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TenneT records 21 pct increase in offshore wind energy transmission

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In the first half of 2020, the amount of wind energy transmitted onshore by the transmission system operator TenneT from the North Sea rose to 11.51 terawatt-hours. This corresponds to an increase of 21.1 percent compared to the first half of 2019 (9.51 TWh).

Power transmission from the North Sea accounts for a good 15.6 percent of total wind power generation in Germany, which reached 73.7 terawatt-hours in the first half of 2020.

“The expansion and integration of offshore wind energy is of central importance for the European energy transition. With Borssele alpha and – from mid-August – Borssele beta, we have now also successfully completed the first two offshore connections in the Dutch North Sea. We are making consistent progress in the key areas of innovation, standardisation and cost efficiency. Ever since TenneT set the standard for plastic-insulated direct current cables at 320 kilovolts (kV) in the offshore sector around ten years ago, we have been defining a new global benchmark for the future with our 525-kV direct current subsea cable system and its transmission capacity of two gigawatts (GW).”

TenneT COO Tim Meyerjürgens.

This development programme is aimed at creating a standardised cable system that TenneT will be able to use in the five projects BalWin1, BalWin2, BalWin3 (German North Sea) and IJmuiden Ver alpha and beta (Dutch North Sea) by 2030, as well as in future projects with the same power and voltage. This will reduce costs, increase the security of supply and, at the same time, minimise the environmental impact.     

“We have an investment programme of around 20 billion euros earmarked for connecting offshore wind energy in the Netherlands and Germany by 2030. More than half of it will be assigned to the new 2-gigawatt standard. TenneT currently has 14 offshore grid connections in operation, two of them in the Dutch North Sea (including Borssele beta) and twelve in the German North Sea. At 7,132 megawatts (MW) in the German North Sea alone, TenneT’s connection capacity already exceeds the federal government’s target for 2020, which is 6.5 gigawatts for the North and Baltic Seas in total. In the Dutch North Sea, TenneT is set to achieve 1,400 megawatts of connection capacity by mid-August 2020. By 2030, TenneT’s offshore grid connection capacity will increase to around 17 gigawatts in Germany and 9.6 gigawatts in the Netherlands.”

TenneT is also following the various hydrogen-related projects and initiatives with great interest and welcomes them – especially when it comes to the clarification of the legal framework.

As far as the North Sea Wind Power Hubs proposed by TenneT are concerned, coupling power to gas/hydrogen has been explicitly included in the concept right from the start.

The North Sea Wind Power Hub project is currently dealing intensively with the issue of power to gas/hydrogen and the timely installation of hubs, and is pushing ahead consistently with these topics and studies.

Arnes Biogradlija
Creative Content Director at EnergyNews.Biz

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