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Cheviot to Oaro Sub-Transmission Line Upgrade

MainPower’s sub-transmission line between Oaro and Cheviot is constructed at 66 kV however is currently operating at 33 kV. This major project will shift the 66 / 33 kV transformer from Cheviot to Oaro, allowing the line to operate at 66kV.

Land has been purchased for the relocation of the Oaro Zone Substation to a new site where the new 66 / 33 kV transformer will be located.

Why are we undertaking this work and what does this mean for our customers?

By upgrading the sub-transmission line from a 33 kV to a 66 kV, this is going to assist with the current population growth of the area and support capacity growth stability within the surrounding areas. As the number of customers on our network grows, the network must grow with it. By proactively increasing the Sub-Transmission line capacity we are prepared for future demand growth and increased Network resilience.

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Outage notifications

Kaiapoi planned work

Kaiapoi residents may notice an increase in planned power outages over the coming months, as MainPower work to upgrade electricity assets in the area. We apologies for any inconvenience this may cause.

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 fault line to report an emergency call 111.

Outage notifications

Kaiapoi planned work

Kaiapoi residents may notice an increase in planned power outages over the coming months, as MainPower work to upgrade electricity assets in the area. We apologies for any inconvenience this may cause.

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 fault line to report an emergency call 111.

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