Wave Power Efficiency - Calculating % for Sankey Diagram

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The efficiency of wave power is debated, with estimates ranging around 20-25%. Key considerations include whether efficiency is calculated based on the energy from waves hitting the device or all waves passing the site. The discussion also touches on comparing wave power to nuclear energy and emphasizes the importance of cost-effectiveness in power generation. Participants highlight that a less efficient unit spread over a large area may yield different results compared to a highly efficient but localized turbine. Ultimately, the focus should be on both efficiency and the cost of generated power.
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What do you think the Efficiency of Wave Power is in percentages?

Im trying to figure out the waste of the wave power and then trying to put it in a sankey diagram.

So for example:

25% Efficient
20% Thermal/Heat Energy​
Electrical energy in the TV -
25% Light Energy
30% Sound Energy​

If you get what I mean, that's what I would like to know for Wave Power and if possible, Nuclear Energy.

Thanks
 
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Normally efficency is quoted in terms of the amount of energy extracted form the fuel - it's not clear how you specify the efficency for a wind/wave power.
Do you count the proportion of the energy that is extracted form the wave that hits the machine, or all the waves that pass the site?
So a poor unit that only extracted 0.1% of the energy but was strung across the entire ocean would be better or worse than a single turbine that was more efficent but only intercepted a tiny part of the tidal stream

Really you should be more concerned about the cost of the generated power.
 
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