Looks like the original source is this: gov.br/…/alexandre-silveira-celebra-recorde-de-ca…

O Sistema Interligado Nacional registrou consumo recorde de energia nesta quinta-feira (7/2). Às 14h15, a carga total foi de 101.860 megawatt (MW), com 92,4% de fornecimento por fontes renováveis, especialmente usinas hidrelétricas, usinas eólicas, usinas solares e micro e minigeração distribuída, segundo dados do Operador Nacional do Sistema Elétrico (ONS).

Rough translation:

The Sistema Interligado Nacional (“Interconnected National System”) registered record energy consumption this wednesday (7/2). At 14h15, the total load was of 101.860 megawatt (MW), with 92,4% provided by renewable sources, in particular hydroeletric plants, wind plants, solar plants plus micro and mini distributed generation, according to data from the Operator Nacional do Sistema Elétrico (“National Electric System Operator”) (ONS).

So if I’m understanding correcty this was peak generation.