You joke but make a good point, most major installations have backup diesel powered generators to provide power for a certain limited but generous time. What h

You joke but make a good point, most major installations have backup diesel powered generators to provide power for a certain limited but generous time. What happened with Heathrows generators? Did they kick in? Do they have any? Edits: yes they did kick in as normal https://www.standard.co.uk/news/uk/heathrow-ed-miliband-national-grid-london-emergency-services-b1218124.html https://www.standard.co.uk/news/uk/heathrow-ed-miliband-nati... Note that usually backup generators are only for essentials like air traffic control, landing lights, and operating emergency stuff.