
Keep your trees away from power lines
Trees can be a major hazard
Trees are one of the leading causes of power outages, both at individual properties and across the wider network. When branches grow too close to power lines, it can cause serious safety risks and disrupt supply.
- Vegetation that comes into contact with power lines can cause power surges, power outages and fire
- If a tree is in contact with power lines, stay clear and call us
- In high winds and storms, falling trees and branches can drop lines and cause power cuts
- Trees or vegetation too close to lines increases the fire risk, especially in hot, dry, and windy weather
The 4-metre safety rule
- Never attempt to trim or cut any tree growing within 4 metres of a power line.
- Working near live electricity is extremely hazardous without certified training.
- Only Northpower-approved contractors are qualified to work within this zone.
- Call us if you see a tree within 4 metres of a power line.
Who is responsible for tree trimming?
If a tree is growing on your private property, keeping it safely clear of power lines is usually your responsibility as the landowner.
Northpower conducts regular aerial and ground surveys across our 5,500km network to monitor tree growth. If we identify a tree on your property that poses a risk to power lines, we will notify you.
Need help? Our approved contractors can safely manage vegetation near power lines. If branches are within 4 metres of a line, do not DIY – contact an approved professional.
What to do if you see a tree hazard
While we regularly survey lines, we also rely on communities to help keep our network safe. Please contact us immediately if you see:
- Trees or vegetation growing closer than 4 metres to overhead power lines
- Branches damaged, broken, or hanging near lines after a storm
- Sparks, smoke, or vegetation posing an immediate risk to power lines
If a tree is touching a line or causing an immediate danger, stay at least 10 metres away and call us straight away.
Planning to dig near trees or lines?
If you are doing any excavation work or tree planting near underground infrastructure, make sure you have our latest network maps before you start. Visit beforeUdig or call 0800 248 344 to request free maps at least two working days before digging.


