Sif Group

What Sif Group does

Sif Group (legal entity Sif Holding N.V.) is a Netherlands-based, publicly listed (Euronext Amsterdam: SIFG) manufacturer of steel foundations for the offshore wind industry, headquartered in Roermond with a second automated production facility at Maasvlakte Rotterdam. The company designs, engineers, and produces monopiles (its core product), transition pieces, TP-less monopiles, pin piles, and jacket legs, with 2,600+ monopiles delivered across 55 projects and an installed base enabling 22 GW of offshore wind capacity. Sif holds an estimated 35-40% share of the European offshore wind foundation market and operates 500,000 tonnes of annual steel processing capacity supported by 70 hectares of storage and a 628-metre deep-sea quay for direct loadout.

The company's technology centers on specialist in-house rolling and welding of heavy steel plates, complemented by the VibroJet® noise-reduction system developed with GBM Works for eco-friendly monopile installation. Beyond manufacturing, Sif offers value engineering, marshalling, and logistics services for end-to-end foundation delivery. Revenue is generated through project-based, individually negotiated B2B contracts with offshore wind farm developers, with FY 2025 revenue of €187.1 million (up 27.7% YoY) and €48.0 million Adjusted EBITDA. As of March 2026, the order book stood at 533 kton (343 kton contracted + 190 kton in exclusive negotiation), providing multi-year forward visibility.

Sif's strategic positioning is reinforced by its 2026 designation as a Strategic Project under the EU Net-Zero Industry Act, its planned EUR 175 million Nordic Bond issuance, and a leadership transition bringing in former Stedin CEO Koen Bogers to succeed long-serving CEO Fred van Beers. The company is expanding its international footprint beyond Northwestern Europe into the US (Empire Wind 1) and Polish (Bałtyk 2 & 3) markets, and is targeting 1,153 MW of new offshore wind capacity enabled by its 2025 production alone.

Name

Sif Group

Legal name

Sif Holding N.V.

Website

https://sif-group.com

Company type

Public

Founded year

1949

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Sif Group is a Netherlands-based, publicly listed manufacturer of steel monopiles and transition pieces for offshore wind farms, serving enterprise wind developers across Europe with 35-40% European market share.

Ownership category

akta.pro rank

Product category

Offshore Wind Foundations

NAICS

Fabricated Structural Metal Manufacturing (332312)

SIC

Fabricated Plate Work (Boiler Shops) (3443)

akta.pro primary industry

Wind Blades, Towers & Foundations Manufacturing (EUAMACAD)

akta.pro secondary industries

Offshore Wind Power Generation (Fixed-Bottom) (EUACAFAB), Offshore Wind Substructures & Marine Engineering (Monopiles, Jackets, Floating) (EUAMACAE), Structural Steel Fabrication (IMADACAA), Steel Plate, Sections & Welded Assemblies (IMADACAD)

Keywords

• Offshore wind foundations
• Monopile manufacturing
• Steel structures
• Transition pieces
• Wind farm components

Headquarters

HQ city

Roermond

HQ country

Netherlands

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Offshore Wind Foundation Manufacturing: Sif generates primary revenue through the design, engineering, and manufacturing of offshore wind foundations including monopiles, transition pieces, TP-less monopiles, pin piles, and jacket legs. Revenue is project-based with significant contract values tied to offshore wind farm developments.
2. Marshalling & Logistics Services: Logistics and marshalling services for offshore wind foundations, supporting efficient project execution from production to loadout.
3. Value Engineering Services: Engineering services to optimize foundation solutions for cost efficiency and project requirements.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

Sif Group designs, engineers, and manufactures heavy steel foundations for offshore wind turbines, including monopiles, transition pieces, TP-less monopiles, and pin piles & jacket legs. The company complements its manufacturing with marshalling & logistics services and value engineering for design optimization, providing total solutions from initial design through final loadout.

Product overview

Sif Group is a total solutions provider for offshore wind foundations, combining manufacturing of physical products with engineering and logistics services. The core product portfolio consists of Monopiles (the main product), Transition Pieces, TP-less Monopiles, and Pin Piles & Jacket Legs. These are complemented by Value Engineering services for design optimization and Marshalling & Logistics services for project execution. The company operates two production facilities in Roermond and Maasvlakte 2 Rotterdam, offering complete solutions from initial design through manufacturing to final loadout and delivery.

Differentiator

Problem solved

Functional benefit

Products and services

• Monopiles The main product and most common cost-effective foundation type for offshore wind turbines, with over 2,600 monopiles produced historically. Used by offshore wind farm developers for structural anchoring of wind turbines in marine environments.
• Transition Pieces Components that connect monopiles to offshore wind turbines, providing structural support and transition between the foundation and the tower. Used by offshore wind farm developers requiring turbine-to-foundation connections.
• TP-less Monopiles Integrated monopile design that eliminates the need for separate transition pieces, streamlining installation for offshore wind turbines. Used for projects seeking simplified foundation solutions.
• Pin Piles & Jacket Legs Piles used to anchor jacket foundations in the seabed for offshore wind turbines, enabling deployment in deeper waters. Used by offshore wind developers requiring jacket foundation solutions.
• Marshalling & Logistics Services ensuring efficient, safe, and carefully planned project execution including logistics and marshalling operations from production to loadout. Provided to offshore wind farm developers for complete project support.
• Value Engineering Engineering services for design optimization and cost reduction, providing complete solutions from initial design to final loadout. Used by offshore wind developers seeking optimized foundation solutions.

Quantifiable outcome

• 35-40% market share in European offshore wind foundation market
• +3 more outcomes

Named customers5 records

Segments2 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Three partnerships are on record, tiered strategic and core.

• GBM WorksstrategicStrategic or Co-development Partner · 1 January 2026Partnership for VibroJet® technology integration in monopile installation. GBM Works provides innovative noise reduction technology that enabled installation of three monopiles for Ecowende project with significantly reduced underwater noise without traditional noise mitigation measures.
• SmulderscoreStrategic or Co-development Partner · 1 January 2026Partner responsible for secondary steel of monopiles for Ecowende project. Smulders collaborates on complete foundation solutions combining Sif's primary steel monopiles with secondary steel components. Also completed 100 Transition Pieces for Bałtyk 2 & 3 projects.
• Van OordcoreStrategic or Co-development Partner · 1 January 2026Installation contractor providing the Boreas vessel for monopile loadout and installation at Ecowende project. Van Oord's installation ship collects finished monopiles from Sif's Maasvlakte 2 facility for offshore installation.

Scale indicators14 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• Vestas Wind Systems: Vestas (Denmark) is the largest offshore wind turbine OEM and indirectly drives demand for Sif's monopiles and transition pieces as a customer and as a system integrator. Comparable as a broad incumbent shaping the offshore wind supply ecosystem and influencing foundation design/standards that Sif must align with.

Emerging players

• TK Offshore (TK Elevator Marine / Titan Offshore): Titan Offshore / Asian offshore foundation manufacturers have been expanding capacity aimed at European offshore wind tenders. Comparable to Sif as offshore wind foundation fabricators targeting the same European developer base, representing emerging low-cost capacity additions to the market.
• CS Wind Offshore (CS Wind): CS Wind Offshore (South Korea) is expanding into offshore wind tower and foundation manufacturing, leveraging its wind tower heritage. Comparable to Sif as an offshore wind steel structure manufacturer entering the European monopile and jacket market with a lower-cost production base, posing a long-term competitive threat to European incumbents including Sif.

Direct peers

• Steelwind Nordenham: Steelwind Nordenham (Germany, part of Dillinger) manufactures monopiles and transition pieces for offshore wind using heavy plate steel. Directly comparable to Sif on core monopile manufacturing, German/Northwest European customer base, and reliance on heavy plate supply chains.
• Lamprell: Lamprell (UAE/UK-listed) fabricates offshore structures including jackets, piles, and topsides for offshore wind and oil & gas. Comparable to Sif as a heavy steel offshore foundation fabricator serving global offshore wind developers, though with a regional skew toward the Middle East, India, and UK.
• Bladt Industries: Bladt Industries (Denmark) manufactures transition pieces, monopiles, jacket foundations and substations for offshore wind and is one of the longest-standing European foundation fabricators. Directly comparable to Sif on product portfolio, customer base (European offshore wind developers), and historical role in delivering major North Sea projects.
• Smulders: Smulders (Belgium) produces heavy steel foundations and secondary steel structures for offshore wind, including transition pieces, jackets, and substations, and is an active partner-competitor of Sif on projects such as Bałtyk 2&3 and Ecowende. Directly comparable on offshore wind foundation manufacturing and value engineering services.
• EEW SPC: EEW SPC (Germany) is one of the largest European manufacturers of monopiles and other heavy steel tubular foundations for offshore wind. Directly comparable to Sif on core product (monopiles), target buyer (European offshore wind developers), and production technology (heavy steel plate rolling and welding).
• Eiffage Métal: Eiffage Métal (France) fabricates heavy steel structures for offshore wind, including jackets, substations, and floating wind foundations. Comparable to Sif in producing large-scale steel foundations for offshore wind developers, with an overlapping European customer footprint.

Others

• Van Oord: Van Oord (Netherlands) is a leading marine contractor that installs offshore wind foundations using vessels such as the Boreas, and is a strategic logistics partner of Sif (e.g. Ecowende). Comparable as a directly adjacent ecosystem participant in the offshore wind foundation value chain rather than a direct competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

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Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds2 records

Investors2 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sif Group