Since natural gas was discovered in the Erawan Field in the Gulf of Thailand in 1973, it was the beginning of electricity development from natural gas and the achievement of the country to be self-reliant on energy leading to the Age of Brightness and the origin of Bang Pakong Power Plant.

Bang Pakong Power Plant was constructed in 1997 and completed in 1981 using natural gas as fuel. The opening ceremony was performed on January 8, 1985 by His Majesty King Bhumibol accompanied by Her Royal Highness Princess Maha Chakri Sirindhorn. The power plant has enhanced economic growth in the Eastern area to be more stable and also supported Mab Ta Phud Industrial Estate.

Apart from power development, EGAT has always placed importance to environmental care. Being the large thermal power plant situated on the bank of Bang Pakong River and near the fish cage culture and the source of aquatic animal breeding, automatic water thermometer is installed at Bang Pakong Power Plant before releasing wastewater into the public water source to minimize the impact on aquatic ecosystem. Environmental protection is a mission of vital importance coupled with maintaining security of the power system of EGAT. 

Bang Pakong Power Plant consists of thermal power plant and combined cycle power plant with contractual generating capacity of 3,248 MW as follows : 

• Thermal power plant, Units 3-4 with contractual generating capacity of 1,152 MW  
• Combined cycle power plant, Unit 5 with contractual generating capacity of 710 MW
• Combined cycle power plant, Block 1 (replace Units 1-2) with contractual generating capacity of 1,386 MW