Indonesia which comprise of more than 200 volcanoes located along Sumatra, Java, Bali and the islands of eastern Indonesia – known as The Ring of Fire - has given rise to large concentration of high temperature geothermal fields. A research from the Ministry of Energy & Mineral Resources mentioned that there are 253 geothermal-potential locations in the country.
With the combined high and low enthalpy geothermal resources, the potential estimated by Directorate General of Geology and Mineral Resources is more than 27,000 MW which makes Indonesia the country with the highest geothermal potential in the world. Indonesia has however, developed only less than a thousand MW of geothermal power. The Indonesian government is planning to utilize the big geothermal energy resource as a leading alternative energy to substitute fossils that may be fulfilling Indonesia’s growing demand for electric power during the 21st century.