Oceans are an appealing target for renewable energy production. Waves produce 32,000 terawatt-hours of natural energy per year — for reference, the entire world uses around 23,000 terawatt-hours every year.

The advantages of wave power are clear. 【小题1】 Turbines produce electricity through the power of waves, making them a completely pollution-free, renewable energy source. And the amount of kinetic energy in a wave is huge that energy is used to produce electricity. There is also a lot of potential because many countries have access to an ocean that can help power their electric systems. Also, waves are hardly interrupted and almost always in movement. 【小题2】

But the disadvantages of wave energy are serious too. Building factories or electrical wires directly on the beach might prove challenging. 【小题3】 Local fishing zones could be affected or the factories could lead to more coastal erosion. High cost is a problem too. Wave power is a rising energy technology in the early stages of development, so calculating the costs is difficult. 【小题4】 Because constant movement can lead to more breaking, wave energy factories will most likely need regular and costly maintenance.

【小题5】 For many ocean-bordering countries, wave energy will be a great addition to the newable energy mix. The bottom line is that wave power has enormous global potential. However, the industry needs more funding and research to finalize the technology involved so that countries can begin adding wave energy to their renewable energy source.