Tunnel for the new Risvollelva Hydro Power Plant is completed
Updated: Sep 26, 2021
Length: 800 m
Drilled diameter: 1200 mm
Diameter steel lining: 1067 mm.
The tunnel has been completed in three separate operations:
Directional drilling diameter 400 mm
Reaming to 1200 mm
Installation of lining
More clean renewable energy is now available from the owner of the plant – Sunnhordland Kraftlag.