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.
Pacific Northwest National Laboratory shows 100% safe fish passage for hydro turbine.
A new study published in the North American Journal of Fisheries Management shows safe downstream passage of juvenile alewife (river herring) through Natel’s modern FishSafe hydro turbine.