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UK to Denmark interconnector gets £850M sign off

interconnector tunnel

National Grid has confirmed it is to invest £850M in the Viking Link interconnector between the UK and Denmark.

It means contractors for the 760km, 1.4GW HVDC interconnector between Bicker Fen in England and Revsing in Denmark, will be appointed next year. The project will cost a total of £1.1bn. The tender process is ongoing for the contracts for the detailed design, engineering, procurement, manufacture, installation, construction, testing, commissioning, spares provision, operational handover and maintenance of the interconnector.

The project is a 50/50 joint venture between National Grid and Energinet, which approved its share of the investment last year. The interconnector is due to be completed in 2023, but still needs to get all the required consents.

National Grid says the interconnector could earn it in the region of £100M a year once it is fully commissioned.

The client currently has three interconnectors under construction: Nemo Link between the UK and Belgium which will be finished next year, IFA2 between the UK and France due for completion in 2021 and North Sea Link between the UK and Norway (pictured above) which is on track for commissioning in 2021/22.

Its half year results statement said: “On Nemo Link, energisation and station testing is underway, and we expect full testing to start in December, and commissioning before the end of March next year. On IFA2, we completed the horizontal drilling through the cliffs at Chilling on the south coast, with ducts installed ready to receive the six AC cables in the new year. On North Sea Link, we completed the first two cable laying campaigns, with 260 kilometres buried under the seabed so far and an additional 130km manufactured and transported to Norway ready to lay in 2019.”

Meanwhile, the client says that work on Feeder 9, a tunnelling project to replace a 5.4km pipeline under the Humber Estuary, is on track for completion in 2020. Skanska is working as the main civils contractor for the project, in a joint venture with A.hak and tunnelling firm Porr. In September Ofgem gave National Grid £111M to fund the project.

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