Adolfo Suárez Madrid-Barajas airport consumes an average of 300 gigawatts/hour of electricity per year, around half a million litres of heating fuel per winter month and 100,000 litres of automobile diesel per year.
In recent years, measures have been implemented to optimise resources, thereby increasing savings without reducing energy efficiency. Here are some examples:
- Introduction of a fleet of gas-powered vehicles.
- 25 energy stabilising machines have been installed. Their function is to reduce the lighting level evenly and stabilise the supply voltage to lights. This has reduced the cost of replacements of lights and switching equipment.
- Photocells have been installed in the terminals with programmable timers, enabling the lighting to be disconnected when there is sufficient natural light or no passengers are present.
- All the escalators and mobile bridges have motion detectors.
- Halogen bulbs have been replaced by energy-saving bulbs and R12 condenser gas by an ecological and more efficient gas called R134.
- In the beacon area, the circuits have been adapted to maintain in service the taxiways associated with the operational configuration. (The replacement work on the taxiways of runway 14R/32L changed the beacons using 100, 65 and 45 W lamps for 40 W lamps).
- The beacon command and presentation system has also been adapted to automatically turn off the beacons and apron lighting for Ramps 5 and 6 from 11 pm to 7 am.