The “Aachen Liège Electricity Grid Overlay” (ALEGrO) will be the first direct interconnector of the German and Belgian electricity grids. Its transmission capacity of 1,000MW is going to significantly increase cross-border electricity flows and security of supply in the regions surrounding the new converter stations at the respective ALEGrO end points, Niederzier in Germany and Lixhe in Belgium. The European Project of Common Interest (PCI) is jointly being implemented by TSCNET shareholder Amprion, one of the four German transmission system operators (TSOs), and the Belgian TSO Elia.
In the summer of 2019, several teams were working simultaneously at different points along the 41km-long ALEGrO section in Germany on the installation of the conduit system for the underground cables. Underground cabling is used exclusively for the entire German-Belgian power bridge. Due to the dry summer, construction work on the DC link has progressed rapidly: 60 percent of the cable conduits have already been completed. Amprion is now beginning to pull the 320kV cables successively into the conduits, initially in Niederzier, where the construction of the new ALEGrO converter plant is also progressing well.