VAN D. BUCHER / SCIENCE PHOTO LIBRARY VAN D. BUCHER / SCIENCE PHOTO LIBRARY
Drawing of an Ocean Thermal Energy Conversion (OTEC) unit. OTEC produces energy from sunlight which falls on the ocean. Since 70% of the Earth's surface is covered with water, this is vast source for solar power. This 260 megawatt plant by Lockheed, drawing by D. Lyall.
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