innogy considers it very important to ensure its generation facilities are environmentally friendly. That’s why we constantly invest in R&D in areas such as hydropower stations, often in conjunction with partner entities. At the Unkelmühle power station, for example, we are working with the NRW state government on a pilot project for fish-friendly facilities.
Protecting fish around hydropower stations
Although fish ladders and fish lifts largely have the task of helping fish bypass hydropower stations under control, we still need to study in greater depth just how fish can move safely from the headwaters of a power station to the tailwaters.
Screening systems ahead of the power station inflow prevent the fish from swimming into the turbines. Many hydropower stations already use a bypass system to ensure a safe descent into the tailwaters.
But how do the fish get there? And how do they behave ahead of the various systems designed to protect them? These are the questions that we are investigating as part of the OVeR project (German: orientation behaviour upstream of screens), which is being performed in collaboration with the Office for Environmental Planning, Waterways Management and Fisheries (BUGeFi) and the University of Aachen.
Trials are being carried out with different fish species in a purpose-built water channel. We hope these will show us how the fish can be guided to the bypass, and also the effects of different screen designs.
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innogy provides numerous options for an efficient and comfortable supply of electricity from renewable sources. We are also active in the following sectors.