SciTransfer
JOIN2SCALE · Project

Automated Composite Joints to Replace Steel Welding in Offshore Wind Foundations

energyPilotedTRL 6

Imagine building a giant offshore wind turbine tower like a Lego set, but instead of welding heavy steel pieces together with fire and manual labor, you use high-strength composite wraps. It's like replacing a slow, expensive weld with a precision-fit, super-strong sleeve. This makes the building process much faster and removes the most dangerous jobs from the shipyard.

By the numbers
30,000-50,000
manual labour hours per jacket (current state)
200%
higher production throughput
30-50%
steel reduction
35%
CO2 savings
The business problem

What needed solving

European offshore wind yards are uncompetitive against Asian suppliers due to the extreme manual labor and high steel costs associated with welding jacket nodes.

The solution

What was built

A scalable pilot production line featuring automated preforming, layup, and inline terahertz NDT for composite wrap joints.

Audience

Who needs this

Offshore wind foundation manufacturersSteel fabrication yardsWind farm developersComposite materials suppliers
Business applications

Who can put this to work

Offshore Wind Energy
enterprise
Target: Wind farm developers and foundation fabricators

If you are a foundation fabricator dealing with 30,000-50,000 hours of manual welding labor per jacket — this project developed automated composite wrap joints that enable 200% higher production throughput.

Advanced Manufacturing
mid-size
Target: Robotic automation system integrators

If you are an automation provider dealing with the lack of scalable production lines for large-scale composites — this project developed a pilot line with automated preforming, layup, and terahertz NDT that reduces steel use by 30-50%.

Marine Engineering
enterprise
Target: Shipyards and offshore construction yards

If you are a shipyard dealing with high CO2 emissions and hazardous welding environments — this project developed a composite jointing system that offers up to 35% CO2 savings and eliminates most hazardous welding tasks.

Frequently asked

Quick answers

How does this affect the cost of wind energy?

The project performs techno-economic analyses on LCoE, CAPEX, and OPEX to benchmark the technology against current welded jackets and floaters. Based on available project data, it aims to make EU fabrication yards cost-competitive against Asian suppliers.

Can this be scaled to industrial levels?

Yes, the project is integrating a scalable pilot production line at Tree Composites. It includes six months of continuous operation to manufacture and validate representative X-joints.

Who owns the IP and how is licensing handled?

Based on available project data, the consortium includes 11 partners across 6 countries, but specific licensing terms are not provided. The project focuses on making results exploitable and market-ready.

What regulations or standards apply to this technology?

The project involves DNV to support certification and standardization of the composite joints. It also aligns with the Net-Zero Industry Act for large-scale deployment.

What is the timeline for implementation?

The project runs from 2026-05-01 to 2029-04-30, including a six-month continuous pilot-line operation phase.

Consortium

Who built it

The consortium is heavily industry-driven with a 64% industry ratio, consisting of 7 industrial partners, 5 of which are SMEs. This strong commercial presence, combined with 2 research centers and 1 university across 6 countries, suggests a high focus on market exploitation and industrial scalability rather than pure academic research.

How to reach the team

Contact Tree Composites BV in the Netherlands

Next steps

Talk to the team behind this work.

Contact us to connect with the JOIN2SCALE consortium for pilot line partnerships.