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Operations

Efficiency

Brazilian Power System Operator (Operador Nacional do Sistema Elétrico) – ONS

The National Electric System Operator (ONS) is the entity responsible for coordinating and controlling the operation of electricity generation and transmission facilities in the National Interconnected System (SIN), in addition to planning the operation of isolated systems in the country. Its activities are carried out under the regulation of the National Electric Energy Agency (Aneel).

By coordinating the operation of the National Interconnected System, the ONS contributes to optimizing the use of energy resources, facilitating the exchange of energy between regions. This is essential in a country with continental dimensions such as Brazil, as it allows that, in times of high demand or low generation in an area, other regions can offer support, minimizing risks and interruptions.

With Brazil’s energy matrix being predominantly hydroelectric, ONS plays an even more crucial role in periods of drought, allowing energy from alternative sources such as wind, solar and thermal to be incorporated 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 sources, taking advantage of each type of generation to efficiently meet consumption needs.

Rapid response in crises:

in emergency situations, such as water crises or line failures, quickly redirects supply to the most in need regions, ensuring continuity of service.

National Interconnected System – SIN

The National Interconnected System (SIN) is the main electricity transmission network in Brazil, which connects almost all of the country’s generating plants to distribution networks and final consumers. Basically, it integrates the generation, transmission and distribution of energy, allowing different regions to share energy according to their needs.

The SIN allows, for example, that the energy generated in a hydroelectric plant in the North can be transmitted to the Southeast, if this region is in greater demand. This interconnection helps balance energy supply and demand across the country, as well as increasing the safety and reliability of the Brazilian electricity system, minimizing the risk of blackouts and enabling more efficient management of energy resources.

In Brazil, where the energy matrix is mostly hydroelectric, the SIN also allows greater resilience in periods of drought, as regions can share the generation of 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 lack of water in hydroelectric plants or interruptions in some lines), the SIN allows to redirect energy from other sources or regions.

Resource Optimization:

allows the use of various energy sources, integrating wind, solar, hydroelectric and thermal generation, optimizing the use of each resource.

Cost reduction:

by allowing energy to be generated where it is cheapest and shipped where there is the most demand, the system lowers generation and transportation costs, benefiting the end consumer.

Regulation

Compliance and excellence in transmission operations

The National Electric Energy Agency (ANEEL) is responsible for regulating and supervising the Brazilian electricity sector, ensuring that the generation, transmission, distribution and commercialization of energy occur safely, efficiently and transparently. As an autarchy 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 compliance with all legal requirements. Our performance is marked by responsibility and commitment to sustainability, always focused on delivering a high-quality service, aligned with the expectations of our stakeholders and the needs of the Brazilian electricity sector.