MainPower NZ Ltd

Please note, at COVID-19 Alert Level 2, 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 31 October

Date Location Reason Power off Power on Status Ref Comments
31 Oct 20 Dale St Customer Supply Maintenance 08:00 16:00 Confirmed J.20.10.0219
Date Location Reason Power off Power on Status Ref Comments
02 Nov 20 20 Princes St - Waikari Pole Replacement 09:00 16:00 Confirmed J.20.10.0203
02 Nov 20 Stokes Rd - Balcairn Tree Cutting 08:30 13:00 Confirmed J.20.10.0200
02 Nov 20 Smarts Rd - Ashley Forest Cable Upgrade 09:00 16:00 Confirmed J.20.10.0201
02 Nov 20 Motunau Beach Pole Replacement 09:00 17:00 Confirmed J.20.10.0202
02 Nov 20 Bruces Rd - Balcairn Tree Cutting 13:00 17:00 Confirmed J.20.10.0208
02 Nov 20 Megowans Rd - Waikari Pole Replacement 10:00 16:00 Confirmed J.20.10.0207
03 Nov 20 Princes St - Waikari Pole Replacement 16:00 18:00 Pending J.20.10.0221
03 Nov 20 Mound Road - Amberley Tree Cutting 08:30 12:30 Confirmed J.20.10.0325
03 Nov 20 Weka Pass Pole Replacement 09:00 16:00 Pending J.20.10.0223
03 Nov 20 Hassalls Rd - Hawarden Waikari Rd - Hawarden Pole Replacement 08:00 17:00 Pending J.20.10.0209
04 Nov 20 Cross St - Sefton Transformer Relocation 09:00 16:00 Pending J.20.10.0261
04 Nov 20 Amberley Beach Rd - Amberley Beach Pole Replacement 09:00 16:00 Pending J.20.10.0262
04 Nov 20 Williams St Kaiapoi Cable Alterations 08:30 16:30 Pending J.20.10.0232
04 Nov 20 Riverview Road - Hurunui Mouth Pole Replacement 09:00 12:00 Pending J.20.10.0307
04 Nov 20 Kainga Rd - Kainga Tree Cutting 08:30 17:00 Pending J.20.10.0255
04 Nov 20 Red Swamp Rd - Kaikoura Transformer Upgrade 09:00 13:00 Pending J.20.10.0233
04 Nov 20 Blythe Road - Blythe Valley Pole Replacement 12:00 16:00 Pending J.20.10.0309
04 Nov 20 Amberley Beach Rd - Amberley Beach Pole Repairs 09:00 12:00 Pending J.20.10.0263
04 Nov 20 Kainga Rd - Kainga Tree Cutting 08:30 09:30 Pending J.20.10.0255
04 Nov 20 Aschens Road - Ohoka Pole Replacement 09:00 16:00 Pending J.20.10.0305
04 Nov 20 Kainga Rd - Kainga Tree Cutting 16:00 17:00 Pending J.20.10.0258
04 Nov 20 Amberley Beach Rd - Amberley Beach Pole Replacement 09:00 16:00 Pending J.20.10.0262
05 Nov 20 Domett Road - Cheviot Pole Replacement 09:00 16:00 Pending J.20.10.0312
05 Nov 20 Main North Road - Woodend Pole Replacement 22:00 05:00 Pending J.20.10.0340
05 Nov 20 Lewis Pass Road - Lewis Pass Tree Cutting 08:00 17:00 Pending J.20.10.0310
06 Nov 20 Canterbury St - Ashley Cable Termination 09:00 16:00 Pending J.20.10.0344
09 Nov 20 Good St - Rangiora Switchgear Replacement 09:00 16:00 Pending J.20.10.0358
09 Nov 20 Woodside Road - Oxford Switchgear Maintenance 09:00 16:00 Pending J.20.10.0357
09 Nov 20 Browns Road - Okuku Pole Replacement 09:00 16:00 Pending J.20.10.0346
09 Nov 20 Top Pahau Ford Rd - Amuri Plains Tree Cutting 09:30 11:30 Pending J.20.10.0362
09 Nov 20 Oxford Road - Cust Cable Livening 09:00 16:00 Pending J.20.10.0341
09 Nov 20 Top Pahau Ford Road - Amuri Plain Tree Cutting 12:00 13:00 Pending J.20.10.0361
09 Nov 20 Reeces Road - Omihi Pole Replacement 09:30 16:00 Pending J.20.10.0347
10 Nov 20 River Road - Leslie Hills Line Upgrade 09:00 16:30 Pending J.20.10.0370
10 Nov 20 Green Road - Rotherham Pole And Tranformer Site New Installation 09:00 16:00 Pending J.20.10.0365
10 Nov 20 Lees Valley Rd - Lees Valley Pole Replacement 13:00 16:00 Pending J.20.10.0373
10 Nov 20 View Hill - Oxford Pole Repairs 13:00 16:30 Pending J.20.10.0372
10 Nov 20 Snowdale Road - Lees Valley Pole Replacement 09:00 13:00 Pending J.20.10.0366
11 Nov 20 Cathedral Rd Cheviot Pole Replacement 09:00 16:00 Pending J.20.10.0412
11 Nov 20 River Road -leslie Hills Line Upgrade 09:00 16:30 Pending J.20.10.0371
11 Nov 20 Lehmans Rd Fernside Pole Repairs 13:00 16:00 Pending J.20.10.0413
12 Nov 20 Glenkins Rd Cheviot Pole Repairs 09:00 16:00 Pending J.20.10.0416
12 Nov 20 Leithfield Beach Pole Replacement 09:00 16:00 Pending J.20.10.0418
12 Nov 20 Pesters Rd Eyrewell Cable Livening 09:00 16:00 Pending J.20.10.0415
16 Nov 20 Pesters Rd Eyreton Cable Livening 09:00 16:00 Pending J.20.10.0425
16 Nov 20 Island Rd Kaiapoi Cable Livening 09:00 16:00 Pending J.20.10.0430
16 Nov 20 Rahme Crs Kaiapoi Cable Livening 09:00 16:00 Pending J.20.10.0429
16 Nov 20 Leamington Rd Cheviot Pole Replacement 09:00 12:00 Pending J.20.10.0428
16 Nov 20 Leamington Rd Cheviot Pole Replacement 09:00 17:00 Pending J.20.10.0427
16 Nov 20 Poyntz Rd Oxford Transformer Upgrade 09:00 12:00 Pending J.20.10.0426
Show all
Date Location Reason Power off Power on Status Ref Comments
30 Oct 20 Wallers Rd Transformer Maintenance 13:00 15:00 Cancelled J.20.10.0259
30 Oct 20 Bennetts Area Switchgear Maintenance 14:00 16:00 Cancelled J.20.10.0199
30 Oct 20 Mt Thomas Rd Pole And Tranformer Site New Installation 09:00 16:00 Pending J.20.10.0191
30 Oct 20 Tram Rd Network Maintenance 09:00 16:00 Complete J.20.10.0197
30 Oct 20 High St, Rangoira Switchgear Maintenance 00:01 05:00 Complete J.20.10.0188
29 Oct 20 Lochiel Pole Replacement 09:00 17:00 Cancelled J.20.10.0171
29 Oct 20 South Eyre Rd Cable Livening 13:30 15:30 Confirmed J.20.10.0187
29 Oct 20 Esplanade, Kaikoura Cable Livening 10:00 15:30 Complete J.20.10.0210
29 Oct 20 Main Race Rd Transformer Upgrade 09:00 13:00 Complete J.20.10.0113
29 Oct 20 Tram Rd Network Maintenance 09:00 16:00 Cancelled J.20.10.0184
29 Oct 20 Blunts Rd Tree Cutting 08:30 16:00 Confirmed J.20.10.0168
29 Oct 20 Sh1, Lewis Pass Connection / disc of generation 17:00 17:30 Cancelled J.20.10.0174
28 Oct 20 Tram Rd Network Maintenance 08:30 12:00 Complete J.20.10.0034
28 Oct 20 Moderates Rd Network Maintenance 08:30 12:00 Complete J.20.10.0034
28 Oct 20 Tram Rd Network Maintenance 08:30 16:30 Complete J.20.10.0034
28 Oct 20 Reeces Rd Pole Replacement 08:30 17:30 Complete J.20.10.0109
28 Oct 20 Postmans Rd / Chapmans Rd Tree Cutting 10:00 14:00 Complete J.20.10.0165
28 Oct 20 Gefkins Rd Transformer Upgrade 12:30 16:00 Complete J.20.10.0111
28 Oct 20 Waiau West Rd / Spotswood Pole Replacement 08:30 16:30 Complete J.20.10.0164
27 Oct 20 Cat Hill Rd Pole Replacement 09:00 16:30 Complete J.20.10.0091
23 Oct 20 Pooles Rd Pole Replacement 08:30 16:00 Complete J.20.10.0094
23 Oct 20 Tram Rd Transformer Upgrade 09:00 16:00 Complete J.20.10.0032
22 Oct 20 Seddon St, Cheviot Cable Livening 20:00 02:00 Complete J.20.10.0099
22 Oct 20 Stoonyhurst Rd Pole Replacement 09:30 16:30 Complete J.20.10.0021
22 Oct 20 Scarborough St Pole Replacement 08:30 16:00 Complete J.20.10.0020
22 Oct 20 Woodside Rd Pole Replacement 10:00 16:30 Complete J.20.10.0030
21 Oct 20 Tekoa Rd Pole Replacement 09:30 16:00 Complete J.20.09.0262
21 Oct 20 Esplanade Pole Replacement 08:30 16:00 Complete J.20.09.0260
21 Oct 20 Two Chain Rd Pole Replacement 09:00 16:00 Complete J.20.09.0261
20 Oct 20 Southbrook Preperation Work 10:30 15:00 Complete J.20.10.0179 Deferred from 19 Oct 20
20 Oct 20 Esplanade Network Maintenance 09:30 17:00 Complete J.20.09.0258
19 Oct 20 Balmoral Station Rd Pole Replacement 09:30 16:30 Cancelled J.20.09.0227
19 Oct 20 Southbrook Preperation Work 10:30 15:00 Complete J.20.10.0179 Deferred To 20 Oct 20
19 Oct 20 Rippengale Rd Switchgear Maintenance 10:00 15:00 Complete J.20.09.0239
16 Oct 20 Downs Rd Pole Replacement 09:00 16:00 Complete J.20.09.0213
16 Oct 20 Ivory St Cable Alterations 09:00 17:00 Complete J.20.10.0039
15 Oct 20 Hills St Switchgear Maintenance 13:00 16:00 Confirmed J.20.09.0179
15 Oct 20 Wolffs Rd Cable New Installation 09:30 15:00 Complete J.20.09.0220
15 Oct 20 Mina Rd Network Maintenance 16:30 17:00 Complete J.20.09.0218
15 Oct 20 Bennetts Rd Pole And Tranformer Site New Installation 09:00 16:00 Complete J.20.09.0219
14 Oct 20 Judsons Rd Cable Livening 09:00 16:00 Complete J.20.09.0257
14 Oct 20 Downs Rd Pole Replacement 09:00 16:00 Complete J.20.09.0208
13 Oct 20 Downs Rd Pole Replacement 09:00 16:00 Complete J.20.09.0207
13 Oct 20 Henrys Ford Rd Customer Supply new Installation 08:30 12:00 Complete J.20.09.0159
12 Oct 20 Rangiora-woodend Road, Woodend Cable Alterations 09:00 16:00 Completed 81919 Deferred from 09/10/2020
12 Oct 20 Downs Rd Pole Replacement 09:00 16:00 Complete J.20.09.0206
09 Oct 20 Willams Street, Kaiapoi Cable Alterations 09:00 16:00 Completed 81928
09 Oct 20 Rangiora-woodend Road, Woodend Cable Alterations 09:00 16:00 Completed 81919 Deferred to 12/10/2020
09 Oct 20 Hundalee Road, Kaikoura Pole Replacement 09:00 16:00 Cancelled 81911
08 Oct 20 State Highway 1, Parnassus Network Maintenance 16:00 16:30 Completed 81908
08 Oct 20 Morris Road, Amberley Cable Livening 09:00 16:00 Completed 81915
08 Oct 20 Kainga Road, Kainga Pole & Transformer Site New Installation 09:00 16:00 Completed 81918
07 Oct 20 School Road, Culverden Kiosk Upgrade 09:00 17:00 Completed 81909
06 Oct 20 Leader Road East, Parnassus Tree Cutting 09:00 16:30 Cancelled 81877
06 Oct 20 Dawson Douglas Place, Kaiapoi Service Box Replacement 09:00 16:00 Completed 81903
06 Oct 20 Wesley Street, Kaiapoi Service Box Replacement 09:00 16:00 Completed 81894
05 Oct 20 Seddon Street, Rangiora Cable Test 09:00 16:00 Completed 81888
05 Oct 20 Scargill Valley Road, Scargill Pole Replacement 09:00 16:00 Completed 81876
02 Oct 20 Reeces Road, Omihi Pole Replacement 09:30 14:00 Completed 81875
02 Oct 20 Ngaroma Road, Parnassus Pole Replacement 09:00 16:00 Completed 81902
01 Oct 20 Whakatipu Street, Pegasus Switchgear Maintenance 09:00 12:00 Completed 81882
01 Oct 20 Ohoka Road, Kaiapoi Service Box Replacement 09:00 16:00 Completed 81866
01 Oct 20 Reeces Road, Omihi Pole Replacement 09:30 12:00 Completed 81874
01 Oct 20 Leader Road, Parnassus Pole Repairs 09:00 16:30 Completed 81898
01 Oct 20 Pembertons Road, Sefton Transformer Site New Installation 09:00 16:00 Completed 81901
Show all

Outages FAQS

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 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. If you are on a controlled rate this will show on your electricity bill, you will usually receive a cheaper electricity rate if you are on a controlled tariff.


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.).

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.