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Brazil Lowers December Power Tariff Flag to Yellow, Cutting Surcharge on Bills

The change follows early wet‑season forecasts showing some improvement despite rainfall still below historical averages.

Overview

  • Aneel set the December signal to yellow, reducing the extra charge to R$1.885 per 100 kWh from R$4.46 in November.
  • The regulator says thermoelectric plants remain essential to meet demand, which sustains higher costs and market volatility.
  • This follows months under red flags, with level 2 in August–September and level 1 in October–November.
  • Aneel told G1 it is the first December with a yellow flag since 2019.
  • Sector forecasters including CCEE, Thymos and Warren Rena expected yellow in December and see a possible green in January, contingent on rainfall.