Activities

Activities

Grid manager and transmission agent

Red Eléctrica is responsible for the transmission of high voltage electricity in Spain. To do so, it manages the electricity infrastructures that make up the transmission grid and connects the power stations to the points where it is distributed to consumers.

Manager of the transmission grid

Law 17/2007, of 4 July, confirmed the status of Red Eléctrica as the manager of the transmission grid and attributed it the function of sole transmission agent under a regime of exclusivity. In compliance with this Law, in 2010 Red Eléctrica acquired the assets of the Balearic Islands and Canary Islands and the remaining assets on the Spanish peninsula that were pending transfer from the electric utility companies. This acquisition represented the definitive consolidation of the model of sole transmission agent and electricity system operator.

As manager of the transmission grid, Red Eléctrica is responsible for developing and enlarging the grid, carrying out its maintenance and managing the transmission of electricity between external systems and the Spanish peninsula and guaranteeing third party access to the transmission grid under equal conditions.

In-service facilities

The transmission grid of Red Eléctrica is comprised of more than 44,000 kilometres of high voltage electricity lines and more than 5,500 substation bays, and more than 92,000 MVA of transformer capacity. These assets make up a meshed grid that is secure and reliable that offers the highest level of service quality to the Spanish electricity system.

Transmission grid (peninsular and extra-peninsular) of Red Eléctrica. Data available at December 31, 2020

Km of circuit 2016 2017 2018 2019 2020
400kV 21,616 21,725 21,727 21,738 21,753
220kV 19,616 19,641 19,736 19,853 19,887
150 - 132 - 110kV 524 524 636 697 753
< 110kV 2,025 2,035 2,075 2,067 2,079
Total 43,781 43,925 44,173 44,356 44,471

Substation bays (peninsular and extra-peninsular) of Red Eléctrica. Data available at December 31, 2020

Number of bays 2016 2017 2018 2019 2020
400kV 1,450 1,476 1,498 1,535 1,556
220kV 3,196 3,217 3,264 3,352 3,381
150 - 132 - 110kV 99 125 130 151 164
< 110kV 826 856 906 925 956
Total 5,571 5,674 5,798 5,963 6,057

Transformer capacity (peninsular and extra-peninsular) of Red Eléctrica. Data available at December 31, 2020

Power (MVA) 2016 2017 2018 2019 2020
Total 87,238 88,348 91,130 92,465 93,545