Heat wave: thermoelectric energy generation reaches highest level since the 2021 water crisis

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According to data from the National Electric System Operator (ONS), thermal plants generated an average of 16.4 gigawatts of energy at around 7:30 pm this Friday (17). Thermoelectric energy generation reached the highest level since the 2021 water crisis this Friday (17), according to data made available by the National Electric System Operator (ONS). Thermal plants generated approximately 16.4 gigawatts (GW) on average at around 7:30 pm this Friday. The last time the source had exceeded 16 GW of energy was in December 2021, when Brazil was facing water supply problems. Due to the heat wave that affects much of Brazil this week, the ONS has increased the dispatch of thermoelectric plants, which are more expensive. Thermoelectric plants are activated due to high energy consumption in a heat wave. With heat, there is greater demand for energy because people use more air conditioners, fans and refrigerators, for example. To g1, on Thursday (16), the ONS stated that the additional dispatch from the plants “is justified at specific times of greatest demand from society”. The operator stated that it has not yet activated 100% of the available thermal plants. In a note this Friday (17), the Brazilian Association of Thermoelectric Generators (Abraget) stated that there was also a dispatch from the Angra nuclear plant. “It was clear that once again the thermoelectric plants fulfilled their role, this time, for the electrical safety of the National Interconnected System (SIN)”, he wrote. According to Abraget, in the week before the heat wave, the average thermal generation was 7 GW. According to the ONS, energy generation by thermal plants was 9.4% in October and, until Thursday (16), the average generation was 9.7%. This week, energy demand broke two successive records: on Monday (13) and Tuesday (14), reaching 100.9 GW and 101.5 GW, in that order. This Friday (17), demand exceeded 101 GW again, but was below the record. This Friday (17), the interconnected system was being served by the following sources: Hydroelectric: 66.4% Thermal: 15% Wind: 13.3% Solar: 4% Nuclear: 1.2%

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