Finally, Ocean energy has vast potential as 70% (or three in four parts) of the earth is covered with water. Ocean energy is a term used to describe all forms of renewable energy derived from the sea. There are three basic ways to tap the ocean for its energy. We can use the ocean's waves, we can use the ocean's high and low tides, or we can use temperature differences in the water. Ocean energy is used widely. According to research, Tasmania, is particularly well gifted with wave energy resources. There are locations off its coast where the average wave power in water depths less than or equal to 50 m reach almost 35 kW/m, sending a total wave energy of 1100 GJ/m annually. Which held that Tasmania has the ability to produce energy from waves on a massive scale result from area of an island. The geographic location of Thailand, is coastal area The Gulf of Thailand and Andaman. Although Andaman coast is slope and characteristics of the wave as velocity, sizes and frequency, which was better than the Gulf of Thailand. The overall energy of the wave also has the potential medium to low. In Thailand, KMUTT has developed coast wave’s power generation by using the model in the laboratory. The suitable size was installed as a role model at the Sirindhorn International Environmental Park in Phetchaburi and Ao Manao in Narathiwat (Chaiwat and Duangrudee 2014). However, ocean energy is non-polluting energy that can be renewable. It has limitations in terms of cost and support the research so Thailand could have the expertise on ocean energy modelling but the technology to test these designs and models have yet to be developed.