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.

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 43,000 kilometres of high voltage electricity lines and more than 5,000 substation bays, and more than 85,000 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, 2017

Km of circuit 2013 2014 2015 2016 2017
400kV 20,639 21,094 21,184 21,619 21,728
220kV 19,053 19,192 19,386 19,479 19,507
150 - 132 - 110kV 272 272 398 523 523
< 110kV 2,014 2,015 2,023 2,025 2,035
Total 41,978 42,572 42,989 43,646 43,793

Substation bays (peninsular and extra-peninsular) of Red Eléctrica. Data available at December 31, 2017

Number of bays 2013 2014 2015 2016 2017
400kV 1,374 1,394 1,441 1,458 1,484
220kV 3,026 3,077 3,124 3,152 3,180
150 - 132 - 110kV 52 52 84 84 110
< 110kV 745 769 789 797 827
Total 5,197 5,292 5,428 5,491 5,601

Transformer capacity (peninsular and extra-peninsular) of Red Eléctrica. Data available at December 31, 2017

Power (MVA) 2013 2014 2015 2016 2017
Total 81,289 83,939 84,544 85,444 86,654