Eight transmission system operators from the countries bordering the Baltic Sea have presented <a href="https://www.50hertz.com/Portals/1/Dokumente/Medien/Positionspapiere/250401_BOGI_expert_paper_final.pdf?ver=SgoCEiy-I4XhHuBTxx8g2g%3d%3d" target="_blank">an expert-paper</a> outlining an increased cross-border co-operation in the field of offshore wind energy and the related grid infrastructure, with a special focus on the security of critical undersea cables.