Tunnel for the new Risvollelva Hydro Power Plant is completed

Length: 800 m

Drilled diameter: 1200 mm

Diameter steel lining: 1067 mm.

The tunnel has been completed in three separate operations:

1. Directional drilling diameter 400 mm

2. Reaming to 1200 mm

3. Installation of lining

More clean renewable energy is now available from the owner of the plant – Sunnhordland Kraftlag.