Swissgrid Tunnel - Bâtiaz - Le Verney Wired Connection

Tunnel

Work description

Undergrounding of the 380 kV cables crossing the Rhone plain. Connection of the new La Bâtiaz substation to the 380 kV Chamoson-Romanel overhead line.

Construction of two shafts with watertight bulkheads and jetting pad, tunnel of about 1.2 km by pipe pusher with Ø 3.0 m TBM slurry, and supply and laying of 12 380 kV cables.

Work in total undertaking includes civil engineering design as well as electrical part. The project is executed in BIM. Client Swissgrid.

  • 1,200 m: length of tunnel
  • 12 cables of 380kV
  • 20 m: depth
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Duration: 02.2021 - In corso

Amount: CHF 29,000,000 (excluding VAT)

Customer: Swissgrid SA, Aarau

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Additional content

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Liaison câblée souterraine La Bâtiaz – Le Verney

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