Ubombo Mill is a 13 MW biomass power plant in Lubombo, Swaziland. Based on its capacity (estimated), it can supply roughly 17,895 homes (estimated). It ranks #6 of 6 Swaziland power plants by installed capacity. In context, biomass supplies about 34.4% of Swaziland's electricity; the national grid averages 131 gCO₂/kWh (96.7% low-carbon) (2024).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1023191.
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
This biomass plant burns organic material (wood, residues) to raise steam for a turbine. It sits in a humid subtropical climate (Köppen Cfa) — Southern Hemisphere, latitude 26.8°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 98% 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: 14/100 — 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.
The #3 largest biomass power plant of 3 in Swaziland by capacity.
Swaziland has 3 biomass power plants in this dataset, together about 44 MW of capacity.
Coordinates -26.7729, 31.9416 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
