World Power Plants

Santo Antônio Dam3,568.3 MW Hydroelectric

HydroRenewableVerified: Feb 2026

The Santo Antônio Dam is a significant hydroelectric power plant located in Brazil, contributing substantially to the country's energy landscape. With an impressive capacity of 3568.3 MW, it plays a pivotal role in Brazil's energy generation strategy, particularly in the Amazon Basin region. The dam utilizes advanced hydroelectric technology, harnessing the power of flowing water to generate electricity, a method that is both renewable and efficient. Commissioned in 2008, the Santo Antônio Dam has been instrumental in providing a steady supply of energy to the local grid, enhancing energy security for the surrounding communities. Situated at coordinates -8.8017, -63.9508, the plant is strategically positioned along the Madeira River, which is crucial for its operational efficiency. This location not only maximizes the potential for energy generation but also supports the ecological balance of the region by managing water flows effectively. As part of Brazil's national energy policy, which emphasizes renewable energy sources, the Santo Antônio Dam aligns perfectly with the country's commitment to sustainable growth and reducing carbon emissions. The facility has become a cornerstone of the local energy mix, significantly reducing reliance on fossil fuels and supporting Brazil's transition to cleaner energy solutions. Overall, the Santo Antônio Dam exemplifies the successful integration of hydroelectric power into national energy strategies, showcasing how such facilities can balance energy needs with environmental stewardship.

Capacity
3,568.3 MW

3.57 GW

Commissioning Year
2008

18 years old

Owner
Eletrobras
Location
-8.8017°, -63.9508°

Brazil, South America

Context & rankings
  • 9. largest of 2,402 plants in Brazil
  • #243 worldwide by installed capacity
  • #40 of 8,493 Hydroelectric plants worldwide
  • 1.43% of the installed capacity of Brazil
Age & fleet comparison

18 years in operation

Hydroelectric fleet average: 42.1 years

Operator portfolio

Eletrobras operates 63 plants totalling 54,619 MW

Regional density

9 plants within 100 km, 11,690 MW combined

Nearest plant: Shopping Porto Velho (7.9 km)

Data provenance

Source: Wikidata

Location

Coordinates:: -8.801667, -63.950833
Open in Google Maps
Carbon Footprint

Zero Direct Emissions

Santo Antônio Dam is a hydro power plant producing approximately 12503 GWh of clean electricity per year with zero direct CO₂ emissions during operation.

Lifecycle emissions: ~24 g CO₂/kWh (manufacturing, transport, decommissioning)

Technical Details

Primary Fuel Type
Hydro
Energy Source
Renewable
Country
Brazil
Continent
South America
Data Source
Global Power Plant Database

Santo Antônio Dam: A Key Hydro Power Facility in Brazil

The Santo Antônio Dam, located on the Madeira River in the state of Rondônia, Brazil, is a significant hydroelectric power plant with a total installed capacity of 3,568.3 megawatts (MW). Commissioned in 2008, it is one of the largest hydroelectric facilities in the country and plays a crucial role in meeting Brazil's growing energy demands. The dam's operation is vital for the country's energy sector, as it contributes substantially to the national grid and helps to ensure energy stability in a region that relies heavily on hydroelectric sources for power generation.

As a hydroelectric power plant, the Santo Antônio Dam harnesses the kinetic energy of flowing water to generate electricity. The facility operates by using the gravitational force of water flowing from a higher elevation to a lower elevation, which drives turbines that convert mechanical energy into electrical energy. This process is considered renewable and sustainable, as it relies on the natural water cycle and does not deplete resources. The dam's design features a series of turbines and generators capable of producing large amounts of electricity, making it an essential asset in Brazil's energy portfolio.

The environmental impact of the Santo Antônio Dam has been a subject of significant discussion and analysis. While hydroelectric power is generally regarded as a cleaner alternative to fossil fuels, the construction of large dams can lead to ecological disruptions, including habitat loss for local wildlife and changes in water quality and flow. The Santo Antônio Dam has flooded substantial areas of land and altered the river ecosystem, which raises concerns about its long-term effects on biodiversity and local communities. The project has also faced criticism from environmental groups and indigenous populations, who argue that their rights and lands have been affected by the dam's construction and operation.

Regionally, the Santo Antônio Dam is of great significance not only for its energy production but also for its economic impact. The facility has created numerous jobs during its construction and ongoing operation, contributing to local economies. Additionally, the dam supports local infrastructure improvements and generates revenue through energy sales, which can be reinvested in community development and public services. Furthermore, the steady supply of electricity from the dam helps to promote industrial growth and attract investments in the region.

In summary, the Santo Antônio Dam stands as a critical component of Brazil's energy landscape, with its large hydroelectric capacity playing a pivotal role in addressing the country's energy needs. While it offers a renewable energy source and supports regional development, the environmental and social implications of its construction continue to be significant considerations in the ongoing dialogue surrounding large-scale hydroelectric projects.

BrazilEnergy Profile

2,402
Total Plants
250.4 GW
Total Capacity
HydroGasBiomassWind
Top Fuels

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