Hornsdale Wind Farm
LocationSouth Australia
Coordinates33°03′29″S 138°32′38″E / 33.058°S 138.544°E / -33.058; 138.544Coordinates: 33°03′29″S 138°32′38″E / 33.058°S 138.544°E / -33.058; 138.544
Construction costA$89 million
Owner(s)Neoen Australia
Nuclear power station
Reactor supplier
Wind farm
Hub height92.5 metres (303 ft)[1]
Rotor diameter110 metres (360 ft)
Power generation
Units operational99
Nameplate capacity315 MW
External links
WebsiteOfficial website

The Hornsdale Wind Farm is an electricity generator in the locality of Hornsdale in the south-west of the Narien Range, north of Jamestown, South Australia. It consists of 99 wind turbines with a generation capacity of 315 megawatts (422,000 hp).[2] The plant is owned and operated by Neoen, a French renewable energy company.

The electricity generated by Hornsdale Wind Farm is contracted to be supplied to the Australian Capital Territory.[3]


The "Balance of Plant" civil engineering and site works for the wind farm was performed by Catcon for all three stages of construction.[4] The wind turbine generators were imported from Denmark, and the towers from Vietnam.[5] They were commissioned by Siemens Australia.[6] Before the whole wind farm was commissioned, Hornsdale was generating 86 MW immediately prior to the 2016 South Australian blackout in September 2016.[7]


The wind farm supplies 1 TWh/year to the 275 kV grid from 3.2 MW direct-drive turbines (no gearbox). The 100 MW Phase 2 tested supplying 6 out of 8 grid services between August 2017 and February 2018.[8][9][10]


Two of the towers feature paintings by people from the indigenous peoples of the region. Jessica Turner is a Nukunu woman whose artwork represents the story of the serpent's role in forming aspects of the landscape, particularly waterholes. Chris Angrave and Louise Brown are Ngadjuri people who depicted how the Mungiura were found in hilly country, peering over the top of windbreaks before a storm, and blowing hard, which caused a whirly wind.[11]

Hornsdale Power Reserve

Main article: Hornsdale Power Reserve

Diagram of power and duration of the two sections of battery
Diagram of power and duration of the two sections of battery

The Hornsdale Power Reserve is a grid-connected battery complex co-located with the Hornsdale Wind Farm. It was built by Tesla, Inc. for a cost to Tesla of about US$50 million.[12][13]

It is owned[14] and operated by Neoen, with the government having the right to call on the stored power under certain circumstances.[15] It provides a total of 129 megawatt-hours (460 GJ) of storage capable of discharge at 100 megawatts (130,000 hp) into the power grid. It provides several services to the grid:[16]

The battery construction was completed and testing began on 25 November 2017. It was connected to the grid on 1 December 2017.[22] This easily beat Elon Musk's wager of "100 days from contract signature",[13][23][24] which started when a grid connection agreement was signed with ElectraNet on 29 September 2017.[12] Tesla had already begun construction, and some units were already operational by the time the contract was signed.[18] Due to the project's success and the area's demand for stable electricity output, the project was expanded by 50% in November 2019. The upgraded system is capable of discharge at 150 megawatts (200,000 hp) into the power grid.[25]


  1. ^ "Hornsdale Wind Farm". Siemens Australia. Retrieved 12 July 2017.
  2. ^ "Generation information page". Australian Energy Market Operator. 2 November 2018. Retrieved 12 November 2018.
  3. ^ "Neoen – Hornsdale Wind Farm". Investment Attraction South Australia, Department of State Development, Government of South Australia. Retrieved 12 July 2017.
  4. ^ "Hornsdale Wind Farm". Catcon. Retrieved 12 July 2017.
  5. ^ "Hornsdale Wind Farm Construction Update Stage 3 Issue No 3". May 2017. Retrieved 12 July 2017.
  6. ^ "Hornsdale Wind Farm". Siemens Australia. Retrieved 12 July 2017.
  7. ^ Washington, David; Siebert, Bension (5 October 2016). "Blackout report leaves renewables debate dangling in the breeze". InDaily. Retrieved 5 October 2016.
  8. ^ Parkinson, Giles (13 March 2018). "Wind farm proves it can provide cheaper, more precise grid security than gas generators". RenewEconomy. Archived from the original on 20 January 2020.
  9. ^ Patel, Sonal (1 September 2018). "A Wind Experiment: The Hornsdale Wind Farm". POWER Magazine. Archived from the original on 11 October 2020.
  10. ^ "Neoen Hornsdale Wind Farm FCAS Trial Report - Australian Renewable Energy Agency (ARENA)". Australian Renewable Energy Agency.
  11. ^ "Hornsdale's arty installation". The Northern Argus. 8 February 2017. Retrieved 13 July 2017.
  12. ^ a b "Tesla completes its giant Australian Powerpack battery on time". Engadget. Retrieved 7 August 2018.
  13. ^ a b Elon Musk [@elonmusk] (9 March 2017). "Tesla will get the system installed and working 100 days from contract signature or it is free. That serious enough for you?" (Tweet) – via Twitter.
  14. ^ "Hornsdale power reserve: about us". Retrieved 12 April 2018. Neoen, the owner of the Hornsdale Power Reserve,...
  15. ^ Harmsen, Nick (24 November 2017). "Elon Musk's giant lithium ion battery completed by Tesla in SA's Mid North". ABC News.
  16. ^ "Initial operation of the Hornsdale Power Reserve Battery Energy Storage System" (PDF). Australian Energy Market Operator. 5 April 2018.
  17. ^ Parkinson, Giles (19 December 2017). "Tesla big battery outsmarts lumbering coal units after Loy Yang trips". RenewEconomy. Retrieved 19 December 2017. But in reality, the response from the Tesla big battery was even quicker than that – in milliseconds – but too fast for the AEMO data to record. Importantly, by the time that the contracted Gladstone coal unit had gotten out of bed and put its socks on so it can inject more into the grid – it is paid to respond in six seconds – the fall in frequency had already been arrested and was being reversed.
  18. ^ a b Harmsen, Nick (29 September 2017). "Elon Musk: Tesla reaches halfway point of construction on 'world's biggest' battery". ABC News. Australian Broadcasting Corporation. Retrieved 29 September 2017.
  19. ^ Parkinson, Giles (14 December 2017). "Tesla big battery goes the full discharge – 100MW – for first time". RenewEconomy. RenewEconomy. Retrieved 19 December 2017.
  20. ^ Lambert, Fred. "Tesla's giant battery in Australia reduced grid service cost by 90%". Electrek. 9to5 network. Retrieved 11 May 2018.
  21. ^ "Explainer: What the Tesla big battery can and cannot do". RenewEconomy. 10 July 2017. Retrieved 12 October 2017.
  22. ^ "Tesla's Giant Battery Farm Ready to Flick the Switch". The urban developer. 29 November 2017. Retrieved 30 November 2017.
  23. ^ Scopelianos, Sarah; Fedorowytsch, Tom; Garcia, Sara (7 July 2017). "Elon Musk's Tesla to build world's biggest lithium ion battery to secure power for South Australia". ABC News. Retrieved 12 July 2017.
  24. ^ Harmsen, Nick (7 July 2017). "What is Tesla's SA battery and how will it be used?". ABC News. Retrieved 9 October 2017.
  25. ^ "Tesla battery in Hornsdale, Australia to undergo a 50 MW expansion". Power Engineering International. 20 November 2019.