Swissgrid to replace Grynau–Siebnen line with new 380 kV line
- Location
- Between Grynau and Siebnen, Lake Zurich/Linth Plain region (municipalities of Uznach and Tuggen, cantons of St. Gallen and Schwyz) · 🇨🇭 Switzerland
- Project
- Grynau–Siebnen grid line replacement (220 kV to 380 kV overhead line)
- Investment
- CHF 11.1 million
- Status
- In planning (approval procedure underway; partial section already completed)
Swissgrid is replacing the existing 220 kV overhead line between Grynau and Siebnen with a new 380 kV line spanning 5.2 km with 14 new pylons (52-83 m tall), closing a 5 km bottleneck in the transmission grid. The section between the Siebnen substation and pylon No. 915 has already been upgraded; the plan approval dossier submitted in 2020 is being re-displayed for public review, with a decision expected in 2026. Construction is planned for 2028/2029, with commissioning and dismantling of the old line scheduled for 2030; the investment volume is CHF 11.1 million.
Source: swissgrid.ch ↗ · Archived copy ↗
Evidence: one source · archived copy saved · How well sourced is Eurotrack?
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