PT Supreme Energy Rantau Dedap

Pre-Feasibility Study

PT Supreme Energy has completed the pre-feasibility study of the Rantau Dedap geothermal prospect in March 2009 as assigned by the Minister of Energy and Mineral Resources.
The study successfully estimated the possible reserves based on the conceptual model constructed by the integration of geological, geophysical, geochemical data and prior wells.
Geotechnical data was added in order to identify any constraints or hazards for development of the field. The earth science data acquired during the pre-feasibility studies were used to estimate resource size of the prospects.


Project Updates

The concession for the Rantau Dedap has been awarded to the Supreme Energy – GDF Suez Consortium in early December 2010 and the Mining Area License was granted to the project company PT Supreme Energy Rantau Dedap (SERD). SERD have got the price approval and assignment from the Minister of Energy and Mineral Resources through assignment letter No. 5834/26/MEM.L/2011 September 30, 2011.

The exploration program has started since 2011. It has completed the Airborne topographic survey and  civil engineering study. Heat loss survey, report and the geoscientific interpretation as well have been completed by the end of February 2012.

On November 12, 2012 Rantau Dedap project has entered the Power Purchase Agreement (PPA) signing with Indonesian state-owned electricity utility Perusahaan Listrik Negara (PLN). The signing was done by President & CEO of SERD, Supramu Santosa and President Director of PT PLN, Nur Pamudji, witnessed by Minister of Energy and Mineral Resources, Jero Wacik. Signing of PPA marks a key milestone as it defines the contractual rights and obligations of the parties during the exploration phase, construction phase and operation phase – conditions which are necessary to start exploration drilling activities.

By the end of 2013, about 14 km of road has already been opened. Land acquisition has reached about 94 %  of the overall land required for the project.

The First Spud-in Exploration Drilling RD-B1 Geothermal Working Area Rantau Dedap was conducted on  February 3rd 2014. RD-B1 drilling has been completed at the end of March and then continued with the drilling of the second well, RD-B2 that has been competed in May 2014 and continued with RD -C1 that has been completed in September 2014. Well Drilling RD-B1, RD-B2, RD-C1 is a series of 5-7 drilling exploration wells in the Rantau Dedap Geothermal Working Area, to prove the existence of geothermal resources, is sufficient to build a geothermal power plant with the capacity of 220 MW.