Working
for you

Powerco is here to bring power to your door.  You buy electricity from your retailer, and it’s our job to look after the lines, cables, poles and other electrical equipment that get it to you from the National Grid, safely, reliably and efficiently. 

We’re committed to keeping the power on for our customers.  To ensure our network remains resilient, we routinely undertake maintenance and upgrade projects.

We understand that some of our maintenance and upgrades can cause inconveniences to our customers, so we are working hard to keep you up to date with information on how each project is tracking, and how you may be affected.

To find out more about projects happening in your region, visit our project page.

Publications

2020 Documents

Annual Delivery Report – Here for you 2020
Download PDF

ADR quantitive data – The numbers 2020
Download PDF

2019 Documents

Annual Delivery Report – Delivering on our promise 2019
Download PDF

ADR quantitive data – The numbers 2019
Download PDF

GLOSSARY

General electrical terms

Cable Underground electricity conductors.

Circuit – Connects two substations. Is made up of lines, cables or a mix
of both.

Line – Overhead electricity conductors supported on poles.

National Grid – New Zealand’s high voltage transmission network. The
National Grid takes electricity from power generators to
distribution networks.

Powerco – We are a distribution network – we own and maintain circuits
that connect to the National Grid, and the lines and cables that
deliver electricity to houses and businesses.

Power Station – Generates electricity, such as hydro, thermal or wind
generation.

Substation – A site for equipment like transformers and switchrooms.

Transpower – The State-Owned Enterprise that owns and operates the
National Grid.

110kV circuit – High voltage transmission (a kilovolt is 1,000 Volts)
Line – Overhead electricity conductors supported on poles or towers.
Cable – Underground electricity conductors.
Circuit – Connects two substations – made of lines, cables, or a mix of both.
Substation – A site for equipment like transformers and switchrooms.
National Grid – Takes electricity from power generators (such as hydro) to distribution networks (such as Powerco).
Transformer – Converts high voltage power from the National Grid to lower voltages suitable for distribution to customers.