Unfortunately some parts of this website do not work properly on your browser version, please update your browser and try again.
If there's no power at your place, check out the current & planned outage map to see if you're affected by either a scheduled maintenance power outage or a fault. If your outage isn't listed or for more information, call us on 0800 30 90 80.
Planned Outages - COVID-19
At COVID-19 Alert Levels 2 and 1, all planned outages will proceed as scheduled.
Check out our planned outages map to see the current status of any upcoming planned power outages you may be affected by or call 0800 30 90 80 to get in touch.
We recognise outages may be difficult for some customers to manage, however, we must ensure we can maintain a safe, reliable, quality supply of electricity throughout the network.
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.