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Swiss Energy Recommends Underground Cable for Grimsel Line

A recommendation has been made by the monitoring group appointed by the Swiss Federal Office of Energy for the new extra-high voltage Grimsel line: it should be installed underground between Innertkirchen (BE) and Oberwald (VS), while an overhead line should only be planned for the short line section between Oberwald and Ulrichen (VS). The underground cable would be installed either in existing and newly constructed tunnels or in the multifunctional Grimsel railway tunnel.

2022-05-19 09:45:10
newsbot by content-proivder.ch GmbH
Quelle: Swiss Federal Council

The monitoring group appointed by the Swiss Federal Office of Energy has recommended that the new extra-high voltage Grimsel line should be installed underground between Innertkirchen and Oberwald, while an overhead line should only be planned for the short line section between Oberwald and Ulrichen. The underground cable would be installed in existing and newly constructed tunnels or in the multifunctional Grimsel railway tunnel.

The line, which runs over the Grimsel Pass and is over 60 years old, needs to be replaced and voltage should be increased from 220 kV to 380 kV. The Swiss Federal Office of Energy launched the procedure for the Innertkirchen-Ulrichen line and appointed a monitoring group in 2020, which examined and evaluated a total of six corridor variants.

The underground cable would relieve the villages of Guttannen, Obergesteln, and Ulrichen of current overhead lines while protecting national and international protected areas. The two variants for the underground cabling will cover a distance of around 23 kilometres.

The SFOE will make a final recommendation to the Federal Council and a decision will subsequently have to be made as to whether the tunnel variant or the multifunctional Grimsel railway tunnel variant will be implemented. Swissgrid is the national grid company responsible for operating the grid safely and without discrimination..

(Quelle:Swiss Federal Council modified with ChatGPT)

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Innertkirchen Swiss Energy Recommends Underground Cable Grimsel Line