Sif Group
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.
- Company typePublic
- Founded1949
- HeadquartersRoermond, Netherlands
- Headcount501–1,000
- GTM typeB2B
- OfferingHardware or Manufacturing
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.
Sif Group firmographics
Firmographics- 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
Sif Group industry classification
Industry- 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
Where Sif Group is headquartered
LocationHeadquarters
- HQ city
- Roermond
- HQ country
- Netherlands
- HQ region
- Europe
Offices3 records
Markets served
Sif Group business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Infrastructure, Technology or R&D, Marketing or Sales
Revenue model
- 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.
- Marshalling & Logistics Services: Logistics and marshalling services for offshore wind foundations, supporting efficient project execution from production to loadout.
- 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
Sif Group product offering
Product offeringCore 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
Companies that use Sif Group
Customer profileNamed customers5 records
Segments2 records
Ideal customer profiles1 record
Sif Group technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature1 record
Sif Group partnerships and signals
Strategic signalPartnerships
Three partnerships are on record, tiered strategic and core.
- GBM WorksstrategicPartnership 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.
- SmulderscorePartner 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 OordcoreInstallation 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
Sif Group competitors and assessment
Company assessmentBroad 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
Sif Group social profiles
Digital presenceSif Group compliance and trust
Trust signalCompliance1 record
Sif Group financial estimates
Financial estimateRevenue estimate
Valuation estimate
Sif Group leadership team
Management profileNumber of profiles
Profiles7 records
Sif Group funding detail
Funding detailFunding overview
Funding rounds2 records
Investors2 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Sif Group M&A and investment
M&A and investmentM&A1 record
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Sif Group
What does Sif Group do?
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.
Is Sif Group a public or private company?
Sif Group is a public company. It is classified as public and is currently operating.
When was Sif Group founded?
Sif Group was founded in 1949. It employs 501 to 1,000 people.
Where is Sif Group based?
Sif Group is headquartered in Roermond, Netherlands, in the Europe region.
How does Sif Group make money?
Three revenue lines are on record. Offshore Wind Foundation Manufacturing is the primary driver. The others are marshalling & Logistics Services and value Engineering Services.
Who are Sif Group's main competitors?
Vestas Wind Systems is listed as a broad incumbent. Emerging players are TK Offshore (TK Elevator Marine / Titan Offshore) and CS Wind Offshore (CS Wind). Direct peers are Steelwind Nordenham, Lamprell, Bladt Industries, Smulders, EEW SPC and Eiffage Métal. Van Oord is listed as an others.
Does Sif Group have an API?
No public API is recorded for Sif Group.
What industry is Sif Group in?
Sif Group's product category is Offshore Wind Foundations. Its primary akta.pro industry code is EUAMACAD, Wind Blades, Towers & Foundations Manufacturing, with a secondary code of EUACAFAB, Offshore Wind Power Generation (Fixed-Bottom). Its NAICS code is 332312 and its SIC code is 3443.