Brazilian power demand fell by 3.4pc in October over the same month last year to an average of 68,793 MW, according to national power operator ONS.
Power demand fell by 2.7pc compared to September levels.
The lower demand is tied to the drop in temperatures in October, particularly in the southeast, center-west and south regions. The grid operator says temperatures are unusually low for this time of the year.
Consumption was also influenced by the decrease in overall domestic economic activity, which was affected by a shortage of materials and high prices in the country.
Total power demand for the 12 months ended 31 October was up by 4.5pc from a year earlier.