Italian energy giant Enel has officially requested an independent technical review to challenge a push by Brazil’s electricity watchdog, ANEEL, to strip the company of its power distribution license in São Paulo.
The defense filing comes after ANEEL unanimously moved forward with a forfeiture proceeding (known locally as caducidade), which threatens to terminate Enel’s contract or block its automatic renewal past 2028. The regulator’s clampdown follows intense government pressure and widespread public outrage over recurring structural failures, most notably a devastating December 2025 blackout that cut power to nearly 5 million residents following extreme storms.
Enel is arguing that the regulatory metrics used to gauge its service quality are flawed. Specifically, the utility wants the requested independent experts to evaluate the true severity of the December 2025 weather event. Enel contends that the storm was an unpreventable, historic anomaly and should not be unfairly compared to prior weather disruptions to prove that the company failed to meet its post-disaster operational targets. Recognizing the high stakes of the dispute, Enel has offered to fully finance the expert probe and collaborate with ANEEL to establish its technical parameters.
The potential loss of the São Paulo concession represents a massive financial crisis for the multinational utility. Financial auditors have warned that approximately €3.34 billion ($3.9 billion) in hard assets and nearly €600 million in corporate goodwill are on the line. Furthermore, credit rating agencies have already started downgrading Enel’s Brazilian units, pointing out that an early termination would heavily dent the group’s global profitability and could trigger early debt maturities.
While ANEEL continues to review the case, the ultimate decision on whether to seize the contract and potentially force a sale of the grid asset will rest with Brazil’s Ministry of Mines and Energy.