Sahanivotry — Madagascar
Hydro power plant in Amoron'i Mania, Madagascar. Approximate location -20.2003, 47.1328.
HydroAmoron'i ManiaMadagascar
Sahanivotry is a 16.5 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 17k homes (estimated). It ranks #12 of 16 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).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1026779.
Data status
Known data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Data provenance
Capacity and fuel are the upstream open-dataset record, not yet matched to a 2026 registry or GEM entry.
capacity: WRI GPPD; fuel: WRI GPPD
In context: how this plant compares
At 16.5 MW, Sahanivotry is around the median hydro plant in Madagascar (16.5 MW). Hydropower converts the energy of falling or flowing water into electricity; output depends on rainfall and reservoir level, and large dams also provide grid balancing and storage.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Key facts
- Share of Madagascar hydro capacity
- 14.7% of 113 MW across 5 plants in this dataset
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Capacity vs largest hydro plants in Madagascar
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.
Monthly mean temperature
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.
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.
Site climate & environmental severity
This site sits in a moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with humidity / wetness the leading environmental stress.
Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.
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
- Ambohimanambola · Oil · 19.7 MW · Vakinankaratra
- Ambatolampy · Solar · 40 MW · Vakinankaratra
- Tsiazompaniry · Hydro · 5.2 MW · Analamanga
- Antelomita · Hydro · 8.9 MW · Analamanga
- Ambohimanambola (Aksaf) power plant · Oil · 66 MW · Ambohimanambola
- Ambohimanambola (Trigu) power plant · Oil · 105 MW · Ambohimanambola
Location
Coordinates -20.2003, 47.1328 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Sahanivotry?
Sahanivotry is a 16.5 MW hydro power plant in Amoron'i Mania, Madagascar.
Who operates Sahanivotry?
Sahanivotry is operated by HYDELEC Madagascar SA.