Transmission system operator TenneT has unveiled a technological vision for a direct current high voltage (HVDC) far offshore wind grid hub in the German part of the North Sea that could provide 6GW of additional transmission capacity for wind at sea three years earlier than foreseen in current government grid development plans.

The wind power booster concept dubbed ‘LanWin Hub’ around 150 kilometres from the coast would consist of three adjacent and connected 2GW converter stations at sea that bundle incoming power lines from several wind farms with a combined capacity of 6GW and are linked via three HVDC lines to shore to converter stations on land.