Rayong is a 1,232 MW gas power station in Rayong, Thailand. It is operated by EGCO. Based on its capacity (estimated), it can supply roughly 1.4 million homes (estimated). It ranks #19 of 238 Thailand power plants by installed capacity. Commissioned in 1994, it is around 32 years old — long-established. In context, gas supplies about 65.5% of Thailand's electricity; the national grid averages 546 gCO₂/kWh (16.6% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1019466.
Data status
Known data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Data provenance
Capacity and fuel are the upstream open-dataset record, not yet matched to a 2026 registry or GEM entry.
capacity: WRI GPPD; fuel: WRI GPPD
In context: how this plant compares
At 1,232 MW, Rayong is well above the median gas plant in Thailand (256 MW). 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.
Key facts
- Share of Thailand gas capacity
- 2.9% of 42,069 MW across 61 plants in this dataset
- Age among peers
- 4 of 60 dated gas plants in Thailand are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Capacity vs largest gas plants in Thailand
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by EGCO.
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 12.8°N — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
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
This site sits in an aggressive, high-corrosion environment (estimated ISO 9223 class C5 — Very high), with marine salt corrosion the leading environmental stress.
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 #14 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
- CUP-2 · Gas · 113 MW · Rayong
- Map Ta Phut BKK power station · Gas · 112 MW · Rayong
- CUP-1 · Gas · 228 MW · Rayong
- Glow Energy Phase 2 Power Plant · Gas · 258 MW · Rayong
- Glow Demin · Gas · 124 MW · Rayong
- TPT Petrochemical power station · Coal · 55 MW · Rayong
Location
Coordinates 12.7623, 101.1562 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Rayong?
Rayong is a 1,232 MW gas power plant in Rayong, Thailand, commissioned in 1994.
Who operates Rayong?
Rayong is operated by EGCO.