From time to time, we require access to land to inspect, maintain, and refurbish high voltage overhead lines. We have a duty to maintain the transmission system and power supplies, so we need quick and easy access to our equipment.
Our rights of access to do maintenance and refurbishment work are contained within the wayleave agreement or permanent easement with the landowner.
Overhead power lines are inspected on a routine basis both by foot and helicopter. We also have to climb pylons. Refurbishment of overhead lines can involve:
- Replacing conductors, insulators, and associated fittings;
- Painting pylons; and
- Works to the pylons and their foundations.
New technology is helping us to reduce the disruption caused by these things, but during major refurbishment safety scaffolding may need to be put up over properties, roads, and other development.
Minor refurbishments (such as repainting) are usually needed every seven years. Major works tend to happen much less frequently.
Find out more in the following documents:
Installation of high voltage underground cables
Overhead Transmission Lines
Guidance on Land Rights
Environmental and Engineering Surveys