Share this article
The transmission system operators (TSOs), Energinet and 50Hertz, have placed a joint order with Siemens Energy for the construction and turnkey delivery of four converter stations and other technical components that will connect the Bornholm Energy Island project to the mainland grids of Denmark and Germany.
The major contract covers the design, completion, transport, installation, testing, and commissioning of the systems by the mid-2030s.
Two converter stations and the high-voltage alternating current (HVAC) station will be located at Aakirkeby on Bornholm, while the other stations will be built at Lindehøj on Zealand and in the Kemnitz municipality in the district of Vorpommern-Greifswald in Germany.
The power hub on Bornholm is intended to take on electricity from the future offshore wind farms off the coast, raise it to a DC voltage level of 525 kV, and then make it available to consumers in Germany and Denmark as needed via submarine and onshore cables.
“We would like to thank the Federal Government for clearing formerly unsolved regulatory issues so shortly after taking office. These issues included the question of liability in case no electricity can flow to Germany through an international offshore grid connection because of a disturbance or due to maintenance. Such a guarantee is the prerequisite for a successful tender for the wind farm areas off Bornholm in particular and, more generally, for an efficient offshore cross-linking between all countries bordering the North and Baltic Seas,” said Stefan Kapferer , Chief Executive Officer of 50Hertz.
“The amendment of the Energy Industry Act (Energiewirtschaftsgesetz, EnWG) by the Federal Cabinet now also enables the connection of an additional wind farm in Danish waters to the German extra high voltage grid through the Ostwind 4 grid connection project planned by 50Hertz.”