What Saitec Offshore Technologies does

Saitec Offshore Technologies S.L. is a Spanish private limited company, founded in 2016 as a subsidiary of Saitec Group (Grupo Saitec) and headquartered in the Bilbao/Basque Country region. The company develops and commercializes the SATH (Swinging Around Twin Hull) — a proprietary prestressed concrete floating platform for offshore wind turbines — consisting of two cylindrical horizontal hulls with conical edges linked by bar-frame structures, using a single-point mooring system that allows the platform to rotate like a weathervane. SATH is self-stable without active ballasting, suitable for both shallow and deep waters, and is designed to be cost-competitive in both CAPEX and OPEX by leveraging the globally available concrete supply chain. The technology has been validated over 10 years of R&D and 10 wave basin test campaigns, culminating in DemoSATH — Spain's first grid-connected floating offshore wind turbine — a 2MW full-scale prototype operating at BiMEP test site in the Cantabrian Sea since September 2023 and certified by Bureau Veritas Marine & Offshore in September 2024.

The company's revenue model combines SATH platform technology licensing and royalties, co-development fees and milestone payments from enterprise partnerships (notably with RWE Offshore Wind and KEPCO on DemoSATH), and substantial non-dilutive R&D grant funding from EU and national programs (SATHScale €2.4M, I3FLOAT, FLOWIND, FLOAT&M, EuropeWave ACHIEVE, NRCAN). Go-to-market is exclusively enterprise field sales: each commercial deployment is a bespoke, project-based co-development with large offshore wind developers, utilities, and energy companies. Beyond the core platform, the company runs the DemoSATH Lab initiative covering environmental monitoring (DTBird, eDNA), biodiversity (SATH Reef Unit), integrated multi-trophic aquaculture (AQUASATH), AI-driven monitoring (MoorIA), and LIDAR-based control (LIFTCTRL). The strategic agenda is the commercial-scale-up from the 2MW DemoSATH demonstration toward 14-16 MW turbine designs, with active geographic expansion across the European Atlantic Arc, Japan, Canada, and the Mediterranean.

The company serves primary segments of offshore wind developers and utilities seeking deep-water deployment solutions, public-sector research institutions and EU/national R&D consortia, regional industrial supply chains for concrete manufacturing and marine construction, and port authorities providing assembly and logistics infrastructure. Strategic tier-1 co-development partnerships with RWE (Germany) and KEPCO (Japan) anchor the DemoSATH demonstration, while consortium leadership in I3FLOAT, FLOWIND, and EuropeWave positions Saitec within the EU floating wind innovation ecosystem.

Name

Saitec Offshore Technologies

Legal name

Saitec Offshore Technologies S.L.

Website

https://saitec-offshore.com

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

11–50 employees

Short description

Saitec Offshore Technologies develops the proprietary SATH (Swinging Around Twin Hull) prestressed concrete floating platform for offshore wind turbines, serving enterprise utilities, offshore wind developers, and EU R&D consortia. Co-developed with RWE and KEPCO, it operates DemoSATH, Spain's first grid-connected floating wind turbine.

Ownership category

akta.pro rank

Product category

Floating Offshore Wind Foundations

SIC

Services-Commercial Physical & Biological Research (8731)

akta.pro primary industry

Offshore Wind Power Generation (Floating) (EUACAFAC)

akta.pro secondary industries

Offshore Wind Substructures & Marine Engineering (Monopiles, Jackets, Floating) (EUAMACAE), Marine & Offshore Wind BOP Construction (Foundations, Cables, Ports, Installation Support) (EUAMAFAI), Advanced Wind Technology R&D (Floating Offshore, Airborne Wind, New Rotor/Blade Concepts) (EUAMAOAB)

Keywords

• Floating offshore wind
• Concrete floating platforms
• Floating wind foundations
• Offshore wind technology
• Mooring systems engineering

Headquarters

HQ city

Leiva

HQ country

Spain

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. SATH Platform Licensing and Technology Sales: Saitec Offshore Technologies generates revenue through licensing its SATH floating platform technology to offshore wind developers, utilities, and project developers for commercial-scale deployments. Revenue is derived from technology licensing fees, engineering services, and intellectual property royalties associated with the SATH concept.
2. Co-Development and Joint Venture Revenue: The company enters co-development agreements with large energy companies (e.g., RWE, KEPCO) on demonstration and commercial projects, receiving development fees, milestone payments, and revenue sharing arrangements for successful deployments.
3. R&D and Grant Funding: Saitec Offshore participates in publicly funded R&D consortia (EU, national, regional) receiving grants for technology development, commercialization acceleration, and innovation projects such as SATHScale (€2.4M EU funding), I3FLOAT, FLOWIND, FLOAT&M, and others.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Saitec Offshore Technologies designs, develops and licenses the SATH (Swinging Around Twin Hull) floating platform, a prestressed concrete twin-hull floating foundation with single-point mooring for utility-scale offshore wind turbines. The company validates the technology through scaled tank tests, environmental studies and full-scale demonstrators (DemoSATH, BlueSATH), and operates R&D programs in environmental monitoring, O&M, digital twins and AI-based mooring integrity management.

Product overview

Saitec Offshore Technologies offers the SATH (Swinging Around Twin Hull) floating offshore wind platform as its core product—a patented prestressed concrete twin-hull technology that enables wind turbines to operate in deep waters. The product portfolio centers on the SATH platform technology, supported by demonstration projects including DemoSATH (full-scale 2MW prototype) and BlueSATH (first continental Spain installation), alongside a growing suite of research and innovation modules under the DemoSATH Lab initiative. These include AI-powered monitoring solutions (MoorIA), LIDAR-based control systems (LIFTCTRL), advanced O&M research (FLOWIND, FLOAT&M), aquaculture integration (AQUASATH), and European collaborative projects (I3FLOAT, SATHScale, ACHIEVE). The architecture follows a platform-plus-research initiative model where the commercial SATH technology is validated through demonstration projects, while ongoing innovation projects continuously enhance capabilities in areas such as digital twins, environmental monitoring, structural optimization, and sustainability.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• DemoSATH operated at full 2MW capacity for continuous 24-hour periods, validating stable energy production even in harsh marine conditions.
• +5 more outcomes

Named customers3 records

Segments4 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability6 records

Feature13 records

Partnerships

17 partnerships are on record, tiered minor and core.

• Aquitaine Wind Energy Alliance / Nouvelle-Aquitaine Development and Innovation Agency (ADI)minorStrategic or Co-development Partner · 12 March 2026Saitec participated in the Franco-Spanish MRE Summit co-organized by ADI, Aquitaine Blue Energies, Blue Sign, and BasqueEnergy Cluster, exploring cross-border cooperation for floating wind deployment in the Atlantic Arc.
• France Energies Marines (FEM)coreTechnology or Integration · 17 June 2025France Energies Marines is a research partner in the I3FLOAT project, working with Saitec on the DemoSATH platform to develop digital twin capabilities and predictive modeling using real-time sensor data, aero-servo-hydroelastic modeling, and AI/neural network techniques. FEM integration of sensors in real-time enhances simulation fidelity for SATH platform optimization.
• AventacoreTechnology or Integration · 17 June 2025Aventa is a technical partner in the I3FLOAT project, responsible for the Inter Array Cable (IAC) System innovation work package. Aventa conducts meteo-oceanic analysis, electrical design of cable cross-sections, and mooring configuration design for installation sites in Galicia (150m depth) and the Gulf of Lion (65m depth).
• IngZerocoreTechnology or Integration · 17 June 2025IngZero partners with Saitec in the I3FLOAT project to develop fiber-reinforced concrete innovations for the SATH platform, including structural analysis, fatigue analysis, industrialization processes, and economic comparative studies between fiber-reinforced concrete, high-strength concrete, and steel for specific platform components.
• I3FLOAT Consortium (24 partners, 8 countries)coreStrategic or Co-development Partner · 17 June 2025I3FLOAT is a 36-month European project co-funded by the EU under I3-2024-INV1, involving 24 partners across 8 countries including Saitec and Saitec Engineering. The project tests pioneering floating wind technologies in real environments to reduce LCOE and build a robust interregional supply chain. Saitec leads Pilot 1, focused on SATH platform innovations including cable systems, digital twins, and fiber-reinforced concrete.
• FLOWIND Consortium (Sener, Graphenea, Ditrel, Mugape, CDA Bilbao)coreStrategic or Co-development Partner · 21 January 2025The FLOWIND project is a collaborative consortium led by Saitec focusing on advanced O&M solutions for floating wind energy. Partners include Sener (engineering), Graphenea (graphene-based coatings), Ditrel (monitoring systems), Mugape, CDA Bilbao, and research entities Tecnalia, Mondragon Unibertsitatea, Ikerlan, and Cidetec. The consortium develops lifecycle cost assessment tools, dynamic monitoring systems for mooring and cables, and advanced concrete formulations.
• France Energies MarinescoreStrategic or Co-development Partner · 12 December 2023Collaboration agreement with France Energies Marines to gather knowledge and enhance expertise in operating and contributing to the energy transition through the DemoSATH project, with focus on digital twin and environmental research.
• RWE Offshore WindcoreStrategic or Co-development Partner · 1 August 2023RWE Offshore Wind (Germany) is a co-developer and strategic partner in the DemoSATH project, collaborating with Saitec on the design, construction, and operation of Spain's first grid-connected floating wind turbine. RWE contributes international project development expertise, capital, and operational capabilities to the partnership. RWE and Saitec jointly selected Ferrovial for manufacturing and assembly of the platform.
• The Kansai Electric Power Co. Inc. (KEPCO)coreStrategic or Co-development Partner · 1 August 2023KEPCO (Japan) joined the DemoSATH project as a strategic partner and co-investor, bringing international collaboration and capital to the floating wind demonstration. KEPCO contributes to the project's international credibility and provides a gateway to the Japanese floating wind market, where deep-water offshore wind is a national priority.
• EuropeWave PCP ProgrammecoreStrategic or Co-development Partner · 17 October 2022Saitec's SATH technology was selected for Phase 2 and subsequently Phase 3 (ACHIEVE project) of the EuropeWave Pre-Commercial Procurement Programme, a competitive EU program to advance wave energy converter technologies. The selection validates the technology's readiness for commercial deployment.
• Waterford Energy Services Inc. (WESI)minorStrategic or Co-development Partner · 11 May 2021WESI and Saitec Offshore Technologies were jointly awarded funding by the Government of Canada (NRCAN Emissions Reduction Fund) for floating wind innovation projects, demonstrating international collaborative R&D capabilities.
• FerrovialcoreImplementation/ SI/ Consulting Partner · 28 October 2020Ferrovial, a leading global infrastructure operator, was selected by Saitec and RWE for the manufacturing and assembly of the DemoSATH platform. Ferrovial's construction and infrastructure expertise was essential for the fabrication of the concrete floating structure at the Port of Bilbao.
• BiMEP (Biscay Marine Energy Platform)coreStrategic or Co-development Partner · 12 June 2020Saitec Offshore Technologies and BiMEP signed an agreement to secure the offshore site for installing Spain's first grid-connected floating wind turbine (DemoSATH).
• UnivergyminorStrategic or Co-development Partner · 15 February 2018Univergy and Saitec cooperated to develop floating wind projects in Japan, combining Saitec's SATH technology with Univergy's local project development capabilities in the Asian market.
• WorleyminorImplementation/ SI/ Consulting PartnerWorley carried out the accessibility design assessment for the DemoSATH floating wind project, evaluating design accessibility to ensure operability and maintenance feasibility of the platform.
• Industry Associations (WindEurope, AEE, WFO, BasqueEnergy Cluster, REOLTEC, Sea of Innovation Cantabria, APPA)minorStrategic or Co-development PartnerSaitec Offshore Technologies holds memberships in key industry associations including WindEurope, Asociación Empresarial Eólica (AEE), World Forum Offshore Wind (WFO), Offshore Wind Industry Basque Country, Cluster Energía Basque Energy Cluster, REOLTEC, Sea of Innovation Cantabria Cluster, and APPA (Asociación de empresas de energía renovable). These memberships provide industry visibility, advocacy, and networking.
• BiMEP (Biscay Marine Energy Platform)coreTechnology or IntegrationBiMEP is the offshore test site operator providing the deployment location for DemoSATH at Armintza, Basque Country, in 85m water depth approximately 2 miles offshore. BiMEP provides the marine infrastructure, permits, and monitoring coordination essential to DemoSATH's operations.

Scale indicators10 records

Recent moves6 records

Expansion highlights6 records

Market position

Strengths4 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/saitec-offshore-technologies

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds1 record

Investors1 record

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M&A

Investments

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

Frequently asked questions about Saitec Offshore Technologies