Cheviot to Oaro Sub-Transmission Line Upgrade

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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.