Gas power plant in Eastern Cape, South Africa. Approximate location -33.0274, 27.8838.
GasEastern CapeSouth AfricaCO₂ reported
Port Rex is a 171 MW gas power station in Eastern Cape, South Africa. It is operated by Eskom. Based on its capacity (estimated), it can supply roughly 192,594 homes (estimated). It ranks #31 of 122 South Africa power plants by installed capacity. Commissioned in 1976, it is around 50 years old — long-established. Its measured emissions of 75,749 t CO₂/yr (Climate TRACE) are equivalent to about 17,657 cars driven for a year. In context, gas supplies about 0.0% of South Africa's electricity; the national grid averages 699 gCO₂/kWh (17.8% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1000133.
This facility's annual emissions are roughly equivalent to:
Equivalencies via US EPA Greenhouse Gas Equivalencies; emissions reported to Climate TRACE.
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Operated by Eskom. All plants by this company →
This gas plant burns natural gas in a turbine — often in a combined-cycle setup — to generate electricity. It sits in a humid subtropical climate (Köppen Cfa) — Southern Hemisphere, latitude 33.0°S — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
Heating degree-days here run 91% below 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: 17/100 — this site sits in the bottom 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 ~3% 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.
The #2 largest gas power plant of 2 in South Africa by capacity.
South Africa has 2 gas power plants in this dataset, together about 342 MW of capacity.
Coordinates -33.0274, 27.8838 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
