New residential and non-residential connections

Important information for building and electrical contractors

1. Application for Temporary Supply and New Connection

1.1 All applications for supply are to be made on the Network Connection Application online form on this page. Alternatively you can contact MainPower directly.

1.2 In normal circumstances, a new installation will not be connected to the supply until such time as MainPower has received notification from the Electrical Contractor.

2. Electrical Contractor’s Responsibility

2.1 It is the Electrical Contractor’s responsibility to ensure that proper provision is made for underground supply. On the MainPower network only MainPower approved contractors are permitted to access service boxes, link boxes or kiosks.

2.2 Where the Electrical Contractor has installed the service main to the power pole, they must contact MainPower to advise that the service cable is required to be raised and terminated. This is chargeable to the Electrical Contractor or customer. Only MainPower approved contractors are permitted to climb poles or access pole fuses.

3. Water Heating

3.1 MainPower will control all domestic water heater cylinders 180 litres and above.

3.2 Booster elements in solar water heaters are to be controlled by MainPower.

3.3 Booster elements in diesel water heaters are to be controlled by MainPower.

4. Mains

4.1 A certificate of compliance must be provided before any connection to the network can be completed.

4.2 If the load is above 60 Amp 1-phase or 32 Amp 3-phase, please consult MainPower’s Network Services team.

4.3 Additional requirements may apply to cover installations with large fixed-heating loads. Advice should be obtained from MainPower’s Network Services team before any wiring of mains is commenced on these particular installations.

4.4 Commercial Installations: The minimum size mains shall be: 3-phase 16 sq.mm plus 16 sq.mm Neutral in areas reticulated on 3-phase supply.

 

Please ensure you have read and understood the Network Connection Agreement and Network Connection Standards documents before completing your application.

MainPower looks forward to assessing your application and connecting you to our distribution system.

New power supplies and amend existing supply

New power supplies or amendments to existing supplies on the MainPower network incur application and design fees.

Once you have completed the following form, you will receive a letter within five working days detailing the applicable application and design fees. Fees must be paid before any work is commenced.

Click here to view application and design fees from 01 March 2024 here.

Need some more information before starting your request? Click here to read our frequently asked questions.

Builders temporary supply

Important information for building and electrical contractors

1. Application for Temporary Supply and New Connection

1.1 All applications for supply are to be made on the Network Connection Application online form on this page. Alternatively you can contact MainPower directly.

1.2 In normal circumstances, a new installation will not be connected to the supply until such time as MainPower has received notification from the Electrical Contractor.

2. Electrical Contractor’s Responsibility

2.1 It is the Electrical Contractor’s responsibility to ensure that proper provision is made for underground supply. On the MainPower network only MainPower approved contractors are permitted to access service boxes, link boxes or kiosks.

2.2 Where the Electrical Contractor has installed the service main to the power pole, they must contact MainPower to advise that the service cable is required to be raised and terminated. This is chargeable to the Electrical Contractor or customer. Only MainPower approved contractors are permitted to climb poles or access pole fuses.

Important notifications

Hot water load testing under way ahead of winter

Until mid‑April, we’re working closely with retailers to carry out hot water load testing as we prepare our network for the coming winter season.

These tests run for a couple of hours each day, Monday to Friday, with no testing taking place over weekends. Because each test window is relatively short, customers are unlikely to notice any changes to their hot water supply.

The purpose of this work is to help us better understand how much controllable load is available during the summer months. Gaining accurate insights now means we can model customer savings more effectively by reducing system load at peak times. It also helps us assess whether this load flexibility could assist Transpower in deferring an upcoming local transmission upgrade.

This testing is an important part of ensuring a resilient, efficient network that supports our community.

MainPower Trust elections

Voting is open for the 2026 MainPower Trust election.

Voting packs have been emailed or posted by Electionz.com to everyone who pays a power bill on the MainPower network. You need to have the unique ID provided to cast your vote.

If you haven’t received a voting pack, or can’t find it, you can get a replacement by contacting iro@electionz.com.  For full details of the candidates, visit mainpowertrust.co.nz/trustee-elections/

Make the most of this opportunity to have your say on the future of MainPower – and your community.

Voting closes midday Friday 6 March 2026. 

Privacy Policy

Is your outage not listed?

Troubleshoot your outage
Treat all lines as live during the outage period; power may be restored at any time. If you require further information, please call MainPower’s 24-hour faults line. To report an emergency, call 111.

Outage notifications

Hot water load testing under way ahead of winter

Until mid‑April, we’re working closely with retailers to carry out hot water load testing as we prepare our network for the coming winter season.

These tests run for a couple of hours each day, Monday to Friday, with no testing taking place over weekends. Because each test window is relatively short, customers are unlikely to notice any changes to their hot water supply.

The purpose of this work is to help us better understand how much controllable load is available during the summer months. Gaining accurate insights now means we can model customer savings more effectively by reducing system load at peak times. It also helps us assess whether this load flexibility could assist Transpower in deferring an upcoming local transmission upgrade.

This testing is an important part of ensuring a resilient, efficient network that supports our community.

MainPower Trust elections

Voting is open for the 2026 MainPower Trust election.

Voting packs have been emailed or posted by Electionz.com to everyone who pays a power bill on the MainPower network. You need to have the unique ID provided to cast your vote.

If you haven’t received a voting pack, or can’t find it, you can get a replacement by contacting iro@electionz.com.  For full details of the candidates, visit mainpowertrust.co.nz/trustee-elections/

Make the most of this opportunity to have your say on the future of MainPower – and your community.

Voting closes midday Friday 6 March 2026. 

Privacy Policy

Is your outage not listed?

Troubleshoot your outage
Treat all lines as live during the outage period; power may be restored at any time. If you require further information, please call MainPower’s 24-hour faults line. To report an emergency, call 111.

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