What are you responsible for?

In some cases, property owners are responsible for maintaining and repairing electrical lines and equipment on their property.

Line and equipment ownership is a complex issue; lines can be owned by MainPower or the property owner.

Ownership isn’t based on who paid for the line to be built. It depends on the agreements made and the legislation in place when the line was constructed, any legal agreements relating to the property or access, and whether the line crosses or supplies electricity to other properties.

Scroll down to find out more, or contact our team on 0800 30 90 80 to find out what your responsibilities are.

We’re here to help. Get in touch if you need help. Or, check out our FAQs.

What lines can you be responsible for?

There are three types of power lines: transmission, distribution, and service lines.

Individuals can’t own or be responsible for transmission or distribution lines, even if they are on private land. Most transmission lines are owned by Transpower (a state-owned enterprise), and distribution lines are owned by electricity distribution businesses, like MainPower. Transformers and other heavy infrastructure are usually owned by a transmission or distribution company.

However, service lines may be your responsibility.

Service lines

Service lines carry electricity from the distribution network to properties.

If you are the only consumer supplied by a service line and the line is located on your property, you likely own that line, which means you are responsible for the maintenance and/or repair of that line.

However, if the line supplies other consumers as well, a service line or a portion of a service line is owned by the electricity distribution business (MainPower).

Why does line ownership matter?

If you own a service line, you are responsible for its maintenance.

You are also likely responsible for the associated equipment and infrastructure surrounding the service line, such as poles and cables.

In most towns and cities, this is not a big responsibility. However, some rural properties have service lines that are several kilometres long. If you own a service line, you are responsible for arranging the repair and maintenance of the line and associated equipment. This also includes removing the line if it’s no longer needed.

Completing a visual check of poles and equipment

Property owners should carry out periodic visual checks to make sure their service lines, equipment, and infrastructure are in good order.

These checks should include checking that power lines are not close to trees. Click here to find out more about trees and power lines.

To ensure your safety, only MainPower-approved contractors are permitted to access service boxes, link boxes, and kiosks, and to climb poles and access pole fuses.

If you have completed a visual check of service lines or poles on your property, or of a MainPower asset, and you notice something you think is unsafe, call MainPower on 0800 30 90 80 immediately.

A printout of the information on this page is available here.

It is not always obvious who owns service lines. We can help you find out what your responsibilities are. You can get in touch here or by calling 0800 30 90 80.

We’re here to help

If you need some assistance or advice, please get in touch with our team.

Important notifications

Hot water load testing under way ahead of winter

Until mid‑April, we’re working closely with retailers to carry out hot water load testing as we prepare our network for the coming winter season.

These tests run for a couple of hours each day, Monday to Friday, with no testing taking place over weekends. Because each test window is relatively short, customers are unlikely to notice any changes to their hot water supply.

The purpose of this work is to help us better understand how much controllable load is available during the summer months. Gaining accurate insights now means we can model customer savings more effectively by reducing system load at peak times. It also helps us assess whether this load flexibility could assist Transpower in deferring an upcoming local transmission upgrade.

This testing is an important part of ensuring a resilient, efficient network that supports our community.

MainPower Trust elections

Voting is open for the 2026 MainPower Trust election.

Voting packs have been emailed or posted by Electionz.com to everyone who pays a power bill on the MainPower network. You need to have the unique ID provided to cast your vote.

If you haven’t received a voting pack, or can’t find it, you can get a replacement by contacting iro@electionz.com.  For full details of the candidates, visit mainpowertrust.co.nz/trustee-elections/

Make the most of this opportunity to have your say on the future of MainPower – and your community.

Voting closes midday Friday 6 March 2026. 

Privacy Policy

Is your outage not listed?

Troubleshoot your outage
Treat all lines as live during the outage period; power may be restored at any time. If you require further information, please call MainPower’s 24-hour faults line. To report an emergency, call 111.

Outage notifications

Hot water load testing under way ahead of winter

Until mid‑April, we’re working closely with retailers to carry out hot water load testing as we prepare our network for the coming winter season.

These tests run for a couple of hours each day, Monday to Friday, with no testing taking place over weekends. Because each test window is relatively short, customers are unlikely to notice any changes to their hot water supply.

The purpose of this work is to help us better understand how much controllable load is available during the summer months. Gaining accurate insights now means we can model customer savings more effectively by reducing system load at peak times. It also helps us assess whether this load flexibility could assist Transpower in deferring an upcoming local transmission upgrade.

This testing is an important part of ensuring a resilient, efficient network that supports our community.

MainPower Trust elections

Voting is open for the 2026 MainPower Trust election.

Voting packs have been emailed or posted by Electionz.com to everyone who pays a power bill on the MainPower network. You need to have the unique ID provided to cast your vote.

If you haven’t received a voting pack, or can’t find it, you can get a replacement by contacting iro@electionz.com.  For full details of the candidates, visit mainpowertrust.co.nz/trustee-elections/

Make the most of this opportunity to have your say on the future of MainPower – and your community.

Voting closes midday Friday 6 March 2026. 

Privacy Policy

Is your outage not listed?

Troubleshoot your outage
Treat all lines as live during the outage period; power may be restored at any time. If you require further information, please call MainPower’s 24-hour faults line. To report an emergency, call 111.

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