It started blasting new feeder tunnels from the two lakes Holsbruvatn and Rausdøla to the old hydropower station at Tyin, Norway.

By building tunnels from Holsbruvatn and Rausdøla to the old power station at Tyin, Hydro will be able to use water resources that have not previously been used.

Holsbruvatn and Rausdøla are located below the water intake reservoir for the new Tyin power station, which replaced the old plant in 2004.

By resuming production at two of the generators in the old Tyin power station, Hydro will increase production by 84 GWh, with the total power production from Tyin exceeding 1600GWh.