National Grid’s chief executive has stated that Heathrow Airport had sufficient power supplies despite a fire that temporarily shut down its energy systems. The incident occurred on November 23, leading to flight disruptions and travel delays. According to the CEO, the grid’s backup systems ensured a stable supply of electricity to the airport, preventing widespread outages.
Source: https://www.ft.com/content/670758a0-6631-43c9-a828-7471ea128d5b