Lemonthyme Power Station

{{Use Australian English|date=July 2015}} {{Use dmy dates|date=May 2026}} {{Infobox dam | name = Parangana Dam | name_official = | image = | image_size = 280 | image_caption = | image_alt = | location_map = Australia Tasmania | location_map_size = 280 | location_map_caption = Location of the Parangana Dam in [[Tasmania]] | location_map_alt = | coordinates = {{coord|41|37|48|S|146|13|12|E|region:AU-TAS_type:landmark|display=inline,title}} | country = Australia | location = North-western [[Tasmania]] | purpose = P | status = O | construction_began = | opening = {{start date|1968}} | demolished = | cost = | owner = [[Hydro Tasmania]] | operator = | dam_type = E | dam_crosses = [[Mersey River (Tasmania)|Mersey River]] | dam_height = {{convert|53|m}} | dam_height_foundation= | dam_height_thalweg = | dam_length = {{convert|189|m}} | dam_elevation_crest = | dam_width_crest = | dam_width_base = | dam_volume = {{convert|382|e3m3}} | spillway_count = 1 | spillway_type = [[Spillway#Types|Uncontrolled]] | spillway_capacity = {{convert|2093|m3/s}} | res_name = Lake Parangana | res_capacity_total = {{convert|14820|ML}} | res_capacity_active = | res_capacity_inactive= | res_catchment = {{convert|715|km2}} | res_surface = {{convert|11.4|ha}} | res_max_length = | res_max_width = | res_max_depth = | res_elevation = | res_tidal_range = | plant_name = Lemonthyme Power Station | plant_coordinates = {{coord|41|36|14|S|146|08|19|E|type:landmark}} | plant_operator = [[Hydro Tasmania]] | plant_commission = {{start date|1969}} | plant_decommission = | plant_type = R | plant_hydraulic_head = {{convert|139|m}} | plant_turbines = 1 x {{convert|54|MW|abbr=on}}<br />[[Fuji Heavy Industries|Fuji]] [[Francis turbine|Francis]] [[water turbine|turbine]] | plant_capacity = {{convert|54|MW}} | plant_annual_gen = {{convert|313|GWh}} | website = {{URL|hydro.com.au/energy/our-power-stations/mersey-forth}} | extra = <ref name=ancold>{{cite web|url=http://www.ancold.org.au/wp-content/uploads/2012/10/Dams-Australia-2010-v1-for-website.xls|format=Excel (requires download)|title=Register of Large Dams in Australia|publisher=[[Australian National Committee on Large Dams]]|year=2010|accessdate=23 June 2015|work=Dams information|archive-date=12 December 2013|archive-url=https://web.archive.org/web/20131212120804/http://www.ancold.org.au/wp-content/uploads/2012/10/Dams-Australia-2010-v1-for-website.xls|url-status=dead}}</ref> }}

The '''Lemonthyme Power Station''' is a [[Run-of-the-river hydroelectricity|run-of-the-river]] [[hydroelectric]] [[power station]] located in north-western [[Tasmania]], Australia. It is the fourth station in the [[Mersey River (Tasmania)|Mersey]]{{endash}}[[Forth River (Tasmania)|Forth]] run-of-river scheme that comprises seven hydroelectric power stations and one [[mini-hydro]] station.

==Technical details== The Parangana Dam forms Lake Parangana by damming the [[Mersey River (Tasmania)|Mersey River]]. Water from the lake is diverted west to Lemonthyme Power Station via a {{convert|6.5|km|adj=on}}-long tunnel, followed by a {{convert|1.6|km|adj=on}} single surface [[penstock]].<ref>{{cite web |url=https://www.hydro.com.au/energy/our-power-stations/mersey-forth |title=Mersey - Forth |work=Energy |publisher=[[Hydro Tasmania]] |date= |accessdate=3 July 2015}}</ref> The water then runs through the power station, and is discharged into the River Forth, then down to Lake Cethana.

The power station was commissioned in 1969 by the [[Hydro Tasmania|Hydro Electric Corporation (TAS)]]. It has one [[Fuji Heavy Industries|Fuji]] [[Francis turbine|Francis]] [[Water turbine|turbine]], with a generating capacity of {{convert|54|MW}} of electricity. The station output, estimated to be {{convert|313|GWh}} annually,{{Citation needed|reason=cited technical sheet in wayback machine does not give an output figure|date=September 2018}} is fed to [[TasNetworks]]' transmission grid via two 3-phase 11 k[[voltage|V]]/220 kV [[Siemens]] generator transformers to the outdoor switchyard.<ref>{{cite web|url=https://www.hydro.com.au/docs/default-source/clean-energy/our-power-stations/power-station-fact-sheets/lemonthyme-power-station-fact-sheet.pdf?sfvrsn=9dcc9b28_2|archive-url=https://web.archive.org/web/20230617200338/https://www.hydro.com.au/docs/default-source/clean-energy/our-power-stations/power-station-fact-sheets/lemonthyme-power-station-fact-sheet.pdf?sfvrsn=9dcc9b28_2|url-status=live|archive-date=17 June 2023|title=Lemonthyme Power Station: Technical fact sheet|work=Mersey-Forth Catchment|publisher=[[Hydro Tasmania]]|accessdate=18 June 2023}}</ref>

Although much of the water from Lake Parangana travels the approximately 8 km to the Lemonthyme Power Station (which discharges into the River Forth), some water is allowed to continue down the Mersey River for environmental reasons, after running through the [[Parangana Power Station|Parangana mini hydro station]].

==See also== {{stack|{{Portal|Australia|Renewable energy|Water}}}} * [[List of power stations in Tasmania]] * [[List of run-of-the-river hydroelectric power stations]]

==References== {{reflist}}

[[Category:Energy infrastructure completed in 1969]] [[Category:Hydroelectric power stations in Tasmania]] [[Category:Mersey River (Tasmania)]] [[Category:North West Tasmania]] [[Category:Run-of-the-river power stations]]