Efficiency rating refers to the measurement of how effectively a system converts available energy into usable power. In the context of tidal stream energy conversion, it quantifies the effectiveness of turbines or generators in harnessing the kinetic energy of moving water into electrical energy. A higher efficiency rating indicates that a larger proportion of the energy from tidal streams is converted into usable electricity, which is crucial for optimizing energy output and ensuring the viability of tidal energy systems.
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