Trees and vegetation growing near power lines cause about 20% of unplanned outages to your power supply, and are dangerous.

Even when trees appear to be well clear of the lines, they still pose a threat to the power supply during storms and strong winds.

If your trees are encroaching on the lines, or if you have received a letter from Unison or Unison Contracting informing you of the problem, attend to the problem immediately.

BEWARE! This is hazardous work and only permissible under the Health & Safety Act. In most cases it will need to be carried out by a specialist contractor. These contractors are fully qualified and experienced in tree trimming around live power lines.

If you trim or fell any tree/s that directly or indirectly cause a fault, you will be liable for all costs associated with that fault.

CALL UNISON FIRST  |  0800 2 UNISON  |  0800 286 476

To keep you better informed about trees, vegetation and power lines, we have prepared the following information.

The Electricity Regulations  Who Owns the Power Lines?  Danger of Trees Near Power Lines  Growth Limit and Notice Zones  Cut or Trim Notices  First Cut or Trim Notices  No Interest Notice  Trees FAQs

Please refer to the tables in these guides for minimum allowable distances between trees and conductors of different voltages.