Construction of two new power stations in rock, to replace three, old power stations (total production of approx 340 GWh). The work includes; 6 kilometer tunnels of cross-section 20 to 36 sq.m., two power stations, intakes, two bridges, outlets and portal building together with other river-preventive work.

Both stations carries out an environmental upgrade in the vicinity by replacing old cables and pipes. This will have a positive influence on both the recreation area and the fish population in the neighbourhood to Høyanger.