A power outage at Edinburgh Airport has led to major disruption of flights and terminal services, leading to delays and long queues outside the terminal. A power cut is reported to have affected the terminal building and the main hall was plunged into darkness with only emergency lighting available for almost an hour. According to a report by the BBC, it was not possible to provide the usual ground services such as check-in or security during the outage. Back-up power systems also failed inside the terminal. The cause of the power failure is not yet known.