Aena is aware of its commitment to society in terms of protecting the environment and its essential contribution to sustainability. Therefore, its objectives include reducing energy consumption in its facilities, continuously improving the management of both these facilities and airport operations and maintenance, and achieving efficiency in their use by reducing greenhouse gas emissions and promoting a culture of sustainability, all within the framework of current legislation in each autonomous community.
To meet these goals, and in accordance with Royal Decree 56/2016, Aena conducts energy audits every four years at its airport centres and facilities, with all centres having been audited in 2025-2026. In addition, energy performance certificates are issued every ten years for its buildings, in accordance with Royal Decree 390/2021.
In addition to legal requirements, Aena has an Energy Management System (EMS) compliant with the UNE-EN ISO 50001:2018 standard as a tool for improving its energy performance. This system identifies significant energy uses within its operations and proposes opportunities for improvement.
Currently, five airports are certified, and the seven airports with the highest energy consumption in the network are in the process of implementation. This will allow, in the coming years, the systematic monitoring of energy consumption through the definition of baselines and energy performance indicators, demonstrating the improvements in energy efficiency achieved.
In the area of decarbonisation, Aena has defined a strategy to promote renewable thermal energy in the airport network, with the goal that, by 2030, all thermal energy consumed will come from renewable sources.
During 2025,feasibility studies were completed for extending technologies such as geothermal and aerothermal energy to all airports, which will reduce both energy demand and associated emissions.
As part of this strategy, the implementation of energy efficiency measures has continued, aimed at aligning demand with actual operations and technologically modernising facilities. These actions have reduced energy consumption per passenger by 16% compared to 2019, reaching 3.74 kWh per passenger, well below the initial target set for 2030.
Key initiatives include the progressive replacement of lighting fixtures with LED technology, improvements to climate control systems, modernisation of building envelopes, and the implementation of lighting and ventilation control and automation systems in terminal buildings and operational areas.
