The Indonesian energy ministry anticipates an investment requirement of $15 billion (£12.43 billion) to meet its target of reaching 7.2 GW of geothermal power capacity by 2025 from less than 2 GW currently. At present, coal makes up around 60 per cent of the country’s energy mix versus 5 per cent from geothermal power. In this regard, PT Pertamina Geothermal Energy, a unit of the state energy company PT Pertamina, is aiming to invest $2.7 billion in geothermal power through 2026. Further, the company aims to increase its geothermal capacity to 1.1 GW by 2026 from the current 672 MW.