Developers Shell and Innogy, and floating wind outfit Stiesdal Offshore Technologies (SOT) have taken a final investment decision on deploying a prototype of the TetraSpar concept.
The €18m ($20.3m) demonstrator project, to be installed off western Norway in 2020, aims to take the design – made up of a modular tubular steel main structure with a suspended keel, and first reported in Recharge – toward commercialisation by proving its viability in an ultra-harsh maritime environment.
