| Cethana Dam | |
| Location Map: | Australia Tasmania |
| Location Map Size: | 280 |
| Location Map Caption: | Location of the Cethana Dam in Tasmania |
| Coordinates: | -41.4797°N 146.1336°W |
| Country: | Australia |
| Location: | North-western Tasmania |
| Purpose: | P |
| Status: | O |
| Owner: | Hydro Tasmania |
| Dam Type: | E |
| Dam Crosses: | Forth River |
| Spillway Count: | 1 |
| Spillway Type: | Uncontrolled |
| Res Name: | Lake Cethana |
| Plant Name: | Cethana Power Station |
| Plant Operator: | Hydro Tasmania |
| Plant Type: | C |
| Plant Turbines: | 1 x 100MW Fuji Francis turbine |
| Plant Capacity Factor: | 0.85 |
| Extra: | [1] |
The Cethana Power Station is a conventional hydroelectric power station located in north-western Tasmania, Australia.
Part of the MerseyForth scheme that comprises seven hydroelectric power stations, the Cethana Power Station is the fifth station in the scheme. The power station is located underground and is supplied with water from Lake Cethana, the Wilmot Power Station located below Lake Gairdner, and uncontrolled flow from the Forth River. Water from the station is returned to the Forth River through a tailrace tunnel which has a tailrace gate structure at the outlet portal.[2]
The power station was commissioned in 1971 by the Hydro Electric Corporation (TAS) and the station has one Fuji Francis turbine, with a generating capacity of of electricity. The station output, estimated to be annually,[1] is fed to the outdoor switchyard via a three single-phase 13.8 kV/220 kV Fuji generator transformer.[3]
Cethana Dam is listed as a National Engineering Landmark by Engineers Australia as part of its Engineering Heritage Recognition Program.[4]