Powerco is investing $25 million to improve reliability and increase capacity of the power supply in the South Waikato.
We’re building a new connection to the national grid with a 110kV circuit (made up of overhead lines and underground cables) from the Arapuni Power Station to supply a new transformer at the existing Powerco Putaruru substation.
Currently this area is supplied by a single line between Transpower’s Karapiro and Hinuera substations. (Transpower owns and operates the national grid). When the line experiences a fault or is out for maintenance, power is lost to 11,500 customers across the Putaruru, Tirau and Matamata areas.
Work has commenced to upgrade the Putaruru substation and construction of the circuit is due to start in 2022 once detailed design is completed. A new transformer will be installed at the upgraded substation.
Once the new Powerco circuit and transformer are commissioned in 2023, this additional national grid connection will help ensure security of power supply for the area.