Powerco is investing over $33 million to improve reliability and increase capacity of power supply for the South Waikato towns of Putaruru and Tirau, and the Hinuera area. We’re building a new connection to the national grid with a 110kV circuit from Transpower’s Arapuni substation to supply a new transformer at the existing Powerco Putaruru substation.
The area is currently supplied by a single line between Transpower’s Karapiro and Hinuera substations. When the line experiences an outage or is out of service for maintenance there is complete loss of power to about 11,500 addresses. Once the new Powerco circuit and transformer are commissioned, this additional national grid connection will help ensure security of power supply for the region.
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The Putaruru, Tirau and Matamata areas are supplied by a single Transpower line. When the line experiences a fault or is out for maintenance, there is loss of power to 11,500 customers in the area.
Build a new circuit from Transpower’s Arapuni substation to the Powerco Putaruru substation, and upgrade the substation with a new building, transformer and new equipment.
Once commissioned, if the existing Transpower line fails, supply will continue through the new Powerco circuit.
An additional national grid connection helping ensure the security of power supply for the area.
Commission new circuit
Begin construction of circuit
Finalise the detailed design for the circuit
Confirm route for the circuit
Construct new substation buildings
Find out the latest updates about this project
We are still in the planning phase, so we can’t be
definitive. At this stage, we know we will need traffic
management while we install overhead poles and line
along the road reserve.
lines, but at this stage we believe the poles will be
18-20 metres high with spans of approximately 50-200
metres between each pole.
We are using a mix of underground cable and
overhead lines due to considerations including cost
Detailed designs will be ready mid-2021.
At this stage we plan to start construction by the end
of 2021 and be complete by mid-2023.
We can never guarantee 100% supply, however
this circuit will help ensure security of supply for the
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