Transmission

The Santo Antônio Hydroelectric Plant will be connected to the National Interconnection System (NIS) through two high voltage transmission lines (500 kV) with a continuous current. At 2,400 km  in length (the longest in the world), these lines will connect the converting substation in the city of Porto Velho in Rondônia to the Araraquara substation in the state of São Paulo, having crossed five states and 90 municipalities.

Energy produced from the Santo Antônio Hydroelectric Plant will be placed in the National Interconnection System (NIS) through the Araraquara substations and distributed to consumers in all regions of the country. This transmission system will also allow the state of Rondônia to be fully connected to the NIS, which is partially carried out by the Acre-Rondônia system at the moment.

The benefits of this connection are increased quantity, quality and reliability of the electrical energy received. Another consequence will be the deactivation of thermal plants installed in the region that are supplied by diesel, which is less reliable and efficient, have high costs and produce a large volume of emissions during their operation.

The two lines which will connect the Porto Velho and Araraquara substations are currently under construction. The energy produced from the Santo Antônio Hydroelectric Plant is placed on the NIS through a 230 kV line from Cuiabá for this reason.

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