Energy Source: Wave Power

Wave power harnesses the energy of waves and converts it into electricity. Wave power devices harness energy directly from surface wave motion or from pressure fluctuations below the surface. Wave-power rich areas of the world include the western coasts of Scotland, northern Canada, southern Africa, Australia, and the northeastern and northwestern coasts of the United States.

Capturing and Using Wave Power

Several methods of extracting energy from waves are being researched. One of the most effective ways is using the rise and fall of wave action to compress air in a chamber. The compression and release of air pressure is used to drive a turbine and a generator.

Benefits

  • Once installed, wave systems should not be expensive to operate or maintain.
  • Offshore locations are unobtrusive and the environmental and social impact should be low.

Challenges

  • To be reliable, wave energy needs an appropriate site with consistently strong wave action.
  • Equipment must be durable enough to withstand rough conditions and salt water.
  • Wave energy systems could significantly alter flow patterns of sediment on the ocean floor.

Global Status and Potential

Wave power from the world's oceans could supply up to 2 terawatts of electricity.According to the World Energy Council, wave power could supply 10% of the world's electricity at current supply levels, if harnessed appropriately.  According to the U.S. Department of Energy, renewable energy analysts believe there is enough energy in the ocean waves to provide up to two terawatts of electricity. 

Canadian Status and Potential

BC Hydro is investigating the potential of wave power on Canada’s west coast.

Links for more information

General Information

 

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