Contracting Capabilities

Northpower provides contracting services across the North Island including engineering, infrastructure management and maintenance and construction.

Connecting distributed generation

Looking to export energy back to the grid?

Installing distributed generation systems, like solar or wind, in homes and businesses is becoming increasingly popular. We can work with you or your customers to assist with systems to export power back to the grid.

There’s a detailed process for connecting any distributed generation system to our network because we have to consider things like electrical safety and compliance, our network capacity to handle excess electricity coming into it, along with any adverse effects from a new connection that could interrupt the electricity supply.

Congestion considerations

Currently, there are no specific locations on the Northpower network of which we’re aware of export congestion for small-scale generation connected to the low voltage network or where we expect export congestion for small-scale generation to occur within the next 12 months.

For large-scale generation (connected to our high voltage network) view the current, potential, and expected congestion maps.

It’s highly likely that export congestion will occur as more generation is connected to the network.

It’s vital that people considering installing new or additional small-scale generation follow the processes in clauses 4.3 and 6 of Northpower’s Technical Requirements for Small Scale Distributed Generation before committing to the purchase of new generation.

Connection of large-scale generation (1MW or above)

We always engineer connection of large-scale generation (1MW or above) on a case-by-case basis.

Here are the charges associated with assessing the initial application of large-scale generation systems:

  • 0 kW to 100kW: $100
  • 10kW to less than 100kW:  $500
  • 100 kW to less than 1 MW:  $1,000
  • 1 MW or over:  $5,000

Please note: all fees exclude GST

We’ll send an invoice with the relevant fee which needs to be paid in full before we process the application.

Application forms

If your proposed generation is less than 10kW please complete our online alternative energy/solar/wind connection application form here.

If your proposed generation is 10kW or larger, please complete our large scale distributed generation initial form and attach a copy to your online alternative energy/solar/wind connection application form.

Installation, inspection and livening

Once a small-scale distributed generation application is approved, the system owner will need to arrange installation, inspection and livening. Your installer and retailer will need a copy of our approval form.

Once the system is connected:

  • the installer/electrician needs to compete the CoC (certificate of certification)
  • the inspector needs to complete the RoI (record of inspection) and both will need to complete the livening form
  • the livening form and RoI must be returned to Northpower within five days of the system being connected to our network to comply with Part 6 of the electricity industry participation code

Unless a connection contract has been entered into, distributed generation is on the regulated terms in accordance with Schedule 6.2 of part 6 of the electricity industry participation code.

A copy of our congestion management policy can be found here.

This is currently being updated to reflect the management of large-scale distributed generation on the network.

We'll take it from here

After you’ve submitted your application we’ll check that our network has capacity and that there will be no adverse effects for our users. We’ll advise if any changes (including additional support) are needed and once this is done we’ll approve your application.

The approval notice will include any relevant technical conditions like maximum net power and power factor.

Contact us when you’re ready to begin installation, and when installation is complete and is ready to connect it needs to be inspected by a registered electrical inspector. They may need to run the generator for testing purposes.