Siemens and its Japanese consortium partner Marubeni Corp. will deliver a turnkey combined cycle power plant to Thailand’s state-owned utility, Electricity Generating Authority of Thailand (EGAT).
The gas-fired power plant South Bangkok will incorporate two units in a single-shaft configuration and will feature two Siemens H-class gas turbines–the first time those turbines will be used in Thailand. After commissioning in 2019, the power plant with an electrical output of around 1200 MW is expected to power 1.5 million Thai households. The combined order volume for Siemens and Marubeni is approximately US$550 million.
“This marks not only the fifth order from EGAT for the two consortium partners for a power plant in Thailand but is also the first time that Siemens will supply its largest and most efficient gas turbine to the country,” said Willi Meixner, CEO of the Siemens Power and Gas Division. “We have been able to offer a power plant solution with optimized levelized cost of electricity for the customer´s specific requirements. Siemens is looking forward to executing this project successfully and to continue its partnership with EGAT and Marubeni.”
Siemens will deliver the key components, consisting of two SGT5-8000H gas turbines, two SGen5-3000W generators and two steam turbines of model SST5- 5000. Also included in the scope of supply are two heat recovery steam generators engineered by NEM and the SPPA-T3000 control system. The consortium partner Marubeni is responsible for civil and erection works, cooling tower, high voltage gas insulated switchyard and some balance of plant equipment.
The power plant is constructed on the basis of the Siemens single-shaft concept, in which the major components (gas turbine, generator and steam turbine) are arranged in one single train. These types of plants stand out thanks to their high level of efficiency, their short startup times and their flexibility in accommodating fast load changes, Siemens said. The combined cycle power unit South Bangkok situated 20 km south of Bangkok in the Mueang district is part of the Thai government´s Project Development Plan. The goal of this program is to provide a safe, affordable and environmentally friendly solution for the growing energy demand in the country. Additionally, Thailand is depending more on imported liquefied natural gas (LNG). Therefore the need of highly efficient power plants is gaining momentum, Siemens said.
Siemens and Marubeni already have built Chana 1, Bang Pakong 5, Chana 2 and Wang Noi 4 combined cycle projects for EGAT in the last 10 years.