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Kok Jin Ong

Kok Jin Ong

Senior Associate

Jin specialises in energy and infrastructure M&A in the Asia-Pacific region, with a particular focus on renewables and power. 



Jin focuses his practice on the energy and infrastructure sectors and has worked on a number of transactions in those sectors in the Asia-Pacific region. His recent experience is focused on M&A and joint venture work for renewables and power transactions and he also has several years of experience in upstream and downstream oil and gas transactions. 

Jin's wide-ranging experience across a variety of sectors and involvement in the full lifespan of a deal, from due diligence to dispute, enables him to provide relevant and comprehensive advice that takes into consideration the wider aspects of a transaction. He also understands the needs of in-house teams from his experience on secondment to a FTSE 250 energy company in London and a virtual secondment to the downstream team of an international energy company in Singapore.

Jin's experience includes advising:

  • international and regional clients, including financial buyers, renewable energy developers and international energy companies on renewables M&A and joint ventures in Southeast Asia
  • the Kansai Electric Power Company on its strategic alliance with Medco Power Indonesia in relation to a portfolio of thermal power plants (both operational and in development) in Indonesia 
  • international and regional clients, including Woodside, Chevron and Santos, on upstream oil and gas M&A in various jurisdictions including Malaysia, Myanmar, Indonesia, Bangladesh and Vietnam
  • international and regional clients, including international oil and gas trading companies and Asian national oil companies, on proposed joint venture arrangements in the downstream oil and gas sector in Southeast Asia
  • the Japanese consortium on its bid for the multi-billion dollar Kuala Lumpur (Malaysia) to Singapore High Speed Rail project





Jin trained at the London headquarters of a leading international firm and has been based in Singapore since 2014. Prior to joining Herbert Smith Freehills at the start of 2018, he worked at the Singapore office of a US law firm. 

Jin has an LLB from the University of Warwick and an LLM from the London School of Economics. He is admitted as a solicitor in England and Wales. Jin is a native English speaker and has working proficiency in written and spoken Bahasa Malaysia and Bahasa Indonesia and limited proficiency in written and spoken Mandarin Chinese.