Within the framework of the EU LIFE CONNECTS project, UNIPER­ – Sydkraft Hydropower AB, one of Europe’s largest and most innovative energy providers, awarded the Austrian company Hydro-­Connect contracts to manufacture and deliver a double-screw-turbine as a bidirectional fish ladder. The superordinate goal of the LIFE CONNECTS project is to improve the general conservation status of target species, and enhance ecological conditions for them along 150 km of seven target rivers. Hydro-Connect provided the entire hydro-technology infrastructure, including the electric drives and hydraulic steel construction for the River Emån. The double-screw-turbine was devised to enable the main species of fish – salmon of up to 120 cm in length – to migrate up a head of 5.5 metres and a dotation of at least 800 l/s.

photo credits: Uniper