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, 2018

Km of circuit 2014 2015 2016 2017 2018
400kV 21,090 21,181 21,616 21,725 21,727
220kV 19,330 19,523 19,616 19,641 19,736
150 - 132 - 110kV 272 398 524 524 636
< 110kV 2,015 2,023 2,025 2,035 2,075
Total 42,707 43,124 43,781 43,925 44,173

Substation bays (peninsular and extra-peninsular) of Red Eléctrica. Data available at December 31, 2018

Number of bays 2014 2015 2016 2017 2018
400kV 1,386 1,433 1,450 1,476 1,498
220kV 3,121 3,168 3,196 3,217 3,264
150 - 132 - 110kV 67 99 99 125 130
< 110kV 798 808 826 856 906
Total 5,372 5,508 5,571 5,674 5,798

Transformer capacity (peninsular and extra-peninsular) of Red Eléctrica. Data available at December 31, 2018

Power (MVA) 2014 2015 2016 2017 2018
Total 87,053 87,908 88,508 89,618 92,400