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 Thursday 29 July

Date Location Reason Power off Power on Status Ref Comments
29 Jul 21 Papawai Dr - Rangiora Switchgear Maintenance 09:00 14:00 Confirmed J.21.06.0352
29 Jul 21 Amberley Beach Rd Pole Replacement 08:30 16:00 Confirmed J.21.07.0054
29 Jul 21 Riverview Rd Domett Pole And Tranformer Site New Installation 09:00 16:00 Confirmed J.21.07.0168
29 Jul 21 Flintoft Mouse Point Rd Tree Cutting 09:00 14:00 Confirmed J.21.07.0167
Date Location Reason Power off Power on Status Ref Comments
30 Jul 21 Reserve Rd - Amberley Network Alterations 09:00 16:30 Confirmed J.21.07.0014
02 Aug 21 Copples Rd Sefton Pole And Tranformer Site New Installation 08:30 15:30 Confirmed J.21.07.0036
02 Aug 21 Barkers Rd Loburn Pole Replacement 09:00 16:00 Confirmed J.21.07.0173
03 Aug 21 Cridland St Kaiapoi Switchgear Maintenance 10:00 14:00 Confirmed J.21.07.0056
03 Aug 21 Homeview Road - Cheviot Line Repairs 09:00 16:00 Confirmed J.21.07.0160
03 Aug 21 Beach Rd Kaikoura Network Alterations 09:00 15:00 Confirmed J.21.07.0151
03 Aug 21 Kings Rd Waipara Pole Maintenance 09:00 13:00 Confirmed J.21.07.0044
04 Aug 21 Fernside Rd Rangiora Network Alterations 08:00 12:00 Confirmed J.21.07.0111
04 Aug 21 Sister Rd Parnassus Transformer Site new Installation 10:00 15:00 Confirmed J.21.07.0152
04 Aug 21 Onepunga Rd Line Maintenance 08:30 16:00 Confirmed J.21.07.0049
05 Aug 21 Deer Park Rd Cheviot Pole Replacement 09:00 16:00 Confirmed J.21.07.0124
05 Aug 21 Main Race Rd Eyrewell Cable New Installation 08:30 15:30 Confirmed J.21.07.0153
05 Aug 21 Bridge St Fernside Customer Supply new Installation 09:00 16:00 Confirmed J.21.07.0122
05 Aug 21 Chalet Crescent Hanmer Springs Switchgear Replacement 08:30 16:00 Confirmed J.21.07.0121
06 Aug 21 Douglas Rd Amberley Switchgear Maintenance 13:00 15:00 Confirmed J.21.07.0230
06 Aug 21 Georges Rd Broomfield Switchgear Maintenance 09:00 11:00 Confirmed J.21.07.0229
06 Aug 21 Georges Rd Broomfield Switchgear Maintenance 11:00 13:00 Confirmed J.21.07.0232
06 Aug 21 Gladstone Rd Woodend Tree Cutting 08:30 12:00 Confirmed J.21.07.0219
06 Aug 21 Thongcaster Rd Customer Supply new Installation 09:00 16:30 Confirmed J.21.07.0154
09 Aug 21 Motunau Beach Rd Line Maintenance 12:30 16:00 Confirmed J.21.07.0209
09 Aug 21 Loburn Whiterock Rd Customer Supply new Installation 09:00 16:00 Confirmed J.21.07.0205
09 Aug 21 Pattersons Rd Line Maintenance 09:00 12:00 Confirmed J.21.07.0208
10 Aug 21 Harrs Road - Eyreton Network Maintenance 08:30 16:00 Confirmed J.21.07.0285
10 Aug 21 Harrs Road - Eyreton Network Maintenance 08:30 16:00 Confirmed J.21.07.0284
10 Aug 21 West Belt Rangiora Customer Supply new Installation 09:00 16:00 Confirmed J.21.07.0181
10 Aug 21 Scarborough Terrace Hanmer Pole Replacement 09:00 16:30 Confirmed J.21.07.0235
10 Aug 21 King St Rangiora Switchgear Maintenance 13:00 16:30 Confirmed J.21.07.0213
10 Aug 21 Harrs Road - Eyreton Network Maintenance 08:30 16:00 Confirmed J.21.07.0283
11 Aug 21 Woods Rd Clarkville Pole Replacement 08:30 12:30 Confirmed J.21.07.0247
11 Aug 21 Phoebe Rd Cheviot Network Maintenance 09:00 11:30 Confirmed J.21.07.0214
11 Aug 21 Ludstone Rd Kaikoura Line Maintenance 10:00 17:00 Confirmed J.21.07.0256
11 Aug 21 Medway Rd Hanmer Line Maintenance 11:00 16:00 Confirmed J.21.07.0252
11 Aug 21 Clothiers Rd Eyreton Line Maintenance 08:30 16:00 Confirmed J.21.07.0251
11 Aug 21 Robertson Rd Balcairn Pole Replacement 09:00 15:30 Confirmed J.21.07.0246
12 Aug 21 Leslie Hills Rd Culverden Line Maintenance 09:00 15:30 Confirmed J.21.07.0220
12 Aug 21 Fergusons Rd Waikari Pole Replacement 09:00 16:30 Confirmed J.21.07.0236
12 Aug 21 Seddon St Rangiora Switchgear Maintenance 09:00 13:00 Confirmed J.21.07.0257
12 Aug 21 Mt Arden Rd Hawarden Line Maintenance 09:00 16:30 Confirmed J.21.07.0253
13 Aug 21 Medbury Rd Hurunui Pole Replacement 09:00 16:30 Confirmed J.21.07.0238
13 Aug 21 Stringers Rd Broomfield Line Maintenance 08:30 16:00 Confirmed J.21.07.0239
13 Aug 21 Pesters Road - West Eyreton Customer Supply new Installation 08:30 16:00 Confirmed J.21.07.0292
13 Aug 21 North Eyre Road - Swannanoa Switchgear Maintenance 09:00 16:00 Confirmed J.21.07.0288
16 Aug 21 Marsh Rd Southbrook Pole Replacement 08:00 16:00 Confirmed J.21.07.0254
17 Aug 21 Peraki St - Kaiapoi Switchgear Replacement 08:30 09:30 Confirmed J.21.07.0293
23 Aug 21 River Rd - Hanmer Springs Line Maintenance 09:30 11:00 Confirmed J.21.07.0314
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Date Location Reason Power off Power on Status Ref Comments
28 Jul 21 Fernside Rd Fernside Line Alterations 08:00 17:30 Complete J.21.07.0006
28 Jul 21 Gartys Rd Balcairn Pole Replacement 09:00 16:00 Complete J.21.07.0096
28 Jul 21 Grays Road - Amberley Customer Supply Maintenance 08:00 12:00 Complete J.21.07.0011
27 Jul 21 Inland Rd Waiau Pole Replacement 09:00 16:00 Complete J.21.07.0092
26 Jul 21 Broad Road - Sefton Pole Replacement 08:30 15:30 Complete J.21.06.0303
26 Jul 21 Gray Crescent - Kaiapoi Switchgear Replacement 08:30 16:30 Cancelled J.21.06.0362
25 Jul 21 Wrights Rd - Kaiapoi Switchgear Maintenance 08:00 13:00 Complete J.21.06.0302
23 Jul 21 Downs Rd - Eyrewell Pole Replacement 08:30 16:00 Complete J.21.06.0272
22 Jul 21 Rosewood Drive - Amberley Cable Livening 09:00 16:00 Complete J.21.06.0270
22 Jul 21 Rosewood Drive - Amberley Cable Livening 09:00 16:00 Complete J.21.06.0270
22 Jul 21 Threlkelds Rd - Ohoka Pole Replacement 08:30 16:00 Complete J.21.06.0264
22 Jul 21 Schoolhouse Road - Kaikoura Pole Repairs 08:30 13:00 Complete J.21.06.0306
22 Jul 21 Mill Road - Kaikoura Pole Repairs 09:00 13:00 Complete J.21.06.0307
22 Jul 21 Harris Rd - Rangiora Pole Replacement 08:30 15:30 Complete J.21.06.0285 Deferred from 21 Jul 21
22 Jul 21 Rosewood Drive - Amberley Cable Livening 09:00 16:00 Complete J.21.06.0270
22 Jul 21 Rosewood Drive - Amberley Cable Livening 09:00 16:00 Complete J.21.06.0270
21 Jul 21 South Bay Parade - Kaikoura Pole Replacement 09:30 15:00 Complete J.21.06.0354
21 Jul 21 Harris Rd - Rangiora Pole Replacement 08:30 15:30 Complete J.21.06.0285 Deferred To 22 Jul 21
21 Jul 21 Coronation St - Rangiora Network Alterations 08:00 16:00 Complete J.21.06.0238
20 Jul 21 Loburn Network Reconfiguration 16:00 17:00 Complete J.21.06.0262
20 Jul 21 South Bay Parade - Kaikoura Pole Replacement 09:30 15:00 Complete J.21.06.0353
20 Jul 21 Foothills Rd - Okuku Connection / disc of generation 16:00 17:00 Cancelled J.21.06.0256
20 Jul 21 Wharfedale Road - Lees Valley Line Repairs 09:00 16:00 Complete J.21.07.0179
20 Jul 21 Hodgesons Rd - Loburn Pole Replacement 09:00 16:00 Complete J.21.06.0263
20 Jul 21 Loburn Pole Replacement 08:00 09:00 Complete J.21.06.0261
20 Jul 21 Barren Ave - Ashely Forest Overhead To Underground Conversion 09:30 16:00 Complete J.21.06.0251
20 Jul 21 Scarborough St - Kaikoura Pole Replacement 08:30 15:30 Complete J.21.06.0236
20 Jul 21 Barkers Rd - Loburn Line Upgrade 08:30 15:30 Cancelled J.21.06.0244
19 Jul 21 Barkers Rd - Loburn Line Upgrade 08:30 15:30 Cancelled J.21.06.0243
19 Jul 21 Wharfedale Road - Less Valley Pole Replacement 09:00 16:00 Complete J.21.07.0178
19 Jul 21 Dalley Lane - Oxford Customer Supply new Installation 08:30 15:30 Cancelled J.21.06.0342
19 Jul 21 Foothills Rd - OKUKU Connection / disc of generation 14:00 16:00 Complete J.21.06.0250
16 Jul 21 Cat Hill Rd - Greta Valley Pole Maintenance 09:00 15:00 Complete J.21.06.0276
16 Jul 21 Marsh Rd - Southbrook Pole Replacement 08:00 16:00 Cancelled J.21.06.0235
16 Jul 21 Barkers Rd - Loburn Line Upgrade 08:30 15:30 Cancelled J.21.06.0241
15 Jul 21 Factory Road - Sefton Network Alterations 09:00 16:00 Complete J.21.06.0232
15 Jul 21 Courages Rd - Amberley Switchgear Maintenance 09:30 14:30 Complete J.21.06.0233
15 Jul 21 Te Koa rd - Culverden Pole Maintenance 09:00 16:00 Complete J.21.06.0275
15 Jul 21 Barkers Rd - Loburn Line Upgrade 08:30 15:30 Complete J.21.06.0240
15 Jul 21 Giles Rd - Kaiapoi Pole Replacement 08:30 15:30 Complete J.21.06.0253
14 Jul 21 Rangiora Woodend Rd - Rangiora Line Upgrade 10:00 14:00 Complete J.21.06.0231
14 Jul 21 Jacksons Rd Ohoka Pole Replacement 08:30 15:30 Complete J.21.06.0214
13 Jul 21 Leslie St, Waiau Pole Replacement 09:00 16:00 Complete J.21.06.0211
13 Jul 21 Topito Road - Tuahiwi Network Alterations 08:30 16:00 Complete J.21.06.0230
13 Jul 21 Mt Lyford Pole Replacement 09:00 16:00 Complete J.21.06.0260
13 Jul 21 Hurunui Mouth Rd Pole Maintenance 09:00 16:00 Complete J.21.06.0279
13 Jul 21 Chisholm Crs Hanmer Springs Network Alterations 09:00 16:30 Complete J.21.06.0212
12 Jul 21 Matamata Quay - Pegasus Network Alterations 09:00 16:00 Complete J.21.06.0199
12 Jul 21 Fawcetts rd - Ashley Line Upgrade 08:30 15:30 Complete J.21.06.0234
12 Jul 21 Barkers Rd - Loburn Line Upgrade 08:30 15:30 Complete J.21.06.0239
11 Jul 21 Neeves Road - Kaiapoi Customer Supply Maintenance 08:00 12:00 Complete J.21.07.0005
11 Jul 21 Old Main Rd - Kaiapoi Switchgear Maintenance 08:00 12:00 Complete J.21.06.0194
09 Jul 21 Wharfedale Road - Lees Valley Line Repairs 09:00 16:00 Cancelled J.21.07.0004
08 Jul 21 Wharfedale Road - Lees Valley Pole Replacement 09:00 16:00 Cancelled J.21.07.0003
08 Jul 21 Kennedys Hill Rd, Cust Network Alterations 08:30 16:00 Complete J.21.06.0209
08 Jul 21 Akaroa St - Peraki St - Otaki St - Kaiapoi Network Maintenance 08:00 17:00 Complete J.21.06.0254
07 Jul 21 Southbrook Road - Rangiora Cable Alterations 08:30 15:00 Complete J.21.06.0192
07 Jul 21 Motunau Beach Rd, Motunau Line Reconduct 09:00 16:00 Complete J.21.06.0208
07 Jul 21 Southbrook Road - Rangiora Cable Alterations 08:30 15:00 Complete J.21.06.0192
06 Jul 21 Steffens Rd Oxford Network Alterations 09:00 16:00 Cancelled J.21.06.0145
06 Jul 21 Heathstock Rd - Hawarden Pole Maintenance 09:00 16:00 Complete J.21.06.0284
06 Jul 21 Hanmer Springs Rd, Hanmer Springs Pole Replacement 09:00 16:00 Complete J.21.06.0189
05 Jul 21 South Eyre Rd West Eyreton Network Alterations 09:00 16:00 Complete J.21.06.0129
05 Jul 21 Leader Rd Parnassus Pole Replacement 09:00 16:00 Complete J.21.06.0180
05 Jul 21 North Eyre Rd West Eyreton Switchgear Maintenance 13:00 15:00 Cancelled J.21.06.0140 Deferred from 02 Jul 21
05 Jul 21 Lucas Drive, Leithfield Beach Pole Maintenance 11:00 15:00 Complete J.21.06.0184
05 Jul 21 Steffens Rd Oxford Network Alterations 09:00 16:00 Complete J.21.06.0128
04 Jul 21 Main North Rd Line Alterations 08:00 12:00 Complete J.21.06.0157
02 Jul 21 Mill Rd Ohoka Pole Replacement 09:00 16:00 Complete J.21.06.0117
02 Jul 21 Pearson Lane Rangiora Cable Alterations 08:30 15:00 Complete J.21.06.0127
02 Jul 21 SH1 Pineacres Pole Replacement 09:00 16:00 Complete J.21.06.0115
02 Jul 21 Fernside Rd Rangiora Line Alterations 08:30 12:00 Cancelled J.21.06.0138
02 Jul 21 North Eyre Rd West Eyreton Switchgear Maintenance 13:00 15:00 Cancelled J.21.06.0140 Deferred To 05 Jul 21
02 Jul 21 Greens Rd Tuahiwi Pole Replacement 08:30 15:30 Complete J.21.06.0139
01 Jul 21 Cass St - Kaiapoi Switchgear Maintenance 22:30 02:30 Complete J.21.06.0038
01 Jul 21 Glenkens Rd - Cheviot Pole Replacement 09:00 16:00 Cancelled J.21.06.0051
01 Jul 21 Poyntzs Rd West Eyreton Line Alterations 09:00 16:00 Complete J.21.06.0105
30 Jun 21 Lewis Pass Rd Pole Replacement 09:00 16:30 Complete J.21.06.0100
30 Jun 21 Lewis Pass Rd Pole Replacement 16:00 16:30 Complete J.21.06.0100
30 Jun 21 Lewis Pass Rd Connection / disc of generation 08:30 09:00 Complete J.21.06.0099
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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 by contacting your electricity retail provider and letting them know. 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.