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Energy

ProFOSS: floating electrical substation for offshore wind energy

RINA participates in a research project on offshore energy harvesting infrastructure, supporting the definition of regulatory and technical requirements and the verification of engineering documentation

Key info
R&D
Location
Genoa, Italy
Period
June 2025 - December 2026
Project coordinator
Fincantieri
Funding scheme
Fondi del Ministero dell’Ambiente e della Sicurezza Energetica, MASE - CUP: F53D25007510008

Challenge

The constant demand for energy and the need to identify new supply methods consistent with decarbonisation processes make Floating Fffshore Sub-Stations a promising technology, albeit one still under development.

The main operational challenge lies in the movements caused by weather and sea conditions, such as wind and wave action. These phenomena can affect the operation of high-voltage electrical equipment, typically installed on fixed structures, and the stability of subsea power cables.

 
Consequently, the development of offshore floating wind farms requires infrastructure capable of efficiently collecting, transforming, and transmitting the electricity generated by the wind turbines to shore.
 
The project ProFOSS project was launched to address these challenges by defining a modular and scalable concept for a floating electrical substation, an integrated offshore energy system designed to transform the generated wind energy and connect it to the National Transmission Grid. The project will integrate: 
  • The floating platform and the associated mooring system.
  • The topside, based on HVAC (High Voltage Alternating Current) technology, including the electrical equipment and auxiliary systems required for energy conversion. 
  • Monitoring, control, telecommunication, and safety systems.

Applied expertise

In the ProFOSS project, RINA is responsible for defining the overall regulatory framework and the reference technical standards applicable to the floating electrical substation. Activities include identifying the national and international regulations, codes, and standards applicable to the various phases of the system's lifecycle, namely design, fabrication, transport and installation, operation, and decommissioning. 

RINA also verifies the technical and engineering documentation produced during the definition of the initial concept (design basis) and the development of the modular concept (integration of engineering systems, techno-economic analysis) for FOSS. Specifically, the document review aims to verify compliance with regulatory requirements and applicable standards, ensure consistency among the various design documents, and identify any observations, requests for clarification, or non-conformities.

Finally, RINA contributes to defining safety requirements, commensurate with standards for unmanned structures, and identifying the technical standards applicable to the various system components in a marine environment for a period of no less than twenty-five years.. 

Impact

ProFOSS will contribute to developing the knowledge and tools required to create floating electrical substations for offshore wind farms.

Regarding energy supply, the modular architecture will ensure flexibility and scalability to meet varying power requirements ranging from 500 MW to 1,000 MW.

The project will make it possible to identify key technical and operational challenges and to optimise, in an integrated manner, the interactions between the floating platform, topside, electrical equipment, mooring systems, dynamic cables, and control systems.

The project’s outcomes will support the future development of floating offshore wind farms, particularly in areas characterised by deep waters and significant distances from the coast. Furthermore, it will help build national expertise in the floating offshore wind sector and prepare the technical, regulatory, and methodological knowledge needed for future industrial developments.

Consortium

1. Fincantieri S.p.A. 2. RINA Consulting S.p.A. 3. Università degli Studi di Napoli Federico II 4. Università degli Studi di Trieste

Contact us
Alberto Ghigo