Hanmer Springs Sub-Transmission Line Upgrade – Completed

Earlier this year we upgraded the line that supplies electricity to Hanmer Springs from 33 kV to 66 kV.

While Hanmer Springs does not require additional capacity at this time, this upgrade will facilitate capacity increases in the future.

This project helps improve the resilience and reliability of the existing line with stronger conductors and structures. It also enables the decommissioning of end-of-life assets at Marble Point Zone Substation

We continue our commitment to minimising any inconvenience to the community. 
After consulting with the Community Board, we’ve decided to replace sections of the line over the next 3–5 years, spreading out the work to lessen disruption.

Other projects

Ashley River

Ashley to Coldstream 66kV Upgrade

The Eastern area of the Waimakariri District has experienced significant growth due to residential and commercial development in the Pegasus…

Outage notifications

Drone flight

Dates: Tuesday the 27 January 2026
Time: between 7:00am – 6:00pm (weather permitting)

MainPower will be conducting drone flights in Plasketts Road, Fernside. (Flight time is weather permitting).

This work helps us assess the condition of our lines, and identify any maintenance required. It will help us to plan our maintenance work and upgrades to the power service to increase the reliability and resilience of power for our customers.

Our customers privacy will be respected, and any ‘personal information’ collected in the footage will only be used for the purposes of asset condition assessment, line monitoring, and maintenance. Customers may ask the operator on site to show them the footage, and if there any concerns, customers can ask for footage to be deleted. Please refer to our Privacy Statement on our website.

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

Drone flight

Dates: Tuesday the 27 January 2026
Time: between 7:00am – 6:00pm (weather permitting)

MainPower will be conducting drone flights in Plasketts Road, Fernside. (Flight time is weather permitting).

This work helps us assess the condition of our lines, and identify any maintenance required. It will help us to plan our maintenance work and upgrades to the power service to increase the reliability and resilience of power for our customers.

Our customers privacy will be respected, and any ‘personal information’ collected in the footage will only be used for the purposes of asset condition assessment, line monitoring, and maintenance. Customers may ask the operator on site to show them the footage, and if there any concerns, customers can ask for footage to be deleted. Please refer to our Privacy Statement on our website.

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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