According to preliminary figures, in 2011, IBERDROLA checked around 85,000kilometres of its power lines in Spain. This campaign aims to reinforce security of supply and continue to improve the quality of service it offers all its clients.

The company inspected the very high-, high- and medium-voltage lines used to supply peak summer and winter electricity demand.

IBERDROLA carried out routine inspections of 27,500 kilometres of lines and rapid inspections of 15,500 kilometres. This type of review is to detect potential problems that could occur with components of this type of facility: insulators, conductors, iron fittings, pylons, etc., caused by lightning, fallen trees, construction work or buildings close to the lines, etc.

The company also conducted a comprehensive review of the electricity pylons and the measurements required to detect potential anomalies, on 24,000 kilometres of its power lines throughout the country.

IBERDROLA also conducted an infrared examination of around a further  14,000 kilometres of lines, an analysis that entails examining the power infrastructure using infrared cameras carried by helicopter or by a team of workers on foot. The temperatures of the installations are measured to detect and correct any points where they are too high –hot spots - and ensure supply in the event of a peak in demand.

Finally, IBERDROLA carried out cleaning work in power line corridors, felling and cutting back trees threatening to hit the power lines, covering nearly 4,000 kilometres.

The inspection campaign forms part of IBERDROLA's endeavours to improve its electricity installations as a means of enhancing the quality and security supply.

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