Wave+Energy

=__Wave Energy__=
 * Wave power devices extract energy directly from the surface motion of ocean waves or from pressure fluctuations below the surface.

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However, there are other types of wave technologies:
 * **Point absorber** is a floating structure with components that move relative to each other due to wave action (e.g., a floating buoy inside a fixed cylinder). The relative motion is used to drive electromechanical or hydraulic energy converters.
 * Overtopping devices have reservoirs that are filled by incoming waves to levels above the average surrounding ocean. The water is then released, and gravity causes it to fall back toward the ocean surface. The energy of the falling water is used to turn hydro turbines. Specially built **seagoing vessels** can also capture the energy of offshore waves. These floating platforms create electricity by funneling waves through internal turbines and then back into the sea.
 * The **oscillating water column** is a form of terminator in which water enters through a subsurface opening into a chamber with air trapped above it. The wave action causes the captured water column to move up and down like a piston to force the air though an opening connected to a turbine

> > **Disadvantages:**
 * Advantages:**
 * It reduces the dependence upon fossil fuels
 * Tidal and wave energy is free, renewable, and clean source of energy
 * It produces clean electricity, with no production of greenhouse gas or pollution.
 * Tidal and wave energy generation and consumption creates no liquid or solid pollution
 * Depends on the waves - sometimes you'll get loads of energy, sometimes almost nothing.
 * Needs a suitable site, where waves are consistently strong.
 * Some designs are noisy. But then again, so are waves, so any noise is unlikely to be a problem.
 * Must be able to withstand very rough weather