NKT completes fast-track cable repair job at Beatrice offshore windfarm 

The repair was completed in just 38 days, after an unplanned transmission outage occurred in April 2025 on one of two of Beatrice’s Transmission Capital Partner (TCP) owned export cables bringing electricity to shore, reducing the site’s export capacity by 50%.

TCP and asset operator SSE Renewables, on behalf of owners Beatrice Offshore Windfarm Ltd, initiated a co-ordinated response, led by NKT.

The cable, which was not manufactured by NKT, was repaired using NKT’s adaptive rigid sea joint. Central to the swift turnkey repair were two of those joints, which were mobilised from NKT’s stock within days. These joints are designed to work with most high-voltage subsea AC cables from 110 kV to 300 kV, regardless of manufacturer, making them ideal for emergency repairs where compatible spare parts are unavailable or could not be used.

TCP asset manager Bruce Turner said, “A key enabler for the rapid repair was NKT’s ability to provide the adaptive rigid sea joints directly off the shelf, allowing the company to use NKT repair services on this asset expediting the repair programme in advance of other options available to us.”

The repair was executed using NKT’s cable handling system, which transforms standard construction vessels into fully equipped cable repair vessels. In this case, the system was deployed aboard Ocean Installer’s North Sea Giant.

The cable handling system was designed to have a compact footprint and broad cable compatibility, allowing for rapid mobilisation. Within just six days, North Sea Giant was mobilised in Eemshaven and later loaded with the customer’s spare cable.

The cable was re-energised by the end of July, fully restoring the transmission system’s export capacity.