Projects and energy in Thailand

Allen & Overy (Thailand) Co, Ltd

Allen & Overy (Thailand) Co, Ltd's projects and energy practice possesses a 'very capable and experienced group of talented individuals.' The firm acts on airports, rail, mass rapid transit infrastructure matters and renewable energy projects. Stephen Jaggs and Sarah Wilson jointly lead the team, both are recognised as 'talented and experienced lawyers.' Jaggs is notable in the infrastructure and power sectors, primarily on the project finance side, while Wilson handles cross-border energy projects.

Practice head(s):

Stephen Jaggs; Sarah Wilson


‘Very capable and experienced group of talented individuals with a deep bench of support available in the region and around the globe.’

‘The main people we work with are Stephen Jaggs and Sarah Wilson. They are both very talented and experienced lawyers and have a pragmatic approach to finding solutions without wasting time and money.’


Key clients

Asian Development Bank

Bangkok Bank Public Company Limited/Siam Commercial Bank Public Company Limited/Standard Chartered Bank (Thai) Public Company Limited

PTT Public Company Limited

Kasikornbank Public Company Limited

Xekong Thermal Power Plant Company/Phonesack Group Limited

Nam Ngum 3 Power Company/Chaleun Sekong Group Co., Ltd./EGAT International Co., Ltd.

Nam Theun 1 Power Company Limited/Electricity Generating Public Company Limited/EDL Generation Public Company

Xe-Pian Xe-Namnoy Power Company Limited/SK Engineering and Construction Co. Ltd./Korea Western Power/Ratchaburi Electricity Generating Holding Public Company Limited

Nam Ngiep 1 Power Company Limited/Kansai Electric Power Co. Inc.

BNP Paribas, Singapore Branch

Total Gas and Power Business Services

Siemens AG

Work highlights

  • Advised the lenders, comprising ADB, Bangkok Bank, Siam Commercial Bank, and Standard Chartered Bank (Thai) on the financing of a 50MW utility-scale solar power plant and transmission line in the Thanh Thanh Cong Industrial Zone in southern Vietnam.
  • Continuing to advise Xekong Thermal Power Plant Company and Phonesack Group in connection with the development and financing of the 1,800MW cross-border Xekong coal-fired power plant project in the Lao PDR with offtake by Electricité du Cambodge.
  • Advising Chaleun Sekong Group Co., Ltd. and EGAT International Co., Ltd. on the share purchase (from Électricité du Laos) and development and financing of the 480MW Nam Ngum 3 Lao hydropower project located in Long Cheng District, Xaisomboun Province in central Laos.

Baker McKenzie LLP

Baker McKenzie LLP acts on the full remit of projects and energy matters including renewable energy projects, mining and infrastructure development. This is in addition to M&A in the energy sector. Heading up the team is Sawanee Sethsathira who has experience in energy projects, PPPs and infrastructure projects. She has advised the Ministry of Finance on the framework of infrastructure funds in Thailand. Associate Napas Na Pombejra is active on cross-border project development.

Practice head(s):

Sawanee Sethsathira

Other key lawyers:

Napas Na Pombejra

Key clients


PTT Group and its subsidiaries and affiliated companies

Gulf Energy Development Public Company Limited (GED)

EGAT International (EGATi)

Bangkok Expressway and Metro Public Company Limited (BEM)

B.Grimm Power Limited and Amata B. Grimm Power

Bangchak Petroleum Public Company Limited


Bangkok Bank Public Company Limited

KASIKORNBANK Public Company Limited

Work highlights

  • Advising Gulf PD Company Limited (GPD) on the project financing from a syndicate of 16 Thai and International banks including JBIC and ADB for their 2,500 MW Natural Gas-Fired Combined Cycle Power Plant located in Rojana Industrial Park, Thailand.
  • Representing the BGSR consortium of Gulf Energy Development Public Company Limited, BTS Group Holdings Public Company Limited, RATCH Group Public Company Limited and Sino-Thai Engineering and Construction Public Company Limited as the successful consortium bidders in negotiating the PPP Agreements for M6 and M81 motorway projects entered into with the Department of Highway of Thailand.
  • Advising Frasers in the project development of the first phase of Thailand’s largest hyper-scale data center in Ramkhamhaeng, Bangkok.

Chandler MHM Limited

Chandler MHM Limited focuses on cross border work, enabled by the firm's broad presence in Asia. The team acts for local and international lenders as well as sponsors on power and infrastructure projects. Department head and co-managing partner Jessada Sawatdipong is notable for his project finance work and cross-border energy and natural resources and infrastructure expertise.

Practice head(s):

Jessada Sawatdipong

Key clients

BCPG Indochina Co., Ltd.

China Harbour Engineering Company Limited

China Railway signal and Communication (CRSC) International Co., Ltd.

Work highlights

  • Advised BCPG Indochina, a subsidiary of BCPG PLC (one of Asia-Pacific’s leading companies in renewable energy), on the acquisition financing of the Nam San 3A and Nam San 3B hydro power projects in Lao PDR.
  • Advised China Harbour Engineering Company Limited in relation to the bid for the Public, Private Project (PPP), consortium formation and incorporation processes.
  • Represented CRSC International in reviewing and negotiating the terms of the Engineering, Procurement, and Construction contract to design and build signaling equipment for the State Railway of Thailand (SRT), the state-owned railway operator, as part of its dual-track upgrade project.

Hunton Andrews Kurth LLP

Hunton Andrews Kurth LLP advises on the full lifecycle of projects and energy matters from investment and financing, to construction and operation matters. Additionally, it assists clients on cross-border acquisitions of conventional and renewable energy. Edward B. Koehler represents sponsors, lenders and government enterprises on energy and infrastructure M&A, often with a cross-border element. James P. Bradley works on projects and power plant compliance in Thailand, Cambodia and the Philippines. Chumbhot Plangtrakul is noted for his experience in renewable energy and battery energy storage projects.

Key clients

Asian Development Bank

Banner Engineering Corporation

Banpu Public Company Limited

BlueRun Ventures

Bunge Limited

GNPower Group Companies

Electricity Generating Public Company Limited

Energy Absolute PLC

Impact Electron Siam Company Limited

Infunde Development Pte. Ltd.

KASIKORNBANK Public Company Limited

KB Kookmin Bank

Quezon Power (Philippines), Limited Co.

San Buenaventura Power Ltd. Co.

Work highlights

  • Advised EGCO on the cross-border acquisition of a certain ownership interest in 640 MW offshore wind power project in Taiwan.
  • Advised ADB and KBank on approximately USD 20 million financing to develop the Lomligor 10 MW wind power facility with an integrated 1.4 MWh battery energy storage system in Thailand.
  • Advising BNAC on the fund arrangements and the IPO structuring for its multiple investments in shale gas mining business in North America.

Weerawong, Chinnavat & Partners

Weerawong, Chinnavat & Partners advises on oil, gas and renewable energy matters in combination with project finance and infrastructure development. Head of the practice Weerawong Chittmittrapap works on some of the largest infrastructure projects in Thailand including the construction of new airports, ports and mass transit systems. Senior associate Jirapat Thammavaranucupt is also prominent on projects in connection with the Thai government's Eastern Economic Corridor plan.

Practice head(s):

Weerawong Chittmittrapap

Other key lawyers:

Jirapat Thammavaranucupt

Key clients

Office of the Eastern Economic Corridor of Thailand (EEC), Government of Thailand

PTT Public Company Limited

Port Authority of Thailand (Transportation)

Department of Highways (Transportation)

Bangkok Mass Transit System Public Company Limited (Transportation)

Northern Bangkok Monorail Company Limited (Transportation)

Eastern Bangkok Monorail Company Limited (Transportation)

State Enterprise Policy Organization (SEPO), Ministry of Finance, Government of Thailand

Thai Airways Public Company Limited (TG) (Transportation)

CAT Telecom Public Company Limited (CAT)

Global Power Synergy Public Company Limited

PTT Exploration and Production Public Company Limited

PTT Global Chemical Public Company Limited

Wind Energy Holding Co., Ltd.

Planet Energy Holdings Pte. Ltd.

Thai Oil Public Company Limited; Thaioil Marine Co., Ltd.

TTCL Public Company Limited (TTCL), an international engineering company

Work highlights

  • Represented Government of Thailand, State Enterprise Policy Office of Thailand (SEPO), in drafting the new Public-Private Partnership Act B.E. 2562 (2019) (the “new PPP law”) in Thailand. This is the new legislation governing the infrastructure projects by using the mechanism called Public Private Partnership (PPP).
  • Representation of the government of Thailand, Office of the Eastern Economic Corridor of Thailand (EEC) in relation to undertaking Public-Private Partnership (concession) project for the High-Speed Rail Link for Three Airports (Don Mueang, Suvarnabhumi and U-Tapao).
  • Representation of the Office of the Eastern Economic Corridor of Thailand (EEC) in relation to undertaking Public-Private Partnership (concession) project for the U-Tapao International Airport. This is the first airport project developed under the PPP framework.

DFDL Legal & Tax

DFDL Legal & Tax assists its clients with advice on transactions and regulatory matters in relation to energy, mining and infrastructure projects. This includes multi-jurisdictional project finance and development advice. Audray Souche heads up the team and is also the managing partner. She has over a decade of experience in Southeast Asia advising on green energy and transportation projects.  

Practice head(s):

Audray Souche

Key clients

Phonesack Group

Abt Associates / USAID

B.Grimm Power Public Company Limited

Bangkok Bank Public Company Limited

Siam Commercial Bank


A Consortium of Thai lenders (Krung Thai Bank as Inter-creditor Agent)

Total Solar

A French Multinational Company in the Airport Sector

Wheig Asia

Work highlights

  • Acting as local counsel to the sponsor (Phonesack Group) in relation to the Power Purchase Agreement (Cambodian law) and the concession with the government of the Lao PDR (Lao law). The project is expected to start construction in 2021 and reach the commercial operation date of the first unit in 2025 and full commercial operation date in 2027.
  • Advising B.Grimm Power Public Company Limited on the acquisition of 100% shares in a Cambodia project company (i.e. Ray Power Supply Co., Ltd.) granted a concession right to own, develop and operate a 30MW solar power plant project in Banteay Meanchey province, Cambodia (the “Project”). Assisted the client in conducting legal due diligence, drafting and negotiating the Share Purchase Agreement and other transaction documents, and closing of the acquisition transaction.
  • Acting for Total Solar in a review of draft Private Power Purchase Agreement, including Thai regulatory advice and contributions on market practice/conditions, in relation to the installation of 25 MWp solar rooftop PV for Thay food company Betagro (24 sites).


Linklaters's expertise extends to oil and gas, LNG, renewable energy, natural resources, infrastructure and mining. Advising on project financing, and acquisitions is a key aspect of the practice. Team leader Wanwisar Nakarat is a specialist in project finance, acting on the major aspects of the Eastern Economic Corridor and projects in other countries in Southeast Asia. Wilailuk Okanurak is noted for her cross-border projects experience including financing for energy projects.

Practice head(s):

Wanwisar Nakarat

Other key lawyers:

Wilailuk Okanurak


‘Wilailuk Okanurak (LL BKK Managing Partner) really puts hands on the matter. She has an holistic view of the deal from macro perspective yet at the same time has drilled into details to guide and work with us along and all the way from start, implementation, and to closing. Her well-rounded and in depth legal knowledge, long standing experience, expertise, sharp and practical solution as well as professional client handling are difficult for other individual in the market to compete.’

Key clients

Bangkok Bank Plc.

Charoen Pokphand Group


Credit Suisse

Gulf Energy Development Plc.

Gunkul Public Company Limited

Bank of America Merrill Lynch

Mitsui & Co.

Dow Chemical

Morgan Stanley

Phatra Securities

GC Plc.

PTT Exploration and Production Plc.

Standard Chartered

Krung Thai Asset Management Plc.


Italian-Thai Development Plc.

Thaicom Public Company Limited

Krung Thai Bank Plc.

RATCH Group Public Company Limited

Thai Oil Public Company Limited


Work highlights

  • Advised the Consortium in the bidding and all contracts for the development, construction, operation, financing and maintenance of the US$7.5 billion High Speed Rail Linking Three Airports Project by the State Railway Authority of Thailand.
  • Advised the lenders on the long term limited-recourse US$1.366bn project financing to fund the development and construction of a 2,500 MW natural gas-fired power plant.
  • Advised Bangkok Bank Public Company Limited  in connection with the financing to each of the project companies which are wholly-owned subsidiaries of Gunkul Engineering Public Company Limited, to undertake 30MW solar power project in Vietnam.

Norton Rose Fulbright

Norton Rose Fulbright represents clients in an array of  sectors including renewable energy, conventional energy projects as well as PPP projects, involving ports, airports, rail and roads. Tassanai Kiratisountorn  is leading the team and advises lenders and borrowers on transactions in the energy sector, especially the renewables industry. Senior associate Chormas Premsirinirund has especial expertise in project financing.

Practice head(s):

Tassanai Kiratisountorn

Other key lawyers:

Chormas Premsirinirund

Key clients

Bangkok Bank Public Company Limited

Standard Chartered Bank

Bank of Ayudhya Public Company Limited

Export-Import Bank of Thailand

The Siam Commercial Bank Public Company Limited

KASIKORNBANK Public Company Limited

Mizuho Bank

Work highlights

  • Acted for Bank of Ayudhya Public Company Limited, Kiatnakin Bank Public Company Limited, Krung Thai Bank Public Company Limited, The Siam Commercial Bank Public Company, in financing the acquisition of shares of Glow Energy Public Company Limited and ENGIE Holding (Thailand) Co., Ltd. (owned by ENGIE Global Developments B.V.) by Global Power Synergy Public Company Limited.
  • Advised Bangkok Bank Public Company Limited, Bank of Ayudhya Public Company Limited, KASIKORNBANK Public Company Limited, Krung Thai Bank Public Company Limited, The Siam Commercial Bank Public Company Limited in relation to the financing of the development of a mixed-use real estate project by Kasem Subsiri Co., Ltd., a subsidiary of TCC Assets (Thailand) Co., Ltd.
  • Advising Bangkok Bank Public Company Limited on US$75,000,000 financing of the construction of the swine complex project developed by Jilin Zhong Xin Chia Tai Food Company Limited located in Jilin Province, the People’s Republic of China.

Tilleke & Gibbins

Tilleke & Gibbins assists its domestic and global clients  on their operations in the Thai and Southeast Asia wider markets. Advice includes financing, licensing and investment hmatters. Joseph Tomkiewicz is co-leading the team and is recognised for his expertise in transactional and litigation matters relating to the energy industry. Supasit Boonsanong is noted for his advice to Thai government authorities on legislative amendments to the country’s petroleum laws while Cynthia M. Pornavalai is recommended for her work on commercial transactions in the energy industry.

Key clients

Amec Foster Wheeler

Bangkok Synthetics

Department of Mineral Fuels


PEA Encom

Petroleum Institute of Thailand

PTT Group Companies (including PTTOR, PTTGC, PTTEP, and various others)

Rojana Power


United Power of Asia Public Company Limited

Work highlights

  • Engaged by one of the largest petroleum companies in Asia for assistance in specialized tax planning matters related to an engineering, procurement, and construction (EPC) contract for an olefins reconfiguration project.
  • Advised a privately owned Chinese company that offers customized satellite and space solutions on the renovation and operation of a satellite earth station owned by one of Thailand’s leading public research universities.
  • Representing a major Southeast Asian Energy conglomerate in bidding for two multi-billion dollar projects in Thailand’s Eastern Economic Corridor.

Watson Farley & Williams (Thailand) Limited

Watson Farley & Williams (Thailand) Limited acts on the full range of renewable energy matters as well as conventional energy projects in the Thai market. Advice includes assistance on regulatory matters, M&A transactions and construction projects. Christopher Osborne  is co-leading the team alongside Steven Burkill and the duo work on  maintenance contract matters, financial agreements and projects and energy disputes.

Key clients

Department of Mineral Fuels, Ministry of Energy, Government of Thailand

Devon Renewable Energy

Greenovation Power

Korat Wind Energy

Mizuho Bank

PTT Public Company Limited

Super Wind Energy Limited

Wind Energy Development

Work highlights

  • Advising Greenovation Power, Korat Wind Energy, Wind Energy Development on the preparation of novation documents and the assignment of secured finance agreements under Multicurrency Facilities from Siam Commercial Bank.
  • Advising and acting for the Kingdom of Thailand and the Ministry of Energy in multi-billion US$ arbitration proceedings relating to decommissioning disputes with oil major concessionaires concerning assets in the Gulf of Thailand.
  • Advising Mizuho Bank Thailand Branch on the provision of stand-by letter of credit facilities for a 640MW Offshore Wind Farm in Taiwan.

Kudun & Partners

Kudun & Partners 'provide innovative solutions' to its clients' cases and offers advice on a broad array of projects and energy issues. Founding partner Kudun Sukhumananda works with Thai and international clients on infrastructure funds while Kom Vachiravarakarn is active in the  renewable energy sector. Somboon Sangrungjang and Saravut Krailadsiri provide related litigation and tax expertise, with Krailadsiri notable for his experience in the oil and gas industry.


‘Kudun and Partners team is flexible and highly responsive to our needs. We like that they work as a team across different practice areas and provide business-oriented legal advice. We are happy to work with them as they provide innovative solutions to our problems and seek the best methods to address our concerns.’

‘Kudun and Kongkoch are the partners leading our project. They are highly knowledgeable in this sector, extremely responsive and they put their feet in our shoes to ensure the success of our project. Both are extremely energetic and willing to help. Chai is the senior associate who supported us. His knowledge in the renewable energy sector is outstanding. He is friendly and eager to facilitate our team at any given time.’

Key clients

B.Grimm Power-Energy China Consortium

One of the eight subsidiaries of the first and largest wind farm in Southeast Asia with a total capacity of over 700MW

Eastern Water Resources Development and Management Public Company Limited

Phongsubthavy Roads and Bridges Construction and Irrigation Sole Company Limited, Lao PDR

BG Container Glass Public Company Limited (BGC)

B. Grimm Power Company Limited

Khonburi Sugar Public Company Limited

Thai Solar Energy Public Company Limited

Earth Tech Environment Co., Ltd. and Better World Green PCL.

Alternative energy company specializing in providing clean energy and reducing greenhouse gas emission with factories based in Bangkok and Chiang Mai

An integrated energy service provider covering oil and gas field decommissioning, renewable energy, transportation and digital solutions with services in Cambodia, Laos, Myanmar and Vietnam

Hydrotek Public Company Limited

Demeter Corporation Public Company Limited (DCORP)

Jetion Solar

Work highlights

  • Lead counsel in advising B.Grimm Power-Energy China Consortium in their bidding to build the world’s largest hydro floating solar hybrid power project at Sirindhorn dam in Ubon Ratchathani by the Electricity Authority of Thailand (EGAT), combining hydropower and solar power project which is the largest hybrid power generation in the world with the output of 45 MW.
  • Defending one of the eight subsidiaries of the first and largest wind farms in Southeast Asia with a total capacity of over 700MW and over 10 licenses from EGAT (Electricity Generating Authority of Thailand). Trouble started in 2015 when the Energy Regulatory Commission (ERC) began to set limitations on erecting turbines close to residences.
  • Acting as legal counsel to the Eastern Water Resources Development and Management Public Company Limited, selected to be the operator for water supply project at U-Tapao International Airport. Advice given to the client and the authorities, including the Board of Investment, Eastern Economic Corridor Office of Thailand and Office of Natural Resources and Environmental Policy and Planning including preparing the feasibility study report pinpointing legal risks in land lease, compliance, and total water solution aspects.

Siam Premier International Law Office Limited

Siam Premier International Law Office Limited's team acts for its clients on consortium and joint venture agreements, and disputes arising out of projects and project financing for regional energy projects. Rawat Chomsri co-heads the practice. He is active on contentious and non-contentious energy matters in Thailand and Laos while co head Chatchavej Chitvarakorn has experience of infrastructure and construction matters.

Key clients

The Port Authority of Thailand

Chevron (Thailand) Limited

Electricity Generating Authority Thailand

Irradiance Solar Co., Ltd.

Amata Corporation Public Company Limited

Tipco Asphalt Public Company Limited

Work highlights

  • Acting for the Thai Port Authority as legal consultant for major projects. PAT is a state corporation of Thailand, responsible for the regulation and governance of the ports of Thailand, primarily the ports of Laem Chabang and Bangkok Port, the country’s two largest ports.
  • Assists Electricity Generating Authority Thailand (EGAT) in providing legal opinion and advising on the operation of EGAT including taxation, business, investment, PPP.
  • Assists client in drafting the Private Power Purchase Agreement between Irradiance Solar and buyers which are mostly factory to install the solar rooftop.