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SAINT-GHISLAIN STEG

Gas power plant in Wallonia, Belgium. Approximate location 50.4719, 3.8248.

GasWalloniaBelgium

SAINT-GHISLAIN STEG is a 350 MW gas power station in Wallonia, Belgium. Based on reported annual generation of 1,060 GWh, it can supply roughly 302,714 homes. It ranks #13 of 75 Belgium power plants by installed capacity. Commissioned in 2000, it is around 26 years old — long-established. In context, gas supplies about 21.5% of Belgium's electricity; the national grid averages 150 gCO₂/kWh (72.0% low-carbon) (2025).

350MW installed capacity
1,060GWh reported / yr
302,714homes powered
2000commissioned (~26 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1002267.

~423,800 t CO₂/yr (estimated) — in everyday terms

This facility's annual emissions are roughly equivalent to:

98,788passenger cars driven for a year
55,269homes' yearly energy use
7,063,333tree seedlings grown 10 years to absorb it

Estimated, not measured: from reported annual generation × a typical gas emission factor (~400 g CO₂/kWh, IPCC AR5 / US EIA). Actual emissions depend on plant efficiency and running hours.Equivalencies via US EPA Greenhouse Gas Equivalencies.

Reported generation trend

2015: 1,333 GWh20152016: 1,218 GWh20162017: 1,060 GWh20171k GWh

Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).

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 temperate oceanic climate (Köppen Cfb) — Northern Hemisphere, latitude 50.5°N — which shapes how much energy it can produce and how its output varies through the year.

10.1°Cannual mean temp
2,880heating degree-days (base 18°C)
0cooling degree-days (base 18°C)
77 melevation

Monthly mean temperature

J: 3 °CJF: 4 °CFM: 6 °CMA: 9 °CAM: 13 °CMJ: 16 °CJJ: 18 °CJA: 18 °CAS: 14 °CSO: 11 °CON: 6 °CND: 4 °CD18 °C

Heating degree-days here run 17% above the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.

Climate heat-demand index: 59/100 — this site sits in the mid third of the power plants we cover by heating degree-days.

In colder climates, uninsulated hot equipment (boilers, turbines, valves, steam lines) loses proportionally more heat to ambient air — exactly the loss Inzonex modular insulation is designed to cut.

A gas turbine here also runs ~0% 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.

How it compares & nearby plants

The #8 largest gas power plant of 21 in Belgium by capacity.

Belgium has 21 gas power plants in this dataset, together about 4,242 MW of capacity.

Nearby power plants

Location

Coordinates 50.4719, 3.8248 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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