Torrens Island is an island in the Australian state of South Australia located in the Port River Estuary between the Port River and Barker Inlet, about 15 kilometres (9.3 mi) northwest of the state capital of Adelaide. Since European settlement of Adelaide in 1836, it has been used for a number of purposes.
Being uninhabited, an island, adjacent to Port Adelaide, and near Outer Harbor, Torrens Island was initially used as the site of a Quarantine Station for new arrivals (by sea) to South Australia. One example of its use was during the so-called "Boonah crisis".
The Torrens Island Internment Camp was a World War I detention camp which held up to 400 men of German or Austro-Hungarian background between 9 October 1914 and 16 August 1915.
There are two power stations on Torrens Island:
- Torrens Island Power Station, completed in 1967, and since 2007 operated by AGL Energy; capacity of 1,280 MW.
- Quarantine Power Station, built and operated since 2002 by Origin Energy; original capacity 95 MW, expanded in 2009 to 216 MW.
Protected areas associated with Torrens Island or the waters immediately adjoining its shores include the Torrens Island Conservation Park, the Barker Inlet-St Kilda Aquatic Reserve, the St Kilda – Chapman Creek Aquatic Reserve and the Adelaide Dolphin Sanctuary. 
|Wikimedia Commons has media related to Torrens Island.|
- D. Walsh:Torrens Island Quarantine Station Weekendnotes, 4 July 2013. Accessed 17 July 2013.
- "Torrens Island Quarantine Station (including Jetties, Cemetery, Mortuary & Complex)". South Australian Heritage Register. Department of Environment, Water and Natural Resources. Retrieved 12 February 2016.
- AGL takes ownership of Torrens Island power station AGL press release to ASX, 3 July 2007. Accessed 17 July 2013.
- Origin Energy > Quarantine Power Station Accessed 17 July 2013.
- "Press release: GREATER PROTECTION FOR TORRENS ISLAND" (PDF). Government of South Australia. Retrieved 8 January 2014.
- Primary Industries and Regions South Australia (PIRSA) (2007), Aquatic Reserve: Barker Inlet (PDF), Primary Industries and Regions South Australia
- Primary Industries and Regions South Australia (PIRSA) (2007), Aquatic Reserve: St Kilda – Chapman Creek (PDF), Primary Industries and Regions South Australia
- "The Adelaide Dolphin Sanctuary". Natural Resources Management Adelaide and Mount Lofty Ranges. Retrieved 5 October 2014.
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