Siemens Energy has received two orders from Thailand for the EPC (engineering, procurement and construction) of two 800 MW combined cycle power plants. Together with its Japanese partner Marubeni, Siemens is to build Chana Block 2 in the province of Songkhla and Wang Noi Block 4, near Bangkok. Chana 2 will be the first single-shaft power plant built in Thailand based on the Siemens design while Wang-Noi will be of multi shaft configuration. The purchaser is the state-owned utility Electricity Generating Authority of Thailand (EGAT). The two power plants are scheduled to come on line in the summer of 2014. Total investment volume amounts to approximately USD1 billion, with more than half for the Siemens contribution. The two associated long-term maintenance contracts, also with Siemens, will be signed at a later date.
Thailand is the largest per capita power consumer in Southeast Asia and currently has an installed power capacity of approximately 39 GW. Because of the high consumption, above all in the steel, textiles and rubber industries, power demand is increasing there at an annual rate of as much as 3.5 %, to which the Thai government is responding with a plan to increase the total to 52 GW by 2020. With a share of just under 70%, gas-fired power plants today account for a major part of Thailand’s power generating capacity, a proportion expected to rise by 5% by 2015.
Siemens is to build the natural-gas-fired Chana 2 as an extension to the Chana Block 1 plant. It will supply all the main components, inlcuding an SGT5-4000F gas turbine, an SST5-3000-series steam turbine, an SGen5-2000H generator, all the electrical equipment, an SPPA-T3000 I&C system, and the ancillary and auxiliary systems. Marubeni will be responsible for supply of the heat-recovery steam generator, the main transformers and switchgear, and for erection and installation of the overall plant.
The Wang Noi Block 4 combined cycle power plant is to be built as an extension to the existing complex Wang Noi Blocks 1 to 3. The plant will be of multi-shaft design consisting of two SGT5-4000F gas turbines, an SST5-5000 steam turbine, three SGen-1000A generators, the entire electrical and I&C (SPPA-T3000) equipment, and the ancillary and auxiliary systems.
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