We are primarily tasked with providing power transmission services, system services and facilitating the energy market. Our core tasks follow from our appointment as grid operator under the Dutch 'Elektriciteitswet' (E-wet) and the German 'Energiewirtschaftsgesetz' (EnWG).
160 kilometers long and 900 megawatt DC connection
About the project
BorWin3 is the third project to be implemented by TenneT off the coast of Borkum using direct current technology in addition to the BorWin1 and BorWin2 grid connection projects. At the Emden/Ost site, TenneT set up a converter station with a transformer station to convert the energy generated at sea from direct current into three-phase current and feed it into the power grid from there. In total, a distance of 160 kilometers has to be bridged, whereby the wind power is first transported to Hamswehrum via a 130-kilometer long submarine cable to the west of Borkum and from there via a 30 kilometer long underground cable to Emden/East.
The foundation stone for the onshore converter station was laid in May 2016, and the station has been technically completed since 2018. The onshore cables were already laid in 2015, the last cable section was laid at sea in spring 2018. In September 2018, the offshore converter station manufactured in Dubai was transported to the North Sea and installed there in October (read more about its transport and installation in our German blog). Since August 2019, the 900 MW DC connection has been in operation.