The UK’s Sofia Offshore Wind Farm said it will most likely use horizontal directional drilling (HDD) to install its cables.

The UK’s Sofia Offshore Wind Farm said it will most likely use horizontal directional drilling (HDD) to install its cables.

Innogy’s Sofia Offshore Wind Farm is in the final phase of its six month pre-construction site investigation with a jack-up vessel ready to carry out surveys off the coast near Teesside in the UK.

The 29 m long vessel will carry out a series of boreholes that, together with earlier surveys, will gather data to feed into the planning of the final design and installation methodology for the main transmission cable.

Sofia Offshore Wind Farm Principal Geotechnical Engineer Andy Barwise said the information gathered in the borehole surveys will be used to fine tune the export cable’s design in addition to how it will be installed.

“A technique called HDD is likely to be used to install the cable underneath the intertidal area and the beach, and these surveys will help us refine that planned methodology,” said Mr Barwise.

From landfall, the onshore cables will transport the power to a new onshore converter station, with construction to commence in early 2021.

Once complete, the power generated by the wind farm will travel via a 220 km long electricity export cable from the offshore converter platform to shore, at its landfall between Redcar and Marske-by-the-Sea.

The Sofia Offshore Wind Farm is the largest project in Innogy’s development portfolio and one of the world’s biggest offshore wind farms.

For more information visit the Sofia Offshore Wind Farm website.https://sofiawindfarm.com/

The above article was originally published in Trenchless International, the official publication of the ISTT. For further information visit https://www.trenchlessinternational.com/

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