http://www.sundropfarms.com/wp-content/uploads/2017/06/GQJun17_Farm.pdfhttps://www.theguardian.com/sustainable-business/2017/apr/27/water-smart-farming...Another new player in Australia driving supply of water-smart food is Sundrop Farms. The Adelaide-based firm is the first company in Australia to develop a commercial-scale operation using hydroponic technology.
“Hydroponics is a thriving industry right across the globe, with produce being grown in a huge variety of environments” says Philipp Saumweber, a former investment banker who heads up the company. As if to prove the point, Sundrop has located its 65-hectare facility in an area of virtual desert near Port Augusta in South Australia. One of the criticisms of the technology is that it is energy-intensive, what with all those indoor lights and automated heating and cooling systems. Sundrop has successfully ducked that charge by installing a concentrated solar power plant with 23,000 flat mirrors to meet most of its energy needs.
Saumweber is quick to push the water-efficiency credentials of the indoor farm too. With precious little rain or subterranean water to draw on, Sundrop has opted to pump seawater from the ocean and desalinate it. Its renewably powered desalination plant generates around 1 million litres of fresh water every day. The company also uses the seawater as a natural disinfectant, reducing the need for pesticides. None of this comes cheap, mind. Sundrop’s Port Augusta farm cost a reported A$200m. Yet Saumweber insists this high upfront investment will be offset in the long run by lower operational costs, thanks to the use of cheaper renewable energy. What can’t be argued with is the net result: 15,000 tonnes of tomatoes a year from a patch of land that is barely habitable, let alone productive.
This has to be one of the best examles or how modern farming can be..... Using the sun to power it and using sea water to gow … all in Baren land..... (about 15% of australia's truss tomatoes)
This their Website
http://www.sundropfarms.com/So really anywhere that there is access to the ocean and lots of sunshine can be used to produce LOTS of food.It's worth reading about how little effort goes into weeding and pest control... no chemicals here

ABC report is a better run down
https://www.abc.net.au/news/2016-10-01/sundrop-farms-opens-solar-greenhouse-usin...