Pelamis P2

One of the most tested designs for gathering energy from waves is the Pelamis wave energy converter, which is installed in Portugal and the U.K. Below what's visible here are three hydraulic motors driven by the motion of the waves to generate electricity. This device, called the P2, is able to generate 750 kilowatts. The idea is to chain several together to make wave farms able to generate tens of megawatts of power, enough to supply thousands of homes.

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