Electricity transmission

We are responsible for the development, maintenance, and renewal of the electricity transmission grid to make electricity safely accessible to the entire community. 

Dos operarios

We are the transmission company for the national electricity system

We connect generation centres with consumption points through a robust grid that transmits electricity at high voltage. Furthermore, we design, build, and maintain this grid to ensure its availability and reliability and to prepare it for connecting new generation sources. Thus, we are the cornerstone of a secure, high-quality, and increasingly sustainable power supply. 

Salvapajaros_baja

Our grid in detail 

Learn more about the transmission grid that covers Spain. It is made up of facilities that form a meshed system that provides electricity to the entire community with quality and security. 

Torres alta tensión con girasoles

We manage the grid sustainably

We develop infrastructure sustainably. Likewise, we are in permanent contact with the communities to protect their ecosystems, natural capital, and lifestyles with quality and security. 

Watch this video to find out more about our transmission grid in detail

Transmission projects in development

We are driving the ecological transition in Spain by advancing in the deployment of renewables, strengthening interconnections and storage solutions and with other strategic energy vectors.

Projects map is available only in Spanish.

mapa de españa

Featured facilities

Since 1985, we have been developing cutting-edge infrastructure. Indeed, many of them are pioneers at the international level. We face technical and technological challenges to ensure the transmission grid meets the needs of Spanish society. 

Transmission
Transmission
Tuneladora

Spain-France underground electricity interconnection 

A pioneering, complex, and exceptional project that crosses the Pyrenees through an 8.5-kilometre tunnel that doubled the electricity exchange capacity with France. 

Transmission
Transmission
Submarinista tendiendo cable submarino

First Peninsula-Balearic link 

This is a milestone for its singularity and technical complexity. Today, it connects the Balearic system with the one on the mainland, strengthening supply security and advancing the decarbonisation of the island. 

Transmission
Transmission
Costa canaria

Tenerife-La Gomera link

The future link, which we are developing, will be a turning point for the ecological transition of the Canary Islands. On the one hand, it provides the capacity to cover the island of La Gomera's total demand, and allows the integration of a new renewable quota from La Gomera into the Tenerife system.

Transmission
Transmission
Playa blanca Canarias

Lanzarote-Fuerteventura link

A link that decisively improves the security and quality of the supply of Lanzarote and Fuerteventura and facilitates their progress in the energy transition. Its commissioning has demonstrated the need to continue advancing in these essential infrastructures for the Canary electricity system.

Transmission
Transmission
Barco cablero entre Ibiza y Formentera

New Ibiza-Formentera link

This submarine interconnection covers total peak demand of the island of Formentera, reducing to the maximum its dependence on fossil fuels and making progress in the practical decarbonisation of electricity generation on the island.

Transmission
Transmission
Barco cablero Ibiza

Majorca-Ibiza link

This link enabled the union of the two existing electricity systems in the Balearic Islands, connecting them to the Iberian and European electricity markets through the connection with the mainland. The twin link posed a technological challenge as it was the longest and deepest AC link in the world when it was constructed.

Transmission
Transmission
Barco cablero en Mallorca

Majorca-Menorca link

Commissioned in 2020, it integrated the entire Balearic archipelago into a single interconnected electricity system. The submarine cable plays a substantial role in the energy transition process proposed for Menorca and the Balearic Islands as a whole.

Transmission
Transmission
Pasillo de instalación subterránea

Barajas, the first underground line 

We present the first 400 kV underground line, an internationally recognised project. 

The latest in electricity transmission 

News

Red Eléctrica commissions the new 220 kV Lousame-Tibo line to strengthen the electrical system in western Galicia

Red Eléctrica completes the approval process for the Antas sub-station, a key step towards finalising the eastern Andalusia electrical corridor

The second Peninsula-Balearic Islands link begins public consultation to define a project based on consensus with society

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Information about our facilities

Find all the information about the electricity transmission grid facilities. 

Salvapájaros de aspa giratoria

Find out how we design our projects

We design new infrastructures after detailed environmental studies of the environment where they are to be implemented.

Our regulatory framework

Red Eléctrica's activity, as TSO of the Spanish electricity system, is regulated by both national and European legislation. 

Electricity system data

Examine the primary metrics and utilise graphs and comparisons to assess and understand the trends within the Spanish electricity system.

Los datos del sistema eléctrico