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Piriaka Power Station

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  • Piriaka Power Station
  • Kuratau Station
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  • Arnold Power Station
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  • Branch River Power Scheme
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  • Cobb Power Station
  • Coleridge Power Station
  • Dillmans Power Scheme
  • Esk Power Scheme
  • Highbank Power Scheme
  • Highbank Pumping Station
  • Hinemaiaia Power Scheme
  • Kaimai Power Scheme
  • Mangorei Power Station
  • Matahina Power Scheme
  • Kaniere Forks/McKays Creek Power Scheme
  • Motukawa Power Scheme
  • Paerau/Patearoa Power Stations
  • Patea Power Scheme
  • Wahapo Power Scheme
  • Waihopai Power Station
  • Waipori Power Scheme
  • Wheao and Flaxy Power Scheme
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Piriaka Hydroelectric Power Station is located on the Whanganui River, and is one of five stations operated by Trustpower while being owned by King Country Energy (KCE). The scheme was commissioned in 1924. The station has an average annual output of 7 GWh.

At a Glance

LOCATION: Whanganui River

Commissioned 1924

Max Capacity 1.5 MW

Annual output 7 GWh

The Piriaka substation contains the transformers and switchgear for the generating plant. It is also the interface point between the power station and the network company to allow KCE to export its power.

Environment and recreation

KCE maintain the fish access pools around the canal loop and monitor river flow constantly. This area is a fishing hot spot, and they do their bit to keep the fish population healthy.

Kayakers in the area make use of one of the power stations tailraces to enter the river. This tailrace is where the water is discharged from the powerhouse and returned to the river.

Piriaka Power Station Station
Piriaka Power Station Station


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