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 88,000 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 21,094 21,184 21,619 21,728 21,730
220kV 19,192 19,386 19,479 19,507 19,619
150 - 132 - 110kV 272 398 523 523 637
< 110kV 2,015 2,023 2,025 2,034 2,083
Total 42,572 42,989 43,646 43,793 44,069

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

Number of bays 2014 2015 2016 2017 2018
400kV 1,394 1,441 1,458 1,484 1,506
220kV 3,077 3,124 3,152 3,180 3,236
150 - 132 - 110kV 52 84 84 110 130
< 110kV 769 789 797 827 878
Total 5,292 5,428 5,491 5,601 5,750

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

Power (MVA) 2014 2015 2016 2017 2018
Total 83,939 84,544 85,444 86,254 88,846