Abstract
Over 70 000 000 people in Indonesia have no access to electricity. This study was carried out in Bawean Islands which are located in the Java Sea about 150 km North of Surabaya, the headquarters of East Java. The study to determine the energy services available in the Bawean Island was done through interviewing a random sample of 72 households in two villages namely Komalasa and Lebak. Based on the average monthly electricity consumption of the sampled households connected to the grid, a hybrid renewable energy based electrical supply system was designed for Gili Timur Island, one of the satellite islands around Bawean Island. The system was designed with the aid of a time step simulation software used to design and analyze hybrid power systems. A sensitivity analysis was also carried out on the optimum system to study the effects of variation in some of the system variables. HOMER suggests that for the expected peak load of 131 kW, an optimum system will consist of 150 kW from PV array, two wind turbines each rated 10 kW, a 75 kW diesel generator and batteries for storage.
Highlights
Over 70 000 000 people in Indonesia do not have access to electricity while over 40 % of households still rely on traditional biomass for cooking
The proposed hybrid power system will be based on a combination of renewable energy sources and diesel generator
The design and optimization of this system were done using Hybrid Optimization Model for Electric Renewables (HOMER) software; time step simulation software used for designing and analyzing the technical and financial viability of a power system based on different technologies and power sources
Summary
Over 70 000 000 people in Indonesia do not have access to electricity while over 40 % of households still rely on traditional biomass for cooking. Bawean Island is located in the Java Sea approximately 150 km North of Surabaya, the capital of East Java province [1] It is part of Gresik regency and is made up of two subdistricts namely Sangkapura and Tambak. This was achieved by choosing a random sample of 72 households in two villages in Sangkapura sub-district [1], Bawean Island and interviewing them through a set of open-ended and closed-ended questions as developed in the pre-designed questionnaire. Geothermal and biomass have great potential with only a small proportion having been developed
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