International Journal of ASRO Volume 11, Number 07, pp. 68-76 Jan 2020 POTENTIAL OF SEA FLOW ENERGY AS A RENEWABLE ENERGY SOURCE (RENEWABLE ENERGY) ON THE CAPALULU HOLIDAY, NORTH MALUKU Joni Widjayanto 1 , Adi Bandono 2 , I Made Jiwa Astika 3 , Agung Tresnadi 4 Indonesia Defense University, Unhan Jakarta Indonesian Naval Technology College, STTAL Surabaya ABSTRACT One of the biggest obstacles to development progress in Eastern Indonesia is the unavailability of electricity, especially on small island islands. The potential of ocean currents is one of the most renewable sources of energy considering that the majority of Eastern Indonesia is the ocean and has not been utilized optimally. The purpose of writing this paper is to reference the calculation of ocean currents for Indonesian coastal islands that have minimal electricity. This research method uses literature studies on the morphology of the flow velocity and wind that occurs in the Capalulu Strait and the calculation of the potential of electrical energy in the Capalulu Strait so that the results of this calculation are used as one of the renewable energy methods that are able to meet the electricity needs of island islands. which has not been electrified in Indonesia, especially in the Sula Islands, North Maluku. Keywords: Electric Energy, Ocean Flow Turbine, Renewable Energy, Strait of Capalulu 1. INTRODUCTION As an archipelagic country, Indonesia is known as a country that has abundant natural potential. Not only from the potential of land, Indonesian waters also become a potential that can become an alternative energy source. The Indonesian Ocean can be used as an alternative energy substitute for electricity. Indonesian territorial waters have strong ocean currents that store the potential that can be fully utilized to generate electricity. The occurrence of currents in the ocean is caused by two main factors, namely internal factors and external factors. Internal factors such as differences in sea water density, horizontal pressure gradient and water layer friction. While external factors such as the attraction of the sun and the moon. Which is influenced by sea floor resistance and coriolis force, differences in air pressure, gravitational force, tectonic force and wind (Gross, 1990). Tides are one part of the external factor in the occurrence of currents. Tidal currents are usually found in narrow straits that are mostly found in the strait of islands in Eastern Indonesia. And the capalulu strait is one of the straits with the strongest tidal currents in Indonesia. The Capalulu Strait is located in the Sula Archipelago District, North Maluku Province. The strait is flanked by the islands of Mangole and Taliabu. As in the capalulu strait which is on two land surfaces, namely the mainland islands Mangole and Taliabu. While for the two big waters, the Pacific Ocean and Indian Ocean. This narrow strait turns out to be one of the straits with the strongest ocean currents in Indonesia. According to the Center for Research and Development of Marine Geology, Ministry of Energy and Mineral Resources, this point does have strong ocean currents. The site also states that the current strength of the capalulu strait reaches 5 m / s (18 Km / J or 9.72 Knots / Hour), in contrast to the strait on the islands of southeast Nusa Tenggara which reaches 2.5 to 3 meters per second (9Km / Hour - 4.85 Knots to 10.8Km / J - 5.83 Knots / Hour).