The Electricity Sector Monitoring Committee (CMSE) met this Wednesday (01/06), on an ordinary basis, chaired by Minister Adolfo Sachsida, in its first meeting at the head of the collegiate, and evaluated, among other matters, the conditions electricity supply to the National Interconnected System (SIN).
As highlighted by the National Electric System Operator (ONS), in May 2022, rain continued to occur in the South region, resulting in greater inflows to hydroelectric plants and the respective recovery of storage conditions. In the other regions, rainfall was predominantly below the historical average.
Even so, the improvement in the hydrological conditions of the Southern subsystem was also reflected positively from the point of view of the SIN, since there was a greater energy contribution from this subsystem to the others. As a result, at the end of May, equivalent storage of 66.4%, 90.3%, 94.3% and 98.9% were achieved in the Southeast/Midwest, South, Northeast and North subsystems, respectively, and forecast for the end of June in these subsystems is 66.1%, 93.9%, 92.0% and 99.1%.
The ONS reported that, in May, electricity was exported to Argentina from thermoelectric plants that were not being used to meet the SIN, in a commercial modality, and from surplus generation from hydroelectric plants, in a swap modality. .
The prospective studies presented, which include evaluations extended until the end of November 2022, indicate full compliance both in terms of energy and power throughout the period, without the need to use the operating reserve.
Regarding the electrical energy service to the state of Roraima, the ONS informed that operational measures were adopted that led to the stabilization of the system, which has experienced the transition of part of the generation of diesel thermoelectric plants to natural gas. The logistics of transporting fuel to the plants were evaluated, including the adverse traffic conditions currently experienced on the BR-174, on the stretch that connects Manaus/AM to Boa Vista/RR, during this period of heavy rains in the region, and the Replacement of the Roraima Electric System Generator Park.
Subsequently, the CMSE decided that the amount of fuel available for the generation of thermal plants serving Boa Vista/RR should be maintained at an amount equivalent to the total operational storage capacity, that is, 10.34 million liters, until the entry in commercial operation of a structural solution that meets that system, in order to add reliability to the supply. In addition, the Committee decided that the Floresta thermoelectric plant should be kept in the system for at least another 30 (thirty) days for the CMSE to reassess the transition plan for the winning plants of Auction 01/2019, which should take place in a new collegiate meeting.
The CMSE reaffirmed its commitment to guaranteeing safety and reliability in the supply of electricity in the country in the current and future scenario, through the continuity of the permanent monitoring carried out, supported by studies carried out from the different perspectives of the Brazilian electricity sector, and with the synergistic and robust action of the institutions that make up the Committee.
Technical Information :
Hydrometeorological Conditions : the month of May was marked by the absence of precipitation in most of the Southeast, Midwest and Northeast regions. In the South region, rainfall had volumes between average and above average in the Uruguay and Iguau river basins, but below average in the incremental to UHE Itaipu. In relation to Affluent Natural Energy (ENA), values ??below the historical average for the month of May were verified in all subsystems, with the exception of the South. Considering the aggregate ENA of the National Interconnected System (SIN), in May a value close to 86% of the Long Term Average (MLT) was verified. For the month of June, the forecast indicates an ENA below the historical average, again, for all subsystems with the exception of the South. Regarding the SIN, the monthly forecast for June is 93% of the MLT.
Stored Energy : at the end of May, equivalent storage of 66.4%, 90.3%, 94.3% and 98.9% were verified in the Southeast/Midwest, South, Northeast and North subsystems, respectively, and the forecast for the end of June in these subsystems is 66.1%, 93.9%, 92.0% and 99.1% of the EARmax.
Expansion of Generation and Transmission : the expansion verified in May 2022 was of approximately 596 MW of installed capacity for centralized electricity generation, 1,012 km of transmission lines and 1,250 MVA of transformation capacity. Thus, in 2022, the expansion totaled 2,164 MW of installed centralized generation capacity, 4,702 km of transmission lines and 10,694 MVA of transformation capacity. Regarding distributed generation, the expansion verified in 2022 was 2,440 MW, reaching a total of approximately 11.0 GW installed in the country.
The CMSE, within its legal competence, will continue to monitor, on a permanent basis, the supply conditions and service to the country's electric energy market, adopting measures to guarantee the supply of electric energy. The final definitions of today's CMSE meeting, as well as the other deliberations of the Board, will be consolidated in minutes duly approved by all the members of the board and published in accordance with the bylaws.