Itaipu operates with maximum load and helps Brazil and Paraguay meet record demand

Tuesday, January 29, 2019

Brazil closed the last week with two consecutive records of hourly consumption in the National Interconnected System (SIN). This means that we never consumed so much energy in the country at the same time. The peak was on Wednesday afternoon (23), with a peak demand of 89,114 MW at 02:55 PM - surpassing the previous day's record at 87:29 MW at 3:26 pm. In January, four historical records were broken, according to the ONS System National Operator.

The National Electricity Administration (Ande), responsible for the operation of the system in Paraguay, also recorded a new historical record that same Wednesday, 5 minutes before the Brazilian event (at 15:50), with a consumption of 3,451 MW.

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On that same day, there were also two new records of supply from the Itaipu plant to Paraguay. The hourly record, with 3,035 MW at 16h, and the daily record, with 2,687 average MW.

At the time of the Brazilian and Paraguayan records, the Itaipu plant operated with total machinery availability and maximum load, about 14,000 MW. To do this, all 20 generating units were producing power.

Chief technical director Mauro Corbellini explained that Itaipu's biggest contribution in these high-consumption conditions is the plant's ability to deliver power, that is, to produce a lot of energy in a short time.

This capacity of Itaipu, adds the director, helps the electrical system to maintain the balance between consumption and production. "If consumption exceeds the country's ability to deliver instantaneous power, and frequency (60Hz in Brazil and 50Hz in Paraguay) falls significantly, there could be a collapse in the system. The role of Itaipu is fundamental so that the balance is maintained . "


Operation Superintendent Celso Torino said that some factors explain the high consumption at this time of year, both in Brazil and in Paraguay. The summer heat is the main one, causing the use of air conditioners to become more intense.

In addition, it is at this time of year that countries return to activities after the holiday period - especially industry, commerce and schools.

"In the past, in Brazil, the peak energy consumption was at 7:00 p.m., when the entrance of public lighting coincided with the operation of the trade, industry and use of electric shower. Today it is around 3:00 p.m., because the relevance is no longer of public lighting, but rather of air conditioning, "he said.

This Itaipu release was published using an automatic translation system.