IndustriAll Europe and the Offshore Wind Foundations Alliance have urged the European Commission to extend steel trade safeguards to finished monopiles and other offshore wind turbine foundations. In a joint approach to Trade Commissioner Maroš Šefčovič, the organisations argue that certain steel plate and pipe products face protective measures while the complete fabricated structures can be imported without equivalent coverage.
Their intervention, made public on 23 October, is a request to change the treatment of downstream steel products. The European Commission has not introduced new monopile import duties or announced that the proposal will be adopted. The industry bodies also want closer monitoring of imported structures as the EU reviews its broader steel trade rules; the organisations have not identified a formal determination establishing their allegations of unfair competition.
A monopile is a large-diameter, predominantly tubular steel foundation that transfers the weight and cyclic operating forces from a wind turbine into the seabed. Its fabrication commonly starts with thick steel plate, which is cut and rolled into cylindrical sections. The sections are welded, tested and joined to produce a structure that must meet dimensional, fatigue and corrosion protection requirements before it can be transported to an offshore installation site.
The signatories say seven major manufacturers operate across five European countries and that they supplied all European monopile demand until 2024. Their statement reports growing competition from lower-priced imports but does not provide a comparable dataset of transaction prices, delivered import volumes or utilisation at individual European factories. The figures on industrial capacity and employment consequently support the organisations’ account of the sector rather than an independently quantified loss directly attributable to the claimed safeguard gap.
Their central concern is the treatment of a finished structure compared with its inputs. Steel plate purchased by a European fabricator can be affected by trade defence measures, while a comparable foundation fabricated abroad may enter under a different product category. Differences in input pricing, production costs, transport and import treatment can affect the total delivered bid price. Whether any particular imported foundation benefits from an unfair advantage would require product-specific evidence and the relevant trade assessment.
The fabrication work involves specialised heavy machinery and exacting inspection. Longitudinal welds connect rolled plate edges; circumferential welds join individual cans into larger assemblies. Geometric tolerances, weld quality, non-destructive testing, coatings and the handling of enormous steel sections all influence production throughput. A factory capable of assembling large monopiles also needs access to quayside facilities and transport systems suited to loads that ordinary road logistics cannot accommodate.
SeAH Wind’s Teesside facility provides a nearby example of the manufacturing processes at stake. The UK plant has described foundations more than 100 metres long and weighing over 2,000 tonnes, and has begun commercial production for the Hornsea 3 project. The production route includes cutting, rolling, welding, inspection, coating and final assembly. Because the factory is in the United Kingdom, however, it cannot be used as proof of the customs position of a foundation manufactured inside the EU.
The joint letter links the requested protection to future investment in fabrication and to skilled employment. Its signatories argue that factories built for large offshore foundations need reliable order pipelines to recover their substantial capital costs, and they connect domestic manufacturing capacity to the EU’s Net-Zero Industry Act objectives. No named factory expansion is identified as having been cancelled because of the alleged loophole, and the letter offers no trade authority finding of subsidy or dumping involving specific imports.
Project developers also have procurement constraints that the joint proposal does not quantify. Offshore wind foundations are ordered to meet particular turbine loads, water depths, seabed conditions and installation schedules. A narrower choice of imported supply could affect bid prices or delivery options where appropriate fabrication capacity is already committed. Conversely, the signatories argue that exposure to cheaper imported foundations could deter manufacturers from investing in additional European capacity.
The structures themselves are not interchangeable solely on price. Engineers select between monopiles and other foundation systems according to geology, loads, installation method and the dimensions that fabricators and vessels can handle. Even an expanded steel safeguard would leave manufacturers needing the right plate specifications, welding capacity, quality assurance arrangements and port infrastructure for each contracted design.
New heavy plate rolling machines, welding lines and waterside assembly facilities depend on long lead times and substantial investment. The signatories argue that competition on finished foundations affects the order confidence needed to make those commitments. Yet the letter supplies no plant-by-plant capacity data or forecast showing how many additional foundations European factories could produce if the requested trade treatment were adopted.
The trade question concerns EU measures, while foundation manufacturing and offshore project procurement also involve the United Kingdom and other neighbouring markets. Market integration does not create identical customs rules: any treatment of a UK-made monopile under an EU measure depends on its applicable origin, classification and the final legal scope of that measure. The joint letter does not determine those classifications.
The Commission has been asked to consider complete monopiles alongside steel inputs when shaping trade protection. Its response, any consultation and the eventual legal text would determine whether imported finished foundations become subject to additional measures. At present the development is an organised intervention by manufacturers and unions, with no enacted change to the treatment of imported offshore wind foundations.
