IBAMA (Brazilian Institute of Environment and Renewable Natural Resources) has issued the installation license for the 800 kV Graça Aranha–Silvânia transmission line.
In practice, the authorization allows the start of construction on an infrastructure considered strategic for expanding the flow of renewable energy generation from the North and Northeast regions to the country's main energy consumption centers.
The project foresees investments estimated at R$ 18 billion, encompassing the construction of the transmission line, substations, and synchronous compensators.
The system will be approximately 1.500 kilometers long and will use ultra-high voltage direct current technology (±800 kV). The route will pass through the states of Maranhão, Tocantins, and Goiás, with the goal of increasing energy transport capacity and improving the operational efficiency of the SIN (National Interconnected System).
For the CMSE (Electricity Sector Monitoring Committee), the project is considered fundamental both for national energy security and for the advancement of the Brazilian energy transition.
The line will connect the Graça Aranha Substation in Maranhão to the Silvânia Substation in Goiás. Work on both facilities is already underway and is part of a broader set of investments aimed at expanding transmission infrastructure between the North, Northeast, and Central-West regions.
The expectation of the government and industry stakeholders is that the project will help reduce restrictions on the distribution of renewable energy generation, especially wind and solar power, whose expansion has been more intense in the Northern and Northeastern states in recent years.
In addition to expanding electrical integration between different regions of the country, the new line should increase the operational flexibility of the system, allowing energy generated in areas with high renewable potential to be transported more efficiently to large consumer centers.
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