Lemonthyme Power Station

Parangana Dam
Location of the Parangana Dam in Tasmania
Country Australia
Location North-western Tasmania
Coordinates 41°37′48″S 146°13′12″E / 41.63000°S 146.22000°E / -41.63000; 146.22000Coordinates: 41°37′48″S 146°13′12″E / 41.63000°S 146.22000°E / -41.63000; 146.22000
Purpose Power
Status Operational
Opening date 1968 (1968)
Owner(s) Hydro Tasmania
Dam and spillways
Type of dam Embankment dam
Impounds Mersey River
Height 53 metres (174 ft)
Length 189 metres (620 ft)
Dam volume 382 thousand cubic metres (13.5×10^6 cu ft)
Spillways 1
Spillway type Uncontrolled
Spillway capacity 2,093 cubic metres per second (73,900 cu ft/s)
Reservoir
Creates Lake Parangana
Total capacity 14,820 megalitres (523×10^6 cu ft)
Catchment area 715 square kilometres (276 sq mi)
Surface area 11.4 hectares (28 acres)
Power station
Name Lemonthyme Power Station
Coordinates 41°36′14″S 146°08′19″E / 41.60389°S 146.13861°E / -41.60389; 146.13861 (Lemonthyme Power Station)
Operator(s) Hydro Tasmania
Commission date 1969 (1969)
Type Conventional
Hydraulic head 139 metres (456 ft)
Turbines 1 x 54 MW (72,000 hp)
Fuji Francis turbine
Installed capacity 54 megawatts (72,000 hp)
Capacity factor 0.85
Annual generation 313 gigawatt-hours (1,130 TJ)
Website
hydro.com.au/energy/our-power-stations/mersey-forth
[1]

The Lemonthyme Power Station is a conventional hydroelectric power station located in north-western Tasmania, Australia.

Technical details

Part of the Mersey–Forth scheme that comprises eight hydroelectric power stations, the Lemonthyme Power Station is the third station in the scheme. The power station is located below the rock-filled Parangana Dam which forms Lake Parangana by damming the Mersey River. Water from the lake is transferred west to the power station by a 6.5-kilometre (4.0 mi)-long tunnel and a 1.6-kilometre (0.99 mi)-long surface single penstock.[2] A mini hydro station is provided at Lake Parangana to release water into the lower reaches of the Mersey River. The water runs into Lake Cethana.

The power station was commissioned in 1969 by the Hydro Electric Corporation (TAS) and the station has one Fuji Francis turbine, with a generating capacity of 54 megawatts (72,000 hp) of electricity. The station output, estimated to be 313 gigawatt-hours (1,130 TJ) annually,[1] is fed to TasNetworks' transmission grid via two 3-phase 11 kV/110 kV Siemens generator transformer to the outdoor switchyard.[3]

See also

References

  1. 1 2 "Register of Large Dams in Australia" (Excel (requires download)). Dams information. Australian National Committee on Large Dams. 2010. Retrieved 23 June 2015.
  2. ↑ "Mersey - Forth". Energy. Hydro Tasmania. Retrieved 3 July 2015.
  3. ↑ "Lemonthyme Power Station: Technical fact sheet" (PDF). Mersey-Forth Catchment. Hydro Tasmania. Retrieved 3 July 2015.


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