Unison urges property owners to trim trees near power lines this summer

People are asked to make sure their trees are trimmed so they don't interfere with powerlines.

As summer temperatures rise, communities and property owners are encouraged to to take proactive steps to keep trees and vegetation clear of power lines.

Trees growing too close to power lines can cause extended unplanned power outages, create safety issues, and in some cases cause fires, lines company Unison said.

By regularly checking and trimming vegetation near power lines, you can help protect your property and keep the electricity network safe and reliable.

Unison network and operations general manger Gagan Chadha said managing vegetation near power lines was essential for a safe and reliable electricity network.

“Around 20% of unplanned power outages are caused by vegetation such as trees, plants and vines growing too close to power lines.

“These situations can lead to prolonged outages, serious safety issues, and even fires during dry conditions. By keeping vegetation clear, you’re helping protect your property and supporting the resilience of our electricity network.”

Property owners were legally responsible for ensuring trees on their land do not get too close to power lines.

Recent updates to safety regulations, introduced late last year, have increased minimum clearance distances, making it important to check your property this summer.

What you can do

• Plant wisely: Avoid planting near power lines if possible. If planting is necessary, choose the right species. Unison provides guidance at www.unison.co.nz/planting-guide.
• Check your property: Regularly look for vegetation near power lines and ensure it is kept at least 4m clear.
• Call in the experts: If trimming or cutting is needed for your property, contact your local arborist. They’ll liaise with Unison before starting work to ensure it’s done safely.
• Report problem trees: Spot trees or vegetation touching power lines elsewhere? Contact Unison at 0800 2 UNISON (0800 2 86476) or visit www.unison.co.nz/problem-tree to report the issue.
• Know your responsibilities: Property owners must keep trees clear of power lines and underground power cables. Failure to maintain them could result in damage costs or fines. Learn more at www.unison.co.nz/tree-notices.

“We value trees and green spaces, but they need to be managed responsibly near power lines. By working together, we can reduce power outages and keep our communities safe,” Chadha said.

“As you enjoy the summer season, take a moment to check your property and help keep the power flowing safely.”

For more information or to report a problem tree, visit www.unison.co.nz/tree-safety or call 0800 2 UNISON (0800 2 86476).

- Content supplied by Unison