Engineering:Saraburi Gas Turbine

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Short description: Gas-fired combined-cycle power plants in Saraburi Province, Thailand


The term Saraburi Gas Turbine Power Plant is commonly used to describe major gas-fired combined-cycle power stations located in Saraburi Province, Thailand, notably Kaeng Khoi 2 (≈1,468 MW) and Nong Saeng (≈1,600 MW). Both facilities operate as independent power producer (IPP) projects under long-term power purchase agreements with the Electricity Generating Authority of Thailand (EGAT) and supply the Central Region grid.[1][2]

Location

Both plants are in Saraburi Province (central Thailand). Kaeng Khoi 2 is sited in Ban Pa/Kaeng Khoi area; Nong Saeng is in Nong Kop/Nong Saeng area.[1][3]

Capacity and Technology

Kaeng Khoi 2: two blocks of 734 MW each (≈1,468 MW total), gas-fired combined cycle (CCGT). Commercial operation dates: May 2007 (Block 1) and March 2008 (Block 2).[1][4]

Nong Saeng: 1,600 MW (800 MW × 2) CCGT, with units scheduled to enter service June 2014 and December 2014 per EPC notices; project financing documentation confirms 1,600 MW and a 25-year PPA with EGAT.[3][5][6]

Owner and Operator

Kaeng Khoi 2 is developed and operated by Gulf Power Generation Company Limited (GPG) under a Build-Own-Operate scheme; J-POWER reports a 49% investment share in the project company and confirms the 25-year PPA with EGAT.[1]

Nong Saeng is developed by Gulf JP NS Co., Ltd. (GNS) with international co-financing; JBIC's project finance release confirms the sponsor structure and PPA with EGAT.[5][3]

Operations

The plant operates under Thailand's Independent Power Producer (IPP) framework:

Fuel: primary natural gas; dual-fuel capability (e.g., distillate) is available for reliability.[1][7]

Grid offtake: electricity is sold to EGAT under long-term PPAs (25 years cited for Kaeng Khoi 2 and Nong Saeng).[1][5]

Performance upgrades (Saraburi gas turbines): case studies report gas-turbine inlet-air cooling retrofits on two GE 6561B turbines in Saraburi, adding ≈4.3 MW per unit (≈8.6 MW total) during high-temperature conditions.[8]

Finances

Kaeng Khoi 2: Total project cost ~ 36.1 billion Baht (≈108.1 billion yen).[1]

Nong Saeng: Project financing up to US$1.184 billion arranged by JBIC alongside co-financing; EPC by Mitsubishi Heavy Industries for two 800 MW trains with scheduled CODs in 2014.[5][3][6]

Environmental and “Green Energy” aspects

While gas-fired CCGT plants are fossil-fuel facilities, higher thermal efficiency means lower CO₂ intensity per MWh compared with older thermal units. Thailand-focused studies (JCM/Ministry of the Environment, Japan) describe inlet-air cooling/chiller retrofits as efficiency measures that can increase net output and reduce emissions per kWh.[9][8]

Kaeng Khoi 2 (≈1,468 MW CCGT).[1]

Nong Saeng (≈1,600 MW CCGT).[5][10]

Nong Khae (NK2) SPP (≈133 MW gas-fired SPP in Saraburi; distinct from the above IPPs).[11]

See also

Energy in Thailand

Electricity Generating Authority of Thailand

Energy Regulatory Commission (Thailand)

List of power stations in Thailand

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 "Operational launch of the Block 1 of the Kaeng Khoi #2 Power Station in Thailand". 7 May 2007. https://www.jpower.co.jp/english/news_release/news/news070507.pdf. 
  2. ↑ "Project Financing for Nong Saeng Natural Gas-Fired Combined Cycle Power Plant in Thailand". 7 Nov 2011. https://www.jbic.go.jp/en/information/press/press-2011/1107-6209.html. 
  3. ↑ 3.0 3.1 3.2 3.3 "MHI Receives Full-turnkey Order for 1,600 MW GTCC Power Plant from Gulf JP NS". 13 Dec 2011. https://www.mhi.com/news/1112131481.html. 
  4. ↑ "Operational launch of the Block 2 of the Kaeng Khoi #2 Power Station in Thailand". 3 Mar 2008. https://www.jpower.co.jp/english/news_release/news/news080303.pdf. 
  5. ↑ 5.0 5.1 5.2 5.3 5.4 "Project Financing for Nong Saeng Natural Gas-Fired Combined Cycle Power Plant in Thailand". 7 Nov 2011. https://www.jbic.go.jp/en/information/press/press-2011/1107-6209.html. 
  6. ↑ 6.0 6.1 "Extended Annual Review Report: Nong Saeng Power Project". 2016. https://www.adb.org/sites/default/files/project-documents/44946/44946-014-xarr-en.pdf. 
  7. ↑ "MHI Receives Full-turnkey Order for 1,600 MW GTCC Power Plant". 13 Dec 2011. https://www.mhi.com/news/1112131481.html. 
  8. ↑ 8.0 8.1 "Two GE 6561B Gas Turbines Achieve 8.6 MW Boost—Saraburi, Thailand". 19 Jun 2024. https://www.meefog.com/2024/06/19/two-ge-6561b-gas-turbines-achieve-8-6-mw-boost-saraburi-thailand/. 
  9. ↑ "Feasibility Study of Large-Scale CO₂ Reduction by JCM—Application of Inlet Air Cooling to Gas Turbine Combined Cycle in Thailand". 2016. https://www.env.go.jp/earth/coop/lowcarbon-asia/english/project/data/EN_THA_2014_01.pdf. 
  10. ↑ "MHI Receives Full-turnkey Order for 1,600 MW GTCC Power Plant from Gulf JP NS". 13 Dec 2011. https://www.mhi.com/news/1112131481.html. 
  11. ↑ "Gulf NK2 power station (โรงไฟฟ้าหนองแค 2)". 2025. https://www.gem.wiki/Gulf_NK2_power_station. 

"Operational launch of Kaeng Khoi #2 (Block 1)". 7 May 2007. https://www.jpower.co.jp/english/news_release/news/news070507.pdf. 

"Operational launch of Kaeng Khoi #2 (Block 2)". 3 Mar 2008. https://www.jpower.co.jp/english/news_release/news/news080303.pdf. 

"JBIC Project Financing—Nong Saeng 1,600 MW CCGT". 7 Nov 2011. https://www.jbic.go.jp/en/information/press/press-2011/1107-6209.html. 

"MHI EPC announcement—Nong Saeng GTCC (800 MW × 2)". 13 Dec 2011. https://www.mhi.com/news/1112131481.html. 

"ADB Extended Annual Review Report—Nong Saeng". 2016. https://www.adb.org/sites/default/files/project-documents/44946/44946-014-xarr-en.pdf. 

"Gas-turbine inlet cooling study—Thailand context". 2016. https://www.env.go.jp/earth/coop/lowcarbon-asia/english/project/data/EN_THA_2014_01.pdf. 



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