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Operations

Efficiency

National Electric System Operator – ONS

The National Electric System Operator (ONS) is the entity responsible for coordinating and controlling the operation of electric power generation and transmission facilities within the National Interconnected System (SIN), as well as planning the operation of the country’s isolated systems. Its activities are carried out under the regulation of the Brazilian Electricity Regulatory Agency (Aneel).

By coordinating the operation of the National Interconnected System, ONS helps optimize energy resource usage, facilitating energy exchange between regions. This is essential in a country with continental dimensions like Brazil, as it allows areas with high demand or low generation to receive support from other regions, minimizing risks and interruptions.

With Brazil’s energy matrix being predominantly hydroelectric, ONS plays an even more crucial role during drought periods, enabling the integration of alternative energy sources such as wind, solar, and thermal power into the system. This management contributes to a more sustainable and resilient operation, ensuring that energy reaches millions of Brazilians safely and efficiently.

Resilience and Reliability:

Ensures a stable energy flow across the country, balancing supply and demand to prevent overloads and reduce the risk of blackouts.

Integrated Management of Multiple Energy Sources:

Coordinates the use of hydroelectric, wind, solar, and thermal power sources, leveraging each type of generation to efficiently meet consumption needs.

Rapid Crisis Response:

In emergency situations, such as water crises or transmission line failures, quickly redirects power supply to the most affected regions, ensuring service continuity.

National Interconnected System – SIN

The National Interconnected System (SIN) is the main electricity transmission network in Brazil, connecting almost all power plants in the country to distribution networks and end consumers. Essentially, it integrates energy generation, transmission, and distribution, allowing different regions to share electricity according to their needs.

The SIN enables, for example, energy generated at a hydroelectric plant in the North to be transmitted to the Southeast if that region has higher demand. This interconnection helps balance energy supply and demand across the country, while also enhancing the security and reliability of Brazil’s electrical system, reducing the risk of blackouts, and enabling more efficient energy resource management.

In Brazil, where the energy matrix is predominantly hydroelectric, the SIN also ensures greater resilience during drought periods, as regions can share generation from different sources (hydroelectric, thermal, wind, and solar), contributing to the stability and sustainability of energy supply in the country.

Flexibility and Security:

In crisis situations (such as water shortages at hydroelectric plants or interruptions in some transmission lines), the SIN allows energy to be redirected from other sources or regions.

Resource Optimization:

Enables the efficient use of various energy sources, integrating wind, solar, hydro, and thermal generation, optimizing the use of each resource.

Cost Reduction:

By allowing energy to be generated where it is cheapest and sent to areas with higher demand, the system reduces generation and transportation costs, benefiting the end consumer.

Regulation

Compliance and Excellence in Transmission Operations

The Brazilian Electricity Regulatory Agency (ANEEL) is responsible for regulating and supervising the Brazilian electricity sector, ensuring that the generation, transmission, distribution, and commercialization of energy occur with safety, efficiency, and transparency. As an autonomous agency linked to the Ministry of Mines and Energy, ANEEL establishes standards and guidelines for the sector, ensuring a competitive and balanced environment.

Evoltz operates in full compliance with regulatory guidelines, ensuring the efficiency of its operations and the fulfillment of all legal requirements. Our work is guided by responsibility and a strong commitment to sustainability, always focused on delivering high-quality service aligned with the expectations of our stakeholders and the needs of the Brazilian electricity sector.