Many retailers are choosing not to display the MainPower rebate on their electricity bills to customers. Please be aware we are still paying your rebate to your retailer every month.
Please note, at COVID-19 Alert Level 2, all planned outages will proceed as scheduled. 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.
Please do not approach our teams while they are working as we have strict safety guidelines in place to maintain the health and wellbeing of our team and the community..
Please call 0800 30 90 80 to report a power outage.
For non-urgent matters, please use the contact us form.
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 fault line – 0800 30 90 80; to report an emergency call 111.
Network Harmonics are created by devices connected by the customer to the electricity network. These harmonics are typically referred to as grid pollution due to the effect they have on the power quality within the network.
This change in power quality can impact on the performance of sensitive devices such as computers, transformers and motors causing them to malfunction or fail.
The harmonics are created by non-linear loads. The most common piece of equipment responsible for the creation of harmonics is Variable Speed Drives (VSD’s). The harmonic currents created by these devices cause voltage distortion at various points in the network dependant on the system impedance.
These harmonics are produced by customer devices and therefore must be controlled at the site where they are produced. This is essential because controlling the individual sources will mitigate the flow of harmonics into the network. This will also mitigate the effects of the harmonics on the wider network.
Any customer with a cumulative VSD load exceeding 20kW must adhere to this standard.