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GSPP 11

Gas power plant in Rayong, Thailand. Approximate location 13.0013, 101.1361.

GasRayongThailandCCGT · HRSG

GSPP 11 is a 272 MW gas power station in Rayong, Thailand. It is operated by GLOW Group. Based on its capacity (estimated), it can supply roughly 306k homes (estimated). It ranks #47 of 238 Thailand power plants by installed capacity. Commissioned in 2013, it is around 13 years old — relatively modern. In context, gas supplies about 65.5% of Thailand's electricity; the national grid averages 546 gCO₂/kWh (16.6% low-carbon) (2025).

272Source-backed capacity
2HRSG unit(s)
306,349homes powered (est.)
2013commissioned (~13 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1019462.

Data status

Known data

FacilityGSPP 11 WRI
CountryThailand · Rayong WRI
Coordinates13.0013, 101.1361 WRI
FuelGas WRI
MW installed capacity272 MW WRI source record; scope not independently normalised
OwnerGLOW Group WRI
Commissioned2013 WRI
TechnologyCCGT · HRSG WRI

Calculated from dataset

CO₂ emissions428,890 t CO₂/yr calculated
Capacity rank in country#47 of 238 calculated
Fuel-specific rank in country#28 of 61 calculated
Capacity vs country/fuel peers1.06× · 256 MW median · 61 peers calculated
Homes-powered equivalent306,349 calculated
Climate27.6°C · HDD 0 derived from coordinates
Environmental severityC5 · 49/100 derived from coordinates

Not available

GWh reported / yrNot available not in dataset

Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.

Data provenance

The capacity and/or fuel fields on this page include a source-backed provenance label from GEM, an official registry, Wikidata, OSM, or a cross-source match.

capacity: GEM tracker 2026 (location L100000405379); fuel: WRI source-record fuel

In context: how this plant compares

At 272 MW, GSPP 11 is around the median gas plant in Thailand (256 MW). Technically it is described as CCGT; combined-cycle with a heat-recovery steam generator (HRSG). Gas plants burn natural gas either in open-cycle turbines for fast peaking, or in combined-cycle units that recover exhaust heat in an HRSG to reach roughly 55–62% efficiency — the cleanest-burning fossil option.

Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.

Capacity vs largest gas plants in Thailand

Bang Pakong: 4,384 MW4kBang PakongRatchaburi (RATCHGEN): 3,645 MW4kRatchaburi…Chonburi Ng Project power station: 2,500 MW2kChonburi N…Rayong Gulf PD power station: 2,500 MW2kRayong Gul…Wang Noi: 2,027 MW2kWang NoiSongkhla Chana power station: 1,700 MW2kSongkhla C…South Bangkok: 1,691 MW2kSouth Bang…Nong Saeng: 1,600 MW2kNong Saeng

Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by GLOW Group.

Local climate & thermal context

This gas plant burns natural gas in a turbine — often in a combined-cycle setup — to generate electricity. It sits in a tropical savanna climate (Köppen Aw) — Northern Hemisphere, latitude 13.0°N — which shapes how much energy it can produce and how its output varies through the year.

27.6°Cannual mean temp
0heating degree-days (base 18°C)
3,521cooling degree-days (base 18°C)
55 melevation

Monthly mean temperature

J: 26 °CJF: 27 °CFM: 28 °CMA: 29 °CAM: 29 °CMJ: 29 °CJJ: 28 °CJA: 28 °CAS: 28 °CSO: 27 °CON: 27 °CND: 26 °CD29 °C

This site has effectively no heating season (tropical/equatorial climate), so winter heat loss is not the driver here. The thermal concern shifts to year-round process heat and humidity/heat-driven corrosion of hot equipment.

A gas turbine here also runs ~9% below its ISO (15°C) rating at this annual mean (typical CCGT curve, estimate).

Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.

Site climate & environmental severity

For a plant’s outdoor hardware — heat-recovery steam generators (HRSG), expansion joints, valves, flanges and their insulation — the local climate sets how fast unprotected steel and coatings degrade. This site sits in an aggressive, high-corrosion environment (estimated ISO 9223 class C5 — Very high), with marine salt corrosion the leading environmental stress.

C5ISO 9223 corrosivity (indicative)
49/100environmental-severity index
3.6°Cseasonal temperature swing
37 kmdistance to coast

Higher environmental severity is exactly where protective removable insulation pays back most: a sheltered micro-climate slows corrosion, UV and thermal-cycling damage and extends outdoor hardware service life. This is an indicative site-climate context — not a condition assessment of any specific plant or operator.

Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.

How it compares & nearby plants

The #28 largest gas power plant of 61 in Thailand by capacity.

Thailand has 61 gas power plants in this dataset, together about 42,069 MW of capacity.

Nearby power plants

Location

Coordinates 13.0013, 101.1361 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is GSPP 11?

GSPP 11 is a 272 MW source-record gas power plant in Rayong, Thailand, commissioned in 2013.

How many homes can GSPP 11 power?

Its output is enough to supply roughly 306,349 homes (estimated).

Who operates GSPP 11?

GSPP 11 is operated by GLOW Group.

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