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Malelane power station

Biomass power plant in Mpumalanga, South Africa. Approximate location -25.4643, 31.5662.

BiomassMpumalangaSouth Africa

Malelane power station is a 34 MW biomass power plant in Mpumalanga, South Africa. It is operated by Transvaal Suiker Beperk Middenen Ontwikkeling Pty Ltd. Based on its capacity (estimated), it can supply roughly 47,354 homes (estimated). It ranks #81 of 122 South Africa power plants by installed capacity. In context, biomass supplies about 0.2% of South Africa's electricity; the national grid averages 699 gCO₂/kWh (17.8% low-carbon) (2025).

34MW installed capacity
47,354homes powered (est.)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id CT-6252.

Capacity vs largest biomass plants in South Africa

SAPPI NGODWANA: 117 MW117SAPPI NGOD…Malelane power station: 34 MW34Malelane p…Felixton power station: 32 MW32Felixton p…Maidstone power station: 21 MW21Maidstone …Komati (biomass) power station: 20 MW20Komati (bi…ENERGY Joburg Electircity Project power station: 19 MW19ENERGY Job…Noodsberg power station: 19 MW19Noodsberg …Sezela power station: 19 MW19Sezela pow…

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

Owner

Operated by Transvaal Suiker Beperk Middenen Ontwikkeling Pty Ltd. All plants by this company →

Local climate & thermal context

This biomass plant burns organic material (wood, residues) to raise steam for a turbine. It sits in a hot semi-arid steppe climate (Köppen BSh) — Southern Hemisphere, latitude 25.5°S — which shapes how much energy it can produce and how its output varies through the year.

21.5°Cannual mean temp
100heating degree-days (base 18°C)
1,380cooling degree-days (base 18°C)
410 melevation

Monthly mean temperature

J: 25 °CJF: 25 °CFM: 24 °CMA: 22 °CAM: 19 °CMJ: 16 °CJJ: 16 °CJA: 18 °CAS: 21 °CSO: 22 °CON: 24 °CND: 25 °CD25 °C

Heating degree-days here run 96% 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: 15/100 — 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.

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 #2 largest biomass power plant of 14 in South Africa by capacity.

South Africa has 14 biomass power plants in this dataset, together about 350 MW of capacity.

Nearby power plants

Location

Coordinates -25.4643, 31.5662 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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