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The United States is developing four ocean-energy technologies which offer significant promise. These are: ocean thermal energy conversion (OTEC), wave power, ocean currents, and salinity gradients. The major funding emphasis has been in OTEC because of its potential, state of development, and availability of the resource to U.S. shores. This paper summarizes the technological accomplishments, major findings, remaining problems and action planned. The areas of major concern pertain to the cost-effective designs for the platform, mooring system, cold water pipe, and electrical umbilical cable and the successful system integration of these components into a working plant that can be readily deployed and operated at sea over a design life of 30 years.