Construction, energy and services

Construction of T4, supply of high-voltage renewable energy, emergency healthcare and assistance services for all passengers and users, and assistance service for Persons with Reduced Mobility (PRM)

Construction of T4

Construction of the terminal building located at the northern end of the Adolfo Suárez de Madrid Airport, which serves more than 47 million passengers a year, with a processing capacity of 10,400 passengers at peak times.

The terminal has an area of 470,261 m2, divided into six levels: three above ground for check-in, security, boarding and baggage claim; and three below ground for maintenance, baggage handling and passenger transport between buildings.

The terminal building consists of three parallel structures with three above-ground floors each; each structure extends below ground, coming together to form a single unit, which reduces in area the further it descends. The first structure is the Check-in facility (350 m long by 57 m wide); the second is the Processing facility – with the same dimensions – and the third is the Dock (1,142 m long by 39 m wide). The three structures are separated by vaults that provide natural light and orientation, enabling passengers to see and understand their surroundings while they move vertically through the hubs.

Shaped like a bird's wing, the roof is made of lightweight metal and consists of a steel frame and an aluminium cover with thermal and acoustic insulation; the inside features a false ceiling made of bamboo wood slats. It is supported by a central pillar, which is divided into four arms, and inclined Y-shaped end pillars above the main concrete structure. Its total surface area is over 150,000 m2.

The façade is transparent, with its full height made entirely of glass, and formed by aluminium crossbars hanging by the steel rod system on the roof. It has a surface area of over 40,000 m2 along the more than 2,890 m perimeter.

Supply of high-voltage renewable energy

ACCIONA has been awarded the majority of the power supply put out to tender by Aena for the year 2020, with an estimated energy volume of 728 gigawatt hours (GWh).

Specifically, ACCIONA was awarded four of the seven lots put out to tender by the airport operator. This represents 76 % of the total energy put out to tender and includes the high-voltage supply to all the Aena airports located in the Iberian Peninsula, including Adolfo Suárez Madrid-Barajas and Josep Tarradellas Barcelona-El Prat.

The contract will cover the year 2020, with the possibility of an extension for another year, subject to agreement between the two parties.

Like all the energy marketed by ACCIONA, the power delivered to Aena will be certified 100 % renewable by the Spanish National Securities Market Commission (CNMC). The use of clean energy at the levels indicated will prevent the emission into the atmosphere of more than 460,000 tonnes of CO2 – the main cause of climate change – from fossil fuel power plants, according to the Spanish energy generation mix.

 "It is great news that Aena has once again entrusted ACCIONA to supply 100 % renewable energy, and we are delighted to work with such an important client to cover its electricity consumption in a very competitive way while contributing to reducing its carbon footprint at the same time", remarked Santiago Gómez Ramos, Energy Management Director of ACCIONA.


Emergency healthcare and assistance services for all passengers and users at the Adolfo Suárez Madrid-Barajas Airport.

ACCIONA, through its Healthcare Services, provides healthcare transport services at the Adolfo Suárez Madrid-Barajas Airport, which serves more than 47 million passengers each year.

The service has 22 emergency technicians and works professionally with 10 doctors and seven nursing school graduates. It also has two mobile medical ICUs, two basic life support ambulances and two emergency service units.

Assistance service for Persons with Reduced Mobility (PRM)

Since 2018, ACCIONA has provided assistance services to persons with reduced mobility to facilitate air transport regardless of their disability or mobility issues and in the same conditions as the rest of the passengers.

The service incorporates the latest PRM assistance developments, such as the digitisation of the service and the geolocation of the means of transport, with the goal of improving knowledge in real time and, therefore, the service offered to passengers.

The assistance service for Persons with Reduced Mobility, also known as 'Sin Barreras', is the highest-rated of all, based on the surveys conducted periodically in Aena airports, with a score of 4.8 out of 5.

Other ACCIONA projects

All of our projects