Chief Operating Officer
Irfan Zainuddin
Former President Director of PT Pertamina Geothermal Energy (PGE)
Graduated from the Mining Faculty of Sriwijaya University Palembang, South Sumatra. He joined Pertamina the largest Energy Company in Indonesia since September 1989. During his career at Pertamina, he held many important and strategic positions including Vice President Partnership of PT Pertamina Exploration and Production (PEP) 2011-2013, Vice President Upstream Strategic Planning operation and evaluation PT Pertamina (Persero) 2013-2015 and as President Director of PT Pertamina Geothermal Energy (PGE) 2015-2018.
Project Manager
Dirgo Rahayu
Former Geothermal engineer for PT Pertamina.
DIRGO has a degree in Chemical Engineering. He has wede and extensive experience in Geothermal Industry. Before joining the group he worked in Pertamina holding important positions, namely, as General service Manager and Process Engineer of Kamojang Project for the geothermal construction of the FCRS (Fluid collection & Reinjection System) & 60 MW Power Plant, as General Manager of the Lahendong geothermal area for drilling, 80 MW steam field operations and drilling, preparation for the construction of FCRS and 40 MW Power Plant, and as General Manager of the Ulubelu geothermal area for drilling, construction of the FCRS & power Plant and field operations and generation of 220 MW power plant
Legal Division
Supriyadi
Former legal vice president for PT Pertamina.
Member of the Association of International Petroleum Negotiators, and Perhimpunan Advokat Indonesia(PERADI)
SUPRIYADI has a degree in Master of Laws (LL.M.), Faculty of Law, University of Southampton, United Kingdom. His job experience includes wide areas of upstream of oil and gas law, as well as geothermal energy. His expertise includes various types of upstream oil and gas, as well as geothermal energy, contracts and negotiations, among others: Joint Bidding Agreement, Sale and Purchase Agreement (SPA), Production Sharing Contract (PSC), Joint Operation Contract (JOC) and Energy Sale Contract (ESC), Joint Operating Agreement (JOA), Unitization Agreement, Gas Sale Agreement, Project Financing, and EPC Contracts. In addition, he has been widely involved in dispute settlements, both in courts (including through arbitrations nationally and internationally) and out of court settlements of those areas. He began his legal career in Oil and Gas as a legal counsel of PT Pertamina (Persero) 2002, his last position as Legal Vice President of PT Pertamina Hulu Energi (2018).
Government Relation
Posma Sitompul
Former Government Auditor to Pertamina Oil and Gas.
Former President Director for PT Wisma Nusantara
POSMA has a degree in Master of Science Accounting and Business International, University of Illinois Urbana-Champagne, USA. Before joining the group, he was a Government Auditor to Pertamina Oil and Gas (Cost Recovery). He also worked as President Director, PT Wisma Nusantara International that owned by Indonesia and Japan (Mitsui). He has wide and extensive experience in High Speed Railway.
Operating Support
Lanny Tambajong
Former Chevron Indonesia.
LANNY graduated from University of Indonesia, in Gas & Petrochemical Engineering. Before joining the gorup she worked in Earth Science Operations, Exploration Team, Jakarta, Chevron Indonesia Company as Well Log Analyst / Petrophysicist for 5 years. In 2015, she joined Petrophysics Organization Capability (PPOC) program in Chevron Energy Technology Company, Houston, Texas, USA. She has wide experience in Sub Surface Data Management as she spent 9 years as G&G Data Management analyst in West Seno Asset Team, Balikpapan – Jakarta, Chevron Indonesia Co.
Executive Secretary & Accounting
Sefty Lestari
SEFTY has a degree in Master of Arts, Political Science, Kokushikan University, Tokyo, Japan. She joined the group since 2015 to support high level executives and management in an administrative capacity and finance support. She is fluent in Japanese and English.