Part of the
Derwent scheme that comprises eleven hydroelectric power stations, the Wayatinah Power Station is the sixth power station in the scheme and the second power station in the lower run-of-river system. The aboveground power station is located on the Derwent, below its junction with the Nive River. Water from the Derwent from
Liapootah Power Station and spill from Liapootah Dam flows into Wayatinah Lagoon. Water in the lagoon is diverted by a -long tunnel to two low pressure woodstave pipelines, each long. It then descends through three steel
penstocks to the Wayatinah Power Station. The tunnel intake structure is provided with two vertical lift, gravity close intake gates designed to cut off full flow. Each of the three steel penstocks is provided with a hilltop valve designed to close under full flow. The power station was commissioned in 1957 by the
Hydro Electric Corporation (TAS) and the station has three
English Electric Francis turbines, with a combined generating capacity of of electricity. Within the station building, each turbine has a fully embedded spiral casing and water flow is controlled by a spherical rotary main inlet valve and a turbine relief valve designed to prevent spiral casing overpressure. The station output, estimated to be annually, == See also ==