How Does It Work?

Ocean thermal energy conversion is process that uses the difference between the warmer surface water and the deeper cold water of the ocean to produce electricity2. The warm surface water is used to vaporize a fluid with a low boiling point (such as ammonia). The vapor then expands and as result spins a turbine with a generator and produces electricity. The vapor is then cooled by the cold deep sea water and as result is condensed back to a liquid. This allows the fluid to be reused in this seemingly simple and continuous cycle1. The ideal temperature range is about 41°F for the cold water and about 77°F for the warm water.