Santo Antônio Dam

The Santo Antônio Dam is a hydroelectric dam on the Madeira River 6 km (4 mi) southwest of Porto Velho in the state of Rondônia, Brazil. The dam's run-of-the-river hydroelectric power station has 50 turbines, each rated at 71.6 MW resulting in a total installed capacity of 3,580 MW. The first unit began commercial production in March 2012, and as of June 2015 a total of 32 units were operational. The last 6 units went online in December 2016. Most of the power will be exported to south-eastern Brazil via the Rio Madeira HVDC system. The dam is part of a planned four power plant Madeira river hydroelectric complex, which will consist of two dams in Brazil (Santo Antônio and 3, 750 MW Jirau Dam about 100 km upstream), a third on the border of Brazil and Bolivia (Guayaramerin), and a fourth station inside Bolivia (Cachuela Esperanza). Santo Antonio and Jirau Dam are operating, while the smaller upstream dams are still in the planning stages. In part due to the 2001-2002 power shortage in Brazil, construction of both dams was accelerated in 2009. The total estimated cost of the two facilities currently under construction is $15.6 billion ($7 billion for Santo Antônio), including about $10 billion for the civil engineering and power plants, and $5 billion for ship locks, transmission lines, and environmental re-mediation. The Madeira river hydroelectric complex is part of the Initiat

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