In September 2021, Natel conducted formal testing with PNNL on a cohort of American eel passing through the RHT test unit operating at 670 rpm under 10 m of hydraulic head. Following the test the eels were monitored for 48 hours with 100% survival.
An examination of using a conically arranged, cantilevered electrified bar rack (Center Sender) to guide fish, unharmed, through hydropower facilities.
How big can a fish be and still pass through the Restoration Hydro Turbine (RHT) safely? Pretty big!
Climate change website The Cool Down praised Natel's FishSafe™ turbine designs, calling them "airbag[s] for fish."