Production of cheaper power based on temperature differences of the ocean

Another of Tesla's ideas to enable the production of cheaper power is based on the utilization of the temperature differences between that of the ocean surface water and that of water three miles below the surface. The basic idea is not in itself original with Dr. Tesla; he has, however, devised this interesting engineering scheme which makes the idea practicable. The above sketch shows how the icy waters from the ocean depths are brought in contact with the considerably warmer waters of the upper levels, creating steam power to operate great turbines, which, in turn, drive generators.