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Electricity from ocean currents

How can we produce electricity using currents in ocean?

Asked Saurabh Pathak

Answer:

Electricty can be generated from ocean through various means, mainly

  • Ocean Thermal Energy Devices
  • Tidal Energy
  • Energy of waves and
  • Ocean Currents

The energy extraction from ocean currents is somewhat analogous to energy from winds. (ref http://www.boem.gov/Renewable-Energy-Program/Renewable-Energy-Guide/Ocean-Current-Energy.aspx)

Ocean current technology is still in its early stage of development.

For ocean current energy to be utilized successfully at a commercial scale, a number of engineering and technical challenges need to be addressed, including:

  •  avoidance of cavitations (bubble formation);
  •  prevention of marine growth buildup;
  •  reliability (since maintenance costs are potentially high); and
  •  corrosion resistance.
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