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Major projects

Read more about some of our major projects.

Introduction to the major projects can be added here.

Thongcaster Road Solar Project

MainPower has the required consents to construct a solar farm on a 10-hectare site at Thongcaster Road. When complete, the…

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Cheviot to Oaro Sub-Transmission Line Upgrade

MainPower’s sub-transmission line between Oaro and Cheviot is constructed at 66 kV but is currently operating at 33 kV. This…

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Amberley Zone Substation

In early 2025 we will begin construction on a new substation at 41 Reserve Road, Balcairn. In February and March…

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Hanmer Springs Sub-Transmission Line Upgrade

We are upgrading the line that supplies electricity to Hanmer Springs from 33 kV to 66 kV. While Hanmer Springs…

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Hanmer Springs Substation

As part of MainPower’s planning for future capacity, as well as the retirement of end-of-life assets, we are going to…

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And, as always; we’re happy to assist, get in touch if you have any questions.

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We’re here to help you navigate the terminology and process.

Rather than starting a form without really knowing what you’ll need, we would love you to just get in touch.

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Outage notifications

WIND WARNING AND OUTAGES - updated 22/10/25

Due to high winds yesterday, there are a number of power outages on the MainPower network. Our teams are working to restore power as safely and quickly as possible.

There is a significant weather event due to impact the network tomorrow, Thursday 23 October. Customers should prepare for power outages that may last some days.

Medically dependent customers should ensure their power retailer has their most current information, have spoken to their medical professional and are prepared to relocate if needed.

For the most recent updates on outrages, please check our outage map.

We appreciate your understanding and patience during this time.

Treat all power lines as live. Power can be restored at any time. To report an outage, call 0800 30 90 80.

Outages
0800 30 90 80

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

WIND WARNING AND OUTAGES - updated 22/10/25

Due to high winds yesterday, there are a number of power outages on the MainPower network. Our teams are working to restore power as safely and quickly as possible.

There is a significant weather event due to impact the network tomorrow, Thursday 23 October. Customers should prepare for power outages that may last some days.

Medically dependent customers should ensure their power retailer has their most current information, have spoken to their medical professional and are prepared to relocate if needed.

For the most recent updates on outrages, please check our outage map.

We appreciate your understanding and patience during this time.

Treat all power lines as live. Power can be restored at any time. To report an outage, call 0800 30 90 80.

Outages
0800 30 90 80

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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0800 30 90 80
Outages
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