Overview
- Aneel confirmed on Friday that the tariff flag for June 2026 will remain yellow, meaning all consumers on the National Interconnected System (SIN) will pay an extra charge.
- The yellow flag adds R$1.885 for every 100 kWh consumed, a surcharge that would add about R$3.52 to a household bill using the reported average of 187 kWh.
- The regulator said the decision follows a dry season that reduced hydropower generation and required more expensive thermoelectric plants to be used.
- NOAA estimates an 82% chance of El Niño forming between May and July 2026, a development that could further reduce rainfall, stress reservoirs and increase the likelihood of continued or higher tariff bands.
- Consumers should watch monthly ONS and Aneel updates because the flag is reassessed each month and changes in rainfall or reservoir forecasts could move the system back to green or up to red tiers.