TFI Marine and the EIC Accelerator: Springs for Floating Wind

TFI Marine, the Dublin company behind the SeaSpring and listed by the EIC as Technology From Ideas Limited, makes large polymer springs that are inserted into the mooring lines of floating offshore wind turbines to absorb peak loads, which the company says halves the loads in the line and cuts fatigue damage by 80%. It was selected in the EIC Accelerator's January 2023 cut-off for blended finance and received an EU grant of €2.43 million for TfI SeaSprings, a €3.47 million project that ran from December 2023 to August 2026, according to CORDIS, where the grant is held by TFI Marine Limited. Its three goals were to extend a turbine demonstration and finish certification, commission a commercial-scale factory, and make the product ready for market.

The project is closed. An EU results brief published in April 2026 says the SeaSpring "was certified by DNV", that TFI Marine can now make "the largest, thickest injection-moulded polymer parts in the world", and that the solution "is now ready for installation on a 2.3 MW floating offshore wind turbine", according to CORDIS. No installation, commissioning of a factory, or customer order has been announced.

Where TFI Marine Stands Now

The company markets SeaSprings for floating wind and aquaculture on its website. Its chief financial officer, Stephen Peare, said the project gave it "a validated and certified product that is backed by a manufacturing process and supply chain", and that several possible partners had been found. In its first periodic report the company said it had answered multiple requests for quotation from developers and brought in RWE, Shell, EnBW, Ocean Winds and Scottish Renewable Power through a Carbon Trust industry project.

The Technology: A Smarter, Not Stronger, Mooring

Chain and rope mooring lines start compliant and get stiffer as they stretch. A SeaSpring converts line tension into compression of a polymer block and is stiff at low loads but gives way near the turbine's thrust load, the company explains. It says this lets developers use lighter lines and anchors; on a 500 MW project it estimates average savings of €100 million and a 5-8% lower cost of electricity. The design also embeds self-powered load sensors. A prototype with sensors was tested in 2021, according to Offshore Magazine.

What the EIC Award Promised, and What the Record Shows

The project set out to extend a floating turbine demonstration with a sensor-equipped commercial SeaSpring, commission a commercial-scale factory and become ready for market. The record shows certification and a new manufacturing process. It does not show the demonstration installed or the factory commissioned: the results brief describes the product only as "ready for installation". By the end of the first reporting period, 8 of 14 technical objectives had been met, according to the periodic report.

1. CertificationDeliveredDNV.
2. Manufacturing processDeliveredPatents filed.
3. Turbine demonstrationUnverified"Ready for installation".
4. Commercial factoryUnverifiedDesigns completed in 2024.

The Money

The EU paid 70% of the project. Earlier EU projects FloTEC and FLOTANT helped validate the technology, the results brief says, so the SeaSpring has received EU support in at least three projects. TFI Marine's revenue and profit could not be checked from free sources, and whether the EIC Fund invested under the blended finance award is not public.

What Cannot Be Checked

Why Europe Should Care

The results brief notes that most of Europe's waters are too deep for fixed-bottom turbines, so floating wind is needed to expand offshore wind. The EU has now paid for the SeaSpring through three projects; the payoff depends on a first commercial installation that has not yet been announced.

The Verdict

TFI Marine and the EIC have not been asked for comment for this article. It is based entirely on public records and published statements, linked throughout.