MainPower NZ Ltd

Please note, at COVID-19 Alert Level 1, all planned outages will proceed as scheduled.


We recognise outages may be difficult for some customers to manage, however our priority is ensuring we can maintain a safe, reliable, quality supply of electricity throughout the network.


MainPower carries out regular maintenance work on the network. This work is essential for ensuring a safe, reliable supply of electricity is maintained.

If you will be affected by a planned outage, your electricity retailer will send you a letter in advance, so you can make other arrangements.



Planned outages for Monday 18 January

Date Location Reason Power off Power on Status Ref Comments
18 Jan 21 Taylors Rd - Clarkville Pole And Tranformer Site New Installation 09:00 16:00 Pending J.20.12.0169
18 Jan 21 Leithfield Pole Replacement 09:30 16:30 Pending J.20.12.0189
18 Jan 21 Leithfield Beach - Leithfield Pole Replacement 05:00 05:30 Pending J.20.12.0187
18 Jan 21 Leithfield Beach - Leithfield Pole Replacement 17:00 17:30 Pending J.20.12.0188
Date Location Reason Power off Power on Status Ref Comments
19 Jan 21 Wrights Road - Kaiapoi Network Alterations 21:00 23:00 Confirmed J.20.12.0191
19 Jan 21 Church St - High St - Oxford Service Box Replacement 09:00 16:00 Confirmed J.20.12.0190
19 Jan 21 Fawcetts Rd - Ashley Pole Replacement 08:30 16:30 Confirmed J.20.12.0205
19 Jan 21 High St - Oxford Service Box Replacement 09:00 16:00 Confirmed J.20.12.0190
20 Jan 21 Main St - Oxford Service Box Replacement 09:00 16:00 Confirmed J.20.12.0192
20 Jan 21 Duffs Road - Balcairn Pole Replacement 09:00 16:30 Confirmed J.20.12.0207
20 Jan 21 Main St - Oxford Service Box Replacement 09:00 16:00 Confirmed J.20.12.0192
21 Jan 21 Park Avenue - Oxford Service Box Replacement 09:00 16:00 Confirmed J.20.12.0237
21 Jan 21 Park Avenue - Oxford Service Box Replacement 09:00 16:00 Confirmed J.20.12.0237
21 Jan 21 Park Ave - Oxford Service Box Replacement 09:00 16:00 Confirmed J.20.12.0237
21 Jan 21 Park Avenue - Oxford Service Box Replacement 09:00 16:00 Confirmed J.20.12.0237
21 Jan 21 Munro Road - Cheviot Line Upgrade 09:00 17:30 Confirmed J.20.12.0209
22 Jan 21 Plaskett Road - Fernside Pole Replacement 08:30 16:30 Pending J.20.12.0219
22 Jan 21 Criglingtons Road - Sefton Pole Replacement 08:30 15:30 Pending J.20.12.0214
25 Jan 21 West Belt Rangiora Pole Replacement 09:00 16:00 Pending J.21.01.0030
26 Jan 21 Main St Oxford Service Box Replacement 09:00 16:00 Pending J.21.01.0032
26 Jan 21 Park Ave Oxford Service Box Replacement 09:00 16:00 Pending J.21.01.0031
26 Jan 21 Lower Sefton Rd Ashley Pole Replacement 09:00 16:00 Pending J.21.01.0025
26 Jan 21 Main St Oxford Service Box Replacement 09:00 16:00 Pending J.21.01.0032
26 Jan 21 Hilton St Kaiapoi Cable Livening 09:00 16:00 Pending J.21.01.0029
26 Jan 21 Loburn Terrace Rd Loburn Line Upgrade 08:30 17:00 Pending J.21.01.0022
26 Jan 21 Park Ave Service Box Replacement 09:00 16:00 Pending J.21.01.0031
27 Jan 21 Overtons Rd Scargill Transformer Alterations 10:00 16:00 Pending J.21.01.0042
28 Jan 21 Amberley Beach Rd Amberley Switchgear Maintenance 09:00 15:00 Pending J.21.01.0040
28 Jan 21 Carters Rd Amberley Switchgear Maintenance 09:00 15:00 Pending J.21.01.0040
28 Jan 21 Douglas Rd Amberley Pole Maintenance 09:00 16:00 Pending J.21.01.0046
28 Jan 21 Upper Sefton Rd Sefton Pole Replacement 08:30 15:30 Pending J.21.01.0038
28 Jan 21 Chamberlain Ave Amberley Beach Pole Relocation 08:30 16:30 Pending J.21.01.0039
28 Jan 21 Courage Rd Amberley Pole Maintenance 09:00 15:30 Pending J.21.01.0044
28 Jan 21 Courage Rd Amberley Pole Maintenance 09:00 15:30 Pending J.21.01.0044
29 Jan 21 Stanton Rd Amberley Line Upgrade 09:00 17:00 Pending J.21.01.0054
29 Jan 21 North Eyre Rd Bennetts Pole Replacement 09:00 16:00 Pending J.21.01.0047
Show all
Date Location Reason Power off Power on Status Ref Comments
14 Jan 21 Lulus Lane - Mt Lyford Service Box Relocation 09:00 16:00 Pending J.20.12.0166
12 Jan 21 Ivory St - Rangiora Network Upgrade 09:00 16:00 Complete J.20.12.0125
22 Dec 20 Mill Road - Kaikoura Cable Livening 09:00 11:00 Complete J.20.12.0053 Deferred from 21 Dec 20
22 Dec 20 Johns Rd Rangiora Pole Replacement 08:30 16:00 Complete J.20.11.0429
22 Dec 20 Sherwood Rd - Waiau Line Reconduct 10:00 15:00 Complete J.20.12.0101
22 Dec 20 Johns Rd Rangiora Pole Replacement 08:30 16:00 Complete J.20.11.0429
22 Dec 20 Loburn Kowhai Rd Transformer Site new Installation 09:00 15:00 Complete J.20.11.0433 Deferred from 21 Dec 20
22 Dec 20 Smith St Kaiapoi Switchgear Maintenance 09:00 13:00 Complete J.20.11.0381
22 Dec 20 Woodend Rd Woodend Pole Replacement 08:00 16:30 Complete J.20.12.0009
22 Dec 20 Cemetary Rd Culverden Pole Replacement 09:30 16:00 Complete J.20.11.0382
21 Dec 20 Lewis Pass Rd Lewis Pass Connection / disc of generation 17:00 18:00 Complete J.20.11.0375
21 Dec 20 Charles St Kaiapoi Network Alterations 09:00 12:00 Cancelled J.20.11.0434
21 Dec 20 Mill Road - Kaikoura Cable Livening 09:00 11:00 Complete J.20.12.0053 Deferred To 22 Dec 20
21 Dec 20 Green Rd Rotherham Pole Replacement 09:30 16:00 Complete J.20.11.0427
21 Dec 20 Hanmer Springs Hot Pools Customer Supply Maintenance 18:00 21:00 Complete J.20.12.0185
21 Dec 20 Courage Rd Amberley Pole Replacement 09:00 16:00 Complete J.20.11.0421
21 Dec 20 North Eyre Rd Tree Cutting 09:00 12:00 Complete J.20.12.0097
21 Dec 20 Loburn Kowhai Rd Transformer Site new Installation 09:00 15:00 Complete J.20.11.0433 Deferred To 22 Dec 20
21 Dec 20 Lewis Pass Rd Lewis Pass Connection / disc of generation 08:00 09:00 Complete J.20.11.0373
21 Dec 20 Lewis Pass Rd Lewis Pass Pole Replacement 09:00 16:00 Complete J.20.11.0374
21 Dec 20 Courage Rd Amberley Pole Replacement 09:00 16:00 Complete J.20.11.0421
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Outages FAQS

What should I do during a planned power outage?

If you will be affected by a planned outage, your electricity retailer will send you a letter in advance, so you can make other arrangements.

Planned outages are also listed on our website, visit the planned outages page.

What should I do if I have no hot water?

After an outage, it can take up to 6 hours for a hot water cylinder to reheat once power has been restored after an outage. If you have no hot water:

  • Check that your hot water cylinder is on.
  • If your hot water cylinder is heated by gas then contact a registered plumber.
  • If your hot water cylinder is heated by electricity then please call MainPower on 0800 30 90 80.


What is ripple control?

MainPower may use ripple control at times to manage load on our network. If you have a ‘controlled circuit’ in your home it will probably be connected to your hot water cylinder. The ripple relay is used to switch water heater power off at peak times - like on cold winter nights when demand for electricity is highest and at times when faults mean less power is available in the local area.


MainPower provide a 24 hour fault response service. Please note, some fault response services may incur a cost, though this is generally only the case when the customer's property or actions have caused the fault.

Who is a priority customer?

Special consideration is given to the continuity of supply to customers whose health or livelihood could be adversely affected by an interruption. Priority customers include those who maintain essential services as well as medically dependent customers.


Customers with serious medical conditions, who rely on continuity of supply to support life, are treated as priority customers. Every effort is made to maintain continuity of supply and, if necessary, to advise them of any interruptions to supply so that alternate arrangements can be made. If you are a medically dependent customer, please ensure we are aware of your needs. You can provide this information online. Or, contact us on 0800 30 90 80.

Why do power outages occur?

There are two types of power outage, planned and unplanned.


Planned power outages occur when we need to complete maintenance work on the network. If you will be affected by a planned outage, you will receive a notification from your chosen electricity retailer in advance.


Unplanned power outages occur when unforeseen circumstances cause damage to the network (e.g. car accidents, tree branches or other debris being blown into power lines etc.).

What can my business do to be prepared for a power outage?

  • Check your terms and conditions with your electricity retailer - it will detail notification periods for planned electricity network outages and any compensation clauses.
  • Check your insurance provisions – how long does power need to be off before the policy covers you.
  • Have a good back up plan and ensure your staff are trained.
  • Consider the use of manual eftpos and credit card options.
  • Can your site be supplied by a generator – know your capacity requirements, connection options and generator hire contact details.
  • Have alternative locations for storage of perishable goods and freezer blankets.
  • Have back-up alternative locations to work from and phone diversions to mobiles contingency in place and when the power comes on understand what equipment needs resetting.

Does MainPower charge for callouts?

MainPower provides a 24-hour fault response service. When a customer’s property or actions have caused the fault, the responsible customer will be charged a call out fee.


Call outs caused by a MainPower network fault will not incur a fee.


MainPower call out fees

  • During normal working hours (7:30 a.m. – 5:00 p.m. Monday-Friday)
    • $176+GST minimum for up to two hours, plus travel (charged per kilometer)
    • Additional charges will be billed for any equipment required (e.g. replacement power pole) and time exceeding the initial two hour call out period. Additional time between 7:30am-5pm will be charged at our standard rate ($88+GST per hour).
  • After-hours
    • $264+GST minimum for up to two hours, plus travel (charged per kilometer)
    • Additional charges will be billed for any equipment required (e.g. replacement power pole) and time exceeding the initial two hour call out period. Time will be charged at our after-hours rate ($132+GST per hour).

All chargeable call outs will incur a minimum fee for a two hour period (travel time inclusive). Where we are required to stand staff down as a result of attendance at a fault we reserve the right to charge a stand down fee.

Does MainPower control irrigator load?

Irrigators on the MainPower network may be connected to our emergency load control system. Houses, sheds etc. are not connected to the emergency load control system.


Across our network, irrigators can use a large amount of electricity. In situations where MainPower needs to decrease the load on the network, we may turn off the electricity supply to irrigators. This is to ensure continued supply across the region and only happens in extremely rare, emergency situations. If it is necessary to turn off irrigators, MainPower will try to contact affected customers, however this may not always be possible in short-notice, emergency situations.