Indonesia is estimated to have the largest geothermal potential in the world – 27,000 megawatts, or roughly 40 percent of total global geothermal resources. But currently, only 4 percent of that potential is being used to produce electricity.
Even at the current level of development, however, Indonesia is the third largest geothermal producer in the world in terms of installed capacity, following the United States and the Philippines.
Work is now underway on two developments that are being financed with World Bank assistance, at Ulubelu in South Sumatra and Lahendong in North Sulawesi. These two fields together will develop 150 MWe of new power generation capacity – enough to bring electricity to up to an additional one million households.