French authorities are investigating a possible arson attack after a widespread power outage struck the Alpes-Maritimes region on Saturday, disrupting electricity across western parts of southern France including Cannes during its world-renowned film festival. The national gendarmerie confirmed an active criminal probe into deliberately set fires that may have caused the blackout, though no suspects have been detained.
The Cannes Film Festival confirmed its prestigious closing ceremony would continue uninterrupted, with the Palais des Festivals switching to backup generators. “All scheduled events and screenings will proceed under normal conditions,” organizers stated, ensuring the festival’s climax remains unaffected for attendees and global audiences.
Regional officials reported that RTE France, the national electricity grid operator, was working urgently to restore power after the outage impacted key areas of the French Riviera. The disruption comes during peak tourist season, with thousands of visitors in Cannes for the film festival and related events.

Security Now Heightened Amid Terrorism and Sabotage Concerns
While investigators haven’t confirmed motives, the timing during a high-profile international event has raised security concerns. Southern France has faced previous infrastructure attacks, including the 2019 sabotage of electrical substations near Marseille that left 40,000 homes without power.
Local authorities are coordinating with national security services to determine if the incident connects to broader threats. The Alpes-Maritimes prefecture has activated emergency protocols, though no group has claimed responsibility for the outage.
Why It Matters
The blackout threatened one of France’s most lucrative annual events, with the Cannes Film Festival generating an estimated €200 million in economic impact. Organizers faced pressure to maintain operations as the festival represents France’s soft power in global cinema.
Several critics say the region’s electrical infrastructure remains vulnerable, with this being the third major outage in Provence-Alpes-Côte d’Azur since 2022.