MainPower’s sub-transmission line between Oaro and Cheviot is constructed at 66 kV but 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 66 kV.
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?
Upgrading the sub-transmission line from 33 kV to a 66 kV will help 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.
