Abstrack:
Indonesia is the world?s fourth most populous nation, with 240 million people spread over a large archipelago of more than 922 permanently islands, which is a unique feature that has a significant impact on their electricity systems. The population within Indonesia is concentrated, with about 80% living on Java-Madura-Bali (known as Jamali) (IEA, 2008). At least, three out of the five biggest city in Indonesia reside in Jamali, namely Jakarta which is a Capital City of Indonesia, Surabaya and Bandung.