The turbines are horizontal S-type tubular turbines with adjustable guide vanes and adjustable pitch (Kaplan type) runners. Speed increaser gearboxes connect the turbines and generators. The power station takes its water by three penstocks and directs it into each turbine intakes. Penstock intake gates, designed to be able to close into flow, are provided for isolation of penstocks. New intake holes cut through the dam wall are located at a level that will enable water releases from the existing regulating gates during future maintenance activities. The three new penstocks are above ground as they leave the dam wall and descend to the turbine intakes below ground level. The intakes are provided with a fully automated, trash rack cleaning machine. Discharge of trash material is via the spillway dissipater area.
Energy purchase and supply
The plant is expected to produce 37 gigawatt hours of electricity per annum, with the output contracted to Energy Australia under a long-term power purchase agreement. The generator is a non-market, non-scheduled generator and is also accredited under the Mandatory Renewable Energy Target scheme and the Green Power Scheme. The plant is connected to the 220 kilovolt (kV) transmission system at Dartmouth Power Station via a dedicated 22 kV line.