Gia talks about retrofitting existing hydro units, adding generation to non-powered dams, and installing the RHT in Africa in collaboration with MyHydro on POWER Magazine's podcast.
https://www.powermag.com/fish-friendly-hydro-natel-energy-is-proving-its-possible/
In this piece from DOE's Water Power Technologies Office Natel features as an example of a novel solution to improve downstream fish passage.