to utilize recycled conductors, green plastics, and low-emission manufacturing facilities to reduce Scope 3 emissions. This trend compels the wider supply chain to invest in circular economy processes to remain competitive in competitive European tenders.

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