Sérgio R. Leite, Ludimila L. Silva & Luiz R. Gomes


6. ANEEL’s Role in the May 2024 Events ANEEL’s actions during adverse weather events were characterized by a rapid response to declared emergencies. On April 29, 2024, as soon as special weather conditions were confirmed over the state of Rio Grande do Sul, the Agency set up a situation room within the scope of its Superintendence for the Supervision of Electricity Services in order to monitor and take the necessary steps to ensure that the energy supply was guaranteed or resumed in Rio Grande do Sul. From that moment on, the area began to provide the ministry and other interested parties with information about the rains and their effects on the structures it monitors. On May 2, 2024, with the recognition of a state of public calamity in the state of Rio Grande do Sul, the Crisis Committee was set up with the aim of identifying and coordinating the necessary measures and managing ANEEL’s actions to deal with the impacts of ongoing climatic events. Inspection teams were sent to monitor the situation on site. The committee’s meetings were held daily in person and by videoconference. The use of the videoconferencing system made it possible to include new players, such as the National Center for Monitoring and Warning of Natural Disasters (Cemaden) and the National Electricity System Operator (ONS). Depending on the need, other stakeholders were involved in the discussions. This was the case with agents who had experienced dam failure or events that had drastically altered the safety level of their dams. The dynamic of meetings via videoconference made it possible to hold meetings as often as necessary and to involve representatives with decision-making power. At the same time, the Agency intensified its inspection activities at various dams in the state, guiding


sector agents to activate Emergency Action Plans (EAP) at dams in critical situations. Together with Civil Defence, Climate Monitoring Centres and state authorities, ANEEL worked collaboratively to organize preventive evacuation efforts in risk areas, ensuring that people living near dams were moved to safe places. Regulatory measures were adopted to ensure that generators complied with the necessary emergency


measures, as well as to mitigate the effects of the state of calamity on market agents affected by the calamity in their market operations. The calamity not only impacted the agents in physical and operational terms, but also generated significant social and environmental impacts. Due to the need to control the level of the reservoirs, equalize the cascade and maintain the safety of the dams, the flow of excess water over the spillways had the side effect of flooding rural areas, resulting in substantial agricultural losses, compromising local ecosystems and evacuating riverside communities and those in flood areas. ANEEL monitored these operations with the concessionaires and the System Operator to ensure that the dams were operated in such a way as to minimize damage. Additional concerns were raised by the affected populations regarding water quality in the impacted regions. In this context, when necessary, ANEEL advised the environmental agencies on mitigating these impacts.


7. Challenges Faced by ANEEL in Supervision and Monitoring According to Puga[24]


, crises are important endurance tests for governance systems in any area, testing the adaptive capacity of their components, testing their limits and demonstrating their bottlenecks. In the 172 | Dam Engineering | Vol XXXIII Issue 3


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