Electrical failure at Paris-Montparnasse station halts rail traffic across western France
A power outage in a supervision room halted all train movements at Paris-Montparnasse on 27 August 2026, causing three-hour delays and cascading cancellations on high-speed lines to western France.
Electrical failure halts station traffic
On the morning of Thursday, 27 August 2026, an electrical breakdown paralyzed all train operations at Paris-Montparnasse station. The disruption began at 10:30 when a power cut disabled a technical room supervising train departures and arrivals, located on the line between Montparnasse and Massy TGV. French Minister of Transport Philippe Tabarot announced the interruption on the social media platform X, attributing the shutdown to an electrical installation failure. Tabarot initially projected a three-hour disruption while emergency repairs were arranged. The shutdown occurred on a busy travel day during the final days of August, leaving thousands of passengers stranded during peak holiday return journeys ahead of the school year.
Network cancellations and regional transit impacts
The electrical fault caused cancellations and route modifications across the Atlantique high-speed line through 15:00, impacting both TGV INOUI and OUIGO operations. Long-distance rail connections serving western destinations, including Brittany, Nantes, and Bordeaux, suffered schedule collapses in both directions. Inbound trains scheduled to reach Paris before 12:00, including long-distance services originating in La Rochelle, Hendaye, and Tarbes, accumulated delays of up to three hours. Regional transit lines faced direct suspensions as Transilien Line N stopped operating between Paris-Montparnasse and Versailles-Chantiers until 14:00. Intermediate stations also felt the impact, with Le Mans station recording delays of up to 90 minutes on Paris-bound TGV trains shortly after 13:00. SNCF Réseau confirmed to AFP that no passenger trains remained trapped on the open tracks between stations.
- Power cut in the supervision room halts all train traffic at Paris-Montparnasse.
- TGV delays toward Paris reach up to 90 minutes at Le Mans station.
- Transilien Line N service resumes between Montparnasse and Versailles-Chantiers.
- Train traffic begins a progressive restart after hours of cancellations.
Operational response and gradual resumption
Technical teams from SNCF Réseau, the division responsible for railway tracks and catenary infrastructure, were deployed to the technical supervision room to address the electrical supply. Transport Minister Tabarot urged travelers planning to use the Paris terminal to check their train status online before arriving at the station.
fully mobilized to restore traffic conditions as quickly as possible
Train movements began a limited resumption around 15:00, though services remained disrupted throughout the late afternoon and evening. SNCF maintenance personnel continued interventions to recover all station tracks and clear blocked platforms.
Work is underway to recover all tracks in the station. Traffic will be able to resume very progressively in both directions.
Station congestion and schedule recovery
Conditions inside Paris-Montparnasse deteriorated quickly as thousands of stranded passengers crowded into Hall 1. Departure display boards replaced timetables with red crosses, while continuous queues formed at SNCF ticketing desks and stretched outside the main entrance. Travelers with suitcases and backpacks spilled onto the station forecourt and surrounding grass areas while awaiting updates. SNCF stated that service modifications, cancellations, and cascading delays would persist for several hours, with normal rail traffic not expected to return until late Thursday evening.
