Siemens is to supply its most recent gas turbine technology, the 60% efficiency H class, to the Ansan combined cycle and CHP plant in South Korea. Siemens will be constructing the power island as a turnkey project and will supply the main components – two gas turbines of type SGT6-8000H, an SST6-5000 steam turbine, and three hydrogen-cooled generators of type SGen6-2000H. Siemens is also supplying two Benson heat recovery steam generators, and the SPPA-T3000 instrumentation and control system. A long-term service agreement has also been signed for the main components. .

Ansan will be the second power plant in South Korea to be equipped with the new GTs. The customer is the South Korean Posco Engineering & Construction Co. Ltd, headquartered in Incheon, which is responsible for construction of the entire plant. Ansan will be fuelled with liquefied natural gas and will have a gross installed electrical capacity of 834 MW at a gross efficiency expected to be 61 %. In addition to generating electricity, the plant will also provide district heating for the inhabitants of the city of Ansan, which raises the overall fuel utilisation factor to over 75 %. Commissioning is planned for the end of 2014.

Ansan CCPP is being built in the city of Ansan in Gyeonggi-Do province southwest of the capital Seoul. The expanding economy of South Korea requires a demand for electricity annually growing at the rapid rate of 3.6 percent. In the last ten years the installed power plant capacity rose from 60 gigawatts (GW) to more than 80 GW. However, the country has few energy resources of its own and is the second largest importer of LNG in the world. Because of high gas prices, high-efficiency generation play a particularly important role.