Norway, UK complete world’s longest submarine power cable
Oslo: Britain and Norway have completed laying the world’s longest submarine power cable, which will carry wind and water power between the two countries, Norwegian power grid operator Statnett said on Tuesday.
The 720-kilometer (447-mile) North Sea Link – all but four kilometers underwater – connects Suldal, in the southwest of the Scandinavian country, to Blyth, near Newcastle.
The cable will supply UK wind power to Norway, which will send hydropower to the UK in return, with testing due to start on October 1.
The project would have cost between 1.5 billion and 2.0 billion euros (1.8 to 2.4 billion dollars).
“When the wind blows in England and wind power production is high, we in Norway will be able to buy cheap electricity from the British and leave the water in our dam tanks,” Thor Anders Nummedal said. , Statnett project manager.
“When there is little wind and a greater need for electricity in England, they in turn will be able to buy hydroelectric power from us,” he said in a statement.
The electrical capacity of the new cable is 1,400 megawatts.
The coupling of the two sections, built simultaneously on the British and Norwegian side, took place on Monday evening.
The construction had its share of technical challenges, including the need to build a special barge to run the cable under a Norwegian lake and the drilling of a 2.3 kilometer tunnel.
“This is an important cooperation between the UK and Norway to make the most of our shared renewable energy resources,” said Nigel Williams, project manager at UK operator National Grid, who, like Statnett, owns 50% of the project.
The cable takes the crown of Nordlink’s longest submarine cable, which only opened last month and connects Norway and Germany, measuring 623 kilometers, of which 516 kilometers are underwater.
Already connected to France, Belgium, the Netherlands and Ireland, the United Kingdom is planning new direct links with mainland countries, including a 765 kilometer link with Denmark with a 621 kilometer submarine section .