GMR Energy acquired a 100% equity stake in PT Barasentosa Lestari (PTBSL), Indonesia in September 2008 which has two coal blocks namely South block and North block in South Sumatra Province. The estimated reserves and resources are 282 million tonnes and 652 million tonnes in a concession area of about 24,000 Ha.
GMR Energy through its subsidiary GMR Coal Resources Pte Limited, Singapore acquired 30% equity stake in PT Golden Energy Mines Tbk (PT GEMS) in 2011. PT GEMS is engaged in the exploration, mining and marketing of thermal coal sourced from its coal mining concession areas covering 38,165 hectares in South and Central Kalimantan and Jambi (a province in Sumatra), Indonesia. PT GEMS owns the right to mine more than 2.1 billion tonnes of thermal coal resources, with coal reserves of about 640 million