Hydropower- Environmental Projects

Alden’s Environmental Engineering and Services department has substantial experience consulting with Hydropower facilities for licensing support, evaluations of fish survival and bypass efficiency, feasibility studies, habitat assessments, and examining exclusion of aquatic species from cooling water intake and discharges.

Recent project Summaries:

Alden Fish Friendly Turbine

With an increasing demand for renewable energy throughout the world, the ability to produce power while minimizing carbon dioxide emissions and other environmental impacts has become a driving force in the continued development of hydropower. 

A new hydropower technology that has the potential to meet power demands without impacting fish is the Alden turbine, which was developed through the U.S. Department of Energy’s (DOE) former Advanced Hydro Turbine Systems Program and with support from the Electric Power Research Institute (EPRI). The Alden turbine is designed to allow the safe passage of downstream migrating fish through an operating turbine. 

Given the high rates of turbine passage survival, the Alden turbine could be used to generate power using flows that are otherwise spilled over dams or through bypasses to meet fish passage or minimum flow criteria.


Alden Fish Friendly Turbine in the News

Fish-Friendly Turbine Making a Splash in Water Power - Energy.gov   Development Status of the Alden "Fish-Friendly" Turbine- HydroWorld


Hecker & Cook 2005