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 Saturday 24 April

No current outages

Date Location Reason Power off Power on Status Ref Comments
27 Apr 21 Neeves Road - Kaiapoi Pole And Tranformer Site New Installation 09:00 16:00 Pending J.21.03.0283
27 Apr 21 Saleyard Dr - Amberley Cable Livening 09:00 16:00 Pending J.21.04.0039
27 Apr 21 St Leonards Rd - Culverden Switchgear Maintenance 09:00 12:00 Pending J.21.03.0308 Deferred from 23 Apr 21
27 Apr 21 Courage Rd - Amberley Cable Livening 09:00 16:00 Pending J.21.04.0039
28 Apr 21 Stag and Spey Rd Pole Replacement 09:30 15:30 Pending J.21.03.0284
28 Apr 21 Medway Road Pole Replacement 09:30 15:00 Pending J.21.04.0044
29 Apr 21 Mt Brown Rd - Broomfield Pole Replacement 08:30 15:30 Pending J.21.03.0285
29 Apr 21 Homeview Rd - Cheviot Pole Replacement 08:30 16:30 Pending J.21.04.0051
02 May 21 Revells Rd - Kaiapoi Switchgear Maintenance 08:00 12:00 Pending J.21.04.0053
04 May 21 Cathedral Rd - Gore Bay Pole Replacement 08:30 16:00 Pending J.21.04.0103
05 May 21 Poyntzs Rd Oxford Pole Replacement 09:00 15:00 Pending J.21.04.0147
05 May 21 Sisters Rd - Parnassus Pole Repairs 09:00 12:00 Cancelled J.21.04.0123
05 May 21 Sisters Rd - Parnassus Pole Replacement 09:00 16:00 Pending J.21.04.0105
06 May 21 Hastings St Kaikoura Service Box Replacement 09:00 16:00 Pending J.21.04.0173
06 May 21 Hastings St Kaikoura Service Box Replacement 09:00 16:00 Pending J.21.04.0173
06 May 21 Parsonage Rd Woodend Pole Replacement 09:00 15:00 Pending J.21.04.0150
06 May 21 Chimera St - Pegasus Switchgear Maintenance 09:00 13:00 Pending J.21.04.0058
06 May 21 Transformer Upgrade 09:00 16:00 Pending J.21.04.0185
06 May 21 Leamington Rd - Cheviot Pole Replacement 09:00 16:00 Pending J.21.04.0109
07 May 21 Plaskett Rd Fernside Line Upgrade 10:00 15:00 Pending J.21.04.0176
07 May 21 Motunau Beach Rd Motunau Pole Relocation 09:00 14:00 Pending J.21.04.0175
07 May 21 Carrs Rd Loburn Transformer Upgrade 08:30 15:30 Pending J.21.04.0174
10 May 21 Loburn Whiterock Rd Pole Replacement 09:00 16:00 Pending J.21.04.0178
10 May 21 SH1 Woodend Line Alterations 09:00 16:00 Pending J.21.04.0177
11 May 21 SH1 Woodend Line Alterations 10:00 16:00 Pending J.21.04.0209
11 May 21 Jollies Pass Rd Hanmer Springs Network Alterations 10:00 14:00 Pending J.21.04.0225
12 May 21 German Rd Cust Transformer Upgrade 08:30 15:30 Pending J.21.04.0189
12 May 21 Beach Rd Kaiapoi Cable Livening 09:00 16:00 Pending J.21.04.0190
12 May 21 Acheron Heights Hanmer Springs Service Box Replacement 09:30 15:30 Pending J.21.04.0192
12 May 21 Ethelton Rd Ethelton Pole Replacement 10:00 15:00 Pending J.21.03.0175
13 May 21 Parish Rd Burnt Hill Pole Replacement 09:00 15:30 Pending J.21.04.0196
13 May 21 Cheviot St Waiau Pole Replacement 09:00 16:00 Pending J.21.04.0220
14 May 21 Motunau Beach Rd Motunau Beach Pole Replacement 09:00 16:00 Pending J.21.04.0221
18 May 21 Puhi Puhi Valley Pole Replacement 08:30 16:00 Pending J.21.04.0227
19 May 21 Bristol St Hanmer Switchgear Maintenance 09:30 15:30 Pending J.21.04.0224
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Date Location Reason Power off Power on Status Ref Comments
23 Apr 21 St Leonards Rd - Culverden Switchgear Maintenance 09:00 12:00 Pending J.21.03.0308 Deferred To 27 Apr 21
23 Apr 21 Fawcetts Rd Ashley Line Upgrade 08:30 15:30 Cancelled J.21.03.0261
23 Apr 21 Mill Rd Cable Livening 09:00 13:00 Complete J.21.04.0159
23 Apr 21 Mendip Rd Ferniehurst Transformer Upgrade 10:00 14:00 Complete J.21.03.0262
22 Apr 21 Karaka Rd Hawarden Pole Replacement 09:00 16:00 Complete J.21.03.0227
22 Apr 21 Railway St Rangiora Switchgear Maintenance 09:00 14:00 Complete J.21.03.0236
21 Apr 21 Domett Rd Domett Pole Replacement 08:30 16:30 Complete J.21.03.0257
21 Apr 21 Hurunui Mouth Rd Domett Pole Replacement 08:30 09:00 Complete J.21.03.0257
21 Apr 21 Dale Street - Kaiapoi Cable Livening 09:00 16:00 Complete J.21.04.0002
20 Apr 21 Mounseys Rd Oxford Pole Replacement 09:00 16:00 Complete J.21.03.0221
19 Apr 21 Victoria St Rangiora Service Box Replacement 09:00 15:00 Complete J.21.03.0259
19 Apr 21 Waiau West Rd Spotswood Line Reconduct 09:00 16:00 Complete J.21.03.0220
16 Apr 21 Parnassus Rd Pole Replacement 09:00 16:00 Complete J.21.03.0281
16 Apr 21 Ward Rd Cheviot Cable Livening 10:00 13:00 Cancelled J.21.03.0254
16 Apr 21 Mile Rd Okuku Pole Replacement 08:30 15:30 Complete J.21.03.0203
15 Apr 21 Mill Rd Oxford Customer Supply new Installation 08:30 16:30 Complete J.21.03.0230
15 Apr 21 Wrights Rd Oxford Line New 09:30 15:30 Complete J.21.03.0202
15 Apr 21 Main St Oxford Customer Supply new Installation 08:30 16:30 Complete J.21.03.0230
13 Apr 21 Okaihau Rd Tuahiwi Pole Replacement 08:30 15:30 Complete J.21.03.0201
13 Apr 21 Pembertons Rd Sefton Pole Replacement 08:30 15:30 Complete J.21.03.0178
13 Apr 21 Pembertons Rd Sefton Pole Replacement 08:30 15:30 Complete J.21.03.0178
12 Apr 21 Pattersons Rd Cust Network Alterations 09:00 16:00 Complete J.21.03.0174
12 Apr 21 Overtons Rd Scargill Transformer Alterations 10:00 16:00 Complete J.21.03.0170
09 Apr 21 West Belt Rangiora Service Box Replacement 09:00 16:00 Complete J.21.03.0173
09 Apr 21 Greens Rd Tuahiwi Pole Replacement 08:30 14:00 Complete J.21.03.0165
08 Apr 21 Woodend Beach Rd Woodend Transformer Upgrade 09:00 12:00 Complete J.21.03.0239
08 Apr 21 Johnson St - Kaiapoi Switchgear Maintenance 08:30 13:00 Complete J.21.03.0129
07 Apr 21 Cloudy Range Pole Repairs 13:00 15:00 Complete J.21.03.0115
07 Apr 21 Parnassus - Ferniehurst Pole Replacement 09:00 16:00 Complete J.21.03.0130
07 Apr 21 Inland Rd - Waiua Pole Replacement 09:00 16:00 Complete J.21.03.0114
06 Apr 21 Rakimarie Dr Pegasus Service Box Replacement 09:00 16:00 Complete J.21.03.0307
06 Apr 21 High St Rangiora Cable Repair 09:00 12:00 Complete J.21.03.0153 Deferred from 01 Apr 21
06 Apr 21 Douglas Road - Amberley Pole Replacement 09:00 15:00 Complete J.21.03.0125
06 Apr 21 Burnt Hill Rd - Oxford Cable New Installation 09:00 15:00 Complete J.21.03.0119
06 Apr 21 Douglas Road - Amberley Pole Replacement 09:00 15:00 Complete J.21.03.0125
06 Apr 21 Rakimarie Dr Pegasus Service Box Replacement 09:00 16:00 Complete J.21.03.0307
01 Apr 21 High St Rangiora Cable Repair 09:00 12:00 Complete J.21.03.0153 Deferred To 06 Apr 21
31 Mar 21 Highfield Street - Culverden Cable Repair 09:00 12:00 Complete J.21.03.0047
31 Mar 21 Parnassus Rd - Parnassus Pole Replacement 09:00 16:00 Cancelled J.21.03.0068
31 Mar 21 Heywards Rd - Clarkville Pole Repairs 10:00 16:00 Complete J.21.03.0064
31 Mar 21 Main North Road - Kaiapoi Cable Repair 16:00 18:00 Complete J.21.03.0048
31 Mar 21 Downs Rd - Eyrewell Forest Transformer Upgrade 09:00 15:30 Complete J.21.03.0113
30 Mar 21 Copper Beach Rd - Woodend Switchgear Maintenance 09:00 14:00 Complete J.21.03.0009
30 Mar 21 Mulcocks Road - Flaxton Cable Repair 09:00 12:00 Complete J.21.03.0045
30 Mar 21 Tulls Road - Waikuku Cable Repair 13:30 16:30 Complete J.21.03.0046
30 Mar 21 Omihi Rd - Greta Valley Pole Replacement 09:00 16:00 Complete J.21.03.0092
30 Mar 21 Gartys Rd - Cornwall Tce - Inland Scenic Rte 72 Pole Replacement 08:30 16:00 Complete J.21.03.0069
29 Mar 21 Ashley Gorge Road - Oxford Cable Repair 08:00 12:30 Complete J.21.03.0041
29 Mar 21 Two Chain Road - Swannanoa Cable Maintenance 13:00 16:00 Complete J.21.03.0043
29 Mar 21 South Eyre Road - Swannanoa Cable Repair 09:00 11:00 Complete J.21.03.0042
29 Mar 21 Lehmans Road - Fernside Cable Repair 13:30 16:00 Complete J.21.03.0044
29 Mar 21 Jeffs Drain Rd - Clarkville Pole Replacement 09:00 16:00 Complete J.21.03.0071
29 Mar 21 Parnassus Rd - Cheviot Pole Replacement 09:00 16:00 Complete J.21.03.0065
26 Mar 21 Copples Rd - Sefton Transformer Site new Installation 08:30 12:00 Complete J.21.03.0056
26 Mar 21 Blue Duck Rd - Kaikoura Earthing Upgrade 09:00 16:30 Complete J.21.03.0017
26 Mar 21 Inland Rd - Kaikoura Pole Replacement 09:00 14:00 Complete J.21.03.0032
26 Mar 21 Chrchill St - Davidson Tce - Kaikoura Pole Replacement 08:30 14:00 Complete J.21.03.0039
26 Mar 21 Postmans rd - Kaikoura Pole Replacement 08:30 14:00 Complete J.21.03.0030
26 Mar 21 Marshmans Rd - Sefton Transformer Upgrade 12:30 16:00 Complete J.21.03.0055
26 Mar 21 Inland Rd - Inland Rd Pole Replacement 09:00 14:00 Cancelled J.21.03.0031
26 Mar 21 Bay Paddock Rd - Kaikoura Pole Replacement 08:30 14:00 Cancelled J.21.03.0029
26 Mar 21 Station Rd - Kaikoura Pole Replacement 08:30 14:00 Complete J.21.03.0028
25 Mar 21 Williams St Kaiapoi Switchgear Maintenance 23:00 04:00 Complete J.21.03.0007
25 Mar 21 Williams St Kapapoi Switchgear Maintenance 23:00 04:00 Complete J.21.03.0007
25 Mar 21 Coldstream Road - Rangiora Line Recovery 09:00 12:00 Complete J.21.03.0006
25 Mar 21 Dairy Farm Road - Kaikoura Earthing Upgrade 09:00 16:30 Complete J.21.03.0016
25 Mar 21 Oaro - Kaikoura Pole Replacement 08:30 17:00 Complete J.21.03.0026
25 Mar 21 Mount Fyffe Rd - Brunels Rd - Kaikoura Pole Replacement 08:30 16:30 Complete J.21.03.0025
25 Mar 21 Beach Rd - Kaikoura Pole Replacement 08:30 16:00 Complete J.21.03.0024
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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 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.

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.

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.).

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.

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.


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.