Close this search box.
Close this search box.


Business lines

We develop our activity in different energy sectors, carrying out projects of great importance. We offer a wide range of services for private and public clients.


Selection of some of the most relevant projects in each of our business lines.

Sustainability and Innovation

For Eiffage Energía Sistemas Group, low-carbon construction is one of the main targets, being also an opportunity to make a difference in terms of sustainability.


Corporate Social Responsibility is one of the essential practices for the company, being one of the main axes in all our branches and subsidiaries around the world.
This CSR policy must respect all employees, communities and also environment, with the integration of ethical values.


Working at Eiffage Energía Group is a great choice. We take care of our employees and offer them training and development within the company, even having the possibility of being part of the shareholders.


Find here the latest news from Eiffage Energía Sistemas Group and stay informed of our activity through LinkedIn.


Find here all our national and international branches.

Eiffage Energía will implement the works and maintenance of the stations of self-transformation and energy remote control of a section of the Madrid-Galicia AVE line.

ADIF (Spanish administrator of railway infrastructures) has awarded Eiffage Energía, in a UTE (Temporary Union of Companies) with Telice S.A., the works and maintenance of the stations of self-transformation and energy remote control of the Pedralba-Orense section of the Madrid-Galicia AVE line, with a budget of more than 10 million euros.

The works, which have just begun and that must be completed in 9 months, consist of the construction of various stations of self-transformation for the power supply system to the catenary provided by ADIF for the aforementioned High Speed section.

The 2×25 kV electrification system supplies power at a voltage of 50 kV between the contact line and the feeder and the rolling stock takes power at a voltage of 25 kV between the contact line and the rail, therefore, requiring the installation of 55/27.5kV ratio self-transformers approximately every 15 kilometres.

In order to accommodate these self-transformers and their auxiliary equipment, it is planned to build facilities located in the vicinity of the tracks and which will be of two types, depending on whether the self-transformers are installed near neutral zones between substations, final self-transformation stations (ATFs), or en route, stations of intermediate self-transformation (ATIs).

Each traction substation corresponds to an area, which includes the stations of self-transformation associated with the substation of the area and which is defined as the catenary path that, in normal, non-degraded mode of operation, is fed by said substation.

With regard to maintenance, which will take place for 24 months, once the construction of each of the self-transformation stations has been completed, work will be carried out, on the one hand, on predictive maintenance performed at predetermined intervals or in accordance with prescribed criteria, and aimed at reducing the probability of failure or degradation of the operation of an element; and corrective maintenance carried out after the recognition of a fault and intended to bring an element to a state in which it can perform the required function.