MainPower NZ Ltd


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 Sunday 20 June

No current outages

Date Location Reason Power off Power on Status Ref Comments
22 Jun 21 Carleton Rd Tree Cutting 10:00 15:00 Confirmed J.21.06.0158 Deferred from 15 Jun 21
22 Jun 21 Rosewood Dr - Amberley Cable Livening 09:00 16:00 Confirmed J.21.06.0029
22 Jun 21 Rosewood Dr - Amberley Cable Livening 09:00 16:00 Confirmed J.21.06.0029
22 Jun 21 Rands Rd - Fernside Transformer Upgrade 08:30 15:30 Confirmed J.21.05.0303
22 Jun 21 Rosewood Dr - Amberley Cable Livening 09:00 16:00 Confirmed J.21.06.0029
22 Jun 21 Rosewood Dr - Amberley Cable Livening 09:00 16:00 Confirmed J.21.06.0029
22 Jun 21 Libby Drive - Cullen Ave - Mandeville Switchgear Maintenance 08:30 13:00 Confirmed J.21.05.0273
22 Jun 21 Cones Rd - Rangiora Line Upgrade 08:30 15:30 Confirmed J.21.05.0302
22 Jun 21 Motunau Beach Rd Tree Cutting 09:00 13:00 Confirmed J.21.06.0116
24 Jun 21 Flaxton Rd Fernside Line Alterations 08:00 17:00 Cancelled J.21.06.0036
24 Jun 21 Silverstream - Kaiapoi Switchgear Maintenance 09:00 13:00 Confirmed J.21.05.0306
25 Jun 21 Scargill Valley Rd - Scargill Pole Replacement 09:00 16:00 Confirmed J.21.06.0047
25 Jun 21 Depot Rd Oxford Network Upgrade 09:00 11:00 Confirmed J.21.06.0098
28 Jun 21 Townsend Fields - Rangiora Network Alterations 08:30 15:30 Confirmed J.21.06.0031
28 Jun 21 Townsend Fields - Rangiora Network Alterations 08:30 15:30 Confirmed J.21.06.0031
28 Jun 21 Allandale Rd - Hawarden Pole Replacement 09:00 16:00 Confirmed J.21.06.0065
29 Jun 21 Allandale Rd - Hawarden Pole Replacement 09:00 16:00 Confirmed J.21.06.0066
30 Jun 21 Lewis Pass Rd Pole Replacement 16:00 16:30 Confirmed J.21.06.0100
30 Jun 21 Lewis Pass Rd Pole Replacement 09:00 16:30 Confirmed J.21.06.0100
30 Jun 21 Lewis Pass Rd Connection / disc of generation 08:30 09:00 Confirmed J.21.06.0099
01 Jul 21 Cass St - Kaiapoi Switchgear Maintenance 22:30 02:30 Confirmed J.21.06.0038
01 Jul 21 Glenkens Rd - Cheviot Pole Replacement 09:00 16:00 Confirmed J.21.06.0051
01 Jul 21 Poyntzs Rd West Eyreton Line Alterations 09:00 16:00 Confirmed J.21.06.0105
02 Jul 21 Greens Rd Tuahiwi Pole Replacement 08:30 15:30 Confirmed J.21.06.0139
02 Jul 21 SH1 Pineacres Pole Replacement 09:00 16:00 Confirmed J.21.06.0115
02 Jul 21 North Eyre Rd West Eyreton Switchgear Maintenance 13:00 15:00 Confirmed J.21.06.0140
02 Jul 21 Mill Rd Ohoka Pole Replacement 09:00 16:00 Confirmed J.21.06.0117
02 Jul 21 Fernside Rd Rangiora Line Alterations 08:30 12:00 Cancelled J.21.06.0138
02 Jul 21 Pearson Lane Rangiora Cable Alterations 08:30 15:00 Confirmed J.21.06.0127
04 Jul 21 Main North Rd Line Alterations 08:00 12:00 Confirmed J.21.06.0157
05 Jul 21 Leader Rd Parnassus Pole Replacement 09:00 16:00 Confirmed J.21.06.0180
05 Jul 21 Steffens Rd Oxford Network Alterations 09:00 16:00 Confirmed J.21.06.0128
05 Jul 21 Lucas Drive, Leithfield Beach Pole Maintenance 11:00 15:00 Confirmed J.21.06.0184
05 Jul 21 South Eyre Rd West Eyreton Network Alterations 09:00 16:00 Confirmed J.21.06.0129
06 Jul 21 Steffens Rd Oxford Network Alterations 09:00 16:00 Confirmed J.21.06.0145
06 Jul 21 Hanmer Springs Rd, Hanmer Springs Pole Replacement 09:00 16:00 Confirmed J.21.06.0189
07 Jul 21 Southbrook Road - Rangiora Cable Alterations 08:30 15:00 Confirmed J.21.06.0192
07 Jul 21 Southbrook Road - Rangiora Cable Alterations 08:30 15:00 Confirmed J.21.06.0192
07 Jul 21 Motunau Beach Rd, Motunau Line Reconduct 09:00 16:00 Confirmed J.21.06.0208
08 Jul 21 Kennedys Hill Rd, Cust Network Alterations 08:30 16:00 Confirmed J.21.06.0209
11 Jul 21 Old Main Rd - Kaiapoi Switchgear Maintenance 08:00 12:00 Confirmed J.21.06.0194
12 Jul 21 Matamata Quay - Pegasus Network Alterations 09:00 16:00 Confirmed J.21.06.0199
13 Jul 21 Leslie St, Waiau Pole Replacement 09:00 16:00 Confirmed J.21.06.0211
13 Jul 21 Chisholm Crs Hanmer Springs Network Alterations 09:00 16:30 Confirmed J.21.06.0212
14 Jul 21 Jacksons Rd Ohoka Pole Replacement 08:30 15:30 Confirmed J.21.06.0214
Show all
Date Location Reason Power off Power on Status Ref Comments
18 Jun 21 Whites Rd - Ohoka Pole Replacement 09:00 16:00 Complete J.21.05.0288 Deferred from 17 Jun 21
18 Jun 21 Cramptons Bush Rd - Amberley Transformer Upgrade 09:00 15:00 Complete J.21.05.0301
18 Jun 21 Rakahuri Rd Glentui Line Repairs 09:00 16:00 Complete J.21.06.0144
17 Jun 21 Rakahuri Rd Glentui Line Repairs 09:00 16:00 Complete J.21.06.0132
17 Jun 21 Adderley Rd - Kaiapoi Pole Replacement 09:00 16:00 Complete J.21.05.0286
17 Jun 21 High St - Church St - Rangiora Network Alterations 09:00 16:00 Complete J.21.05.0285 Deferred from 16 Jun 21
17 Jun 21 Whites Rd - Ohoka Pole Replacement 09:00 16:00 Complete J.21.05.0288 Deferred To 18 Jun 21
17 Jun 21 Whites Rd - Ohoka Pole Replacement 09:00 16:00 Complete J.21.05.0289
16 Jun 21 Munro Rd Cheviot Pole Replacement 09:00 16:00 Complete J.21.05.0264
16 Jun 21 Stringers Rd Amberley Tree Cutting 08:30 16:00 Complete J.21.05.0198
16 Jun 21 High St - Church St - Rangiora Network Alterations 09:00 16:00 Complete J.21.05.0285 Deferred To 17 Jun 21
15 Jun 21 Carleton Rd Tree Cutting 10:00 15:00 Confirmed J.21.06.0158 Deferred To 22 Jun 21
15 Jun 21 Leithfield Road Line Recovery 09:00 16:00 Complete J.21.05.0035 Deferred from 14 Jun 21
15 Jun 21 Silverstream - Kaiapoi Cable Termination 09:00 12:00 Complete J.21.05.0287
15 Jun 21 Kaiwara Homestead Rd Culverden Tree Cutting 09:00 16:00 Complete J.21.05.0166 Deferred from 14 Jun 21
15 Jun 21 Northbrook Rd Rangiora Pole Replacement 08:30 15:30 Complete J.21.05.0263
14 Jun 21 Mt Alexander Rd Waikari Pole Replacement 09:00 16:00 Complete J.21.05.0262
14 Jun 21 Mouse Point Substation Network Maintenance 09:00 17:00 Complete J.21.05.0265
14 Jun 21 Island Rd Kaiapoi Pole Replacement 08:30 15:30 Complete J.21.05.0261
14 Jun 21 Fernside Rd Rangiora Line Alterations 08:00 15:00 Complete J.21.06.0035
14 Jun 21 Kaiwara Homestead Rd Culverden Tree Cutting 09:00 16:00 Complete J.21.05.0166 Deferred To 15 Jun 21
14 Jun 21 Mouse Point Substation Network Maintenance 09:00 17:00 Complete J.21.05.0265
14 Jun 21 Chisholm Crs Hanmer Springs Cable Livening 09:00 16:00 Cancelled J.21.05.0242
14 Jun 21 Leithfield Road Line Recovery 09:00 16:00 Complete J.21.05.0035 Deferred To 15 Jun 21
11 Jun 21 MacKenzies Rd Waipara Pole Replacement 09:00 16:00 Complete J.21.05.0209
11 Jun 21 Waiau Township Pole Replacement 09:00 16:00 Complete J.21.05.0210
10 Jun 21 Ferry Rd Kaiapoi Transformer Upgrade 08:30 13:00 Complete J.21.05.0163
10 Jun 21 Grange Rd Kaikoura Network Alterations 09:30 15:30 Complete J.21.06.0059
10 Jun 21 Island Rd Kaiapoi Pole Replacement 08:30 15:30 Complete J.21.05.0206
10 Jun 21 Thongcaster Rd Oxford Transformer Upgrade 09:00 16:00 Complete J.21.05.0113
10 Jun 21 Browns Rock Rd Oxford Pole Replacement 09:00 16:00 Complete J.21.05.0207
09 Jun 21 Pa Rd - Kaiapoi Pole Replacement 08:30 15:30 Complete J.21.05.0190
09 Jun 21 Karaka Rd Waikari Pole Replacement 09:00 16:00 Complete J.21.05.0205
08 Jun 21 Gilberts Rd Hawarden Pole Replacement 09:00 16:00 Complete J.21.05.0157
08 Jun 21 State Highway 1 Hapuku Transformer Upgrade 09:00 11:30 Cancelled J.21.05.0104
08 Jun 21 SH1 Woodend Transformer Alterations 09:00 16:00 Complete J.21.05.0164 Deferred from 04 Jun 21
08 Jun 21 Scarborough Tce Hanmer Springs Pole Replacement 09:30 16:00 Complete J.21.05.0241
08 Jun 21 State Highway 1 Hapuku Network Upgrade 11:30 12:00 Complete J.21.05.0106
04 Jun 21 Bradleys Rd Ohoka Transformer Upgrade 08:30 13:00 Complete J.21.05.0204
04 Jun 21 SH1 Woodend Transformer Alterations 09:00 16:00 Complete J.21.05.0164 Deferred To 08 Jun 21
04 Jun 21 North Eyre Rd Swannanoa Network Alterations 09:00 16:00 Complete J.21.05.0230
04 Jun 21 Scargill Valley Rd Scargill Pole Replacement 09:00 16:00 Cancelled J.21.05.0156
03 Jun 21 Lewis Pass Rd Lewis Pass Pole Replacement 09:00 16:00 Complete J.21.05.0155
03 Jun 21 Williams St - Kaiapoi Network Maintenance 23:00 01:00 Complete J.21.05.0063
03 Jun 21 Burnt Hill Rd Oxford Transformer Site new Installation 09:00 16:00 Complete J.21.05.0143
03 Jun 21 Peraki St - Kaiapoi Network Maintenance 23:00 01:00 Complete J.21.05.0063
02 Jun 21 German Rd Oxford Pole And Tranformer Site New Installation 09:30 15:30 Complete J.21.05.0154
02 Jun 21 Marshmans Rd Ashley Cable Livening 08:30 12:00 Complete J.21.05.0266
02 Jun 21 Inland Rd Waiau Pole Maintenance 09:00 13:00 Complete J.21.05.0139
02 Jun 21 Bath St Hanmer Springs Pole Replacement 10:00 16:00 Complete J.21.05.0140
01 Jun 21 Isaac Rd - West Eyreton Tree Cutting 08:30 16:00 Complete J.21.05.0061 Deferred from 31 May 21
01 Jun 21 Motunau Beach Rd, Motunau Tree Cutting 09:00 13:00 Cancelled J.21.05.0272
01 Jun 21 Lewis Pass Rd Pole Replacement 09:00 16:00 Cancelled J.21.05.0128
31 May 21 Woodstock Road - Oxford Pole Replacement 09:00 15:30 Cancelled J.21.05.0088 Deferred from 31 May 21
31 May 21 Isaac Rd - West Eyreton Tree Cutting 08:30 16:00 Complete J.21.05.0061 Deferred To 01 Jun 21
31 May 21 Woodstock Road - Oxford Pole Replacement 09:00 15:30 Cancelled J.21.05.0088 Deferred To 31 May 21
28 May 21 Blackett St Rangiora Cable Livening 09:00 11:00 Complete J.21.05.0125
28 May 21 Rossiters Rd - Loburn Pole Replacement 08:30 15:30 Complete J.21.05.0064
28 May 21 Perhams Road - View Hill Pole Replacement 08:30 15:30 Complete J.21.05.0051 Deferred To 28 May 21
28 May 21 South Eyre Road - Clarkville Pole Replacement 08:30 15:30 Complete J.21.05.0068
28 May 21 Perhams Road - View Hill Pole Replacement 08:30 15:30 Complete J.21.05.0051 Deferred from 28 May 21
28 May 21 Greens Rd - Tuahiwi Pole Replacement 08:30 15:30 Cancelled J.21.05.0036
27 May 21 Scarbprough Terrace - Hanmer Pole Replacement 09:30 15:30 Cancelled J.21.05.0042
27 May 21 Tripoli St - Rangiora Switchgear Maintenance 09:00 13:00 Complete J.21.04.0326
26 May 21 Domett Rd - Domett Pole Replacement 09:00 16:00 Complete J.21.05.0054
26 May 21 Domett Road - Domett Pole Replacement 09:00 16:00 Complete J.21.05.0052
26 May 21 Ethelton Road - Greta Valley Pole Replacement 09:30 15:00 Complete J.21.05.0050
26 May 21 Domett Rd - Domett Pole Replacement 09:00 16:00 Complete J.21.05.0054
25 May 21 Lineside Road Pole Replacement 08:30 15:30 Complete J.21.05.0031
25 May 21 Raven Quay - Kaiapoi Pole Replacement 09:00 16:00 Complete J.21.05.0049
25 May 21 Reeces Road - Omihi Pole Replacement 09:00 16:00 Cancelled J.21.05.0032
25 May 21 Waiau Township - Waiau Pole Replacement 09:00 16:00 Complete J.21.05.0033
24 May 21 West Belt - Rangiora Switchgear Replacement 09:00 17:00 Complete J.21.04.0317
24 May 21 Jeffs Drain Rd - Ohoka Pole Replacement 08:30 15:30 Complete J.21.04.0329
24 May 21 William Coup Rd - Kaiapoi Pole Replacement 09:00 16:00 Complete J.21.04.0330
23 May 21 Flaxton Rd - Rangiora Transformer Upgrade 08:00 16:00 Complete J.21.04.0315
21 May 21 Ludstone Rd - Kaikoura Pole Replacement 08:30 14:30 Complete J.21.04.0313
21 May 21 Postmans Rd - Kaikoura Pole Replacement 08:30 14:30 Complete J.21.04.0312
21 May 21 Avoca St - Kaikoura Pole Replacement 08:00 14:00 Complete J.21.04.0310
21 May 21 South Bay Parade Pole Replacement 08:00 14:00 Complete J.21.05.0067
21 May 21 Anderson St Amberley Cable Alterations 09:00 16:00 Complete J.21.04.0314
Show all

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.