In the early times of electricity generation development, EGAT had been assigned to be responsible for this mission. It was the same time when Thailand was moving to distribute development from the city to several local areas. The government tried to move industrial zone from Bangkok area to suburban areas and the regions.

South Bangkok Power Plant was constructed according to the policy of the 2^nd National Economic and Social Development Plan (1967-1971). The construction began in 1967 and completed in 1970.The power plant has generating capacity of 1,330 MW using fuel oil as fuel. On November 6, 1972, the opening ceremony of South Bangkok Power Plant was performed by His Majesty King Bhumibol.

South Bangkok Power plant is a good example of power source to respond to the need of using electricity for heavy industries in the Southern part of Bangkok such as Battery Plant, Automobile Assembly Plant, and Animal Feed Processing Plant etc. Furthermore, the problem of power outage or blackout has also decreased.

Presently, the power plant is a combined cycle power plant using natural gas from the Thai Gulf and from Myanmar as the main fuel and diesel as secondary for electricity generation. It is one of EGAT’s power plant which is community and environmental friendly.

At present, South Bangkok Power Plant has contractual generating capacity of 1,930 MW comprising

• Block 3 with generating capacity of 710 MW
• Block 4 with generating capacity of 1,220 MW