POWER-GEN Asia 2018

Potential Development on Distributed Generation in Small Islands: Case Study on 3x1 MW Gas Engine Power Plant (Room Garuda 9, 1st Floor)

Developing a large-scale centralized power plant in an archipelagic country such as Indonesia is indeed facing many constraints. The geographical consideration is one of the natural constraints on electrifying the small islands, especially the islands that are located in remote area. However, by means of the new generation technology nowadays, including the distributed generation technology, electrifying the small islands tends to be easier as it does not need to be connected to the main grid network system. Bawean Island is an example of distributed generation development in Indonesia for small islands electrification. The island has 8x500 KVA diesel engine and the transmission system to distribute the electricity through Medium Voltage Network of 20 kiloVolt (kV). In order to meet the electricity demand growth, PJB as PLN subsidiary was appointed to develop 3x1 MW gas engine power plant by applying green energy concept. The plant is also designed to use compressed natural gas (CNG) as fuels in order to be more cost-effective compared to use liquid natural gas (LNG). Due to the electricity demand highly rises every year on this island, PJB is currently proposing to increase the capacity of the plant with adding additional 2x1 MW by considering the use of latest technology, including hybrid technology. The development stage is conducted with a feasibility study to increase project viability through geographical analysis, technical assessment, financial assessment, environmental impact assessment, risk, and mitigation assessment along with permit and license approval. Therefore, this paper presents analysis and strategy for the distributed generation development in Indonesia for small island electrification to be more efficient, reliable and cost-effective by referring to Bawean Island case.