Uetliberg Tunnnel (CH): ILF helps Swissgrid turn up the voltage
moreSwissgrid has commissioned ILF, as part of the engineering consortium KiWa220 (@Suisseplan Bau, @Boess Gruppe), to plan and design the extension of the high-voltage line in the Zurich South area. In order to increase the security of electricity supply to the city of Zurich (CH) and the left side of Lake Zurich, the current line will be upgraded to 220 kilovolts (kV) and connected to the grid in the South.
In the first project section, the cable will be laid underground along the motorway. Subsequently, the cable will be pulled through the conduit blocks already in place in both tubes of the Uetliberg Tunnel. In the third project section, a new 2-km-long energy tunnel, with a diameter of approx. 4 m, will be driven using a tunnel boring machine.
