For electricity generation in 2040, fossil fuels are expected to account for greater than 35% of the total energy consumption. Environmental problems, including air pollution, global warming, and severe weather, due to colossal fossil oil use are gradually being discussed. However, estimates of theoretically usable wave energy capacity on a worldwide scale are widely recorded between 20 TWh/year. The estimated worldwide demand in 2014 for electrical energy reached 19,800 TWh/year with a worldwide wave energy reserve of the same extent. Wave energy sources have been evaluated at global and regional levels and the volume of wave energy available is high enough to stimulate significant interest in exploitation. The theoretical potential of wave energy is shown in Table 1.
Wave energy seems to have the second-highest potential of all ocean clean energy sources.
One of the factors that makes waves desirable for harvest is that they have tremendous power density compared to many renewable energy sources. The sea surface waves provide a large amount of green energy and could make an enormous difference to global energy demands going toward the sustainable world.
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