Awards
Supasit Boonsanong has extensive experience in complex cross-border energy transactions, including project finance, M&As, and operations in renewable, oil, gas, and petrochemical sectors. He advises leading energy companies on project development, joint ventures, licensing, supply, construction, and financing agreements, and is skilled in negotiating EPC contracts.
He leads the legal team advising Thai authorities on petroleum law amendments and teaches petroleum and investment law at Chulalongkorn University.
With over 20 years at top international law firms in Bangkok and over 15 years as general counsel for Thailand’s National Petrochemical Company, Supasit offers extensive legal expertise in the energy field.
Practice Areas
Education/Professional Experience
- 1984
- Chulalongkorn University (LL.B.)
- 1983 - 1986
- APA International Law Office
- 1987 - 2000
- Manager of Legal Office, National Petrochemical PLC
- 1991
- The Centre for Energy, Petroleum and Mineral Law and Policy, University of Dundee (LL.M.)
- 1994 - 2025
- Special Lecturer, Faculty of Law, Chulalongkorn University
- 1996 - 1997
- Special Lecturer, Faculty of Engineering, Kasetsart University
- 2000 - 2018
- Partner, Chandler & Thong - ek Law Offices Ltd. (currently Chandler Mori Hamada Limited)
- 2018 - 2019
- Partner, The Phenomena Ltd., Bangkok
- 2019 - 2025
- Partner, Tilleke & Gibbins International Ltd., Bangkok
- 2025 - present
- Partner (Thailand), Nagashima Ohno & Tsunematsu
Awards
Publications
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Newsletters
Thailand’s 2026 Energy Outlook: Critical Reserve Data & the Race to the Andaman (Thailand)
Supasit Boonsanong, Kobchai Nitungkorn (Co-author)
- Infrastructure/Energy/Environment
- Power Generation/Renewable Energy
-
Newsletters
Decoding the Power Development Plan Overhaul: Why Thailand’s 25-Year Roadmap Rewrites the Rules of Investment (Thailand)
Supasit Boonsanong, Kobchai Nitungkorn (Co-author)
- Infrastructure/Energy/Environment
- Power Generation/Renewable Energy
-
Newsletters
Thailand Approves 1,500 MW Community Solar Program with Time-Sensitive “First-Served” Selection (Thailand)
Supasit Boonsanong, Kobchai Nitungkorn (Co-author)
- Infrastructure/Energy/Environment
- Power Generation/Renewable Energy
-
Newsletters
Compliance Deadline Looms: Thailand’s New Regulation for Beauty Service Contracts (Thailand)
Supasit Boonsanong, Kobchai Nitungkorn (Co-author)
- Corporate
- Corporate Governance
- Global Practice
