PT. Sumber Tenaga Alam Resources (STAR) is a sister company of PT. Sumber Tenaga Alam (STA). STAR, based in Jakarta, is actively involved in coal trading and operates a branch office in Samarinda, East Kalimantan, to facilitate its operational activities.

in order to maintain continuity of supply and consistent quality, STAR collaborates with multiple companies holding coal mining concessions in East Kalimantan, North Kalimantan, and Sumatera.

STAR serves as a reliable coal supplier to various foreign and local entities, including both trading companies and end users, for both domestic consumption and export purposes.