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Santo Antônio

Hydro power plant in Rondonia, Brazil. Approximate location -8.8011, -63.9497.

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Santo Antônio is a 3,568 MW hydro power station in Rondonia, Brazil. It is operated by Santo Antônio Energia (Madeira Energia / Furnas-led). Based on its capacity (estimated), it can supply roughly 3,572,077 homes (estimated). It ranks #4 of 2,549 Brazil power plants by installed capacity. Commissioned in 2012, it is around 14 years old — relatively modern. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 51.8% of Brazil's electricity; the national grid averages 110 gCO₂/kWh (88.7% low-carbon) (2025).

3,568MW installed capacity
3,572,077homes powered (est.)
2012commissioned (~14 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id BRA0029707.

Capacity vs largest hydro plants in Brazil

Tucuruí: 8,535 MW9kTucuruíItaipu (Parte Brasileira): 7,000 MW7kItaipu (Pa…Jirau: 3,750 MW4kJirauSanto Antônio: 3,568 MW4kSanto Antô…Ilha Solteira: 3,444 MW3kIlha Solte…Belo Monte: 3,328 MW3kBelo MonteXingó: 3,162 MW3kXingóPaulo Afonso IV: 2,462 MW2kPaulo Afon…

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

Owner

Operated by Santo Antônio Energia (Madeira Energia / Furnas-led).

Local climate & thermal context

This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a tropical monsoon climate (Köppen Am) — Southern Hemisphere, latitude 8.8°S — which shapes how much energy it can produce and how its output varies through the year.

25.8°Cannual mean temp
0heating degree-days (base 18°C)
2,842cooling degree-days (base 18°C)
99 melevation

Monthly mean temperature

J: 26 °CJF: 26 °CFM: 26 °CMA: 26 °CAM: 26 °CMJ: 25 °CJJ: 25 °CJA: 26 °CAS: 26 °CSO: 26 °CON: 26 °CND: 26 °CD26 °C

Heating degree-days here run 100% 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: 13/100 — 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 #4 largest hydro power plant of 701 in Brazil by capacity.

Brazil has 701 hydro power plants in this dataset, together about 98,039 MW of capacity.

Nearby power plants

Location

Coordinates -8.8011, -63.9497 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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