Major projects

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Our major projects focus on ensuring a reliable, sustainable electricity network for our communities.

From infrastructure upgrades to innovative renewable energy solutions, we’re committed to future-proofing the network. Explore how these projects enhance resilience, efficiency, and support the growing demand for clean, reliable power in our region.

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…

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Thongcaster Road Solar Project

The MainPower Board approved construction and received the required consents for a 7.3MW solar farm on our 10-hectare site at…

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Cheviot to Oaro Sub-Transmission Line Upgrade – Complete

MainPower’s sub-transmission line between Oaro and Cheviot is constructed at 66 kV but is currently operating at 33 kV. This…

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Amberley Zone Substation

In early 2025 we began construction on a new substation at 41 Reserve Road, Balcairn. We’re proud to say that…

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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…

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Hanmer Springs Substation

As part of MainPower’s planning for future capacity, as well as the retirement of end-of-life assets, we are going to…

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