Overview and operational challenges of Jawa Bali power system

Indonesia has several isolated power system grids due to the geographical condition which consist thousands of island spread along We Island in the west to the Merauke Island in the east. This condition constraints this country to seize its electricity ratio. Indonesia recorded 89.1 % of electrification ratio with 216 TWh of energy sales in 2016. Jawa Bali Power System, the largest power system grid in Indonesia, accounts for about 75% of Indonesia's total electrical energy consumption. This paper will explore the Jawa Bali Power System in Indonesia. Besides that, the operational performance and the challenges will be discussed as well.