The idea isn't new. It's been tried before in Norway, unfortunately not very successful: https://en.wikipedia.org/wiki/Statkraft_osmotic_power_prototype_in_Hur

The idea isn't new. It's been tried before in Norway, unfortunately not very successful: https://en.wikipedia.org/wiki/Statkraft_osmotic_power_prototype_in_Hurum https://en.wikipedia.org/wiki/Statkraft_osmotic_power_protot...