PT Adaro Energy Tbk. is an Indonesian energy group that focuses on coal mining through subsidiaries. The principal location is at Tabalong district in South Kalimantan, where the subsidiary PT Adaro Indonesia operates the largest single-site coal mine in the southern hemisphere. Adaro Energy operates under a first-generation CCA (coal co-operation agreement) with the Indonesian Government valid until 2022.
Adaro Energy Wikipedia
In 1976 the Indonesian Mines Department divided East and South Kalimantan into eight coal blocks and invited tenders for these blocks. Spanish state-owned enterprise Enadimsa (empresa nacional adaro investigaciones mineras s.a.) bid for Block 8 in the Tanjung district of South Kalimantan. Adaro Indonesia’s Coal Cooperation Agreement (CCA) was signed on Nov. 2, 1982. In 1989 a consortium of Australian and Indonesian companies purchased 80% of Adaro Indonesia from Enadimsa.