International competitive bids are invited to enter into a four year framework agreement (October 6, 2017-December 31, 2022) for undertaking the environmental monitoring and forest monitoring services for the construction 65/132/220/380 kV Chamoson–Chippis overhead line; disassembly of 65-125-132 kV Chamoson–Chippis overhead lines; 380 kV Bâtiaz–Verney underground link (construction of a micro-tunnel and laying of electric cables between the Bâtiaz substation and the THT line at Verney).

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