PT Medco Energi Internasional Tbk, together with its subsidiaries, explores for and produces oil and gas in Indonesia, Asia, Africa, the Middle East, the United States of America, and Europe. It operates through Exploration and Production of Oil and Gas; Services; Power; Chemicals; and Trading segments. The company operates production, development, and exploration blocks in the Riau Islands, South Sumatra, Central Sulawesi, Aceh, East Java, and Kalimantan in Indonesia; and holds oil and gas assets in Thailand, Oman, Yemen, Mexico, and Tanzania. It also operates drilling and workover rigs, and gas pipelines; and provides support services for oil and gas activities, and security services. In addition, the company is involved in copper and gold mining operations in Sumbawa, Nusa Tenggara; and production and trade of chemicals. Further, it operates as an independent power producer in the gas-fired, mini-hydro, geothermal, and solar PV sectors; and provides operation and maintenance services. The company was formerly known as PT Medco Energi Corporation and changed its name to PT Medco Energi Internasional Tbk in 2000. The company founded in 1980 and is headquartered in Jakarta, Indonesia. PT Medco Energi Internasional Tbk is a subsidiary of Pt Medco Daya Abadi Lestari.