TotalEnergies reduces wind costs with Semar’s mooring solution


Norway – TotalEnergies chose the Norwegian Semar Honeymooring solution to reduce floating wind costs and footprint on the seabed.

TotalEnergies’ future offshore wind projects in Norway and around the world are expected to benefit from the innovative mooring solution.

Offshore wind turbines that float have removed the depth constraints, but they have also raised the challenge of mooring that is both cost-effective and reliable. The mooring design is based on traditional mooring technologies for oil and gas floating structures. The Honeymooring technology enables new ways of applying well-proven mooring technology in new and more effective anchor-sharing configurations by connecting floating wind turbines in a “honeycomb” network.

Efficient solution

TotalEnergies believes that the Semar Honeymooring solution can meet this challenge by lowering the carbon footprint and impact on the seabed, lowering the cost of the mooring hardware and floating wind turbine structure by reducing peak loads of the mooring system, making marine operations more efficient and less costly, partly due to lower pre-tension and line weight in the mooring system, and allowing smaller, less expensive vessels to be used for marine operations.

TotalEnergies is already working on a portfolio of offshore wind projects with a total capacity of more than 6 gigawatts, two-thirds of which are bottom-fixed and one-third of which are floating. These projects are in the United Kingdom (Seagreen project, Outer Dowsing project, Erebus), South Korea (Bada project), Taiwan (Yunlin project), and France (Seagreen project, Outer Dowsing project, Erebus) (Eolmed project).