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This research for performance analysis of ocean water power plant to get design optimization based on research scenarios. The method used is experiment, by conducting a prototype analysis of the initial calculations to be included in the modeling simulation. through research scenarios to get the most optimal prototype performance. The results showed that (1) the greater the pontoon volume used, the greater the pontoon force produced, the pontoon force was not affected by the size of the pump diameter. (2) the larger the diameter of the pump used, the greater the discharge of water produced, the water discharge is not affected by the small volume of the pontoon, (3) the magnitude of the lift system to seawater is not affected by the size of the pump diameter but the size of the pontoon volume, the greater the pontoon volume used, the greater the lift power, (4) the greater the pontoon volume used, the turbine power The result will be even greater with the diameter of the pump, the larger the diameter of the pump used, the greater the turbine power produced. From the results of the study, it can be concluded that the optimal size uses 6 pontoons and 12 inch pump diameters.