About the Llŷr Project

The initial focus of the Floventis Energy Llŷr project will primarily be on the development of two 100MW demonstration projects using two different floating offshore wind platform technologies,

Each of these technologies will have the following key attributes:

  • Consist of turbines with a rating of between 12 to 20 MW per turbine.
  • Up to 8 turbines per project.
  • Each project grouping of turbines will have inter-array cables connecting to a central offshore substation (one offshore substation for each project).
  • Each project will have up to two offshore export cables to landfall.
  • The projects will have a minimum operational life of 25 years.
  • The installation has a target date of 2026/27

Project Location

The sites are approximately 45 kilometres from shore and consist of two 50 km2 “areas of search” for the location of the wind farms. The eventual extent of area occupied will be reduced following the appropriate site investigation and detailed design work.

Wind Turbine Generator

The turbine manufacturer is still to be decided but it is anticipated that the wind turbine will have the following characteristics:

Key Data and Dimensions of the Llŷr Project Turbines
Number of blades3
Direction of RotationClockwise
Rotor Diameter (incl. 10m nose cone)Up to 255 metres
Length of rotorUp to 122.5 metres
Blade swept areaUp to 51,071 m2
Hub heightUp to 156 m HAT
Tip height above water level Up to 280 m HAT
Blade Clearance to water levelA minimum of 25 metres
Rated Capacityup to 20 MW
ConverterFull size
StructureTubular Steel Tower


The turbines will integrate with a floating platform, of either a semisubmersible or barge design, utilising a tension leg or catenary mooring system to secure the platform to the seabed. The mooring radius may vary between 50 to 800 meters depending on the mooring arrangement used.

Export Cable Routes


The offshore and onshore cables routes are currently under consideration and will be identified following the appropriate consultation with stakeholders. It is Floventis’s ambition to work with the other developers in the Celtic Sea to achieve a cabling solution that minimises environmental and stakeholder concerns, potentially sharing/co-locating cable routes should it be technically and commercially viable.  Current landfall options under consideration for the export cable route include Freshwater Bay, Angle Bay, West Angle Bay and Angle Peninsula South Coast.