At a Glance
Paerau and Patearoa Power Stations use ‘run of river’ flows to generate electricity during the winter months. In summer, Paerau Station does not access water needed for irrigation and Patearoa Station normally shuts down.
Paerau takes water from the Taieri River at Paerau weir. The minimum river levels pass by, as do excess flood levels. The water that is taken runs to the Power Station along an aqueduct and a 1.3 kilometre (km) tunnel, where the twin turbines have an output capacity of 10 MW.
Paerau discharges water into the 35km irrigation scheme. This includes a ponding area, which Patearoa Station draws from. Patearoa has a twin turbine driving a single induction generator, producing 2.25 MW.
In summer, when it’s dry, we release water from the Loganburn Reservoir to ensure minimum flows in the Taieri River and through the irrigation scheme.
Resource Consents for the Paerau and Patearoa Schemes were approved in 1999, for a 35 year term, these are due for renewal in 2034.