NKT has completed a turnkey repair of a 220 kV high-voltage AC subsea export cable linking the Beatrice offshore wind farm in the Scottish Moray Firth to the Aberdeenshire coast.
In April 2025, one of Beatrice’s Transmission Capital Partner (TCP)-owned export cables experienced an unplanned transmission outage, affecting renewable electricity supply to around 450,000 UK households and halving the site’s export capacity.
The cable, not manufactured by NKT, was repaired using NKT’s adaptive rigid sea joint (ARSJ). Two of these joints were mobilized from NKT’s stock within days, facilitating a speedy repair. These joints are compatible with most high-voltage subsea AC cables from 110 kV to 300 kV, irrespective of the manufacturer.
“A key enabler for the rapid repair was NKT’s ability to provide the adaptive rigid sea joints directly off the shelf, allowing us to use NKT repair services on this asset expediting the repair program in advance of other options available to us,” said Bruce Turner, Asset Manager from Transmission Capital Partners, the offshore transmission owner responsible for the cable infrastructure.
The repair utilized NKT’s cable-handling system, which converts standard construction vessels into fully equipped cable-repair vessels. In this instance, the system was deployed aboard the North Sea Giant from Ocean Installer.
The repair was completed in 38 days, with the cable re-energized by the end of July, fully restoring export capacity.
The 588 MW Beatrice offshore wind farm includes two export cables, each about 70 kilometers long, stretching from the offshore site to the landfall near Portgordon, Scotland.
Fully operational since 2019, the project is managed by SSE Renewables for a joint venture between SSE Renewables (40%), Red Rock Renewables (25%), The Renewables Infrastructure Group (17.5%), and Equitix (17.5%).
Original Story at www.offshorewind.biz