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Heathrow Airport Shuts Down Due to Power Outage from Substation Fire

The closure disrupts global air traffic as emergency services work to restore power and investigate the cause of the blaze.

Des passagers font la queue à l’intérieur du terminal des départs de l’aéroport de Londres-Heathrow, Terminal 3, à Londres.
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Overview

  • A fire at the Hayes electrical substation in West London caused a significant power outage, forcing Heathrow Airport to close for the entire day of March 21, 2025.
  • The fire affected 16,000 homes and businesses in addition to the airport, with efforts to restore electricity still ongoing.
  • Over 120 flights have been diverted to other airports, including Paris Charles de Gaulle and Shannon in Ireland, while numerous others have been canceled.
  • Emergency services deployed 70 firefighters and 10 fire engines, evacuating 150 people and establishing a 200-meter safety perimeter near the substation.
  • The cause of the fire remains under investigation, with Heathrow warning passengers to avoid traveling to the airport and anticipating disruptions in the coming days.