Gallery STAR 1
Gallery STAR 1
November 2020
Headquarters 75015 Paris, France

STAR - A semi-submersible floating system providing access to offshore winds in deep maritime areas

STAR is a semi-submersible floating system for floating offshore wind. Floating offshore wind turbines harness the energy of offshore winds in deep maritime areas farther from the coast, which are powerful and constant. Unlike fixed-foundation wind turbines that are supported by a base, which is directly set on the seabed using a gravity foundation, this Solution is based on a floating structure in concrete, steel or a steel/concrete hybrid combination fixed to the seabed by an anchoring system that controls its movements. Compared to fixed-foundation wind turbines, this innovative technology overcomes the constraints of deep-water installation and is able to produce renewable energy farther from the coast with a low visual impact. The Solution is designed to be competitive, produced in series and easily operated. It can be adapted to the specificities of the operating site and local industrial ecosystems.

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Key features

  • Carbon payback time in around 1 year
  • Largely made of recyclable material like steel


  • Designed for a 25 year service life
  • LCOE forecasted 40-50 €/MWh by 2030
  • Already selected for pre-commercial project

Categories of Application

Maturity Stage

  • Medium and large scale commercialization
  • Small scale commercialization
  • Initial market commercialization
  • Prototype testing in the real world
  • Prototype testing 1:1 in the lab

Looking For

Activity Region

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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.