The most recent Natel/Pacific Northwest National Laboratory test of 186 large rainbow trout measuring up to 500 mm (19. 7 inches) in length, found no meaningful difference between the fish passed through Natel’s 1.9 meter (roughly 6 feet) in diameter turbine and the control group, indicating that the RHT allows safe passage of some of the largest fish ever successfully passed through a compact hydro turbine.
2021 was a year of validation, bracketed by certifying our Freedom Falls plant as a Low Impact Hydro Installation, and by a suite of successful through-turbine fish passage tests in Q4.
Read the peer-reviewed paper documenting our work on the "Center Sender," an electrified cantilevered bar rack used as fish guidance module, in MDPI Water!