It's estimated that each island could produce 250MW, and that 50,000 “energy islands” could meet the world’s energy requirements. Additionally, as a byproduct of the OTEC process, two tons of fresh water per person per day would be produced.

A small portion of that water would go to vegetable gardens on the islands deck while the other 300,000 liters of water produced by each island would be loaded onto supertankers to be taken to shore.

The Guardian: Energy islands could use power of tropics, says innovator

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