Ōhau C is a hydro station located in the Mackenzie Basin. It is a twin station to Ōhau B.
Both stations have four 53-megawatt generating units and a generation output of up to 212 megawatts.
Water from Lake Ruataniwha flows through Ōhau B, then goes into the Ōhau C canal, which takes it to the Ōhau C power station and out into Lake Benmore.
Ōhau C was the last hydro station to be built on the Waitaki Power Scheme, completing the scheme 56 years after construction began on the Waitaki dam and power station in 1928.
The Upper Waitaki Power Scheme comprises five hydro stations, along with two dams and six canals totalling 56 kilometres in length. About 50 million cubic metres of material was excavated for the canals and other earthworks.
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