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Corporate Information


Office 8, Level 18A
Jl. Jend. Sudirman Kav 52-53, SCBD
Jakarta Selatan 12190, Indonesia
Tel. +6221-2955-3570 Fax. +6221-2955-3571
Email: inquiry@penconsulting.com

Malaysia Office

Fyve Nine Ventures Sdn Bhd
63-2, Jalan Bangkung, Bukit Bandaraya
59100, Kuala Lumpur, Malaysia
Tel : +6 03 22017296 / + 603 2201 9959

Article of Association

No. 01, dated 11 Juni 2020
Notary Dr. Nuraini Zachman, SH, M.Hum
Rev 1 - No. 02, dated 14 Sept 2012
Notary Yenny Sutikno, SH. SpN.. M.H.
No. 15, dated 6 May 2002
Notary Sutjipto SH

Business Permit

SIUP No. 09114-04/PM/1.824271
Dated 23 Oct 2012 - Ministry of Industry & Trade, Republic of Indonesia

Tax No. (NPWP)


Member of INKINDO


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Board of Directors & Executives

Ir. Michael Sumarijanto, MBA - President Commissioner +

A PENConsulting co-founder, his broad educational background in Architecture and Urban Design combined with Building Science at the University of New South Wales and the University of Sydney from 1963-1971, brought him close to the issues of environmental and energy matters. After completing an MBA degree in Indonesia, he further acquired the senior executive international training program in Partnership and Financing Strategies for Local Development at the Harvard University Graduate School of Design in 1999. He was nominated to be the Vice Chairman of the Jakarta Urban Design Advisory Board for two terms by the Governor of Jakarta, to oversee the development of urban fabric of the city. Currently he is the Vice Chairman of the Indonesian Mining and Energy Community (Bimasena), the Chairman of the Supervisory Board of the Indonesian Institute of the Energy Economics, and sat at various professional associations in Architecture and Energy sectors.

Ir. Anton Wahjosoedibjo - Commissioners & Executive Advisor+

Co-founded PENConsulting after serving Chevron-Texaco's Indonesian subsidiaries for almost 40 years, about 37 years with PT Caltex Pacific Indonesia (CPI), an upstream oil and gas company,and three years with Amoseas Indonesia (AI), a power company. He held Senior Vice President & Deputy Managing Director position prior to retiring from CPI and was Executive Advisor with AI. Anton is a Vice Chairman of the Board of Directors and the Executive Director of the Indonesian Electrical Power Society (MKI). He is also a member of the National Board of Management of the Indonesian Society for Human Resources (PPSMI) and the Advisory Board of the Indonesian Power Engineers Association (IATKI). He is an Electrical Engineer from ITB (1962) and University of Pennsylvania (1966). He received Petroleum Professional Diploma from the International Petroleum Institute, Tulsa, Oklahoma (1976). He attended Executive Development Programs of the Stanford University (Palo Alto, CA) and the National University of Singapore (1983), Southern Methodist University (Senior Executive Program for Petroleum Industry - 1988), and Princeton University, New Jersey (1989).

Nedia Permata Hasan, BSc - Commissioner +

Upon graduation from Texas Christian University in Fort Worth, Texas with BSc degree in Environmental Science. She is a certified NEBOSH Safety Management Science and ISO 14001 Auditor. She spent her earlier career as sales engineer for oilfield specialty chemicals and oil well cement with PT Elnusa. Then she joined Kondur Petroleum SA for 11 years, rising her career from Environmental Engineer to Senior Health, Environment and Loss Control Officer. She joined Petronas Carigali Tanjung Jabung Ltd. in 2005 as Environmental Officers and has been promoted to Senior Health, Health, Environment and Security Manager since 2016.

Ir. Yanto Sianipar - President Director +

Former Senior Vice President of Policy, Government and Public Affairs (PGPA) of Chevron IndoAsia Business Unit (IBU), Chevron Asia Pacific Exploration & Production Company. The Chevron IBU encompasses Chevron's upstream activities in Indonesia and the Philippines. Yanto Sianipar started his career with Chevron in 1984 as Chemical Engineer and subsequently worked in a variety of positions, as he built his career with the Company, including Petroleum Engineer (1987 - 1993), Jakarta Exploration & Production Senior Coordinator (1993 - 1998), Team Manager Production and Team Manager Wellwork in Heavy Oil Duri (1998 - 2001), Manager Operational Excellence/Health Environment & Safety (2001 - 2005) and General Manager Sumatra Light South (2005 - 2009), before he was appointed as Vice President PGPA (2009 - 2013). Born in Pematang Siantar, North Sumatra, Indonesia in 1960, Yanto Sianipar holds a degree in chemical engineering from the Bandung Institute of Technology (ITB), Bandung, acquired in 1984. Yanto is actively involved in Indonesian Society of Petroleum Engineers (IATMI), Society of Petroleum Engineer (SPE) and ITB Alumnae Society.

Rachmat A. Abdoellah, BSc, MM - Executive Director +

Upon graduation in 1986 with Bachelor of Science degree from Petroleum Engineering, Colorado School of Mines and in 1992 with Master of Management degree in International Trade from University of Indonesia. He has 30+ years of experience in the Energy Industry started working for Unocal Indonesia Company in 1986 and had many assignments in Balikpapan, Jakarta, Houston handling subsurface projects, gas and LNG contract negotiations in Indonesia, LNG receiving terminal and Power Plant project development in Tamil Nadu, India. His last position in Unocal Indonesia Company in 2005 was Vice President of Gas Marketing and LNG and member of the Business Unit Management Committee. With the acquisition of Unocal by Chevron, he joined Chevron and held many positions as GM LNG, Gas Supply and Lifting, Vice President Planning and Technology, Deputy Sr. Vice President Asset Development, Sr. Consultant and GM East Kalimantan PSC. He retired in 2018 from Chevron Indonesia Company and has since being involved as Independent Energy Consultant in Singapore International Arbitration Court providing opinion on East Java gas contract dispute and in leading technology deployment in Oil and Gas Artificial Lift and Artificial Intelligent Machine learning. He is member of Society of Petroleum Engineer, Indonesian Society of Petroleum Engineer (IATMI) and Colorado School of Mines Alumni Association.

Harris H. Djauhari, BSc - Project Management Director +

Upon graduation from Petroleum Engineering, The University of Texas at Austin in 1985, and 30+ years of broad oil and gas experience with PT. Chevron Pacific Indonesia (CPI). Before retiring, Harris held the position of Sr. Vice President Operations in Rokan Block PSC of 300+ MBOEPD production from 108 Oil & Gas Fields. Harris's strengths are managing the light crude oil and heavy crude oil assets development, and management in the areas of Reservoir Engineering, Integrated Production System Optimization, Oil & Gas Field Management, Managing Workover Rig Operations, Artificial Lift and Production Stimulation Technology, Business Supports (Data Management, Business Planning, Quality Improvements, and Vice President of Human Resources in Chevron IndoAsia Business Unit), Project Management, and Senior Vice President Operations. Recently, Harris provides project execution consulting for Waterflood Projects Development and Optimization, Enhanced Oil Recovery (EOR) Application Screening of various reservoir characterization, and Strategic Decision Review as well as Oil Fields Environmental Clean-Up Projects. After retiring from CPI, Harris has held the position of Project Director in PT. Binaguna Adi Sejahtera (BAS), an Artificial Lift System Service Provider in 2016 - 2019, and the position of President Director in PT. Envirorisk Management Indonesia (ERMI), an Environment and Risk Management Consultant in 2017 - 2020. Harris held the Vice Chairman of Society of Petroleum Engineering - Riau Chapter in 1996 - 1998, and Chairman of Ikatan Ahli Teknik Minyak Indonesia (IATMI) - Riau Chapter in 1998 - 2003.

Bambang Pratesa, BA, MSc - Business Development Director+

With more than three decades global experience in Energy industry. Bambang is well-rounded hands-on experience in crisis management ranging from emergency response on Field Operations, Industrial Relations and Legal cases. Bambang has in-depth planning process ranging from world's largest steam flood project, Business Unit, Asia Pacific region to Corporate Head Office in California. Bambang spent his career in Chevron commencing 1987 as Development Geologist. He then contributed in various positions and functions such as Asset Management (1995 - 1997), Manager Corporate Planning (1999 - 2001), Strategic Planning Chevron Upstream (2001 - 2004), Manager Technology Supports (2004 - 2005), Manager Field Management (2005 - 2007), General Manager Operation Supports (2007 - 2011), Deputy VP Supply Change Management (2014 - 2015), VP External Affairs (2015 - 2017) and VP External Affairs (2017 - 2019). Bambang has been exposed to various special assignments such as Incident Commander (Labor Issues, Social Unrest and Oil Spills), Personnel Development Committee (Global Supply Chain Management), Industrial Relations Resolutions, Bioremediation Crisis Management, Transformation Leadership Facilitator (Organization and People), Chevron - Texaco Merger at Chevron Overseas Production International, Motor Vehicle Safety, Chevron Texaco Global, ChevronTexaco - Unocal Merger, Organization Restructurings and Environmental issues management. He is geologist by education, graduated from McKay School of Mines at Univ of Nevada, Reno. Then Bambang completed his Petroleum Geology graduate study at Royal School of Mines - Imperial College, London.

Dipl. Ing- Andri Doni IPU - Associate Director +

Upon graduation with Diploma Engineering for High Voltage and Electrical Equipment from Institut of Technische Hochschule Karlsruhe, Germany, he worked for Asea Brown Boveri (ABB) in Mannheim, Germany as a member of the transmission & distribution research team. He returned to Indonesia and worked as a member of the energy planning team at the Agency for the Assessment and Application of Technology (BPPT) from 1990 - 1993. He then held various management and executive positions, including Country Manager for Power Generation of Rolls Royce International 1999 - 2011 and founded and became CEO of PT Basra Hydro Power, an IPP in hydropower Projects, and PT Teknoprener Surya Energi since 2014 to presents. Andri has been Vice Chairman of the Indonesian Electrical Power Society (MKI) since 2015; he was Executive Director of MKI 2008 - 2014, and Director of International Business Cooperation of MKI 2011 - 2015. Andri is a certified professional engineer of the Indonesian Engineers Association. He was President of the CEPSI International Conference and Exhibition in Bali in 2012

Ir. Ali Herman Ibrahim MM - Associate Director +

Dr. Herman Darnel Ibrahim - Associate Director +

Kumar T Singam - Associate Director +

Kumar T. Singam currently establishing PEN Consulting presence in Malaysia for energy related cross border advisory work within the Asean region. He is actively promoting sustainable energy development and focuses on clean energy power generation and technologies targeted at the developing countries in the region. He is one of the founders of Fyve Nine Ventures a leading impact investing development company head quartered in Malaysia and sits on the board of several other venture companies in Asia and the Middle East. He has more than 22 years of experience focused mainly in the energy and infrastructure sectors covering project engineering through to M&A activities. He previously served as the Executive Director of a Malaysian based Clean Energy Fund for SE Asia, Camco South East Asia Ltd, a JV previously established between Camco International Ltd (UK Listed) and Khazanah Nasional Bhd (Malaysian sovereign wealth fund) prior to full divestment to Khazanah in 2013. Kumar also served on the board of its venture companies and Executive Director of Bio Power Climate Care Sdn Bhd, the first of its kind biogas grid connected power plant in Malaysia. Kumar was part of the early executive upon the listing of Camco International Ltd. UK and co-founded Camco SE Asia in Kuala Lumpur. He originated several clean energy projects from small hydro to methane capture projects and successfully created one of the largest clean energy asset portfolio in SE Asia. As a leading expert in CDM and emission trading, he regularly advised governments and large financial institutions on carbon asset origination through to commercialisation. Prior to his foray in clean energy development and emission trading, Kumar was Regional Manager of Power Generation business in Asia for Rolls Royce Energy based in Singapore for 3 years from 2004. He also previously served for 4 years as the Area Sales Manager for Alstom Power Asia Pacific based in Kuala Lumpur and responsible for regional sales and business development of new EPC projects for Gas fired and Combined Cycle Power Plants. Kumar started as a gas turbine performance engineer with ABB Power Generation and moved to Baden, Switzerland where together with a team of world leading gas turbine and CCPP experts, he developed innovative water steam system cycle designs for efficient CCPP currently used in most advanced gas fired power plants in operation today. Kumar holds a high distinction Bachelors degree in Mechanical Engineering from University of Toledo, Ohio and participated in several executive management programs throughout Switzerland and the UK. He spoke on several energy conferences and also member board of PowerGen Asia from 2000-2003. He also spoke at several Carbon Forums in Asia and participated in COP under United Nations Framework on Climate Change (UNFCCC).

Brief History

PT Pranata Energi Nusantara Consulting (or PENConsulting for short) was established in May 2002 as an Indonesian Energy Development Process Consulting company, specialized in providing professional and value creative process consultancy services in the Energy and Power Utility sector.

In 2009, recognizing the talents and experience of our consultants, PENConsulting services expanded to include engineering and project management consultancy encompassing food manufacturing and processing, coal water slurry, liquid petroleum gas (LPG) and compressed natural gas (CNG) processing, and oil refinery.


  1. Hoesein Wiriadinata, SH, LLM (President Commissioner 2002-2013) *
  2. Ir, Puguh Sugiharto, MSc (President Director 2002-2004, Executive Director 2004-2010, Commissioner 2010-2013) *
  3. Ir. Anton Wahjosoedibjo (Executive Director 2002-2004, President Director 2004-present)
  4. Dr. Ir. Madjedi Hasan, MPE, MH (Director 2012-2018) *
  5. Ir. Michael Sumarijanto, MBA (Commissioner 2002-2013, President Commissioner 2013-present)


To become an internationally reputable energy development process consultant and a partner of choice in the energy industry, admired for its integrity, professionalism, and broad network.


To provide professional consultancy services through a process of aligning our client's business, people, and resources toward value optimization, shaping up strategy that requires balancing competitive and collaborative processes, and effective networking with stakeholders.


  • Comply with prevailing laws and regulations
  • Search for the best possible intellectual, innovative, and professional avenues that add value to our valued clients
  • Adhere to the highest standard of business ethics and good corporate governance
  • Serve as a good, reliable and trusted corporate citizen
  • Give priority to customer satisfaction in an objective and proportionate manner
  • Emphasize the important aspects of safety, energy efficiency, and utilization of environmentally friendly energy.

Fact Sheet

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