The electronic auction of BBCE reached a historic milestone in November 2026, driven by higher humidity and a sharp decline in contract prices.
The digital platform of BBCE recorded unprecedented activity on November 5, 2026, hitting the highest daily trading volume in its recent history.
A total of 1,097 MW of average capacity was traded across hundreds of transactions, resulting in a substantial financial amount not seen since the first half of the previous year.
This significant volume was accompanied by a steep depreciation in electricity futures contracts.
The movement directly reflected expectations of a more favorable hydrological regime in the country, fueled by projected rainfall and international macro‑energy discussions that influence the Brazilian power sector.
Price decline and hydrological outlook
The historic session was marked by widespread drops in agreements for the coming months.
The conventional contract with delivery to the Southeast for January 2027 led liquidity but experienced a sharp contraction.
Similar negative variations also affected the December and first‑quarter 2027 lots.
Projections released by ONS justify the downward trend in short‑term prices.
Models indicate rainfall well above historical averages in strategic regions, especially in the South and Southeast/Central‑West, while the North and Northeast are expected to see lower volumes.
“Prices traded in November are below those recorded in the third quarter, mainly due to rainfall in the Southern basins.”
Axia Energia confirmed this assessment during its quarterly review, noting that the company pre‑sold positions to take advantage of earlier, more attractive levels.
External factors and future impact
Beyond weather, the market closely monitors negotiations involving Itaipu power.
A proposal from ENBPar to change the demand projection methodology of Ande, Paraguay’s state utility, could affect the supply destined for Brazil from 2027 onward, reducing the available surplus.
Recent analyses by Itaú BBA suggest that this accounting change could push prices higher in the coming years, creating a counterbalance to the current tariff relief provided by abundant rainfall.
The current market dynamics reveal a transition period, where short‑term water abundance drives down costs, yet significant structural alerts coexist for medium‑term national energy planning.