Ohau A Power Station

Ohau A is the first of the canal stations in the upper Waitaki.

Located on a canal linking Lake Pukaki and Lake Ruataniwha.
A second, smaller canal – known as Ohau canal – also feeds water from Lake Ohau into this main canal.
More than 2 million cubic metres of spoil had to removed from the site during construction of the powerhouse.
Required substantial concrete foundations to compensate for the lack of solid rock suitable for foundation building.
It was fully commissioned in 1980.
The Powerhouse, over 120 metres long, contains four main generators plus an auxiliary generator.
Water from Ohau A flows into Lake Ruataniwha.

Key statistics
– Nominal annual generation: 1150 GWh
– Installed capacity: 264 MW