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Low-cost substructure system

Bottom-fixed offshore turbine prototype that can be installed safely, simply and without cranes

May 2018

Low-cost substructure system

Bottom-fixed offshore turbine prototype that can be installed safely, simply and without cranes

  • World Alliance Member
  • Featured Solution
  • Labelled Solution
Label Date May 31, 2018
From Spain
Maturity stage TRL 7 - Prototype testing in the real world

The telescopic configuration of the tower brings down the center of gravity during the towed self-floating transport, allowing the bottom foundation platform to temporarily act as a self-stable floating barge over which the complete system can be pre-assembled onshore. This reduces the complexity and risk associated with installing the towers in unpredictable offshore environments. Once ballasted to rest on the seabed, the tower can be lifted to its final position by means of cables and conventional off-the-shelf heavy-lift strand jacks which are used to lift each tower level successively. All works are carried out from a single access platform.

The Environmental Benefits

  • 30% carbon footprint reduction
  • Solutions for the clear market trend towards increase water depth (>35m) and increased turbine size (5-8MW and 10+ MW coming in the very near future)
  • Can be towed into position using readily-available tugboats instead of scarce and expensive dedicated transportation vessels
  • Low impact on seabed (morphology, sediments), moderate impact on marine ecosystem

The Financial Benefits

  • 30% cost reduction relative to conventional methods: lowers the barriers to entry and makes the cost of equity (COE) more affordable
  • Manufacturing and commercialising offshore wind turbines revitalises industrial sectors and increases employment rates.

Target client profile

Activity Region

  • Headquarters
  • Activity

Company Profile


Esteyco i civil an engineering consulting firm created in 1970. We provide engineering services and our own OW products.

Headquarters 28036 Madrid, España
Type Company
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Networking Partner

Horizon Results Platform - European Commission

The Horizon Results Platform is a new European Commission platform helping EU Research & Innovation funding beneficiaries to valorise their results with a view to creating socio-economic impact.

Solutions Associated 20
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The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances. The innovator ESTEYCO S.A. has asserted ownership of the intellectual property rights for images, videos, and content showcased above, affirming full and unrestricted usage rights, and has provided explicit permission for the Solar Impulse Foundation to publish such information designated as "public" in the application form.