Toemchai Bunnag

Xayaburi Power Co. Ltd. operates hydroelectric power plants. The company was founded on June 22,2010 and is headquartered in Vientiane, Laos.

Nava Nakorn Electricity Generating Co. Ltd. generates electricity and steam from natural gas.

GPSC International Holdings Ltd. functions as an investment holding Chinese company and is ultimately controlled by the Government of Thailand. The company is based in Hong Kong, Hong Kong.

Amata Natural Gas Distribution Co., Ltd. is a leading developer and operator of industrial parks, which they refer to as industrial cities. The company is based in Muang Chonburi, Thailand and ultimately controlled by the Government of Thailand. The Thai company's goal is to provide the perfect cities for businesses to set up or expand their manufacturing base. The company is committed to creating a culture of all win stakeholders by expanding new frontiers.

PTT Natural Gas Distribution Co., Ltd. is engaged in distribution of natural by pipeline distribution networks. The company was founded on February 6, 1996 and is headquartered in Bangkok, Thailand.

Independent Power Thailand Co. Ltd. owns and operates a power plant. The company is headquartered in Chonburi, Thailand.

Ratchaburi Power Co., Ltd. engages in generation and production of electricity. The company operates as a gas fired combined-cycle plant. Ratchaburi Power was founded in 1996 and is headquartered in Bangkok, Thailand.

Part of Thai Oil Public Co. Ltd., PTT Utility Co. Ltd. is a company that generates and supplies electricity. The company is based in Bangkok, Thailand. PTT Utility Co. was acquired by Independent Power Thailand Co. Ltd. from PTT Public Co., Ltd. on January 10, 2013.