Seven European organisations have teamed up to build a prototype ocean energy device that could power tropical islands with virtually limitless, consistent, renewable energy. The technology is called Ocean Thermal Energy Conversion (OTEC). It generates electricity by harnessing the temperature difference between sun-warmed surface water and the cold depths of the ocean. OTEC systems transfer heat from warm surface waters to evaporate a low-boiling point fluid like ammonia, creating steam that drives a turbine to produce electricity. As the vapour cools and condenses in contact with cold seawater pumped from the ocean’s depths, it completes the energy cycle. The technology…
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