1.4GW Viking Link goes online

National Grid’s new 1400MW Viking Link electricity interconnector became operational this afternoon, transporting power between the UK and Denmark.

The world’s longest land and subsea interconnector stretches for 475 miles to join Bicker Fen substation in Lincolnshire with Revsing substation in southern Jutland, Denmark.

The £1.7bn project is a joint venture between National Grid and Danish system operator Energinet, and has the capacity to transport enough electricity for up to 2.5m UK homes, bringing over £500m of cumulative savings for UK consumers over the next decade due to cheaper imported power from Denmark, said the UK network operator.

Construction on Viking Link, National Grid’s sixth interconnector, started in 2019, with more than four million working hours spent to get to this point. 

The company’s interconnector business is run by National Grid Ventures (NGV), which operates outside of the company’s core regulated businesses in the UK and US. NGV develops, operates and invests in energy projects, technologies and partnerships to accelerate the development of clean energy.

Initially, Viking Link will be operating at a capacity of 800MW before increasing over time to 1.4GW. National Grid and Energinet will be working together to bring the asset up to full capacity over the coming year. 

In its first year of operation Viking Link is expected to save approximately 600,000 tonnes of carbon emissions – this is equivalent to taking roughly 280,000 cars off the road.

 “This record-breaking new link is a fantastic example of engineering and collaboration with our partner, Energinet,” said NGV president Katie Jackson.

“As we deploy more wind power to meet our climate and energy security targets, connections to our neighbouring countries will play a vital role increasing security of supply and reducing prices for consumers.

“Stretching further across land and sea than any of our existing links, it connects the UK to clean, green Danish energy, improving security of supply and bringing huge carbon and cost savings for UK consumers.”

Viking Link has a converter station on each end of the cable where the power is transformed into the correct frequency before being transported onto each country’s transmission systems.

Principal contractor Siemens Energy built the converter station in the UK while Energinet built the Danish facility. Siemens Energy designed, installed and commissioned the electrical assets on both sides.

The HVDC offshore cable was manufactured and laid by Prysmian Group. The wire was laid on the seabed using a custom-made vessel The Leonardo Da Vinci and was then buried using Asso trenchers.

Prysmian Group manufactured the HVDC land line which was installed by Balfour Beatty, while the Danish land section was manufactured by NKT and installed by Monck.

The UK land cable was made up of 118 sections stretching for 67km between Bicker Fen and Sutton-on-Sea where the subsea cable begins. It was connected to the UK’s National Transmission Network by National Grid Electricity Transmission at the existing Bicker Fen substation.  

“Viking Link is an achievement for both Denmark and the UK, and consumers in both countries will benefit from this infrastructure for many years to come,” said managing director of National Grid Interconnectors Rebecca Sedler.

“The hard work and collaboration of our teams, accounting for more than four million labour hours, highlights National Grid’s dedication to the UK’s clean energy transition.”

UK Energy Security Secretary Claire Coutinho added: “Great news today as the new Viking Link interconnector starts to transport energy between Denmark and the UK, under the North Sea. 

“The 475-mile cable is the longest land and subsea electricity cable in the world and will provide cleaner, cheaper more secure energy to power up to 2.5m homes in the UK.

“It will help British families save £500m on their bills over the next decade, while cutting emissions.”

Earlier this year National Grid announced joint plans with TenneT for a new 1.8GW interconnector between the UK and The Netherlands, called LionLink. 

The project would not only join the two countries but also connect to offshore wind generation. It would be the second link between the two countries and is expected to be operational in the early 2030s.

A second new link called Nautilus, is also in the planning phase with the potential to connect with Belgium.

sourced by: reNEWS.biz

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