With the commissioning of BorWin3, Siemens has handed over the fifth North Sea grid connection to its customer TenneT. After completion of successful test runs, the German/Dutch grid operator accepted the project. Siemens was responsible for the grid connection system including an onshore converter station. The grid connections HelWin1 and HelWin2, BorWin2, SylWin1, and BorWin3 – for which Siemens supplied all the technology for direct current transmission – are thus now in commercial operation and are transmitting power. Siemens was awarded the contract for BorWin3 in the spring of 2014. Being the fifth North Sea grid connection, it provides power to over a million German households. In July 2017 Siemens won the order for the grid connection DolWin6, which is scheduled to go into operation in 2023. A total of almost six million households will be supplied with electricity generated from wind power via these six links.