Design aspects of offshore platform for combining of marine current and offshore wind energy conversion plant in Indonesia

Indonesia as a maritime country, its territory consists of 2/3 part of ocean waters and over than 17.000 islands spreading all the country. The waters consist of huge ocean energy which can be converted into others useful energy. The government had developed of a policy of energy diversification for increasing of the use of energy alternative. The policy is to anticipate the depletion of fuel energy where the oil resources estimated will be depleted around 20 years more. The authors selected marine current and offshore wind as the alternatives energy from the ocean. The paper begins to introduce the potential site of the marine current throughout the Indonesia sea waters. Then the paper reviews of the development of marine energy conversion system. Selecting the type of offshore platform and the marine turbine is given to choose the type which is applicable in the potential site. Having selected the type, the paper is trying to discusses for combining of two types of energies (marine current and offshore wind) on one unit of platform. The design of the platform supporting of two energies is presented to end the paper. The paper was entirely constructed based on literature study.