PT Supreme Energy Rantau Dedap (SERD) has signed a loan agreement worth US$540 million from Japan Bank for International Cooperation (JBIC), Asian Development Bank and a number of international commercial banks to finance the R antau Dedap geothermal power plant in South Sumatera.SERD is joint venture company of ENGIE of France, Japan’s Marubeni Corp., Tohoku Electric Power and local firm PT Supreme Energy. Rantau Dedap geothermal project is located in Muara Enim, Lahat and Pagar Alam in South Sumatera.