Heathrow's available rooftop area is judged insufficient for solar panels to sustain the whole airport during an outage. Solar could still reduce normal electricity consumption. Continuous cooling loads are substantial because people and computers keep adding heat, and a facility of this size uses distribution voltages far above ordinary household supplies. Political decisions would determine funding, space and acceptable equipment, while engineering requirements would determine how to meet the load. The airport's aviation-kerosene stocks suggest a gas turbine able to burn the fuel already on site. This remains a proposed backup arrangement, with no claim that Heathrow had installed it.
Notable Point · 3:59:50-4:07:21
Designing backup power for an airport-scale load
Airport backup generation is constrained by megawatt demand, medium-voltage distribution, physical space, and a fuel supply that must remain available during the same emergency.