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Sahanivotry

Hydro power plant in Amoron'i Mania, Madagascar. Approximate location -20.2003, 47.1328.

HydroAmoron'i ManiaMadagascar

Sahanivotry is a 16 MW hydro power plant in Amoron'i Mania, Madagascar. It is operated by HYDELEC Madagascar SA. Based on its capacity (estimated), it can supply roughly 16,518 homes (estimated). It ranks #8 of 12 Madagascar power plants by installed capacity. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 37.0% of Madagascar's electricity; the national grid averages 432 gCO₂/kWh (42.4% low-carbon) (2024).

16MW installed capacity
16,518homes powered (est.)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1026779.

Capacity vs largest hydro plants in Madagascar

Andekaleka: 58 MW58AndekalekaLa Mandraka: 24 MW24La MandrakaSahanivotry: 16 MW16SahanivotryAntelomita: 9 MW9AntelomitaTsiazompaniry: 5 MW5Tsiazompan…

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

Owner

Operated by HYDELEC Madagascar SA.

Local climate & thermal context

This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a temperate oceanic climate (Köppen Cfb) — Southern Hemisphere, latitude 20.2°S — which shapes how much energy it can produce and how its output varies through the year.

16.6°Cannual mean temp
701heating degree-days (base 18°C)
169cooling degree-days (base 18°C)
1,517 melevation

Monthly mean temperature

J: 19 °CJF: 19 °CFM: 19 °CMA: 18 °CAM: 15 °CMJ: 13 °CJJ: 12 °CJA: 13 °CAS: 15 °CSO: 17 °CON: 19 °CND: 19 °CD19 °C

Heating degree-days here run 71% 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: 23/100 — 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 #3 largest hydro power plant of 5 in Madagascar by capacity.

Madagascar has 5 hydro power plants in this dataset, together about 113 MW of capacity.

Nearby power plants

Location

Coordinates -20.2003, 47.1328 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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