This has been around in Switzerland for a while. Sadly, the company running it (the first of its kind here) went bankrupt https://www.srf.ch/news/regional/aarg

This has been around in Switzerland for a while. Sadly, the company running it (the first of its kind here) went bankrupt https://www.srf.ch/news/regional/aargau-solothurn/wasserwirbel-kraftwerk-schoeftland-kritik-am-konkurs https://www.srf.ch/news/regional/aargau-solothurn/wasserwirb...