The project brings together an important set of geothermal project developers and financiers. The project company, PT Supreme Energy Muara Laboh, is a joint venture consisting of the Indonesian geothermal power developer, PT Supreme Energy; the Japanese trading and investment company, Sumitomo Corporation; and global energy leader ENGIE. In addition to ADB, financing is being provided by the Japan Bank for International Cooperation and a set of commercial banks under a guarantee from Nippon Export and Investment Insurance.