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Quantification of the Energy Potential from Tidal Streams for Rose Dhu Island, Georgia

PI: Francesco Fedele, Thorsten Stoesser and Kevin Haas (Georgia Institute of Technology)

Support: GA DNR Coastal Zone Management (through a Coastal Incentive Grant)

Timeframe: 2010 - 2012

Project Objectives:

  • Identify the hot spots (the migration of localized areas of maximum and minimum tidal currents) for high tidal stream energy potential via experiments and flow measurements as well as determine the hydrodynamics of the channels adjacent to Rose Dhu Island.
  • Quantify the current flow dynamics, turbulence structures, and their statistics via computational fluid dynamics simulations.
  • Estimate the maximum tidal stream power attainable through use of free-stream turbines.


  • Studies via experiments and flow measurements identified a hotspot for high tidal stream energy potential located on the west side of Rose Dhu Island.
  • Velocity and water level elevation time series data was recorded from a simulation model (for the month of Oct 2010) and used to estimate the annual power and future surface heights of the tidal streams surrounding Rose Dhu Island.
  • A tidal energy assessment was conducted in order to estimate the total theoretical kinetic power that can be extracted from the tidal streams surrounding Rose Dhu Island during a one year period. Using this method it was found that the total available power for transects in close proximity to the ‘hot spot’ of high current velocities was 3.2MW.


Two technical interchange seminars, at Rose Dhu and Tybee Islands were held to disseminate project results and findings, and discuss emerging ideas with folks from SCAD, local universities, the Skidaway Institute of Oceanography, and local engineering companies.

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This page was updated February 24, 2014