Bangchak Green Net Co., Ltd. (BGN)
The subsidiary was set up to manage service stations and inthanin coffee shop, and sell consumer products in Lemon Green and Bai Chak convenience stores to support the continued expansion of its retail business.

 
Bangchak Biofuel Co., Ltd. (BBF)
Located in Amphoe Bang Pa-in, Ayutthaya, the subsidiary was set up to develop and produce domestic alternative fuels, starting with a 300,000-liter/day biodiesel plant running mainly on crude palm oil.  Its management philosophy is centered on environmental considerations, as seen in the design and construction of an artificial water-management pond system relying on nature’s help in water treatment from the country’s first biodiesel plant with zero-discharge water management.  

 
Bangchak Solar Energy Co., Ltd. (BSE)
Bangchak Solar Energy Co., Ltd is 100% owned by the Company. The subsidiary was set up to operate a solar power plant project, known by the name Sunny Bangchak, with 38 megawatts in capacity, also located at Amphoe Bang Pa-in of Ayutthaya province. , the plant will promote Bang Pa-in as a learning center and Thailand's first tourist attraction for integrated alternative energy. The company plans to invest more in such power generation to reach 118 megawatts or more.

Ubon Bio Ethanol Co., Ltd. (UBE)

Ubon Bio Ethanol Co., Ltd. is manufacturer of ethanol from fresh cassava roots and cassava chips, with capacity of 400,000 liter per day or 132 million liter per year. UBE intends to mainly export the product to China. Moreover, UBE also has few subsidiaries which were set up to produce and process cassava, and own the power plant which use the water that comes out from the production processing.

  
Fuel Pipeline Transportation Co., Ltd. (FPT)
This company was set up to manage fuel transportation through a network of underground, multi-product pipelines starting from Bangchak Refinery in parallel with the railway leading to the Chongnonsri and Don Muang depots, and finally to the Company’s Bang Pa-in Depot and FPT.  This route was extended near the Makkasan area to Suvarnabhumi Airport to transport aviation fuel by JP-One Asset Co., Ltd.

 
ASEAN Potash Mining Public Co., Ltd. (APMC)
This company was set up to explore for and produce potash around Amphoe Bamnet Narong, Chaiyaphum, for manufacturing and sales as potassium chloride fertilizers.  This project arose from collaboration among ASEAN member countries to capitalize on natural resources of member countries.