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Transmission

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Red Eléctrica transmissions high voltage power. To do so, it manages the electrical infrastructures that make up the transmission grid and connect the generation plants to the points where the power is distributed to consumers.

Red Eléctrica is the manager of the transmission grid and, as such, acts as the sole transmissioner on an exclusive basis. In 2010, Red Eléctrica has carried out, in compliance with Law 17/2007, the acquisition of the extrapeninsular assets (Balearic and Canary Islands), as well as those transmission assets on the peninsula that were property of the electric utility companies. This supposes the definitive consolidation of its position as sole transmissioner and electricity system operator.

Red Eléctrica's peninsular transmission grid is composed of more than 38,000 kilometres of high voltage electrical lines and more than 4,500 substations positions, and has more than 72,000 MVA of transformation capacity. These assets make up a safe and reliable meshed grid that offers the highest service quality rates to the electrical system.

As the manager of the transmission grid, Red Eléctrica is responsible for developing and enlarging the grid, for maintaining it on a uniform and consistent basis to provide the required availability and reliability, for managing the transmission of electricity between external systems and the peninsula and for guaranteeing third party access to the transmission grid under equal conditions.

Installations in service

Transmission grid (peninsular and extrapeninsular)
Km de circuit 2006 2007 2008 2009 2010
400 kV 17,005 17,134 17,686 17,977 18,764
220 kV 16,420 16,457 16,558 16,698 17,352
150-132 kV 22 22 22 22 227
150-132 kV 53 53 53 53 2,050
Total 33,499 33,666 34,319 34,750 38,393
Circuit bays at the substations (peninsular and extrapeninsular)
Number busbar connections 2006 2007 2008 2009 2010
400 kV 950 1,004 1,055 1,114 1,185
220 kV 1,961 2,034 2,103 2,267 2,657
150-132 kV 2 2 2 2 32
<132 kV 2 2 2 2 698
Total 2,915 3,042 3,162 3,385 4,572
Transformer capacity (peninsular and extrapeninsular)
Power (MVA) 2006 2007 2008 2009 2010
Total 56,009 58,459 62,859 66,259 72,432

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Lastest update: 04-April-2011