Siemens and its partner South Korean POSCO Engineering & Construction Co. Ltd. (POSCO E&C), an affiliate of POSCO, one of the largest steel companies in the world, completed the Ansan combined cycle power plant in a record time of 24 months from groundbreaking to first commercial operation date (COD). It is the fourth Siemens H-class-based combined cycle power plant in commercial operation in Asia with an efficiency level of more than 60%. In addition to generating electricity, the plant will also provide district heating for the inhabitants of the city of Ansan.
Combined heat and power production raises the overall fuel utilization factor to over 75%. Its NOx emissions of 7 ppm are the lowest in Korea. This makes the plant one of the most efficient and eco-friendly fossil-fuel-fired electricity generating plants in South Korea.
The first H-class power plant in Korea
The owner and operator of the plant is S-Power, headquartered in Ansan. The Ansan CHP is located in the city of the same name in Gyeonggi-do province southwest of the capital Seoul. This liquefied natural gas (LNG) fired plant is the first H-class 2+1 multi-shaft power plant in Korea and has an electrical capacity of 834 MW. Siemens delivered the power island main equipment: two gas turbines of type SGT6-8000H, an SST6-5000 steam turbine, three hydrogen-cooled generators of type SGen6-2000H, and two heat recovery steam generators from BHI, South Korea, as well as the entire instrumentation and control technology, SPPA-T3000. Siemens will also supply the long-term service for the gas turbines.